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mirror_zfs/cmd/zfs/zfs_main.c
наб a3dcc0aa0c zfs, zpool: safe_malloc() duplicate argv 
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: John Kennedy <john.kennedy@delphix.com>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #13259
2022-04-01 17:55:24 -07:00

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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2011, 2020 by Delphix. All rights reserved.
* Copyright 2012 Milan Jurik. All rights reserved.
* Copyright (c) 2012, Joyent, Inc. All rights reserved.
* Copyright (c) 2013 Steven Hartland. All rights reserved.
* Copyright 2016 Igor Kozhukhov <ikozhukhov@gmail.com>.
* Copyright 2016 Nexenta Systems, Inc.
* Copyright (c) 2019 Datto Inc.
* Copyright (c) 2019, loli10K <ezomori.nozomu@gmail.com>
* Copyright 2019 Joyent, Inc.
* Copyright (c) 2019, 2020 by Christian Schwarz. All rights reserved.
*/
#include <assert.h>
#include <ctype.h>
#include <sys/debug.h>
#include <errno.h>
#include <getopt.h>
#include <libgen.h>
#include <libintl.h>
#include <libuutil.h>
#include <libnvpair.h>
#include <locale.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <zone.h>
#include <grp.h>
#include <pwd.h>
#include <umem.h>
#include <pthread.h>
#include <signal.h>
#include <sys/list.h>
#include <sys/mkdev.h>
#include <sys/mntent.h>
#include <sys/mnttab.h>
#include <sys/mount.h>
#include <sys/stat.h>
#include <sys/fs/zfs.h>
#include <sys/systeminfo.h>
#include <sys/types.h>
#include <time.h>
#include <sys/zfs_project.h>
#include <libzfs.h>
#include <libzfs_core.h>
#include <zfs_prop.h>
#include <zfs_deleg.h>
#include <libzutil.h>
#ifdef HAVE_IDMAP
#include <aclutils.h>
#include <directory.h>
#endif /* HAVE_IDMAP */
#include "zfs_iter.h"
#include "zfs_util.h"
#include "zfs_comutil.h"
#include "zfs_projectutil.h"
libzfs_handle_t *g_zfs;
static char history_str[HIS_MAX_RECORD_LEN];
static boolean_t log_history = B_TRUE;
static int zfs_do_clone(int argc, char **argv);
static int zfs_do_create(int argc, char **argv);
static int zfs_do_destroy(int argc, char **argv);
static int zfs_do_get(int argc, char **argv);
static int zfs_do_inherit(int argc, char **argv);
static int zfs_do_list(int argc, char **argv);
static int zfs_do_mount(int argc, char **argv);
static int zfs_do_rename(int argc, char **argv);
static int zfs_do_rollback(int argc, char **argv);
static int zfs_do_set(int argc, char **argv);
static int zfs_do_upgrade(int argc, char **argv);
static int zfs_do_snapshot(int argc, char **argv);
static int zfs_do_unmount(int argc, char **argv);
static int zfs_do_share(int argc, char **argv);
static int zfs_do_unshare(int argc, char **argv);
static int zfs_do_send(int argc, char **argv);
static int zfs_do_receive(int argc, char **argv);
static int zfs_do_promote(int argc, char **argv);
static int zfs_do_userspace(int argc, char **argv);
static int zfs_do_allow(int argc, char **argv);
static int zfs_do_unallow(int argc, char **argv);
static int zfs_do_hold(int argc, char **argv);
static int zfs_do_holds(int argc, char **argv);
static int zfs_do_release(int argc, char **argv);
static int zfs_do_diff(int argc, char **argv);
static int zfs_do_bookmark(int argc, char **argv);
static int zfs_do_channel_program(int argc, char **argv);
static int zfs_do_load_key(int argc, char **argv);
static int zfs_do_unload_key(int argc, char **argv);
static int zfs_do_change_key(int argc, char **argv);
static int zfs_do_project(int argc, char **argv);
static int zfs_do_version(int argc, char **argv);
static int zfs_do_redact(int argc, char **argv);
static int zfs_do_wait(int argc, char **argv);
#ifdef __FreeBSD__
static int zfs_do_jail(int argc, char **argv);
static int zfs_do_unjail(int argc, char **argv);
#endif
/*
* Enable a reasonable set of defaults for libumem debugging on DEBUG builds.
*/
#ifdef DEBUG
const char *
_umem_debug_init(void)
{
return ("default,verbose"); /* $UMEM_DEBUG setting */
}
const char *
_umem_logging_init(void)
{
return ("fail,contents"); /* $UMEM_LOGGING setting */
}
#endif
typedef enum {
HELP_CLONE,
HELP_CREATE,
HELP_DESTROY,
HELP_GET,
HELP_INHERIT,
HELP_UPGRADE,
HELP_LIST,
HELP_MOUNT,
HELP_PROMOTE,
HELP_RECEIVE,
HELP_RENAME,
HELP_ROLLBACK,
HELP_SEND,
HELP_SET,
HELP_SHARE,
HELP_SNAPSHOT,
HELP_UNMOUNT,
HELP_UNSHARE,
HELP_ALLOW,
HELP_UNALLOW,
HELP_USERSPACE,
HELP_GROUPSPACE,
HELP_PROJECTSPACE,
HELP_PROJECT,
HELP_HOLD,
HELP_HOLDS,
HELP_RELEASE,
HELP_DIFF,
HELP_BOOKMARK,
HELP_CHANNEL_PROGRAM,
HELP_LOAD_KEY,
HELP_UNLOAD_KEY,
HELP_CHANGE_KEY,
HELP_VERSION,
HELP_REDACT,
HELP_JAIL,
HELP_UNJAIL,
HELP_WAIT,
} zfs_help_t;
typedef struct zfs_command {
const char *name;
int (*func)(int argc, char **argv);
zfs_help_t usage;
} zfs_command_t;
/*
* Master command table. Each ZFS command has a name, associated function, and
* usage message. The usage messages need to be internationalized, so we have
* to have a function to return the usage message based on a command index.
*
* These commands are organized according to how they are displayed in the usage
* message. An empty command (one with a NULL name) indicates an empty line in
* the generic usage message.
*/
static zfs_command_t command_table[] = {
{ "version", zfs_do_version, HELP_VERSION },
{ NULL },
{ "create", zfs_do_create, HELP_CREATE },
{ "destroy", zfs_do_destroy, HELP_DESTROY },
{ NULL },
{ "snapshot", zfs_do_snapshot, HELP_SNAPSHOT },
{ "rollback", zfs_do_rollback, HELP_ROLLBACK },
{ "clone", zfs_do_clone, HELP_CLONE },
{ "promote", zfs_do_promote, HELP_PROMOTE },
{ "rename", zfs_do_rename, HELP_RENAME },
{ "bookmark", zfs_do_bookmark, HELP_BOOKMARK },
{ "program", zfs_do_channel_program, HELP_CHANNEL_PROGRAM },
{ NULL },
{ "list", zfs_do_list, HELP_LIST },
{ NULL },
{ "set", zfs_do_set, HELP_SET },
{ "get", zfs_do_get, HELP_GET },
{ "inherit", zfs_do_inherit, HELP_INHERIT },
{ "upgrade", zfs_do_upgrade, HELP_UPGRADE },
{ NULL },
{ "userspace", zfs_do_userspace, HELP_USERSPACE },
{ "groupspace", zfs_do_userspace, HELP_GROUPSPACE },
{ "projectspace", zfs_do_userspace, HELP_PROJECTSPACE },
{ NULL },
{ "project", zfs_do_project, HELP_PROJECT },
{ NULL },
{ "mount", zfs_do_mount, HELP_MOUNT },
{ "unmount", zfs_do_unmount, HELP_UNMOUNT },
{ "share", zfs_do_share, HELP_SHARE },
{ "unshare", zfs_do_unshare, HELP_UNSHARE },
{ NULL },
{ "send", zfs_do_send, HELP_SEND },
{ "receive", zfs_do_receive, HELP_RECEIVE },
{ NULL },
{ "allow", zfs_do_allow, HELP_ALLOW },
{ NULL },
{ "unallow", zfs_do_unallow, HELP_UNALLOW },
{ NULL },
{ "hold", zfs_do_hold, HELP_HOLD },
{ "holds", zfs_do_holds, HELP_HOLDS },
{ "release", zfs_do_release, HELP_RELEASE },
{ "diff", zfs_do_diff, HELP_DIFF },
{ "load-key", zfs_do_load_key, HELP_LOAD_KEY },
{ "unload-key", zfs_do_unload_key, HELP_UNLOAD_KEY },
{ "change-key", zfs_do_change_key, HELP_CHANGE_KEY },
{ "redact", zfs_do_redact, HELP_REDACT },
{ "wait", zfs_do_wait, HELP_WAIT },
#ifdef __FreeBSD__
{ "jail", zfs_do_jail, HELP_JAIL },
{ "unjail", zfs_do_unjail, HELP_UNJAIL },
#endif
};
#define NCOMMAND (sizeof (command_table) / sizeof (command_table[0]))
zfs_command_t *current_command;
static const char *
get_usage(zfs_help_t idx)
{
switch (idx) {
case HELP_CLONE:
return (gettext("\tclone [-p] [-o property=value] ... "
"<snapshot> <filesystem|volume>\n"));
case HELP_CREATE:
return (gettext("\tcreate [-Pnpuv] [-o property=value] ... "
"<filesystem>\n"
"\tcreate [-Pnpsv] [-b blocksize] [-o property=value] ... "
"-V <size> <volume>\n"));
case HELP_DESTROY:
return (gettext("\tdestroy [-fnpRrv] <filesystem|volume>\n"
"\tdestroy [-dnpRrv] "
"<filesystem|volume>@<snap>[%<snap>][,...]\n"
"\tdestroy <filesystem|volume>#<bookmark>\n"));
case HELP_GET:
return (gettext("\tget [-rHp] [-d max] "
"[-o \"all\" | field[,...]]\n"
"\t [-t type[,...]] [-s source[,...]]\n"
"\t <\"all\" | property[,...]> "
"[filesystem|volume|snapshot|bookmark] ...\n"));
case HELP_INHERIT:
return (gettext("\tinherit [-rS] <property> "
"<filesystem|volume|snapshot> ...\n"));
case HELP_UPGRADE:
return (gettext("\tupgrade [-v]\n"
"\tupgrade [-r] [-V version] <-a | filesystem ...>\n"));
case HELP_LIST:
return (gettext("\tlist [-Hp] [-r|-d max] [-o property[,...]] "
"[-s property]...\n\t [-S property]... [-t type[,...]] "
"[filesystem|volume|snapshot] ...\n"));
case HELP_MOUNT:
return (gettext("\tmount\n"
"\tmount [-flvO] [-o opts] <-a | filesystem>\n"));
case HELP_PROMOTE:
return (gettext("\tpromote <clone-filesystem>\n"));
case HELP_RECEIVE:
return (gettext("\treceive [-vMnsFhu] "
"[-o <property>=<value>] ... [-x <property>] ...\n"
"\t <filesystem|volume|snapshot>\n"
"\treceive [-vMnsFhu] [-o <property>=<value>] ... "
"[-x <property>] ... \n"
"\t [-d | -e] <filesystem>\n"
"\treceive -A <filesystem|volume>\n"));
case HELP_RENAME:
return (gettext("\trename [-f] <filesystem|volume|snapshot> "
"<filesystem|volume|snapshot>\n"
"\trename -p [-f] <filesystem|volume> <filesystem|volume>\n"
"\trename -u [-f] <filesystem> <filesystem>\n"
"\trename -r <snapshot> <snapshot>\n"));
case HELP_ROLLBACK:
return (gettext("\trollback [-rRf] <snapshot>\n"));
case HELP_SEND:
return (gettext("\tsend [-DnPpRvLecwhb] "
"[-X dataset[,dataset]...] "
"[-[i|I] snapshot] <snapshot>\n"
"\tsend [-DnvPLecw] [-i snapshot|bookmark] "
"<filesystem|volume|snapshot>\n"
"\tsend [-DnPpvLec] [-i bookmark|snapshot] "
"--redact <bookmark> <snapshot>\n"
"\tsend [-nvPe] -t <receive_resume_token>\n"
"\tsend [-Pnv] --saved filesystem\n"));
case HELP_SET:
return (gettext("\tset <property=value> ... "
"<filesystem|volume|snapshot> ...\n"));
case HELP_SHARE:
return (gettext("\tshare [-l] <-a [nfs|smb] | filesystem>\n"));
case HELP_SNAPSHOT:
return (gettext("\tsnapshot [-r] [-o property=value] ... "
"<filesystem|volume>@<snap> ...\n"));
case HELP_UNMOUNT:
return (gettext("\tunmount [-fu] "
"<-a | filesystem|mountpoint>\n"));
case HELP_UNSHARE:
return (gettext("\tunshare "
"<-a [nfs|smb] | filesystem|mountpoint>\n"));
case HELP_ALLOW:
return (gettext("\tallow <filesystem|volume>\n"
"\tallow [-ldug] "
"<\"everyone\"|user|group>[,...] <perm|@setname>[,...]\n"
"\t <filesystem|volume>\n"
"\tallow [-ld] -e <perm|@setname>[,...] "
"<filesystem|volume>\n"
"\tallow -c <perm|@setname>[,...] <filesystem|volume>\n"
"\tallow -s @setname <perm|@setname>[,...] "
"<filesystem|volume>\n"));
case HELP_UNALLOW:
return (gettext("\tunallow [-rldug] "
"<\"everyone\"|user|group>[,...]\n"
"\t [<perm|@setname>[,...]] <filesystem|volume>\n"
"\tunallow [-rld] -e [<perm|@setname>[,...]] "
"<filesystem|volume>\n"
"\tunallow [-r] -c [<perm|@setname>[,...]] "
"<filesystem|volume>\n"
"\tunallow [-r] -s @setname [<perm|@setname>[,...]] "
"<filesystem|volume>\n"));
case HELP_USERSPACE:
return (gettext("\tuserspace [-Hinp] [-o field[,...]] "
"[-s field] ...\n"
"\t [-S field] ... [-t type[,...]] "
"<filesystem|snapshot|path>\n"));
case HELP_GROUPSPACE:
return (gettext("\tgroupspace [-Hinp] [-o field[,...]] "
"[-s field] ...\n"
"\t [-S field] ... [-t type[,...]] "
"<filesystem|snapshot|path>\n"));
case HELP_PROJECTSPACE:
return (gettext("\tprojectspace [-Hp] [-o field[,...]] "
"[-s field] ... \n"
"\t [-S field] ... <filesystem|snapshot|path>\n"));
case HELP_PROJECT:
return (gettext("\tproject [-d|-r] <directory|file ...>\n"
"\tproject -c [-0] [-d|-r] [-p id] <directory|file ...>\n"
"\tproject -C [-k] [-r] <directory ...>\n"
"\tproject [-p id] [-r] [-s] <directory ...>\n"));
case HELP_HOLD:
return (gettext("\thold [-r] <tag> <snapshot> ...\n"));
case HELP_HOLDS:
return (gettext("\tholds [-rH] <snapshot> ...\n"));
case HELP_RELEASE:
return (gettext("\trelease [-r] <tag> <snapshot> ...\n"));
case HELP_DIFF:
return (gettext("\tdiff [-FHt] <snapshot> "
"[snapshot|filesystem]\n"));
case HELP_BOOKMARK:
return (gettext("\tbookmark <snapshot|bookmark> "
"<newbookmark>\n"));
case HELP_CHANNEL_PROGRAM:
return (gettext("\tprogram [-jn] [-t <instruction limit>] "
"[-m <memory limit (b)>]\n"
"\t <pool> <program file> [lua args...]\n"));
case HELP_LOAD_KEY:
return (gettext("\tload-key [-rn] [-L <keylocation>] "
"<-a | filesystem|volume>\n"));
case HELP_UNLOAD_KEY:
return (gettext("\tunload-key [-r] "
"<-a | filesystem|volume>\n"));
case HELP_CHANGE_KEY:
return (gettext("\tchange-key [-l] [-o keyformat=<value>]\n"
"\t [-o keylocation=<value>] [-o pbkdf2iters=<value>]\n"
"\t <filesystem|volume>\n"
"\tchange-key -i [-l] <filesystem|volume>\n"));
case HELP_VERSION:
return (gettext("\tversion\n"));
case HELP_REDACT:
return (gettext("\tredact <snapshot> <bookmark> "
"<redaction_snapshot> ...\n"));
case HELP_JAIL:
return (gettext("\tjail <jailid|jailname> <filesystem>\n"));
case HELP_UNJAIL:
return (gettext("\tunjail <jailid|jailname> <filesystem>\n"));
case HELP_WAIT:
return (gettext("\twait [-t <activity>] <filesystem>\n"));
default:
__builtin_unreachable();
}
}
void
nomem(void)
{
(void) fprintf(stderr, gettext("internal error: out of memory\n"));
exit(1);
}
/*
* Utility function to guarantee malloc() success.
*/
void *
safe_malloc(size_t size)
{
void *data;
if ((data = calloc(1, size)) == NULL)
nomem();
return (data);
}
static void *
safe_realloc(void *data, size_t size)
{
void *newp;
if ((newp = realloc(data, size)) == NULL) {
free(data);
nomem();
}
return (newp);
}
static char *
safe_strdup(char *str)
{
char *dupstr = strdup(str);
if (dupstr == NULL)
nomem();
return (dupstr);
}
/*
* Callback routine that will print out information for each of
* the properties.
*/
static int
usage_prop_cb(int prop, void *cb)
{
FILE *fp = cb;
(void) fprintf(fp, "\t%-15s ", zfs_prop_to_name(prop));
if (zfs_prop_readonly(prop))
(void) fprintf(fp, " NO ");
else
(void) fprintf(fp, "YES ");
if (zfs_prop_inheritable(prop))
(void) fprintf(fp, " YES ");
else
(void) fprintf(fp, " NO ");
(void) fprintf(fp, "%s\n", zfs_prop_values(prop) ?: "-");
return (ZPROP_CONT);
}
/*
* Display usage message. If we're inside a command, display only the usage for
* that command. Otherwise, iterate over the entire command table and display
* a complete usage message.
*/
static __attribute__((noreturn)) void
usage(boolean_t requested)
{
int i;
boolean_t show_properties = B_FALSE;
FILE *fp = requested ? stdout : stderr;
if (current_command == NULL) {
(void) fprintf(fp, gettext("usage: zfs command args ...\n"));
(void) fprintf(fp,
gettext("where 'command' is one of the following:\n\n"));
for (i = 0; i < NCOMMAND; i++) {
if (command_table[i].name == NULL)
(void) fprintf(fp, "\n");
else
(void) fprintf(fp, "%s",
get_usage(command_table[i].usage));
}
(void) fprintf(fp, gettext("\nEach dataset is of the form: "
"pool/[dataset/]*dataset[@name]\n"));
} else {
(void) fprintf(fp, gettext("usage:\n"));
(void) fprintf(fp, "%s", get_usage(current_command->usage));
}
if (current_command != NULL &&
(strcmp(current_command->name, "set") == 0 ||
strcmp(current_command->name, "get") == 0 ||
strcmp(current_command->name, "inherit") == 0 ||
strcmp(current_command->name, "list") == 0))
show_properties = B_TRUE;
if (show_properties) {
(void) fprintf(fp,
gettext("\nThe following properties are supported:\n"));
(void) fprintf(fp, "\n\t%-14s %s %s %s\n\n",
"PROPERTY", "EDIT", "INHERIT", "VALUES");
/* Iterate over all properties */
(void) zprop_iter(usage_prop_cb, fp, B_FALSE, B_TRUE,
ZFS_TYPE_DATASET);
(void) fprintf(fp, "\t%-15s ", "userused@...");
(void) fprintf(fp, " NO NO <size>\n");
(void) fprintf(fp, "\t%-15s ", "groupused@...");
(void) fprintf(fp, " NO NO <size>\n");
(void) fprintf(fp, "\t%-15s ", "projectused@...");
(void) fprintf(fp, " NO NO <size>\n");
(void) fprintf(fp, "\t%-15s ", "userobjused@...");
(void) fprintf(fp, " NO NO <size>\n");
(void) fprintf(fp, "\t%-15s ", "groupobjused@...");
(void) fprintf(fp, " NO NO <size>\n");
(void) fprintf(fp, "\t%-15s ", "projectobjused@...");
(void) fprintf(fp, " NO NO <size>\n");
(void) fprintf(fp, "\t%-15s ", "userquota@...");
(void) fprintf(fp, "YES NO <size> | none\n");
(void) fprintf(fp, "\t%-15s ", "groupquota@...");
(void) fprintf(fp, "YES NO <size> | none\n");
(void) fprintf(fp, "\t%-15s ", "projectquota@...");
(void) fprintf(fp, "YES NO <size> | none\n");
(void) fprintf(fp, "\t%-15s ", "userobjquota@...");
(void) fprintf(fp, "YES NO <size> | none\n");
(void) fprintf(fp, "\t%-15s ", "groupobjquota@...");
(void) fprintf(fp, "YES NO <size> | none\n");
(void) fprintf(fp, "\t%-15s ", "projectobjquota@...");
(void) fprintf(fp, "YES NO <size> | none\n");
(void) fprintf(fp, "\t%-15s ", "written@<snap>");
(void) fprintf(fp, " NO NO <size>\n");
(void) fprintf(fp, "\t%-15s ", "written#<bookmark>");
(void) fprintf(fp, " NO NO <size>\n");
(void) fprintf(fp, gettext("\nSizes are specified in bytes "
"with standard units such as K, M, G, etc.\n"));
(void) fprintf(fp, "%s", gettext("\nUser-defined properties "
"can be specified by using a name containing a colon "
"(:).\n"));
(void) fprintf(fp, gettext("\nThe {user|group|project}"
"[obj]{used|quota}@ properties must be appended with\n"
"a user|group|project specifier of one of these forms:\n"
" POSIX name (eg: \"matt\")\n"
" POSIX id (eg: \"126829\")\n"
" SMB name@domain (eg: \"matt@sun\")\n"
" SMB SID (eg: \"S-1-234-567-89\")\n"));
} else {
(void) fprintf(fp,
gettext("\nFor the property list, run: %s\n"),
"zfs set|get");
(void) fprintf(fp,
gettext("\nFor the delegated permission list, run: %s\n"),
"zfs allow|unallow");
}
/*
* See comments at end of main().
*/
if (getenv("ZFS_ABORT") != NULL) {
(void) printf("dumping core by request\n");
abort();
}
exit(requested ? 0 : 2);
}
/*
* Take a property=value argument string and add it to the given nvlist.
* Modifies the argument inplace.
*/
static boolean_t
parseprop(nvlist_t *props, char *propname)
{
char *propval;
if ((propval = strchr(propname, '=')) == NULL) {
(void) fprintf(stderr, gettext("missing "
"'=' for property=value argument\n"));
return (B_FALSE);
}
*propval = '\0';
propval++;
if (nvlist_exists(props, propname)) {
(void) fprintf(stderr, gettext("property '%s' "
"specified multiple times\n"), propname);
return (B_FALSE);
}
if (nvlist_add_string(props, propname, propval) != 0)
nomem();
return (B_TRUE);
}
/*
* Take a property name argument and add it to the given nvlist.
* Modifies the argument inplace.
*/
static boolean_t
parsepropname(nvlist_t *props, char *propname)
{
if (strchr(propname, '=') != NULL) {
(void) fprintf(stderr, gettext("invalid character "
"'=' in property argument\n"));
return (B_FALSE);
}
if (nvlist_exists(props, propname)) {
(void) fprintf(stderr, gettext("property '%s' "
"specified multiple times\n"), propname);
return (B_FALSE);
}
if (nvlist_add_boolean(props, propname) != 0)
nomem();
return (B_TRUE);
}
static int
parse_depth(char *opt, int *flags)
{
char *tmp;
int depth;
depth = (int)strtol(opt, &tmp, 0);
if (*tmp) {
(void) fprintf(stderr,
gettext("%s is not an integer\n"), optarg);
usage(B_FALSE);
}
if (depth < 0) {
(void) fprintf(stderr,
gettext("Depth can not be negative.\n"));
usage(B_FALSE);
}
*flags |= (ZFS_ITER_DEPTH_LIMIT|ZFS_ITER_RECURSE);
return (depth);
}
#define PROGRESS_DELAY 2 /* seconds */
static char *pt_reverse = "\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b";
static time_t pt_begin;
static char *pt_header = NULL;
static boolean_t pt_shown;
static void
start_progress_timer(void)
{
pt_begin = time(NULL) + PROGRESS_DELAY;
pt_shown = B_FALSE;
}
static void
set_progress_header(char *header)
{
assert(pt_header == NULL);
pt_header = safe_strdup(header);
if (pt_shown) {
(void) printf("%s: ", header);
(void) fflush(stdout);
}
}
static void
update_progress(char *update)
{
if (!pt_shown && time(NULL) > pt_begin) {
int len = strlen(update);
(void) printf("%s: %s%*.*s", pt_header, update, len, len,
pt_reverse);
(void) fflush(stdout);
pt_shown = B_TRUE;
} else if (pt_shown) {
int len = strlen(update);
(void) printf("%s%*.*s", update, len, len, pt_reverse);
(void) fflush(stdout);
}
}
static void
finish_progress(char *done)
{
if (pt_shown) {
(void) printf("%s\n", done);
(void) fflush(stdout);
}
free(pt_header);
pt_header = NULL;
}
static int
zfs_mount_and_share(libzfs_handle_t *hdl, const char *dataset, zfs_type_t type)
{
zfs_handle_t *zhp = NULL;
int ret = 0;
zhp = zfs_open(hdl, dataset, type);
if (zhp == NULL)
return (1);
/*
* Volumes may neither be mounted or shared. Potentially in the
* future filesystems detected on these volumes could be mounted.
*/
if (zfs_get_type(zhp) == ZFS_TYPE_VOLUME) {
zfs_close(zhp);
return (0);
}
/*
* Mount and/or share the new filesystem as appropriate. We provide a
* verbose error message to let the user know that their filesystem was
* in fact created, even if we failed to mount or share it.
*
* If the user doesn't want the dataset automatically mounted, then
* skip the mount/share step
*/
if (zfs_prop_valid_for_type(ZFS_PROP_CANMOUNT, type, B_FALSE) &&
zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) == ZFS_CANMOUNT_ON) {
if (zfs_mount_delegation_check()) {
(void) fprintf(stderr, gettext("filesystem "
"successfully created, but it may only be "
"mounted by root\n"));
ret = 1;
} else if (zfs_mount(zhp, NULL, 0) != 0) {
(void) fprintf(stderr, gettext("filesystem "
"successfully created, but not mounted\n"));
ret = 1;
} else if (zfs_share(zhp) != 0) {
(void) fprintf(stderr, gettext("filesystem "
"successfully created, but not shared\n"));
ret = 1;
}
zfs_commit_all_shares();
}
zfs_close(zhp);
return (ret);
}
/*
* zfs clone [-p] [-o prop=value] ... <snap> <fs | vol>
*
* Given an existing dataset, create a writable copy whose initial contents
* are the same as the source. The newly created dataset maintains a
* dependency on the original; the original cannot be destroyed so long as
* the clone exists.
*
* The '-p' flag creates all the non-existing ancestors of the target first.
*/
static int
zfs_do_clone(int argc, char **argv)
{
zfs_handle_t *zhp = NULL;
boolean_t parents = B_FALSE;
nvlist_t *props;
int ret = 0;
int c;
if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
nomem();
/* check options */
while ((c = getopt(argc, argv, "o:p")) != -1) {
switch (c) {
case 'o':
if (!parseprop(props, optarg)) {
nvlist_free(props);
return (1);
}
break;
case 'p':
parents = B_TRUE;
break;
case '?':
(void) fprintf(stderr, gettext("invalid option '%c'\n"),
optopt);
goto usage;
}
}
argc -= optind;
argv += optind;
/* check number of arguments */
if (argc < 1) {
(void) fprintf(stderr, gettext("missing source dataset "
"argument\n"));
goto usage;
}
if (argc < 2) {
(void) fprintf(stderr, gettext("missing target dataset "
"argument\n"));
goto usage;
}
if (argc > 2) {
(void) fprintf(stderr, gettext("too many arguments\n"));
goto usage;
}
/* open the source dataset */
if ((zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL) {
nvlist_free(props);
return (1);
}
if (parents && zfs_name_valid(argv[1], ZFS_TYPE_FILESYSTEM |
ZFS_TYPE_VOLUME)) {
/*
* Now create the ancestors of the target dataset. If the
* target already exists and '-p' option was used we should not
* complain.
*/
if (zfs_dataset_exists(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM |
ZFS_TYPE_VOLUME)) {
zfs_close(zhp);
nvlist_free(props);
return (0);
}
if (zfs_create_ancestors(g_zfs, argv[1]) != 0) {
zfs_close(zhp);
nvlist_free(props);
return (1);
}
}
/* pass to libzfs */
ret = zfs_clone(zhp, argv[1], props);
/* create the mountpoint if necessary */
if (ret == 0) {
if (log_history) {
(void) zpool_log_history(g_zfs, history_str);
log_history = B_FALSE;
}
ret = zfs_mount_and_share(g_zfs, argv[1], ZFS_TYPE_DATASET);
}
zfs_close(zhp);
nvlist_free(props);
return (!!ret);
usage:
ASSERT3P(zhp, ==, NULL);
nvlist_free(props);
usage(B_FALSE);
return (-1);
}
/*
* Return a default volblocksize for the pool which always uses more than
* half of the data sectors. This primarily applies to dRAID which always
* writes full stripe widths.
*/
static uint64_t
default_volblocksize(zpool_handle_t *zhp, nvlist_t *props)
{
uint64_t volblocksize, asize = SPA_MINBLOCKSIZE;
nvlist_t *tree, **vdevs;
uint_t nvdevs;
nvlist_t *config = zpool_get_config(zhp, NULL);
if (nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, &tree) != 0 ||
nvlist_lookup_nvlist_array(tree, ZPOOL_CONFIG_CHILDREN,
&vdevs, &nvdevs) != 0) {
return (ZVOL_DEFAULT_BLOCKSIZE);
}
for (int i = 0; i < nvdevs; i++) {
nvlist_t *nv = vdevs[i];
uint64_t ashift, ndata, nparity;
if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_ASHIFT, &ashift) != 0)
continue;
if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_DRAID_NDATA,
&ndata) == 0) {
/* dRAID minimum allocation width */
asize = MAX(asize, ndata * (1ULL << ashift));
} else if (nvlist_lookup_uint64(nv, ZPOOL_CONFIG_NPARITY,
&nparity) == 0) {
/* raidz minimum allocation width */
if (nparity == 1)
asize = MAX(asize, 2 * (1ULL << ashift));
else
asize = MAX(asize, 4 * (1ULL << ashift));
} else {
/* mirror or (non-redundant) leaf vdev */
asize = MAX(asize, 1ULL << ashift);
}
}
/*
* Calculate the target volblocksize such that more than half
* of the asize is used. The following table is for 4k sectors.
*
* n asize blksz used | n asize blksz used
* -------------------------+---------------------------------
* 1 4,096 8,192 100% | 9 36,864 32,768 88%
* 2 8,192 8,192 100% | 10 40,960 32,768 80%
* 3 12,288 8,192 66% | 11 45,056 32,768 72%
* 4 16,384 16,384 100% | 12 49,152 32,768 66%
* 5 20,480 16,384 80% | 13 53,248 32,768 61%
* 6 24,576 16,384 66% | 14 57,344 32,768 57%
* 7 28,672 16,384 57% | 15 61,440 32,768 53%
* 8 32,768 32,768 100% | 16 65,536 65,636 100%
*
* This is primarily a concern for dRAID which always allocates
* a full stripe width. For dRAID the default stripe width is
* n=8 in which case the volblocksize is set to 32k. Ignoring
* compression there are no unused sectors. This same reasoning
* applies to raidz[2,3] so target 4 sectors to minimize waste.
