freebsd-dev/module/nvpair/fnvpair.c
Matthew Ahrens 6f1ffb0665 Illumos #2882, #2883, #2900
2882 implement libzfs_core
2883 changing "canmount" property to "on" should not always remount dataset
2900 "zfs snapshot" should be able to create multiple, arbitrary snapshots at once

Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed by: Chris Siden <christopher.siden@delphix.com>
Reviewed by: Garrett D'Amore <garrett@damore.org>
Reviewed by: Bill Pijewski <wdp@joyent.com>
Reviewed by: Dan Kruchinin <dan.kruchinin@gmail.com>
Approved by: Eric Schrock <Eric.Schrock@delphix.com>

References:
  https://www.illumos.org/issues/2882
  https://www.illumos.org/issues/2883
  https://www.illumos.org/issues/2900
  illumos/illumos-gate@4445fffbbb

Ported-by: Tim Chase <tim@chase2k.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #1293

Porting notes:

WARNING: This patch changes the user/kernel ABI.  That means that
the zfs/zpool utilities built from master are NOT compatible with
the 0.6.2 kernel modules.  Ensure you load the matching kernel
modules from master after updating the utilities.  Otherwise the
zfs/zpool commands will be unable to interact with your pool and
you will see errors similar to the following:

  $ zpool list
  failed to read pool configuration: bad address
  no pools available

  $ zfs list
  no datasets available

Add zvol minor device creation to the new zfs_snapshot_nvl function.

Remove the logging of the "release" operation in
dsl_dataset_user_release_sync().  The logging caused a null dereference
because ds->ds_dir is zeroed in dsl_dataset_destroy_sync() and the
logging functions try to get the ds name via the dsl_dataset_name()
function. I've got no idea why this particular code would have worked
in Illumos.  This code has subsequently been completely reworked in
Illumos commit 3b2aab1 (3464 zfs synctask code needs restructuring).

Squash some "may be used uninitialized" warning/erorrs.

Fix some printf format warnings for %lld and %llu.

Apply a few spa_writeable() changes that were made to Illumos in
illumos/illumos-gate.git@cd1c8b8 as part of the 3112, 3113, 3114 and
3115 fixes.

Add a missing call to fnvlist_free(nvl) in log_internal() that was added
in Illumos to fix issue 3085 but couldn't be ported to ZoL at the time
(zfsonlinux/zfs@9e11c73) because it depended on future work.
2013-09-04 15:49:00 -07:00

