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OpenZFS restructuring - zfs_ioctl

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Refactor the zfs ioctls in to platform dependent and independent bits.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Sean Eric Fagan <sef@ixsystems.com>
Signed-off-by: Matthew Macy <mmacy@FreeBSD.org>
Signed-off-by: Ryan Moeller <ryan@ixsystems.com>
Closes #9301
This commit is contained in:
Matthew Macy 2019-09-27 10:46:28 -07:00 committed by Brian Behlendorf
parent 3768db24ab
commit 7bb0c29468
9 changed files with 511 additions and 337 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
include/os/linux/zfs/sys/zfs_vfsops.h
View File

@ -194,8 +194,6 @@ typedef struct zfid_long {
#define SHORT_FID_LEN (sizeof (zfid_short_t) - sizeof (uint16_t))
#define LONG_FID_LEN (sizeof (zfid_long_t) - sizeof (uint16_t))
extern uint_t zfs_fsyncer_key;
extern int zfs_suspend_fs(zfsvfs_t *zfsvfs);
extern int zfs_resume_fs(zfsvfs_t *zfsvfs, struct dsl_dataset *ds);
extern int zfs_end_fs(zfsvfs_t *zfsvfs, struct dsl_dataset *ds);

1
include/sys/Makefile.am
View File

@ -124,6 +124,7 @@ COMMON_H = \
KERNEL_H = \
$(top_srcdir)/include/sys/zfs_ioctl.h \
$(top_srcdir)/include/sys/zfs_ioctl_impl.h \
$(top_srcdir)/include/sys/zfs_onexit.h \
$(top_srcdir)/include/sys/zvol.h \
$(top_srcdir)/include/sys/zvol_impl.h

2
include/sys/rrwlock.h
View File

@ -39,6 +39,8 @@ extern "C" {
#include <sys/zfs_context.h>
#include <sys/refcount.h>
extern uint_t rrw_tsd_key;
/*
* A reader-writer lock implementation that allows re-entrant reads, but
* still gives writers priority on "new" reads.

3
include/sys/zfs_ioctl.h
View File

@ -549,6 +549,9 @@ extern void *zfsdev_get_state(minor_t minor, enum zfsdev_state_type which);
extern int zfsdev_getminor(struct file *filp, minor_t *minorp);
extern minor_t zfsdev_minor_alloc(void);
extern uint_t zfs_fsyncer_key;
extern uint_t zfs_allow_log_key;
#endif /* _KERNEL */
#ifdef __cplusplus

93
include/sys/zfs_ioctl_impl.h Normal file
View File

@ -0,0 +1,93 @@
/*
* 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
*/
#ifndef _ZFS_IOCTL_IMPL_H_
#define _ZFS_IOCTL_IMPL_H_
extern kmutex_t zfsdev_state_lock;
extern zfsdev_state_t *zfsdev_state_list;
typedef int zfs_ioc_legacy_func_t(zfs_cmd_t *);
typedef int zfs_ioc_func_t(const char *, nvlist_t *, nvlist_t *);
typedef int zfs_secpolicy_func_t(zfs_cmd_t *, nvlist_t *, cred_t *);
typedef enum {
POOL_CHECK_NONE = 1 << 0,
POOL_CHECK_SUSPENDED = 1 << 1,
POOL_CHECK_READONLY = 1 << 2,
} zfs_ioc_poolcheck_t;
typedef enum {
NO_NAME,
POOL_NAME,
DATASET_NAME,
ENTITY_NAME
} zfs_ioc_namecheck_t;
/*
* IOC Keys are used to document and validate user->kernel interface inputs.
* See zfs_keys_recv_new for an example declaration. Any key name that is not
* listed will be rejected as input.
*
* The keyname 'optional' is always allowed, and must be an nvlist if present.
* Arguments which older kernels can safely ignore can be placed under the
* "optional" key.
*
* When adding new keys to an existing ioc for new functionality, consider:
* - adding an entry into zfs_sysfs.c zfs_features[] list
* - updating the libzfs_input_check.c test utility
*
* Note: in the ZK_WILDCARDLIST case, the name serves as documentation
* for the expected name (bookmark, snapshot, property, etc) but there
* is no validation in the preflight zfs_check_input_nvpairs() check.
*/
typedef enum {
ZK_OPTIONAL = 1 << 0, /* pair is optional */
ZK_WILDCARDLIST = 1 << 1, /* one or more unspecified key names */
} ioc_key_flag_t;
typedef struct zfs_ioc_key {
const char *zkey_name;
data_type_t zkey_type;
ioc_key_flag_t zkey_flags;
} zfs_ioc_key_t;
int zfs_secpolicy_config(zfs_cmd_t *, nvlist_t *, cred_t *);
void zfs_ioctl_register_dataset_nolog(zfs_ioc_t, zfs_ioc_legacy_func_t *,
zfs_secpolicy_func_t *, zfs_ioc_poolcheck_t);
void zfs_ioctl_register(const char *, zfs_ioc_t, zfs_ioc_func_t *,
zfs_secpolicy_func_t *, zfs_ioc_namecheck_t, zfs_ioc_poolcheck_t,
boolean_t, boolean_t, const zfs_ioc_key_t *, size_t);
void zfs_ioctl_init_os(void);
int zfs_vfs_ref(zfsvfs_t **);
long zfsdev_ioctl_common(uint_t, unsigned long);
int zfsdev_attach(void);
void zfsdev_detach(void);
int zfs_kmod_init(void);
void zfs_kmod_fini(void);
#endif