*/
uint64_t tgt_volblocksize = ZVOL_DEFAULT_BLOCKSIZE;
while (tgt_volblocksize * 2 <= asize)
tgt_volblocksize *= 2;
const char *prop = zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE);
if (nvlist_lookup_uint64(props, prop, &volblocksize) == 0) {
/* Issue a warning when a non-optimal size is requested. */
if (volblocksize < ZVOL_DEFAULT_BLOCKSIZE) {
(void) fprintf(stderr, gettext("Warning: "
"volblocksize (%llu) is less than the default "
"minimum block size (%llu).\nTo reduce wasted "
"space a volblocksize of %llu is recommended.\n"),
(u_longlong_t)volblocksize,
(u_longlong_t)ZVOL_DEFAULT_BLOCKSIZE,
(u_longlong_t)tgt_volblocksize);
} else if (volblocksize < tgt_volblocksize) {
(void) fprintf(stderr, gettext("Warning: "
"volblocksize (%llu) is much less than the "
"minimum allocation\nunit (%llu), which wastes "
"at least %llu%% of space. To reduce wasted "
"space,\nuse a larger volblocksize (%llu is "
"recommended), fewer dRAID data disks\n"
"per group, or smaller sector size (ashift).\n"),
(u_longlong_t)volblocksize, (u_longlong_t)asize,
(u_longlong_t)((100 * (asize - volblocksize)) /
asize), (u_longlong_t)tgt_volblocksize);
}
} else {
volblocksize = tgt_volblocksize;
fnvlist_add_uint64(props, prop, volblocksize);
}
return (volblocksize);
}
/*
* zfs create [-Pnpv] [-o prop=value] ... fs
* zfs create [-Pnpsv] [-b blocksize] [-o prop=value] ... -V vol size
*
* Create a new dataset. This command can be used to create filesystems
* and volumes. Snapshot creation is handled by 'zfs snapshot'.
* For volumes, the user must specify a size to be used.
*
* The '-s' flag applies only to volumes, and indicates that we should not try
* to set the reservation for this volume. By default we set a reservation
* equal to the size for any volume. For pools with SPA_VERSION >=
* SPA_VERSION_REFRESERVATION, we set a refreservation instead.
*
* The '-p' flag creates all the non-existing ancestors of the target first.
*
* The '-n' flag is no-op (dry run) mode. This will perform a user-space sanity
* check of arguments and properties, but does not check for permissions,
* available space, etc.
*
* The '-u' flag prevents the newly created file system from being mounted.
*
* The '-v' flag is for verbose output.
*
* The '-P' flag is used for parseable output. It implies '-v'.
*/
static int
zfs_do_create(int argc, char **argv)
{
zfs_type_t type = ZFS_TYPE_FILESYSTEM;
zpool_handle_t *zpool_handle = NULL;
nvlist_t *real_props = NULL;
uint64_t volsize = 0;
int c;
boolean_t noreserve = B_FALSE;
boolean_t bflag = B_FALSE;
boolean_t parents = B_FALSE;
boolean_t dryrun = B_FALSE;
boolean_t nomount = B_FALSE;
boolean_t verbose = B_FALSE;
boolean_t parseable = B_FALSE;
int ret = 1;
nvlist_t *props;
uint64_t intval;
char *strval;
if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
nomem();
/* check options */
while ((c = getopt(argc, argv, ":PV:b:nso:puv")) != -1) {
switch (c) {
case 'V':
type = ZFS_TYPE_VOLUME;
if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
(void) fprintf(stderr, gettext("bad volume "
"size '%s': %s\n"), optarg,
libzfs_error_description(g_zfs));
goto error;
}
if (nvlist_add_uint64(props,
zfs_prop_to_name(ZFS_PROP_VOLSIZE), intval) != 0)
nomem();
volsize = intval;
break;
case 'P':
verbose = B_TRUE;
parseable = B_TRUE;
break;
case 'p':
parents = B_TRUE;
break;
case 'b':
bflag = B_TRUE;
if (zfs_nicestrtonum(g_zfs, optarg, &intval) != 0) {
(void) fprintf(stderr, gettext("bad volume "
"block size '%s': %s\n"), optarg,
libzfs_error_description(g_zfs));
goto error;
}
if (nvlist_add_uint64(props,
zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
intval) != 0)
nomem();
break;
case 'n':
dryrun = B_TRUE;
break;
case 'o':
if (!parseprop(props, optarg))
goto error;
break;
case 's':
noreserve = B_TRUE;
break;
case 'u':
nomount = B_TRUE;
break;
case 'v':
verbose = B_TRUE;
break;
case ':':
(void) fprintf(stderr, gettext("missing size "
"argument\n"));
goto badusage;
case '?':
(void) fprintf(stderr, gettext("invalid option '%c'\n"),
optopt);
goto badusage;
}
}
if ((bflag || noreserve) && type != ZFS_TYPE_VOLUME) {
(void) fprintf(stderr, gettext("'-s' and '-b' can only be "
"used when creating a volume\n"));
goto badusage;
}
if (nomount && type != ZFS_TYPE_FILESYSTEM) {
(void) fprintf(stderr, gettext("'-u' can only be "
"used when creating a filesystem\n"));
goto badusage;
}
argc -= optind;
argv += optind;
/* check number of arguments */
if (argc == 0) {
(void) fprintf(stderr, gettext("missing %s argument\n"),
zfs_type_to_name(type));
goto badusage;
}
if (argc > 1) {
(void) fprintf(stderr, gettext("too many arguments\n"));
goto badusage;
}
if (dryrun || type == ZFS_TYPE_VOLUME) {
char msg[ZFS_MAX_DATASET_NAME_LEN * 2];
char *p;
if ((p = strchr(argv[0], '/')) != NULL)
*p = '\0';
zpool_handle = zpool_open(g_zfs, argv[0]);
if (p != NULL)
*p = '/';
if (zpool_handle == NULL)
goto error;
(void) snprintf(msg, sizeof (msg),
dryrun ? gettext("cannot verify '%s'") :
gettext("cannot create '%s'"), argv[0]);
if (props && (real_props = zfs_valid_proplist(g_zfs, type,
props, 0, NULL, zpool_handle, B_TRUE, msg)) == NULL) {
zpool_close(zpool_handle);
goto error;
}
}
if (type == ZFS_TYPE_VOLUME) {
const char *prop = zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE);
uint64_t volblocksize = default_volblocksize(zpool_handle,
real_props);
if (volblocksize != ZVOL_DEFAULT_BLOCKSIZE &&
nvlist_lookup_string(props, prop, &strval) != 0) {
if (asprintf(&strval, "%llu",
(u_longlong_t)volblocksize) == -1)
nomem();
nvlist_add_string(props, prop, strval);
free(strval);
}
/*
* If volsize is not a multiple of volblocksize, round it
* up to the nearest multiple of the volblocksize.
*/
if (volsize % volblocksize) {
volsize = P2ROUNDUP_TYPED(volsize, volblocksize,
uint64_t);
if (nvlist_add_uint64(props,
zfs_prop_to_name(ZFS_PROP_VOLSIZE), volsize) != 0) {
nvlist_free(props);
nomem();
}
}
}
if (type == ZFS_TYPE_VOLUME && !noreserve) {
uint64_t spa_version;
zfs_prop_t resv_prop;
spa_version = zpool_get_prop_int(zpool_handle,
ZPOOL_PROP_VERSION, NULL);
if (spa_version >= SPA_VERSION_REFRESERVATION)
resv_prop = ZFS_PROP_REFRESERVATION;
else
resv_prop = ZFS_PROP_RESERVATION;
volsize = zvol_volsize_to_reservation(zpool_handle, volsize,
real_props);
if (nvlist_lookup_string(props, zfs_prop_to_name(resv_prop),
&strval) != 0) {
if (nvlist_add_uint64(props,
zfs_prop_to_name(resv_prop), volsize) != 0) {
nvlist_free(props);
nomem();
}
}
}
if (zpool_handle != NULL) {
zpool_close(zpool_handle);
nvlist_free(real_props);
}
if (parents && zfs_name_valid(argv[0], type)) {
/*
* Now create the ancestors of target dataset. If the target
* already exists and '-p' option was used we should not
* complain.
*/
if (zfs_dataset_exists(g_zfs, argv[0], type)) {
ret = 0;
goto error;
}
if (verbose) {
(void) printf(parseable ? "create_ancestors\t%s\n" :
dryrun ? "would create ancestors of %s\n" :
"create ancestors of %s\n", argv[0]);
}
if (!dryrun) {
if (zfs_create_ancestors(g_zfs, argv[0]) != 0) {
goto error;
}
}
}
if (verbose) {
nvpair_t *nvp = NULL;
(void) printf(parseable ? "create\t%s\n" :
dryrun ? "would create %s\n" : "create %s\n", argv[0]);
while ((nvp = nvlist_next_nvpair(props, nvp)) != NULL) {
uint64_t uval;
char *sval;
switch (nvpair_type(nvp)) {
case DATA_TYPE_UINT64:
VERIFY0(nvpair_value_uint64(nvp, &uval));
(void) printf(parseable ?
"property\t%s\t%llu\n" : "\t%s=%llu\n",
nvpair_name(nvp), (u_longlong_t)uval);
break;
case DATA_TYPE_STRING:
VERIFY0(nvpair_value_string(nvp, &sval));
(void) printf(parseable ?
"property\t%s\t%s\n" : "\t%s=%s\n",
nvpair_name(nvp), sval);
break;
default:
(void) fprintf(stderr, "property '%s' "
"has illegal type %d\n",
nvpair_name(nvp), nvpair_type(nvp));
abort();
}
}
}
if (dryrun) {
ret = 0;
goto error;
}
/* pass to libzfs */
if (zfs_create(g_zfs, argv[0], type, props) != 0)
goto error;
if (log_history) {
(void) zpool_log_history(g_zfs, history_str);
log_history = B_FALSE;
}
if (nomount) {
ret = 0;
goto error;
}
ret = zfs_mount_and_share(g_zfs, argv[0], ZFS_TYPE_DATASET);
error:
nvlist_free(props);
return (ret);
badusage:
nvlist_free(props);
usage(B_FALSE);
return (2);
}
/*
* zfs destroy [-rRf] <fs, vol>
* zfs destroy [-rRd] <snap>
*
* -r Recursively destroy all children
* -R Recursively destroy all dependents, including clones
* -f Force unmounting of any dependents
* -d If we can't destroy now, mark for deferred destruction
*
* Destroys the given dataset. By default, it will unmount any filesystems,
* and refuse to destroy a dataset that has any dependents. A dependent can
* either be a child, or a clone of a child.
*/
typedef struct destroy_cbdata {
boolean_t cb_first;
boolean_t cb_force;
boolean_t cb_recurse;
boolean_t cb_error;
boolean_t cb_doclones;
zfs_handle_t *cb_target;
boolean_t cb_defer_destroy;
boolean_t cb_verbose;
boolean_t cb_parsable;
boolean_t cb_dryrun;
nvlist_t *cb_nvl;
nvlist_t *cb_batchedsnaps;
/* first snap in contiguous run */
char *cb_firstsnap;
/* previous snap in contiguous run */
char *cb_prevsnap;
int64_t cb_snapused;
char *cb_snapspec;
char *cb_bookmark;
uint64_t cb_snap_count;
} destroy_cbdata_t;
/*
* Check for any dependents based on the '-r' or '-R' flags.
*/
static int
destroy_check_dependent(zfs_handle_t *zhp, void *data)
{
destroy_cbdata_t *cbp = data;
const char *tname = zfs_get_name(cbp->cb_target);
const char *name = zfs_get_name(zhp);
if (strncmp(tname, name, strlen(tname)) == 0 &&
(name[strlen(tname)] == '/' || name[strlen(tname)] == '@')) {
/*
* This is a direct descendant, not a clone somewhere else in
* the hierarchy.
*/
if (cbp->cb_recurse)
goto out;
if (cbp->cb_first) {
(void) fprintf(stderr, gettext("cannot destroy '%s': "
"%s has children\n"),
zfs_get_name(cbp->cb_target),
zfs_type_to_name(zfs_get_type(cbp->cb_target)));
(void) fprintf(stderr, gettext("use '-r' to destroy "
"the following datasets:\n"));
cbp->cb_first = B_FALSE;
cbp->cb_error = B_TRUE;
}
(void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
} else {
/*
* This is a clone. We only want to report this if the '-r'
* wasn't specified, or the target is a snapshot.
*/
if (!cbp->cb_recurse &&
zfs_get_type(cbp->cb_target) != ZFS_TYPE_SNAPSHOT)
goto out;
if (cbp->cb_first) {
(void) fprintf(stderr, gettext("cannot destroy '%s': "
"%s has dependent clones\n"),
zfs_get_name(cbp->cb_target),
zfs_type_to_name(zfs_get_type(cbp->cb_target)));
(void) fprintf(stderr, gettext("use '-R' to destroy "
"the following datasets:\n"));
cbp->cb_first = B_FALSE;
cbp->cb_error = B_TRUE;
cbp->cb_dryrun = B_TRUE;
}
(void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
}
out:
zfs_close(zhp);
return (0);
}
static int
destroy_batched(destroy_cbdata_t *cb)
{
int error = zfs_destroy_snaps_nvl(g_zfs,
cb->cb_batchedsnaps, B_FALSE);
fnvlist_free(cb->cb_batchedsnaps);
cb->cb_batchedsnaps = fnvlist_alloc();
return (error);
}
static int
destroy_callback(zfs_handle_t *zhp, void *data)
{
destroy_cbdata_t *cb = data;
const char *name = zfs_get_name(zhp);
int error;
if (cb->cb_verbose) {
if (cb->cb_parsable) {
(void) printf("destroy\t%s\n", name);
} else if (cb->cb_dryrun) {
(void) printf(gettext("would destroy %s\n"),
name);
} else {
(void) printf(gettext("will destroy %s\n"),
name);
}
}
/*
* Ignore pools (which we've already flagged as an error before getting
* here).
*/
if (strchr(zfs_get_name(zhp), '/') == NULL &&
zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
zfs_close(zhp);
return (0);
}
if (cb->cb_dryrun) {
zfs_close(zhp);
return (0);
}
/*
* We batch up all contiguous snapshots (even of different
* filesystems) and destroy them with one ioctl. We can't
* simply do all snap deletions and then all fs deletions,
* because we must delete a clone before its origin.
*/
if (zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT) {
cb->cb_snap_count++;
fnvlist_add_boolean(cb->cb_batchedsnaps, name);
if (cb->cb_snap_count % 10 == 0 && cb->cb_defer_destroy)
error = destroy_batched(cb);
} else {
error = destroy_batched(cb);
if (error != 0 ||
zfs_unmount(zhp, NULL, cb->cb_force ? MS_FORCE : 0) != 0 ||
zfs_destroy(zhp, cb->cb_defer_destroy) != 0) {
zfs_close(zhp);
/*
* When performing a recursive destroy we ignore errors
* so that the recursive destroy could continue
* destroying past problem datasets
*/
if (cb->cb_recurse) {
cb->cb_error = B_TRUE;
return (0);
}
return (-1);
}
}
zfs_close(zhp);
return (0);
}
static int
destroy_print_cb(zfs_handle_t *zhp, void *arg)
{
destroy_cbdata_t *cb = arg;
const char *name = zfs_get_name(zhp);
int err = 0;
if (nvlist_exists(cb->cb_nvl, name)) {
if (cb->cb_firstsnap == NULL)
cb->cb_firstsnap = strdup(name);
if (cb->cb_prevsnap != NULL)
free(cb->cb_prevsnap);
/* this snap continues the current range */
cb->cb_prevsnap = strdup(name);
if (cb->cb_firstsnap == NULL || cb->cb_prevsnap == NULL)
nomem();
if (cb->cb_verbose) {
if (cb->cb_parsable) {
(void) printf("destroy\t%s\n", name);
} else if (cb->cb_dryrun) {
(void) printf(gettext("would destroy %s\n"),
name);
} else {
(void) printf(gettext("will destroy %s\n"),
name);
}
}
} else if (cb->cb_firstsnap != NULL) {
/* end of this range */
uint64_t used = 0;
err = lzc_snaprange_space(cb->cb_firstsnap,
cb->cb_prevsnap, &used);
cb->cb_snapused += used;
free(cb->cb_firstsnap);
cb->cb_firstsnap = NULL;
free(cb->cb_prevsnap);
cb->cb_prevsnap = NULL;
}
zfs_close(zhp);
return (err);
}
static int
destroy_print_snapshots(zfs_handle_t *fs_zhp, destroy_cbdata_t *cb)
{
int err;
assert(cb->cb_firstsnap == NULL);
assert(cb->cb_prevsnap == NULL);
err = zfs_iter_snapshots_sorted(fs_zhp, destroy_print_cb, cb, 0, 0);
if (cb->cb_firstsnap != NULL) {
uint64_t used = 0;
if (err == 0) {
err = lzc_snaprange_space(cb->cb_firstsnap,
cb->cb_prevsnap, &used);
}
cb->cb_snapused += used;
free(cb->cb_firstsnap);
cb->cb_firstsnap = NULL;
free(cb->cb_prevsnap);
cb->cb_prevsnap = NULL;
}
return (err);
}
static int
snapshot_to_nvl_cb(zfs_handle_t *zhp, void *arg)
{
destroy_cbdata_t *cb = arg;
int err = 0;
/* Check for clones. */
if (!cb->cb_doclones && !cb->cb_defer_destroy) {
cb->cb_target = zhp;
cb->cb_first = B_TRUE;
err = zfs_iter_dependents(zhp, B_TRUE,
destroy_check_dependent, cb);
}
if (err == 0) {
if (nvlist_add_boolean(cb->cb_nvl, zfs_get_name(zhp)))
nomem();
}
zfs_close(zhp);
return (err);
}
static int
gather_snapshots(zfs_handle_t *zhp, void *arg)
{
destroy_cbdata_t *cb = arg;
int err = 0;
err = zfs_iter_snapspec(zhp, cb->cb_snapspec, snapshot_to_nvl_cb, cb);
if (err == ENOENT)
err = 0;
if (err != 0)
goto out;
if (cb->cb_verbose) {
err = destroy_print_snapshots(zhp, cb);
if (err != 0)
goto out;
}
if (cb->cb_recurse)
err = zfs_iter_filesystems(zhp, gather_snapshots, cb);
out:
zfs_close(zhp);
return (err);
}
static int
destroy_clones(destroy_cbdata_t *cb)
{
nvpair_t *pair;
for (pair = nvlist_next_nvpair(cb->cb_nvl, NULL);
pair != NULL;
pair = nvlist_next_nvpair(cb->cb_nvl, pair)) {
zfs_handle_t *zhp = zfs_open(g_zfs, nvpair_name(pair),
ZFS_TYPE_SNAPSHOT);
if (zhp != NULL) {
boolean_t defer = cb->cb_defer_destroy;
int err;
/*
* We can't defer destroy non-snapshots, so set it to
* false while destroying the clones.
*/
cb->cb_defer_destroy = B_FALSE;
err = zfs_iter_dependents(zhp, B_FALSE,
destroy_callback, cb);
cb->cb_defer_destroy = defer;
zfs_close(zhp);
if (err != 0)
return (err);
}
}
return (0);
}
static int
zfs_do_destroy(int argc, char **argv)
{
destroy_cbdata_t cb = { 0 };
int rv = 0;
int err = 0;
int c;
zfs_handle_t *zhp = NULL;
char *at, *pound;
zfs_type_t type = ZFS_TYPE_DATASET;
/* check options */
while ((c = getopt(argc, argv, "vpndfrR")) != -1) {
switch (c) {
case 'v':
cb.cb_verbose = B_TRUE;
break;
case 'p':
cb.cb_verbose = B_TRUE;
cb.cb_parsable = B_TRUE;
break;
case 'n':
cb.cb_dryrun = B_TRUE;
break;
case 'd':
cb.cb_defer_destroy = B_TRUE;
type = ZFS_TYPE_SNAPSHOT;
break;
case 'f':
cb.cb_force = B_TRUE;
break;
case 'r':
cb.cb_recurse = B_TRUE;
break;
case 'R':
cb.cb_recurse = B_TRUE;
cb.cb_doclones = B_TRUE;
break;
case '?':
default:
(void) fprintf(stderr, gettext("invalid option '%c'\n"),
optopt);
usage(B_FALSE);
}
}
argc -= optind;
argv += optind;
/* check number of arguments */
if (argc == 0) {
(void) fprintf(stderr, gettext("missing dataset argument\n"));
usage(B_FALSE);
}
if (argc > 1) {
(void) fprintf(stderr, gettext("too many arguments\n"));
usage(B_FALSE);
}
at = strchr(argv[0], '@');
pound = strchr(argv[0], '#');
if (at != NULL) {
/* Build the list of snaps to destroy in cb_nvl. */
cb.cb_nvl = fnvlist_alloc();
*at = '\0';
zhp = zfs_open(g_zfs, argv[0],
ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
if (zhp == NULL) {
nvlist_free(cb.cb_nvl);
return (1);
}
cb.cb_snapspec = at + 1;
if (gather_snapshots(zfs_handle_dup(zhp), &cb) != 0 ||
cb.cb_error) {
rv = 1;
goto out;
}
if (nvlist_empty(cb.cb_nvl)) {
(void) fprintf(stderr, gettext("could not find any "
"snapshots to destroy; check snapshot names.\n"));
rv = 1;
goto out;
}
if (cb.cb_verbose) {
char buf[16];
zfs_nicebytes(cb.cb_snapused, buf, sizeof (buf));
if (cb.cb_parsable) {
(void) printf("reclaim\t%llu\n",
(u_longlong_t)cb.cb_snapused);
} else if (cb.cb_dryrun) {
(void) printf(gettext("would reclaim %s\n"),
buf);
} else {
(void) printf(gettext("will reclaim %s\n"),
buf);
}
}
if (!cb.cb_dryrun) {
if (cb.cb_doclones) {
cb.cb_batchedsnaps = fnvlist_alloc();
err = destroy_clones(&cb);
if (err == 0) {
err = zfs_destroy_snaps_nvl(g_zfs,
cb.cb_batchedsnaps, B_FALSE);
}
if (err != 0) {
rv = 1;
goto out;
}
}
if (err == 0) {
err = zfs_destroy_snaps_nvl(g_zfs, cb.cb_nvl,
cb.cb_defer_destroy);
}
}
if (err != 0)
rv = 1;
} else if (pound != NULL) {
int err;
nvlist_t *nvl;
if (cb.cb_dryrun) {
(void) fprintf(stderr,
"dryrun is not supported with bookmark\n");
return (-1);
}
if (cb.cb_defer_destroy) {
(void) fprintf(stderr,
"defer destroy is not supported with bookmark\n");
return (-1);
}
if (cb.cb_recurse) {
(void) fprintf(stderr,
"recursive is not supported with bookmark\n");
return (-1);
}
/*
* Unfortunately, zfs_bookmark() doesn't honor the
* casesensitivity setting. However, we can't simply
* remove this check, because lzc_destroy_bookmarks()
* ignores non-existent bookmarks, so this is necessary
* to get a proper error message.
*/
if (!zfs_bookmark_exists(argv[0])) {
(void) fprintf(stderr, gettext("bookmark '%s' "
"does not exist.\n"), argv[0]);
return (1);
}
nvl = fnvlist_alloc();
fnvlist_add_boolean(nvl, argv[0]);
err = lzc_destroy_bookmarks(nvl, NULL);
if (err != 0) {
(void) zfs_standard_error(g_zfs, err,
"cannot destroy bookmark");
}
nvlist_free(nvl);
return (err);
} else {
/* Open the given dataset */
if ((zhp = zfs_open(g_zfs, argv[0], type)) == NULL)
return (1);
cb.cb_target = zhp;
/*
* Perform an explicit check for pools before going any further.
*/
if (!cb.cb_recurse && strchr(zfs_get_name(zhp), '/') == NULL &&
zfs_get_type(zhp) == ZFS_TYPE_FILESYSTEM) {
(void) fprintf(stderr, gettext("cannot destroy '%s': "
"operation does not apply to pools\n"),
zfs_get_name(zhp));
(void) fprintf(stderr, gettext("use 'zfs destroy -r "
"%s' to destroy all datasets in the pool\n"),
zfs_get_name(zhp));
(void) fprintf(stderr, gettext("use 'zpool destroy %s' "
"to destroy the pool itself\n"), zfs_get_name(zhp));
rv = 1;
goto out;
}
/*
* Check for any dependents and/or clones.
*/
cb.cb_first = B_TRUE;
if (!cb.cb_doclones &&
zfs_iter_dependents(zhp, B_TRUE, destroy_check_dependent,
&cb) != 0) {
rv = 1;
goto out;
}
if (cb.cb_error) {
rv = 1;
goto out;
}
cb.cb_batchedsnaps = fnvlist_alloc();
if (zfs_iter_dependents(zhp, B_FALSE, destroy_callback,
&cb) != 0) {
rv = 1;
goto out;
}
/*
* Do the real thing. The callback will close the
* handle regardless of whether it succeeds or not.
*/
err = destroy_callback(zhp, &cb);
zhp = NULL;
if (err == 0) {
err = zfs_destroy_snaps_nvl(g_zfs,
cb.cb_batchedsnaps, cb.cb_defer_destroy);
}
if (err != 0 || cb.cb_error == B_TRUE)
rv = 1;
}
out:
fnvlist_free(cb.cb_batchedsnaps);
fnvlist_free(cb.cb_nvl);
if (zhp != NULL)
zfs_close(zhp);
return (rv);
}
static boolean_t
is_recvd_column(zprop_get_cbdata_t *cbp)
{
int i;
zfs_get_column_t col;
for (i = 0; i < ZFS_GET_NCOLS &&
(col = cbp->cb_columns[i]) != GET_COL_NONE; i++)
if (col == GET_COL_RECVD)
return (B_TRUE);
return (B_FALSE);
}
/*
* zfs get [-rHp] [-o all | field[,field]...] [-s source[,source]...]
* < all | property[,property]... > < fs | snap | vol > ...
*
* -r recurse over any child datasets
* -H scripted mode. Headers are stripped, and fields are separated
* by tabs instead of spaces.
* -o Set of fields to display. One of "name,property,value,
* received,source". Default is "name,property,value,source".
* "all" is an alias for all five.
* -s Set of sources to allow. One of
* "local,default,inherited,received,temporary,none". Default is
* all six.
* -p Display values in parsable (literal) format.
*
* Prints properties for the given datasets. The user can control which
* columns to display as well as which property types to allow.
*/
/*
* Invoked to display the properties for a single dataset.
*/
static int
get_callback(zfs_handle_t *zhp, void *data)
{
char buf[ZFS_MAXPROPLEN];
char rbuf[ZFS_MAXPROPLEN];
zprop_source_t sourcetype;
char source[ZFS_MAX_DATASET_NAME_LEN];
zprop_get_cbdata_t *cbp = data;
nvlist_t *user_props = zfs_get_user_props(zhp);
zprop_list_t *pl = cbp->cb_proplist;
nvlist_t *propval;
char *strval;
char *sourceval;
boolean_t received = is_recvd_column(cbp);
for (; pl != NULL; pl = pl->pl_next) {
char *recvdval = NULL;
/*
* Skip the special fake placeholder. This will also skip over
* the name property when 'all' is specified.
*/
if (pl->pl_prop == ZFS_PROP_NAME &&
pl == cbp->cb_proplist)
continue;
if (pl->pl_prop != ZPROP_INVAL) {
if (zfs_prop_get(zhp, pl->pl_prop, buf,
sizeof (buf), &sourcetype, source,
sizeof (source),
cbp->cb_literal) != 0) {
if (pl->pl_all)
continue;
if (!zfs_prop_valid_for_type(pl->pl_prop,
ZFS_TYPE_DATASET, B_FALSE)) {
(void) fprintf(stderr,
gettext("No such property '%s'\n"),
zfs_prop_to_name(pl->pl_prop));
continue;
}
sourcetype = ZPROP_SRC_NONE;
(void) strlcpy(buf, "-", sizeof (buf));
}
if (received && (zfs_prop_get_recvd(zhp,
zfs_prop_to_name(pl->pl_prop), rbuf, sizeof (rbuf),
cbp->cb_literal) == 0))
recvdval = rbuf;
zprop_print_one_property(zfs_get_name(zhp), cbp,
zfs_prop_to_name(pl->pl_prop),
buf, sourcetype, source, recvdval);
} else if (zfs_prop_userquota(pl->pl_user_prop)) {
sourcetype = ZPROP_SRC_LOCAL;
if (zfs_prop_get_userquota(zhp, pl->pl_user_prop,
buf, sizeof (buf), cbp->cb_literal) != 0) {
sourcetype = ZPROP_SRC_NONE;
(void) strlcpy(buf, "-", sizeof (buf));
}
zprop_print_one_property(zfs_get_name(zhp), cbp,
pl->pl_user_prop, buf, sourcetype, source, NULL);
} else if (zfs_prop_written(pl->pl_user_prop)) {
sourcetype = ZPROP_SRC_LOCAL;
if (zfs_prop_get_written(zhp, pl->pl_user_prop,
buf, sizeof (buf), cbp->cb_literal) != 0) {
sourcetype = ZPROP_SRC_NONE;
(void) strlcpy(buf, "-", sizeof (buf));
}
zprop_print_one_property(zfs_get_name(zhp), cbp,
pl->pl_user_prop, buf, sourcetype, source, NULL);
} else {
if (nvlist_lookup_nvlist(user_props,
pl->pl_user_prop, &propval) != 0) {
if (pl->pl_all)
continue;
sourcetype = ZPROP_SRC_NONE;
strval = "-";
} else {
verify(nvlist_lookup_string(propval,
ZPROP_VALUE, &strval) == 0);
verify(nvlist_lookup_string(propval,
ZPROP_SOURCE, &sourceval) == 0);
if (strcmp(sourceval,
zfs_get_name(zhp)) == 0) {
sourcetype = ZPROP_SRC_LOCAL;
} else if (strcmp(sourceval,
ZPROP_SOURCE_VAL_RECVD) == 0) {
sourcetype = ZPROP_SRC_RECEIVED;
} else {
sourcetype = ZPROP_SRC_INHERITED;
(void) strlcpy(source,
sourceval, sizeof (source));
}
}
if (received && (zfs_prop_get_recvd(zhp,
pl->pl_user_prop, rbuf, sizeof (rbuf),
cbp->cb_literal) == 0))
recvdval = rbuf;
zprop_print_one_property(zfs_get_name(zhp), cbp,
pl->pl_user_prop, strval, sourcetype,
source, recvdval);
}
}
return (0);
}
static int
zfs_do_get(int argc, char **argv)
{
zprop_get_cbdata_t cb = { 0 };
int i, c, flags = ZFS_ITER_ARGS_CAN_BE_PATHS;
int types = ZFS_TYPE_DATASET | ZFS_TYPE_BOOKMARK;
char *fields;
int ret = 0;
int limit = 0;
zprop_list_t fake_name = { 0 };
/*
* Set up default columns and sources.
*/
cb.cb_sources = ZPROP_SRC_ALL;
cb.cb_columns[0] = GET_COL_NAME;
cb.cb_columns[1] = GET_COL_PROPERTY;
cb.cb_columns[2] = GET_COL_VALUE;
cb.cb_columns[3] = GET_COL_SOURCE;
cb.cb_type = ZFS_TYPE_DATASET;
/* check options */
while ((c = getopt(argc, argv, ":d:o:s:rt:Hp")) != -1) {
switch (c) {
case 'p':
cb.cb_literal = B_TRUE;
break;
case 'd':
limit = parse_depth(optarg, &flags);
break;
case 'r':
flags |= ZFS_ITER_RECURSE;
break;
case 'H':
cb.cb_scripted = B_TRUE;
break;
case ':':
(void) fprintf(stderr, gettext("missing argument for "
"'%c' option\n"), optopt);
usage(B_FALSE);
break;
case 'o':
/*
* Process the set of columns to display. We zero out
* the structure to give us a blank slate.
