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Simplify and document OpenZFS library dependencies 

For those not already familiar with the code base it can be a
challenge to understand how the libraries are laid out.  This
has sometimes resulted in functionality being added in the
wrong place.  To help avoid that in the future this commit
documents the high-level dependencies for easy reference in
lib/Makefile.am.  It also simplifies a few things.

- Switched libzpool dependency on libzfs_core to libzutil.
  This change makes it clear libzpool should never depend
  on the ioctl() functionality provided by libzfs_core.

- Moved zfs_ioctl_fd() from libzutil to libzfs_core and
  renamed it lzc_ioctl_fd().  Normal access to the kmods
  should all be funneled through the libzfs_core library.
  The sole exception is the pool_active() which was updated
  to not use lzc_ioctl_fd() to remove the libzfs_core
  dependency.

- Removed libzfs_core dependency on libzutil.

- Removed the lib/libzfs/os/freebsd/libzfs_ioctl_compat.c
  source file which was all dead code.

- Removed libzfs_core dependency from mkbusy and ctime
  test utilities.  It was only needed for some trivial
  wrapper functions and that code is easy to replicate
  to shed the unneeded dependency.

Reviewed-by: Ryan Moeller <ryan@ixsystems.com>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Don Brady <don.brady@delphix.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #12602
This commit is contained in:
Brian Behlendorf 2021-10-07 10:31:26 -07:00 committed by GitHub
parent 48df24d4ce
commit 514498fef6
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
21 changed files with 1991 additions and 1436 deletions
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3
include/libzfs_core.h
View File

@ -41,6 +41,9 @@ extern "C" {
_LIBZFS_CORE_H int libzfs_core_init(void); _LIBZFS_CORE_H int libzfs_core_init(void);
_LIBZFS_CORE_H void libzfs_core_fini(void); _LIBZFS_CORE_H void libzfs_core_fini(void);
struct zfs_cmd;
_LIBZFS_CORE_H int lzc_ioctl_fd(int, unsigned long, struct zfs_cmd *);
/* /*
* NB: this type should be kept binary-compatible with dmu_objset_type_t. * NB: this type should be kept binary-compatible with dmu_objset_type_t.
*/ */

1
include/libzutil.h
View File

@ -146,7 +146,6 @@ _LIBZUTIL_H int zpool_history_unpack(char *, uint64_t, uint64_t *, nvlist_t ***,
uint_t *); uint_t *);
struct zfs_cmd; struct zfs_cmd;
_LIBZUTIL_H int zfs_ioctl_fd(int fd, unsigned long request, struct zfs_cmd *zc);
/* /*
* List of colors to use * List of colors to use

1
include/os/freebsd/zfs/sys/zfs_ioctl_compat.h
View File

@ -148,7 +148,6 @@ nvlist_t *zfs_ioctl_compat_outnvl(zfs_cmd_t *, nvlist_t *, const int,
int zfs_ioctl_legacy_to_ozfs(int request); int zfs_ioctl_legacy_to_ozfs(int request);
int zfs_ioctl_ozfs_to_legacy(int request); int zfs_ioctl_ozfs_to_legacy(int request);
void zfs_cmd_legacy_to_ozfs(zfs_cmd_legacy_t *src, zfs_cmd_t *dst); void zfs_cmd_legacy_to_ozfs(zfs_cmd_legacy_t *src, zfs_cmd_t *dst);
void zfs_cmd_compat_get(zfs_cmd_t *, caddr_t, const int);
void zfs_cmd_ozfs_to_legacy(zfs_cmd_t *src, zfs_cmd_legacy_t *dst); void zfs_cmd_ozfs_to_legacy(zfs_cmd_t *src, zfs_cmd_legacy_t *dst);
void zfs_cmd_compat_put(zfs_cmd_t *, caddr_t, const int, const int); void zfs_cmd_compat_put(zfs_cmd_t *, caddr_t, const int, const int);

39
lib/Makefile.am
View File

@ -1,5 +1,44 @@
#
# Shown below is a simplified dependency graph of the OpenZFS provided
# libraries. Administrative commands (`zfs`, `zpool`, etc) interface with
# the kernel modules using the `libzfs.so` and `libzfs_core.so` libraries.
# These libraries provide a stable ABI across OpenZFS point releases.
#
# The `libzpool.so` library is a user space build of the DMU and SPA layers
# used to implement debugging tools (zdb) and code validation tools (ztest).
# These library interfaces are subject to change at any time.
#
#
# CMDS: zhack/ztest/zdb/ zfs/zpool/zed/
# raidz_{test,bench} zinject/zstream
# | |
# LIBS: | | libzfsbootenv*
# | | |
# | | |
# libzpool libzfs* ----------------+
# | | | \ / | | |
# libicp --/ | | \ / | | \------- libshare
# | | \ / | |
# libzstd ---/ | \ / | \--------- libuutil
# | \ / \ | |
# libunicode --/ \ / \ | |
# \ / \ | |
# libzutil libzfs_core* | |
# | | | | \ | | | |
# | | | | | | | | |
# | | | | | | | | |
# libtpool -------------/ | | | \---- libnvpair* | | |
# | | | | | |
# libefi -----------------/ | \------ libavl* --------/ |
# | | |
# \-------- libspl ----+------/
#
# * - A stable ABI is provided for these libraries
#
#
# NB: GNU Automake Manual, Chapter 8.3.5: Libtool Convenience Libraries # NB: GNU Automake Manual, Chapter 8.3.5: Libtool Convenience Libraries
# These nine libraries are intermediary build components. # These nine libraries are intermediary build components.
#
SUBDIRS = libavl libicp libshare libspl libtpool libzstd SUBDIRS = libavl libicp libshare libspl libtpool libzstd
CPPCHECKDIRS = libavl libicp libnvpair libshare libspl libtpool libunicode CPPCHECKDIRS = libavl libicp libnvpair libshare libspl libtpool libunicode
CPPCHECKDIRS += libuutil libzfs libzfs_core libzfsbootenv libzpool libzutil CPPCHECKDIRS += libuutil libzfs libzfs_core libzfsbootenv libzpool libzutil

