diff options
Diffstat (limited to 'cddl/contrib/opensolaris/lib/libzfs_core/common')
4 files changed, 0 insertions, 1584 deletions
diff --git a/cddl/contrib/opensolaris/lib/libzfs_core/common/libzfs_core.c b/cddl/contrib/opensolaris/lib/libzfs_core/common/libzfs_core.c deleted file mode 100644 index 2a6b5cc5927c..000000000000 --- a/cddl/contrib/opensolaris/lib/libzfs_core/common/libzfs_core.c +++ /dev/null @@ -1,1234 +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 (c) 2012, 2020 by Delphix. All rights reserved. - * Copyright (c) 2013 Steven Hartland. All rights reserved. - * Copyright (c) 2014 Integros [integros.com] - * Copyright 2017 RackTop Systems. - * Copyright (c) 2017 Datto Inc. - */ - -/* - * LibZFS_Core (lzc) is intended to replace most functionality in libzfs. - * It has the following characteristics: - * - * - Thread Safe. libzfs_core is accessible concurrently from multiple - * threads. This is accomplished primarily by avoiding global data - * (e.g. caching). Since it's thread-safe, there is no reason for a - * process to have multiple libzfs "instances". Therefore, we store - * our few pieces of data (e.g. the file descriptor) in global - * variables. The fd is reference-counted so that the libzfs_core - * library can be "initialized" multiple times (e.g. by different - * consumers within the same process). - * - * - Committed Interface. The libzfs_core interface will be committed, - * therefore consumers can compile against it and be confident that - * their code will continue to work on future releases of this code. - * Currently, the interface is Evolving (not Committed), but we intend - * to commit to it once it is more complete and we determine that it - * meets the needs of all consumers. - * - * - Programatic Error Handling. libzfs_core communicates errors with - * defined error numbers, and doesn't print anything to stdout/stderr. - * - * - Thin Layer. libzfs_core is a thin layer, marshaling arguments - * to/from the kernel ioctls. There is generally a 1:1 correspondence - * between libzfs_core functions and ioctls to /dev/zfs. - * - * - Clear Atomicity. Because libzfs_core functions are generally 1:1 - * with kernel ioctls, and kernel ioctls are general atomic, each - * libzfs_core function is atomic. For example, creating multiple - * snapshots with a single call to lzc_snapshot() is atomic -- it - * can't fail with only some of the requested snapshots created, even - * in the event of power loss or system crash. - * - * - Continued libzfs Support. Some higher-level operations (e.g. - * support for "zfs send -R") are too complicated to fit the scope of - * libzfs_core. This functionality will continue to live in libzfs. - * Where appropriate, libzfs will use the underlying atomic operations - * of libzfs_core. For example, libzfs may implement "zfs send -R | - * zfs receive" by using individual "send one snapshot", rename, - * destroy, and "receive one snapshot" operations in libzfs_core. - * /sbin/zfs and /zbin/zpool will link with both libzfs and - * libzfs_core. Other consumers should aim to use only libzfs_core, - * since that will be the supported, stable interface going forwards. - */ - -#define _IN_LIBZFS_CORE_ - -#include <libzfs_core.h> -#include <ctype.h> -#include <unistd.h> -#include <stdlib.h> -#include <string.h> -#ifdef ZFS_DEBUG -#include <stdio.h> -#endif -#include <errno.h> -#include <fcntl.h> -#include <pthread.h> -#include <sys/nvpair.h> -#include <sys/param.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <sys/zfs_ioctl.h> -#include "libzfs_core_compat.h" -#include "libzfs_compat.h" - -#ifdef __FreeBSD__ -extern int zfs_ioctl_version; -#endif - -static int g_fd = -1; -static pthread_mutex_t g_lock = PTHREAD_MUTEX_INITIALIZER; -static int g_refcount; - -#ifdef ZFS_DEBUG -static zfs_ioc_t fail_ioc_cmd; -static zfs_errno_t fail_ioc_err; - -static void -libzfs_core_debug_ioc(void) -{ - /* - * To test running newer user space binaries with kernel's - * that don't yet support an ioctl or a new ioctl arg we - * provide an override to intentionally fail an ioctl. - * - * USAGE: - * The override variable, ZFS_IOC_TEST, is of the form "cmd:err" - * - * For example, to fail a ZFS_IOC_POOL_CHECKPOINT with a - * ZFS_ERR_IOC_CMD_UNAVAIL, the string would be "0x5a4d:1029" - * - * $ sudo sh -c "ZFS_IOC_TEST=0x5a4d:1029 zpool checkpoint tank" - * cannot checkpoint 'tank': the loaded zfs module does not support - * this operation. A reboot may be required to enable this operation. - */ - if (fail_ioc_cmd == 0) { - char *ioc_test = getenv("ZFS_IOC_TEST"); - unsigned int ioc_num = 0, ioc_err = 0; - - if (ioc_test != NULL && - sscanf(ioc_test, "%i:%i", &ioc_num, &ioc_err) == 2 && - ioc_num < ZFS_IOC_LAST) { - fail_ioc_cmd = ioc_num; - fail_ioc_err = ioc_err; - } - } -} -#endif - -int -libzfs_core_init(void) -{ - (void) pthread_mutex_lock(&g_lock); - if (g_refcount == 0) { - g_fd = open("/dev/zfs", O_RDWR); - if (g_fd < 0) { - (void) pthread_mutex_unlock(&g_lock); - return (errno); - } - } - g_refcount++; - -#ifdef ZFS_DEBUG - libzfs_core_debug_ioc(); -#endif - (void) pthread_mutex_unlock(&g_lock); - - return (0); -} - -void -libzfs_core_fini(void) -{ - (void) pthread_mutex_lock(&g_lock); - ASSERT3S(g_refcount, >, 0); - - if (g_refcount > 0) - g_refcount--; - - if (g_refcount == 0 && g_fd != -1) { - (void) close(g_fd); - g_fd = -1; - } - (void) pthread_mutex_unlock(&g_lock); -} - -static int -lzc_ioctl(zfs_ioc_t ioc, const char *name, - nvlist_t *source, nvlist_t **resultp) -{ - zfs_cmd_t zc = { 0 }; - int error = 0; - char *packed = NULL; -#ifdef __FreeBSD__ - nvlist_t *oldsource; -#endif - size_t size = 0; - - ASSERT3S(g_refcount, >, 0); - VERIFY3S(g_fd, !