*/
memset(&cb.cb_columns, 0, sizeof (cb.cb_columns));
i = 0;
for (char *tok; (tok = strsep(&optarg, ",")); ) {
static const char *const col_subopts[] =
{ "name", "property", "value",
"received", "source", "all" };
static const zfs_get_column_t col_subopt_col[] =
{ GET_COL_NAME, GET_COL_PROPERTY, GET_COL_VALUE,
GET_COL_RECVD, GET_COL_SOURCE };
static const int col_subopt_flags[] =
{ 0, 0, 0, ZFS_ITER_RECVD_PROPS, 0 };
if (i == ZFS_GET_NCOLS) {
(void) fprintf(stderr, gettext("too "
"many fields given to -o "
"option\n"));
usage(B_FALSE);
}
for (c = 0; c < ARRAY_SIZE(col_subopts); ++c)
if (strcmp(tok, col_subopts[c]) == 0)
goto found;
(void) fprintf(stderr,
gettext("invalid column name '%s'\n"), tok);
usage(B_FALSE);
found:
if (c >= 5) {
if (i > 0) {
(void) fprintf(stderr,
gettext("\"all\" conflicts "
"with specific fields "
"given to -o option\n"));
usage(B_FALSE);
}
memcpy(cb.cb_columns, col_subopt_col,
sizeof (col_subopt_col));
flags |= ZFS_ITER_RECVD_PROPS;
i = ZFS_GET_NCOLS;
} else {
cb.cb_columns[i++] = col_subopt_col[c];
flags |= col_subopt_flags[c];
}
}
break;
case 's':
cb.cb_sources = 0;
for (char *tok; (tok = strsep(&optarg, ",")); ) {
static const char *const source_opt[] = {
"local", "default",
"inherited", "received",
"temporary", "none" };
static const int source_flg[] = {
ZPROP_SRC_LOCAL, ZPROP_SRC_DEFAULT,
ZPROP_SRC_INHERITED, ZPROP_SRC_RECEIVED,
ZPROP_SRC_TEMPORARY, ZPROP_SRC_NONE };
for (i = 0; i < ARRAY_SIZE(source_opt); ++i)
if (strcmp(tok, source_opt[i]) == 0) {
cb.cb_sources |= source_flg[i];
goto found2;
}
(void) fprintf(stderr,
gettext("invalid source '%s'\n"), tok);
usage(B_FALSE);
found2:;
}
break;
case 't':
types = 0;
flags &= ~ZFS_ITER_PROP_LISTSNAPS;
for (char *tok; (tok = strsep(&optarg, ",")); ) {
static const char *const type_opts[] = {
"filesystem", "volume",
"snapshot", "snap",
"bookmark",
"all" };
static const int type_types[] = {
ZFS_TYPE_FILESYSTEM, ZFS_TYPE_VOLUME,
ZFS_TYPE_SNAPSHOT, ZFS_TYPE_SNAPSHOT,
ZFS_TYPE_BOOKMARK,
ZFS_TYPE_DATASET | ZFS_TYPE_BOOKMARK };
for (i = 0; i < ARRAY_SIZE(type_opts); ++i)
if (strcmp(tok, type_opts[i]) == 0) {
types |= type_types[i];
goto found3;
}
(void) fprintf(stderr,
gettext("invalid type '%s'\n"), tok);
usage(B_FALSE);
found3:;
}
break;
case '?':
(void) fprintf(stderr, gettext("invalid option '%c'\n"),
optopt);
usage(B_FALSE);
}
}
argc -= optind;
argv += optind;
if (argc < 1) {
(void) fprintf(stderr, gettext("missing property "
"argument\n"));
usage(B_FALSE);
}
fields = argv[0];
/*
* Handle users who want to get all snapshots or bookmarks
* of a dataset (ex. 'zfs get -t snapshot refer <dataset>').
*/
if ((types == ZFS_TYPE_SNAPSHOT || types == ZFS_TYPE_BOOKMARK) &&
argc > 1 && (flags & ZFS_ITER_RECURSE) == 0 && limit == 0) {
flags |= (ZFS_ITER_DEPTH_LIMIT | ZFS_ITER_RECURSE);
limit = 1;
}
if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
!= 0)
usage(B_FALSE);
argc--;
argv++;
/*
* As part of zfs_expand_proplist(), we keep track of the maximum column
* width for each property. For the 'NAME' (and 'SOURCE') columns, we
* need to know the maximum name length. However, the user likely did
* not specify 'name' as one of the properties to fetch, so we need to
* make sure we always include at least this property for
* print_get_headers() to work properly.
*/
if (cb.cb_proplist != NULL) {
fake_name.pl_prop = ZFS_PROP_NAME;
fake_name.pl_width = strlen(gettext("NAME"));
fake_name.pl_next = cb.cb_proplist;
cb.cb_proplist = &fake_name;
}
cb.cb_first = B_TRUE;
/* run for each object */
ret = zfs_for_each(argc, argv, flags, types, NULL,
&cb.cb_proplist, limit, get_callback, &cb);
if (cb.cb_proplist == &fake_name)
zprop_free_list(fake_name.pl_next);
else
zprop_free_list(cb.cb_proplist);
return (ret);
}
/*
* inherit [-rS] <property> <fs|vol> ...
*
* -r Recurse over all children
* -S Revert to received value, if any
*
* For each dataset specified on the command line, inherit the given property
* from its parent. Inheriting a property at the pool level will cause it to
* use the default value. The '-r' flag will recurse over all children, and is
* useful for setting a property on a hierarchy-wide basis, regardless of any
* local modifications for each dataset.
*/
typedef struct inherit_cbdata {
const char *cb_propname;
boolean_t cb_received;
} inherit_cbdata_t;
static int
inherit_recurse_cb(zfs_handle_t *zhp, void *data)
{
inherit_cbdata_t *cb = data;
zfs_prop_t prop = zfs_name_to_prop(cb->cb_propname);
/*
* If we're doing it recursively, then ignore properties that
* are not valid for this type of dataset.
*/
if (prop != ZPROP_INVAL &&
!zfs_prop_valid_for_type(prop, zfs_get_type(zhp), B_FALSE))
return (0);
return (zfs_prop_inherit(zhp, cb->cb_propname, cb->cb_received) != 0);
}
static int
inherit_cb(zfs_handle_t *zhp, void *data)
{
inherit_cbdata_t *cb = data;
return (zfs_prop_inherit(zhp, cb->cb_propname, cb->cb_received) != 0);
}
static int
zfs_do_inherit(int argc, char **argv)
{
int c;
zfs_prop_t prop;
inherit_cbdata_t cb = { 0 };
char *propname;
int ret = 0;
int flags = 0;
boolean_t received = B_FALSE;
/* check options */
while ((c = getopt(argc, argv, "rS")) != -1) {
switch (c) {
case 'r':
flags |= ZFS_ITER_RECURSE;
break;
case 'S':
received = B_TRUE;
break;
case '?':
default:
(void) fprintf(stderr, gettext("invalid option '%c'\n"),
optopt);
usage(B_FALSE);
}
}
argc -= optind;
argv += optind;
/* check number of arguments */
if (argc < 1) {
(void) fprintf(stderr, gettext("missing property argument\n"));
usage(B_FALSE);
}
if (argc < 2) {
(void) fprintf(stderr, gettext("missing dataset argument\n"));
usage(B_FALSE);
}
propname = argv[0];
argc--;
argv++;
if ((prop = zfs_name_to_prop(propname)) != ZPROP_INVAL) {
if (zfs_prop_readonly(prop)) {
(void) fprintf(stderr, gettext(
"%s property is read-only\n"),
propname);
return (1);
}
if (!zfs_prop_inheritable(prop) && !received) {
(void) fprintf(stderr, gettext("'%s' property cannot "
"be inherited\n"), propname);
if (prop == ZFS_PROP_QUOTA ||
prop == ZFS_PROP_RESERVATION ||
prop == ZFS_PROP_REFQUOTA ||
prop == ZFS_PROP_REFRESERVATION) {
(void) fprintf(stderr, gettext("use 'zfs set "
"%s=none' to clear\n"), propname);
(void) fprintf(stderr, gettext("use 'zfs "
"inherit -S %s' to revert to received "
"value\n"), propname);
}
return (1);
}
if (received && (prop == ZFS_PROP_VOLSIZE ||
prop == ZFS_PROP_VERSION)) {
(void) fprintf(stderr, gettext("'%s' property cannot "
"be reverted to a received value\n"), propname);
return (1);
}
} else if (!zfs_prop_user(propname)) {
(void) fprintf(stderr, gettext("invalid property '%s'\n"),
propname);
usage(B_FALSE);
}
cb.cb_propname = propname;
cb.cb_received = received;
if (flags & ZFS_ITER_RECURSE) {
ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
NULL, NULL, 0, inherit_recurse_cb, &cb);
} else {
ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_DATASET,
NULL, NULL, 0, inherit_cb, &cb);
}
return (ret);
}
typedef struct upgrade_cbdata {
uint64_t cb_numupgraded;
uint64_t cb_numsamegraded;
uint64_t cb_numfailed;
uint64_t cb_version;
boolean_t cb_newer;
boolean_t cb_foundone;
char cb_lastfs[ZFS_MAX_DATASET_NAME_LEN];
} upgrade_cbdata_t;
static int
same_pool(zfs_handle_t *zhp, const char *name)
{
int len1 = strcspn(name, "/@");
const char *zhname = zfs_get_name(zhp);
int len2 = strcspn(zhname, "/@");
if (len1 != len2)
return (B_FALSE);
return (strncmp(name, zhname, len1) == 0);
}
static int
upgrade_list_callback(zfs_handle_t *zhp, void *data)
{
upgrade_cbdata_t *cb = data;
int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
/* list if it's old/new */
if ((!cb->cb_newer && version < ZPL_VERSION) ||
(cb->cb_newer && version > ZPL_VERSION)) {
char *str;
if (cb->cb_newer) {
str = gettext("The following filesystems are "
"formatted using a newer software version and\n"
"cannot be accessed on the current system.\n\n");
} else {
str = gettext("The following filesystems are "
"out of date, and can be upgraded. After being\n"
"upgraded, these filesystems (and any 'zfs send' "
"streams generated from\n"
"subsequent snapshots) will no longer be "
"accessible by older software versions.\n\n");
}
if (!cb->cb_foundone) {
(void) puts(str);
(void) printf(gettext("VER FILESYSTEM\n"));
(void) printf(gettext("--- ------------\n"));
cb->cb_foundone = B_TRUE;
}
(void) printf("%2u %s\n", version, zfs_get_name(zhp));
}
return (0);
}
static int
upgrade_set_callback(zfs_handle_t *zhp, void *data)
{
upgrade_cbdata_t *cb = data;
int version = zfs_prop_get_int(zhp, ZFS_PROP_VERSION);
int needed_spa_version;
int spa_version;
if (zfs_spa_version(zhp, &spa_version) < 0)
return (-1);
needed_spa_version = zfs_spa_version_map(cb->cb_version);
if (needed_spa_version < 0)
return (-1);
if (spa_version < needed_spa_version) {
/* can't upgrade */
(void) printf(gettext("%s: can not be "
"upgraded; the pool version needs to first "
"be upgraded\nto version %d\n\n"),
zfs_get_name(zhp), needed_spa_version);
cb->cb_numfailed++;
return (0);
}
/* upgrade */
if (version < cb->cb_version) {
char verstr[16];
(void) snprintf(verstr, sizeof (verstr),
"%llu", (u_longlong_t)cb->cb_version);
if (cb->cb_lastfs[0] && !same_pool(zhp, cb->cb_lastfs)) {
/*
* If they did "zfs upgrade -a", then we could
* be doing ioctls to different pools. We need
* to log this history once to each pool, and bypass
* the normal history logging that happens in main().
*/
(void) zpool_log_history(g_zfs, history_str);
log_history = B_FALSE;
}
if (zfs_prop_set(zhp, "version", verstr) == 0)
cb->cb_numupgraded++;
else
cb->cb_numfailed++;
(void) strcpy(cb->cb_lastfs, zfs_get_name(zhp));
} else if (version > cb->cb_version) {
/* can't downgrade */
(void) printf(gettext("%s: can not be downgraded; "
"it is already at version %u\n"),
zfs_get_name(zhp), version);
cb->cb_numfailed++;
} else {
cb->cb_numsamegraded++;
}
return (0);
}
/*
* zfs upgrade
* zfs upgrade -v
* zfs upgrade [-r] [-V <version>] <-a | filesystem>
*/
static int
zfs_do_upgrade(int argc, char **argv)
{
boolean_t all = B_FALSE;
boolean_t showversions = B_FALSE;
int ret = 0;
upgrade_cbdata_t cb = { 0 };
int c;
int flags = ZFS_ITER_ARGS_CAN_BE_PATHS;
/* check options */
while ((c = getopt(argc, argv, "rvV:a")) != -1) {
switch (c) {
case 'r':
flags |= ZFS_ITER_RECURSE;
break;
case 'v':
showversions = B_TRUE;
break;
case 'V':
if (zfs_prop_string_to_index(ZFS_PROP_VERSION,
optarg, &cb.cb_version) != 0) {
(void) fprintf(stderr,
gettext("invalid version %s\n"), optarg);
usage(B_FALSE);
}
break;
case 'a':
all = B_TRUE;
break;
case '?':
default:
(void) fprintf(stderr, gettext("invalid option '%c'\n"),
optopt);
usage(B_FALSE);
}
}
argc -= optind;
argv += optind;
if ((!all && !argc) && ((flags & ZFS_ITER_RECURSE) | cb.cb_version))
usage(B_FALSE);
if (showversions && (flags & ZFS_ITER_RECURSE || all ||
cb.cb_version || argc))
usage(B_FALSE);
if ((all || argc) && (showversions))
usage(B_FALSE);
if (all && argc)
usage(B_FALSE);
if (showversions) {
/* Show info on available versions. */
(void) printf(gettext("The following filesystem versions are "
"supported:\n\n"));
(void) printf(gettext("VER DESCRIPTION\n"));
(void) printf("--- -----------------------------------------"
"---------------\n");
(void) printf(gettext(" 1 Initial ZFS filesystem version\n"));
(void) printf(gettext(" 2 Enhanced directory entries\n"));
(void) printf(gettext(" 3 Case insensitive and filesystem "
"user identifier (FUID)\n"));
(void) printf(gettext(" 4 userquota, groupquota "
"properties\n"));
(void) printf(gettext(" 5 System attributes\n"));
(void) printf(gettext("\nFor more information on a particular "
"version, including supported releases,\n"));
(void) printf("see the ZFS Administration Guide.\n\n");
ret = 0;
} else if (argc || all) {
/* Upgrade filesystems */
if (cb.cb_version == 0)
cb.cb_version = ZPL_VERSION;
ret = zfs_for_each(argc, argv, flags, ZFS_TYPE_FILESYSTEM,
NULL, NULL, 0, upgrade_set_callback, &cb);
(void) printf(gettext("%llu filesystems upgraded\n"),
(u_longlong_t)cb.cb_numupgraded);
if (cb.cb_numsamegraded) {
(void) printf(gettext("%llu filesystems already at "
"this version\n"),
(u_longlong_t)cb.cb_numsamegraded);
}
if (cb.cb_numfailed != 0)
ret = 1;
} else {
/* List old-version filesystems */
boolean_t found;
(void) printf(gettext("This system is currently running "
"ZFS filesystem version %llu.\n\n"), ZPL_VERSION);
flags |= ZFS_ITER_RECURSE;
ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
NULL, NULL, 0, upgrade_list_callback, &cb);
found = cb.cb_foundone;
cb.cb_foundone = B_FALSE;
cb.cb_newer = B_TRUE;
ret = zfs_for_each(0, NULL, flags, ZFS_TYPE_FILESYSTEM,
NULL, NULL, 0, upgrade_list_callback, &cb);
if (!cb.cb_foundone && !found) {
(void) printf(gettext("All filesystems are "
"formatted with the current version.\n"));
}
}
return (ret);
}
/*
* zfs userspace [-Hinp] [-o field[,...]] [-s field [-s field]...]
* [-S field [-S field]...] [-t type[,...]]
* filesystem | snapshot | path
* zfs groupspace [-Hinp] [-o field[,...]] [-s field [-s field]...]
* [-S field [-S field]...] [-t type[,...]]
* filesystem | snapshot | path
* zfs projectspace [-Hp] [-o field[,...]] [-s field [-s field]...]
* [-S field [-S field]...] filesystem | snapshot | path
*
* -H Scripted mode; elide headers and separate columns by tabs.
* -i Translate SID to POSIX ID.
* -n Print numeric ID instead of user/group name.
* -o Control which fields to display.
* -p Use exact (parsable) numeric output.
* -s Specify sort columns, descending order.
* -S Specify sort columns, ascending order.
* -t Control which object types to display.
*
* Displays space consumed by, and quotas on, each user in the specified
* filesystem or snapshot.
*/
/* us_field_types, us_field_hdr and us_field_names should be kept in sync */
enum us_field_types {
USFIELD_TYPE,
USFIELD_NAME,
USFIELD_USED,
USFIELD_QUOTA,
USFIELD_OBJUSED,
USFIELD_OBJQUOTA
};
static char *us_field_hdr[] = { "TYPE", "NAME", "USED", "QUOTA",
"OBJUSED", "OBJQUOTA" };
static char *us_field_names[] = { "type", "name", "used", "quota",
"objused", "objquota" };
#define USFIELD_LAST (sizeof (us_field_names) / sizeof (char *))
#define USTYPE_PSX_GRP (1 << 0)
#define USTYPE_PSX_USR (1 << 1)
#define USTYPE_SMB_GRP (1 << 2)
#define USTYPE_SMB_USR (1 << 3)
#define USTYPE_PROJ (1 << 4)
#define USTYPE_ALL \
(USTYPE_PSX_GRP | USTYPE_PSX_USR | USTYPE_SMB_GRP | USTYPE_SMB_USR | \
USTYPE_PROJ)
static int us_type_bits[] = {
USTYPE_PSX_GRP,
USTYPE_PSX_USR,
USTYPE_SMB_GRP,
USTYPE_SMB_USR,
USTYPE_ALL
};
static char *us_type_names[] = { "posixgroup", "posixuser", "smbgroup",
"smbuser", "all" };
typedef struct us_node {
nvlist_t *usn_nvl;
uu_avl_node_t usn_avlnode;
uu_list_node_t usn_listnode;
} us_node_t;
typedef struct us_cbdata {
nvlist_t **cb_nvlp;
uu_avl_pool_t *cb_avl_pool;
uu_avl_t *cb_avl;
boolean_t cb_numname;
boolean_t cb_nicenum;
boolean_t cb_sid2posix;
zfs_userquota_prop_t cb_prop;
zfs_sort_column_t *cb_sortcol;
size_t cb_width[USFIELD_LAST];
} us_cbdata_t;
static boolean_t us_populated = B_FALSE;
typedef struct {
zfs_sort_column_t *si_sortcol;
boolean_t si_numname;
} us_sort_info_t;
static int
us_field_index(char *field)
{
int i;
for (i = 0; i < USFIELD_LAST; i++) {
if (strcmp(field, us_field_names[i]) == 0)
return (i);
}
return (-1);
}
static int
us_compare(const void *larg, const void *rarg, void *unused)
{
const us_node_t *l = larg;
const us_node_t *r = rarg;
us_sort_info_t *si = (us_sort_info_t *)unused;
zfs_sort_column_t *sortcol = si->si_sortcol;
boolean_t numname = si->si_numname;
nvlist_t *lnvl = l->usn_nvl;
nvlist_t *rnvl = r->usn_nvl;
int rc = 0;
boolean_t lvb, rvb;
for (; sortcol != NULL; sortcol = sortcol->sc_next) {
char *lvstr = "";
char *rvstr = "";
uint32_t lv32 = 0;
uint32_t rv32 = 0;
uint64_t lv64 = 0;
uint64_t rv64 = 0;
zfs_prop_t prop = sortcol->sc_prop;
const char *propname = NULL;
boolean_t reverse = sortcol->sc_reverse;
switch (prop) {
case ZFS_PROP_TYPE:
propname = "type";
(void) nvlist_lookup_uint32(lnvl, propname, &lv32);
(void) nvlist_lookup_uint32(rnvl, propname, &rv32);
if (rv32 != lv32)
rc = (rv32 < lv32) ? 1 : -1;
break;
case ZFS_PROP_NAME:
propname = "name";
if (numname) {
compare_nums:
(void) nvlist_lookup_uint64(lnvl, propname,
&lv64);
(void) nvlist_lookup_uint64(rnvl, propname,
&rv64);
if (rv64 != lv64)
rc = (rv64 < lv64) ? 1 : -1;
} else {
if ((nvlist_lookup_string(lnvl, propname,
&lvstr) == ENOENT) ||
(nvlist_lookup_string(rnvl, propname,
&rvstr) == ENOENT)) {
goto compare_nums;
}
rc = strcmp(lvstr, rvstr);
}
break;
case ZFS_PROP_USED:
case ZFS_PROP_QUOTA:
if (!us_populated)
break;
if (prop == ZFS_PROP_USED)
propname = "used";
else
propname = "quota";
(void) nvlist_lookup_uint64(lnvl, propname, &lv64);
(void) nvlist_lookup_uint64(rnvl, propname, &rv64);
if (rv64 != lv64)
rc = (rv64 < lv64) ? 1 : -1;
break;
default:
break;
}
if (rc != 0) {
if (rc < 0)
return (reverse ? 1 : -1);
else
return (reverse ? -1 : 1);
}
}
/*
* If entries still seem to be the same, check if they are of the same
* type (smbentity is added only if we are doing SID to POSIX ID
* translation where we can have duplicate type/name combinations).
*/
if (nvlist_lookup_boolean_value(lnvl, "smbentity", &lvb) == 0 &&
nvlist_lookup_boolean_value(rnvl, "smbentity", &rvb) == 0 &&
lvb != rvb)
return (lvb < rvb ? -1 : 1);
return (0);
}
static boolean_t
zfs_prop_is_user(unsigned p)
{
return (p == ZFS_PROP_USERUSED || p == ZFS_PROP_USERQUOTA ||
p == ZFS_PROP_USEROBJUSED || p == ZFS_PROP_USEROBJQUOTA);
}
static boolean_t
zfs_prop_is_group(unsigned p)
{
return (p == ZFS_PROP_GROUPUSED || p == ZFS_PROP_GROUPQUOTA ||
p == ZFS_PROP_GROUPOBJUSED || p == ZFS_PROP_GROUPOBJQUOTA);
}
static boolean_t
zfs_prop_is_project(unsigned p)
{
return (p == ZFS_PROP_PROJECTUSED || p == ZFS_PROP_PROJECTQUOTA ||
p == ZFS_PROP_PROJECTOBJUSED || p == ZFS_PROP_PROJECTOBJQUOTA);
}
static inline const char *
us_type2str(unsigned field_type)
{
switch (field_type) {
case USTYPE_PSX_USR:
return ("POSIX User");
case USTYPE_PSX_GRP:
return ("POSIX Group");
case USTYPE_SMB_USR:
return ("SMB User");
case USTYPE_SMB_GRP:
return ("SMB Group");
case USTYPE_PROJ:
return ("Project");
default:
return ("Undefined");
}
}
static int
userspace_cb(void *arg, const char *domain, uid_t rid, uint64_t space)
{
us_cbdata_t *cb = (us_cbdata_t *)arg;
zfs_userquota_prop_t prop = cb->cb_prop;
char *name = NULL;
char *propname;
char sizebuf[32];
us_node_t *node;
uu_avl_pool_t *avl_pool = cb->cb_avl_pool;
uu_avl_t *avl = cb->cb_avl;
uu_avl_index_t idx;
nvlist_t *props;
us_node_t *n;
zfs_sort_column_t *sortcol = cb->cb_sortcol;
unsigned type = 0;
const char *typestr;
size_t namelen;
size_t typelen;
size_t sizelen;
int typeidx, nameidx, sizeidx;
us_sort_info_t sortinfo = { sortcol, cb->cb_numname };
boolean_t smbentity = B_FALSE;
if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
nomem();
node = safe_malloc(sizeof (us_node_t));
uu_avl_node_init(node, &node->usn_avlnode, avl_pool);
node->usn_nvl = props;
if (domain != NULL && domain[0] != '\0') {
#ifdef HAVE_IDMAP
/* SMB */
char sid[MAXNAMELEN + 32];
uid_t id;
uint64_t classes;
int err;
directory_error_t e;
smbentity = B_TRUE;
(void) snprintf(sid, sizeof (sid), "%s-%u", domain, rid);
if (prop == ZFS_PROP_GROUPUSED || prop == ZFS_PROP_GROUPQUOTA) {
type = USTYPE_SMB_GRP;
err = sid_to_id(sid, B_FALSE, &id);
} else {
type = USTYPE_SMB_USR;
err = sid_to_id(sid, B_TRUE, &id);
}
if (err == 0) {
rid = id;
if (!cb->cb_sid2posix) {
e = directory_name_from_sid(NULL, sid, &name,
&classes);
if (e != NULL)
directory_error_free(e);
if (name == NULL)
name = sid;
}
}
#else
nvlist_free(props);
free(node);
return (-1);
#endif /* HAVE_IDMAP */
}
if (cb->cb_sid2posix || domain == NULL || domain[0] == '\0') {
/* POSIX or -i */
if (zfs_prop_is_group(prop)) {
type = USTYPE_PSX_GRP;
if (!cb->cb_numname) {
struct group *g;
if ((g = getgrgid(rid)) != NULL)
name = g->gr_name;
}
} else if (zfs_prop_is_user(prop)) {
type = USTYPE_PSX_USR;
if (!cb->cb_numname) {
struct passwd *p;
if ((p = getpwuid(rid)) != NULL)
name = p->pw_name;
}
} else {
type = USTYPE_PROJ;
}
}
/*
* Make sure that the type/name combination is unique when doing
* SID to POSIX ID translation (hence changing the type from SMB to
* POSIX).
*/
if (cb->cb_sid2posix &&
nvlist_add_boolean_value(props, "smbentity", smbentity) != 0)
nomem();
/* Calculate/update width of TYPE field */
typestr = us_type2str(type);
typelen = strlen(gettext(typestr));
typeidx = us_field_index("type");
if (typelen > cb->cb_width[typeidx])
cb->cb_width[typeidx] = typelen;
if (nvlist_add_uint32(props, "type", type) != 0)
nomem();
/* Calculate/update width of NAME field */
if ((cb->cb_numname && cb->cb_sid2posix) || name == NULL) {
if (nvlist_add_uint64(props, "name", rid) != 0)
nomem();
namelen = snprintf(NULL, 0, "%u", rid);
} else {
if (nvlist_add_string(props, "name", name) != 0)
nomem();
namelen = strlen(name);
}
nameidx = us_field_index("name");
if (nameidx >= 0 && namelen > cb->cb_width[nameidx])
cb->cb_width[nameidx] = namelen;
/*
* Check if this type/name combination is in the list and update it;
* otherwise add new node to the list.