568 lines
12 KiB
C

/*
* 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) 2012 by Delphix. All rights reserved.
*/
#include <sys/nvpair.h>
#include <sys/kmem.h>
#include <sys/debug.h>
#ifndef _KERNEL
#include <stdlib.h>
#endif
/*
* "Force" nvlist wrapper.
*
* These functions wrap the nvlist_* functions with assertions that assume
* the operation is successful. This allows the caller's code to be much
* more readable, especially for the fnvlist_lookup_* and fnvpair_value_*
* functions, which can return the requested value (rather than filling in
* a pointer).
*
* These functions use NV_UNIQUE_NAME, encoding NV_ENCODE_NATIVE, and allocate
* with KM_SLEEP.
*
* More wrappers should be added as needed -- for example
* nvlist_lookup_*_array and nvpair_value_*_array.
*/
nvlist_t *
fnvlist_alloc(void)
{
nvlist_t *nvl;
VERIFY0(nvlist_alloc(&nvl, NV_UNIQUE_NAME, KM_SLEEP));
return (nvl);
}
void
fnvlist_free(nvlist_t *nvl)
{
nvlist_free(nvl);
}
size_t
fnvlist_size(nvlist_t *nvl)
{
size_t size;
VERIFY0(nvlist_size(nvl, &size, NV_ENCODE_NATIVE));
return (size);
}
/*
* Returns allocated buffer of size *sizep. Caller must free the buffer with
* fnvlist_pack_free().
*/
char *
fnvlist_pack(nvlist_t *nvl, size_t *sizep)
{
char *packed = 0;
VERIFY3U(nvlist_pack(nvl, &packed, sizep, NV_ENCODE_NATIVE,
KM_SLEEP), ==, 0);
return (packed);
}
/*ARGSUSED*/
void
fnvlist_pack_free(char *pack, size_t size)
{
#ifdef _KERNEL
kmem_free(pack, size);
#else
free(pack);
#endif
}
nvlist_t *
fnvlist_unpack(char *buf, size_t buflen)
{
nvlist_t *rv;
VERIFY0(nvlist_unpack(buf, buflen, &rv, KM_SLEEP));
return (rv);
}
nvlist_t *
fnvlist_dup(nvlist_t *nvl)
{
nvlist_t *rv;
VERIFY0(nvlist_dup(nvl, &rv, KM_SLEEP));
return (rv);
}
void
fnvlist_merge(nvlist_t *dst, nvlist_t *src)
{
VERIFY0(nvlist_merge(dst, src, KM_SLEEP));
}
void
fnvlist_add_boolean(nvlist_t *nvl, const char *name)
{
VERIFY0(nvlist_add_boolean(nvl, name));
}
void
fnvlist_add_boolean_value(nvlist_t *nvl, const char *name, boolean_t val)
{
VERIFY0(nvlist_add_boolean_value(nvl, name, val));
}
void
fnvlist_add_byte(nvlist_t *nvl, const char *name, uchar_t val)
{
VERIFY0(nvlist_add_byte(nvl, name, val));
}
void
fnvlist_add_int8(nvlist_t *nvl, const char *name, int8_t val)
{
VERIFY0(nvlist_add_int8(nvl, name, val));
}
void
fnvlist_add_uint8(nvlist_t *nvl, const char *name, uint8_t val)
{
VERIFY0(nvlist_add_uint8(nvl, name, val));
}
void
fnvlist_add_int16(nvlist_t *nvl, const char *name, int16_t val)
{
VERIFY0(nvlist_add_int16(nvl, name, val));
}
void
fnvlist_add_uint16(nvlist_t *nvl, const char *name, uint16_t val)
{
VERIFY0(nvlist_add_uint16(nvl, name, val));
}
void
fnvlist_add_int32(nvlist_t *nvl, const char *name, int32_t val)
{
VERIFY0(nvlist_add_int32(nvl, name, val));
}
void