=, -1); - -#ifdef ZFS_DEBUG - if (ioc == fail_ioc_cmd) - return (fail_ioc_err); -#endif - - if (name != NULL) - (void) strlcpy(zc.zc_name, name, sizeof (zc.zc_name)); - -#ifdef __FreeBSD__ - if (zfs_ioctl_version == ZFS_IOCVER_UNDEF) - zfs_ioctl_version = get_zfs_ioctl_version(); - - if (zfs_ioctl_version < ZFS_IOCVER_LZC) { - oldsource = source; - error = lzc_compat_pre(&zc, &ioc, &source); - if (error) - return (error); - } -#endif - - if (source != NULL) { - packed = fnvlist_pack(source, &size); - zc.zc_nvlist_src = (uint64_t)(uintptr_t)packed; - zc.zc_nvlist_src_size = size; - } - - if (resultp != NULL) { - *resultp = NULL; - if (ioc == ZFS_IOC_CHANNEL_PROGRAM) { - zc.zc_nvlist_dst_size = fnvlist_lookup_uint64(source, - ZCP_ARG_MEMLIMIT); - } else { - zc.zc_nvlist_dst_size = MAX(size * 2, 128 * 1024); - } - zc.zc_nvlist_dst = (uint64_t)(uintptr_t) - malloc(zc.zc_nvlist_dst_size); -#ifdef illumos - if (zc.zc_nvlist_dst == NULL) { -#else - if (zc.zc_nvlist_dst == 0) { -#endif - error = ENOMEM; - goto out; - } - } - - while (ioctl(g_fd, ioc, &zc) != 0) { - /* - * If ioctl exited with ENOMEM, we retry the ioctl after - * increasing the size of the destination nvlist. - * - * Channel programs that exit with ENOMEM ran over the - * lua memory sandbox; they should not be retried. - */ - if (errno == ENOMEM && resultp != NULL && - ioc != ZFS_IOC_CHANNEL_PROGRAM) { - free((void *)(uintptr_t)zc.zc_nvlist_dst); - zc.zc_nvlist_dst_size *= 2; - zc.zc_nvlist_dst = (uint64_t)(uintptr_t) - malloc(zc.zc_nvlist_dst_size); -#ifdef illumos - if (zc.zc_nvlist_dst == NULL) { -#else - if (zc.zc_nvlist_dst == 0) { -#endif - error = ENOMEM; - goto out; - } - } else { - error = errno; - break; - } - } - -#ifdef __FreeBSD__ - if (zfs_ioctl_version < ZFS_IOCVER_LZC) - lzc_compat_post(&zc, ioc); -#endif - if (zc.zc_nvlist_dst_filled) { - *resultp = fnvlist_unpack((void *)(uintptr_t)zc.zc_nvlist_dst, - zc.zc_nvlist_dst_size); - } -#ifdef __FreeBSD__ - if (zfs_ioctl_version < ZFS_IOCVER_LZC) - lzc_compat_outnvl(&zc, ioc, resultp); -#endif -out: -#ifdef __FreeBSD__ - if (zfs_ioctl_version < ZFS_IOCVER_LZC) { - if (source != oldsource) - nvlist_free(source); - source = oldsource; - } -#endif - fnvlist_pack_free(packed, size); - free((void *)(uintptr_t)zc.zc_nvlist_dst); - return (error); -} - -int -lzc_create(const char *fsname, enum lzc_dataset_type type, nvlist_t *props) -{ - int error; - nvlist_t *args = fnvlist_alloc(); - fnvlist_add_int32(args, "type", (dmu_objset_type_t)type); - if (props != NULL) - fnvlist_add_nvlist(args, "props", props); - error = lzc_ioctl(ZFS_IOC_CREATE, fsname, args, NULL); - nvlist_free(args); - return (error); -} - -int -lzc_clone(const char *fsname, const char *origin, - nvlist_t *props) -{ - int error; - nvlist_t *args = fnvlist_alloc(); - fnvlist_add_string(args, "origin", origin); - if (props != NULL) - fnvlist_add_nvlist(args, "props", props); - error = lzc_ioctl(ZFS_IOC_CLONE, fsname, args, NULL); - nvlist_free(args); - return (error); -} - -int -lzc_promote(const char *fsname, char *snapnamebuf, int snapnamelen) -{ - /* - * The promote ioctl is still legacy, so we need to construct our - * own zfs_cmd_t rather than using lzc_ioctl(). - */ - zfs_cmd_t zc = { 0 }; - - ASSERT3S(g_refcount, >, 0); - VERIFY3S(g_fd, !=, -1); - - (void) strlcpy(zc.zc_name, fsname, sizeof (zc.zc_name)); - if (ioctl(g_fd, ZFS_IOC_PROMOTE, &zc) != 0) { - int error = errno; - if (error == EEXIST && snapnamebuf != NULL) - (void) strlcpy(snapnamebuf, zc.zc_string, snapnamelen); - return (error); - } - return (0); -} - -int -lzc_remap(const char *fsname) -{ - int error; - nvlist_t *args = fnvlist_alloc(); - error = lzc_ioctl(ZFS_IOC_REMAP, fsname, args, NULL); - nvlist_free(args); - return (error); -} - -int -lzc_rename(const char *source, const char *target) -{ - zfs_cmd_t zc = { 0 }; - int error; - - ASSERT3S(g_refcount, >, 0); - VERIFY3S(g_fd, !=, -1); - - (void) strlcpy(zc.zc_name, source, sizeof (zc.zc_name)); - (void) strlcpy(zc.zc_value, target, sizeof (zc.zc_value)); - error = ioctl(g_fd, ZFS_IOC_RENAME, &zc); - if (error != 0) - error = errno; - return (error); -} - -int -lzc_destroy(const char *fsname) -{ - int error; - - nvlist_t *args = fnvlist_alloc(); - error = lzc_ioctl(ZFS_IOC_DESTROY, fsname, args, NULL); - nvlist_free(args); - return (error); -} - -/* - * Creates snapshots. - * - * The keys in the snaps nvlist are the snapshots to be created. - * They must all be in the same pool. - * - * The props nvlist is properties to set. Currently only user properties - * are supported. { user:prop_name -> string value } - * - * The returned results nvlist will have an entry for each snapshot that failed. - * The value will be the (int32) error code. - * - * The return value will be 0 if all snapshots were created, otherwise it will - * be the errno of a (unspecified) snapshot that failed. - */ -int -lzc_snapshot(nvlist_t *snaps, nvlist_t *props, nvlist_t **errlist) -{ - nvpair_t *elem; - nvlist_t *args; - int error; - char pool[ZFS_MAX_DATASET_NAME_LEN]; - - *errlist = NULL; - - /* determine the pool name */ - elem = nvlist_next_nvpair(snaps, NULL); - if (elem == NULL) - return (0); - (void) strlcpy(pool, nvpair_name(elem), sizeof (pool)); - pool[strcspn(pool, "/@")] = '\0'; - - args = fnvlist_alloc(); - fnvlist_add_nvlist(args, "snaps", snaps); - if (props != NULL) - fnvlist_add_nvlist(args, "props", props); - - error = lzc_ioctl(ZFS_IOC_SNAPSHOT, pool, args, errlist); - nvlist_free(args); - - return (error); -} - -/* - * Destroys snapshots. - * - * The keys in the