*/
if ((n = uu_avl_find(avl, node, &sortinfo, &idx)) == NULL) {
uu_avl_insert(avl, node, idx);
} else {
nvlist_free(props);
free(node);
node = n;
props = node->usn_nvl;
}
/* Calculate/update width of USED/QUOTA fields */
if (cb->cb_nicenum) {
if (prop == ZFS_PROP_USERUSED || prop == ZFS_PROP_GROUPUSED ||
prop == ZFS_PROP_USERQUOTA || prop == ZFS_PROP_GROUPQUOTA ||
prop == ZFS_PROP_PROJECTUSED ||
prop == ZFS_PROP_PROJECTQUOTA) {
zfs_nicebytes(space, sizebuf, sizeof (sizebuf));
} else {
zfs_nicenum(space, sizebuf, sizeof (sizebuf));
}
} else {
(void) snprintf(sizebuf, sizeof (sizebuf), "%llu",
(u_longlong_t)space);
}
sizelen = strlen(sizebuf);
if (prop == ZFS_PROP_USERUSED || prop == ZFS_PROP_GROUPUSED ||
prop == ZFS_PROP_PROJECTUSED) {
propname = "used";
if (!nvlist_exists(props, "quota"))
(void) nvlist_add_uint64(props, "quota", 0);
} else if (prop == ZFS_PROP_USERQUOTA || prop == ZFS_PROP_GROUPQUOTA ||
prop == ZFS_PROP_PROJECTQUOTA) {
propname = "quota";
if (!nvlist_exists(props, "used"))
(void) nvlist_add_uint64(props, "used", 0);
} else if (prop == ZFS_PROP_USEROBJUSED ||
prop == ZFS_PROP_GROUPOBJUSED || prop == ZFS_PROP_PROJECTOBJUSED) {
propname = "objused";
if (!nvlist_exists(props, "objquota"))
(void) nvlist_add_uint64(props, "objquota", 0);
} else if (prop == ZFS_PROP_USEROBJQUOTA ||
prop == ZFS_PROP_GROUPOBJQUOTA ||
prop == ZFS_PROP_PROJECTOBJQUOTA) {
propname = "objquota";
if (!nvlist_exists(props, "objused"))
(void) nvlist_add_uint64(props, "objused", 0);
} else {
return (-1);
}
sizeidx = us_field_index(propname);
if (sizeidx >= 0 && sizelen > cb->cb_width[sizeidx])
cb->cb_width[sizeidx] = sizelen;
if (nvlist_add_uint64(props, propname, space) != 0)
nomem();
return (0);
}
static void
print_us_node(boolean_t scripted, boolean_t parsable, int *fields, int types,
size_t *width, us_node_t *node)
{
nvlist_t *nvl = node->usn_nvl;
char valstr[MAXNAMELEN];
boolean_t first = B_TRUE;
int cfield = 0;
int field;
uint32_t ustype;
/* Check type */
(void) nvlist_lookup_uint32(nvl, "type", &ustype);
if (!(ustype & types))
return;
while ((field = fields[cfield]) != USFIELD_LAST) {
nvpair_t *nvp = NULL;
data_type_t type;
uint32_t val32;
uint64_t val64;
char *strval = "-";
while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
if (strcmp(nvpair_name(nvp),
us_field_names[field]) == 0)
break;
}
type = nvp == NULL ? DATA_TYPE_UNKNOWN : nvpair_type(nvp);
switch (type) {
case DATA_TYPE_UINT32:
(void) nvpair_value_uint32(nvp, &val32);
break;
case DATA_TYPE_UINT64:
(void) nvpair_value_uint64(nvp, &val64);
break;
case DATA_TYPE_STRING:
(void) nvpair_value_string(nvp, &strval);
break;
case DATA_TYPE_UNKNOWN:
break;
default:
(void) fprintf(stderr, "invalid data type\n");
}
switch (field) {
case USFIELD_TYPE:
if (type == DATA_TYPE_UINT32)
strval = (char *)us_type2str(val32);
break;
case USFIELD_NAME:
if (type == DATA_TYPE_UINT64) {
(void) sprintf(valstr, "%llu",
(u_longlong_t)val64);
strval = valstr;
}
break;
case USFIELD_USED:
case USFIELD_QUOTA:
if (type == DATA_TYPE_UINT64) {
if (parsable) {
(void) sprintf(valstr, "%llu",
(u_longlong_t)val64);
strval = valstr;
} else if (field == USFIELD_QUOTA &&
val64 == 0) {
strval = "none";
} else {
zfs_nicebytes(val64, valstr,
sizeof (valstr));
strval = valstr;
}
}
break;
case USFIELD_OBJUSED:
case USFIELD_OBJQUOTA:
if (type == DATA_TYPE_UINT64) {
if (parsable) {
(void) sprintf(valstr, "%llu",
(u_longlong_t)val64);
strval = valstr;
} else if (field == USFIELD_OBJQUOTA &&
val64 == 0) {
strval = "none";
} else {
zfs_nicenum(val64, valstr,
sizeof (valstr));
strval = valstr;
}
}
break;
}
if (!first) {
if (scripted)
(void) printf("\t");
else
(void) printf(" ");
}
if (scripted)
(void) printf("%s", strval);
else if (field == USFIELD_TYPE || field == USFIELD_NAME)
(void) printf("%-*s", (int)width[field], strval);
else
(void) printf("%*s", (int)width[field], strval);
first = B_FALSE;
cfield++;
}
(void) printf("\n");
}
static void
print_us(boolean_t scripted, boolean_t parsable, int *fields, int types,
size_t *width, boolean_t rmnode, uu_avl_t *avl)
{
us_node_t *node;
const char *col;
int cfield = 0;
int field;
if (!scripted) {
boolean_t first = B_TRUE;
while ((field = fields[cfield]) != USFIELD_LAST) {
col = gettext(us_field_hdr[field]);
if (field == USFIELD_TYPE || field == USFIELD_NAME) {
(void) printf(first ? "%-*s" : " %-*s",
(int)width[field], col);
} else {
(void) printf(first ? "%*s" : " %*s",
(int)width[field], col);
}
first = B_FALSE;
cfield++;
}
(void) printf("\n");
}
for (node = uu_avl_first(avl); node; node = uu_avl_next(avl, node)) {
print_us_node(scripted, parsable, fields, types, width, node);
if (rmnode)
nvlist_free(node->usn_nvl);
}
}
static int
zfs_do_userspace(int argc, char **argv)
{
zfs_handle_t *zhp;
zfs_userquota_prop_t p;
uu_avl_pool_t *avl_pool;
uu_avl_t *avl_tree;
uu_avl_walk_t *walk;
char *delim;
char deffields[] = "type,name,used,quota,objused,objquota";
char *ofield = NULL;
char *tfield = NULL;
int cfield = 0;
int fields[256];
int i;
boolean_t scripted = B_FALSE;
boolean_t prtnum = B_FALSE;
boolean_t parsable = B_FALSE;
boolean_t sid2posix = B_FALSE;
int ret = 0;
int c;
zfs_sort_column_t *sortcol = NULL;
int types = USTYPE_PSX_USR | USTYPE_SMB_USR;
us_cbdata_t cb;
us_node_t *node;
us_node_t *rmnode;
uu_list_pool_t *listpool;
uu_list_t *list;
uu_avl_index_t idx = 0;
uu_list_index_t idx2 = 0;
if (argc < 2)
usage(B_FALSE);
if (strcmp(argv[0], "groupspace") == 0) {
/* Toggle default group types */
types = USTYPE_PSX_GRP | USTYPE_SMB_GRP;
} else if (strcmp(argv[0], "projectspace") == 0) {
types = USTYPE_PROJ;
prtnum = B_TRUE;
}
while ((c = getopt(argc, argv, "nHpo:s:S:t:i")) != -1) {
switch (c) {
case 'n':
if (types == USTYPE_PROJ) {
(void) fprintf(stderr,
gettext("invalid option 'n'\n"));
usage(B_FALSE);
}
prtnum = B_TRUE;
break;
case 'H':
scripted = B_TRUE;
break;
case 'p':
parsable = B_TRUE;
break;
case 'o':
ofield = optarg;
break;
case 's':
case 'S':
if (zfs_add_sort_column(&sortcol, optarg,
c == 's' ? B_FALSE : B_TRUE) != 0) {
(void) fprintf(stderr,
gettext("invalid field '%s'\n"), optarg);
usage(B_FALSE);
}
break;
case 't':
if (types == USTYPE_PROJ) {
(void) fprintf(stderr,
gettext("invalid option 't'\n"));
usage(B_FALSE);
}
tfield = optarg;
break;
case 'i':
if (types == USTYPE_PROJ) {
(void) fprintf(stderr,
gettext("invalid option 'i'\n"));
usage(B_FALSE);
}
sid2posix = B_TRUE;
break;
case ':':
(void) fprintf(stderr, gettext("missing argument for "
"'%c' option\n"), optopt);
usage(B_FALSE);
break;
case '?':
(void) fprintf(stderr, gettext("invalid option '%c'\n"),
optopt);
usage(B_FALSE);
}
}
argc -= optind;
argv += optind;
if (argc < 1) {
(void) fprintf(stderr, gettext("missing dataset name\n"));
usage(B_FALSE);
}
if (argc > 1) {
(void) fprintf(stderr, gettext("too many arguments\n"));
usage(B_FALSE);
}
/* Use default output fields if not specified using -o */
if (ofield == NULL)
ofield = deffields;
do {
if ((delim = strchr(ofield, ',')) != NULL)
*delim = '\0';
if ((fields[cfield++] = us_field_index(ofield)) == -1) {
(void) fprintf(stderr, gettext("invalid type '%s' "
"for -o option\n"), ofield);
return (-1);
}
if (delim != NULL)
ofield = delim + 1;
} while (delim != NULL);
fields[cfield] = USFIELD_LAST;
/* Override output types (-t option) */
if (tfield != NULL) {
types = 0;
do {
boolean_t found = B_FALSE;
if ((delim = strchr(tfield, ',')) != NULL)
*delim = '\0';
for (i = 0; i < sizeof (us_type_bits) / sizeof (int);
i++) {
if (strcmp(tfield, us_type_names[i]) == 0) {
found = B_TRUE;
types |= us_type_bits[i];
break;
}
}
if (!found) {
(void) fprintf(stderr, gettext("invalid type "
"'%s' for -t option\n"), tfield);
return (-1);
}
if (delim != NULL)
tfield = delim + 1;
} while (delim != NULL);
}
if ((zhp = zfs_path_to_zhandle(g_zfs, argv[0], ZFS_TYPE_FILESYSTEM |
ZFS_TYPE_SNAPSHOT)) == NULL)
return (1);
if (zfs_get_underlying_type(zhp) != ZFS_TYPE_FILESYSTEM) {
(void) fprintf(stderr, gettext("operation is only applicable "
"to filesystems and their snapshots\n"));
zfs_close(zhp);
return (1);
}
if ((avl_pool = uu_avl_pool_create("us_avl_pool", sizeof (us_node_t),
offsetof(us_node_t, usn_avlnode), us_compare, UU_DEFAULT)) == NULL)
nomem();
if ((avl_tree = uu_avl_create(avl_pool, NULL, UU_DEFAULT)) == NULL)
nomem();
/* Always add default sorting columns */
(void) zfs_add_sort_column(&sortcol, "type", B_FALSE);
(void) zfs_add_sort_column(&sortcol, "name", B_FALSE);
cb.cb_sortcol = sortcol;
cb.cb_numname = prtnum;
cb.cb_nicenum = !parsable;
cb.cb_avl_pool = avl_pool;
cb.cb_avl = avl_tree;
cb.cb_sid2posix = sid2posix;
for (i = 0; i < USFIELD_LAST; i++)
cb.cb_width[i] = strlen(gettext(us_field_hdr[i]));
for (p = 0; p < ZFS_NUM_USERQUOTA_PROPS; p++) {
if ((zfs_prop_is_user(p) &&
!(types & (USTYPE_PSX_USR | USTYPE_SMB_USR))) ||
(zfs_prop_is_group(p) &&
!(types & (USTYPE_PSX_GRP | USTYPE_SMB_GRP))) ||
(zfs_prop_is_project(p) && types != USTYPE_PROJ))
continue;
cb.cb_prop = p;
if ((ret = zfs_userspace(zhp, p, userspace_cb, &cb)) != 0) {
zfs_close(zhp);
return (ret);
}
}
zfs_close(zhp);
/* Sort the list */
if ((node = uu_avl_first(avl_tree)) == NULL)
return (0);
us_populated = B_TRUE;
listpool = uu_list_pool_create("tmplist", sizeof (us_node_t),
offsetof(us_node_t, usn_listnode), NULL, UU_DEFAULT);
list = uu_list_create(listpool, NULL, UU_DEFAULT);
uu_list_node_init(node, &node->usn_listnode, listpool);
while (node != NULL) {
rmnode = node;
node = uu_avl_next(avl_tree, node);
uu_avl_remove(avl_tree, rmnode);
if (uu_list_find(list, rmnode, NULL, &idx2) == NULL)
uu_list_insert(list, rmnode, idx2);
}
for (node = uu_list_first(list); node != NULL;
node = uu_list_next(list, node)) {
us_sort_info_t sortinfo = { sortcol, cb.cb_numname };
if (uu_avl_find(avl_tree, node, &sortinfo, &idx) == NULL)
uu_avl_insert(avl_tree, node, idx);
}
uu_list_destroy(list);
uu_list_pool_destroy(listpool);
/* Print and free node nvlist memory */
print_us(scripted, parsable, fields, types, cb.cb_width, B_TRUE,
cb.cb_avl);
zfs_free_sort_columns(sortcol);
/* Clean up the AVL tree */
if ((walk = uu_avl_walk_start(cb.cb_avl, UU_WALK_ROBUST)) == NULL)
nomem();
while ((node = uu_avl_walk_next(walk)) != NULL) {
uu_avl_remove(cb.cb_avl, node);
free(node);
}
uu_avl_walk_end(walk);
uu_avl_destroy(avl_tree);
uu_avl_pool_destroy(avl_pool);
return (ret);
}
/*
* list [-Hp][-r|-d max] [-o property[,...]] [-s property] ... [-S property]
* [-t type[,...]] [filesystem|volume|snapshot] ...
*
* -H Scripted mode; elide headers and separate columns by tabs
* -p Display values in parsable (literal) format.
* -r Recurse over all children
* -d Limit recursion by depth.
* -o Control which fields to display.
* -s Specify sort columns, descending order.
* -S Specify sort columns, ascending order.
* -t Control which object types to display.
*
* When given no arguments, list all filesystems in the system.
* Otherwise, list the specified datasets, optionally recursing down them if
* '-r' is specified.
*/
typedef struct list_cbdata {
boolean_t cb_first;
boolean_t cb_literal;
boolean_t cb_scripted;
zprop_list_t *cb_proplist;
} list_cbdata_t;
/*
* Given a list of columns to display, output appropriate headers for each one.
*/
static void
print_header(list_cbdata_t *cb)
{
zprop_list_t *pl = cb->cb_proplist;
char headerbuf[ZFS_MAXPROPLEN];
const char *header;
int i;
boolean_t first = B_TRUE;
boolean_t right_justify;
for (; pl != NULL; pl = pl->pl_next) {
if (!first) {
(void) printf(" ");
} else {
first = B_FALSE;
}
right_justify = B_FALSE;
if (pl->pl_prop != ZPROP_INVAL) {
header = zfs_prop_column_name(pl->pl_prop);
right_justify = zfs_prop_align_right(pl->pl_prop);
} else {
for (i = 0; pl->pl_user_prop[i] != '\0'; i++)
headerbuf[i] = toupper(pl->pl_user_prop[i]);
headerbuf[i] = '\0';
header = headerbuf;
}
if (pl->pl_next == NULL && !right_justify)
(void) printf("%s", header);
else if (right_justify)
(void) printf("%*s", (int)pl->pl_width, header);
else
(void) printf("%-*s", (int)pl->pl_width, header);
}
(void) printf("\n");
}
/*
* Given a dataset and a list of fields, print out all the properties according
* to the described layout.
*/
static void
print_dataset(zfs_handle_t *zhp, list_cbdata_t *cb)
{
zprop_list_t *pl = cb->cb_proplist;
boolean_t first = B_TRUE;
char property[ZFS_MAXPROPLEN];
nvlist_t *userprops = zfs_get_user_props(zhp);
nvlist_t *propval;
char *propstr;
boolean_t right_justify;
for (; pl != NULL; pl = pl->pl_next) {
if (!first) {
if (cb->cb_scripted)
(void) printf("\t");
else
(void) printf(" ");
} else {
first = B_FALSE;
}
if (pl->pl_prop == ZFS_PROP_NAME) {
(void) strlcpy(property, zfs_get_name(zhp),
sizeof (property));
propstr = property;
right_justify = zfs_prop_align_right(pl->pl_prop);
} else if (pl->pl_prop != ZPROP_INVAL) {
if (zfs_prop_get(zhp, pl->pl_prop, property,
sizeof (property), NULL, NULL, 0,
cb->cb_literal) != 0)
propstr = "-";
else
propstr = property;
right_justify = zfs_prop_align_right(pl->pl_prop);
} else if (zfs_prop_userquota(pl->pl_user_prop)) {
if (zfs_prop_get_userquota(zhp, pl->pl_user_prop,
property, sizeof (property), cb->cb_literal) != 0)
propstr = "-";
else
propstr = property;
right_justify = B_TRUE;
} else if (zfs_prop_written(pl->pl_user_prop)) {
if (zfs_prop_get_written(zhp, pl->pl_user_prop,
property, sizeof (property), cb->cb_literal) != 0)
propstr = "-";
else
propstr = property;
right_justify = B_TRUE;
} else {
if (nvlist_lookup_nvlist(userprops,
pl->pl_user_prop, &propval) != 0)
propstr = "-";
else
verify(nvlist_lookup_string(propval,
ZPROP_VALUE, &propstr) == 0);
right_justify = B_FALSE;
}
/*
* If this is being called in scripted mode, or if this is the
* last column and it is left-justified, don't include a width
* format specifier.
*/
if (cb->cb_scripted || (pl->pl_next == NULL && !right_justify))
(void) printf("%s", propstr);
else if (right_justify)
(void) printf("%*s", (int)pl->pl_width, propstr);
else
(void) printf("%-*s", (int)pl->pl_width, propstr);
}
(void) printf("\n");
}
/*
* Generic callback function to list a dataset or snapshot.
*/
static int
list_callback(zfs_handle_t *zhp, void *data)
{
list_cbdata_t *cbp = data;
if (cbp->cb_first) {
if (!cbp->cb_scripted)
print_header(cbp);
cbp->cb_first = B_FALSE;
}
print_dataset(zhp, cbp);
return (0);
}
static int
zfs_do_list(int argc, char **argv)
{
int c;
char default_fields[] =
"name,used,available,referenced,mountpoint";
int types = ZFS_TYPE_DATASET;
boolean_t types_specified = B_FALSE;
char *fields = default_fields;
list_cbdata_t cb = { 0 };
int limit = 0;
int ret = 0;
zfs_sort_column_t *sortcol = NULL;
int flags = ZFS_ITER_PROP_LISTSNAPS | ZFS_ITER_ARGS_CAN_BE_PATHS;
/* check options */
while ((c = getopt(argc, argv, "HS:d:o:prs:t:")) != -1) {
switch (c) {
case 'o':
fields = optarg;
break;
case 'p':
cb.cb_literal = B_TRUE;
flags |= ZFS_ITER_LITERAL_PROPS;
break;
case 'd':
limit = parse_depth(optarg, &flags);
break;
case 'r':
flags |= ZFS_ITER_RECURSE;
break;
case 'H':
cb.cb_scripted = B_TRUE;
break;
case 's':
if (zfs_add_sort_column(&sortcol, optarg,
B_FALSE) != 0) {
(void) fprintf(stderr,
gettext("invalid property '%s'\n"), optarg);
usage(B_FALSE);
}
break;
case 'S':
if (zfs_add_sort_column(&sortcol, optarg,
B_TRUE) != 0) {
(void) fprintf(stderr,
gettext("invalid property '%s'\n"), optarg);
usage(B_FALSE);
}
break;
case 't':
types = 0;
types_specified = B_TRUE;
flags &= ~ZFS_ITER_PROP_LISTSNAPS;
for (char *tok; (tok = strsep(&optarg, ",")); ) {
static const char *const type_subopts[] = {
"filesystem", "volume",
"snapshot", "snap",
"bookmark",
"all" };
static const int type_types[] = {
ZFS_TYPE_FILESYSTEM, ZFS_TYPE_VOLUME,
ZFS_TYPE_SNAPSHOT, ZFS_TYPE_SNAPSHOT,
ZFS_TYPE_BOOKMARK,
ZFS_TYPE_DATASET | ZFS_TYPE_BOOKMARK };
for (c = 0; c < ARRAY_SIZE(type_subopts); ++c)
if (strcmp(tok, type_subopts[c]) == 0) {
types |= type_types[c];
goto found3;
}
(void) fprintf(stderr,
gettext("invalid type '%s'\n"), tok);
usage(B_FALSE);
found3:;
}
break;
case ':':
(void) fprintf(stderr, gettext("missing argument for "
"'%c' option\n"), optopt);
usage(B_FALSE);
break;
case '?':
(void) fprintf(stderr, gettext("invalid option '%c'\n"),
optopt);
usage(B_FALSE);
}
}
argc -= optind;
argv += optind;
/*
* If we are only going to list snapshot names and sort by name,
* then we can use faster version.
*/
if (strcmp(fields, "name") == 0 && zfs_sort_only_by_name(sortcol))
flags |= ZFS_ITER_SIMPLE;
/*
* If "-o space" and no types were specified, don't display snapshots.
*/
if (strcmp(fields, "space") == 0 && types_specified == B_FALSE)
types &= ~ZFS_TYPE_SNAPSHOT;
/*
* Handle users who want to list all snapshots or bookmarks
* of the current dataset (ex. 'zfs list -t snapshot <dataset>').
*/
if ((types == ZFS_TYPE_SNAPSHOT || types == ZFS_TYPE_BOOKMARK) &&
argc > 0 && (flags & ZFS_ITER_RECURSE) == 0 && limit == 0) {
flags |= (ZFS_ITER_DEPTH_LIMIT | ZFS_ITER_RECURSE);
limit = 1;
}
/*
* If the user specifies '-o all', the zprop_get_list() doesn't
* normally include the name of the dataset. For 'zfs list', we always
* want this property to be first.
*/
if (zprop_get_list(g_zfs, fields, &cb.cb_proplist, ZFS_TYPE_DATASET)
!= 0)
usage(B_FALSE);
cb.cb_first = B_TRUE;
ret = zfs_for_each(argc, argv, flags, types, sortcol, &cb.cb_proplist,
limit, list_callback, &cb);
zprop_free_list(cb.cb_proplist);
zfs_free_sort_columns(sortcol);
if (ret == 0 && cb.cb_first && !cb.cb_scripted)
(void) fprintf(stderr, gettext("no datasets available\n"));
return (ret);
}
/*
* zfs rename [-fu] <fs | snap | vol> <fs | snap | vol>
* zfs rename [-f] -p <fs | vol> <fs | vol>
* zfs rename [-u] -r <snap> <snap>
*
* Renames the given dataset to another of the same type.
*
* The '-p' flag creates all the non-existing ancestors of the target first.
* The '-u' flag prevents file systems from being remounted during rename.
*/
static int
zfs_do_rename(int argc, char **argv)
{
zfs_handle_t *zhp;
renameflags_t flags = { 0 };
int c;
int ret = 0;
int types;
boolean_t parents = B_FALSE;
/* check options */
while ((c = getopt(argc, argv, "pruf")) != -1) {
switch (c) {
case 'p':
parents = B_TRUE;
break;
case 'r':
flags.recursive = B_TRUE;
break;
case 'u':
flags.nounmount = B_TRUE;
break;
case 'f':
flags.forceunmount = B_TRUE;
break;
case '?':
default:
(void) fprintf(stderr, gettext("invalid option '%c'\n"),
optopt);
usage(B_FALSE);
}
}
argc -= optind;
argv += optind;
/* check number of arguments */
if (argc < 1) {
(void) fprintf(stderr, gettext("missing source dataset "
"argument\n"));
usage(B_FALSE);
}
if (argc < 2) {
(void) fprintf(stderr, gettext("missing target dataset "
"argument\n"));
usage(B_FALSE);
}
if (argc > 2) {
(void) fprintf(stderr, gettext("too many arguments\n"));
usage(B_FALSE);
}
if (flags.recursive && parents) {
(void) fprintf(stderr, gettext("-p and -r options are mutually "
"exclusive\n"));
usage(B_FALSE);
}
if (flags.nounmount && parents) {
(void) fprintf(stderr, gettext("-u and -p options are mutually "
"exclusive\n"));
usage(B_FALSE);
}
if (flags.recursive && strchr(argv[0], '@') == 0) {
(void) fprintf(stderr, gettext("source dataset for recursive "
"rename must be a snapshot\n"));
usage(B_FALSE);
}
if (flags.nounmount)
types = ZFS_TYPE_FILESYSTEM;
else if (parents)
types = ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME;
else
types = ZFS_TYPE_DATASET;
if ((zhp = zfs_open(g_zfs, argv[0], types)) == NULL)
return (1);
/* If we were asked and the name looks good, try to create ancestors. */
if (parents && zfs_name_valid(argv[1], zfs_get_type(zhp)) &&
zfs_create_ancestors(g_zfs, argv[1]) != 0) {
zfs_close(zhp);
return (1);
}
ret = (zfs_rename(zhp, argv[1], flags) != 0);
zfs_close(zhp);
return (ret);
}
/*
* zfs promote <fs>
*
* Promotes the given clone fs to be the parent
*/
static int
zfs_do_promote(int argc, char **argv)
{
zfs_handle_t *zhp;
int ret = 0;
/* check options */
if (argc > 1 && argv[1][0] == '-') {
(void) fprintf(stderr, gettext("invalid option '%c'\n"),
argv[1][1]);
usage(B_FALSE);
}
/* check number of arguments */
if (argc < 2) {
(void) fprintf(stderr, gettext("missing clone filesystem"
" argument\n"));
usage(B_FALSE);
}
if (argc > 2) {
(void) fprintf(stderr, gettext("too many arguments\n"));
usage(B_FALSE);
}
zhp = zfs_open(g_zfs, argv[1], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
if (zhp == NULL)
return (1);
ret = (zfs_promote(zhp) != 0);
zfs_close(zhp);
return (ret);
}
static int
zfs_do_redact(int argc, char **argv)
{
char *snap = NULL;
char *bookname = NULL;
char **rsnaps = NULL;
int numrsnaps = 0;
argv++;
argc--;
if (argc < 3) {
(void) fprintf(stderr, gettext("too few arguments\n"));
usage(B_FALSE);
}
snap = argv[0];
bookname = argv[1];
rsnaps = argv + 2;
numrsnaps = argc - 2;
nvlist_t *rsnapnv = fnvlist_alloc();
for (int i = 0; i < numrsnaps; i++) {
fnvlist_add_boolean(rsnapnv, rsnaps[i]);
}
int err = lzc_redact(snap, bookname, rsnapnv);
fnvlist_free(rsnapnv);
switch (err) {
case 0:
break;
case ENOENT:
(void) fprintf(stderr,
gettext("provided snapshot %s does not exist\n"), snap);
break;
case EEXIST:
(void) fprintf(stderr, gettext("specified redaction bookmark "
"(%s) provided already exists\n"), bookname);
break;
case ENAMETOOLONG:
(void) fprintf(stderr, gettext("provided bookmark name cannot "
"be used, final name would be too long\n"));
break;
case E2BIG:
(void) fprintf(stderr, gettext("too many redaction snapshots "
"specified\n"));
break;
case EINVAL:
if (strchr(bookname, '#') != NULL)
(void) fprintf(stderr, gettext(
"redaction bookmark name must not contain '#'\n"));
else
(void) fprintf(stderr, gettext(
"redaction snapshot must be descendent of "
"snapshot being redacted\n"));
break;
case EALREADY:
(void) fprintf(stderr, gettext("attempted to redact redacted "
"dataset or with respect to redacted dataset\n"));
break;
case ENOTSUP:
(void) fprintf(stderr, gettext("redaction bookmarks feature "
"not enabled\n"));
break;
case EXDEV:
(void) fprintf(stderr, gettext("potentially invalid redaction "
"snapshot; full dataset names required\n"));
break;
default:
(void) fprintf(stderr, gettext("internal error: %s\n"),
strerror(errno));
}
return (err);
}
/*
* zfs rollback [-rRf] <snapshot>
*
* -r Delete any intervening snapshots before doing rollback
* -R Delete any snapshots and their clones
* -f ignored for backwards compatibility
*
* Given a filesystem, rollback to a specific snapshot, discarding any changes
* since then and making it the active dataset. If more recent snapshots exist,
* the command will complain unless the '-r' flag is given.
*/
typedef struct rollback_cbdata {
uint64_t cb_create;
uint8_t cb_younger_ds_printed;
boolean_t cb_first;
int cb_doclones;
char *cb_target;
int cb_error;
boolean_t cb_recurse;
} rollback_cbdata_t;
static int
rollback_check_dependent(zfs_handle_t *zhp, void *data)
{
rollback_cbdata_t *cbp = data;
if (cbp->cb_first && cbp->cb_recurse) {
(void) fprintf(stderr, gettext("cannot rollback to "
"'%s': clones of previous snapshots exist\n"),
cbp->cb_target);
(void) fprintf(stderr, gettext("use '-R' to "
"force deletion of the following clones and "
"dependents:\n"));
cbp->cb_first = 0;
cbp->cb_error = 1;
}
(void) fprintf(stderr, "%s\n", zfs_get_name(zhp));
zfs_close(zhp);
return (0);
}
/*
* Report some snapshots/bookmarks more recent than the one specified.
* Used when '-r' is not specified. We reuse this same callback for the
* snapshot dependents - if 'cb_dependent' is set, then this is a
* dependent and we should report it without checking the transaction group.
*/
static int
rollback_check(zfs_handle_t *zhp, void *data)
{
rollback_cbdata_t *cbp = data;
/*
* Max number of younger snapshots and/or bookmarks to display before
* we stop the iteration.
*/
const uint8_t max_younger = 32;
if (cbp->cb_doclones) {
zfs_close(zhp);
return (0);
}
if (zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG) > cbp->cb_create) {
if (cbp->cb_first && !cbp->cb_recurse) {
(void) fprintf(stderr, gettext("cannot "
"rollback to '%s': more recent snapshots "
"or bookmarks exist\n"),
cbp->cb_target);
(void) fprintf(stderr, gettext("use '-r' to "
"force deletion of the following "
"snapshots and bookmarks:\n"));
cbp->cb_first = 0;
cbp->cb_error = 1;
}
if (cbp->cb_recurse) {
if (zfs_iter_dependents(zhp, B_TRUE,
rollback_check_dependent, cbp) != 0) {
zfs_close(zhp);
return (-1);
}
} else {
(void) fprintf(stderr, "%s\n",
zfs_get_name(zhp));
cbp->cb_younger_ds_printed++;
}
}
zfs_close(zhp);
if (cbp->cb_younger_ds_printed == max_younger) {
/*
* This non-recursive rollback is going to fail due to the
* presence of snapshots and/or bookmarks that are younger than
* the rollback target.
* We printed some of the offending objects, now we stop
* zfs_iter_snapshot/bookmark iteration so we can fail fast and
* avoid iterating over the rest of the younger objects
*/
(void) fprintf(stderr, gettext("Output limited to %d "
"snapshots/bookmarks\n"), max_younger);
return (-1);
}
return (0);
}
static int
zfs_do_rollback(int argc, char **argv)
{
int ret = 0;
int c;
boolean_t force = B_FALSE;
rollback_cbdata_t cb = { 0 };
zfs_handle_t *zhp, *snap;
char parentname[ZFS_MAX_DATASET_NAME_LEN];
char *delim;
uint64_t min_txg = 0;
/* check options */
while ((c = getopt(argc, argv, "rRf")) != -1) {
switch (c) {
case 'r':
cb.cb_recurse = 1;
break;
case 'R':
cb.cb_recurse = 1;
cb.cb_doclones = 1;
break;
case 'f':
force = B_TRUE;
break;
case '?':
(void) fprintf(stderr, gettext("invalid option '%c'\n"),
optopt);
usage(B_FALSE);
}
}
argc -= optind;
argv += optind;
/* check number of arguments */
if (argc < 1) {
(void) fprintf(stderr, gettext("missing dataset argument\n"));
usage(B_FALSE);
}
if (argc > 1) {
(void) fprintf(stderr, gettext("too many arguments\n"));
usage(B_FALSE);
}
/* open the snapshot */
if ((snap = zfs_open(g_zfs, argv[0], ZFS_TYPE_SNAPSHOT)) == NULL)
return (1);
/* open the parent dataset */
(void) strlcpy(parentname, argv[0], sizeof (parentname));
verify((delim = strrchr(parentname, '@')) != NULL);
*delim = '\0';
if ((zhp = zfs_open(g_zfs, parentname, ZFS_TYPE_DATASET)) == NULL) {
zfs_close(snap);
return (1);
}
/*
* Check for more recent snapshots and/or clones based on the presence
* of '-r' and '-R'.
*/
cb.cb_target = argv[0];
cb.cb_create = zfs_prop_get_int(snap, ZFS_PROP_CREATETXG);
cb.cb_first = B_TRUE;
cb.cb_error = 0;
if (cb.cb_create > 0)
min_txg = cb.cb_create;
if ((ret = zfs_iter_snapshots(zhp, B_FALSE, rollback_check, &cb,
min_txg, 0)) != 0)
goto out;
if ((ret = zfs_iter_bookmarks(zhp, rollback_check, &cb)) != 0)
goto out;
if ((ret = cb.cb_error) != 0)
goto out;
/*
* Rollback parent to the given snapshot.
*/
ret = zfs_rollback(zhp, snap, force);
out:
zfs_close(snap);
zfs_close(zhp);
if (ret == 0)
return (0);
else
return (1);
}
/*
* zfs set property=value ... { fs | snap | vol } ...
*
* Sets the given properties for all datasets specified on the command line.
*/
static int
set_callback(zfs_handle_t *zhp, void *data)
{
nvlist_t *props = data;
if (zfs_prop_set_list(zhp, props) != 0) {
switch (libzfs_errno(g_zfs)) {
case EZFS_MOUNTFAILED:
(void) fprintf(stderr, gettext("property may be set "
"but unable to remount filesystem\n"));
break;
case EZFS_SHARENFSFAILED:
(void) fprintf(stderr, gettext("property may be set "
"but unable to reshare filesystem\n"));
break;
}
return (1);
}
return (0);
}
static int
zfs_do_set(int argc, char **argv)
{
nvlist_t *props = NULL;
int ds_start = -1; /* argv idx of first dataset arg */
int ret = 0;
int i;
/* check for options */
if (argc > 1 && argv[1][0] == '-') {
(void) fprintf(stderr, gettext("invalid option '%c'\n"),
argv[1][1]);
usage(B_FALSE);
}
/* check number of arguments */
if (argc < 2) {
(void) fprintf(stderr, gettext("missing arguments\n"));
usage(B_FALSE);
}
if (argc < 3) {
if (strchr(argv[1], '=') == NULL) {
(void) fprintf(stderr, gettext("missing property=value "
"argument(s)\n"));
} else {
(void) fprintf(stderr, gettext("missing dataset "
"name(s)\n"));
}
usage(B_FALSE);
}
/* validate argument order: prop=val args followed by dataset args */
for (i = 1; i < argc; i++) {
if (strchr(argv[i], '=') != NULL) {
if (ds_start > 0) {
/* out-of-order prop=val argument */
(void) fprintf(stderr, gettext("invalid "
"argument order\n"));
usage(B_FALSE);
}
} else if (ds_start < 0) {
ds_start = i;
}
}
if (ds_start < 0) {
(void) fprintf(stderr, gettext("missing dataset name(s)\n"));
usage(B_FALSE);
}
/* Populate a list of property settings */
if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
nomem();
for (i = 1; i < ds_start; i++) {
if (!parseprop(props, argv[i])) {
ret = -1;
goto error;
}
}
ret = zfs_for_each(argc - ds_start, argv + ds_start, 0,
ZFS_TYPE_DATASET, NULL, NULL, 0, set_callback, props);
error:
nvlist_free(props);
return (ret);
}
typedef struct snap_cbdata {
nvlist_t *sd_nvl;
boolean_t sd_recursive;
const char *sd_snapname;
} snap_cbdata_t;
static int
zfs_snapshot_cb(zfs_handle_t *zhp, void *arg)
{
snap_cbdata_t *sd = arg;
char *name;
int rv = 0;
int error;
if (sd->sd_recursive &&
zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) != 0) {
zfs_close(zhp);
return (0);
}
error = asprintf(&name, "%s@%s", zfs_get_name(zhp), sd->sd_snapname);
if (error == -1)
nomem();
fnvlist_add_boolean(sd->sd_nvl, name);
free(name);
if (sd->sd_recursive)
rv = zfs_iter_filesystems(zhp, zfs_snapshot_cb, sd);
zfs_close(zhp);
return (rv);
}
/*
* zfs snapshot [-r] [-o prop=value] ... <fs@snap>
*
* Creates a snapshot with the given name. While functionally equivalent to
* 'zfs create', it is a separate command to differentiate intent.
*/
static int
zfs_do_snapshot(int argc, char **argv)
{
int ret = 0;
int c;
nvlist_t *props;
snap_cbdata_t sd = { 0 };
boolean_t multiple_snaps = B_FALSE;
if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
nomem();
if (nvlist_alloc(&sd.sd_nvl, NV_UNIQUE_NAME, 0) != 0)
nomem();
/* check options */
while ((c = getopt(argc, argv, "ro:")) != -1) {
switch (c) {
case 'o':
if (!parseprop(props, optarg)) {
nvlist_free(sd.sd_nvl);
nvlist_free(props);
return (1);
}
break;
case 'r':
sd.sd_recursive = B_TRUE;
multiple_snaps = B_TRUE;
break;
case '?':
(void) fprintf(stderr, gettext("invalid option '%c'\n"),
optopt);
goto usage;
}
}
argc -= optind;
argv += optind;
/* check number of arguments */
if (argc < 1) {
(void) fprintf(stderr, gettext("missing snapshot argument\n"));
goto usage;
}
if (argc > 1)
multiple_snaps = B_TRUE;
for (; argc > 0; argc--, argv++) {
char *atp;
zfs_handle_t *zhp;
atp = strchr(argv[0], '@');
if (atp == NULL)
goto usage;
*atp = '\0';
sd.sd_snapname = atp + 1;
zhp = zfs_open(g_zfs, argv[0],
ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
if (zhp == NULL)
goto usage;
if (zfs_snapshot_cb(zhp, &sd) != 0)
goto usage;
}
ret = zfs_snapshot_nvl(g_zfs, sd.sd_nvl, props);
nvlist_free(sd.sd_nvl);
nvlist_free(props);
if (ret != 0 && multiple_snaps)
(void) fprintf(stderr, gettext("no snapshots were created\n"));
return (ret != 0);
usage:
nvlist_free(sd.sd_nvl);
nvlist_free(props);
usage(B_FALSE);
return (-1);
}
typedef struct zfs_send_exclude_arg {
size_t count;
char **list;
} zfs_send_exclude_arg_t;
/*
* This function creates the zfs_send_exclude_arg_t
* object described above; it can be called multiple
* times, and the input can be comma-separated.
