c/mirror_zfs
1
0
Fork 0
mirror of https://git.proxmox.com/git/mirror_zfs.git synced 2026-05-27 04:32:16 +03:00
Code Issues Packages Projects Releases Wiki Activity

OpenZFS 7431 - ZFS Channel Programs

Browse Source 
Authored by: Chris Williamson <chris.williamson@delphix.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed by: John Kennedy <john.kennedy@delphix.com>
Reviewed by: Dan Kimmel <dan.kimmel@delphix.com>
Approved by: Garrett D'Amore <garrett@damore.org>
Ported-by: Don Brady <don.brady@delphix.com>
Ported-by: John Kennedy <john.kennedy@delphix.com>

OpenZFS-issue: https://www.illumos.org/issues/7431
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/dfc11533

Porting Notes:
* The CLI long option arguments for '-t' and '-m' don't parse on linux
* Switched from kmem_alloc to vmem_alloc in zcp_lua_alloc
* Lua implementation is built as its own module (zlua.ko)
* Lua headers consumed directly by zfs code moved to 'include/sys/lua/'
* There is no native setjmp/longjump available in stock Linux kernel.
  Brought over implementations from illumos and FreeBSD
* The get_temporary_prop() was adapted due to VFS platform differences
* Use of inline functions in lua parser to reduce stack usage per C call
* Skip some ZFS Test Suite ZCP tests on sparc64 to avoid stack overflow
This commit is contained in:
Chris Williamson
2018-02-08 09:16:23 -07:00
committed by Brian Behlendorf
parent 8824a7f133
commit d99a015343
179 changed files with 27056 additions and 273 deletions
Download Patch File Download Diff File Expand all files Collapse all files
module/zfs/zfs_ioctl.c
+69 -11
View File
@@ -27,7 +27,7 @@
* 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, 2015 by Delphix. All rights reserved.
* Copyright (c) 2011, 2016 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]
@@ -193,6 +193,7 @@
#include <sys/dsl_bookmark.h>
#include <sys/dsl_userhold.h>
#include <sys/zfeature.h>
#include <sys/zcp.h>
#include <sys/zio_checksum.h>
#include <linux/miscdevice.h>
@@ -203,6 +204,9 @@
#include "zfs_deleg.h"
#include "zfs_comutil.h"
#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.
@@ -1414,17 +1418,11 @@ put_nvlist(zfs_cmd_t *zc, nvlist_t *nvl)
return (error);
}
static int
getzfsvfs(const char *dsname, zfsvfs_t **zfvp)
int
getzfsvfs_impl(objset_t *os, zfsvfs_t **zfvp)
{
objset_t *os;
int error;
error = dmu_objset_hold(dsname, FTAG, &os);
if (error != 0)
return (error);
int error = 0;
if (dmu_objset_type(os) != DMU_OST_ZFS) {
dmu_objset_rele(os, FTAG);
return (SET_ERROR(EINVAL));
}
@@ -1436,6 +1434,20 @@ getzfsvfs(const char *dsname, zfsvfs_t **zfvp)
error = SET_ERROR(ESRCH);
}
mutex_exit(&os->os_user_ptr_lock);
return (error);
}
static int
getzfsvfs(const char *dsname, zfsvfs_t **zfvp)
{
objset_t *os;
int error;
error = dmu_objset_hold(dsname, FTAG, &os);
if (error != 0)
return (error);
error = getzfsvfs_impl(os, zfvp);
dmu_objset_rele(os, FTAG);
return (error);
}
@@ -3660,6 +3672,36 @@ zfs_ioc_destroy_bookmarks(const char *poolname, nvlist_t *innvl,
return (error);
}
static int
zfs_ioc_channel_program(const char *poolname, nvlist_t *innvl,
nvlist_t *outnvl)
{
char *program;
uint64_t instrlimit, memlimit;
nvpair_t *nvarg = NULL;
if (0 != nvlist_lookup_string(innvl, ZCP_ARG_PROGRAM, &program)) {
return (EINVAL);
}
if (0 != nvlist_lookup_uint64(innvl, ZCP_ARG_INSTRLIMIT, &instrlimit)) {
instrlimit = ZCP_DEFAULT_INSTRLIMIT;
}
if (0 != nvlist_lookup_uint64(innvl, ZCP_ARG_MEMLIMIT, &memlimit)) {
memlimit = ZCP_DEFAULT_MEMLIMIT;
}
if (0 != nvlist_lookup_nvpair(innvl, ZCP_ARG_ARGLIST, &nvarg)) {
return (EINVAL);
}
if (instrlimit == 0 || instrlimit > zfs_lua_max_instrlimit)
return (EINVAL);
if (memlimit == 0 || memlimit > ZCP_MAX_MEMLIMIT)
return (EINVAL);
return (zcp_eval(poolname, program, instrlimit, memlimit,
nvarg, outnvl));
}
/*
* inputs:
* zc_name name of dataset to destroy
@@ -6333,6 +6375,11 @@ zfs_ioctl_init(void)
zfs_secpolicy_config, POOL_NAME, POOL_CHECK_SUSPENDED, B_TRUE,
B_TRUE);
zfs_ioctl_register("channel_program", ZFS_IOC_CHANNEL_PROGRAM,
zfs_ioc_channel_program, zfs_secpolicy_config,
POOL_NAME, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE,
B_TRUE);
/* IOCTLS that use the legacy function signature */
zfs_ioctl_register_legacy(ZFS_IOC_POOL_FREEZE, zfs_ioc_pool_freeze,
@@ -6803,12 +6850,23 @@ zfsdev_ioctl(struct file *filp, unsigned cmd, unsigned long arg)
error = vec->zvec_func(zc->zc_name, innvl, outnvl);
spl_fstrans_unmark(cookie);
if (error == 0 && vec->zvec_allow_log &&
/*
* Some commands can partially execute, modify state, and still
* return an error. In these cases, attempt to record what
* was modified.
*/
if ((error == 0 ||
(cmd == ZFS_IOC_CHANNEL_PROGRAM && error != EINVAL)) &&
vec->zvec_allow_log &&
spa_open(zc->zc_name, &spa, FTAG) == 0) {
if (!nvlist_empty(outnvl)) {
fnvlist_add_nvlist(lognv, ZPOOL_HIST_OUTPUT_NVL,
outnvl);
}
if (error != 0) {
fnvlist_add_int64(lognv, ZPOOL_HIST_ERRNO,
error);
}
(void) spa_history_log_nvl(spa, lognv);
spa_close(spa, FTAG);
}