2
lib/libzfs/Makefile.am
View File

@ -35,7 +35,6 @@ USER_C = \
if BUILD_FREEBSD if BUILD_FREEBSD
USER_C += \ USER_C += \
os/freebsd/libzfs_compat.c \ os/freebsd/libzfs_compat.c \
os/freebsd/libzfs_ioctl_compat.c \
os/freebsd/libzfs_zmount.c os/freebsd/libzfs_zmount.c
endif endif
@ -75,6 +74,7 @@ libzfs_la_LIBADD = \
$(abs_top_builddir)/lib/libshare/libshare.la \ $(abs_top_builddir)/lib/libshare/libshare.la \
$(abs_top_builddir)/lib/libzfs_core/libzfs_core.la \ $(abs_top_builddir)/lib/libzfs_core/libzfs_core.la \
$(abs_top_builddir)/lib/libnvpair/libnvpair.la \ $(abs_top_builddir)/lib/libnvpair/libnvpair.la \
$(abs_top_builddir)/lib/libzutil/libzutil.la \
$(abs_top_builddir)/lib/libuutil/libuutil.la $(abs_top_builddir)/lib/libuutil/libuutil.la
libzfs_la_LIBADD += -lm $(LIBCRYPTO_LIBS) $(ZLIB_LIBS) $(LIBFETCH_LIBS) $(LTLIBINTL) libzfs_la_LIBADD += -lm $(LIBCRYPTO_LIBS) $(ZLIB_LIBS) $(LIBFETCH_LIBS) $(LTLIBINTL)

1803
lib/libzfs/libzfs.abi
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File diff suppressed because it is too large Load Diff

3
lib/libzfs/os/freebsd/libzfs_compat.c
View File

@ -22,7 +22,6 @@
/* /*
* Copyright (c) 2013 Martin Matuska <mm@FreeBSD.org>. All rights reserved. * Copyright (c) 2013 Martin Matuska <mm@FreeBSD.org>. All rights reserved.
*/ */
#include <os/freebsd/zfs/sys/zfs_ioctl_compat.h>
#include "../../libzfs_impl.h" #include "../../libzfs_impl.h"
#include <libzfs.h> #include <libzfs.h>
#include <libzutil.h> #include <libzutil.h>
@ -224,7 +223,7 @@ libzfs_error_init(int error)
int int
zfs_ioctl(libzfs_handle_t *hdl, int request, zfs_cmd_t *zc) zfs_ioctl(libzfs_handle_t *hdl, int request, zfs_cmd_t *zc)
{ {
return (zfs_ioctl_fd(hdl->libzfs_fd, request, zc)); return (lzc_ioctl_fd(hdl->libzfs_fd, request, zc));
} }
/* /*