snaps nvlist are the snapshots to be destroyed. - * They must all be in the same pool. - * - * Snapshots that do not exist will be silently ignored. - * - * If 'defer' is not set, and a snapshot has user holds or clones, the - * destroy operation will fail and none of the snapshots will be - * destroyed. - * - * If 'defer' is set, and a snapshot has user holds or clones, it will be - * marked for deferred destruction, and will be destroyed when the last hold - * or clone is removed/destroyed. - * - * The return value will be 0 if all snapshots were destroyed (or marked for - * later destruction if 'defer' is set) or didn't exist to begin with. - * - * Otherwise the return value will be the errno of a (unspecified) snapshot - * that failed, no snapshots will be destroyed, and the errlist will have an - * entry for each snapshot that failed. The value in the errlist will be - * the (int32) error code. - */ -int -lzc_destroy_snaps(nvlist_t *snaps, boolean_t defer, nvlist_t **errlist) -{ - nvpair_t *elem; - nvlist_t *args; - int error; - char pool[ZFS_MAX_DATASET_NAME_LEN]; - - /* determine the pool name */ - elem = nvlist_next_nvpair(snaps, NULL); - if (elem == NULL) - return (0); - (void) strlcpy(pool, nvpair_name(elem), sizeof (pool)); - pool[strcspn(pool, "/@")] = '\0'; - - args = fnvlist_alloc(); - fnvlist_add_nvlist(args, "snaps", snaps); - if (defer) - fnvlist_add_boolean(args, "defer"); - - error = lzc_ioctl(ZFS_IOC_DESTROY_SNAPS, pool, args, errlist); - nvlist_free(args); - - return (error); -} - -int -lzc_snaprange_space(const char *firstsnap, const char *lastsnap, - uint64_t *usedp) -{ - nvlist_t *args; - nvlist_t *result; - int err; - char fs[ZFS_MAX_DATASET_NAME_LEN]; - char *atp; - - /* determine the fs name */ - (void) strlcpy(fs, firstsnap, sizeof (fs)); - atp = strchr(fs, '@'); - if (atp == NULL) - return (EINVAL); - *atp = '\0'; - - args = fnvlist_alloc(); - fnvlist_add_string(args, "firstsnap", firstsnap); - - err = lzc_ioctl(ZFS_IOC_SPACE_SNAPS, lastsnap, args, &result); - nvlist_free(args); - if (err == 0) - *usedp = fnvlist_lookup_uint64(result, "used"); - fnvlist_free(result); - - return (err); -} - -boolean_t -lzc_exists(const char *dataset) -{ - /* - * The objset_stats ioctl is still legacy, so we need to construct our - * own zfs_cmd_t rather than using lzc_ioctl(). - */ - zfs_cmd_t zc = { 0 }; - - ASSERT3S(g_refcount, >, 0); - VERIFY3S(g_fd, !=, -1); - - (void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name)); - return (ioctl(g_fd, ZFS_IOC_OBJSET_STATS, &zc) == 0); -} - -/* - * outnvl is unused. - * It was added to preserve the function signature in case it is - * needed in the future. - */ -/*ARGSUSED*/ -int -lzc_sync(const char *pool_name, nvlist_t *innvl, nvlist_t **outnvl) -{ - return (lzc_ioctl(ZFS_IOC_POOL_SYNC, pool_name, innvl, NULL)); -} - -/* - * Create "user holds" on snapshots. If there is a hold on a snapshot, - * the snapshot can not be destroyed. (However, it can be marked for deletion - * by lzc_destroy_snaps(defer=B_TRUE).) - * - * The keys in the nvlist are snapshot names. - * The snapshots must all be in the same pool. - * The value is the name of the hold (string type). - * - * If cleanup_fd is not -1, it must be the result of open("/dev/zfs", O_EXCL). - * In this case, when the cleanup_fd is closed (including on process - * termination), the holds will be released. If the system is shut down - * uncleanly, the holds will be released when the pool is next opened - * or imported. - * - * Holds for snapshots which don't exist will be skipped and have an entry - * added to errlist, but will not cause an overall failure. - * - * The return value will be 0 if all holds, for snapshots that existed, - * were succesfully created. - * - * Otherwise the return value will be the errno of a (unspecified) hold that - * failed and no holds will be created. - * - * In all cases the errlist will have an entry for each hold that failed - * (name = snapshot), with its value being the error code (int32). - */ -int -lzc_hold(nvlist_t *holds, int cleanup_fd, nvlist_t **errlist) -{ - char pool[ZFS_MAX_DATASET_NAME_LEN]; - nvlist_t *args; - nvpair_t *elem; - int error; - - /* determine the pool name */ - elem = nvlist_next_nvpair(holds, NULL); - if (elem == NULL) - return (0); - (void) strlcpy(pool, nvpair_name(elem), sizeof (pool)); - pool[strcspn(pool, "/@")] = '\0'; - - args = fnvlist_alloc(); - fnvlist_add_nvlist(args, "holds", holds); - if (cleanup_fd != -1) - fnvlist_add_int32(args, "cleanup_fd", cleanup_fd); - - error = lzc_ioctl(ZFS_IOC_HOLD, pool, args, errlist); - nvlist_free(args); - return (error); -} - -/* - * Release "user holds" on snapshots. If the snapshot has been marked for - * deferred destroy (by lzc_destroy_snaps(defer=B_TRUE)), it does not have - * any clones, and all the user holds are removed, then the snapshot will be - * destroyed. - * - * The keys in the nvlist are snapshot names. - * The snapshots must all be in the same pool. - * The value is a nvlist whose keys are the holds to remove. - * - * Holds which failed to release because they didn't exist will have an entry - * added to errlist, but will not cause an overall failure. - * - * The return value will be 0 if the nvl holds was empty or all holds that - * existed, were successfully removed. - * - * Otherwise the return value will be the errno of a (unspecified) hold that - * failed to release and no holds will be released. - * - * In all cases the errlist will have an entry for each hold that failed to - * to release. - */ -int -lzc_release(nvlist_t *holds, nvlist_t **errlist) -{ - char