fnvlist_add_uint32(nvlist_t *nvl, const char *name, uint32_t val)
{
VERIFY0(nvlist_add_uint32(nvl, name, val));
}
void
fnvlist_add_int64(nvlist_t *nvl, const char *name, int64_t val)
{
VERIFY0(nvlist_add_int64(nvl, name, val));
}
void
fnvlist_add_uint64(nvlist_t *nvl, const char *name, uint64_t val)
{
VERIFY0(nvlist_add_uint64(nvl, name, val));
}
void
fnvlist_add_string(nvlist_t *nvl, const char *name, const char *val)
{
VERIFY0(nvlist_add_string(nvl, name, val));
}
void
fnvlist_add_nvlist(nvlist_t *nvl, const char *name, nvlist_t *val)
{
VERIFY0(nvlist_add_nvlist(nvl, name, val));
}
void
fnvlist_add_nvpair(nvlist_t *nvl, nvpair_t *pair)
{
VERIFY0(nvlist_add_nvpair(nvl, pair));
}
void
fnvlist_add_boolean_array(nvlist_t *nvl, const char *name,
boolean_t *val, uint_t n)
{
VERIFY0(nvlist_add_boolean_array(nvl, name, val, n));
}
void
fnvlist_add_byte_array(nvlist_t *nvl, const char *name, uchar_t *val, uint_t n)
{
VERIFY0(nvlist_add_byte_array(nvl, name, val, n));
}
void
fnvlist_add_int8_array(nvlist_t *nvl, const char *name, int8_t *val, uint_t n)
{
VERIFY0(nvlist_add_int8_array(nvl, name, val, n));
}
void
fnvlist_add_uint8_array(nvlist_t *nvl, const char *name, uint8_t *val, uint_t n)
{
VERIFY0(nvlist_add_uint8_array(nvl, name, val, n));
}
void
fnvlist_add_int16_array(nvlist_t *nvl, const char *name, int16_t *val, uint_t n)
{
VERIFY0(nvlist_add_int16_array(nvl, name, val, n));
}
void
fnvlist_add_uint16_array(nvlist_t *nvl, const char *name,
uint16_t *val, uint_t n)
{
VERIFY0(nvlist_add_uint16_array(nvl, name, val, n));
}
void
fnvlist_add_int32_array(nvlist_t *nvl, const char *name, int32_t *val, uint_t n)
{
VERIFY0(nvlist_add_int32_array(nvl, name, val, n));
}
void
fnvlist_add_uint32_array(nvlist_t *nvl, const char *name,
uint32_t *val, uint_t n)
{
VERIFY0(nvlist_add_uint32_array(nvl, name, val, n));
}
void
fnvlist_add_int64_array(nvlist_t *nvl, const char *name, int64_t *val, uint_t n)
{
VERIFY0(nvlist_add_int64_array(nvl, name, val, n));
}
void
fnvlist_add_uint64_array(nvlist_t *nvl, const char *name,
uint64_t *val, uint_t n)
{
VERIFY0(nvlist_add_uint64_array(nvl, name, val, n));
}
void
fnvlist_add_string_array(nvlist_t *nvl, const char *name,
char * const *val, uint_t n)
{
VERIFY0(nvlist_add_string_array(nvl, name, val, n));
}
void
fnvlist_add_nvlist_array(nvlist_t *nvl, const char *name,
nvlist_t **val, uint_t n)
{
VERIFY0(nvlist_add_nvlist_array(nvl, name, val, n));
}
void
fnvlist_remove(nvlist_t *nvl, const char *name)
{
VERIFY0(nvlist_remove_all(nvl, name));
}
void
fnvlist_remove_nvpair(nvlist_t *nvl, nvpair_t *pair)
{
VERIFY0(nvlist_remove_nvpair(nvl, pair));
}
nvpair_t *
fnvlist_lookup_nvpair(nvlist_t *nvl, const char *name)
{
nvpair_t *rv;
VERIFY0(nvlist_lookup_nvpair(nvl, name, &rv));
return (rv);