1
module/os/linux/zfs/Makefile.in
View File

@ -22,6 +22,7 @@ $(MODULE)-objs += ../os/linux/zfs/zfs_acl.o
$(MODULE)-objs += ../os/linux/zfs/zfs_ctldir.o
$(MODULE)-objs += ../os/linux/zfs/zfs_debug.o
$(MODULE)-objs += ../os/linux/zfs/zfs_dir.o
$(MODULE)-objs += ../os/linux/zfs/zfs_ioctl_os.o
$(MODULE)-objs += ../os/linux/zfs/zfs_sysfs.o
$(MODULE)-objs += ../os/linux/zfs/zfs_vfsops.o
$(MODULE)-objs += ../os/linux/zfs/zfs_vnops.o

322
module/os/linux/zfs/zfs_ioctl_os.c Normal file
View File

@ -0,0 +1,322 @@
/*
* 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.
* Portions Copyright 2011 Martin Matuska
* Copyright 2015, OmniTI Computer Consulting, Inc. All rights reserved.
* Portions Copyright 2012 Pawel Jakub Dawidek <pawel@dawidek.net>
* Copyright (c) 2014, 2016 Joyent, Inc. All rights reserved.
* Copyright 2016 Nexenta Systems, Inc. All rights reserved.
* Copyright (c) 2014, Joyent, Inc. All rights reserved.
* Copyright (c) 2011, 2018 by Delphix. All rights reserved.
* Copyright (c) 2013 by Saso Kiselkov. All rights reserved.
* Copyright (c) 2013 Steven Hartland. All rights reserved.
* Copyright (c) 2014 Integros [integros.com]
* Copyright 2016 Toomas Soome <tsoome@me.com>
* Copyright (c) 2016 Actifio, Inc. All rights reserved.
* Copyright (c) 2018, loli10K <ezomori.nozomu@gmail.com>. All rights reserved.
* Copyright 2017 RackTop Systems.
* Copyright (c) 2017 Open-E, Inc. All Rights Reserved.
* Copyright (c) 2019 Datto Inc.
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/errno.h>
#include <sys/uio.h>
#include <sys/file.h>
#include <sys/kmem.h>
#include <sys/stat.h>
#include <sys/zfs_ioctl.h>
#include <sys/zfs_vfsops.h>
#include <sys/zap.h>
#include <sys/spa.h>
#include <sys/nvpair.h>
#include <sys/fs/zfs.h>
#include <sys/zfs_ctldir.h>
#include <sys/zfs_dir.h>
#include <sys/zfs_onexit.h>
#include <sys/zvol.h>
#include <sys/fm/util.h>
#include <sys/dsl_crypt.h>
#include <sys/zfs_ioctl_impl.h>
#include <sys/zfs_sysfs.h>
#include <linux/miscdevice.h>
#include <linux/slab.h>
int
zfs_vfs_ref(zfsvfs_t **zfvp)
{
if (*zfvp == NULL || (*zfvp)->z_sb == NULL ||
!atomic_inc_not_zero(&((*zfvp)->z_sb->s_active))) {
return (SET_ERROR(ESRCH));
}
return (0);
}
static int
zfsdev_state_init(struct file *filp)
{
zfsdev_state_t *zs, *zsprev = NULL;
minor_t minor;
boolean_t newzs = B_FALSE;
ASSERT(MUTEX_HELD(&zfsdev_state_lock));
minor = zfsdev_minor_alloc();
if (minor == 0)
return (SET_ERROR(ENXIO));
for (zs = zfsdev_state_list; zs != NULL; zs = zs->zs_next) {
if (zs->zs_minor == -1)
break;
zsprev = zs;
}
if (!zs) {
zs = kmem_zalloc(sizeof (zfsdev_state_t), KM_SLEEP);
newzs = B_TRUE;
}
zs->zs_file = filp;
filp->private_data = zs;
zfs_onexit_init((zfs_onexit_t **)&zs->zs_onexit);
zfs_zevent_init((zfs_zevent_t **)&zs->zs_zevent);
/*
* In order to provide for lock-free concurrent read access
* to the minor list in zfsdev_get_state_impl(), new entries
* must be completely written before linking them into the
* list whereas existing entries are already linked; the last
* operation must be updating zs_minor (from -1 to the new
* value).
*/
if (newzs) {
zs->zs_minor = minor;
smp_wmb();
zsprev->zs_next = zs;
} else {
smp_wmb();
zs->zs_minor = minor;
}
return (0);
}
static int
zfsdev_state_destroy(struct file *filp)
{
zfsdev_state_t *zs;
ASSERT(MUTEX_HELD(&zfsdev_state_lock));
ASSERT(filp->private_data != NULL);
zs = filp->private_data;
zs->zs_minor = -1;
zfs_onexit_destroy(zs->zs_onexit);