pool[ZFS_MAX_DATASET_NAME_LEN]; - nvpair_t *elem; - - /* determine the pool name */ - elem = nvlist_next_nvpair(holds, NULL); - if (elem == NULL) - return (0); - (void) strlcpy(pool, nvpair_name(elem), sizeof (pool)); - pool[strcspn(pool, "/@")] = '\0'; - - return (lzc_ioctl(ZFS_IOC_RELEASE, pool, holds, errlist)); -} - -/* - * Retrieve list of user holds on the specified snapshot. - * - * On success, *holdsp will be set to a nvlist which the caller must free. - * The keys are the names of the holds, and the value is the creation time - * of the hold (uint64) in seconds since the epoch. - */ -int -lzc_get_holds(const char *snapname, nvlist_t **holdsp) -{ - return (lzc_ioctl(ZFS_IOC_GET_HOLDS, snapname, NULL, holdsp)); -} - -/* - * Generate a zfs send stream for the specified snapshot and write it to - * the specified file descriptor. - * - * "snapname" is the full name of the snapshot to send (e.g. "pool/fs@snap") - * - * If "from" is NULL, a full (non-incremental) stream will be sent. - * If "from" is non-NULL, it must be the full name of a snapshot or - * bookmark to send an incremental from (e.g. "pool/fs@earlier_snap" or - * "pool/fs#earlier_bmark"). If non-NULL, the specified snapshot or - * bookmark must represent an earlier point in the history of "snapname"). - * It can be an earlier snapshot in the same filesystem or zvol as "snapname", - * or it can be the origin of "snapname"'s filesystem, or an earlier - * snapshot in the origin, etc. - * - * "fd" is the file descriptor to write the send stream to. - * - * If "flags" contains LZC_SEND_FLAG_LARGE_BLOCK, the stream is permitted - * to contain DRR_WRITE records with drr_length > 128K, and DRR_OBJECT - * records with drr_blksz > 128K. - * - * If "flags" contains LZC_SEND_FLAG_EMBED_DATA, the stream is permitted - * to contain DRR_WRITE_EMBEDDED records with drr_etype==BP_EMBEDDED_TYPE_DATA, - * which the receiving system must support (as indicated by support - * for the "embedded_data" feature). - */ -int -lzc_send(const char *snapname, const char *from, int fd, - enum lzc_send_flags flags) -{ - return (lzc_send_resume(snapname, from, fd, flags, 0, 0)); -} - -int -lzc_send_resume(const char *snapname, const char *from, int fd, - enum lzc_send_flags flags, uint64_t resumeobj, uint64_t resumeoff) -{ - nvlist_t *args; - int err; - - args = fnvlist_alloc(); - fnvlist_add_int32(args, "fd", fd); - if (from != NULL) - fnvlist_add_string(args, "fromsnap", from); - if (flags & LZC_SEND_FLAG_LARGE_BLOCK) - fnvlist_add_boolean(args, "largeblockok"); - if (flags & LZC_SEND_FLAG_EMBED_DATA) - fnvlist_add_boolean(args, "embedok"); - if (flags & LZC_SEND_FLAG_COMPRESS) - fnvlist_add_boolean(args, "compressok"); - if (resumeobj != 0 || resumeoff != 0) { - fnvlist_add_uint64(args, "resume_object", resumeobj); - fnvlist_add_uint64(args, "resume_offset", resumeoff); - } - err = lzc_ioctl(ZFS_IOC_SEND_NEW, snapname, args, NULL); - nvlist_free(args); - return (err); -} - -/* - * "from" can be NULL, a snapshot, or a bookmark. - * - * If from is NULL, a full (non-incremental) stream will be estimated. This - * is calculated very efficiently. - * - * If from is a snapshot, lzc_send_space uses the deadlists attached to - * each snapshot to efficiently estimate the stream size. - * - * If from is a bookmark, the indirect blocks in the destination snapshot - * are traversed, looking for blocks with a birth time since the creation TXG of - * the snapshot this bookmark was created from. This will result in - * significantly more I/O and be less efficient than a send space estimation on - * an equivalent snapshot. - */ -int -lzc_send_space(const char *snapname, const char *from, - enum lzc_send_flags flags, uint64_t *spacep) -{ - nvlist_t *args; - nvlist_t *result; - int err; - - args = fnvlist_alloc(); - if (from != NULL) - fnvlist_add_string(args, "from", from); - if (flags & LZC_SEND_FLAG_LARGE_BLOCK) - fnvlist_add_boolean(args, "largeblockok"); - if (flags & LZC_SEND_FLAG_EMBED_DATA) - fnvlist_add_boolean(args, "embedok"); - if (flags & LZC_SEND_FLAG_COMPRESS) - fnvlist_add_boolean(args, "compressok"); - err = lzc_ioctl(ZFS_IOC_SEND_SPACE, snapname, args, &result); - nvlist_free(args); - if (err == 0) - *spacep = fnvlist_lookup_uint64(result, "space"); - nvlist_free(result); - return (err); -} - -static int -recv_read(int fd, void *buf, int ilen) -{ - char *cp = buf; - int rv; - int len = ilen; - - do { - rv = read(fd, cp, len); - cp += rv; - len -= rv; - } while (rv > 0); - - if (rv < 0 || len != 0) - return (EIO); - - return (0); -} - -static int -recv_impl(const char *snapname, nvlist_t *props, const char *origin, - boolean_t force, boolean_t resumable, int fd, - const dmu_replay_record_t *begin_record) -{ - /* - * The receive ioctl is still legacy, so we need to construct our own - * zfs_cmd_t rather than using zfsc_ioctl(). - */ - zfs_cmd_t zc = { 0 }; - char *atp; - char *packed = NULL; - size_t size; - int error; - - ASSERT3S(g_refcount, >, 0); - VERIFY3S(g_fd, !