}
/* returns B_TRUE if the entry exists */
boolean_t
fnvlist_lookup_boolean(nvlist_t *nvl, const char *name)
{
return (nvlist_lookup_boolean(nvl, name) == 0);
}
boolean_t
fnvlist_lookup_boolean_value(nvlist_t *nvl, const char *name)
{
boolean_t rv;
VERIFY0(nvlist_lookup_boolean_value(nvl, name, &rv));
return (rv);
}
uchar_t
fnvlist_lookup_byte(nvlist_t *nvl, const char *name)
{
uchar_t rv;
VERIFY0(nvlist_lookup_byte(nvl, name, &rv));
return (rv);
}
int8_t
fnvlist_lookup_int8(nvlist_t *nvl, const char *name)
{
int8_t rv;
VERIFY0(nvlist_lookup_int8(nvl, name, &rv));
return (rv);
}
int16_t
fnvlist_lookup_int16(nvlist_t *nvl, const char *name)
{
int16_t rv;
VERIFY0(nvlist_lookup_int16(nvl, name, &rv));
return (rv);
}
int32_t
fnvlist_lookup_int32(nvlist_t *nvl, const char *name)
{
int32_t rv;
VERIFY0(nvlist_lookup_int32(nvl, name, &rv));
return (rv);
}
int64_t
fnvlist_lookup_int64(nvlist_t *nvl, const char *name)
{
int64_t rv;
VERIFY0(nvlist_lookup_int64(nvl, name, &rv));
return (rv);
}
uint8_t
fnvlist_lookup_uint8(nvlist_t *nvl, const char *name)
{
uint8_t rv;
VERIFY0(nvlist_lookup_uint8(nvl, name, &rv));
return (rv);
}
uint16_t
fnvlist_lookup_uint16(nvlist_t *nvl, const char *name)
{
uint16_t rv;
VERIFY0(nvlist_lookup_uint16(nvl, name, &rv));
return (rv);
}
uint32_t
fnvlist_lookup_uint32(nvlist_t *nvl, const char *name)
{
uint32_t rv;
VERIFY0(nvlist_lookup_uint32(nvl, name, &rv));
return (rv);
}
uint64_t
fnvlist_lookup_uint64(nvlist_t *nvl, const char *name)
{
uint64_t rv;
VERIFY0(nvlist_lookup_uint64(nvl, name, &rv));
return (rv);
}
char *
fnvlist_lookup_string(nvlist_t *nvl, const char *name)
{
char *rv;
VERIFY0(nvlist_lookup_string(nvl, name, &rv));
return (rv);
}
nvlist_t *
fnvlist_lookup_nvlist(nvlist_t *nvl, const char *name)
{
nvlist_t *rv;
VERIFY0(nvlist_lookup_nvlist(nvl, name, &rv));
return (rv);
}
boolean_t
fnvpair_value_boolean_value(nvpair_t *nvp)
{
boolean_t rv;
VERIFY0(nvpair_value_boolean_value(nvp, &rv));
return (rv);
}
uchar_t
fnvpair_value_byte(nvpair_t *nvp)
{
uchar_t rv;
VERIFY0(nvpair_value_byte(nvp, &rv));
return (rv);
}
int8_t
fnvpair_value_int8(nvpair_t *nvp)
{
int8_t rv;
VERIFY0(nvpair_value_int8(nvp, &rv));
return (rv);
}
int16_t
fnvpair_value_int16(nvpair_t *nvp)
{
int16_t rv;
VERIFY0(nvpair_value_int16(nvp, &rv));
return (rv);
}
int32_t
fnvpair_value_int32(nvpair_t *nvp)
{
int32_t rv;
VERIFY0(nvpair_value_int32(nvp, &rv));
return (rv);
}
int64_t
fnvpair_value_int64(nvpair_t *nvp)
{
int64_t rv;
VERIFY0(nvpair_value_int64(nvp, &rv));
return (rv);
}
uint8_t
fnvpair_value_uint8(nvpair_t *nvp)
{
uint8_t rv;
VERIFY0(nvpair_value_uint8(nvp, &rv));
return (rv);
}
uint16_t
fnvpair_value_uint16(nvpair_t *nvp)
{
uint16_t rv;
VERIFY0(nvpair_value_uint16(nvp, &rv));
return (rv);
}
uint32_t