432
lib/libzfs/os/freebsd/libzfs_ioctl_compat.c
View File

@ -1,432 +0,0 @@
/*
* 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 2013 Xin Li <delphij@FreeBSD.org>. All rights reserved.
* Copyright 2013 Martin Matuska <mm@FreeBSD.org>. All rights reserved.
* Portions Copyright 2005, 2010, Oracle and/or its affiliates.
* All rights reserved.
* Use is subject to license terms.
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/cred.h>
#include <sys/dmu.h>
#include <sys/zio.h>
#include <sys/nvpair.h>
#include <sys/dsl_deleg.h>
#include <sys/zfs_ioctl.h>
#include "zfs_namecheck.h"
#include <os/freebsd/zfs/sys/zfs_ioctl_compat.h>
/*
* FreeBSD zfs_cmd compatibility with older binaries
* appropriately remap/extend the zfs_cmd_t structure
*/
void
zfs_cmd_compat_get(zfs_cmd_t *zc, caddr_t addr, const int cflag)
{
}
#if 0
static int
zfs_ioctl_compat_get_nvlist(uint64_t nvl, size_t size, int iflag,
nvlist_t **nvp)
{
char *packed;
int error;
nvlist_t *list = NULL;
/*
* Read in and unpack the user-supplied nvlist.
*/
if (size == 0)
return (EINVAL);
#ifdef _KERNEL
packed = kmem_alloc(size, KM_SLEEP);
if ((error = ddi_copyin((void *)(uintptr_t)nvl, packed, size,
iflag)) != 0) {
kmem_free(packed, size);
return (error);
}
#else
packed = (void *)(uintptr_t)nvl;
#endif
error = nvlist_unpack(packed, size, &list, 0);
#ifdef _KERNEL
kmem_free(packed, size);
#endif
if (error != 0)
return (error);
*nvp = list;
return (0);
}
static int
zfs_ioctl_compat_put_nvlist(zfs_cmd_t *zc, nvlist_t *nvl)
{
char *packed = NULL;
int error = 0;
size_t size;
VERIFY(nvlist_size(nvl, &size, NV_ENCODE_NATIVE) == 0);
#ifdef _KERNEL
packed = kmem_alloc(size, KM_SLEEP);
VERIFY(nvlist_pack(nvl, &packed, &size, NV_ENCODE_NATIVE,
KM_SLEEP) == 0);
if (ddi_copyout(packed,
(void *)(uintptr_t)zc->zc_nvlist_dst, size, zc->zc_iflags) != 0)
error = EFAULT;
kmem_free(packed, size);
#else
packed = (void *)(uintptr_t)zc->zc_nvlist_dst;
VERIFY(nvlist_pack(nvl, &packed, &size, NV_ENCODE_NATIVE,
0) == 0);
#endif
zc->zc_nvlist_dst_size = size;
return (error);
}
static void
zfs_ioctl_compat_fix_stats_nvlist(nvlist_t *nvl)
{
nvlist_t **child;
nvlist_t *nvroot = NULL;
vdev_stat_t *vs;
uint_t c, children, nelem;
if (nvlist_lookup_nvlist_array(nvl, ZPOOL_CONFIG_CHILDREN,
&child, &children) == 0) {
for (c = 0; c < children; c++) {
zfs_ioctl_compat_fix_stats_nvlist(child[c]);
}
}
if (nvlist_lookup_nvlist(nvl, ZPOOL_CONFIG_VDEV_TREE,
&nvroot) == 0)
zfs_ioctl_compat_fix_stats_nvlist(nvroot);
if ((nvlist_lookup_uint64_array(nvl, "stats",
(uint64_t **)&vs, &nelem) == 0)) {
nvlist_add_uint64_array(nvl,
ZPOOL_CONFIG_VDEV_STATS,
(uint64_t *)vs, nelem);
nvlist_remove(nvl, "stats",
DATA_TYPE_UINT64_ARRAY);
}
}
static int
zfs_ioctl_compat_fix_stats(zfs_cmd_t *zc, const int nc)
{
nvlist_t *nv, *nvp = NULL;
nvpair_t *elem;
int error;
if ((error = zfs_ioctl_compat_get_nvlist(zc->zc_nvlist_dst,
zc->zc_nvlist_dst_size, zc->zc_iflags, &nv)) != 0)
return (error);
if (nc == 5) { /* ZFS_IOC_POOL_STATS */
elem = NULL;
while ((elem = nvlist_next_nvpair(nv, elem)) != NULL) {
if (nvpair_value_nvlist(elem, &nvp) == 0)
zfs_ioctl_compat_fix_stats_nvlist(nvp);
}
elem = NULL;
} else
zfs_ioctl_compat_fix_stats_nvlist(nv);
error = zfs_ioctl_compat_put_nvlist(zc, nv);
nvlist_free(nv);
return (error);
}
static int
zfs_ioctl_compat_pool_get_props(zfs_cmd_t *zc)
{
nvlist_t *nv, *nva = NULL;
int error;
if ((error = zfs_ioctl_compat_get_nvlist(zc->zc_nvlist_dst,
zc->zc_nvlist_dst_size, zc->zc_iflags, &nv)) != 0)
return (error);
if (nvlist_lookup_nvlist(nv, "used", &nva) == 0) {
nvlist_add_nvlist(nv, "allocated", nva);
nvlist_remove(nv, "used", DATA_TYPE_NVLIST);
}
if (nvlist_lookup_nvlist(nv, "available", &nva) == 0) {
nvlist_add_nvlist(nv, "free", nva);
nvlist_remove(nv, "available", DATA_TYPE_NVLIST);
}
error = zfs_ioctl_compat_put_nvlist(zc, nv);
nvlist_free(nv);
return (error);
}
#endif
#ifdef _KERNEL
int
zfs_ioctl_compat_pre(zfs_cmd_t *zc, int *vec, const int cflag)
{
int error = 0;
/* are we creating a clone? */
if (*vec == ZFS_IOC_CREATE && zc->zc_value[0] != '\0')
*vec = ZFS_IOC_CLONE;
if (cflag == ZFS_CMD_COMPAT_V15) {
switch (*vec) {
case 7: /* ZFS_IOC_POOL_SCRUB (v15) */
zc->zc_cookie = POOL_SCAN_SCRUB;
break;
}
}
return (error);
}
void
zfs_ioctl_compat_post(zfs_cmd_t *zc, int vec, const int cflag)
{
if (cflag == ZFS_CMD_COMPAT_V15) {
switch (vec) {
case ZFS_IOC_POOL_CONFIGS:
case ZFS_IOC_POOL_STATS:
case ZFS_IOC_POOL_TRYIMPORT:
zfs_ioctl_compat_fix_stats(zc, vec);
break;
case 41: /* ZFS_IOC_POOL_GET_PROPS (v15) */
zfs_ioctl_compat_pool_get_props(zc);
break;
}
}
}
nvlist_t *
zfs_ioctl_compat_innvl(zfs_cmd_t *zc, nvlist_t *innvl, const int vec,
const int cflag)