* This is NOT the most efficient data layout; however,
* I couldn't think of a non-pathological case where
* it should have more than a couple dozen instances
* of excludes. If that turns out to be used in
* practice, we might want to instead use a tree.
*/
static void
add_dataset_excludes(char *exclude, zfs_send_exclude_arg_t *context)
{
char *tok;
while ((tok = strsep(&exclude, ",")) != NULL) {
if (!zfs_name_valid(tok, ZFS_TYPE_DATASET) ||
strchr(tok, '/') == NULL) {
(void) fprintf(stderr, gettext("-X %s: "
"not a valid non-root dataset name.\n"), tok);
usage(B_FALSE);
}
context->list = safe_realloc(context->list,
(sizeof (char *)) * (context->count + 1));
context->list[context->count++] = tok;
}
}
static void
free_dataset_excludes(zfs_send_exclude_arg_t *exclude_list)
{
free(exclude_list->list);
}
/*
* This is the call back used by zfs_send to
* determine if a dataset should be skipped.
* As stated above, this is not the most efficient
* data structure to use, but as long as the
* number of excluded datasets is relatively
* small (a couple of dozen or so), it won't
* have a big impact on performance on modern
* processors. Since it's excluding hierarchies,
* we'd probably want to move to a more complex
* tree structure in that case.
*/
static boolean_t
zfs_do_send_exclude(zfs_handle_t *zhp, void *context)
{
zfs_send_exclude_arg_t *exclude = context;
const char *name = zfs_get_name(zhp);
for (size_t indx = 0; indx < exclude->count; indx++) {
char *exclude_name = exclude->list[indx];
size_t len = strlen(exclude_name);
/* If it's shorter, it can't possibly match */
if (strlen(name) < len)
continue;
if (strncmp(name, exclude_name, len) == 0 &&
(name[len] == '/' || name[len] == '\0' ||
name[len] == '@')) {
return (B_FALSE);
}
}
return (B_TRUE);
}
/*
* Send a backup stream to stdout.
*/
static int
zfs_do_send(int argc, char **argv)
{
char *fromname = NULL;
char *toname = NULL;
char *resume_token = NULL;
char *cp;
zfs_handle_t *zhp;
sendflags_t flags = { 0 };
int c, err;
nvlist_t *dbgnv = NULL;
char *redactbook = NULL;
zfs_send_exclude_arg_t exclude_context = { 0 };
struct option long_options[] = {
{"replicate", no_argument, NULL, 'R'},
{"skip-missing", no_argument, NULL, 's'},
{"redact", required_argument, NULL, 'd'},
{"props", no_argument, NULL, 'p'},
{"parsable", no_argument, NULL, 'P'},
{"dedup", no_argument, NULL, 'D'},
{"verbose", no_argument, NULL, 'v'},
{"dryrun", no_argument, NULL, 'n'},
{"large-block", no_argument, NULL, 'L'},
{"embed", no_argument, NULL, 'e'},
{"resume", required_argument, NULL, 't'},
{"compressed", no_argument, NULL, 'c'},
{"raw", no_argument, NULL, 'w'},
{"backup", no_argument, NULL, 'b'},
{"holds", no_argument, NULL, 'h'},
{"saved", no_argument, NULL, 'S'},
{"exclude", required_argument, NULL, 'X'},
{0, 0, 0, 0}
};
/* check options */
while ((c = getopt_long(argc, argv, ":i:I:RsDpvnPLeht:cwbd:SX:",
long_options, NULL)) != -1) {
switch (c) {
case 'X':
add_dataset_excludes(optarg, &exclude_context);
break;
case 'i':
if (fromname)
usage(B_FALSE);
fromname = optarg;
break;
case 'I':
if (fromname)
usage(B_FALSE);
fromname = optarg;
flags.doall = B_TRUE;
break;
case 'R':
flags.replicate = B_TRUE;
break;
case 's':
flags.skipmissing = B_TRUE;
break;
case 'd':
redactbook = optarg;
break;
case 'p':
flags.props = B_TRUE;
break;
case 'b':
flags.backup = B_TRUE;
break;
case 'h':
flags.holds = B_TRUE;
break;
case 'P':
flags.parsable = B_TRUE;
break;
case 'v':
flags.verbosity++;
flags.progress = B_TRUE;
break;
case 'D':
(void) fprintf(stderr,
gettext("WARNING: deduplicated send is no "
"longer supported. A regular,\n"
"non-deduplicated stream will be generated.\n\n"));
break;
case 'n':
flags.dryrun = B_TRUE;
break;
case 'L':
flags.largeblock = B_TRUE;
break;
case 'e':
flags.embed_data = B_TRUE;
break;
case 't':
resume_token = optarg;
break;
case 'c':
flags.compress = B_TRUE;
break;
case 'w':
flags.raw = B_TRUE;
flags.compress = B_TRUE;
flags.embed_data = B_TRUE;
flags.largeblock = B_TRUE;
break;
case 'S':
flags.saved = B_TRUE;
break;
case ':':
/*
* If a parameter was not passed, optopt contains the
* value that would normally lead us into the
* appropriate case statement. If it's > 256, then this
* must be a longopt and we should look at argv to get
* the string. Otherwise it's just the character, so we
* should use it directly.
*/
if (optopt <= UINT8_MAX) {
(void) fprintf(stderr,
gettext("missing argument for '%c' "
"option\n"), optopt);
} else {
(void) fprintf(stderr,
gettext("missing argument for '%s' "
"option\n"), argv[optind - 1]);
}
usage(B_FALSE);
break;
case '?':
default:
/*
* If an invalid flag was passed, optopt contains the
* character if it was a short flag, or 0 if it was a
* longopt.
*/
if (optopt != 0) {
(void) fprintf(stderr,
gettext("invalid option '%c'\n"), optopt);
} else {
(void) fprintf(stderr,
gettext("invalid option '%s'\n"),
argv[optind - 1]);
}
usage(B_FALSE);
}
}
if (flags.parsable && flags.verbosity == 0)
flags.verbosity = 1;
if (exclude_context.count > 0 && !flags.replicate) {
(void) fprintf(stderr, gettext("Cannot specify "
"dataset exclusion (-X) on a non-recursive "
"send.\n"));
return (1);
}
argc -= optind;
argv += optind;
if (resume_token != NULL) {
if (fromname != NULL || flags.replicate || flags.props ||
flags.backup || flags.holds ||
flags.saved || redactbook != NULL) {
(void) fprintf(stderr,
gettext("invalid flags combined with -t\n"));
usage(B_FALSE);
}
if (argc > 0) {
(void) fprintf(stderr, gettext("too many arguments\n"));
usage(B_FALSE);
}
} else {
if (argc < 1) {
(void) fprintf(stderr,
gettext("missing snapshot argument\n"));
usage(B_FALSE);
}
if (argc > 1) {
(void) fprintf(stderr, gettext("too many arguments\n"));
usage(B_FALSE);
}
}
if (flags.saved) {
if (fromname != NULL || flags.replicate || flags.props ||
flags.doall || flags.backup ||
flags.holds || flags.largeblock || flags.embed_data ||
flags.compress || flags.raw || redactbook != NULL) {
(void) fprintf(stderr, gettext("incompatible flags "
"combined with saved send flag\n"));
usage(B_FALSE);
}
if (strchr(argv[0], '@') != NULL) {
(void) fprintf(stderr, gettext("saved send must "
"specify the dataset with partially-received "
"state\n"));
usage(B_FALSE);
}
}
if (flags.raw && redactbook != NULL) {
(void) fprintf(stderr,
gettext("Error: raw sends may not be redacted.\n"));
return (1);
}
if (!flags.dryrun && isatty(STDOUT_FILENO)) {
(void) fprintf(stderr,
gettext("Error: Stream can not be written to a terminal.\n"
"You must redirect standard output.\n"));
return (1);
}
if (flags.saved) {
zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET);
if (zhp == NULL)
return (1);
err = zfs_send_saved(zhp, &flags, STDOUT_FILENO,
resume_token);
zfs_close(zhp);
return (err != 0);
} else if (resume_token != NULL) {
return (zfs_send_resume(g_zfs, &flags, STDOUT_FILENO,
resume_token));
}
if (flags.skipmissing && !flags.replicate) {
(void) fprintf(stderr,
gettext("skip-missing flag can only be used in "
"conjunction with replicate\n"));
usage(B_FALSE);
}
/*
* For everything except -R and -I, use the new, cleaner code path.
*/
if (!(flags.replicate || flags.doall)) {
char frombuf[ZFS_MAX_DATASET_NAME_LEN];
if (fromname != NULL && (strchr(fromname, '#') == NULL &&
strchr(fromname, '@') == NULL)) {
/*
* Neither bookmark or snapshot was specified. Print a
* warning, and assume snapshot.
*/
(void) fprintf(stderr, "Warning: incremental source "
"didn't specify type, assuming snapshot. Use '@' "
"or '#' prefix to avoid ambiguity.\n");
(void) snprintf(frombuf, sizeof (frombuf), "@%s",
fromname);
fromname = frombuf;
}
if (fromname != NULL &&
(fromname[0] == '#' || fromname[0] == '@')) {
/*
* Incremental source name begins with # or @.
* Default to same fs as target.
*/
char tmpbuf[ZFS_MAX_DATASET_NAME_LEN];
(void) strlcpy(tmpbuf, fromname, sizeof (tmpbuf));
(void) strlcpy(frombuf, argv[0], sizeof (frombuf));
cp = strchr(frombuf, '@');
if (cp != NULL)
*cp = '\0';
(void) strlcat(frombuf, tmpbuf, sizeof (frombuf));
fromname = frombuf;
}
zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_DATASET);
if (zhp == NULL)
return (1);
err = zfs_send_one(zhp, fromname, STDOUT_FILENO, &flags,
redactbook);
zfs_close(zhp);
return (err != 0);
}
if (fromname != NULL && strchr(fromname, '#')) {
(void) fprintf(stderr,
gettext("Error: multiple snapshots cannot be "
"sent from a bookmark.\n"));
return (1);
}
if (redactbook != NULL) {
(void) fprintf(stderr, gettext("Error: multiple snapshots "
"cannot be sent redacted.\n"));
return (1);
}
if ((cp = strchr(argv[0], '@')) == NULL) {
(void) fprintf(stderr, gettext("Error: "
"Unsupported flag with filesystem or bookmark.\n"));
return (1);
}
*cp = '\0';
toname = cp + 1;
zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
if (zhp == NULL)
return (1);
/*
* If they specified the full path to the snapshot, chop off
* everything except the short name of the snapshot, but special
* case if they specify the origin.
*/
if (fromname && (cp = strchr(fromname, '@')) != NULL) {
char origin[ZFS_MAX_DATASET_NAME_LEN];
zprop_source_t src;
(void) zfs_prop_get(zhp, ZFS_PROP_ORIGIN,
origin, sizeof (origin), &src, NULL, 0, B_FALSE);
if (strcmp(origin, fromname) == 0) {
fromname = NULL;
flags.fromorigin = B_TRUE;
} else {
*cp = '\0';
if (cp != fromname && strcmp(argv[0], fromname)) {
(void) fprintf(stderr,
gettext("incremental source must be "
"in same filesystem\n"));
usage(B_FALSE);
}
fromname = cp + 1;
if (strchr(fromname, '@') || strchr(fromname, '/')) {
(void) fprintf(stderr,
gettext("invalid incremental source\n"));
usage(B_FALSE);
}
}
}
if (flags.replicate && fromname == NULL)
flags.doall = B_TRUE;
err = zfs_send(zhp, fromname, toname, &flags, STDOUT_FILENO,
exclude_context.count > 0 ? zfs_do_send_exclude : NULL,
&exclude_context, flags.verbosity >= 3 ? &dbgnv : NULL);
free_dataset_excludes(&exclude_context);
if (flags.verbosity >= 3 && dbgnv != NULL) {
/*
* dump_nvlist prints to stdout, but that's been
* redirected to a file. Make it print to stderr
* instead.
*/
(void) dup2(STDERR_FILENO, STDOUT_FILENO);
dump_nvlist(dbgnv, 0);
nvlist_free(dbgnv);
}
zfs_close(zhp);
return (err != 0);
}
/*
* Restore a backup stream from stdin.
*/
static int
zfs_do_receive(int argc, char **argv)
{
int c, err = 0;
recvflags_t flags = { 0 };
boolean_t abort_resumable = B_FALSE;
nvlist_t *props;
if (nvlist_alloc(&props, NV_UNIQUE_NAME, 0) != 0)
nomem();
/* check options */
while ((c = getopt(argc, argv, ":o:x:dehMnuvFsA")) != -1) {
switch (c) {
case 'o':
if (!parseprop(props, optarg)) {
nvlist_free(props);
usage(B_FALSE);
}
break;
case 'x':
if (!parsepropname(props, optarg)) {
nvlist_free(props);
usage(B_FALSE);
}
break;
case 'd':
if (flags.istail) {
(void) fprintf(stderr, gettext("invalid option "
"combination: -d and -e are mutually "
"exclusive\n"));
usage(B_FALSE);
}
flags.isprefix = B_TRUE;
break;
case 'e':
if (flags.isprefix) {
(void) fprintf(stderr, gettext("invalid option "
"combination: -d and -e are mutually "
"exclusive\n"));
usage(B_FALSE);
}
flags.istail = B_TRUE;
break;
case 'h':
flags.skipholds = B_TRUE;
break;
case 'M':
flags.forceunmount = B_TRUE;
break;
case 'n':
flags.dryrun = B_TRUE;
break;
case 'u':
flags.nomount = B_TRUE;
break;
case 'v':
flags.verbose = B_TRUE;
break;
case 's':
flags.resumable = B_TRUE;
break;
case 'F':
flags.force = B_TRUE;
break;
case 'A':
abort_resumable = B_TRUE;
break;
case ':':
(void) fprintf(stderr, gettext("missing argument for "
"'%c' option\n"), optopt);
usage(B_FALSE);
break;
case '?':
(void) fprintf(stderr, gettext("invalid option '%c'\n"),
optopt);
usage(B_FALSE);
}
}
argc -= optind;
argv += optind;
/* zfs recv -e (use "tail" name) implies -d (remove dataset "head") */
if (flags.istail)
flags.isprefix = B_TRUE;
/* check number of arguments */
if (argc < 1) {
(void) fprintf(stderr, gettext("missing snapshot argument\n"));
usage(B_FALSE);
}
if (argc > 1) {
(void) fprintf(stderr, gettext("too many arguments\n"));
usage(B_FALSE);
}
if (abort_resumable) {
if (flags.isprefix || flags.istail || flags.dryrun ||
flags.resumable || flags.nomount) {
(void) fprintf(stderr, gettext("invalid option\n"));
usage(B_FALSE);
}
char namebuf[ZFS_MAX_DATASET_NAME_LEN];
(void) snprintf(namebuf, sizeof (namebuf),
"%s/%%recv", argv[0]);
if (zfs_dataset_exists(g_zfs, namebuf,
ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME)) {
zfs_handle_t *zhp = zfs_open(g_zfs,
namebuf, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
if (zhp == NULL) {
nvlist_free(props);
return (1);
}
err = zfs_destroy(zhp, B_FALSE);
zfs_close(zhp);
} else {
zfs_handle_t *zhp = zfs_open(g_zfs,
argv[0], ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
if (zhp == NULL)
usage(B_FALSE);
if (!zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) ||
zfs_prop_get(zhp, ZFS_PROP_RECEIVE_RESUME_TOKEN,
NULL, 0, NULL, NULL, 0, B_TRUE) == -1) {
(void) fprintf(stderr,
gettext("'%s' does not have any "
"resumable receive state to abort\n"),
argv[0]);
nvlist_free(props);
zfs_close(zhp);
return (1);
}
err = zfs_destroy(zhp, B_FALSE);
zfs_close(zhp);
}
nvlist_free(props);
return (err != 0);
}
if (isatty(STDIN_FILENO)) {
(void) fprintf(stderr,
gettext("Error: Backup stream can not be read "
"from a terminal.\n"
"You must redirect standard input.\n"));
nvlist_free(props);
return (1);
}
err = zfs_receive(g_zfs, argv[0], props, &flags, STDIN_FILENO, NULL);
nvlist_free(props);
return (err != 0);
}
/*
* allow/unallow stuff
*/
/* copied from zfs/sys/dsl_deleg.h */
#define ZFS_DELEG_PERM_CREATE "create"
#define ZFS_DELEG_PERM_DESTROY "destroy"
#define ZFS_DELEG_PERM_SNAPSHOT "snapshot"
#define ZFS_DELEG_PERM_ROLLBACK "rollback"
#define ZFS_DELEG_PERM_CLONE "clone"
#define ZFS_DELEG_PERM_PROMOTE "promote"
#define ZFS_DELEG_PERM_RENAME "rename"
#define ZFS_DELEG_PERM_MOUNT "mount"
#define ZFS_DELEG_PERM_SHARE "share"
#define ZFS_DELEG_PERM_SEND "send"
#define ZFS_DELEG_PERM_RECEIVE "receive"
#define ZFS_DELEG_PERM_ALLOW "allow"
#define ZFS_DELEG_PERM_USERPROP "userprop"
#define ZFS_DELEG_PERM_VSCAN "vscan" /* ??? */
#define ZFS_DELEG_PERM_USERQUOTA "userquota"
#define ZFS_DELEG_PERM_GROUPQUOTA "groupquota"
#define ZFS_DELEG_PERM_USERUSED "userused"
#define ZFS_DELEG_PERM_GROUPUSED "groupused"
#define ZFS_DELEG_PERM_USEROBJQUOTA "userobjquota"
#define ZFS_DELEG_PERM_GROUPOBJQUOTA "groupobjquota"
#define ZFS_DELEG_PERM_USEROBJUSED "userobjused"
#define ZFS_DELEG_PERM_GROUPOBJUSED "groupobjused"
#define ZFS_DELEG_PERM_HOLD "hold"
#define ZFS_DELEG_PERM_RELEASE "release"
#define ZFS_DELEG_PERM_DIFF "diff"
#define ZFS_DELEG_PERM_BOOKMARK "bookmark"
#define ZFS_DELEG_PERM_LOAD_KEY "load-key"
#define ZFS_DELEG_PERM_CHANGE_KEY "change-key"
#define ZFS_DELEG_PERM_PROJECTUSED "projectused"
#define ZFS_DELEG_PERM_PROJECTQUOTA "projectquota"
#define ZFS_DELEG_PERM_PROJECTOBJUSED "projectobjused"
#define ZFS_DELEG_PERM_PROJECTOBJQUOTA "projectobjquota"
#define ZFS_NUM_DELEG_NOTES ZFS_DELEG_NOTE_NONE
static zfs_deleg_perm_tab_t zfs_deleg_perm_tbl[] = {
{ ZFS_DELEG_PERM_ALLOW, ZFS_DELEG_NOTE_ALLOW },
{ ZFS_DELEG_PERM_CLONE, ZFS_DELEG_NOTE_CLONE },
{ ZFS_DELEG_PERM_CREATE, ZFS_DELEG_NOTE_CREATE },
{ ZFS_DELEG_PERM_DESTROY, ZFS_DELEG_NOTE_DESTROY },
{ ZFS_DELEG_PERM_DIFF, ZFS_DELEG_NOTE_DIFF},
{ ZFS_DELEG_PERM_HOLD, ZFS_DELEG_NOTE_HOLD },
{ ZFS_DELEG_PERM_MOUNT, ZFS_DELEG_NOTE_MOUNT },
{ ZFS_DELEG_PERM_PROMOTE, ZFS_DELEG_NOTE_PROMOTE },
{ ZFS_DELEG_PERM_RECEIVE, ZFS_DELEG_NOTE_RECEIVE },
{ ZFS_DELEG_PERM_RELEASE, ZFS_DELEG_NOTE_RELEASE },
{ ZFS_DELEG_PERM_RENAME, ZFS_DELEG_NOTE_RENAME },
{ ZFS_DELEG_PERM_ROLLBACK, ZFS_DELEG_NOTE_ROLLBACK },
{ ZFS_DELEG_PERM_SEND, ZFS_DELEG_NOTE_SEND },
{ ZFS_DELEG_PERM_SHARE, ZFS_DELEG_NOTE_SHARE },
{ ZFS_DELEG_PERM_SNAPSHOT, ZFS_DELEG_NOTE_SNAPSHOT },
{ ZFS_DELEG_PERM_BOOKMARK, ZFS_DELEG_NOTE_BOOKMARK },
{ ZFS_DELEG_PERM_LOAD_KEY, ZFS_DELEG_NOTE_LOAD_KEY },
{ ZFS_DELEG_PERM_CHANGE_KEY, ZFS_DELEG_NOTE_CHANGE_KEY },
{ ZFS_DELEG_PERM_GROUPQUOTA, ZFS_DELEG_NOTE_GROUPQUOTA },
{ ZFS_DELEG_PERM_GROUPUSED, ZFS_DELEG_NOTE_GROUPUSED },
{ ZFS_DELEG_PERM_USERPROP, ZFS_DELEG_NOTE_USERPROP },
{ ZFS_DELEG_PERM_USERQUOTA, ZFS_DELEG_NOTE_USERQUOTA },
{ ZFS_DELEG_PERM_USERUSED, ZFS_DELEG_NOTE_USERUSED },
{ ZFS_DELEG_PERM_USEROBJQUOTA, ZFS_DELEG_NOTE_USEROBJQUOTA },
{ ZFS_DELEG_PERM_USEROBJUSED, ZFS_DELEG_NOTE_USEROBJUSED },
{ ZFS_DELEG_PERM_GROUPOBJQUOTA, ZFS_DELEG_NOTE_GROUPOBJQUOTA },
{ ZFS_DELEG_PERM_GROUPOBJUSED, ZFS_DELEG_NOTE_GROUPOBJUSED },
{ ZFS_DELEG_PERM_PROJECTUSED, ZFS_DELEG_NOTE_PROJECTUSED },
{ ZFS_DELEG_PERM_PROJECTQUOTA, ZFS_DELEG_NOTE_PROJECTQUOTA },
{ ZFS_DELEG_PERM_PROJECTOBJUSED, ZFS_DELEG_NOTE_PROJECTOBJUSED },
{ ZFS_DELEG_PERM_PROJECTOBJQUOTA, ZFS_DELEG_NOTE_PROJECTOBJQUOTA },
{ NULL, ZFS_DELEG_NOTE_NONE }
};
/* permission structure */
typedef struct deleg_perm {
zfs_deleg_who_type_t dp_who_type;
const char *dp_name;
boolean_t dp_local;
boolean_t dp_descend;
} deleg_perm_t;
/* */
typedef struct deleg_perm_node {
deleg_perm_t dpn_perm;
uu_avl_node_t dpn_avl_node;
} deleg_perm_node_t;
typedef struct fs_perm fs_perm_t;
/* permissions set */
typedef struct who_perm {
zfs_deleg_who_type_t who_type;
const char *who_name; /* id */
char who_ug_name[256]; /* user/group name */
fs_perm_t *who_fsperm; /* uplink */
uu_avl_t *who_deleg_perm_avl; /* permissions */
} who_perm_t;
/* */
typedef struct who_perm_node {
who_perm_t who_perm;
uu_avl_node_t who_avl_node;
} who_perm_node_t;
typedef struct fs_perm_set fs_perm_set_t;
/* fs permissions */
struct fs_perm {
const char *fsp_name;
uu_avl_t *fsp_sc_avl; /* sets,create */
uu_avl_t *fsp_uge_avl; /* user,group,everyone */
fs_perm_set_t *fsp_set; /* uplink */
};
/* */
typedef struct fs_perm_node {
fs_perm_t fspn_fsperm;
uu_avl_t *fspn_avl;
uu_list_node_t fspn_list_node;
} fs_perm_node_t;
/* top level structure */
struct fs_perm_set {
uu_list_pool_t *fsps_list_pool;
uu_list_t *fsps_list; /* list of fs_perms */
uu_avl_pool_t *fsps_named_set_avl_pool;
uu_avl_pool_t *fsps_who_perm_avl_pool;
uu_avl_pool_t *fsps_deleg_perm_avl_pool;
};
static inline const char *
deleg_perm_type(zfs_deleg_note_t note)
{
/* subcommands */
switch (note) {
/* SUBCOMMANDS */
/* OTHER */
case ZFS_DELEG_NOTE_GROUPQUOTA:
case ZFS_DELEG_NOTE_GROUPUSED:
case ZFS_DELEG_NOTE_USERPROP:
case ZFS_DELEG_NOTE_USERQUOTA:
case ZFS_DELEG_NOTE_USERUSED:
case ZFS_DELEG_NOTE_USEROBJQUOTA:
case ZFS_DELEG_NOTE_USEROBJUSED:
case ZFS_DELEG_NOTE_GROUPOBJQUOTA:
case ZFS_DELEG_NOTE_GROUPOBJUSED:
case ZFS_DELEG_NOTE_PROJECTUSED:
case ZFS_DELEG_NOTE_PROJECTQUOTA:
case ZFS_DELEG_NOTE_PROJECTOBJUSED:
case ZFS_DELEG_NOTE_PROJECTOBJQUOTA:
/* other */
return (gettext("other"));
default:
return (gettext("subcommand"));
}
}
static int
who_type2weight(zfs_deleg_who_type_t who_type)
{
int res;
switch (who_type) {
case ZFS_DELEG_NAMED_SET_SETS:
case ZFS_DELEG_NAMED_SET:
res = 0;
break;
case ZFS_DELEG_CREATE_SETS:
case ZFS_DELEG_CREATE:
res = 1;
break;
case ZFS_DELEG_USER_SETS:
case ZFS_DELEG_USER:
res = 2;
break;
case ZFS_DELEG_GROUP_SETS:
case ZFS_DELEG_GROUP:
res = 3;
break;
case ZFS_DELEG_EVERYONE_SETS:
case ZFS_DELEG_EVERYONE:
res = 4;
break;
default:
res = -1;
}
return (res);
}
static int
who_perm_compare(const void *larg, const void *rarg, void *unused)
{
(void) unused;
const who_perm_node_t *l = larg;
const who_perm_node_t *r = rarg;
zfs_deleg_who_type_t ltype = l->who_perm.who_type;
zfs_deleg_who_type_t rtype = r->who_perm.who_type;
int lweight = who_type2weight(ltype);
int rweight = who_type2weight(rtype);
int res = lweight - rweight;
if (res == 0)
res = strncmp(l->who_perm.who_name, r->who_perm.who_name,
ZFS_MAX_DELEG_NAME-1);
if (res == 0)
return (0);
if (res > 0)
return (1);
else
return (-1);
}
static int
deleg_perm_compare(const void *larg, const void *rarg, void *unused)
{
(void) unused;
const deleg_perm_node_t *l = larg;
const deleg_perm_node_t *r = rarg;
int res = strncmp(l->dpn_perm.dp_name, r->dpn_perm.dp_name,
ZFS_MAX_DELEG_NAME-1);
if (res == 0)
return (0);
if (res > 0)
return (1);
else
return (-1);
}
static inline void
fs_perm_set_init(fs_perm_set_t *fspset)
{
memset(fspset, 0, sizeof (fs_perm_set_t));
if ((fspset->fsps_list_pool = uu_list_pool_create("fsps_list_pool",
sizeof (fs_perm_node_t), offsetof(fs_perm_node_t, fspn_list_node),
NULL, UU_DEFAULT)) == NULL)
nomem();
if ((fspset->fsps_list = uu_list_create(fspset->fsps_list_pool, NULL,
UU_DEFAULT)) == NULL)
nomem();
if ((fspset->fsps_named_set_avl_pool = uu_avl_pool_create(
"named_set_avl_pool", sizeof (who_perm_node_t), offsetof(
who_perm_node_t, who_avl_node), who_perm_compare,
UU_DEFAULT)) == NULL)
nomem();
if ((fspset->fsps_who_perm_avl_pool = uu_avl_pool_create(
"who_perm_avl_pool", sizeof (who_perm_node_t), offsetof(
who_perm_node_t, who_avl_node), who_perm_compare,
UU_DEFAULT)) == NULL)
nomem();
if ((fspset->fsps_deleg_perm_avl_pool = uu_avl_pool_create(
"deleg_perm_avl_pool", sizeof (deleg_perm_node_t), offsetof(
deleg_perm_node_t, dpn_avl_node), deleg_perm_compare, UU_DEFAULT))
== NULL)
nomem();
}
static inline void fs_perm_fini(fs_perm_t *);
static inline void who_perm_fini(who_perm_t *);
static inline void
fs_perm_set_fini(fs_perm_set_t *fspset)
{
fs_perm_node_t *node = uu_list_first(fspset->fsps_list);
while (node != NULL) {
fs_perm_node_t *next_node =
uu_list_next(fspset->fsps_list, node);
fs_perm_t *fsperm = &node->fspn_fsperm;
fs_perm_fini(fsperm);
uu_list_remove(fspset->fsps_list, node);
free(node);
node = next_node;
}
uu_avl_pool_destroy(fspset->fsps_named_set_avl_pool);
uu_avl_pool_destroy(fspset->fsps_who_perm_avl_pool);
uu_avl_pool_destroy(fspset->fsps_deleg_perm_avl_pool);
}
static inline void
deleg_perm_init(deleg_perm_t *deleg_perm, zfs_deleg_who_type_t type,
const char *name)
{
deleg_perm->dp_who_type = type;
deleg_perm->dp_name = name;
}
static inline void
who_perm_init(who_perm_t *who_perm, fs_perm_t *fsperm,
zfs_deleg_who_type_t type, const char *name)
{
uu_avl_pool_t *pool;
pool = fsperm->fsp_set->fsps_deleg_perm_avl_pool;
memset(who_perm, 0, sizeof (who_perm_t));
if ((who_perm->who_deleg_perm_avl = uu_avl_create(pool, NULL,
UU_DEFAULT)) == NULL)
nomem();
who_perm->who_type = type;
who_perm->who_name = name;
who_perm->who_fsperm = fsperm;
}
static inline void
who_perm_fini(who_perm_t *who_perm)
{
deleg_perm_node_t *node = uu_avl_first(who_perm->who_deleg_perm_avl);
while (node != NULL) {
deleg_perm_node_t *next_node =
uu_avl_next(who_perm->who_deleg_perm_avl, node);
uu_avl_remove(who_perm->who_deleg_perm_avl, node);
free(node);
node = next_node;
}
uu_avl_destroy(who_perm->who_deleg_perm_avl);
}
static inline void
fs_perm_init(fs_perm_t *fsperm, fs_perm_set_t *fspset, const char *fsname)
{
uu_avl_pool_t *nset_pool = fspset->fsps_named_set_avl_pool;
uu_avl_pool_t *who_pool = fspset->fsps_who_perm_avl_pool;
memset(fsperm, 0, sizeof (fs_perm_t));
if ((fsperm->fsp_sc_avl = uu_avl_create(nset_pool, NULL, UU_DEFAULT))
== NULL)
nomem();
if ((fsperm->fsp_uge_avl = uu_avl_create(who_pool, NULL, UU_DEFAULT))
== NULL)
nomem();
fsperm->fsp_set = fspset;
fsperm->fsp_name = fsname;
}
static inline void
fs_perm_fini(fs_perm_t *fsperm)
{
who_perm_node_t *node = uu_avl_first(fsperm->fsp_sc_avl);
while (node != NULL) {
who_perm_node_t *next_node = uu_avl_next(fsperm->fsp_sc_avl,
node);
who_perm_t *who_perm = &node->who_perm;
who_perm_fini(who_perm);
uu_avl_remove(fsperm->fsp_sc_avl, node);
free(node);
node = next_node;
}
node = uu_avl_first(fsperm->fsp_uge_avl);
while (node != NULL) {
who_perm_node_t *next_node = uu_avl_next(fsperm->fsp_uge_avl,
node);
who_perm_t *who_perm = &node->who_perm;
who_perm_fini(who_perm);
uu_avl_remove(fsperm->fsp_uge_avl, node);
free(node);
node = next_node;
}
uu_avl_destroy(fsperm->fsp_sc_avl);
uu_avl_destroy(fsperm->fsp_uge_avl);
}
static void
set_deleg_perm_node(uu_avl_t *avl, deleg_perm_node_t *node,
zfs_deleg_who_type_t who_type, const char *name, char locality)
{
uu_avl_index_t idx = 0;
deleg_perm_node_t *found_node = NULL;
deleg_perm_t *deleg_perm = &node->dpn_perm;
deleg_perm_init(deleg_perm, who_type, name);
if ((found_node = uu_avl_find(avl, node, NULL, &idx))
== NULL)
uu_avl_insert(avl, node, idx);
else {
node = found_node;
deleg_perm = &node->dpn_perm;
}
switch (locality) {
case ZFS_DELEG_LOCAL:
deleg_perm->dp_local = B_TRUE;
break;