zfs_zevent_destroy(zs->zs_zevent);
return (0);
}
static int
zfsdev_open(struct inode *ino, struct file *filp)
{
int error;
mutex_enter(&zfsdev_state_lock);
error = zfsdev_state_init(filp);
mutex_exit(&zfsdev_state_lock);
return (-error);
}
static int
zfsdev_release(struct inode *ino, struct file *filp)
{
int error;
mutex_enter(&zfsdev_state_lock);
error = zfsdev_state_destroy(filp);
mutex_exit(&zfsdev_state_lock);
return (-error);
}
static long
zfsdev_ioctl(struct file *filp, unsigned cmd, unsigned long arg)
{
uint_t vecnum;
vecnum = cmd - ZFS_IOC_FIRST;
return (zfsdev_ioctl_common(vecnum, arg));
}
int
zfsdev_getminor(struct file *filp, minor_t *minorp)
{
zfsdev_state_t *zs, *fpd;
ASSERT(filp != NULL);
ASSERT(!MUTEX_HELD(&zfsdev_state_lock));
fpd = filp->private_data;
if (fpd == NULL)
return (SET_ERROR(EBADF));
mutex_enter(&zfsdev_state_lock);
for (zs = zfsdev_state_list; zs != NULL; zs = zs->zs_next) {
if (zs->zs_minor == -1)
continue;
if (fpd == zs) {
*minorp = fpd->zs_minor;
mutex_exit(&zfsdev_state_lock);
return (0);
}
}
mutex_exit(&zfsdev_state_lock);
return (SET_ERROR(EBADF));
}
void
zfs_ioctl_init_os(void)
{
}
#ifdef CONFIG_COMPAT
static long
zfsdev_compat_ioctl(struct file *filp, unsigned cmd, unsigned long arg)
{
return (zfsdev_ioctl(filp, cmd, arg));
}
#else
#define zfsdev_compat_ioctl NULL
#endif
static const struct file_operations zfsdev_fops = {
.open = zfsdev_open,
.release = zfsdev_release,
.unlocked_ioctl = zfsdev_ioctl,
.compat_ioctl = zfsdev_compat_ioctl,
.owner = THIS_MODULE,
};
static struct miscdevice zfs_misc = {
.minor = ZFS_DEVICE_MINOR,
.name = ZFS_DRIVER,
.fops = &zfsdev_fops,
};
MODULE_ALIAS_MISCDEV(ZFS_DEVICE_MINOR);
MODULE_ALIAS("devname:zfs");
int
zfsdev_attach(void)
{
int error;
error = misc_register(&zfs_misc);
if (error == -EBUSY) {
/*
* Fallback to dynamic minor allocation in the event of a
* collision with a reserved minor in linux/miscdevice.h.
* In this case the kernel modules must be manually loaded.
*/
printk(KERN_INFO "ZFS: misc_register() with static minor %d "
"failed %d, retrying with MISC_DYNAMIC_MINOR\n",
ZFS_DEVICE_MINOR, error);
zfs_misc.minor = MISC_DYNAMIC_MINOR;
error = misc_register(&zfs_misc);
}
if (error)
printk(KERN_INFO "ZFS: misc_register() failed %d\n", error);
return (error);
}
void
zfsdev_detach(void)
{
misc_deregister(&zfs_misc);
}
#ifdef DEBUG
#define ZFS_DEBUG_STR " (DEBUG mode)"
#else
#define ZFS_DEBUG_STR ""
#endif
static int __init
_init(void)
{
int error;
if ((error = zfs_kmod_init()) != 0) {
printk(KERN_NOTICE "ZFS: Failed to Load ZFS Filesystem v%s-%s%s"
", rc = %d\n", ZFS_META_VERSION, ZFS_META_RELEASE,
ZFS_DEBUG_STR, error);
return (-error);
}
zfs_sysfs_init();
printk(KERN_NOTICE "ZFS: Loaded module v%s-%s%s, "
"ZFS pool version %s, ZFS filesystem version %s\n",
ZFS_META_VERSION, ZFS_META_RELEASE, ZFS_DEBUG_STR,
SPA_VERSION_STRING, ZPL_VERSION_STRING);
#ifndef CONFIG_FS_POSIX_ACL
printk(KERN_NOTICE "ZFS: Posix ACLs disabled by kernel\n");
#endif /* CONFIG_FS_POSIX_ACL */
return (0);
}
static void __exit
_fini(void)
{
zfs_sysfs_fini();
zfs_kmod_fini();
printk(KERN_NOTICE "ZFS: Unloaded module v%s-%s%s\n",
ZFS_META_VERSION, ZFS_META_RELEASE, ZFS_DEBUG_STR);
}
#if defined(_KERNEL)
module_init(_init);
module_exit(_fini);
MODULE_DESCRIPTION("ZFS");
MODULE_AUTHOR(ZFS_META_AUTHOR);
MODULE_LICENSE(ZFS_META_LICENSE);
MODULE_VERSION(ZFS_META_VERSION "-" ZFS_META_RELEASE);
#endif