{
nvlist_t *nvl, *tmpnvl, *hnvl;
nvpair_t *elem;
char *poolname, *snapname;
int err;
if (cflag == ZFS_CMD_COMPAT_NONE || cflag == ZFS_CMD_COMPAT_LZC ||
cflag == ZFS_CMD_COMPAT_ZCMD || cflag == ZFS_CMD_COMPAT_EDBP ||
cflag == ZFS_CMD_COMPAT_RESUME || cflag == ZFS_CMD_COMPAT_INLANES)
goto out;
switch (vec) {
case ZFS_IOC_CREATE:
nvl = fnvlist_alloc();
fnvlist_add_int32(nvl, "type", zc->zc_objset_type);
if (innvl != NULL) {
fnvlist_add_nvlist(nvl, "props", innvl);
nvlist_free(innvl);
}
return (nvl);
break;
case ZFS_IOC_CLONE:
nvl = fnvlist_alloc();
fnvlist_add_string(nvl, "origin", zc->zc_value);
if (innvl != NULL) {
fnvlist_add_nvlist(nvl, "props", innvl);
nvlist_free(innvl);
}
return (nvl);
break;
case ZFS_IOC_SNAPSHOT:
if (innvl == NULL)
goto out;
nvl = fnvlist_alloc();
fnvlist_add_nvlist(nvl, "props", innvl);
tmpnvl = fnvlist_alloc();
snapname = kmem_asprintf("%s@%s", zc->zc_name, zc->zc_value);
fnvlist_add_boolean(tmpnvl, snapname);
kmem_free(snapname, strlen(snapname + 1));
/* check if we are doing a recursive snapshot */
if (zc->zc_cookie)
dmu_get_recursive_snaps_nvl(zc->zc_name, zc->zc_value,
tmpnvl);
fnvlist_add_nvlist(nvl, "snaps", tmpnvl);
fnvlist_free(tmpnvl);
nvlist_free(innvl);
/* strip dataset part from zc->zc_name */
zc->zc_name[strcspn(zc->zc_name, "/@")] = '\0';
return (nvl);
break;
case ZFS_IOC_SPACE_SNAPS:
nvl = fnvlist_alloc();
fnvlist_add_string(nvl, "firstsnap", zc->zc_value);
if (innvl != NULL)
nvlist_free(innvl);
return (nvl);
break;
case ZFS_IOC_DESTROY_SNAPS:
if (innvl == NULL && cflag == ZFS_CMD_COMPAT_DEADMAN)
goto out;
nvl = fnvlist_alloc();
if (innvl != NULL) {
fnvlist_add_nvlist(nvl, "snaps", innvl);
} else {
/*
* We are probably called by even older binaries,
* allocate and populate nvlist with recursive
* snapshots
*/
if (zfs_component_namecheck(zc->zc_value, NULL,
NULL) == 0) {
tmpnvl = fnvlist_alloc();
if (dmu_get_recursive_snaps_nvl(zc->zc_name,
zc->zc_value, tmpnvl) == 0)
fnvlist_add_nvlist(nvl, "snaps",
tmpnvl);
nvlist_free(tmpnvl);
}
}
if (innvl != NULL)
nvlist_free(innvl);
/* strip dataset part from zc->zc_name */
zc->zc_name[strcspn(zc->zc_name, "/@")] = '\0';
return (nvl);
break;
case ZFS_IOC_HOLD:
nvl = fnvlist_alloc();
tmpnvl = fnvlist_alloc();
if (zc->zc_cleanup_fd != -1)
fnvlist_add_int32(nvl, "cleanup_fd",
(int32_t)zc->zc_cleanup_fd);
if (zc->zc_cookie) {
hnvl = fnvlist_alloc();
if (dmu_get_recursive_snaps_nvl(zc->zc_name,
zc->zc_value, hnvl) == 0) {
elem = NULL;
while ((elem = nvlist_next_nvpair(hnvl,
elem)) != NULL) {
nvlist_add_string(tmpnvl,
nvpair_name(elem), zc->zc_string);
}
}
nvlist_free(hnvl);
} else {
snapname = kmem_asprintf("%s@%s", zc->zc_name,
zc->zc_value);
nvlist_add_string(tmpnvl, snapname, zc->zc_string);
kmem_free(snapname, strlen(snapname + 1));
}
fnvlist_add_nvlist(nvl, "holds", tmpnvl);
nvlist_free(tmpnvl);
if (innvl != NULL)
nvlist_free(innvl);
/* strip dataset part from zc->zc_name */
zc->zc_name[strcspn(zc->zc_name, "/@")] = '\0';
return (nvl);
break;
case ZFS_IOC_RELEASE:
nvl = fnvlist_alloc();
tmpnvl = fnvlist_alloc();
if (zc->zc_cookie) {
hnvl = fnvlist_alloc();
if (dmu_get_recursive_snaps_nvl(zc->zc_name,
zc->zc_value, hnvl) == 0) {
elem = NULL;
while ((elem = nvlist_next_nvpair(hnvl,
elem)) != NULL) {
fnvlist_add_boolean(tmpnvl,
zc->zc_string);
fnvlist_add_nvlist(nvl,
nvpair_name(elem), tmpnvl);
}
}
nvlist_free(hnvl);
} else {
snapname = kmem_asprintf("%s@%s", zc->zc_name,
zc->zc_value);
fnvlist_add_boolean(tmpnvl, zc->zc_string);
fnvlist_add_nvlist(nvl, snapname, tmpnvl);
kmem_free(snapname, strlen(snapname + 1));
}
nvlist_free(tmpnvl);
if (innvl != NULL)
nvlist_free(innvl);
/* strip dataset part from zc->zc_name */
zc->zc_name[strcspn(zc->zc_name, "/@")] = '\0';
return (nvl);
break;
}
out:
return (innvl);
}
nvlist_t *
zfs_ioctl_compat_outnvl(zfs_cmd_t *zc, nvlist_t *outnvl, const int vec,
const int cflag)
{
nvlist_t *tmpnvl;
if (cflag == ZFS_CMD_COMPAT_NONE || cflag == ZFS_CMD_COMPAT_LZC ||
cflag == ZFS_CMD_COMPAT_ZCMD || cflag == ZFS_CMD_COMPAT_EDBP ||
cflag == ZFS_CMD_COMPAT_RESUME || cflag == ZFS_CMD_COMPAT_INLANES)
return (outnvl);
switch (vec) {
case ZFS_IOC_SPACE_SNAPS:
(void) nvlist_lookup_uint64(outnvl, "used", &zc->zc_cookie);
(void) nvlist_lookup_uint64(outnvl, "compressed",
&zc->zc_objset_type);
(void) nvlist_lookup_uint64(outnvl, "uncompressed",
&zc->zc_perm_action);
nvlist_free(outnvl);
/* return empty outnvl */
tmpnvl = fnvlist_alloc();
return (tmpnvl);
break;
case ZFS_IOC_CREATE:
case ZFS_IOC_CLONE:
case ZFS_IOC_HOLD:
case ZFS_IOC_RELEASE:
nvlist_free(outnvl);
/* return empty outnvl */
tmpnvl = fnvlist_alloc();
return (tmpnvl);
break;
}
return (outnvl);
}
#endif /* KERNEL */

