/* * 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 https://opensource.org/licenses/CDDL-1.0. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. * Copyright 2020 Joyent, Inc. All rights reserved. * Copyright (c) 2011, 2020 by Delphix. All rights reserved. * Copyright 2016 Igor Kozhukhov * Copyright (c) 2017 Datto Inc. * Copyright (c) 2020 The FreeBSD Foundation * * Portions of this software were developed by Allan Jude * under sponsorship from the FreeBSD Foundation. */ /* * Internal utility routines for the ZFS library. */ #include #include #include #include #include #include #include #include #include #if LIBFETCH_DYNAMIC #include #endif #include #include #include #include #include #include #include #include "libzfs_impl.h" #include "zfs_prop.h" #include "zfeature_common.h" #include #include /* * We only care about the scheme in order to match the scheme * with the handler. Each handler should validate the full URI * as necessary. */ #define URI_REGEX "^\\([A-Za-z][A-Za-z0-9+.\\-]*\\):" int libzfs_errno(libzfs_handle_t *hdl) { return (hdl->libzfs_error); } const char * libzfs_error_action(libzfs_handle_t *hdl) { return (hdl->libzfs_action); } const char * libzfs_error_description(libzfs_handle_t *hdl) { if (hdl->libzfs_desc[0] != '\0') return (hdl->libzfs_desc); switch (hdl->libzfs_error) { case EZFS_NOMEM: return (dgettext(TEXT_DOMAIN, "out of memory")); case EZFS_BADPROP: return (dgettext(TEXT_DOMAIN, "invalid property value")); case EZFS_PROPREADONLY: return (dgettext(TEXT_DOMAIN, "read-only property")); case EZFS_PROPTYPE: return (dgettext(TEXT_DOMAIN, "property doesn't apply to " "datasets of this type")); case EZFS_PROPNONINHERIT: return (dgettext(TEXT_DOMAIN, "property cannot be inherited")); case EZFS_PROPSPACE: return (dgettext(TEXT_DOMAIN, "invalid quota or reservation")); case EZFS_BADTYPE: return (dgettext(TEXT_DOMAIN, "operation not applicable to " "datasets of this type")); case EZFS_BUSY: return (dgettext(TEXT_DOMAIN, "pool or dataset is busy")); case EZFS_EXISTS: return (dgettext(TEXT_DOMAIN, "pool or dataset exists")); case EZFS_NOENT: return (dgettext(TEXT_DOMAIN, "no such pool or dataset")); case EZFS_BADSTREAM: return (dgettext(TEXT_DOMAIN, "invalid backup stream")); case EZFS_DSREADONLY: return (dgettext(TEXT_DOMAIN, "dataset is read-only")); case EZFS_VOLTOOBIG: return (dgettext(TEXT_DOMAIN, "volume size exceeds limit for " "this system")); case EZFS_INVALIDNAME: return (dgettext(TEXT_DOMAIN, "invalid name")); case EZFS_BADRESTORE: return (dgettext(TEXT_DOMAIN, "unable to restore to " "destination")); case EZFS_BADBACKUP: return (dgettext(TEXT_DOMAIN, "backup failed")); case EZFS_BADTARGET: return (dgettext(TEXT_DOMAIN, "invalid target vdev")); case EZFS_NODEVICE: return (dgettext(TEXT_DOMAIN, "no such device in pool")); case EZFS_BADDEV: return (dgettext(TEXT_DOMAIN, "invalid device")); case EZFS_NOREPLICAS: return (dgettext(TEXT_DOMAIN, "no valid replicas")); case EZFS_RESILVERING: return (dgettext(TEXT_DOMAIN, "currently resilvering")); case EZFS_BADVERSION: return (dgettext(TEXT_DOMAIN, "unsupported version or " "feature")); case EZFS_POOLUNAVAIL: return (dgettext(TEXT_DOMAIN, "pool is unavailable")); case EZFS_DEVOVERFLOW: return (dgettext(TEXT_DOMAIN, "too many devices in one vdev")); case EZFS_BADPATH: return (dgettext(TEXT_DOMAIN, "must be an absolute path")); case EZFS_CROSSTARGET: return (dgettext(TEXT_DOMAIN, "operation crosses datasets or " "pools")); case EZFS_ZONED: return (dgettext(TEXT_DOMAIN, "dataset in use by local zone")); case EZFS_MOUNTFAILED: return (dgettext(TEXT_DOMAIN, "mount failed")); case EZFS_UMOUNTFAILED: return (dgettext(TEXT_DOMAIN, "unmount failed")); case EZFS_UNSHARENFSFAILED: return (dgettext(TEXT_DOMAIN, "NFS share removal failed")); case EZFS_SHARENFSFAILED: return (dgettext(TEXT_DOMAIN, "NFS share creation failed")); case EZFS_UNSHARESMBFAILED: return (dgettext(TEXT_DOMAIN, "SMB share removal failed")); case EZFS_SHARESMBFAILED: return (dgettext(TEXT_DOMAIN, "SMB share creation failed")); case EZFS_PERM: return (dgettext(TEXT_DOMAIN, "permission denied")); case EZFS_NOSPC: return (dgettext(TEXT_DOMAIN, "out of space")); case EZFS_FAULT: return (dgettext(TEXT_DOMAIN, "bad address")); case EZFS_IO: return (dgettext(TEXT_DOMAIN, "I/O error")); case EZFS_INTR: return (dgettext(TEXT_DOMAIN, "signal received")); case EZFS_CKSUM: return (dgettext(TEXT_DOMAIN, "insufficient replicas")); case EZFS_ISSPARE: return (dgettext(TEXT_DOMAIN, "device is reserved as a hot " "spare")); case EZFS_INVALCONFIG: return (dgettext(TEXT_DOMAIN, "invalid vdev configuration")); case EZFS_RECURSIVE: return (dgettext(TEXT_DOMAIN, "recursive dataset dependency")); case EZFS_NOHISTORY: return (dgettext(TEXT_DOMAIN, "no history available")); case EZFS_POOLPROPS: return (dgettext(TEXT_DOMAIN, "failed to retrieve " "pool properties")); case EZFS_POOL_NOTSUP: return (dgettext(TEXT_DOMAIN, "operation not supported " "on this type of pool")); case EZFS_POOL_INVALARG: return (dgettext(TEXT_DOMAIN, "invalid argument for " "this pool operation")); case EZFS_NAMETOOLONG: return (dgettext(TEXT_DOMAIN, "dataset name is too long")); case EZFS_OPENFAILED: return (dgettext(TEXT_DOMAIN, "open failed")); case EZFS_NOCAP: return (dgettext(TEXT_DOMAIN, "disk capacity information could not be retrieved")); case EZFS_LABELFAILED: return (dgettext(TEXT_DOMAIN, "write of label failed")); case EZFS_BADWHO: return (dgettext(TEXT_DOMAIN, "invalid user/group")); case EZFS_BADPERM: return (dgettext(TEXT_DOMAIN, "invalid permission")); case EZFS_BADPERMSET: return (dgettext(TEXT_DOMAIN, "invalid permission set name")); case EZFS_NODELEGATION: return (dgettext(TEXT_DOMAIN, "delegated administration is " "disabled on pool")); case EZFS_BADCACHE: return (dgettext(TEXT_DOMAIN, "invalid or missing cache file")); case EZFS_ISL2CACHE: return (dgettext(TEXT_DOMAIN, "device is in use as a cache")); case EZFS_VDEVNOTSUP: return (dgettext(TEXT_DOMAIN, "vdev specification is not " "supported")); case EZFS_NOTSUP: return (dgettext(TEXT_DOMAIN, "operation not supported " "on this dataset")); case EZFS_IOC_NOTSUPPORTED: return (dgettext(TEXT_DOMAIN, "operation not supported by " "zfs kernel module")); case EZFS_ACTIVE_SPARE: return (dgettext(TEXT_DOMAIN, "pool has active shared spare " "device")); case EZFS_UNPLAYED_LOGS: return (dgettext(TEXT_DOMAIN, "log device has unplayed intent " "logs")); case EZFS_REFTAG_RELE: return (dgettext(TEXT_DOMAIN, "no such tag on this dataset")); case EZFS_REFTAG_HOLD: return (dgettext(TEXT_DOMAIN, "tag already exists on this " "dataset")); case EZFS_TAGTOOLONG: return (dgettext(TEXT_DOMAIN, "tag too long")); case EZFS_PIPEFAILED: return (dgettext(TEXT_DOMAIN, "pipe create failed")); case EZFS_THREADCREATEFAILED: return (dgettext(TEXT_DOMAIN, "thread create failed")); case EZFS_POSTSPLIT_ONLINE: return (dgettext(TEXT_DOMAIN, "disk was split from this pool " "into a new one")); case EZFS_SCRUB_PAUSED: return (dgettext(TEXT_DOMAIN, "scrub is paused; " "use 'zpool scrub' to resume scrub")); case EZFS_SCRUB_PAUSED_TO_CANCEL: return (dgettext(TEXT_DOMAIN, "scrub is paused; " "use 'zpool scrub' to resume or 'zpool scrub -s' to " "cancel scrub")); case EZFS_SCRUBBING: return (dgettext(TEXT_DOMAIN, "currently scrubbing; " "use 'zpool scrub -s' to cancel scrub")); case EZFS_ERRORSCRUBBING: return (dgettext(TEXT_DOMAIN, "currently error scrubbing; " "use 'zpool scrub -s' to cancel error scrub")); case EZFS_ERRORSCRUB_PAUSED: return (dgettext(TEXT_DOMAIN, "error scrub is paused; " "use 'zpool scrub -e' to resume error scrub")); case EZFS_NO_SCRUB: return (dgettext(TEXT_DOMAIN, "there is no active scrub")); case EZFS_DIFF: return (dgettext(TEXT_DOMAIN, "unable to generate diffs")); case EZFS_DIFFDATA: return (dgettext(TEXT_DOMAIN, "invalid diff data")); case EZFS_POOLREADONLY: return (dgettext(TEXT_DOMAIN, "pool is read-only")); case EZFS_NO_PENDING: return (dgettext(TEXT_DOMAIN, "operation is not " "in progress")); case EZFS_CHECKPOINT_EXISTS: return (dgettext(TEXT_DOMAIN, "checkpoint exists")); case EZFS_DISCARDING_CHECKPOINT: return (dgettext(TEXT_DOMAIN, "currently discarding " "checkpoint")); case EZFS_NO_CHECKPOINT: return (dgettext(TEXT_DOMAIN, "checkpoint does not exist")); case EZFS_DEVRM_IN_PROGRESS: return (dgettext(TEXT_DOMAIN, "device removal in progress")); case EZFS_VDEV_TOO_BIG: return (dgettext(TEXT_DOMAIN, "device exceeds supported size")); case EZFS_ACTIVE_POOL: return (dgettext(TEXT_DOMAIN, "pool is imported on a " "different host")); case EZFS_CRYPTOFAILED: return (dgettext(TEXT_DOMAIN, "encryption failure")); case EZFS_TOOMANY: return (dgettext(TEXT_DOMAIN, "argument list too long")); case EZFS_INITIALIZING: return (dgettext(TEXT_DOMAIN, "currently initializing")); case EZFS_NO_INITIALIZE: return (dgettext(TEXT_DOMAIN, "there is no active " "initialization")); case EZFS_WRONG_PARENT: return (dgettext(TEXT_DOMAIN, "invalid parent dataset")); case EZFS_TRIMMING: return (dgettext(TEXT_DOMAIN, "currently trimming")); case EZFS_NO_TRIM: return (dgettext(TEXT_DOMAIN, "there is no active trim")); case EZFS_TRIM_NOTSUP: return (dgettext(TEXT_DOMAIN, "trim operations are not " "supported by this device")); case EZFS_NO_RESILVER_DEFER: return (dgettext(TEXT_DOMAIN, "this action requires the " "resilver_defer feature")); case EZFS_EXPORT_IN_PROGRESS: return (dgettext(TEXT_DOMAIN, "pool export in progress")); case EZFS_REBUILDING: return (dgettext(TEXT_DOMAIN, "currently sequentially " "resilvering")); case EZFS_VDEV_NOTSUP: return (dgettext(TEXT_DOMAIN, "operation not supported " "on this type of vdev")); case EZFS_NOT_USER_NAMESPACE: return (dgettext(TEXT_DOMAIN, "the provided file " "was not a user namespace file")); case EZFS_RESUME_EXISTS: return (dgettext(TEXT_DOMAIN, "Resuming recv on existing " "dataset without force")); case EZFS_UNKNOWN: return (dgettext(TEXT_DOMAIN, "unknown error")); default: assert(hdl->libzfs_error == 0); return (dgettext(TEXT_DOMAIN, "no error")); } } void zfs_error_aux(libzfs_handle_t *hdl, const char *fmt, ...) { va_list ap; va_start(ap, fmt); (void) vsnprintf(hdl->libzfs_desc, sizeof (hdl->libzfs_desc), fmt, ap); hdl->libzfs_desc_active = 1; va_end(ap); } static void zfs_verror(libzfs_handle_t *hdl, int error, const char *fmt, va_list ap) { (void) vsnprintf(hdl->libzfs_action, sizeof (hdl->libzfs_action), fmt, ap); hdl->libzfs_error = error; if (hdl->libzfs_desc_active) hdl->libzfs_desc_active = 0; else hdl->libzfs_desc[0] = '\0'; if (hdl->libzfs_printerr) { if (error == EZFS_UNKNOWN) { (void) fprintf(stderr, dgettext(TEXT_DOMAIN, "internal " "error: %s: %s\n"), hdl->libzfs_action, libzfs_error_description(hdl)); abort(); } (void) fprintf(stderr, "%s: %s\n", hdl->libzfs_action, libzfs_error_description(hdl)); if (error == EZFS_NOMEM) exit(1); } } int zfs_error(libzfs_handle_t *hdl, int error, const char *msg) { return (zfs_error_fmt(hdl, error, "%s", msg)); } int zfs_error_fmt(libzfs_handle_t *hdl, int error, const char *fmt, ...) { va_list ap; va_start(ap, fmt); zfs_verror(hdl, error, fmt, ap); va_end(ap); return (-1); } static int zfs_common_error(libzfs_handle_t *hdl, int error, const char *fmt, va_list ap) { switch (error) { case EPERM: case EACCES: zfs_verror(hdl, EZFS_PERM, fmt, ap); return (-1); case ECANCELED: zfs_verror(hdl, EZFS_NODELEGATION, fmt, ap); return (-1); case EIO: zfs_verror(hdl, EZFS_IO, fmt, ap); return (-1); case EFAULT: zfs_verror(hdl, EZFS_FAULT, fmt, ap); return (-1); case EINTR: zfs_verror(hdl, EZFS_INTR, fmt, ap); return (-1); case ECKSUM: zfs_verror(hdl, EZFS_CKSUM, fmt, ap); return (-1); } return (0); } int zfs_standard_error(libzfs_handle_t *hdl, int error, const char *msg) { return (zfs_standard_error_fmt(hdl, error, "%s", msg)); } int zfs_standard_error_fmt(libzfs_handle_t *hdl, int error, const char *fmt, ...) { va_list ap; va_start(ap, fmt); if (zfs_common_error(hdl, error, fmt, ap) != 0) { va_end(ap); return (-1); } switch (error) { case ENXIO: case ENODEV: case EPIPE: zfs_verror(hdl, EZFS_IO, fmt, ap); break; case ENOENT: zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "dataset does not exist")); zfs_verror(hdl, EZFS_NOENT, fmt, ap); break; case ENOSPC: case EDQUOT: zfs_verror(hdl, EZFS_NOSPC, fmt, ap); break; case EEXIST: zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "dataset already exists")); zfs_verror(hdl, EZFS_EXISTS, fmt, ap); break; case EBUSY: zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "dataset is busy")); zfs_verror(hdl, EZFS_BUSY, fmt, ap); break; case EROFS: zfs_verror(hdl, EZFS_POOLREADONLY, fmt, ap); break; case ENAMETOOLONG: zfs_verror(hdl, EZFS_NAMETOOLONG, fmt, ap); break; case ENOTSUP: zfs_verror(hdl, EZFS_BADVERSION, fmt, ap); break; case EAGAIN: zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "pool I/O is currently suspended")); zfs_verror(hdl, EZFS_POOLUNAVAIL, fmt, ap); break; case EREMOTEIO: zfs_verror(hdl, EZFS_ACTIVE_POOL, fmt, ap); break; case ZFS_ERR_UNKNOWN_SEND_STREAM_FEATURE: case ZFS_ERR_IOC_CMD_UNAVAIL: zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "the loaded zfs " "module does not support this operation. A reboot may " "be required to enable this operation.")); zfs_verror(hdl, EZFS_IOC_NOTSUPPORTED, fmt, ap); break; case ZFS_ERR_IOC_ARG_UNAVAIL: zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "the loaded zfs " "module does not support an option for this operation. " "A reboot may be required to enable this option.")); zfs_verror(hdl, EZFS_IOC_NOTSUPPORTED, fmt, ap); break; case ZFS_ERR_IOC_ARG_REQUIRED: case ZFS_ERR_IOC_ARG_BADTYPE: zfs_verror(hdl, EZFS_IOC_NOTSUPPORTED, fmt, ap); break; case ZFS_ERR_WRONG_PARENT: zfs_verror(hdl, EZFS_WRONG_PARENT, fmt, ap); break; case ZFS_ERR_BADPROP: zfs_verror(hdl, EZFS_BADPROP, fmt, ap); break; case ZFS_ERR_NOT_USER_NAMESPACE: zfs_verror(hdl, EZFS_NOT_USER_NAMESPACE, fmt, ap); break; default: zfs_error_aux(hdl, "%s", strerror(error)); zfs_verror(hdl, EZFS_UNKNOWN, fmt, ap); break; } va_end(ap); return (-1); } void zfs_setprop_error(libzfs_handle_t *hdl, zfs_prop_t prop, int err, char *errbuf) { switch (err) { case ENOSPC: /* * For quotas and reservations, ENOSPC indicates * something different; setting a quota or reservation * doesn't use any disk space. */ switch (prop) { case ZFS_PROP_QUOTA: case ZFS_PROP_REFQUOTA: zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "size is less than current used or " "reserved space")); (void) zfs_error(hdl, EZFS_PROPSPACE, errbuf); break; case ZFS_PROP_RESERVATION: case ZFS_PROP_REFRESERVATION: zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "size is greater than available space")); (void) zfs_error(hdl, EZFS_PROPSPACE, errbuf); break; default: (void) zfs_standard_error(hdl, err, errbuf); break; } break; case EBUSY: (void) zfs_standard_error(hdl, EBUSY, errbuf); break; case EROFS: (void) zfs_error(hdl, EZFS_DSREADONLY, errbuf); break; case E2BIG: zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "property value too long")); (void) zfs_error(hdl, EZFS_BADPROP, errbuf); break; case ENOTSUP: zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "pool and or dataset must be upgraded to set this " "property or value")); (void) zfs_error(hdl, EZFS_BADVERSION, errbuf); break; case ERANGE: if (prop == ZFS_PROP_COMPRESSION || prop == ZFS_PROP_DNODESIZE || prop == ZFS_PROP_RECORDSIZE) { (void) zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "property setting is not allowed on " "bootable datasets")); (void) zfs_error(hdl, EZFS_NOTSUP, errbuf); } else if (prop == ZFS_PROP_CHECKSUM || prop == ZFS_PROP_DEDUP) { (void) zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "property setting is not allowed on " "root pools")); (void) zfs_error(hdl, EZFS_NOTSUP, errbuf); } else { (void) zfs_standard_error(hdl, err, errbuf); } break; case EINVAL: if (prop == ZPROP_INVAL) { (void) zfs_error(hdl, EZFS_BADPROP, errbuf); } else { (void) zfs_standard_error(hdl, err, errbuf); } break; case ZFS_ERR_BADPROP: (void) zfs_error(hdl, EZFS_BADPROP, errbuf); break; case EACCES: if (prop == ZFS_PROP_KEYLOCATION) { zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "keylocation may only be set on encryption roots")); (void) zfs_error(hdl, EZFS_BADPROP, errbuf); } else { (void) zfs_standard_error(hdl, err, errbuf); } break; case EOVERFLOW: /* * This platform can't address a volume this big. */ #ifdef _ILP32 if (prop == ZFS_PROP_VOLSIZE) { (void) zfs_error(hdl, EZFS_VOLTOOBIG, errbuf); break; } zfs_fallthrough; #endif default: (void) zfs_standard_error(hdl, err, errbuf); } } int zpool_standard_error(libzfs_handle_t *hdl, int error, const char *msg) { return (zpool_standard_error_fmt(hdl, error, "%s", msg)); } int zpool_standard_error_fmt(libzfs_handle_t *hdl, int error, const char *fmt, ...) { va_list ap; va_start(ap, fmt); if (zfs_common_error(hdl, error, fmt, ap) != 0) { va_end(ap); return (-1); } switch (error) { case ENODEV: zfs_verror(hdl, EZFS_NODEVICE, fmt, ap); break; case ENOENT: zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "no such pool or dataset")); zfs_verror(hdl, EZFS_NOENT, fmt, ap); break; case EEXIST: zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "pool already exists")); zfs_verror(hdl, EZFS_EXISTS, fmt, ap); break; case EBUSY: zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "pool is busy")); zfs_verror(hdl, EZFS_BUSY, fmt, ap); break; /* There is no pending operation to cancel */ case ENOTACTIVE: zfs_verror(hdl, EZFS_NO_PENDING, fmt, ap); break; case ENXIO: zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "one or more devices is currently unavailable")); zfs_verror(hdl, EZFS_BADDEV, fmt, ap); break; case ENAMETOOLONG: zfs_verror(hdl, EZFS_DEVOVERFLOW, fmt, ap); break; case ENOTSUP: zfs_verror(hdl, EZFS_POOL_NOTSUP, fmt, ap); break; case EINVAL: zfs_verror(hdl, EZFS_POOL_INVALARG, fmt, ap); break; case ENOSPC: case EDQUOT: zfs_verror(hdl, EZFS_NOSPC, fmt, ap); break; case EAGAIN: zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "pool I/O is currently suspended")); zfs_verror(hdl, EZFS_POOLUNAVAIL, fmt, ap); break; case EROFS: zfs_verror(hdl, EZFS_POOLREADONLY, fmt, ap); break; case EDOM: zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "block size out of range or does not match")); zfs_verror(hdl, EZFS_BADPROP, fmt, ap); break; case EREMOTEIO: zfs_verror(hdl, EZFS_ACTIVE_POOL, fmt, ap); break; case ZFS_ERR_CHECKPOINT_EXISTS: zfs_verror(hdl, EZFS_CHECKPOINT_EXISTS, fmt, ap); break; case ZFS_ERR_DISCARDING_CHECKPOINT: zfs_verror(hdl, EZFS_DISCARDING_CHECKPOINT, fmt, ap); break; case