414
module/zfs/zfs_ioctl.c
View File

@ -192,6 +192,7 @@
#include <sys/dsl_scan.h>
#include <sys/fm/util.h>
#include <sys/dsl_crypt.h>
#include <sys/rrwlock.h>
#include <sys/dmu_recv.h>
#include <sys/dmu_send.h>
@ -203,14 +204,10 @@
#include <sys/zcp.h>
#include <sys/zio_checksum.h>
#include <sys/vdev_removal.h>
#include <sys/zfs_sysfs.h>
#include <sys/vdev_impl.h>
#include <sys/vdev_initialize.h>
#include <sys/vdev_trim.h>
#include <linux/miscdevice.h>
#include <linux/slab.h>
#include "zfs_namecheck.h"
#include "zfs_prop.h"
#include "zfs_deleg.h"
@ -218,12 +215,7 @@
#include <sys/lua/lua.h>
#include <sys/lua/lauxlib.h>
/*
* Limit maximum nvlist size. We don't want users passing in insane values
* for zc->zc_nvlist_src_size, since we will need to allocate that much memory.
*/
#define MAX_NVLIST_SRC_SIZE KMALLOC_MAX_SIZE
#include <sys/zfs_ioctl_impl.h>
kmutex_t zfsdev_state_lock;
zfsdev_state_t *zfsdev_state_list;
@ -231,58 +223,18 @@ zfsdev_state_t *zfsdev_state_list;
extern void zfs_init(void);
extern void zfs_fini(void);
uint_t zfs_fsyncer_key;
extern uint_t rrw_tsd_key;
static uint_t zfs_allow_log_key;
typedef int zfs_ioc_legacy_func_t(zfs_cmd_t *);
typedef int zfs_ioc_func_t(const char *, nvlist_t *, nvlist_t *);
typedef int zfs_secpolicy_func_t(zfs_cmd_t *, nvlist_t *, cred_t *);
/*
* IOC Keys are used to document and validate user->kernel interface inputs.
* See zfs_keys_recv_new for an example declaration. Any key name that is not
* listed will be rejected as input.
*
* The keyname 'optional' is always allowed, and must be an nvlist if present.
* Arguments which older kernels can safely ignore can be placed under the
* "optional" key.
*
* When adding new keys to an existing ioc for new functionality, consider:
* - adding an entry into zfs_sysfs.c zfs_features[] list
* - updating the libzfs_input_check.c test utility
*
* Note: in the ZK_WILDCARDLIST case, the name serves as documentation
* for the expected name (bookmark, snapshot, property, etc) but there
* is no validation in the preflight zfs_check_input_nvpairs() check.
* Limit maximum nvlist size. We don't want users passing in insane values
* for zc->zc_nvlist_src_size, since we will need to allocate that much memory.
*/
typedef enum {
ZK_OPTIONAL = 1 << 0, /* pair is optional */
ZK_WILDCARDLIST = 1 << 1, /* one or more unspecified key names */
} ioc_key_flag_t;
#define MAX_NVLIST_SRC_SIZE KMALLOC_MAX_SIZE
uint_t zfs_fsyncer_key;
uint_t zfs_allow_log_key;
/* DATA_TYPE_ANY is used when zkey_type can vary. */
#define DATA_TYPE_ANY DATA_TYPE_UNKNOWN
typedef struct zfs_ioc_key {
const char *zkey_name;
data_type_t zkey_type;
ioc_key_flag_t zkey_flags;
} zfs_ioc_key_t;
typedef enum {
NO_NAME,
POOL_NAME,
DATASET_NAME,
ENTITY_NAME
} zfs_ioc_namecheck_t;
typedef enum {
POOL_CHECK_NONE = 1 << 0,
POOL_CHECK_SUSPENDED = 1 << 1,
POOL_CHECK_READONLY = 1 << 2,
} zfs_ioc_poolcheck_t;
typedef struct zfs_ioc_vec {
zfs_ioc_legacy_func_t *zvec_legacy_func;
zfs_ioc_func_t *zvec_func;
@ -490,7 +442,8 @@ zfs_dozonecheck(const char *dataset, cred_t *cr)
{
uint64_t zoned;
if (dsl_prop_get_integer(dataset, "zoned", &zoned, NULL))
if (dsl_prop_get_integer(dataset, zfs_prop_to_name(ZFS_PROP_ZONED),
&zoned, NULL))
return (SET_ERROR(ENOENT));
return (zfs_dozonecheck_impl(dataset, zoned, cr));