20
lib/libzfs_core/Makefile.am
View File

@ -11,11 +11,27 @@ include $(top_srcdir)/config/Abigail.am
USER_C = \ USER_C = \
libzfs_core.c libzfs_core.c
if BUILD_LINUX
USER_C += \
os/linux/libzfs_core_ioctl.c
endif
if BUILD_FREEBSD
DEFAULT_INCLUDES += -I$(top_srcdir)/include/os/freebsd/zfs
USER_C += \
os/freebsd/libzfs_core_ioctl.c
VPATH += $(top_srcdir)/module/os/freebsd/zfs
nodist_libzfs_core_la_SOURCES = zfs_ioctl_compat.c
endif
libzfs_core_la_SOURCES = $(USER_C) libzfs_core_la_SOURCES = $(USER_C)
libzfs_core_la_LIBADD = \ libzfs_core_la_LIBADD = \
$(abs_top_builddir)/lib/libzutil/libzutil.la \ $(abs_top_builddir)/lib/libnvpair/libnvpair.la \
$(abs_top_builddir)/lib/libnvpair/libnvpair.la $(abs_top_builddir)/lib/libspl/libspl.la
libzfs_core_la_LIBADD += $(LTLIBINTL) libzfs_core_la_LIBADD += $(LTLIBINTL)

946
lib/libzfs_core/libzfs_core.abi
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File diff suppressed because it is too large Load Diff

10
lib/libzfs_core/libzfs_core.c
View File

@ -209,7 +209,7 @@ lzc_ioctl(zfs_ioc_t ioc, const char *name,
} }
} }
while (zfs_ioctl_fd(g_fd, ioc, &zc) != 0) { while (lzc_ioctl_fd(g_fd, ioc, &zc) != 0) {
/* /*
* If ioctl exited with ENOMEM, we retry the ioctl after * If ioctl exited with ENOMEM, we retry the ioctl after
* increasing the size of the destination nvlist. * increasing the size of the destination nvlist.
@ -298,7 +298,7 @@ lzc_promote(const char *fsname, char *snapnamebuf, int snapnamelen)
VERIFY3S(g_fd, !=, -1); VERIFY3S(g_fd, !=, -1);
(void) strlcpy(zc.zc_name, fsname, sizeof (zc.zc_name)); (void) strlcpy(zc.zc_name, fsname, sizeof (zc.zc_name));
if (zfs_ioctl_fd(g_fd, ZFS_IOC_PROMOTE, &zc) != 0) { if (lzc_ioctl_fd(g_fd, ZFS_IOC_PROMOTE, &zc) != 0) {
int error = errno; int error = errno;
if (error == EEXIST && snapnamebuf != NULL) if (error == EEXIST && snapnamebuf != NULL)
(void) strlcpy(snapnamebuf, zc.zc_string, snapnamelen); (void) strlcpy(snapnamebuf, zc.zc_string, snapnamelen);
@ -317,7 +317,7 @@ lzc_rename(const char *source, const char *target)
VERIFY3S(g_fd, !=, -1); VERIFY3S(g_fd, !=, -1);
(void) strlcpy(zc.zc_name, source, sizeof (zc.zc_name)); (void) strlcpy(zc.zc_name, source, sizeof (zc.zc_name));
(void) strlcpy(zc.zc_value, target, sizeof (zc.zc_value)); (void) strlcpy(zc.zc_value, target, sizeof (zc.zc_value));
error = zfs_ioctl_fd(g_fd, ZFS_IOC_RENAME, &zc); error = lzc_ioctl_fd(g_fd, ZFS_IOC_RENAME, &zc);
if (error != 0) if (error != 0)
error = errno; error = errno;
return (error); return (error);
@ -468,7 +468,7 @@ lzc_exists(const char *dataset)
VERIFY3S(g_fd, !=, -1); VERIFY3S(g_fd, !=, -1);
(void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name)); (void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name));
return (zfs_ioctl_fd(g_fd, ZFS_IOC_OBJSET_STATS, &zc) == 0); return (lzc_ioctl_fd(g_fd, ZFS_IOC_OBJSET_STATS, &zc) == 0);
} }
/* /*
@ -925,7 +925,7 @@ recv_impl(const char *snapname, nvlist_t *recvdprops, nvlist_t *localprops,
zc.zc_nvlist_dst = (uint64_t)(uintptr_t) zc.zc_nvlist_dst = (uint64_t)(uintptr_t)
malloc(zc.zc_nvlist_dst_size); malloc(zc.zc_nvlist_dst_size);
error = zfs_ioctl_fd(g_fd, ZFS_IOC_RECV, &zc); error = lzc_ioctl_fd(g_fd, ZFS_IOC_RECV, &zc);
if (error != 0) { if (error != 0) {
error = errno; error = errno;
} else { } else {