case ZFS_DELEG_DESCENDENT:
deleg_perm->dp_descend = B_TRUE;
break;
case ZFS_DELEG_NA:
break;
default:
assert(B_FALSE); /* invalid locality */
}
}
static inline int
parse_who_perm(who_perm_t *who_perm, nvlist_t *nvl, char locality)
{
nvpair_t *nvp = NULL;
fs_perm_set_t *fspset = who_perm->who_fsperm->fsp_set;
uu_avl_t *avl = who_perm->who_deleg_perm_avl;
zfs_deleg_who_type_t who_type = who_perm->who_type;
while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
const char *name = nvpair_name(nvp);
data_type_t type = nvpair_type(nvp);
uu_avl_pool_t *avl_pool = fspset->fsps_deleg_perm_avl_pool;
deleg_perm_node_t *node =
safe_malloc(sizeof (deleg_perm_node_t));
VERIFY(type == DATA_TYPE_BOOLEAN);
uu_avl_node_init(node, &node->dpn_avl_node, avl_pool);
set_deleg_perm_node(avl, node, who_type, name, locality);
}
return (0);
}
static inline int
parse_fs_perm(fs_perm_t *fsperm, nvlist_t *nvl)
{
nvpair_t *nvp = NULL;
fs_perm_set_t *fspset = fsperm->fsp_set;
while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
nvlist_t *nvl2 = NULL;
const char *name = nvpair_name(nvp);
uu_avl_t *avl = NULL;
uu_avl_pool_t *avl_pool = NULL;
zfs_deleg_who_type_t perm_type = name[0];
char perm_locality = name[1];
const char *perm_name = name + 3;
who_perm_t *who_perm = NULL;
assert('$' == name[2]);
if (nvpair_value_nvlist(nvp, &nvl2) != 0)
return (-1);
switch (perm_type) {
case ZFS_DELEG_CREATE:
case ZFS_DELEG_CREATE_SETS:
case ZFS_DELEG_NAMED_SET:
case ZFS_DELEG_NAMED_SET_SETS:
avl_pool = fspset->fsps_named_set_avl_pool;
avl = fsperm->fsp_sc_avl;
break;
case ZFS_DELEG_USER:
case ZFS_DELEG_USER_SETS:
case ZFS_DELEG_GROUP:
case ZFS_DELEG_GROUP_SETS:
case ZFS_DELEG_EVERYONE:
case ZFS_DELEG_EVERYONE_SETS:
avl_pool = fspset->fsps_who_perm_avl_pool;
avl = fsperm->fsp_uge_avl;
break;
default:
assert(!"unhandled zfs_deleg_who_type_t");
}
who_perm_node_t *found_node = NULL;
who_perm_node_t *node = safe_malloc(
sizeof (who_perm_node_t));
who_perm = &node->who_perm;
uu_avl_index_t idx = 0;
uu_avl_node_init(node, &node->who_avl_node, avl_pool);
who_perm_init(who_perm, fsperm, perm_type, perm_name);
if ((found_node = uu_avl_find(avl, node, NULL, &idx))
== NULL) {
if (avl == fsperm->fsp_uge_avl) {
uid_t rid = 0;
struct passwd *p = NULL;
struct group *g = NULL;
const char *nice_name = NULL;
switch (perm_type) {
case ZFS_DELEG_USER_SETS:
case ZFS_DELEG_USER:
rid = atoi(perm_name);
p = getpwuid(rid);
if (p)
nice_name = p->pw_name;
break;
case ZFS_DELEG_GROUP_SETS:
case ZFS_DELEG_GROUP:
rid = atoi(perm_name);
g = getgrgid(rid);
if (g)
nice_name = g->gr_name;
break;
default:
break;
}
if (nice_name != NULL) {
(void) strlcpy(
node->who_perm.who_ug_name,
nice_name, 256);
} else {
/* User or group unknown */
(void) snprintf(
node->who_perm.who_ug_name,
sizeof (node->who_perm.who_ug_name),
"(unknown: %d)", rid);
}
}
uu_avl_insert(avl, node, idx);
} else {
node = found_node;
who_perm = &node->who_perm;
}
assert(who_perm != NULL);
(void) parse_who_perm(who_perm, nvl2, perm_locality);
}
return (0);
}
static inline int
parse_fs_perm_set(fs_perm_set_t *fspset, nvlist_t *nvl)
{
nvpair_t *nvp = NULL;
uu_avl_index_t idx = 0;
while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
nvlist_t *nvl2 = NULL;
const char *fsname = nvpair_name(nvp);
data_type_t type = nvpair_type(nvp);
fs_perm_t *fsperm = NULL;
fs_perm_node_t *node = safe_malloc(sizeof (fs_perm_node_t));
fsperm = &node->fspn_fsperm;
VERIFY(DATA_TYPE_NVLIST == type);
uu_list_node_init(node, &node->fspn_list_node,
fspset->fsps_list_pool);
idx = uu_list_numnodes(fspset->fsps_list);
fs_perm_init(fsperm, fspset, fsname);
if (nvpair_value_nvlist(nvp, &nvl2) != 0)
return (-1);
(void) parse_fs_perm(fsperm, nvl2);
uu_list_insert(fspset->fsps_list, node, idx);
}
return (0);
}
static inline const char *
deleg_perm_comment(zfs_deleg_note_t note)
{
const char *str = "";
/* subcommands */
switch (note) {
/* SUBCOMMANDS */
case ZFS_DELEG_NOTE_ALLOW:
str = gettext("Must also have the permission that is being"
"\n\t\t\t\tallowed");
break;
case ZFS_DELEG_NOTE_CLONE:
str = gettext("Must also have the 'create' ability and 'mount'"
"\n\t\t\t\tability in the origin file system");
break;
case ZFS_DELEG_NOTE_CREATE:
str = gettext("Must also have the 'mount' ability");
break;
case ZFS_DELEG_NOTE_DESTROY:
str = gettext("Must also have the 'mount' ability");
break;
case ZFS_DELEG_NOTE_DIFF:
str = gettext("Allows lookup of paths within a dataset;"
"\n\t\t\t\tgiven an object number. Ordinary users need this"
"\n\t\t\t\tin order to use zfs diff");
break;
case ZFS_DELEG_NOTE_HOLD:
str = gettext("Allows adding a user hold to a snapshot");
break;
case ZFS_DELEG_NOTE_MOUNT:
str = gettext("Allows mount/umount of ZFS datasets");
break;
case ZFS_DELEG_NOTE_PROMOTE:
str = gettext("Must also have the 'mount'\n\t\t\t\tand"
" 'promote' ability in the origin file system");
break;
case ZFS_DELEG_NOTE_RECEIVE:
str = gettext("Must also have the 'mount' and 'create'"
" ability");
break;
case ZFS_DELEG_NOTE_RELEASE:
str = gettext("Allows releasing a user hold which\n\t\t\t\t"
"might destroy the snapshot");
break;
case ZFS_DELEG_NOTE_RENAME:
str = gettext("Must also have the 'mount' and 'create'"
"\n\t\t\t\tability in the new parent");
break;
case ZFS_DELEG_NOTE_ROLLBACK:
str = gettext("");
break;
case ZFS_DELEG_NOTE_SEND:
str = gettext("");
break;
case ZFS_DELEG_NOTE_SHARE:
str = gettext("Allows sharing file systems over NFS or SMB"
"\n\t\t\t\tprotocols");
break;
case ZFS_DELEG_NOTE_SNAPSHOT:
str = gettext("");
break;
case ZFS_DELEG_NOTE_LOAD_KEY:
str = gettext("Allows loading or unloading an encryption key");
break;
case ZFS_DELEG_NOTE_CHANGE_KEY:
str = gettext("Allows changing or adding an encryption key");
break;
/*
* case ZFS_DELEG_NOTE_VSCAN:
* str = gettext("");
* break;
*/
/* OTHER */
case ZFS_DELEG_NOTE_GROUPQUOTA:
str = gettext("Allows accessing any groupquota@... property");
break;
case ZFS_DELEG_NOTE_GROUPUSED:
str = gettext("Allows reading any groupused@... property");
break;
case ZFS_DELEG_NOTE_USERPROP:
str = gettext("Allows changing any user property");
break;
case ZFS_DELEG_NOTE_USERQUOTA:
str = gettext("Allows accessing any userquota@... property");
break;
case ZFS_DELEG_NOTE_USERUSED:
str = gettext("Allows reading any userused@... property");
break;
case ZFS_DELEG_NOTE_USEROBJQUOTA:
str = gettext("Allows accessing any userobjquota@... property");
break;
case ZFS_DELEG_NOTE_GROUPOBJQUOTA:
str = gettext("Allows accessing any \n\t\t\t\t"
"groupobjquota@... property");
break;
case ZFS_DELEG_NOTE_GROUPOBJUSED:
str = gettext("Allows reading any groupobjused@... property");
break;
case ZFS_DELEG_NOTE_USEROBJUSED:
str = gettext("Allows reading any userobjused@... property");
break;
case ZFS_DELEG_NOTE_PROJECTQUOTA:
str = gettext("Allows accessing any projectquota@... property");
break;
case ZFS_DELEG_NOTE_PROJECTOBJQUOTA:
str = gettext("Allows accessing any \n\t\t\t\t"
"projectobjquota@... property");
break;
case ZFS_DELEG_NOTE_PROJECTUSED:
str = gettext("Allows reading any projectused@... property");
break;
case ZFS_DELEG_NOTE_PROJECTOBJUSED:
str = gettext("Allows accessing any \n\t\t\t\t"
"projectobjused@... property");
break;
/* other */
default:
str = "";
}
return (str);
}
struct allow_opts {
boolean_t local;
boolean_t descend;
boolean_t user;
boolean_t group;
boolean_t everyone;
boolean_t create;
boolean_t set;
boolean_t recursive; /* unallow only */
boolean_t prt_usage;
boolean_t prt_perms;
char *who;
char *perms;
const char *dataset;
};
static inline int
prop_cmp(const void *a, const void *b)
{
const char *str1 = *(const char **)a;
const char *str2 = *(const char **)b;
return (strcmp(str1, str2));
}
static void
allow_usage(boolean_t un, boolean_t requested, const char *msg)
{
const char *opt_desc[] = {
"-h", gettext("show this help message and exit"),
"-l", gettext("set permission locally"),
"-d", gettext("set permission for descents"),
"-u", gettext("set permission for user"),
"-g", gettext("set permission for group"),
"-e", gettext("set permission for everyone"),
"-c", gettext("set create time permission"),
"-s", gettext("define permission set"),
/* unallow only */
"-r", gettext("remove permissions recursively"),
};
size_t unallow_size = sizeof (opt_desc) / sizeof (char *);
size_t allow_size = unallow_size - 2;
const char *props[ZFS_NUM_PROPS];
int i;
size_t count = 0;
FILE *fp = requested ? stdout : stderr;
zprop_desc_t *pdtbl = zfs_prop_get_table();
const char *fmt = gettext("%-16s %-14s\t%s\n");
(void) fprintf(fp, gettext("Usage: %s\n"), get_usage(un ? HELP_UNALLOW :
HELP_ALLOW));
(void) fprintf(fp, gettext("Options:\n"));
for (i = 0; i < (un ? unallow_size : allow_size); i += 2) {
const char *opt = opt_desc[i];
const char *optdsc = opt_desc[i + 1];
(void) fprintf(fp, gettext(" %-10s %s\n"), opt, optdsc);
}
(void) fprintf(fp, gettext("\nThe following permissions are "
"supported:\n\n"));
(void) fprintf(fp, fmt, gettext("NAME"), gettext("TYPE"),
gettext("NOTES"));
for (i = 0; i < ZFS_NUM_DELEG_NOTES; i++) {
const char *perm_name = zfs_deleg_perm_tbl[i].z_perm;
zfs_deleg_note_t perm_note = zfs_deleg_perm_tbl[i].z_note;
const char *perm_type = deleg_perm_type(perm_note);
const char *perm_comment = deleg_perm_comment(perm_note);
(void) fprintf(fp, fmt, perm_name, perm_type, perm_comment);
}
for (i = 0; i < ZFS_NUM_PROPS; i++) {
zprop_desc_t *pd = &pdtbl[i];
if (pd->pd_visible != B_TRUE)
continue;
if (pd->pd_attr == PROP_READONLY)
continue;
props[count++] = pd->pd_name;
}
props[count] = NULL;
qsort(props, count, sizeof (char *), prop_cmp);
for (i = 0; i < count; i++)
(void) fprintf(fp, fmt, props[i], gettext("property"), "");
if (msg != NULL)
(void) fprintf(fp, gettext("\nzfs: error: %s"), msg);
exit(requested ? 0 : 2);
}
static inline const char *
munge_args(int argc, char **argv, boolean_t un, size_t expected_argc,
char **permsp)
{
if (un && argc == expected_argc - 1)
*permsp = NULL;
else if (argc == expected_argc)
*permsp = argv[argc - 2];
else
allow_usage(un, B_FALSE,
gettext("wrong number of parameters\n"));
return (argv[argc - 1]);
}
static void
parse_allow_args(int argc, char **argv, boolean_t un, struct allow_opts *opts)
{
int uge_sum = opts->user + opts->group + opts->everyone;
int csuge_sum = opts->create + opts->set + uge_sum;
int ldcsuge_sum = csuge_sum + opts->local + opts->descend;
int all_sum = un ? ldcsuge_sum + opts->recursive : ldcsuge_sum;
if (uge_sum > 1)
allow_usage(un, B_FALSE,
gettext("-u, -g, and -e are mutually exclusive\n"));
if (opts->prt_usage) {
if (argc == 0 && all_sum == 0)
allow_usage(un, B_TRUE, NULL);
else
usage(B_FALSE);
}
if (opts->set) {
if (csuge_sum > 1)
allow_usage(un, B_FALSE,
gettext("invalid options combined with -s\n"));
opts->dataset = munge_args(argc, argv, un, 3, &opts->perms);
if (argv[0][0] != '@')
allow_usage(un, B_FALSE,
gettext("invalid set name: missing '@' prefix\n"));
opts->who = argv[0];
} else if (opts->create) {
if (ldcsuge_sum > 1)
allow_usage(un, B_FALSE,
gettext("invalid options combined with -c\n"));
opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
} else if (opts->everyone) {
if (csuge_sum > 1)
allow_usage(un, B_FALSE,
gettext("invalid options combined with -e\n"));
opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
} else if (uge_sum == 0 && argc > 0 && strcmp(argv[0], "everyone")
== 0) {
opts->everyone = B_TRUE;
argc--;
argv++;
opts->dataset = munge_args(argc, argv, un, 2, &opts->perms);
} else if (argc == 1 && !un) {
opts->prt_perms = B_TRUE;
opts->dataset = argv[argc-1];
} else {
opts->dataset = munge_args(argc, argv, un, 3, &opts->perms);
opts->who = argv[0];
}
if (!opts->local && !opts->descend) {
opts->local = B_TRUE;
opts->descend = B_TRUE;
}
}
static void
store_allow_perm(zfs_deleg_who_type_t type, boolean_t local, boolean_t descend,
const char *who, char *perms, nvlist_t *top_nvl)
{
int i;
char ld[2] = { '\0', '\0' };
char who_buf[MAXNAMELEN + 32];
char base_type = '\0';
char set_type = '\0';
nvlist_t *base_nvl = NULL;
nvlist_t *set_nvl = NULL;
nvlist_t *nvl;
if (nvlist_alloc(&base_nvl, NV_UNIQUE_NAME, 0) != 0)
nomem();
if (nvlist_alloc(&set_nvl, NV_UNIQUE_NAME, 0) != 0)
nomem();
switch (type) {
case ZFS_DELEG_NAMED_SET_SETS:
case ZFS_DELEG_NAMED_SET:
set_type = ZFS_DELEG_NAMED_SET_SETS;
base_type = ZFS_DELEG_NAMED_SET;
ld[0] = ZFS_DELEG_NA;
break;
case ZFS_DELEG_CREATE_SETS:
case ZFS_DELEG_CREATE:
set_type = ZFS_DELEG_CREATE_SETS;
base_type = ZFS_DELEG_CREATE;
ld[0] = ZFS_DELEG_NA;
break;
case ZFS_DELEG_USER_SETS:
case ZFS_DELEG_USER:
set_type = ZFS_DELEG_USER_SETS;
base_type = ZFS_DELEG_USER;
if (local)
ld[0] = ZFS_DELEG_LOCAL;
if (descend)
ld[1] = ZFS_DELEG_DESCENDENT;
break;
case ZFS_DELEG_GROUP_SETS:
case ZFS_DELEG_GROUP:
set_type = ZFS_DELEG_GROUP_SETS;
base_type = ZFS_DELEG_GROUP;
if (local)
ld[0] = ZFS_DELEG_LOCAL;
if (descend)
ld[1] = ZFS_DELEG_DESCENDENT;
break;
case ZFS_DELEG_EVERYONE_SETS:
case ZFS_DELEG_EVERYONE:
set_type = ZFS_DELEG_EVERYONE_SETS;
base_type = ZFS_DELEG_EVERYONE;
if (local)
ld[0] = ZFS_DELEG_LOCAL;
if (descend)
ld[1] = ZFS_DELEG_DESCENDENT;
break;
default:
assert(set_type != '\0' && base_type != '\0');
}
if (perms != NULL) {
char *curr = perms;
char *end = curr + strlen(perms);
while (curr < end) {
char *delim = strchr(curr, ',');
if (delim == NULL)
delim = end;
else
*delim = '\0';
if (curr[0] == '@')
nvl = set_nvl;
else
nvl = base_nvl;
(void) nvlist_add_boolean(nvl, curr);
if (delim != end)
*delim = ',';
curr = delim + 1;
}
for (i = 0; i < 2; i++) {
char locality = ld[i];
if (locality == 0)
continue;
if (!nvlist_empty(base_nvl)) {
if (who != NULL)
(void) snprintf(who_buf,
sizeof (who_buf), "%c%c$%s",
base_type, locality, who);
else
(void) snprintf(who_buf,
sizeof (who_buf), "%c%c$",
base_type, locality);
(void) nvlist_add_nvlist(top_nvl, who_buf,
base_nvl);
}
if (!nvlist_empty(set_nvl)) {
if (who != NULL)
(void) snprintf(who_buf,
sizeof (who_buf), "%c%c$%s",
set_type, locality, who);
else
(void) snprintf(who_buf,
sizeof (who_buf), "%c%c$",
set_type, locality);
(void) nvlist_add_nvlist(top_nvl, who_buf,
set_nvl);
}
}
} else {
for (i = 0; i < 2; i++) {
char locality = ld[i];
if (locality == 0)
continue;
if (who != NULL)
(void) snprintf(who_buf, sizeof (who_buf),
"%c%c$%s", base_type, locality, who);
else
(void) snprintf(who_buf, sizeof (who_buf),
"%c%c$", base_type, locality);
(void) nvlist_add_boolean(top_nvl, who_buf);
if (who != NULL)
(void) snprintf(who_buf, sizeof (who_buf),
"%c%c$%s", set_type, locality, who);
else
(void) snprintf(who_buf, sizeof (who_buf),
"%c%c$", set_type, locality);
(void) nvlist_add_boolean(top_nvl, who_buf);
}
}
}
static int
construct_fsacl_list(boolean_t un, struct allow_opts *opts, nvlist_t **nvlp)
{
if (nvlist_alloc(nvlp, NV_UNIQUE_NAME, 0) != 0)
nomem();
if (opts->set) {
store_allow_perm(ZFS_DELEG_NAMED_SET, opts->local,
opts->descend, opts->who, opts->perms, *nvlp);
} else if (opts->create) {
store_allow_perm(ZFS_DELEG_CREATE, opts->local,
opts->descend, NULL, opts->perms, *nvlp);
} else if (opts->everyone) {
store_allow_perm(ZFS_DELEG_EVERYONE, opts->local,
opts->descend, NULL, opts->perms, *nvlp);
} else {
char *curr = opts->who;
char *end = curr + strlen(curr);
while (curr < end) {
const char *who;
zfs_deleg_who_type_t who_type = ZFS_DELEG_WHO_UNKNOWN;
char *endch;
char *delim = strchr(curr, ',');
char errbuf[256];
char id[64];
struct passwd *p = NULL;
struct group *g = NULL;
uid_t rid;
if (delim == NULL)
delim = end;
else
*delim = '\0';
rid = (uid_t)strtol(curr, &endch, 0);
if (opts->user) {
who_type = ZFS_DELEG_USER;
if (*endch != '\0')
p = getpwnam(curr);
else
p = getpwuid(rid);
if (p != NULL)
rid = p->pw_uid;
else if (*endch != '\0') {
(void) snprintf(errbuf, 256, gettext(
"invalid user %s\n"), curr);
allow_usage(un, B_TRUE, errbuf);
}
} else if (opts->group) {
who_type = ZFS_DELEG_GROUP;
if (*endch != '\0')
g = getgrnam(curr);
else
g = getgrgid(rid);
if (g != NULL)
rid = g->gr_gid;
else if (*endch != '\0') {
(void) snprintf(errbuf, 256, gettext(
"invalid group %s\n"), curr);
allow_usage(un, B_TRUE, errbuf);
}
} else {
if (*endch != '\0') {
p = getpwnam(curr);
} else {
p = getpwuid(rid);
}
if (p == NULL) {
if (*endch != '\0') {
g = getgrnam(curr);
} else {
g = getgrgid(rid);
}
}
if (p != NULL) {
who_type = ZFS_DELEG_USER;
rid = p->pw_uid;
} else if (g != NULL) {
who_type = ZFS_DELEG_GROUP;
rid = g->gr_gid;
} else {
(void) snprintf(errbuf, 256, gettext(
"invalid user/group %s\n"), curr);
allow_usage(un, B_TRUE, errbuf);
}
}
(void) sprintf(id, "%u", rid);
who = id;
store_allow_perm(who_type, opts->local,
opts->descend, who, opts->perms, *nvlp);
curr = delim + 1;
}
}
return (0);
}
static void
print_set_creat_perms(uu_avl_t *who_avl)
{
const char *sc_title[] = {
gettext("Permission sets:\n"),
gettext("Create time permissions:\n"),
NULL
};
who_perm_node_t *who_node = NULL;
int prev_weight = -1;
for (who_node = uu_avl_first(who_avl); who_node != NULL;
who_node = uu_avl_next(who_avl, who_node)) {
uu_avl_t *avl = who_node->who_perm.who_deleg_perm_avl;
zfs_deleg_who_type_t who_type = who_node->who_perm.who_type;
const char *who_name = who_node->who_perm.who_name;
int weight = who_type2weight(who_type);
boolean_t first = B_TRUE;
deleg_perm_node_t *deleg_node;
if (prev_weight != weight) {
(void) printf("%s", sc_title[weight]);
prev_weight = weight;
}
if (who_name == NULL || strnlen(who_name, 1) == 0)
(void) printf("\t");
else
(void) printf("\t%s ", who_name);
for (deleg_node = uu_avl_first(avl); deleg_node != NULL;
deleg_node = uu_avl_next(avl, deleg_node)) {
if (first) {
(void) printf("%s",
deleg_node->dpn_perm.dp_name);
first = B_FALSE;
} else
(void) printf(",%s",
deleg_node->dpn_perm.dp_name);
}
(void) printf("\n");
}
}
static void
print_uge_deleg_perms(uu_avl_t *who_avl, boolean_t local, boolean_t descend,
const char *title)
{
who_perm_node_t *who_node = NULL;
boolean_t prt_title = B_TRUE;
uu_avl_walk_t *walk;
if ((walk = uu_avl_walk_start(who_avl, UU_WALK_ROBUST)) == NULL)
nomem();
while ((who_node = uu_avl_walk_next(walk)) != NULL) {
const char *who_name = who_node->who_perm.who_name;
const char *nice_who_name = who_node->who_perm.who_ug_name;
uu_avl_t *avl = who_node->who_perm.who_deleg_perm_avl;
zfs_deleg_who_type_t who_type = who_node->who_perm.who_type;
char delim = ' ';
deleg_perm_node_t *deleg_node;
boolean_t prt_who = B_TRUE;
for (deleg_node = uu_avl_first(avl);
deleg_node != NULL;
deleg_node = uu_avl_next(avl, deleg_node)) {
if (local != deleg_node->dpn_perm.dp_local ||
descend != deleg_node->dpn_perm.dp_descend)
continue;
if (prt_who) {
const char *who = NULL;
if (prt_title) {
prt_title = B_FALSE;
(void) printf("%s", title);
}
switch (who_type) {
case ZFS_DELEG_USER_SETS:
case ZFS_DELEG_USER:
who = gettext("user");
if (nice_who_name)
who_name = nice_who_name;
break;
case ZFS_DELEG_GROUP_SETS:
case ZFS_DELEG_GROUP:
who = gettext("group");
if (nice_who_name)
who_name = nice_who_name;
break;
case ZFS_DELEG_EVERYONE_SETS:
case ZFS_DELEG_EVERYONE:
who = gettext("everyone");
who_name = NULL;
break;
default:
assert(who != NULL);
}
prt_who = B_FALSE;
if (who_name == NULL)
(void) printf("\t%s", who);
else
(void) printf("\t%s %s", who, who_name);
}
(void) printf("%c%s", delim,
deleg_node->dpn_perm.dp_name);
delim = ',';
}
if (!prt_who)
(void) printf("\n");
}
uu_avl_walk_end(walk);
}
static void
print_fs_perms(fs_perm_set_t *fspset)
{
fs_perm_node_t *node = NULL;
char buf[MAXNAMELEN + 32];
const char *dsname = buf;
for (node = uu_list_first(fspset->fsps_list); node != NULL;
node = uu_list_next(fspset->fsps_list, node)) {
uu_avl_t *sc_avl = node->fspn_fsperm.fsp_sc_avl;
uu_avl_t *uge_avl = node->fspn_fsperm.fsp_uge_avl;
int left = 0;
(void) snprintf(buf, sizeof (buf),
gettext("---- Permissions on %s "),
node->fspn_fsperm.fsp_name);
(void) printf("%s", dsname);
left = 70 - strlen(buf);
while (left-- > 0)
(void) printf("-");
(void) printf("\n");
print_set_creat_perms(sc_avl);
print_uge_deleg_perms(uge_avl, B_TRUE, B_FALSE,
gettext("Local permissions:\n"));
print_uge_deleg_perms(uge_avl, B_FALSE, B_TRUE,
gettext("Descendent permissions:\n"));
print_uge_deleg_perms(uge_avl, B_TRUE, B_TRUE,
gettext("Local+Descendent permissions:\n"));
}
}
static fs_perm_set_t fs_perm_set = { NULL, NULL, NULL, NULL };
struct deleg_perms {
boolean_t un;
nvlist_t *nvl;
};
static int
set_deleg_perms(zfs_handle_t *zhp, void *data)
{
struct deleg_perms *perms = (struct deleg_perms *)data;
zfs_type_t zfs_type = zfs_get_type(zhp);
if (zfs_type != ZFS_TYPE_FILESYSTEM && zfs_type != ZFS_TYPE_VOLUME)
return (0);
return (zfs_set_fsacl(zhp, perms->un, perms->nvl));
}
static int
zfs_do_allow_unallow_impl(int argc, char **argv, boolean_t un)
{
zfs_handle_t *zhp;
nvlist_t *perm_nvl = NULL;
nvlist_t *update_perm_nvl = NULL;
int error = 1;
int c;
struct allow_opts opts = { 0 };
const char *optstr = un ? "ldugecsrh" : "ldugecsh";
/* check opts */
while ((c = getopt(argc, argv, optstr)) != -1) {
switch (c) {
case 'l':
opts.local = B_TRUE;
break;
case 'd':
opts.descend = B_TRUE;
break;
case 'u':
opts.user = B_TRUE;
break;
case 'g':
opts.group = B_TRUE;
break;
case 'e':
opts.everyone = B_TRUE;
break;
case 's':
opts.set = B_TRUE;
break;
case 'c':
opts.create = B_TRUE;
break;
case 'r':
opts.recursive = B_TRUE;
break;
case ':':
(void) fprintf(stderr, gettext("missing argument for "
"'%c' option\n"), optopt);
usage(B_FALSE);
break;
case 'h':
opts.prt_usage = B_TRUE;
break;
case '?':
(void) fprintf(stderr, gettext("invalid option '%c'\n"),
optopt);
usage(B_FALSE);
}
}
argc -= optind;
argv += optind;
/* check arguments */
parse_allow_args(argc, argv, un, &opts);
/* try to open the dataset */
if ((zhp = zfs_open(g_zfs, opts.dataset, ZFS_TYPE_FILESYSTEM |
ZFS_TYPE_VOLUME)) == NULL) {
(void) fprintf(stderr, "Failed to open dataset: %s\n",
opts.dataset);
return (-1);
}
if (zfs_get_fsacl(zhp, &perm_nvl) != 0)
goto cleanup2;
fs_perm_set_init(&fs_perm_set);
if (parse_fs_perm_set(&fs_perm_set, perm_nvl) != 0) {
(void) fprintf(stderr, "Failed to parse fsacl permissions\n");
goto cleanup1;
}
if (opts.prt_perms)
print_fs_perms(&fs_perm_set);
else {
(void) construct_fsacl_list(un, &opts, &update_perm_nvl);
if (zfs_set_fsacl(zhp, un, update_perm_nvl) != 0)
goto cleanup0;
if (un && opts.recursive) {
struct deleg_perms data = { un, update_perm_nvl };
if (zfs_iter_filesystems(zhp, set_deleg_perms,
&data) != 0)
goto cleanup0;
}
}
error = 0;
cleanup0:
nvlist_free(perm_nvl);
nvlist_free(update_perm_nvl);
cleanup1:
fs_perm_set_fini(&fs_perm_set);
cleanup2:
zfs_close(zhp);
return (error);
}
static int
zfs_do_allow(int argc, char **argv)
{
return (zfs_do_allow_unallow_impl(argc, argv, B_FALSE));
}
static int
zfs_do_unallow(int argc, char **argv)
{
return (zfs_do_allow_unallow_impl(argc, argv, B_TRUE));
}
static int
zfs_do_hold_rele_impl(int argc, char **argv, boolean_t holding)
{
int errors = 0;
int i;
const char *tag;
boolean_t recursive = B_FALSE;
const char *opts = holding ? "rt" : "r";
int c;
/* check options */
while ((c = getopt(argc, argv, opts)) != -1) {
switch (c) {
case 'r':
recursive = B_TRUE;
break;
case '?':
(void) fprintf(stderr, gettext("invalid option '%c'\n"),
optopt);
usage(B_FALSE);
}
}
argc -= optind;
argv += optind;
/* check number of arguments */
if (argc < 2)
usage(B_FALSE);
tag = argv[0];
--argc;
++argv;
if (holding && tag[0] == '.') {
/* tags starting with '.' are reserved for libzfs */
(void) fprintf(stderr, gettext("tag may not start with '.'\n"));
usage(B_FALSE);
}
for (i = 0; i < argc; ++i) {
zfs_handle_t *zhp;
char parent[ZFS_MAX_DATASET_NAME_LEN];
const char *delim;
char *path = argv[i];
delim = strchr(path, '@');
if (delim == NULL) {
(void) fprintf(stderr,
gettext("'%s' is not a snapshot\n"), path);
++errors;
continue;
}
(void) strncpy(parent, path, delim - path);
parent[delim - path] = '\0';
zhp = zfs_open(g_zfs, parent,
ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
if (zhp == NULL) {
++errors;
continue;
}
if (holding) {
if (zfs_hold(zhp, delim+1, tag, recursive, -1) != 0)
++errors;
} else {
if (zfs_release(zhp, delim+1, tag, recursive) != 0)
++errors;
}
zfs_close(zhp);
}
return (errors != 0);
}
/*
* zfs hold [-r] [-t] <tag> <snap> ...
*
* -r Recursively hold
*
* Apply a user-hold with the given tag to the list of snapshots.