@ -501,7 +454,7 @@ zfs_dozonecheck_ds(const char *dataset, dsl_dataset_t *ds, cred_t *cr)
{
uint64_t zoned;
if (dsl_prop_get_int_ds(ds, "zoned", &zoned))
if (dsl_prop_get_int_ds(ds, zfs_prop_to_name(ZFS_PROP_ZONED), &zoned))
return (SET_ERROR(ENOENT));
return (zfs_dozonecheck_impl(dataset, zoned, cr));
@ -686,8 +639,8 @@ zfs_secpolicy_setprop(const char *dsname, zfs_prop_t prop, nvpair_t *propval,
* limit on things *under* (ie. contained by)
* the thing they own.
*/
if (dsl_prop_get_integer(dsname, "zoned", &zoned,
setpoint))
if (dsl_prop_get_integer(dsname,
zfs_prop_to_name(ZFS_PROP_ZONED), &zoned, setpoint))
return (SET_ERROR(EPERM));
if (!zoned || strlen(dsname) <= strlen(setpoint))
return (SET_ERROR(EPERM));
@ -1128,7 +1081,7 @@ zfs_secpolicy_create_clone(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
* SYS_CONFIG privilege, which is not available in a local zone.
*/
/* ARGSUSED */
static int
int
zfs_secpolicy_config(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
{
if (secpolicy_sys_config(cr, B_FALSE) != 0)
@ -1435,10 +1388,7 @@ getzfsvfs_impl(objset_t *os, zfsvfs_t **zfvp)
mutex_enter(&os->os_user_ptr_lock);
*zfvp = dmu_objset_get_user(os);
/* bump s_active only when non-zero to prevent umount race */
if (*zfvp == NULL || (*zfvp)->z_sb == NULL ||
!atomic_inc_not_zero(&((*zfvp)->z_sb->s_active))) {
error = SET_ERROR(ESRCH);
}
error = zfs_vfs_ref(zfvp);
mutex_exit(&os->os_user_ptr_lock);
return (error);
}
@ -3629,16 +3579,33 @@ static const zfs_ioc_key_t zfs_keys_destroy_snaps[] = {
static int
zfs_ioc_destroy_snaps(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl)
{
int poollen;
nvlist_t *snaps;
nvpair_t *pair;
boolean_t defer;
spa_t *spa;
snaps = fnvlist_lookup_nvlist(innvl, "snaps");
defer = nvlist_exists(innvl, "defer");
poollen = strlen(poolname);
for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL;
pair = nvlist_next_nvpair(snaps, pair)) {
const char *name = nvpair_name(pair);
/*
* The snap must be in the specified pool to prevent the
* invalid removal of zvol minors below.
*/
if (strncmp(name, poolname, poollen) != 0 ||
(name[poollen] != '/' && name[poollen] != '@'))
return (SET_ERROR(EXDEV));
zfs_unmount_snap(nvpair_name(pair));
if (spa_open(name, &spa, FTAG) == 0) {
zvol_remove_minors(spa, name, B_TRUE);
spa_close(spa, FTAG);
}
}
return (dsl_destroy_snapshots_nvl(snaps, defer, outnvl));
@ -3811,9 +3778,9 @@ zfs_ioc_channel_program(const char *poolname, nvlist_t *innvl,
nvarg = fnvlist_lookup_nvpair(innvl, ZCP_ARG_ARGLIST);
if (instrlimit == 0 || instrlimit > zfs_lua_max_instrlimit)
return (EINVAL);
return (SET_ERROR(EINVAL));
if (memlimit == 0 || memlimit > zfs_lua_max_memlimit)
return (EINVAL);
return (SET_ERROR(EINVAL));
return (zcp_eval(poolname, program, sync_flag, instrlimit, memlimit,
nvarg, outnvl));
@ -4715,6 +4682,15 @@ extract_delay_props(nvlist_t *props)
return (delayprops);
}
static void
zfs_allow_log_destroy(void *arg)
{
char *poolname = arg;
if (poolname != NULL)
strfree(poolname);
}
#ifdef DEBUG
static boolean_t zfs_ioc_recv_inject_err;
#endif
@ -5602,7 +5578,7 @@ zfs_ioc_clear(zfs_cmd_t *zc)
* outnvl is unused
*/
static const zfs_ioc_key_t zfs_keys_pool_reopen[] = {
{"scrub_restart", DATA_TYPE_BOOLEAN_VALUE, 0},
{"scrub_restart", DATA_TYPE_BOOLEAN_VALUE, ZK_OPTIONAL},