5
lib/libzutil/os/freebsd/zutil_compat.c → lib/libzfs_core/os/freebsd/libzfs_core_ioctl.c
View File

@ -23,9 +23,8 @@
#include <sys/sysctl.h> #include <sys/sysctl.h>
#include <sys/zfs_ioctl.h> #include <sys/zfs_ioctl.h>
#include <os/freebsd/zfs/sys/zfs_ioctl_compat.h> #include <os/freebsd/zfs/sys/zfs_ioctl_compat.h>
#include <libzutil.h>
#include <err.h> #include <err.h>
#include <libzfs_core.h>
int zfs_ioctl_version = ZFS_IOCVER_UNDEF; int zfs_ioctl_version = ZFS_IOCVER_UNDEF;
@ -92,7 +91,7 @@ zcmd_ioctl_compat(int fd, int request, zfs_cmd_t *zc, const int cflag)
* error is returned zc_nvlist_dst_size won't be updated. * error is returned zc_nvlist_dst_size won't be updated.
*/ */
int int
zfs_ioctl_fd(int fd, unsigned long request, zfs_cmd_t *zc) lzc_ioctl_fd(int fd, unsigned long request, zfs_cmd_t *zc)
{ {
size_t oldsize; size_t oldsize;
int ret, cflag = ZFS_CMD_COMPAT_NONE; int ret, cflag = ZFS_CMD_COMPAT_NONE;

4
lib/libzutil/os/linux/zutil_compat.c → lib/libzfs_core/os/linux/libzfs_core_ioctl.c
View File

@ -21,10 +21,10 @@
#include <sys/types.h> #include <sys/types.h>
#include <sys/param.h> #include <sys/param.h>
#include <sys/zfs_ioctl.h> #include <sys/zfs_ioctl.h>
#include <libzutil.h> #include <libzfs_core.h>
int int
zfs_ioctl_fd(int fd, unsigned long request, zfs_cmd_t *zc) lzc_ioctl_fd(int fd, unsigned long request, zfs_cmd_t *zc)
{ {
return (ioctl(fd, request, zc)); return (ioctl(fd, request, zc));
} }

4
lib/libzpool/Makefile.am
View File

@ -214,9 +214,9 @@ nodist_libzpool_la_SOURCES = \
libzpool_la_LIBADD = \ libzpool_la_LIBADD = \
$(abs_top_builddir)/lib/libicp/libicp.la \ $(abs_top_builddir)/lib/libicp/libicp.la \
$(abs_top_builddir)/lib/libunicode/libunicode.la \ $(abs_top_builddir)/lib/libunicode/libunicode.la \
$(abs_top_builddir)/lib/libzfs_core/libzfs_core.la \
$(abs_top_builddir)/lib/libnvpair/libnvpair.la \ $(abs_top_builddir)/lib/libnvpair/libnvpair.la \
$(abs_top_builddir)/lib/libzstd/libzstd.la $(abs_top_builddir)/lib/libzstd/libzstd.la \
$(abs_top_builddir)/lib/libzutil/libzutil.la
libzpool_la_LIBADD += $(LIBCLOCK_GETTIME) $(ZLIB_LIBS) -ldl -lm libzpool_la_LIBADD += $(LIBCLOCK_GETTIME) $(ZLIB_LIBS) -ldl -lm