*/
static int
zfs_do_hold(int argc, char **argv)
{
return (zfs_do_hold_rele_impl(argc, argv, B_TRUE));
}
/*
* zfs release [-r] <tag> <snap> ...
*
* -r Recursively release
*
* Release a user-hold with the given tag from the list of snapshots.
*/
static int
zfs_do_release(int argc, char **argv)
{
return (zfs_do_hold_rele_impl(argc, argv, B_FALSE));
}
typedef struct holds_cbdata {
boolean_t cb_recursive;
const char *cb_snapname;
nvlist_t **cb_nvlp;
size_t cb_max_namelen;
size_t cb_max_taglen;
} holds_cbdata_t;
#define STRFTIME_FMT_STR "%a %b %e %H:%M %Y"
#define DATETIME_BUF_LEN (32)
/*
*
*/
static void
print_holds(boolean_t scripted, int nwidth, int tagwidth, nvlist_t *nvl)
{
int i;
nvpair_t *nvp = NULL;
char *hdr_cols[] = { "NAME", "TAG", "TIMESTAMP" };
const char *col;
if (!scripted) {
for (i = 0; i < 3; i++) {
col = gettext(hdr_cols[i]);
if (i < 2)
(void) printf("%-*s ", i ? tagwidth : nwidth,
col);
else
(void) printf("%s\n", col);
}
}
while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
char *zname = nvpair_name(nvp);
nvlist_t *nvl2;
nvpair_t *nvp2 = NULL;
(void) nvpair_value_nvlist(nvp, &nvl2);
while ((nvp2 = nvlist_next_nvpair(nvl2, nvp2)) != NULL) {
char tsbuf[DATETIME_BUF_LEN];
char *tagname = nvpair_name(nvp2);
uint64_t val = 0;
time_t time;
struct tm t;
(void) nvpair_value_uint64(nvp2, &val);
time = (time_t)val;
(void) localtime_r(&time, &t);
(void) strftime(tsbuf, DATETIME_BUF_LEN,
gettext(STRFTIME_FMT_STR), &t);
if (scripted) {
(void) printf("%s\t%s\t%s\n", zname,
tagname, tsbuf);
} else {
(void) printf("%-*s %-*s %s\n", nwidth,
zname, tagwidth, tagname, tsbuf);
}
}
}
}
/*
* Generic callback function to list a dataset or snapshot.
*/
static int
holds_callback(zfs_handle_t *zhp, void *data)
{
holds_cbdata_t *cbp = data;
nvlist_t *top_nvl = *cbp->cb_nvlp;
nvlist_t *nvl = NULL;
nvpair_t *nvp = NULL;
const char *zname = zfs_get_name(zhp);
size_t znamelen = strlen(zname);
if (cbp->cb_recursive) {
const char *snapname;
char *delim = strchr(zname, '@');
if (delim == NULL)
return (0);
snapname = delim + 1;
if (strcmp(cbp->cb_snapname, snapname))
return (0);
}
if (zfs_get_holds(zhp, &nvl) != 0)
return (-1);
if (znamelen > cbp->cb_max_namelen)
cbp->cb_max_namelen = znamelen;
while ((nvp = nvlist_next_nvpair(nvl, nvp)) != NULL) {
const char *tag = nvpair_name(nvp);
size_t taglen = strlen(tag);
if (taglen > cbp->cb_max_taglen)
cbp->cb_max_taglen = taglen;
}
return (nvlist_add_nvlist(top_nvl, zname, nvl));
}
/*
* zfs holds [-rH] <snap> ...
*
* -r Lists holds that are set on the named snapshots recursively.
* -H Scripted mode; elide headers and separate columns by tabs.
*/
static int
zfs_do_holds(int argc, char **argv)
{
int errors = 0;
int c;
int i;
boolean_t scripted = B_FALSE;
boolean_t recursive = B_FALSE;
const char *opts = "rH";
nvlist_t *nvl;
int types = ZFS_TYPE_SNAPSHOT;
holds_cbdata_t cb = { 0 };
int limit = 0;
int ret = 0;
int flags = 0;
/* check options */
while ((c = getopt(argc, argv, opts)) != -1) {
switch (c) {
case 'r':
recursive = B_TRUE;
break;
case 'H':
scripted = B_TRUE;
break;
case '?':
(void) fprintf(stderr, gettext("invalid option '%c'\n"),
optopt);
usage(B_FALSE);
}
}
if (recursive) {
types |= ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME;
flags |= ZFS_ITER_RECURSE;
}
argc -= optind;
argv += optind;
/* check number of arguments */
if (argc < 1)
usage(B_FALSE);
if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0)
nomem();
for (i = 0; i < argc; ++i) {
char *snapshot = argv[i];
const char *delim;
const char *snapname;
delim = strchr(snapshot, '@');
if (delim == NULL) {
(void) fprintf(stderr,
gettext("'%s' is not a snapshot\n"), snapshot);
++errors;
continue;
}
snapname = delim + 1;
if (recursive)
snapshot[delim - snapshot] = '\0';
cb.cb_recursive = recursive;
cb.cb_snapname = snapname;
cb.cb_nvlp = &nvl;
/*
* 1. collect holds data, set format options
*/
ret = zfs_for_each(argc, argv, flags, types, NULL, NULL, limit,
holds_callback, &cb);
if (ret != 0)
++errors;
}
/*
* 2. print holds data
*/
print_holds(scripted, cb.cb_max_namelen, cb.cb_max_taglen, nvl);
if (nvlist_empty(nvl))
(void) fprintf(stderr, gettext("no datasets available\n"));
nvlist_free(nvl);
return (0 != errors);
}
#define CHECK_SPINNER 30
#define SPINNER_TIME 3 /* seconds */
#define MOUNT_TIME 1 /* seconds */
typedef struct get_all_state {
boolean_t ga_verbose;
get_all_cb_t *ga_cbp;
} get_all_state_t;
static int
get_one_dataset(zfs_handle_t *zhp, void *data)
{
static char *spin[] = { "-", "\\", "|", "/" };
static int spinval = 0;
static int spincheck = 0;
static time_t last_spin_time = (time_t)0;
get_all_state_t *state = data;
zfs_type_t type = zfs_get_type(zhp);
if (state->ga_verbose) {
if (--spincheck < 0) {
time_t now = time(NULL);
if (last_spin_time + SPINNER_TIME < now) {
update_progress(spin[spinval++ % 4]);
last_spin_time = now;
}
spincheck = CHECK_SPINNER;
}
}
/*
* Iterate over any nested datasets.
*/
if (zfs_iter_filesystems(zhp, get_one_dataset, data) != 0) {
zfs_close(zhp);
return (1);
}
/*
* Skip any datasets whose type does not match.
*/
if ((type & ZFS_TYPE_FILESYSTEM) == 0) {
zfs_close(zhp);
return (0);
}
libzfs_add_handle(state->ga_cbp, zhp);
assert(state->ga_cbp->cb_used <= state->ga_cbp->cb_alloc);
return (0);
}
static void
get_all_datasets(get_all_cb_t *cbp, boolean_t verbose)
{
get_all_state_t state = {
.ga_verbose = verbose,
.ga_cbp = cbp
};
if (verbose)
set_progress_header(gettext("Reading ZFS config"));
(void) zfs_iter_root(g_zfs, get_one_dataset, &state);
if (verbose)
finish_progress(gettext("done."));
}
/*
* Generic callback for sharing or mounting filesystems. Because the code is so
* similar, we have a common function with an extra parameter to determine which
* mode we are using.
*/
typedef enum { OP_SHARE, OP_MOUNT } share_mount_op_t;
typedef struct share_mount_state {
share_mount_op_t sm_op;
boolean_t sm_verbose;
int sm_flags;
char *sm_options;
char *sm_proto; /* only valid for OP_SHARE */
pthread_mutex_t sm_lock; /* protects the remaining fields */
uint_t sm_total; /* number of filesystems to process */
uint_t sm_done; /* number of filesystems processed */
int sm_status; /* -1 if any of the share/mount operations failed */
} share_mount_state_t;
/*
* Share or mount a dataset.
*/
static int
share_mount_one(zfs_handle_t *zhp, int op, int flags, char *protocol,
boolean_t explicit, const char *options)
{
char mountpoint[ZFS_MAXPROPLEN];
char shareopts[ZFS_MAXPROPLEN];
char smbshareopts[ZFS_MAXPROPLEN];
const char *cmdname = op == OP_SHARE ? "share" : "mount";
struct mnttab mnt;
uint64_t zoned, canmount;
boolean_t shared_nfs, shared_smb;
assert(zfs_get_type(zhp) & ZFS_TYPE_FILESYSTEM);
/*
* Check to make sure we can mount/share this dataset. If we
* are in the global zone and the filesystem is exported to a
* local zone, or if we are in a local zone and the
* filesystem is not exported, then it is an error.
*/
zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED);
if (zoned && getzoneid() == GLOBAL_ZONEID) {
if (!explicit)
return (0);
(void) fprintf(stderr, gettext("cannot %s '%s': "
"dataset is exported to a local zone\n"), cmdname,
zfs_get_name(zhp));
return (1);
} else if (!zoned && getzoneid() != GLOBAL_ZONEID) {
if (!explicit)
return (0);
(void) fprintf(stderr, gettext("cannot %s '%s': "
"permission denied\n"), cmdname,
zfs_get_name(zhp));
return (1);
}
/*
* Ignore any filesystems which don't apply to us. This
* includes those with a legacy mountpoint, or those with
* legacy share options.
*/
verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mountpoint,
sizeof (mountpoint), NULL, NULL, 0, B_FALSE) == 0);
verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, shareopts,
sizeof (shareopts), NULL, NULL, 0, B_FALSE) == 0);
verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshareopts,
sizeof (smbshareopts), NULL, NULL, 0, B_FALSE) == 0);
if (op == OP_SHARE && strcmp(shareopts, "off") == 0 &&
strcmp(smbshareopts, "off") == 0) {
if (!explicit)
return (0);
(void) fprintf(stderr, gettext("cannot share '%s': "
"legacy share\n"), zfs_get_name(zhp));
(void) fprintf(stderr, gettext("use exports(5) or "
"smb.conf(5) to share this filesystem, or set "
"the sharenfs or sharesmb property\n"));
return (1);
}
/*
* We cannot share or mount legacy filesystems. If the
* shareopts is non-legacy but the mountpoint is legacy, we
* treat it as a legacy share.
*/
if (strcmp(mountpoint, "legacy") == 0) {
if (!explicit)
return (0);
(void) fprintf(stderr, gettext("cannot %s '%s': "
"legacy mountpoint\n"), cmdname, zfs_get_name(zhp));
(void) fprintf(stderr, gettext("use %s(8) to "
"%s this filesystem\n"), cmdname, cmdname);
return (1);
}
if (strcmp(mountpoint, "none") == 0) {
if (!explicit)
return (0);
(void) fprintf(stderr, gettext("cannot %s '%s': no "
"mountpoint set\n"), cmdname, zfs_get_name(zhp));
return (1);
}
/*
* canmount explicit outcome
* on no pass through
* on yes pass through
* off no return 0
* off yes display error, return 1
* noauto no return 0
* noauto yes pass through
*/
canmount = zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT);
if (canmount == ZFS_CANMOUNT_OFF) {
if (!explicit)
return (0);
(void) fprintf(stderr, gettext("cannot %s '%s': "
"'canmount' property is set to 'off'\n"), cmdname,
zfs_get_name(zhp));
return (1);
} else if (canmount == ZFS_CANMOUNT_NOAUTO && !explicit) {
/*
* When performing a 'zfs mount -a', we skip any mounts for
* datasets that have 'noauto' set. Sharing a dataset with
* 'noauto' set is only allowed if it's mounted.
*/
if (op == OP_MOUNT)
return (0);
if (op == OP_SHARE && !zfs_is_mounted(zhp, NULL)) {
/* also purge it from existing exports */
zfs_unshareall_bypath(zhp, mountpoint);
return (0);
}
}
/*
* If this filesystem is encrypted and does not have
* a loaded key, we can not mount it.
*/
if ((flags & MS_CRYPT) == 0 &&
zfs_prop_get_int(zhp, ZFS_PROP_ENCRYPTION) != ZIO_CRYPT_OFF &&
zfs_prop_get_int(zhp, ZFS_PROP_KEYSTATUS) ==
ZFS_KEYSTATUS_UNAVAILABLE) {
if (!explicit)
return (0);
(void) fprintf(stderr, gettext("cannot %s '%s': "
"encryption key not loaded\n"), cmdname, zfs_get_name(zhp));
return (1);
}
/*
* If this filesystem is inconsistent and has a receive resume
* token, we can not mount it.
*/
if (zfs_prop_get_int(zhp, ZFS_PROP_INCONSISTENT) &&
zfs_prop_get(zhp, ZFS_PROP_RECEIVE_RESUME_TOKEN,
NULL, 0, NULL, NULL, 0, B_TRUE) == 0) {
if (!explicit)
return (0);
(void) fprintf(stderr, gettext("cannot %s '%s': "
"Contains partially-completed state from "
"\"zfs receive -s\", which can be resumed with "
"\"zfs send -t\"\n"),
cmdname, zfs_get_name(zhp));
return (1);
}
if (zfs_prop_get_int(zhp, ZFS_PROP_REDACTED) && !(flags & MS_FORCE)) {
if (!explicit)
return (0);
(void) fprintf(stderr, gettext("cannot %s '%s': "
"Dataset is not complete, was created by receiving "
"a redacted zfs send stream.\n"), cmdname,
zfs_get_name(zhp));
return (1);
}
/*
* At this point, we have verified that the mountpoint and/or
* shareopts are appropriate for auto management. If the
* filesystem is already mounted or shared, return (failing
* for explicit requests); otherwise mount or share the
* filesystem.
*/
switch (op) {
case OP_SHARE:
shared_nfs = zfs_is_shared_nfs(zhp, NULL);
shared_smb = zfs_is_shared_smb(zhp, NULL);
if ((shared_nfs && shared_smb) ||
(shared_nfs && strcmp(shareopts, "on") == 0 &&
strcmp(smbshareopts, "off") == 0) ||
(shared_smb && strcmp(smbshareopts, "on") == 0 &&
strcmp(shareopts, "off") == 0)) {
if (!explicit)
return (0);
(void) fprintf(stderr, gettext("cannot share "
"'%s': filesystem already shared\n"),
zfs_get_name(zhp));
return (1);
}
if (!zfs_is_mounted(zhp, NULL) &&
zfs_mount(zhp, NULL, flags) != 0)
return (1);
if (protocol == NULL) {
if (zfs_shareall(zhp) != 0)
return (1);
} else if (strcmp(protocol, "nfs") == 0) {
if (zfs_share_nfs(zhp))
return (1);
} else if (strcmp(protocol, "smb") == 0) {
if (zfs_share_smb(zhp))
return (1);
} else {
(void) fprintf(stderr, gettext("cannot share "
"'%s': invalid share type '%s' "
"specified\n"),
zfs_get_name(zhp), protocol);
return (1);
}
break;
case OP_MOUNT:
if (options == NULL)
mnt.mnt_mntopts = "";
else
mnt.mnt_mntopts = (char *)options;
if (!hasmntopt(&mnt, MNTOPT_REMOUNT) &&
zfs_is_mounted(zhp, NULL)) {
if (!explicit)
return (0);
(void) fprintf(stderr, gettext("cannot mount "
"'%s': filesystem already mounted\n"),
zfs_get_name(zhp));
return (1);
}
if (zfs_mount(zhp, options, flags) != 0)
return (1);
break;
}
return (0);
}
/*
* Reports progress in the form "(current/total)". Not thread-safe.
*/
static void
report_mount_progress(int current, int total)
{
static time_t last_progress_time = 0;
time_t now = time(NULL);
char info[32];
/* display header if we're here for the first time */
if (current == 1) {
set_progress_header(gettext("Mounting ZFS filesystems"));
} else if (current != total && last_progress_time + MOUNT_TIME >= now) {
/* too soon to report again */
return;
}
last_progress_time = now;
(void) sprintf(info, "(%d/%d)", current, total);
if (current == total)
finish_progress(info);
else
update_progress(info);
}
/*
* zfs_foreach_mountpoint() callback that mounts or shares one filesystem and
* updates the progress meter.
*/
static int
share_mount_one_cb(zfs_handle_t *zhp, void *arg)
{
share_mount_state_t *sms = arg;
int ret;
ret = share_mount_one(zhp, sms->sm_op, sms->sm_flags, sms->sm_proto,
B_FALSE, sms->sm_options);
pthread_mutex_lock(&sms->sm_lock);
if (ret != 0)
sms->sm_status = ret;
sms->sm_done++;
if (sms->sm_verbose)
report_mount_progress(sms->sm_done, sms->sm_total);
pthread_mutex_unlock(&sms->sm_lock);
return (ret);
}
static void
append_options(char *mntopts, char *newopts)
{
int len = strlen(mntopts);
/* original length plus new string to append plus 1 for the comma */
if (len + 1 + strlen(newopts) >= MNT_LINE_MAX) {
(void) fprintf(stderr, gettext("the opts argument for "
"'%s' option is too long (more than %d chars)\n"),
"-o", MNT_LINE_MAX);
usage(B_FALSE);
}
if (*mntopts)
mntopts[len++] = ',';
(void) strcpy(&mntopts[len], newopts);
}
static int
share_mount(int op, int argc, char **argv)
{
int do_all = 0;
boolean_t verbose = B_FALSE;
int c, ret = 0;
char *options = NULL;
int flags = 0;
/* check options */
while ((c = getopt(argc, argv, op == OP_MOUNT ? ":alvo:Of" : "al"))
!= -1) {
switch (c) {
case 'a':
do_all = 1;
break;
case 'v':
verbose = B_TRUE;
break;
case 'l':
flags |= MS_CRYPT;
break;
case 'o':
if (*optarg == '\0') {
(void) fprintf(stderr, gettext("empty mount "
"options (-o) specified\n"));
usage(B_FALSE);
}
if (options == NULL)
options = safe_malloc(MNT_LINE_MAX + 1);
/* option validation is done later */
append_options(options, optarg);
break;
case 'O':
flags |= MS_OVERLAY;
break;
case 'f':
flags |= MS_FORCE;
break;
case ':':
(void) fprintf(stderr, gettext("missing argument for "
"'%c' option\n"), optopt);
usage(B_FALSE);
break;
case '?':
(void) fprintf(stderr, gettext("invalid option '%c'\n"),
optopt);
usage(B_FALSE);
}
}
argc -= optind;
argv += optind;
/* check number of arguments */
if (do_all) {
char *protocol = NULL;
if (op == OP_SHARE && argc > 0) {
if (strcmp(argv[0], "nfs") != 0 &&
strcmp(argv[0], "smb") != 0) {
(void) fprintf(stderr, gettext("share type "
"must be 'nfs' or 'smb'\n"));
usage(B_FALSE);
}
protocol = argv[0];
argc--;
argv++;
}
if (argc != 0) {
(void) fprintf(stderr, gettext("too many arguments\n"));
usage(B_FALSE);
}
start_progress_timer();
get_all_cb_t cb = { 0 };
get_all_datasets(&cb, verbose);
if (cb.cb_used == 0) {
free(options);
return (0);
}
share_mount_state_t share_mount_state = { 0 };
share_mount_state.sm_op = op;
share_mount_state.sm_verbose = verbose;
share_mount_state.sm_flags = flags;
share_mount_state.sm_options = options;
share_mount_state.sm_proto = protocol;
share_mount_state.sm_total = cb.cb_used;
pthread_mutex_init(&share_mount_state.sm_lock, NULL);
/*
* libshare isn't mt-safe, so only do the operation in parallel
* if we're mounting. Additionally, the key-loading option must
* be serialized so that we can prompt the user for their keys
* in a consistent manner.
*/
zfs_foreach_mountpoint(g_zfs, cb.cb_handles, cb.cb_used,
share_mount_one_cb, &share_mount_state,
op == OP_MOUNT && !(flags & MS_CRYPT));
zfs_commit_all_shares();
ret = share_mount_state.sm_status;
for (int i = 0; i < cb.cb_used; i++)
zfs_close(cb.cb_handles[i]);
free(cb.cb_handles);
} else if (argc == 0) {
FILE *mnttab;
struct mnttab entry;
if ((op == OP_SHARE) || (options != NULL)) {
(void) fprintf(stderr, gettext("missing filesystem "
"argument (specify -a for all)\n"));
usage(B_FALSE);
}
/*
* When mount is given no arguments, go through
* /proc/self/mounts and display any active ZFS mounts.
* We hide any snapshots, since they are controlled
* automatically.
*/
if ((mnttab = fopen(MNTTAB, "re")) == NULL) {
free(options);
return (ENOENT);
}
while (getmntent(mnttab, &entry) == 0) {
if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0 ||
strchr(entry.mnt_special, '@') != NULL)
continue;
(void) printf("%-30s %s\n", entry.mnt_special,
entry.mnt_mountp);
}
(void) fclose(mnttab);
} else {
zfs_handle_t *zhp;
if (argc > 1) {
(void) fprintf(stderr,
gettext("too many arguments\n"));
usage(B_FALSE);
}
if ((zhp = zfs_open(g_zfs, argv[0],
ZFS_TYPE_FILESYSTEM)) == NULL) {
ret = 1;
} else {
ret = share_mount_one(zhp, op, flags, NULL, B_TRUE,
options);
zfs_commit_all_shares();
zfs_close(zhp);
}
}
free(options);
return (ret);
}
/*
* zfs mount -a [nfs]
* zfs mount filesystem
*
* Mount all filesystems, or mount the given filesystem.
*/
static int
zfs_do_mount(int argc, char **argv)
{
return (share_mount(OP_MOUNT, argc, argv));
}
/*
* zfs share -a [nfs | smb]
* zfs share filesystem
*
* Share all filesystems, or share the given filesystem.
*/
static int
zfs_do_share(int argc, char **argv)
{
return (share_mount(OP_SHARE, argc, argv));
}
typedef struct unshare_unmount_node {
zfs_handle_t *un_zhp;
char *un_mountp;
uu_avl_node_t un_avlnode;
} unshare_unmount_node_t;
static int
unshare_unmount_compare(const void *larg, const void *rarg, void *unused)
{
(void) unused;
const unshare_unmount_node_t *l = larg;
const unshare_unmount_node_t *r = rarg;
return (strcmp(l->un_mountp, r->un_mountp));
}
/*
* Convenience routine used by zfs_do_umount() and manual_unmount(). Given an
* absolute path, find the entry /proc/self/mounts, verify that it's a
* ZFS filesystem, and unmount it appropriately.
*/
static int
unshare_unmount_path(int op, char *path, int flags, boolean_t is_manual)
{
zfs_handle_t *zhp;
int ret = 0;
struct stat64 statbuf;
struct extmnttab entry;
const char *cmdname = (op == OP_SHARE) ? "unshare" : "unmount";
ino_t path_inode;
/*
* Search for the given (major,minor) pair in the mount table.
*/
if (getextmntent(path, &entry, &statbuf) != 0) {
if (op == OP_SHARE) {
(void) fprintf(stderr, gettext("cannot %s '%s': not "
"currently mounted\n"), cmdname, path);
return (1);
}
(void) fprintf(stderr, gettext("warning: %s not in"
"/proc/self/mounts\n"), path);
if ((ret = umount2(path, flags)) != 0)
(void) fprintf(stderr, gettext("%s: %s\n"), path,
strerror(errno));
return (ret != 0);
}
path_inode = statbuf.st_ino;
if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) {
(void) fprintf(stderr, gettext("cannot %s '%s': not a ZFS "
"filesystem\n"), cmdname, path);
return (1);
}
if ((zhp = zfs_open(g_zfs, entry.mnt_special,
ZFS_TYPE_FILESYSTEM)) == NULL)
return (1);
ret = 1;
if (stat64(entry.mnt_mountp, &statbuf) != 0) {
(void) fprintf(stderr, gettext("cannot %s '%s': %s\n"),
cmdname, path, strerror(errno));
goto out;
} else if (statbuf.st_ino != path_inode) {
(void) fprintf(stderr, gettext("cannot "
"%s '%s': not a mountpoint\n"), cmdname, path);
goto out;
}
if (op == OP_SHARE) {
char nfs_mnt_prop[ZFS_MAXPROPLEN];
char smbshare_prop[ZFS_MAXPROPLEN];
verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS, nfs_mnt_prop,
sizeof (nfs_mnt_prop), NULL, NULL, 0, B_FALSE) == 0);
verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB, smbshare_prop,
sizeof (smbshare_prop), NULL, NULL, 0, B_FALSE) == 0);
if (strcmp(nfs_mnt_prop, "off") == 0 &&
strcmp(smbshare_prop, "off") == 0) {
(void) fprintf(stderr, gettext("cannot unshare "
"'%s': legacy share\n"), path);
(void) fprintf(stderr, gettext("use exportfs(8) "
"or smbcontrol(1) to unshare this filesystem\n"));
} else if (!zfs_is_shared(zhp)) {
(void) fprintf(stderr, gettext("cannot unshare '%s': "
"not currently shared\n"), path);
} else {
ret = zfs_unshareall_bypath(zhp, path);
zfs_commit_all_shares();
}
} else {
char mtpt_prop[ZFS_MAXPROPLEN];
verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT, mtpt_prop,
sizeof (mtpt_prop), NULL, NULL, 0, B_FALSE) == 0);
if (is_manual) {
ret = zfs_unmount(zhp, NULL, flags);
} else if (strcmp(mtpt_prop, "legacy") == 0) {
(void) fprintf(stderr, gettext("cannot unmount "
"'%s': legacy mountpoint\n"),
zfs_get_name(zhp));
(void) fprintf(stderr, gettext("use umount(8) "
"to unmount this filesystem\n"));
} else {
ret = zfs_unmountall(zhp, flags);
}
}
out:
zfs_close(zhp);
return (ret != 0);
}
/*
* Generic callback for unsharing or unmounting a filesystem.
*/
static int
unshare_unmount(int op, int argc, char **argv)
{
int do_all = 0;
int flags = 0;
int ret = 0;
int c;
zfs_handle_t *zhp;
char nfs_mnt_prop[ZFS_MAXPROPLEN];
char sharesmb[ZFS_MAXPROPLEN];
/* check options */
while ((c = getopt(argc, argv, op == OP_SHARE ? ":a" : "afu")) != -1) {
switch (c) {
case 'a':
do_all = 1;
break;
case 'f':
flags |= MS_FORCE;
break;
case 'u':
flags |= MS_CRYPT;
break;
case ':':
(void) fprintf(stderr, gettext("missing argument for "
"'%c' option\n"), optopt);
usage(B_FALSE);
break;
case '?':
(void) fprintf(stderr, gettext("invalid option '%c'\n"),
optopt);
usage(B_FALSE);
}
}
argc -= optind;
argv += optind;
if (do_all) {
/*
* We could make use of zfs_for_each() to walk all datasets in
* the system, but this would be very inefficient, especially
* since we would have to linearly search /proc/self/mounts for
* each one. Instead, do one pass through /proc/self/mounts
* looking for zfs entries and call zfs_unmount() for each one.
*
* Things get a little tricky if the administrator has created
* mountpoints beneath other ZFS filesystems. In this case, we
* have to unmount the deepest filesystems first. To accomplish
* this, we place all the mountpoints in an AVL tree sorted by
* the special type (dataset name), and walk the result in
* reverse to make sure to get any snapshots first.
*/
FILE *mnttab;
struct mnttab entry;
uu_avl_pool_t *pool;
uu_avl_t *tree = NULL;
unshare_unmount_node_t *node;
uu_avl_index_t idx;
uu_avl_walk_t *walk;
char *protocol = NULL;
if (op == OP_SHARE && argc > 0) {
if (strcmp(argv[0], "nfs") != 0 &&
strcmp(argv[0], "smb") != 0) {
(void) fprintf(stderr, gettext("share type "
"must be 'nfs' or 'smb'\n"));
usage(B_FALSE);
}
protocol = argv[0];
argc--;
argv++;
}
if (argc != 0) {
(void) fprintf(stderr, gettext("too many arguments\n"));
usage(B_FALSE);
}
if (((pool = uu_avl_pool_create("unmount_pool",
sizeof (unshare_unmount_node_t),
offsetof(unshare_unmount_node_t, un_avlnode),
unshare_unmount_compare, UU_DEFAULT)) == NULL) ||
((tree = uu_avl_create(pool, NULL, UU_DEFAULT)) == NULL))
nomem();
if ((mnttab = fopen(MNTTAB, "re")) == NULL)
return (ENOENT);
while (getmntent(mnttab, &entry) == 0) {
/* ignore non-ZFS entries */
if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0)
continue;
/* ignore snapshots */
if (strchr(entry.mnt_special, '@') != NULL)
continue;
if ((zhp = zfs_open(g_zfs, entry.mnt_special,
ZFS_TYPE_FILESYSTEM)) == NULL) {
ret = 1;
continue;
}
/*
* Ignore datasets that are excluded/restricted by
* parent pool name.
*/
if (zpool_skip_pool(zfs_get_pool_name(zhp))) {
zfs_close(zhp);
continue;
}
switch (op) {
case OP_SHARE:
verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
nfs_mnt_prop,
sizeof (nfs_mnt_prop),
NULL, NULL, 0, B_FALSE) == 0);
if (strcmp(nfs_mnt_prop, "off") != 0)
break;
verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
nfs_mnt_prop,
sizeof (nfs_mnt_prop),
NULL, NULL, 0, B_FALSE) == 0);
if (strcmp(nfs_mnt_prop, "off") == 0)
continue;
break;
case OP_MOUNT:
/* Ignore legacy mounts */
verify(zfs_prop_get(zhp, ZFS_PROP_MOUNTPOINT,
nfs_mnt_prop,
sizeof (nfs_mnt_prop),
NULL, NULL, 0, B_FALSE) == 0);
if (strcmp(nfs_mnt_prop, "legacy") == 0)
continue;
/* Ignore canmount=noauto mounts */
if (zfs_prop_get_int(zhp, ZFS_PROP_CANMOUNT) ==
ZFS_CANMOUNT_NOAUTO)
continue;
break;
default:
break;
}
node = safe_malloc(sizeof (unshare_unmount_node_t));
node->un_zhp = zhp;
node->un_mountp = safe_strdup(entry.mnt_mountp);
uu_avl_node_init(node, &node->un_avlnode, pool);
if (uu_avl_find(tree, node, NULL, &idx) == NULL) {
uu_avl_insert(tree, node, idx);
} else {
zfs_close(node->un_zhp);
free(node->un_mountp);
free(node);
}
}
(void) fclose(mnttab);
/*
* Walk the AVL tree in reverse, unmounting each filesystem and
* removing it from the AVL tree in the process.
*/
if ((walk = uu_avl_walk_start(tree,
UU_WALK_REVERSE | UU_WALK_ROBUST)) == NULL)
nomem();
while ((node = uu_avl_walk_next(walk)) != NULL) {
const char *mntarg = NULL;
uu_avl_remove(tree, node);
switch (op) {
case OP_SHARE:
if (zfs_unshareall_bytype(node->un_zhp,
node->un_mountp, protocol) != 0)
ret = 1;
break;
case OP_MOUNT:
if (zfs_unmount(node->un_zhp,
mntarg, flags) != 0)
ret = 1;
break;
}
zfs_close(node->un_zhp);
free(node->un_mountp);
free(node);
}
if (op == OP_SHARE)
zfs_commit_shares(protocol);
uu_avl_walk_end(walk);
uu_avl_destroy(tree);
uu_avl_pool_destroy(pool);
} else {
if (argc != 1) {
if (argc == 0)
(void) fprintf(stderr,
gettext("missing filesystem argument\n"));
else
(void) fprintf(stderr,
gettext("too many arguments\n"));
usage(B_FALSE);
}
/*
* We have an argument, but it may be a full path or a ZFS
* filesystem. Pass full paths off to unmount_path() (shared by
* manual_unmount), otherwise open the filesystem and pass to
* zfs_unmount().
*/
if (argv[0][0] == '/')
return (unshare_unmount_path(op, argv[0],
flags, B_FALSE));
if ((zhp = zfs_open(g_zfs, argv[0],
ZFS_TYPE_FILESYSTEM)) == NULL)
return (1);
verify(zfs_prop_get(zhp, op == OP_SHARE ?