=, -1); - - /* zc_name is name of containing filesystem */ - (void) strlcpy(zc.zc_name, snapname, sizeof (zc.zc_name)); - atp = strchr(zc.zc_name, '@'); - if (atp == NULL) - return (EINVAL); - *atp = '\0'; - - /* if the fs does not exist, try its parent. */ - if (!lzc_exists(zc.zc_name)) { - char *slashp = strrchr(zc.zc_name, '/'); - if (slashp == NULL) - return (ENOENT); - *slashp = '\0'; - - } - - /* zc_value is full name of the snapshot to create */ - (void) strlcpy(zc.zc_value, snapname, sizeof (zc.zc_value)); - - if (props != NULL) { - /* zc_nvlist_src is props to set */ - packed = fnvlist_pack(props, &size); - zc.zc_nvlist_src = (uint64_t)(uintptr_t)packed; - zc.zc_nvlist_src_size = size; - } - - /* zc_string is name of clone origin (if DRR_FLAG_CLONE) */ - if (origin != NULL) - (void) strlcpy(zc.zc_string, origin, sizeof (zc.zc_string)); - - /* zc_begin_record is non-byteswapped BEGIN record */ - if (begin_record == NULL) { - error = recv_read(fd, &zc.zc_begin_record, - sizeof (zc.zc_begin_record)); - if (error != 0) - goto out; - } else { - zc.zc_begin_record = *begin_record; - } - - /* zc_cookie is fd to read from */ - zc.zc_cookie = fd; - - /* zc guid is force flag */ - zc.zc_guid = force; - - zc.zc_resumable = resumable; - - /* zc_cleanup_fd is unused */ - zc.zc_cleanup_fd = -1; - - error = ioctl(g_fd, ZFS_IOC_RECV, &zc); - if (error != 0) - error = errno; - -out: - if (packed != NULL) - fnvlist_pack_free(packed, size); - free((void*)(uintptr_t)zc.zc_nvlist_dst); - return (error); -} - -/* - * The simplest receive case: receive from the specified fd, creating the - * specified snapshot. Apply the specified properties as "received" properties - * (which can be overridden by locally-set properties). If the stream is a - * clone, its origin snapshot must be specified by 'origin'. The 'force' - * flag will cause the target filesystem to be rolled back or destroyed if - * necessary to receive. - * - * Return 0 on success or an errno on failure. - * - * Note: this interface does not work on dedup'd streams - * (those with DMU_BACKUP_FEATURE_DEDUP). - */ -int -lzc_receive(const char *snapname, nvlist_t *props, const char *origin, - boolean_t force, int fd) -{ - return (recv_impl(snapname, props, origin, force, B_FALSE, fd, NULL)); -} - -/* - * Like lzc_receive, but if the receive fails due to premature stream - * termination, the intermediate state will be preserved on disk. In this - * case, ECKSUM will be returned. The receive may subsequently be resumed - * with a resuming send stream generated by lzc_send_resume(). - */ -int -lzc_receive_resumable(const char *snapname, nvlist_t *props, const char *origin, - boolean_t force, int fd) -{ - return (recv_impl(snapname, props, origin, force, B_TRUE, fd, NULL)); -} - -/* - * Like lzc_receive, but allows the caller to read the begin record and then to - * pass it in. That could be useful if the caller wants to derive, for example, - * the snapname or the origin parameters based on the information contained in - * the begin record. - * The begin record must be in its original form as read from the stream, - * in other words, it should not be byteswapped. - * - * The 'resumable' parameter allows to obtain the same behavior as with - * lzc_receive_resumable. - */ -int -lzc_receive_with_header(const char *snapname, nvlist_t *props, - const char *origin, boolean_t force, boolean_t resumable, int fd, - const dmu_replay_record_t *begin_record) -{ - if (begin_record == NULL) - return (EINVAL); - return (recv_impl(snapname, props, origin, force, resumable, fd, - begin_record)); -} - -/* - * Roll back this filesystem or volume to its most recent snapshot. - * If snapnamebuf is not NULL, it will be filled in with the name - * of the most recent snapshot. - * Note that the latest snapshot may change if a new one is concurrently - * created or the current one is destroyed. lzc_rollback_to can be used - * to roll back to a specific latest snapshot. - * - * Return 0 on success or an errno on failure. - */ -int -lzc_rollback(const char *fsname, char *snapnamebuf, int snapnamelen) -{ - nvlist_t *args; - nvlist_t *result; - int err; - - args = fnvlist_alloc(); - err = lzc_ioctl(ZFS_IOC_ROLLBACK, fsname, args, &result); - nvlist_free(args); - if (err == 0 && snapnamebuf != NULL) { - const char *snapname = fnvlist_lookup_string(result, "target"); - (void) strlcpy(snapnamebuf, snapname, snapnamelen); - } - nvlist_free(result); - - return (err); -} - -/* - * Roll back this filesystem or volume to the specified snapshot, - * if possible. - * - * Return 0 on success or an errno on failure. - */ -int -lzc_rollback_to(const char *fsname, const char *snapname) -{ - nvlist_t *args; - nvlist_t *result; - int err; - - args = fnvlist_alloc(); - fnvlist_add_string(args, "target", snapname); - err = lzc_ioctl(ZFS_IOC_ROLLBACK, fsname, args, &result); - nvlist_free(args); - nvlist_free(result); - return (err); -} - -/* - * Creates bookmarks. - * - * The bookmarks nvlist maps from name of the bookmark (e.g. "pool/fs#bmark") to - * the name of the snapshot (e.g. "pool/fs@snap"). All the bookmarks and - * snapshots must be in the same pool. - * - * The returned results nvlist will have an entry for each bookmark that failed. - * The value will be the (int32) error code. - * - * The return value will be 0 if all bookmarks were created, otherwise it will - * be the errno of a (undetermined) bookmarks that failed. - */ -int -lzc_bookmark(nvlist_t *bookmarks, nvlist_t **errlist) -{ - nvpair_t *elem; - int error; - char pool[ZFS_MAX_DATASET_NAME_LEN]; - - /* determine the pool name */ - elem = nvlist_next_nvpair(bookmarks, NULL); - if (elem == NULL) - return (0); - (void) strlcpy(pool, nvpair_name(elem), sizeof (pool)); - pool[strcspn(pool, "/#")] = '\0'; - - error = lzc_ioctl(ZFS_IOC_BOOKMARK, pool, bookmarks, errlist); - - return (error); -} - -/* - * Retrieve bookmarks. - * - * Retrieve the list of bookmarks for the given file system. The props - * parameter is an nvlist of property names (with no values) that will be - * returned for each bookmark. - * - * The following are valid properties on bookmarks, all of which are numbers - * (represented as uint64 in the nvlist) - * - * "guid" - globally unique identifier of the snapshot it refers to - * "createtxg" - txg when the snapshot it refers to was created - * "creation" - timestamp when the snapshot it refers to was created - * - * The format of the returned nvlist as follows: - * <short name of bookmark> -> { - * <name of property> -> { - * "value" -> uint64 - * } - * } - */ -int -lzc_get_bookmarks(const char *fsname, nvlist_t *props, nvlist_t **bmarks) -{ - return (lzc_ioctl(ZFS_IOC_GET_BOOKMARKS, fsname, props, bmarks)); -} - -/* - * Destroys bookmarks. - * - * The keys in the bmarks nvlist are the bookmarks to be destroyed. - * They must all be in the same pool. Bookmarks are specified as - * <fs>#<bmark>. - * - * Bookmarks that do not exist will be silently ignored. - * - * The return value will be 0 if all bookmarks that existed were destroyed. - * - * Otherwise the return value will be the errno of a (undetermined) bookmark - * that failed, no bookmarks will be destroyed, and the errlist will have an - * entry for each bookmarks that failed. The value in the errlist will be - * the (int32) error code. - */ -int -lzc_destroy_bookmarks(nvlist_t *bmarks, nvlist_t **errlist) -{ - nvpair_t *elem; - int error; - char pool[ZFS_MAX_DATASET_NAME_LEN]; - - /* determine the pool name */ - elem = nvlist_next_nvpair(bmarks, NULL); - if (elem == NULL) - return (0); - (void) strlcpy(pool, nvpair_name(elem), sizeof (pool)); - pool[strcspn(pool, "/#")] = '\0'; - - error = lzc_ioctl(ZFS_IOC_DESTROY_BOOKMARKS, pool, bmarks, errlist); - - return (error); -} - -static int -lzc_channel_program_impl(const char *pool, const char *program, boolean_t sync, - uint64_t instrlimit, uint64_t memlimit, nvlist_t *argnvl, nvlist_t **outnvl) -{ - int error; - nvlist_t *args; - - args = fnvlist_alloc(); - fnvlist_add_string(args, ZCP_ARG_PROGRAM, program); - fnvlist_add_nvlist(args, ZCP_ARG_ARGLIST, argnvl); - fnvlist_add_boolean_value(args, ZCP_ARG_SYNC, sync); - fnvlist_add_uint64(args, ZCP_ARG_INSTRLIMIT, instrlimit); - fnvlist_add_uint64(args, ZCP_ARG_MEMLIMIT, memlimit); - error = lzc_ioctl(ZFS_IOC_CHANNEL_PROGRAM, pool, args, outnvl); - fnvlist_free(args); - - return (error); -} - -/* - * Executes a channel program. - * - * If this function returns 0 the channel program was successfully loaded and - * ran without failing. Note that individual commands the channel program ran - * may have failed and the channel program is responsible for reporting such - * errors through outnvl if they are important. - * - * This method may also return: - * - * EINVAL The program contains syntax errors, or an invalid memory or time - * limit was given. No part of the channel program was executed. - * If caused by syntax errors, 'outnvl' contains information about the - * errors. - * - * EDOM The program was executed, but encountered a runtime error, such as - * calling a function with incorrect arguments, invoking the error() - * function directly, failing an assert() command, etc. Some portion - * of the channel program may have executed and committed changes. - * Information about the failure can be found in 'outnvl'. - * - * ENOMEM The program fully executed, but the output buffer was not large - * enough to store the returned value. No output is returned through - * 'outnvl'. - * - * ENOSPC The program was terminated because it exceeded its memory usage - * limit. Some portion of the channel program may have executed and - * committed changes to disk. No output is returned through 'outnvl'. - * - * ETIMEDOUT The program was terminated because it exceeded its Lua instruction - * limit. Some portion of the channel program may have executed and - * committed changes to disk. No output is returned through 'outnvl'. - */ -int -lzc_channel_program(const char *pool, const char *program, uint64_t instrlimit, - uint64_t memlimit, nvlist_t *argnvl, nvlist_t **outnvl) -{ - return (lzc_channel_program_impl(pool, program, B_TRUE, instrlimit, - memlimit, argnvl, outnvl)); -} - -/* - * Creates a checkpoint for the specified pool. - * - * If this function returns 0 the pool was successfully checkpointed. - * - * This method may also return: - * - * ZFS_ERR_CHECKPOINT_EXISTS - * The pool already has a checkpoint. A pools can only have one - * checkpoint at most, at any given time. - * - * ZFS_ERR_DISCARDING_CHECKPOINT - * ZFS is in the middle of discarding a checkpoint for this pool. - * The pool can be checkpointed again once the discard is done. - * - * ZFS_DEVRM_IN_PROGRESS - * A vdev is currently being removed. The pool cannot be - * checkpointed until the device removal is done. - * - * ZFS_VDEV_TOO_BIG - * One or more top-level vdevs exceed the maximum vdev size - * supported for this feature. - */ -int -lzc_pool_checkpoint(const char *pool) -{ - int error; - - nvlist_t *result = NULL; - nvlist_t *args = fnvlist_alloc(); - - error = lzc_ioctl(ZFS_IOC_POOL_CHECKPOINT, pool, args, &result); - - fnvlist_free(args); - fnvlist_free(result); - - return (error); -} - -/* - * Discard the checkpoint from the specified pool. - * - * If this function returns 0 the checkpoint was successfully discarded. - * - * This method may also return: - * - * ZFS_ERR_NO_CHECKPOINT - * The pool does not have a checkpoint. - * - * ZFS_ERR_DISCARDING_CHECKPOINT - * ZFS is already in the middle of discarding the checkpoint. - */ -int -lzc_pool_checkpoint_discard(const char *pool) -{ - int error; - - nvlist_t *result = NULL; - nvlist_t *args = fnvlist_alloc(); - - error = lzc_ioctl(ZFS_IOC_POOL_DISCARD_CHECKPOINT, pool, args, &result); - - fnvlist_free(args); - fnvlist_free(result); - - return (error); -} - -/* - * Executes a read-only channel program. - * - * A read-only channel program