102
lib/libzpool/util.c
View File

@ -245,39 +245,96 @@ refresh_config(void *unused, nvlist_t *tryconfig)
return (spa_tryimport(tryconfig)); return (spa_tryimport(tryconfig));
} }
#if defined(__FreeBSD__)
#include <sys/param.h>
#include <sys/sysctl.h>
#include <os/freebsd/zfs/sys/zfs_ioctl_compat.h>
static int
pool_active(void *unused, const char *name, uint64_t guid, boolean_t *isactive)
{
zfs_iocparm_t zp;
zfs_cmd_t *zc = NULL;
zfs_cmd_legacy_t *zcl = NULL;
unsigned long request;
int ret;
int fd = open(ZFS_DEV, O_RDWR | O_CLOEXEC);
if (fd < 0)
return (-1);
/*
* Use ZFS_IOC_POOL_STATS to check if the pool is active. We want to
* avoid adding a dependency on libzfs_core solely for this ioctl(),
* therefore we manually craft the stats command. Note that the command
* ID is identical between the openzfs and legacy ioctl() formats.
*/
int ver = ZFS_IOCVER_NONE;
size_t ver_size = sizeof (ver);
sysctlbyname("vfs.zfs.version.ioctl", &ver, &ver_size, NULL, 0);
switch (ver) {
case ZFS_IOCVER_OZFS:
zc = umem_zalloc(sizeof (zfs_cmd_t), UMEM_NOFAIL);
(void) strlcpy(zc->zc_name, name, sizeof (zc->zc_name));
zp.zfs_cmd = (uint64_t)(uintptr_t)zc;
zp.zfs_cmd_size = sizeof (zfs_cmd_t);
zp.zfs_ioctl_version = ZFS_IOCVER_OZFS;
request = _IOWR('Z', ZFS_IOC_POOL_STATS, zfs_iocparm_t);
ret = ioctl(fd, request, &zp);
free((void *)(uintptr_t)zc->zc_nvlist_dst);
umem_free(zc, sizeof (zfs_cmd_t));
break;
case ZFS_IOCVER_LEGACY:
zcl = umem_zalloc(sizeof (zfs_cmd_legacy_t), UMEM_NOFAIL);
(void) strlcpy(zcl->zc_name, name, sizeof (zcl->zc_name));
zp.zfs_cmd = (uint64_t)(uintptr_t)zcl;
zp.zfs_cmd_size = sizeof (zfs_cmd_legacy_t);
zp.zfs_ioctl_version = ZFS_IOCVER_LEGACY;
request = _IOWR('Z', ZFS_IOC_POOL_STATS, zfs_iocparm_t);
ret = ioctl(fd, request, &zp);
free((void *)(uintptr_t)zcl->zc_nvlist_dst);
umem_free(zcl, sizeof (zfs_cmd_legacy_t));
break;
default:
fprintf(stderr, "unrecognized zfs ioctl version %d", ver);
exit(1);
}
(void) close(fd);
*isactive = (ret == 0);
return (0);
}
#else
static int static int
pool_active(void *unused, const char *name, uint64_t guid, pool_active(void *unused, const char *name, uint64_t guid,
boolean_t *isactive) boolean_t *isactive)
{ {
zfs_cmd_t *zcp; int fd = open(ZFS_DEV, O_RDWR | O_CLOEXEC);
nvlist_t *innvl;
char *packed = NULL;
size_t size = 0;
int fd, ret;
/*
* Use ZFS_IOC_POOL_SYNC to confirm if a pool is active
*/
fd = open(ZFS_DEV, O_RDWR | O_CLOEXEC);
if (fd < 0) if (fd < 0)
return (-1); return (-1);
zcp = umem_zalloc(sizeof (zfs_cmd_t), UMEM_NOFAIL); /*
* Use ZFS_IOC_POOL_STATS to check if a pool is active.
innvl = fnvlist_alloc(); */
fnvlist_add_boolean_value(innvl, "force", B_FALSE); zfs_cmd_t *zcp = umem_zalloc(sizeof (zfs_cmd_t), UMEM_NOFAIL);
(void) strlcpy(zcp->zc_name, name, sizeof (zcp->zc_name)); (void) strlcpy(zcp->zc_name, name, sizeof (zcp->zc_name));
packed = fnvlist_pack(innvl, &size);
zcp->zc_nvlist_src = (uint64_t)(uintptr_t)packed;
zcp->zc_nvlist_src_size = size;
ret = zfs_ioctl_fd(fd, ZFS_IOC_POOL_SYNC, zcp); int ret = ioctl(fd, ZFS_IOC_POOL_STATS, zcp);
fnvlist_pack_free(packed, size);
free((void *)(uintptr_t)zcp->zc_nvlist_dst); free((void *)(uintptr_t)zcp->zc_nvlist_dst);
nvlist_free(innvl);
umem_free(zcp, sizeof (zfs_cmd_t)); umem_free(zcp, sizeof (zfs_cmd_t));
(void) close(fd); (void) close(fd);
@ -286,6 +343,7 @@ pool_active(void *unused, const char *name, uint64_t guid,
return (0); return (0);
} }
#endif
const pool_config_ops_t libzpool_config_ops = { const pool_config_ops_t libzpool_config_ops = {
.pco_refresh_config = refresh_config, .pco_refresh_config = refresh_config,

12
lib/libzutil/Makefile.am
View File

@ -19,21 +19,13 @@ USER_C = \
if BUILD_LINUX if BUILD_LINUX
USER_C += \ USER_C += \
os/linux/zutil_device_path_os.c \ os/linux/zutil_device_path_os.c \
os/linux/zutil_import_os.c \ os/linux/zutil_import_os.c
os/linux/zutil_compat.c
endif endif
if BUILD_FREEBSD if BUILD_FREEBSD
DEFAULT_INCLUDES += -I$(top_srcdir)/include/os/freebsd/zfs
USER_C += \ USER_C += \
os/freebsd/zutil_device_path_os.c \ os/freebsd/zutil_device_path_os.c \
os/freebsd/zutil_import_os.c \ os/freebsd/zutil_import_os.c
os/freebsd/zutil_compat.c
VPATH += $(top_srcdir)/module/os/freebsd/zfs
nodist_libzutil_la_SOURCES = zfs_ioctl_compat.c
endif endif
libzutil_la_SOURCES = $(USER_C) libzutil_la_SOURCES = $(USER_C)