fnvpair_value_uint32(nvpair_t *nvp)
{
uint32_t rv;
VERIFY0(nvpair_value_uint32(nvp, &rv));
return (rv);
}
uint64_t
fnvpair_value_uint64(nvpair_t *nvp)
{
uint64_t rv;
VERIFY0(nvpair_value_uint64(nvp, &rv));
return (rv);
}
char *
fnvpair_value_string(nvpair_t *nvp)
{
char *rv;
VERIFY0(nvpair_value_string(nvp, &rv));
return (rv);
}
nvlist_t *
fnvpair_value_nvlist(nvpair_t *nvp)
{
nvlist_t *rv;
VERIFY0(nvpair_value_nvlist(nvp, &rv));
return (rv);
}
#if defined(_KERNEL) && defined(HAVE_SPL)
EXPORT_SYMBOL(fnvlist_alloc);
EXPORT_SYMBOL(fnvlist_free);
EXPORT_SYMBOL(fnvlist_size);
EXPORT_SYMBOL(fnvlist_pack);
EXPORT_SYMBOL(fnvlist_pack_free);
EXPORT_SYMBOL(fnvlist_unpack);
EXPORT_SYMBOL(fnvlist_dup);
EXPORT_SYMBOL(fnvlist_merge);
EXPORT_SYMBOL(fnvlist_add_nvpair);
EXPORT_SYMBOL(fnvlist_add_boolean);
EXPORT_SYMBOL(fnvlist_add_boolean_value);
EXPORT_SYMBOL(fnvlist_add_byte);
EXPORT_SYMBOL(fnvlist_add_int8);
EXPORT_SYMBOL(fnvlist_add_uint8);
EXPORT_SYMBOL(fnvlist_add_int16);
EXPORT_SYMBOL(fnvlist_add_uint16);
EXPORT_SYMBOL(fnvlist_add_int32);
EXPORT_SYMBOL(fnvlist_add_uint32);
EXPORT_SYMBOL(fnvlist_add_int64);
EXPORT_SYMBOL(fnvlist_add_uint64);
EXPORT_SYMBOL(fnvlist_add_string);
EXPORT_SYMBOL(fnvlist_add_nvlist);
EXPORT_SYMBOL(fnvlist_add_boolean_array);
EXPORT_SYMBOL(fnvlist_add_byte_array);
EXPORT_SYMBOL(fnvlist_add_int8_array);
EXPORT_SYMBOL(fnvlist_add_uint8_array);
EXPORT_SYMBOL(fnvlist_add_int16_array);
EXPORT_SYMBOL(fnvlist_add_uint16_array);
EXPORT_SYMBOL(fnvlist_add_int32_array);
EXPORT_SYMBOL(fnvlist_add_uint32_array);
EXPORT_SYMBOL(fnvlist_add_int64_array);
EXPORT_SYMBOL(fnvlist_add_uint64_array);
EXPORT_SYMBOL(fnvlist_add_string_array);
EXPORT_SYMBOL(fnvlist_add_nvlist_array);
EXPORT_SYMBOL(fnvlist_remove);
EXPORT_SYMBOL(fnvlist_remove_nvpair);
EXPORT_SYMBOL(fnvlist_lookup_nvpair);
EXPORT_SYMBOL(fnvlist_lookup_boolean);
EXPORT_SYMBOL(fnvlist_lookup_boolean_value);
EXPORT_SYMBOL(fnvlist_lookup_byte);
EXPORT_SYMBOL(fnvlist_lookup_int8);
EXPORT_SYMBOL(fnvlist_lookup_uint8);
EXPORT_SYMBOL(fnvlist_lookup_int16);
EXPORT_SYMBOL(fnvlist_lookup_uint16);
EXPORT_SYMBOL(fnvlist_lookup_int32);
EXPORT_SYMBOL(fnvlist_lookup_uint32);
EXPORT_SYMBOL(fnvlist_lookup_int64);
EXPORT_SYMBOL(fnvlist_lookup_uint64);
EXPORT_SYMBOL(fnvlist_lookup_string);
EXPORT_SYMBOL(fnvlist_lookup_nvlist);
EXPORT_SYMBOL(fnvpair_value_boolean_value);
EXPORT_SYMBOL(fnvpair_value_byte);
EXPORT_SYMBOL(fnvpair_value_int8);
EXPORT_SYMBOL(fnvpair_value_uint8);
EXPORT_SYMBOL(fnvpair_value_int16);
EXPORT_SYMBOL(fnvpair_value_uint16);
EXPORT_SYMBOL(fnvpair_value_int32);
EXPORT_SYMBOL(fnvpair_value_uint32);
EXPORT_SYMBOL(fnvpair_value_int64);
EXPORT_SYMBOL(fnvpair_value_uint64);
EXPORT_SYMBOL(fnvpair_value_string);
EXPORT_SYMBOL(fnvpair_value_nvlist);
#endif