works programmatically the same way as a - * normal channel program executed with lzc_channel_program(). The only - * difference is it runs exclusively in open-context and therefore can - * return faster. The downside to that, is that the program cannot change - * on-disk state by calling functions from the zfs.sync submodule. - * - * The return values of this function (and their meaning) are exactly the - * same as the ones described in lzc_channel_program(). - */ -int -lzc_channel_program_nosync(const char *pool, const char *program, - uint64_t timeout, uint64_t memlimit, nvlist_t *argnvl, nvlist_t **outnvl) -{ - return (lzc_channel_program_impl(pool, program, B_FALSE, timeout, - memlimit, argnvl, outnvl)); -} - -/* - * Changes initializing state. - * - * vdevs should be a list of (<key>, guid) where guid is a uint64 vdev GUID. - * The key is ignored. - * - * If there are errors related to vdev arguments, per-vdev errors are returned - * in an nvlist with the key "vdevs". Each error is a (guid, errno) pair where - * guid is stringified with PRIu64, and errno is one of the following as - * an int64_t: - * - ENODEV if the device was not found - * - EINVAL if the devices is not a leaf or is not concrete (e.g. missing) - * - EROFS if the device is not writeable - * - EBUSY start requested but the device is already being initialized - * - ESRCH cancel/suspend requested but device is not being initialized - * - * If the errlist is empty, then return value will be: - * - EINVAL if one or more arguments was invalid - * - Other spa_open failures - * - 0 if the operation succeeded - */ -int -lzc_initialize(const char *poolname, pool_initialize_func_t cmd_type, - nvlist_t *vdevs, nvlist_t **errlist) -{ - int error; - nvlist_t *args = fnvlist_alloc(); - fnvlist_add_uint64(args, ZPOOL_INITIALIZE_COMMAND, (uint64_t)cmd_type); - fnvlist_add_nvlist(args, ZPOOL_INITIALIZE_VDEVS, vdevs); - - error = lzc_ioctl(ZFS_IOC_POOL_INITIALIZE, poolname, args, errlist); - - fnvlist_free(args); - - return (error); -} - -/* - * Set the bootenv contents for the given pool. - */ -int -lzc_set_bootenv(const char *pool, const char *env) -{ - nvlist_t *args = fnvlist_alloc(); - fnvlist_add_string(args, "envmap", env); - int error = lzc_ioctl(ZFS_IOC_SET_BOOTENV, pool, args, NULL); - fnvlist_free(args); - return (error); -} - -/* - * Get the contents of the bootenv of the given pool. - */ -int -lzc_get_bootenv(const char *pool, nvlist_t **outnvl) -{ - return (lzc_ioctl(ZFS_IOC_GET_BOOTENV, pool, NULL, outnvl)); -} diff --git a/cddl/contrib/opensolaris/lib/libzfs_core/common/libzfs_core.h b/cddl/contrib/opensolaris/lib/libzfs_core/common/libzfs_core.h deleted file mode 100644 index 76c4fa1bf6b4..000000000000 --- a/cddl/contrib/opensolaris/lib/libzfs_core/common/libzfs_core.h +++ /dev/null @@ -1,114 +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 (c) 2012, 2020 by Delphix. All rights reserved. - * Copyright (c) 2013 by Martin Matuska <mm@FreeBSD.org>. All rights reserved. - * Copyright 2017 RackTop Systems. - * Copyright (c) 2017 Datto Inc. - */ - -#ifndef _LIBZFS_CORE_H -#define _LIBZFS_CORE_H - -#include <libnvpair.h> -#include <sys/param.h> -#include <sys/types.h> -#include <sys/fs/zfs.h> - - -#ifdef __cplusplus -extern "C" { -#endif - -int libzfs_core_init(void); -void libzfs_core_fini(void); - -/* - * NB: this type should be kept binary compatible with dmu_objset_type_t. - */ -enum lzc_dataset_type { - LZC_DATSET_TYPE_ZFS = 2, - LZC_DATSET_TYPE_ZVOL -}; - -int lzc_remap(const char *fsname); -int lzc_snapshot(nvlist_t *, nvlist_t *, nvlist_t **); -int lzc_create(const char *, enum lzc_dataset_type, nvlist_t *); -int lzc_clone(const char *, const char *, nvlist_t *); -int lzc_promote(const char *, char *, int); -int lzc_destroy_snaps(nvlist_t *, boolean_t, nvlist_t **); -int lzc_bookmark(nvlist_t *, nvlist_t **); -int lzc_get_bookmarks(const char *, nvlist_t *, nvlist_t **); -int lzc_destroy_bookmarks(nvlist_t *, nvlist_t **); -int lzc_initialize(const char *, pool_initialize_func_t, nvlist_t *, - nvlist_t **); - -int lzc_snaprange_space(const char *, const char *, uint64_t *); - -int lzc_hold(nvlist_t *, int, nvlist_t **); -int lzc_release(nvlist_t *, nvlist_t **); -int lzc_get_holds(const char *, nvlist_t **); - -enum lzc_send_flags { - LZC_SEND_FLAG_EMBED_DATA = 1 << 0, - LZC_SEND_FLAG_LARGE_BLOCK = 1 << 1, - LZC_SEND_FLAG_COMPRESS = 1 << 2 -}; - -int lzc_send(const char *, const char *, int, enum lzc_send_flags); -int lzc_send_resume(const char *, const char *, int, - enum lzc_send_flags, uint64_t, uint64_t); -int lzc_send_space(const char *, const char *, enum lzc_send_flags, uint64_t *); - -struct dmu_replay_record; - -int lzc_receive(const char *, nvlist_t *, const char *, boolean_t, int); -int lzc_receive_resumable(const char *, nvlist_t *, const char *, - boolean_t, int); -int lzc_receive_with_header(const char *, nvlist_t *, const char *, boolean_t, - boolean_t, int, const struct dmu_replay_record *); - -boolean_t lzc_exists(const char *); - -int lzc_rollback(const char *, char *, int); -int lzc_rollback_to(const char *, const char *); - -int lzc_sync(const char *, nvlist_t *, nvlist_t **); - -int lzc_rename(const char *, const char *); -int lzc_destroy(const char *); - -int lzc_channel_program(const char *, const char *, uint64_t, - uint64_t, nvlist_t *, nvlist_t **); -int lzc_channel_program_nosync(const char *, const char *, uint64_t, - uint64_t, nvlist_t *, nvlist_t **); - -int lzc_pool_checkpoint(const char *); -int lzc_pool_checkpoint_discard(const char *); - -int lzc_set_bootenv(const char *, const char *); -int lzc_get_bootenv(const