6
tests/zfs-tests/cmd/libzfs_input_check/libzfs_input_check.c
View File

@ -159,7 +159,7 @@ lzc_ioctl_run(zfs_ioc_t ioc, const char *name, nvlist_t *innvl, int expected)
zc.zc_nvlist_dst_size = MAX(size * 2, 128 * 1024); zc.zc_nvlist_dst_size = MAX(size * 2, 128 * 1024);
zc.zc_nvlist_dst = (uint64_t)(uintptr_t)malloc(zc.zc_nvlist_dst_size); zc.zc_nvlist_dst = (uint64_t)(uintptr_t)malloc(zc.zc_nvlist_dst_size);
if (zfs_ioctl_fd(zfs_fd, ioc, &zc) != 0) if (lzc_ioctl_fd(zfs_fd, ioc, &zc) != 0)
error = errno; error = errno;
if (error != expected) { if (error != expected) {
@ -692,7 +692,7 @@ zfs_destroy(const char *dataset)
(void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name)); (void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name));
zc.zc_name[sizeof (zc.zc_name) - 1] = '\0'; zc.zc_name[sizeof (zc.zc_name) - 1] = '\0';
err = zfs_ioctl_fd(zfs_fd, ZFS_IOC_DESTROY, &zc); err = lzc_ioctl_fd(zfs_fd, ZFS_IOC_DESTROY, &zc);
return (err == 0 ? 0 : errno); return (err == 0 ? 0 : errno);
} }
@ -900,7 +900,7 @@ zfs_ioc_input_tests(const char *pool)
if (ioc_tested[cmd]) if (ioc_tested[cmd])
continue; continue;
if (zfs_ioctl_fd(zfs_fd, ioc, &zc) != 0 && if (lzc_ioctl_fd(zfs_fd, ioc, &zc) != 0 &&
errno != ZFS_ERR_IOC_CMD_UNAVAIL) { errno != ZFS_ERR_IOC_CMD_UNAVAIL) {
(void) fprintf(stderr, "cmd %d is missing a test case " (void) fprintf(stderr, "cmd %d is missing a test case "
"(%d)\n", cmd, errno); "(%d)\n", cmd, errno);

2
tests/zfs-tests/cmd/mkbusy/Makefile.am
View File

@ -4,5 +4,3 @@ pkgexecdir = $(datadir)/@PACKAGE@/zfs-tests/bin
pkgexec_PROGRAMS = mkbusy pkgexec_PROGRAMS = mkbusy
mkbusy_SOURCES = mkbusy.c mkbusy_SOURCES = mkbusy.c
mkbusy_LDADD = $(abs_top_builddir)/lib/libzfs_core/libzfs_core.la

20
tests/zfs-tests/cmd/mkbusy/mkbusy.c
View File

@ -29,7 +29,6 @@
#include <unistd.h> #include <unistd.h>
#include <errno.h> #include <errno.h>
#include <string.h> #include <string.h>
#include <libzutil.h>
static __attribute__((noreturn)) void static __attribute__((noreturn)) void
@ -64,6 +63,21 @@ daemonize(void)
(void) close(2); (void) close(2);
} }
static const char *
get_basename(const char *path)
{
const char *bn = strrchr(path, '/');
return (bn ? bn + 1 : path);
}
static ssize_t
get_dirnamelen(const char *path)
{
const char *end = strrchr(path, '/');
return (end ? end - path : -1);
}
int int
main(int argc, char *argv[]) main(int argc, char *argv[])
{ {
@ -103,9 +117,9 @@ main(int argc, char *argv[])
arg[arglen - 1] = '\0'; arg[arglen - 1] = '\0';
/* Get the directory and file names. */ /* Get the directory and file names. */
fname = zfs_basename(arg); fname = get_basename(arg);
dname = arg; dname = arg;
if ((dnamelen = zfs_dirnamelen(arg)) != -1) if ((dnamelen = get_dirnamelen(arg)) != -1)
arg[dnamelen] = '\0'; arg[dnamelen] = '\0';
else else
dname = "."; dname = ".";

2
tests/zfs-tests/tests/functional/ctime/Makefile.am
View File

@ -11,5 +11,3 @@ pkgexecdir = $(datadir)/@PACKAGE@/zfs-tests/tests/functional/ctime
pkgexec_PROGRAMS = ctime pkgexec_PROGRAMS = ctime
ctime_SOURCES = ctime.c ctime_SOURCES = ctime.c
ctime_LDADD = $(abs_top_builddir)/lib/libzfs_core/libzfs_core.la

10
tests/zfs-tests/tests/functional/ctime/ctime.c
View File

@ -37,7 +37,6 @@
#include <utime.h> #include <utime.h>
#include <stdio.h> #include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
#include <libzutil.h>
#include <unistd.h> #include <unistd.h>
#include <strings.h> #include <strings.h>
#include <errno.h> #include <errno.h>
@ -98,6 +97,13 @@ get_file_time(const char *pfile, int what, time_t *ptr)
} }
} }
static ssize_t
get_dirnamelen(const char *path)
{
const char *end = strrchr(path, '/');
return (end ? end - path : -1);
}
static int static int
do_read(const char *pfile) do_read(const char *pfile)
{ {
@ -161,7 +167,7 @@ do_link(const char *pfile)
* the link file in the same directory. * the link file in the same directory.
*/ */
(void) snprintf(link_file, sizeof (link_file), (void) snprintf(link_file, sizeof (link_file),
"%.*s/%s", (int)zfs_dirnamelen(pfile), pfile, "link_file"); "%.*s/%s", (int)get_dirnamelen(pfile), pfile, "link_file");
if (link(pfile, link_file) == -1) { if (link(pfile, link_file) == -1) {
(void) fprintf(stderr, "link(%s, %s) failed with errno %d\n", (void) fprintf(stderr, "link(%s, %s) failed with errno %d\n",