ZFS_ERR_NO_CHECKPOINT: zfs_verror(hdl, EZFS_NO_CHECKPOINT, fmt, ap); break; case ZFS_ERR_DEVRM_IN_PROGRESS: zfs_verror(hdl, EZFS_DEVRM_IN_PROGRESS, fmt, ap); break; case ZFS_ERR_VDEV_TOO_BIG: zfs_verror(hdl, EZFS_VDEV_TOO_BIG, fmt, ap); break; case ZFS_ERR_EXPORT_IN_PROGRESS: zfs_verror(hdl, EZFS_EXPORT_IN_PROGRESS, fmt, ap); break; case ZFS_ERR_RESILVER_IN_PROGRESS: zfs_verror(hdl, EZFS_RESILVERING, fmt, ap); break; case ZFS_ERR_REBUILD_IN_PROGRESS: zfs_verror(hdl, EZFS_REBUILDING, fmt, ap); break; case ZFS_ERR_BADPROP: zfs_verror(hdl, EZFS_BADPROP, fmt, ap); break; case ZFS_ERR_VDEV_NOTSUP: zfs_verror(hdl, EZFS_VDEV_NOTSUP, fmt, ap); break; case ZFS_ERR_IOC_CMD_UNAVAIL: zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "the loaded zfs " "module does not support this operation. A reboot may " "be required to enable this operation.")); zfs_verror(hdl, EZFS_IOC_NOTSUPPORTED, fmt, ap); break; case ZFS_ERR_IOC_ARG_UNAVAIL: zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "the loaded zfs " "module does not support an option for this operation. " "A reboot may be required to enable this option.")); zfs_verror(hdl, EZFS_IOC_NOTSUPPORTED, fmt, ap); break; case ZFS_ERR_IOC_ARG_REQUIRED: case ZFS_ERR_IOC_ARG_BADTYPE: zfs_verror(hdl, EZFS_IOC_NOTSUPPORTED, fmt, ap); break; default: zfs_error_aux(hdl, "%s", strerror(error)); zfs_verror(hdl, EZFS_UNKNOWN, fmt, ap); } va_end(ap); return (-1); } /* * Display an out of memory error message and abort the current program. */ int no_memory(libzfs_handle_t *hdl) { return (zfs_error(hdl, EZFS_NOMEM, "internal error")); } /* * A safe form of malloc() which will die if the allocation fails. */ void * zfs_alloc(libzfs_handle_t *hdl, size_t size) { void *data; if ((data = calloc(1, size)) == NULL) (void) no_memory(hdl); return (data); } /* * A safe form of asprintf() which will die if the allocation fails. */ char * zfs_asprintf(libzfs_handle_t *hdl, const char *fmt, ...) { va_list ap; char *ret; int err; va_start(ap, fmt); err = vasprintf(&ret, fmt, ap); va_end(ap); if (err < 0) { (void) no_memory(hdl); ret = NULL; } return (ret); } /* * A safe form of realloc(), which also zeroes newly allocated space. */ void * zfs_realloc(libzfs_handle_t *hdl, void *ptr, size_t oldsize, size_t newsize) { void *ret; if ((ret = realloc(ptr, newsize)) == NULL) { (void) no_memory(hdl); return (NULL); } memset((char *)ret + oldsize, 0, newsize - oldsize); return (ret); } /* * A safe form of strdup() which will die if the allocation fails. */ char * zfs_strdup(libzfs_handle_t *hdl, const char *str) { char *ret; if ((ret = strdup(str)) == NULL) (void) no_memory(hdl); return (ret); } void libzfs_print_on_error(libzfs_handle_t *hdl, boolean_t printerr) { hdl->libzfs_printerr = printerr; } /* * Read lines from an open file descriptor and store them in an array of * strings until EOF. lines[] will be allocated and populated with all the * lines read. All newlines are replaced with NULL terminators for * convenience. lines[] must be freed after use with libzfs_free_str_array(). * * Returns the number of lines read. */ static int libzfs_read_stdout_from_fd(int fd, char **lines[]) { FILE *fp; int lines_cnt = 0; size_t len = 0; char *line = NULL; char **tmp_lines = NULL, **tmp; fp = fdopen(fd, "r"); if (fp == NULL) { close(fd); return (0); } while (getline(&line, &len, fp) != -1) { tmp = realloc(tmp_lines, sizeof (*tmp_lines) * (lines_cnt + 1)); if (tmp == NULL) { /* Return the lines we were able to process */ break; } tmp_lines = tmp; /* Remove newline if not EOF */ if (line[strlen(line) - 1] == '\n') line[strlen(line) - 1] = '\0'; tmp_lines[lines_cnt] = strdup(line); if (tmp_lines[lines_cnt] == NULL) break; ++lines_cnt; } free(line); fclose(fp); *lines = tmp_lines; return (lines_cnt); } static int libzfs_run_process_impl(const char *path, char *argv[], char *env[], int flags, char **lines[], int *lines_cnt) { pid_t pid; int error, devnull_fd; int link[2]; /* * Setup a pipe between our child and parent process if we're * reading stdout. */ if (lines != NULL && pipe2(link, O_NONBLOCK | O_CLOEXEC) == -1) return (-EPIPE); pid = fork(); if (pid == 0) { /* Child process */ devnull_fd = open("/dev/null", O_WRONLY | O_CLOEXEC); if (devnull_fd < 0) _exit(-1); if (!(flags & STDOUT_VERBOSE) && (lines == NULL)) (void) dup2(devnull_fd, STDOUT_FILENO); else if (lines != NULL) { /* Save the output to lines[] */ dup2(link[1], STDOUT_FILENO); } if (!