char *, nvlist_t **); -#ifdef __cplusplus -} -#endif - -#endif /* _LIBZFS_CORE_H */ diff --git a/cddl/contrib/opensolaris/lib/libzfs_core/common/libzfs_core_compat.c b/cddl/contrib/opensolaris/lib/libzfs_core/common/libzfs_core_compat.c deleted file mode 100644 index a3b872ee29da..000000000000 --- a/cddl/contrib/opensolaris/lib/libzfs_core/common/libzfs_core_compat.c +++ /dev/null @@ -1,189 +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 (c) 2013 Martin Matuska <mm@FreeBSD.org>. All rights reserved. - */ - -#include <sys/zfs_ioctl.h> -#include <zfs_ioctl_compat.h> -#include "libzfs_core_compat.h" - -extern int zfs_ioctl_version; - -int -lzc_compat_pre(zfs_cmd_t *zc, zfs_ioc_t *ioc, nvlist_t **source) -{ - nvlist_t *nvl = NULL; - nvpair_t *pair, *hpair; - char *buf, *val; - zfs_ioc_t vecnum; - uint32_t type32; - int32_t cleanup_fd; - int error = 0; - int pos; - - if (zfs_ioctl_version >= ZFS_IOCVER_LZC) - return (0); - - vecnum = *ioc; - - switch (vecnum) { - case ZFS_IOC_CREATE: - type32 = fnvlist_lookup_int32(*source, "type"); - zc->zc_objset_type = (uint64_t)type32; - nvlist_lookup_nvlist(*source, "props", &nvl); - *source = nvl; - break; - case ZFS_IOC_CLONE: - buf = fnvlist_lookup_string(*source, "origin"); - strlcpy(zc->zc_value, buf, MAXPATHLEN); - nvlist_lookup_nvlist(*source, "props", &nvl); - *ioc = ZFS_IOC_CREATE; - *source = nvl; - break; - case ZFS_IOC_SNAPSHOT: - nvl = fnvlist_lookup_nvlist(*source, "snaps"); - pair = nvlist_next_nvpair(nvl, NULL); - if (pair != NULL) { - buf = nvpair_name(pair); - pos = strcspn(buf, "@"); - strlcpy(zc->zc_name, buf, pos + 1); - strlcpy(zc->zc_value, buf + pos + 1, MAXPATHLEN); - } else - error = EINVAL; - /* old kernel cannot create multiple snapshots */ - if (!error && nvlist_next_nvpair(nvl, pair) != NULL) - error = EOPNOTSUPP; - nvlist_free(nvl); - nvl = NULL; - nvlist_lookup_nvlist(*source, "props", &nvl); - *source = nvl; - break; - case ZFS_IOC_SPACE_SNAPS: - buf = fnvlist_lookup_string(*source, "firstsnap"); - strlcpy(zc->zc_value, buf, MAXPATHLEN); - break; - case ZFS_IOC_DESTROY_SNAPS: - nvl = fnvlist_lookup_nvlist(*source, "snaps"); - pair = nvlist_next_nvpair(nvl, NULL); - if (pair != NULL) { - buf = nvpair_name(pair); - pos = strcspn(buf, "@"); - strlcpy(zc->zc_name, buf, pos + 1); - } else - error = EINVAL; - /* old kernel cannot atomically destroy multiple snaps */ - if (!error && nvlist_next_nvpair(nvl, pair) != NULL) - error = EOPNOTSUPP; - *source = nvl; - break; - case ZFS_IOC_HOLD: - nvl = fnvlist_lookup_nvlist(*source, "holds"); - pair = nvlist_next_nvpair(nvl, NULL); - if (pair != NULL) { - buf = nvpair_name(pair); - pos = strcspn(buf, "@"); - strlcpy(zc->zc_name, buf, pos + 1); - strlcpy(zc->zc_value, buf + pos + 1, MAXPATHLEN); - if (nvpair_value_string(pair, &val) == 0) - strlcpy(zc->zc_string, val, MAXNAMELEN); - else - error = EINVAL; - } else - error = EINVAL; - /* old kernel cannot atomically create multiple holds */ - if (!error && nvlist_next_nvpair(nvl, pair) != NULL) - error = EOPNOTSUPP; - nvlist_free(nvl); - if (nvlist_lookup_int32(*source, "cleanup_fd", - &cleanup_fd) == 0) - zc->zc_cleanup_fd = cleanup_fd; - else - zc->zc_cleanup_fd = -1; - break; - case ZFS_IOC_RELEASE: - pair = nvlist_next_nvpair(*source, NULL); - if (pair != NULL) { - buf = nvpair_name(pair); - pos = strcspn(buf, "@"); - strlcpy(zc->zc_name, buf, pos + 1); - strlcpy(zc->zc_value, buf + pos + 1, MAXPATHLEN); - if (nvpair_value_nvlist(pair, &nvl) == 0) { - hpair = nvlist_next_nvpair(nvl, NULL); - if (hpair != NULL) - strlcpy(zc->zc_string, - nvpair_name(hpair), MAXNAMELEN); - else - error = EINVAL; - if (!error && nvlist_next_nvpair(nvl, - hpair) != NULL) - error = EOPNOTSUPP; - } else - error = EINVAL; - } else - error = EINVAL; - /* old kernel cannot atomically release multiple holds */ - if (!error && nvlist_next_nvpair(nvl, pair) != NULL) - error = EOPNOTSUPP; - break; - } - - return (error); -} - -void -lzc_compat_post(zfs_cmd_t *zc, const zfs_ioc_t ioc) -{ - if (zfs_ioctl_version >= ZFS_IOCVER_LZC) - return; - - switch (ioc) { - case ZFS_IOC_CREATE: - case ZFS_IOC_CLONE: - case ZFS_IOC_SNAPSHOT: - case ZFS_IOC_SPACE_SNAPS: - case ZFS_IOC_DESTROY_SNAPS: - zc->zc_nvlist_dst_filled = B_FALSE; - break; - } -} - -int -lzc_compat_outnvl(zfs_cmd_t *zc, const zfs_ioc_t ioc, nvlist_t **outnvl) -{ - nvlist_t *nvl; - - if (zfs_ioctl_version >= ZFS_IOCVER_LZC) - return (0); - - switch (ioc) { - case ZFS_IOC_SPACE_SNAPS: - nvl = fnvlist_alloc(); - fnvlist_add_uint64(nvl, "used", zc->zc_cookie); - fnvlist_add_uint64(nvl, "compressed", zc->zc_objset_type); - fnvlist_add_uint64(nvl, "uncompressed", zc->zc_perm_action); - *outnvl = nvl; - break; - } - - return (0); -} diff --git a/cddl/contrib/opensolaris/lib/libzfs_core/common/libzfs_core_compat.h b/cddl/contrib/opensolaris/lib/libzfs_core/common/libzfs_core_compat.h deleted file mode 100644 index 6527c4b2576f..000000000000 --- a/cddl/contrib/opensolaris/lib/libzfs_core/common/libzfs_core_compat.h +++ /dev/null @@ -1,47 +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 (c) 2013 by Martin Matuska <mm@FreeBSD.org>. All rights reserved. - */ - -#ifndef _LIBZFS_CORE_COMPAT_H -#define _LIBZFS_CORE_COMPAT_H - -#include <libnvpair.h> -#include <sys/param.h> -#include <sys/types.h> -#include <sys/fs/zfs.h> -#include <sys/zfs_ioctl.h> - -#ifdef __cplusplus -extern "C" { -#endif - -int lzc_compat_pre(zfs_cmd_t *, zfs_ioc_t *, nvlist_t **); -void lzc_compat_post(zfs_cmd_t *, const zfs_ioc_t); -int lzc_compat_outnvl(zfs_cmd_t *, const zfs_ioc_t, nvlist_t **); - -#ifdef __cplusplus -} -#endif - -#endif /* _LIBZFS_CORE_COMPAT_H */ |