};
/* ARGSUSED */
@ -5611,11 +5587,13 @@ zfs_ioc_pool_reopen(const char *pool, nvlist_t *innvl, nvlist_t *outnvl)
{
spa_t *spa;
int error;
boolean_t scrub_restart = B_TRUE;
boolean_t rc, scrub_restart = B_TRUE;
if (innvl) {
scrub_restart = fnvlist_lookup_boolean_value(innvl,
"scrub_restart");
error = nvlist_lookup_boolean_value(innvl,
"scrub_restart", &rc);
if (error == 0)
scrub_restart = rc;
}
error = spa_open(pool, &spa, FTAG);
@ -6016,13 +5994,13 @@ zfs_ioc_hold(const char *pool, nvlist_t *args, nvlist_t *errlist)
if (nvlist_lookup_int32(args, "cleanup_fd", &cleanup_fd) == 0) {
error = zfs_onexit_fd_hold(cleanup_fd, &minor);
if (error != 0)
return (error);
return (SET_ERROR(error));
}
error = dsl_dataset_user_hold(holds, minor, errlist);
if (minor != 0)
zfs_onexit_fd_rele(cleanup_fd);
return (error);
return (SET_ERROR(error));
}
/*
@ -6714,7 +6692,7 @@ zfs_ioctl_register_legacy(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func,
* See the block comment at the beginning of this file for details on
* each argument to this function.
*/
static void
void
zfs_ioctl_register(const char *name, zfs_ioc_t ioc, zfs_ioc_func_t *func,
zfs_secpolicy_func_t *secpolicy, zfs_ioc_namecheck_t namecheck,
zfs_ioc_poolcheck_t pool_check, boolean_t smush_outnvlist,
@ -6750,7 +6728,7 @@ zfs_ioctl_register_pool(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func,
POOL_NAME, log_history, pool_check);
}
static void
void
zfs_ioctl_register_dataset_nolog(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func,
zfs_secpolicy_func_t *secpolicy, zfs_ioc_poolcheck_t pool_check)
{
@ -6796,7 +6774,7 @@ zfs_ioctl_register_dataset_modify(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func,
DATASET_NAME, B_TRUE, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY);
}
static void
void
zfs_ioctl_init(void)
{
zfs_ioctl_register("snapshot", ZFS_IOC_SNAPSHOT,
@ -7080,15 +7058,14 @@ zfs_ioctl_init(void)
zfs_ioc_tmp_snapshot, zfs_secpolicy_tmp_snapshot,
POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY);
/*
* ZoL functions
*/
zfs_ioctl_register_legacy(ZFS_IOC_EVENTS_NEXT, zfs_ioc_events_next,
zfs_secpolicy_config, NO_NAME, B_FALSE, POOL_CHECK_NONE);
zfs_ioctl_register_legacy(ZFS_IOC_EVENTS_CLEAR, zfs_ioc_events_clear,
zfs_secpolicy_config, NO_NAME, B_FALSE, POOL_CHECK_NONE);
zfs_ioctl_register_legacy(ZFS_IOC_EVENTS_SEEK, zfs_ioc_events_seek,
zfs_secpolicy_config, NO_NAME, B_FALSE, POOL_CHECK_NONE);
zfs_ioctl_init_os();
}
/*
@ -7221,37 +7198,6 @@ zfsdev_get_state(minor_t minor, enum zfsdev_state_type which)
return (ptr);
}
int
zfsdev_getminor(struct file *filp, minor_t *minorp)
{
zfsdev_state_t *zs, *fpd;
ASSERT(filp != NULL);
ASSERT(!MUTEX_HELD(&zfsdev_state_lock));
fpd = filp->private_data;
if (fpd == NULL)
return (SET_ERROR(EBADF));
mutex_enter(&zfsdev_state_lock);
for (zs = zfsdev_state_list; zs != NULL; zs = zs->zs_next) {
if (zs->zs_minor == -1)
continue;
if (fpd == zs) {
*minorp = fpd->zs_minor;
mutex_exit(&zfsdev_state_lock);
return (0);
}
}
mutex_exit(&zfsdev_state_lock);
return (SET_ERROR(EBADF));
}
/*
* Find a free minor number. The zfsdev_state_list is expected to
* be short since it is only a list of currently open file handles.
@ -7276,109 +7222,17 @@ zfsdev_minor_alloc(void)
return (0);
}
static int