(flags & STDERR_VERBOSE)) (void) dup2(devnull_fd, STDERR_FILENO); if (flags & NO_DEFAULT_PATH) { if (env == NULL) execv(path, argv); else execve(path, argv, env); } else { if (env == NULL) execvp(path, argv); else execvpe(path, argv, env); } _exit(-1); } else if (pid > 0) { /* Parent process */ int status; while ((error = waitpid(pid, &status, 0)) == -1 && errno == EINTR) ; if (error < 0 || !WIFEXITED(status)) return (-1); if (lines != NULL) { close(link[1]); *lines_cnt = libzfs_read_stdout_from_fd(link[0], lines); } return (WEXITSTATUS(status)); } return (-1); } int libzfs_run_process(const char *path, char *argv[], int flags) { return (libzfs_run_process_impl(path, argv, NULL, flags, NULL, NULL)); } /* * Run a command and store its stdout lines in an array of strings (lines[]). * lines[] is allocated and populated for you, and the number of lines is set in * lines_cnt. lines[] must be freed after use with libzfs_free_str_array(). * All newlines (\n) in lines[] are terminated for convenience. */ int libzfs_run_process_get_stdout(const char *path, char *argv[], char *env[], char **lines[], int *lines_cnt) { return (libzfs_run_process_impl(path, argv, env, 0, lines, lines_cnt)); } /* * Same as libzfs_run_process_get_stdout(), but run without $PATH set. This * means that *path needs to be the full path to the executable. */ int libzfs_run_process_get_stdout_nopath(const char *path, char *argv[], char *env[], char **lines[], int *lines_cnt) { return (libzfs_run_process_impl(path, argv, env, NO_DEFAULT_PATH, lines, lines_cnt)); } /* * Free an array of strings. Free both the strings contained in the array and * the array itself. */ void libzfs_free_str_array(char **strs, int count) { while (--count >= 0) free(strs[count]); free(strs); } /* * Returns 1 if environment variable is set to "YES", "yes", "ON", "on", or * a non-zero number. * * Returns 0 otherwise. */ boolean_t libzfs_envvar_is_set(const char *envvar) { char *env = getenv(envvar); return (env && (strtoul(env, NULL, 0) > 0 || (!strncasecmp(env, "YES", 3) && strnlen(env, 4) == 3) || (!strncasecmp(env, "ON", 2) && strnlen(env, 3) == 2))); } libzfs_handle_t * libzfs_init(void) { libzfs_handle_t *hdl; int error; char *env; if ((error = libzfs_load_module()) != 0) { errno = error; return (NULL); } if ((hdl = calloc(1, sizeof (libzfs_handle_t))) == NULL) { return (NULL); } if (regcomp(&hdl->libzfs_urire, URI_REGEX, 0) != 0) { free(hdl); return (NULL); } if ((hdl->libzfs_fd = open(ZFS_DEV, O_RDWR|O_EXCL|O_CLOEXEC)) < 0) { free(hdl); return (NULL); } if (libzfs_core_init() != 0) { (void) close(hdl->libzfs_fd); free(hdl); return (NULL); } zfs_prop_init(); zpool_prop_init(); zpool_feature_init(); vdev_prop_init(); libzfs_mnttab_init(hdl); fletcher_4_init(); if (getenv("ZFS_PROP_DEBUG") != NULL) { hdl->libzfs_prop_debug = B_TRUE; } if ((env = getenv("ZFS_SENDRECV_MAX_NVLIST")) != NULL) { if ((error = zfs_nicestrtonum(hdl, env, &hdl->libzfs_max_nvlist))) { errno = error; (void) close(hdl->libzfs_fd); free(hdl); return (NULL); } } else { hdl->libzfs_max_nvlist = (SPA_MAXBLOCKSIZE * 4); } /* * For testing, remove some settable properties and features */ if (libzfs_envvar_is_set("ZFS_SYSFS_PROP_SUPPORT_TEST")) { zprop_desc_t *proptbl; proptbl = zpool_prop_get_table(); proptbl[ZPOOL_PROP_COMMENT].pd_zfs_mod_supported = B_FALSE; proptbl = zfs_prop_get_table(); proptbl[ZFS_PROP_DNODESIZE].pd_zfs_mod_supported = B_FALSE; zfeature_info_t *ftbl = spa_feature_table; ftbl[SPA_FEATURE_LARGE_BLOCKS].fi_zfs_mod_supported = B_FALSE; } return (hdl); } void libzfs_fini(libzfs_handle_t *hdl) { (void) close(hdl->libzfs_fd); zpool_free_handles(hdl); namespace_clear(hdl); libzfs_mnttab_fini(hdl); libzfs_core_fini(); regfree(&hdl->libzfs_urire); fletcher_4_fini(); #if LIBFETCH_DYNAMIC if (hdl->libfetch != (void *)-1 && hdl->libfetch != NULL) (void) dlclose(hdl->libfetch); free(hdl->libfetch_load_error); #endif free(hdl); } libzfs_handle_t * zpool_get_handle(zpool_handle_t *zhp) { return (zhp->zpool_hdl); } libzfs_handle_t * zfs_get_handle(zfs_handle_t *zhp) { return (zhp->zfs_hdl); } zpool_handle_t * zfs_get_pool_handle(const zfs_handle_t *zhp) { return (zhp->zpool_hdl); } /* * Given a name, determine whether or not it's a valid path * (starts with '/' or "./"). If so, walk the mnttab trying * to match the device number. If not, treat the path as an * fs/vol/snap/bkmark name. */ zfs_handle_t * zfs_path_to_zhandle(libzfs_handle_t *hdl, const char *path, zfs_type_t argtype) { struct stat64 statbuf; struct extmnttab entry; if (path[0] != '/' && strncmp(path, "./", strlen("./")) != 0) { /* * It's not a valid path, assume it's a name of type 'argtype'. */ return (zfs_open(hdl, path, argtype)); } if (getextmntent(path, &entry, &statbuf) != 0) return (NULL); if (strcmp(entry.mnt_fstype, MNTTYPE_ZFS) != 0) { (void) fprintf(stderr, gettext("'%s': not