ZFS_PROP_SHARENFS : ZFS_PROP_MOUNTPOINT,
nfs_mnt_prop, sizeof (nfs_mnt_prop), NULL,
NULL, 0, B_FALSE) == 0);
switch (op) {
case OP_SHARE:
verify(zfs_prop_get(zhp, ZFS_PROP_SHARENFS,
nfs_mnt_prop,
sizeof (nfs_mnt_prop),
NULL, NULL, 0, B_FALSE) == 0);
verify(zfs_prop_get(zhp, ZFS_PROP_SHARESMB,
sharesmb, sizeof (sharesmb), NULL, NULL,
0, B_FALSE) == 0);
if (strcmp(nfs_mnt_prop, "off") == 0 &&
strcmp(sharesmb, "off") == 0) {
(void) fprintf(stderr, gettext("cannot "
"unshare '%s': legacy share\n"),
zfs_get_name(zhp));
(void) fprintf(stderr, gettext("use "
"exports(5) or smb.conf(5) to unshare "
"this filesystem\n"));
ret = 1;
} else if (!zfs_is_shared(zhp)) {
(void) fprintf(stderr, gettext("cannot "
"unshare '%s': not currently "
"shared\n"), zfs_get_name(zhp));
ret = 1;
} else if (zfs_unshareall(zhp) != 0) {
ret = 1;
}
break;
case OP_MOUNT:
if (strcmp(nfs_mnt_prop, "legacy") == 0) {
(void) fprintf(stderr, gettext("cannot "
"unmount '%s': legacy "
"mountpoint\n"), zfs_get_name(zhp));
(void) fprintf(stderr, gettext("use "
"umount(8) to unmount this "
"filesystem\n"));
ret = 1;
} else if (!zfs_is_mounted(zhp, NULL)) {
(void) fprintf(stderr, gettext("cannot "
"unmount '%s': not currently "
"mounted\n"),
zfs_get_name(zhp));
ret = 1;
} else if (zfs_unmountall(zhp, flags) != 0) {
ret = 1;
}
break;
}
zfs_close(zhp);
}
return (ret);
}
/*
* zfs unmount [-fu] -a
* zfs unmount [-fu] filesystem
*
* Unmount all filesystems, or a specific ZFS filesystem.
*/
static int
zfs_do_unmount(int argc, char **argv)
{
return (unshare_unmount(OP_MOUNT, argc, argv));
}
/*
* zfs unshare -a
* zfs unshare filesystem
*
* Unshare all filesystems, or a specific ZFS filesystem.
*/
static int
zfs_do_unshare(int argc, char **argv)
{
return (unshare_unmount(OP_SHARE, argc, argv));
}
static int
find_command_idx(char *command, int *idx)
{
int i;
for (i = 0; i < NCOMMAND; i++) {
if (command_table[i].name == NULL)
continue;
if (strcmp(command, command_table[i].name) == 0) {
*idx = i;
return (0);
}
}
return (1);
}
static int
zfs_do_diff(int argc, char **argv)
{
zfs_handle_t *zhp;
int flags = 0;
char *tosnap = NULL;
char *fromsnap = NULL;
char *atp, *copy;
int err = 0;
int c;
struct sigaction sa;
while ((c = getopt(argc, argv, "FHth")) != -1) {
switch (c) {
case 'F':
flags |= ZFS_DIFF_CLASSIFY;
break;
case 'H':
flags |= ZFS_DIFF_PARSEABLE;
break;
case 't':
flags |= ZFS_DIFF_TIMESTAMP;
break;
case 'h':
flags |= ZFS_DIFF_NO_MANGLE;
break;
default:
(void) fprintf(stderr,
gettext("invalid option '%c'\n"), optopt);
usage(B_FALSE);
}
}
argc -= optind;
argv += optind;
if (argc < 1) {
(void) fprintf(stderr,
gettext("must provide at least one snapshot name\n"));
usage(B_FALSE);
}
if (argc > 2) {
(void) fprintf(stderr, gettext("too many arguments\n"));
usage(B_FALSE);
}
fromsnap = argv[0];
tosnap = (argc == 2) ? argv[1] : NULL;
copy = NULL;
if (*fromsnap != '@')
copy = strdup(fromsnap);
else if (tosnap)
copy = strdup(tosnap);
if (copy == NULL)
usage(B_FALSE);
if ((atp = strchr(copy, '@')) != NULL)
*atp = '\0';
if ((zhp = zfs_open(g_zfs, copy, ZFS_TYPE_FILESYSTEM)) == NULL) {
free(copy);
return (1);
}
free(copy);
/*
* Ignore SIGPIPE so that the library can give us
* information on any failure
*/
if (sigemptyset(&sa.sa_mask) == -1) {
err = errno;
goto out;
}
sa.sa_flags = 0;
sa.sa_handler = SIG_IGN;
if (sigaction(SIGPIPE, &sa, NULL) == -1) {
err = errno;
goto out;
}
err = zfs_show_diffs(zhp, STDOUT_FILENO, fromsnap, tosnap, flags);
out:
zfs_close(zhp);
return (err != 0);
}
/*
* zfs bookmark <fs@source>|<fs#source> <fs#bookmark>
*
* Creates a bookmark with the given name from the source snapshot
* or creates a copy of an existing source bookmark.
*/
static int
zfs_do_bookmark(int argc, char **argv)
{
char *source, *bookname;
char expbuf[ZFS_MAX_DATASET_NAME_LEN];
int source_type;
nvlist_t *nvl;
int ret = 0;
int c;
/* check options */
while ((c = getopt(argc, argv, "")) != -1) {
switch (c) {
case '?':
(void) fprintf(stderr,
gettext("invalid option '%c'\n"), optopt);
goto usage;
}
}
argc -= optind;
argv += optind;
/* check number of arguments */
if (argc < 1) {
(void) fprintf(stderr, gettext("missing source argument\n"));
goto usage;
}
if (argc < 2) {
(void) fprintf(stderr, gettext("missing bookmark argument\n"));
goto usage;
}
source = argv[0];
bookname = argv[1];
if (strchr(source, '@') == NULL && strchr(source, '#') == NULL) {
(void) fprintf(stderr,
gettext("invalid source name '%s': "
"must contain a '@' or '#'\n"), source);
goto usage;
}
if (strchr(bookname, '#') == NULL) {
(void) fprintf(stderr,
gettext("invalid bookmark name '%s': "
"must contain a '#'\n"), bookname);
goto usage;
}
/*
* expand source or bookname to full path:
* one of them may be specified as short name
*/
{
char **expand;
char *source_short, *bookname_short;
source_short = strpbrk(source, "@#");
bookname_short = strpbrk(bookname, "#");
if (source_short == source &&
bookname_short == bookname) {
(void) fprintf(stderr, gettext(
"either source or bookmark must be specified as "
"full dataset paths"));
goto usage;
} else if (source_short != source &&
bookname_short != bookname) {
expand = NULL;
} else if (source_short != source) {
strlcpy(expbuf, source, sizeof (expbuf));
expand = &bookname;
} else if (bookname_short != bookname) {
strlcpy(expbuf, bookname, sizeof (expbuf));
expand = &source;
} else {
abort();
}
if (expand != NULL) {
*strpbrk(expbuf, "@#") = '\0'; /* dataset name in buf */
(void) strlcat(expbuf, *expand, sizeof (expbuf));
*expand = expbuf;
}
}
/* determine source type */
switch (*strpbrk(source, "@#")) {
case '@': source_type = ZFS_TYPE_SNAPSHOT; break;
case '#': source_type = ZFS_TYPE_BOOKMARK; break;
default: abort();
}
/* test the source exists */
zfs_handle_t *zhp;
zhp = zfs_open(g_zfs, source, source_type);
if (zhp == NULL)
goto usage;
zfs_close(zhp);
nvl = fnvlist_alloc();
fnvlist_add_string(nvl, bookname, source);
ret = lzc_bookmark(nvl, NULL);
fnvlist_free(nvl);
if (ret != 0) {
const char *err_msg = NULL;
char errbuf[1024];
(void) snprintf(errbuf, sizeof (errbuf),
dgettext(TEXT_DOMAIN,
"cannot create bookmark '%s'"), bookname);
switch (ret) {
case EXDEV:
err_msg = "bookmark is in a different pool";
break;
case ZFS_ERR_BOOKMARK_SOURCE_NOT_ANCESTOR:
err_msg = "source is not an ancestor of the "
"new bookmark's dataset";
break;
case EEXIST:
err_msg = "bookmark exists";
break;
case EINVAL:
err_msg = "invalid argument";
break;
case ENOTSUP:
err_msg = "bookmark feature not enabled";
break;
case ENOSPC:
err_msg = "out of space";
break;
case ENOENT:
err_msg = "dataset does not exist";
break;
default:
(void) zfs_standard_error(g_zfs, ret, errbuf);
break;
}
if (err_msg != NULL) {
(void) fprintf(stderr, "%s: %s\n", errbuf,
dgettext(TEXT_DOMAIN, err_msg));
}
}
return (ret != 0);
usage:
usage(B_FALSE);
return (-1);
}
static int
zfs_do_channel_program(int argc, char **argv)
{
int ret, fd, c;
char *progbuf, *filename, *poolname;
size_t progsize, progread;
nvlist_t *outnvl = NULL;
uint64_t instrlimit = ZCP_DEFAULT_INSTRLIMIT;
uint64_t memlimit = ZCP_DEFAULT_MEMLIMIT;
boolean_t sync_flag = B_TRUE, json_output = B_FALSE;
zpool_handle_t *zhp;
/* check options */
while ((c = getopt(argc, argv, "nt:m:j")) != -1) {
switch (c) {
case 't':
case 'm': {
uint64_t arg;
char *endp;
errno = 0;
arg = strtoull(optarg, &endp, 0);
if (errno != 0 || *endp != '\0') {
(void) fprintf(stderr, gettext(
"invalid argument "
"'%s': expected integer\n"), optarg);
goto usage;
}
if (c == 't') {
instrlimit = arg;
} else {
ASSERT3U(c, ==, 'm');
memlimit = arg;
}
break;
}
case 'n': {
sync_flag = B_FALSE;
break;
}
case 'j': {
json_output = B_TRUE;
break;
}
case '?':
(void) fprintf(stderr, gettext("invalid option '%c'\n"),
optopt);
goto usage;
}
}
argc -= optind;
argv += optind;
if (argc < 2) {
(void) fprintf(stderr,
gettext("invalid number of arguments\n"));
goto usage;
}
poolname = argv[0];
filename = argv[1];
if (strcmp(filename, "-") == 0) {
fd = 0;
filename = "standard input";
} else if ((fd = open(filename, O_RDONLY)) < 0) {
(void) fprintf(stderr, gettext("cannot open '%s': %s\n"),
filename, strerror(errno));
return (1);
}
if ((zhp = zpool_open(g_zfs, poolname)) == NULL) {
(void) fprintf(stderr, gettext("cannot open pool '%s'\n"),
poolname);
if (fd != 0)
(void) close(fd);
return (1);
}
zpool_close(zhp);
/*
* Read in the channel program, expanding the program buffer as
* necessary.
*/
progread = 0;
progsize = 1024;
progbuf = safe_malloc(progsize);
do {
ret = read(fd, progbuf + progread, progsize - progread);
progread += ret;
if (progread == progsize && ret > 0) {
progsize *= 2;
progbuf = safe_realloc(progbuf, progsize);
}
} while (ret > 0);
if (fd != 0)
(void) close(fd);
if (ret < 0) {
free(progbuf);
(void) fprintf(stderr,
gettext("cannot read '%s': %s\n"),
filename, strerror(errno));
return (1);
}
progbuf[progread] = '\0';
/*
* Any remaining arguments are passed as arguments to the lua script as
* a string array:
* {
* "argv" -> [ "arg 1", ... "arg n" ],
* }
*/
nvlist_t *argnvl = fnvlist_alloc();
fnvlist_add_string_array(argnvl, ZCP_ARG_CLIARGV,
(const char **)argv + 2, argc - 2);
if (sync_flag) {
ret = lzc_channel_program(poolname, progbuf,
instrlimit, memlimit, argnvl, &outnvl);
} else {
ret = lzc_channel_program_nosync(poolname, progbuf,
instrlimit, memlimit, argnvl, &outnvl);
}
if (ret != 0) {
/*
* On error, report the error message handed back by lua if one
* exists. Otherwise, generate an appropriate error message,
* falling back on strerror() for an unexpected return code.
*/
char *errstring = NULL;
const char *msg = gettext("Channel program execution failed");
uint64_t instructions = 0;
if (outnvl != NULL && nvlist_exists(outnvl, ZCP_RET_ERROR)) {
(void) nvlist_lookup_string(outnvl,
ZCP_RET_ERROR, &errstring);
if (errstring == NULL)
errstring = strerror(ret);
if (ret == ETIME) {
(void) nvlist_lookup_uint64(outnvl,
ZCP_ARG_INSTRLIMIT, &instructions);
}
} else {
switch (ret) {
case EINVAL:
errstring =
"Invalid instruction or memory limit.";
break;
case ENOMEM:
errstring = "Return value too large.";
break;
case ENOSPC:
errstring = "Memory limit exhausted.";
break;
case ETIME:
errstring = "Timed out.";
break;
case EPERM:
errstring = "Permission denied. Channel "
"programs must be run as root.";
break;
default:
(void) zfs_standard_error(g_zfs, ret, msg);
}
}
if (errstring != NULL)
(void) fprintf(stderr, "%s:\n%s\n", msg, errstring);
if (ret == ETIME && instructions != 0)
(void) fprintf(stderr,
gettext("%llu Lua instructions\n"),
(u_longlong_t)instructions);
} else {
if (json_output) {
(void) nvlist_print_json(stdout, outnvl);
} else if (nvlist_empty(outnvl)) {
(void) fprintf(stdout, gettext("Channel program fully "
"executed and did not produce output.\n"));
} else {
(void) fprintf(stdout, gettext("Channel program fully "
"executed and produced output:\n"));
dump_nvlist(outnvl, 4);
}
}
free(progbuf);
fnvlist_free(outnvl);
fnvlist_free(argnvl);
return (ret != 0);
usage:
usage(B_FALSE);
return (-1);
}
typedef struct loadkey_cbdata {
boolean_t cb_loadkey;
boolean_t cb_recursive;
boolean_t cb_noop;
char *cb_keylocation;
uint64_t cb_numfailed;
uint64_t cb_numattempted;
} loadkey_cbdata_t;
static int
load_key_callback(zfs_handle_t *zhp, void *data)
{
int ret;
boolean_t is_encroot;
loadkey_cbdata_t *cb = data;
uint64_t keystatus = zfs_prop_get_int(zhp, ZFS_PROP_KEYSTATUS);
/*
* If we are working recursively, we want to skip loading / unloading
* keys for non-encryption roots and datasets whose keys are already
* in the desired end-state.
*/
if (cb->cb_recursive) {
ret = zfs_crypto_get_encryption_root(zhp, &is_encroot, NULL);
if (ret != 0)
return (ret);
if (!is_encroot)
return (0);
if ((cb->cb_loadkey && keystatus == ZFS_KEYSTATUS_AVAILABLE) ||
(!cb->cb_loadkey && keystatus == ZFS_KEYSTATUS_UNAVAILABLE))
return (0);
}
cb->cb_numattempted++;
if (cb->cb_loadkey)
ret = zfs_crypto_load_key(zhp, cb->cb_noop, cb->cb_keylocation);
else
ret = zfs_crypto_unload_key(zhp);
if (ret != 0) {
cb->cb_numfailed++;
return (ret);
}
return (0);
}
static int
load_unload_keys(int argc, char **argv, boolean_t loadkey)
{
int c, ret = 0, flags = 0;
boolean_t do_all = B_FALSE;
loadkey_cbdata_t cb = { 0 };
cb.cb_loadkey = loadkey;
while ((c = getopt(argc, argv, "anrL:")) != -1) {
/* noop and alternate keylocations only apply to zfs load-key */
if (loadkey) {
switch (c) {
case 'n':
cb.cb_noop = B_TRUE;
continue;
case 'L':
cb.cb_keylocation = optarg;
continue;
default:
break;
}
}
switch (c) {
case 'a':
do_all = B_TRUE;
cb.cb_recursive = B_TRUE;
break;
case 'r':
flags |= ZFS_ITER_RECURSE;
cb.cb_recursive = B_TRUE;
break;
default:
(void) fprintf(stderr,
gettext("invalid option '%c'\n"), optopt);
usage(B_FALSE);
}
}
argc -= optind;
argv += optind;
if (!do_all && argc == 0) {
(void) fprintf(stderr,
gettext("Missing dataset argument or -a option\n"));
usage(B_FALSE);
}
if (do_all && argc != 0) {
(void) fprintf(stderr,
gettext("Cannot specify dataset with -a option\n"));
usage(B_FALSE);
}
if (cb.cb_recursive && cb.cb_keylocation != NULL &&
strcmp(cb.cb_keylocation, "prompt") != 0) {
(void) fprintf(stderr, gettext("alternate keylocation may only "
"be 'prompt' with -r or -a\n"));
usage(B_FALSE);
}
ret = zfs_for_each(argc, argv, flags,
ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, NULL, NULL, 0,
load_key_callback, &cb);
if (cb.cb_noop || (cb.cb_recursive && cb.cb_numattempted != 0)) {
(void) printf(gettext("%llu / %llu key(s) successfully %s\n"),
(u_longlong_t)(cb.cb_numattempted - cb.cb_numfailed),
(u_longlong_t)cb.cb_numattempted,
loadkey ? (cb.cb_noop ? "verified" : "loaded") :
"unloaded");
}
if (cb.cb_numfailed != 0)
ret = -1;
return (ret);
}
static int
zfs_do_load_key(int argc, char **argv)
{
return (load_unload_keys(argc, argv, B_TRUE));
}
static int
zfs_do_unload_key(int argc, char **argv)
{
return (load_unload_keys(argc, argv, B_FALSE));
}
static int
zfs_do_change_key(int argc, char **argv)
{
int c, ret;
uint64_t keystatus;
boolean_t loadkey = B_FALSE, inheritkey = B_FALSE;
zfs_handle_t *zhp = NULL;
nvlist_t *props = fnvlist_alloc();
while ((c = getopt(argc, argv, "lio:")) != -1) {
switch (c) {
case 'l':
loadkey = B_TRUE;
break;
case 'i':
inheritkey = B_TRUE;
break;
case 'o':
if (!parseprop(props, optarg)) {
nvlist_free(props);
return (1);
}
break;
default:
(void) fprintf(stderr,
gettext("invalid option '%c'\n"), optopt);
usage(B_FALSE);
}
}
if (inheritkey && !nvlist_empty(props)) {
(void) fprintf(stderr,
gettext("Properties not allowed for inheriting\n"));
usage(B_FALSE);
}
argc -= optind;
argv += optind;
if (argc < 1) {
(void) fprintf(stderr, gettext("Missing dataset argument\n"));
usage(B_FALSE);
}
if (argc > 1) {
(void) fprintf(stderr, gettext("Too many arguments\n"));
usage(B_FALSE);
}
zhp = zfs_open(g_zfs, argv[argc - 1],
ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME);
if (zhp == NULL)
usage(B_FALSE);
if (loadkey) {
keystatus = zfs_prop_get_int(zhp, ZFS_PROP_KEYSTATUS);
if (keystatus != ZFS_KEYSTATUS_AVAILABLE) {
ret = zfs_crypto_load_key(zhp, B_FALSE, NULL);
if (ret != 0) {
nvlist_free(props);
zfs_close(zhp);
return (-1);
}
}
/* refresh the properties so the new keystatus is visible */
zfs_refresh_properties(zhp);
}
ret = zfs_crypto_rewrap(zhp, props, inheritkey);
if (ret != 0) {
nvlist_free(props);
zfs_close(zhp);
return (-1);
}
nvlist_free(props);
zfs_close(zhp);
return (0);
}
/*
* 1) zfs project [-d|-r] <file|directory ...>
* List project ID and inherit flag of file(s) or directories.
* -d: List the directory itself, not its children.
* -r: List subdirectories recursively.
*
* 2) zfs project -C [-k] [-r] <file|directory ...>
* Clear project inherit flag and/or ID on the file(s) or directories.
* -k: Keep the project ID unchanged. If not specified, the project ID
* will be reset as zero.
* -r: Clear on subdirectories recursively.
*
* 3) zfs project -c [-0] [-d|-r] [-p id] <file|directory ...>
* Check project ID and inherit flag on the file(s) or directories,
* report the outliers.
* -0: Print file name followed by a NUL instead of newline.
* -d: Check the directory itself, not its children.
* -p: Specify the referenced ID for comparing with the target file(s)
* or directories' project IDs. If not specified, the target (top)
* directory's project ID will be used as the referenced one.
* -r: Check subdirectories recursively.
*
* 4) zfs project [-p id] [-r] [-s] <file|directory ...>
* Set project ID and/or inherit flag on the file(s) or directories.
* -p: Set the project ID as the given id.
* -r: Set on subdirectories recursively. If not specify "-p" option,
* it will use top-level directory's project ID as the given id,
* then set both project ID and inherit flag on all descendants
* of the top-level directory.
* -s: Set project inherit flag.
*/
static int
zfs_do_project(int argc, char **argv)
{
zfs_project_control_t zpc = {
.zpc_expected_projid = ZFS_INVALID_PROJID,
.zpc_op = ZFS_PROJECT_OP_DEFAULT,
.zpc_dironly = B_FALSE,
.zpc_keep_projid = B_FALSE,
.zpc_newline = B_TRUE,
.zpc_recursive = B_FALSE,
.zpc_set_flag = B_FALSE,
};
int ret = 0, c;
if (argc < 2)
usage(B_FALSE);
while ((c = getopt(argc, argv, "0Ccdkp:rs")) != -1) {
switch (c) {
case '0':
zpc.zpc_newline = B_FALSE;
break;
case 'C':
if (zpc.zpc_op != ZFS_PROJECT_OP_DEFAULT) {
(void) fprintf(stderr, gettext("cannot "
"specify '-C' '-c' '-s' together\n"));
usage(B_FALSE);
}
zpc.zpc_op = ZFS_PROJECT_OP_CLEAR;
break;
case 'c':
if (zpc.zpc_op != ZFS_PROJECT_OP_DEFAULT) {
(void) fprintf(stderr, gettext("cannot "
"specify '-C' '-c' '-s' together\n"));
usage(B_FALSE);
}
zpc.zpc_op = ZFS_PROJECT_OP_CHECK;
break;
case 'd':
zpc.zpc_dironly = B_TRUE;
/* overwrite "-r" option */
zpc.zpc_recursive = B_FALSE;
break;
case 'k':
zpc.zpc_keep_projid = B_TRUE;
break;
case 'p': {
char *endptr;
errno = 0;
zpc.zpc_expected_projid = strtoull(optarg, &endptr, 0);
if (errno != 0 || *endptr != '\0') {
(void) fprintf(stderr,
gettext("project ID must be less than "
"%u\n"), UINT32_MAX);
usage(B_FALSE);
}
if (zpc.zpc_expected_projid >= UINT32_MAX) {
(void) fprintf(stderr,
gettext("invalid project ID\n"));
usage(B_FALSE);
}
break;
}
case 'r':
zpc.zpc_recursive = B_TRUE;
/* overwrite "-d" option */
zpc.zpc_dironly = B_FALSE;
break;
case 's':
if (zpc.zpc_op != ZFS_PROJECT_OP_DEFAULT) {
(void) fprintf(stderr, gettext("cannot "
"specify '-C' '-c' '-s' together\n"));
usage(B_FALSE);
}
zpc.zpc_set_flag = B_TRUE;
zpc.zpc_op = ZFS_PROJECT_OP_SET;
break;
default:
(void) fprintf(stderr, gettext("invalid option '%c'\n"),
optopt);
usage(B_FALSE);
}
}
if (zpc.zpc_op == ZFS_PROJECT_OP_DEFAULT) {
if (zpc.zpc_expected_projid != ZFS_INVALID_PROJID)
zpc.zpc_op = ZFS_PROJECT_OP_SET;
else
zpc.zpc_op = ZFS_PROJECT_OP_LIST;
}
switch (zpc.zpc_op) {
case ZFS_PROJECT_OP_LIST:
if (zpc.zpc_keep_projid) {
(void) fprintf(stderr,
gettext("'-k' is only valid together with '-C'\n"));
usage(B_FALSE);
}
if (!zpc.zpc_newline) {
(void) fprintf(stderr,
gettext("'-0' is only valid together with '-c'\n"));
usage(B_FALSE);
}
break;
case ZFS_PROJECT_OP_CHECK:
if (zpc.zpc_keep_projid) {
(void) fprintf(stderr,
gettext("'-k' is only valid together with '-C'\n"));
usage(B_FALSE);
}
break;
case ZFS_PROJECT_OP_CLEAR:
if (zpc.zpc_dironly) {
(void) fprintf(stderr,
gettext("'-d' is useless together with '-C'\n"));
usage(B_FALSE);
}
if (!zpc.zpc_newline) {
(void) fprintf(stderr,
gettext("'-0' is only valid together with '-c'\n"));
usage(B_FALSE);
}
if (zpc.zpc_expected_projid != ZFS_INVALID_PROJID) {
(void) fprintf(stderr,
gettext("'-p' is useless together with '-C'\n"));
usage(B_FALSE);
}
break;
case ZFS_PROJECT_OP_SET:
if (zpc.zpc_dironly) {
(void) fprintf(stderr,
gettext("'-d' is useless for set project ID and/or "
"inherit flag\n"));
usage(B_FALSE);
}
if (zpc.zpc_keep_projid) {
(void) fprintf(stderr,
gettext("'-k' is only valid together with '-C'\n"));
usage(B_FALSE);
}
if (!zpc.zpc_newline) {
(void) fprintf(stderr,
gettext("'-0' is only valid together with '-c'\n"));
usage(B_FALSE);
}
break;
default:
ASSERT(0);
break;
}
argv += optind;
argc -= optind;
if (argc == 0) {
(void) fprintf(stderr,
gettext("missing file or directory target(s)\n"));
usage(B_FALSE);
}
for (int i = 0; i < argc; i++) {
int err;
err = zfs_project_handle(argv[i], &zpc);
if (err && !ret)
ret = err;
}
return (ret);
}
static int
zfs_do_wait(int argc, char **argv)
{
boolean_t enabled[ZFS_WAIT_NUM_ACTIVITIES];
int error, i;
int c;
/* By default, wait for all types of activity. */
for (i = 0; i < ZFS_WAIT_NUM_ACTIVITIES; i++)
enabled[i] = B_TRUE;
while ((c = getopt(argc, argv, "t:")) != -1) {
switch (c) {
case 't':
/* Reset activities array */
memset(&enabled, 0, sizeof (enabled));
for (char *tok; (tok = strsep(&optarg, ",")); ) {
static const char *const col_subopts[
ZFS_WAIT_NUM_ACTIVITIES] = { "deleteq" };
for (i = 0; i < ARRAY_SIZE(col_subopts); ++i)
if (strcmp(tok, col_subopts[i]) == 0) {
enabled[i] = B_TRUE;
goto found;
}
(void) fprintf(stderr,
gettext("invalid activity '%s'\n"), tok);
usage(B_FALSE);
found:;
}
break;
case '?':
(void) fprintf(stderr, gettext("invalid option '%c'\n"),
optopt);
usage(B_FALSE);
}
}
argv += optind;
argc -= optind;
if (argc < 1) {
(void) fprintf(stderr, gettext("missing 'filesystem' "
"argument\n"));
usage(B_FALSE);
}
if (argc > 1) {
(void) fprintf(stderr, gettext("too many arguments\n"));
usage(B_FALSE);
}
zfs_handle_t *zhp = zfs_open(g_zfs, argv[0], ZFS_TYPE_FILESYSTEM);
if (zhp == NULL)
return (1);
for (;;) {
boolean_t missing = B_FALSE;
boolean_t any_waited = B_FALSE;
for (int i = 0; i < ZFS_WAIT_NUM_ACTIVITIES; i++) {
boolean_t waited;
if (!enabled[i])
continue;
error = zfs_wait_status(zhp, i, &missing, &waited);
if (error != 0 || missing)
break;
any_waited = (any_waited || waited);
}
if (error != 0 || missing || !any_waited)
break;
}
zfs_close(zhp);
return (error);
}
/*
* Display version message
*/
static int
zfs_do_version(int argc, char **argv)
{
(void) argc, (void) argv;
if (zfs_version_print() == -1)
return (1);
return (0);
}
int
main(int argc, char **argv)
{
int ret = 0;
int i = 0;
char *cmdname;
char **newargv;
(void) setlocale(LC_ALL, "");
(void) setlocale(LC_NUMERIC, "C");
(void) textdomain(TEXT_DOMAIN);
opterr = 0;
/*
* Make sure the user has specified some command.
*/
if (argc < 2) {
(void) fprintf(stderr, gettext("missing command\n"));
usage(B_FALSE);
}
cmdname = argv[1];
/*
* The 'umount' command is an alias for 'unmount'
*/
if (strcmp(cmdname, "umount") == 0)
cmdname = "unmount";
/*
* The 'recv' command is an alias for 'receive'
*/
if (strcmp(cmdname, "recv") == 0)
cmdname = "receive";
/*
* The 'snap' command is an alias for 'snapshot'
*/
if (strcmp(cmdname, "snap") == 0)
cmdname = "snapshot";
/*
* Special case '-?'
*/
if ((strcmp(cmdname, "-?") == 0) ||
(strcmp(cmdname, "--help") == 0))
usage(B_TRUE);
/*
* Special case '-V|--version'
*/
if ((strcmp(cmdname, "-V") == 0) || (strcmp(cmdname, "--version") == 0))
return (zfs_do_version(argc, argv));
if ((g_zfs = libzfs_init()) == NULL) {
(void) fprintf(stderr, "%s\n", libzfs_error_init(errno));
return (1);
}
zfs_save_arguments(argc, argv, history_str, sizeof (history_str));
libzfs_print_on_error(g_zfs, B_TRUE);
/*
* Many commands modify input strings for string parsing reasons.
* We create a copy to protect the original argv.
*/
newargv = safe_malloc((argc + 1) * sizeof (newargv[0]));
for (i = 0; i < argc; i++)
newargv[i] = strdup(argv[i]);
newargv[argc] = NULL;
/*
* Run the appropriate command.
*/
libzfs_mnttab_cache(g_zfs, B_TRUE);
if (find_command_idx(cmdname, &i) == 0) {
current_command = &command_table[i];
ret = command_table[i].func(argc - 1, newargv + 1);
} else if (strchr(cmdname, '=') != NULL) {
verify(find_command_idx("set", &i) == 0);
current_command = &command_table[i];
ret = command_table[i].func(argc, newargv);
} else {
(void) fprintf(stderr, gettext("unrecognized "
"command '%s'\n"), cmdname);
usage(B_FALSE);
ret = 1;
}
for (i = 0; i < argc; i++)
free(newargv[i]);
free(newargv);
if (ret == 0 && log_history)
(void) zpool_log_history(g_zfs, history_str);
libzfs_fini(g_zfs);
/*
* The 'ZFS_ABORT' environment variable causes us to dump core on exit
* for the purposes of running ::findleaks.
*/
if (getenv("ZFS_ABORT") != NULL) {
(void) printf("dumping core by request\n");
abort();
}
return (ret);
}
#ifdef __FreeBSD__
#include <sys/jail.h>
#include <jail.h>
/*
* Attach/detach the given dataset to/from the given jail
*/
static int
zfs_do_jail_impl(int argc, char **argv, boolean_t attach)
{
zfs_handle_t *zhp;
int jailid, ret;
/* check number of arguments */
if (argc < 3) {
(void) fprintf(stderr, gettext("missing argument(s)\n"));
usage(B_FALSE);
}
if (argc > 3) {
(void) fprintf(stderr, gettext("too many arguments\n"));
usage(B_FALSE);
}
jailid = jail_getid(argv[1]);
if (jailid < 0) {
(void) fprintf(stderr, gettext("invalid jail id or name\n"));
usage(B_FALSE);
}
zhp = zfs_open(g_zfs, argv[2], ZFS_TYPE_FILESYSTEM);
if (zhp == NULL)
return (1);
ret = (zfs_jail(zhp, jailid, attach) != 0);
zfs_close(zhp);
return (ret);
}
/*
* zfs jail jailid filesystem
*
* Attach the given dataset to the given jail
*/
static int
zfs_do_jail(int argc, char **argv)
{
return (zfs_do_jail_impl(argc, argv, B_TRUE));
}
/*
* zfs unjail jailid filesystem
*
* Detach the given dataset from the given jail
*/
static int
zfs_do_unjail(int argc, char **argv)
{
return (zfs_do_jail_impl(argc, argv, B_FALSE));
}
#endif
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