zfsdev_state_init(struct file *filp)
{
zfsdev_state_t *zs, *zsprev = NULL;
minor_t minor;
boolean_t newzs = B_FALSE;
ASSERT(MUTEX_HELD(&zfsdev_state_lock));
minor = zfsdev_minor_alloc();
if (minor == 0)
return (SET_ERROR(ENXIO));
for (zs = zfsdev_state_list; zs != NULL; zs = zs->zs_next) {
if (zs->zs_minor == -1)
break;
zsprev = zs;
}
if (!zs) {
zs = kmem_zalloc(sizeof (zfsdev_state_t), KM_SLEEP);
newzs = B_TRUE;
}
zs->zs_file = filp;
filp->private_data = zs;
zfs_onexit_init((zfs_onexit_t **)&zs->zs_onexit);
zfs_zevent_init((zfs_zevent_t **)&zs->zs_zevent);
/*
* In order to provide for lock-free concurrent read access
* to the minor list in zfsdev_get_state_impl(), new entries
* must be completely written before linking them into the
* list whereas existing entries are already linked; the last
* operation must be updating zs_minor (from -1 to the new
* value).
*/
if (newzs) {
zs->zs_minor = minor;
smp_wmb();
zsprev->zs_next = zs;
} else {
smp_wmb();
zs->zs_minor = minor;
}
return (0);
}
static int
zfsdev_state_destroy(struct file *filp)
{
zfsdev_state_t *zs;
ASSERT(MUTEX_HELD(&zfsdev_state_lock));
ASSERT(filp->private_data != NULL);
zs = filp->private_data;
zs->zs_minor = -1;
zfs_onexit_destroy(zs->zs_onexit);
zfs_zevent_destroy(zs->zs_zevent);
return (0);
}
static int
zfsdev_open(struct inode *ino, struct file *filp)
{
int error;
mutex_enter(&zfsdev_state_lock);
error = zfsdev_state_init(filp);
mutex_exit(&zfsdev_state_lock);
return (-error);
}
static int
zfsdev_release(struct inode *ino, struct file *filp)
{
int error;
mutex_enter(&zfsdev_state_lock);
error = zfsdev_state_destroy(filp);
mutex_exit(&zfsdev_state_lock);
return (-error);
}
static long
zfsdev_ioctl(struct file *filp, unsigned cmd, unsigned long arg)
long
zfsdev_ioctl_common(uint_t vecnum, unsigned long arg)
{
zfs_cmd_t *zc;
uint_t vecnum;
int error, rc, flag = 0;
int error, cmd, rc, flag = 0;
const zfs_ioc_vec_t *vec;
char *saved_poolname = NULL;
nvlist_t *innvl = NULL;
fstrans_cookie_t cookie;
vecnum = cmd - ZFS_IOC_FIRST;
cmd = vecnum;
if (vecnum >= sizeof (zfs_ioc_vec) / sizeof (zfs_ioc_vec[0]))
return (-SET_ERROR(ZFS_ERR_IOC_CMD_UNAVAIL));
vec = &zfs_ioc_vec[vecnum];
@ -7577,97 +7431,8 @@ out:
return (-error);
}
#ifdef CONFIG_COMPAT
static long
zfsdev_compat_ioctl(struct file *filp, unsigned cmd, unsigned long arg)
{
return (zfsdev_ioctl(filp, cmd, arg));
}
#else
#define zfsdev_compat_ioctl NULL
#endif
static const struct file_operations zfsdev_fops = {
.open = zfsdev_open,
.release = zfsdev_release,
.unlocked_ioctl = zfsdev_ioctl,
.compat_ioctl = zfsdev_compat_ioctl,
.owner = THIS_MODULE,
};
static struct miscdevice zfs_misc = {
.minor = ZFS_DEVICE_MINOR,
.name = ZFS_DRIVER,
.fops = &zfsdev_fops,
};
MODULE_ALIAS_MISCDEV(ZFS_DEVICE_MINOR);
MODULE_ALIAS("devname:zfs");
static int
zfs_attach(void)
{
int error;
mutex_init(&zfsdev_state_lock, NULL, MUTEX_DEFAULT, NULL);
zfsdev_state_list = kmem_zalloc(sizeof (zfsdev_state_t), KM_SLEEP);
zfsdev_state_list->zs_minor = -1;
error = misc_register(&zfs_misc);
if (error == -EBUSY) {
/*
* Fallback to dynamic minor allocation in the event of a
* collision with a reserved minor in linux/miscdevice.h.
* In this case the kernel modules must be manually loaded.
*/
printk(KERN_INFO "ZFS: misc_register() with static minor %d "
"failed %d, retrying with MISC_DYNAMIC_MINOR\n",
ZFS_DEVICE_MINOR, error);
zfs_misc.minor = MISC_DYNAMIC_MINOR;
error = misc_register(&zfs_misc);
}
if (error)
printk(KERN_INFO "ZFS: misc_register() failed %d\n", error);
return (error);
}
static void
zfs_detach(void)
{
zfsdev_state_t *zs, *zsprev = NULL;
misc_deregister(&zfs_misc);
mutex_destroy(&zfsdev_state_lock);
for (zs = zfsdev_state_list; zs != NULL; zs = zs->zs_next) {
if (zsprev)
kmem_free(zsprev, sizeof (zfsdev_state_t));
zsprev = zs;
}
if (zsprev)
kmem_free(zsprev, sizeof (zfsdev_state_t));
}
static void
zfs_allow_log_destroy(void *arg)
{
char *poolname = arg;
if (poolname != NULL)
strfree(poolname);
}
#ifdef DEBUG
#define ZFS_DEBUG_STR " (DEBUG mode)"
#else
#define ZFS_DEBUG_STR ""
#endif
static int __init
_init(void)
int
zfs_kmod_init(void)
{
int error;
@ -7678,42 +7443,44 @@ _init(void)
zfs_init();
zfs_ioctl_init();
zfs_sysfs_init();
if ((error = zfs_attach()) != 0)
mutex_init(&zfsdev_state_lock, NULL, MUTEX_DEFAULT, NULL);
zfsdev_state_list = kmem_zalloc(sizeof (zfsdev_state_t), KM_SLEEP);
zfsdev_state_list->zs_minor = -1;
if ((error = zfsdev_attach()) != 0)
goto out;
tsd_create(&zfs_fsyncer_key, NULL);
tsd_create(&rrw_tsd_key, rrw_tsd_destroy);
tsd_create(&zfs_allow_log_key, zfs_allow_log_destroy);
printk(KERN_NOTICE "ZFS: Loaded module v%s-%s%s, "
"ZFS pool version %s, ZFS filesystem version %s\n",
ZFS_META_VERSION, ZFS_META_RELEASE, ZFS_DEBUG_STR,
SPA_VERSION_STRING, ZPL_VERSION_STRING);
#ifndef CONFIG_FS_POSIX_ACL
printk(KERN_NOTICE "ZFS: Posix ACLs disabled by kernel\n");
#endif /* CONFIG_FS_POSIX_ACL */
return (0);
out:
zfs_sysfs_fini();
zfs_fini();
spa_fini();
(void) zvol_fini();
printk(KERN_NOTICE "ZFS: Failed to Load ZFS Filesystem v%s-%s%s"
", rc = %d\n", ZFS_META_VERSION, ZFS_META_RELEASE,
ZFS_DEBUG_STR, error);
zvol_fini();
return (error);
}
static void __exit
_fini(void)
void
zfs_kmod_fini(void)
{
zfs_detach();
zfs_sysfs_fini();
zfsdev_state_t *zs, *zsprev = NULL;
zfsdev_detach();
mutex_destroy(&zfsdev_state_lock);
for (zs = zfsdev_state_list; zs != NULL; zs = zs->zs_next) {
if (zsprev)
kmem_free(zsprev, sizeof (zfsdev_state_t));
zsprev = zs;
}
if (zsprev)
kmem_free(zsprev, sizeof (zfsdev_state_t));
zfs_fini();
spa_fini();
zvol_fini();
@ -7721,17 +7488,4 @@ _fini(void)
tsd_destroy(&zfs_fsyncer_key);
tsd_destroy(&rrw_tsd_key);
tsd_destroy(&zfs_allow_log_key);
printk(KERN_NOTICE "ZFS: Unloaded module v%s-%s%s\n",
ZFS_META_VERSION, ZFS_META_RELEASE, ZFS_DEBUG_STR);
}
#if defined(_KERNEL)
module_init(_init);
module_exit(_fini);
MODULE_DESCRIPTION("ZFS");
MODULE_AUTHOR(ZFS_META_AUTHOR);
MODULE_LICENSE(ZFS_META_LICENSE);
MODULE_VERSION(ZFS_META_VERSION "-" ZFS_META_RELEASE);
#endif

8
tests/zfs-tests/cmd/libzfs_input_check/libzfs_input_check.c
View File

@ -272,13 +272,13 @@ test_pool_sync(const char *pool)
static void
test_pool_reopen(const char *pool)
{
nvlist_t *required = fnvlist_alloc();
nvlist_t *optional = fnvlist_alloc();
fnvlist_add_boolean_value(required, "scrub_restart", B_FALSE);
fnvlist_add_boolean_value(optional, "scrub_restart", B_FALSE);
IOC_INPUT_TEST(ZFS_IOC_POOL_REOPEN, pool, required, NULL, 0);
IOC_INPUT_TEST(ZFS_IOC_POOL_REOPEN, pool, NULL, optional, 0);
nvlist_free(required);
nvlist_free(optional);
}
static void