a ZFS filesystem\n"), path); return (NULL); } return (zfs_open(hdl, entry.mnt_special, ZFS_TYPE_FILESYSTEM)); } /* * Initialize the zc_nvlist_dst member to prepare for receiving an nvlist from * an ioctl(). */ void zcmd_alloc_dst_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc, size_t len) { if (len == 0) len = 256 * 1024; zc->zc_nvlist_dst_size = len; zc->zc_nvlist_dst = (uint64_t)(uintptr_t)zfs_alloc(hdl, zc->zc_nvlist_dst_size); } /* * Called when an ioctl() which returns an nvlist fails with ENOMEM. This will * expand the nvlist to the size specified in 'zc_nvlist_dst_size', which was * filled in by the kernel to indicate the actual required size. */ void zcmd_expand_dst_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc) { free((void *)(uintptr_t)zc->zc_nvlist_dst); zc->zc_nvlist_dst = (uint64_t)(uintptr_t)zfs_alloc(hdl, zc->zc_nvlist_dst_size); } /* * Called to free the src and dst nvlists stored in the command structure. */ void zcmd_free_nvlists(zfs_cmd_t *zc) { free((void *)(uintptr_t)zc->zc_nvlist_conf); free((void *)(uintptr_t)zc->zc_nvlist_src); free((void *)(uintptr_t)zc->zc_nvlist_dst); zc->zc_nvlist_conf = 0; zc->zc_nvlist_src = 0; zc->zc_nvlist_dst = 0; } static void zcmd_write_nvlist_com(libzfs_handle_t *hdl, uint64_t *outnv, uint64_t *outlen, nvlist_t *nvl) { char *packed; size_t len = fnvlist_size(nvl); packed = zfs_alloc(hdl, len); verify(nvlist_pack(nvl, &packed, &len, NV_ENCODE_NATIVE, 0) == 0); *outnv = (uint64_t)(uintptr_t)packed; *outlen = len; } void zcmd_write_conf_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc, nvlist_t *nvl) { zcmd_write_nvlist_com(hdl, &zc->zc_nvlist_conf, &zc->zc_nvlist_conf_size, nvl); } void zcmd_write_src_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc, nvlist_t *nvl) { zcmd_write_nvlist_com(hdl, &zc->zc_nvlist_src, &zc->zc_nvlist_src_size, nvl); } /* * Unpacks an nvlist from the ZFS ioctl command structure. */ int zcmd_read_dst_nvlist(libzfs_handle_t *hdl, zfs_cmd_t *zc, nvlist_t **nvlp) { if (nvlist_unpack((void *)(uintptr_t)zc->zc_nvlist_dst, zc->zc_nvlist_dst_size, nvlp, 0) != 0) return (no_memory(hdl)); return (0); } /* * ================================================================ * API shared by zfs and zpool property management * ================================================================ */ static void zprop_print_headers(zprop_get_cbdata_t *cbp, zfs_type_t type) { zprop_list_t *pl; int i; char *title; size_t len; cbp->cb_first = B_FALSE; if (cbp->cb_scripted) return; /* * Start with the length of the column headers. */ cbp->cb_colwidths[GET_COL_NAME] = strlen(dgettext(TEXT_DOMAIN, "NAME")); cbp->cb_colwidths[GET_COL_PROPERTY] = strlen(dgettext(TEXT_DOMAIN, "PROPERTY")); cbp->cb_colwidths[GET_COL_VALUE] = strlen(dgettext(TEXT_DOMAIN, "VALUE")); cbp->cb_colwidths[GET_COL_RECVD] = strlen(dgettext(TEXT_DOMAIN, "RECEIVED")); cbp->cb_colwidths[GET_COL_SOURCE] = strlen(dgettext(TEXT_DOMAIN, "SOURCE")); /* first property is always NAME */ assert(cbp->cb_proplist->pl_prop == ((type == ZFS_TYPE_POOL) ? ZPOOL_PROP_NAME : ((type == ZFS_TYPE_VDEV) ? VDEV_PROP_NAME : ZFS_PROP_NAME))); /* * Go through and calculate the widths for each column. For the * 'source' column, we kludge it up by taking the worst-case scenario of * inheriting from the longest name. This is acceptable because in the * majority of cases 'SOURCE' is the last column displayed, and we don't * use the width anyway. Note that the 'VALUE' column can be oversized, * if the name of the property is much longer than any values we find. */ for (pl = cbp->cb_proplist; pl != NULL; pl = pl->pl_next) { /* * 'PROPERTY' column */ if (pl->pl_prop != ZPROP_USERPROP) { const char *propname = (type == ZFS_TYPE_POOL) ? zpool_prop_to_name(pl->pl_prop) : ((type == ZFS_TYPE_VDEV) ? vdev_prop_to_name(pl->pl_prop) : zfs_prop_to_name(pl->pl_prop)); assert(propname != NULL); len = strlen(propname); if (len > cbp->cb_colwidths[GET_COL_PROPERTY]) cbp->cb_colwidths[GET_COL_PROPERTY] = len; } else { assert(pl->pl_user_prop != NULL); len = strlen(pl->pl_user_prop); if (len > cbp->cb_colwidths[GET_COL_PROPERTY]) cbp->cb_colwidths[GET_COL_PROPERTY] = len; } /* * 'VALUE' column. The first property is always the 'name' * property that was tacked on either by /sbin/zfs's * zfs_do_get() or when calling zprop_expand_list(), so we * ignore its width. If the user specified the name property * to display, then it will be later in the list in any case. */ if (pl != cbp->cb_proplist && pl->pl_width > cbp->cb_colwidths[GET_COL_VALUE]) cbp->cb_colwidths[GET_COL_VALUE] = pl->pl_width; /* 'RECEIVED' column. */ if (pl != cbp->cb_proplist && pl->pl_recvd_width > cbp->cb_colwidths[GET_COL_RECVD]) cbp->cb_colwidths[GET_COL_RECVD] = pl->pl_recvd_width; /* * 'NAME' and 'SOURCE' columns */ if (pl->pl_prop == ((type == ZFS_TYPE_POOL) ? ZPOOL_PROP_NAME : ((type == ZFS_TYPE_VDEV) ? VDEV_PROP_NAME : ZFS_PROP_NAME)) && pl->pl_width > cbp->cb_colwidths[GET_COL_NAME]) { cbp->cb_colwidths[GET_COL_NAME] = pl->pl_width; cbp->cb_colwidths[GET_COL_SOURCE] = pl->pl_width + strlen(dgettext(TEXT_DOMAIN, "inherited from")); } } /* * Now go through and print the headers. */ for (i = 0; i < ZFS_GET_NCOLS; i++) { switch (cbp->cb_columns[i]) { case GET_COL_NAME: title = dgettext(TEXT_DOMAIN, "NAME"); break; case GET_COL_PROPERTY: title = dgettext(TEXT_DOMAIN, "PROPERTY"); break; case GET_COL_VALUE: title = dgettext(TEXT_DOMAIN, "VALUE"); break; case GET_COL_RECVD: title = dgettext(TEXT_DOMAIN, "RECEIVED"); break; case GET_COL_SOURCE: title = dgettext(TEXT_DOMAIN, "SOURCE"); break; default: title = NULL; } if (title != NULL) { if (i == (ZFS_GET_NCOLS - 1) || cbp->cb_columns[i + 1] == GET_COL_NONE) (void) printf("%s", title); else (void) printf("%-*s ", cbp->cb_colwidths[cbp->cb_columns[i]], title); } } (void) printf("\n"); } /* * Display a single line of output, according to the settings in the callback * structure. */ void zprop_print_one_property(const char *name, zprop_get_cbdata_t *cbp, const char *propname, const char *value, zprop_source_t sourcetype, const char *source, const char *recvd_value) { int i; const char *str = NULL; char buf[128]; /* * Ignore those source types that the user has chosen to ignore. */ if ((sourcetype & cbp->cb_sources) == 0) return; if (cbp->cb_first) zprop_print_headers(cbp, cbp->cb_type); for (i = 0; i < ZFS_GET_NCOLS; i++) { switch (cbp->cb_columns[i]) { case GET_COL_NAME: str = name; break; case GET_COL_PROPERTY: str = propname; break; case GET_COL_VALUE: str = value; break; case GET_COL_SOURCE: switch (sourcetype) { case ZPROP_SRC_NONE: str = "-"; break; case ZPROP_SRC_DEFAULT: str = "default"; break; case ZPROP_SRC_LOCAL: str = "local"; break; case ZPROP_SRC_TEMPORARY: str = "temporary"; break; case ZPROP_SRC_INHERITED: (void) snprintf(buf, sizeof (buf), "inherited from %s", source); str = buf; break; case ZPROP_SRC_RECEIVED: str = "received"; break; default: str = NULL; assert(!"unhandled zprop_source_t"); } break; case GET_COL_RECVD: str = (recvd_value == NULL ? "-" : recvd_value); break; default: continue; } if (i == (ZFS_GET_NCOLS - 1) || cbp->cb_columns[i + 1] == GET_COL_NONE) (void) printf("%s", str); else if (cbp->cb_scripted) (void) printf("%s\t", str); else (void) printf("%-*s ", cbp->cb_colwidths[cbp->cb_columns[i]], str); } (void) printf("\n"); } /* * Given a numeric suffix, convert the value into a number of bits that the * resulting value must be shifted. */ static int str2shift(libzfs_handle_t *hdl, const char *buf) { const char *ends = "BKMGTPEZ"; int i; if (buf[0] == '\0') return (0); for (i = 0; i < strlen(ends); i++) { if (toupper(buf[0]) == ends[i]) break; } if (i == strlen(ends)) { if (hdl) zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "invalid numeric suffix '%s'"), buf); return (-1); } /* * Allow 'G' = 'GB' = 'GiB', case-insensitively. * However, 'BB' and 'BiB' are disallowed. */ if (buf[1] == '\0' || (toupper(buf[0]) != 'B' && ((toupper(buf[1]) == 'B' && buf[2] == '\0') || (toupper(buf[1]) == 'I' && toupper(buf[2]) == 'B' && buf[3] == '\0')))) return (10 * i); if (hdl) zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "invalid numeric suffix '%s'"), buf); return (-1); } /* * Convert a string of the form '100G' into a real number. Used when setting * properties or creating a volume. 'buf' is used to place an extended error * message for the caller to use. */ int zfs_nicestrtonum(libzfs_handle_t *hdl, const char *value, uint64_t *num) { char *end; int shift; *num = 0; /* Check to see if this looks like a number. */ if ((value[0] < '0' || value[0] > '9') && value[0] != '.') { if (hdl) zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "bad numeric value '%s'"), value); return (-1); } /* Rely on strtoull() to process the numeric portion. */ errno = 0; *num = strtoull(value, &end, 10); /* * Check for ERANGE, which indicates that the value is too large to fit * in a 64-bit value. */ if (errno == ERANGE) { if (hdl) zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "numeric value is too large")); return (-1); } /* * If we have a decimal value, then do the computation with floating * point arithmetic. Otherwise, use standard arithmetic. */ if (*end == '.') { double fval = strtod(value, &end); if ((shift = str2shift(hdl, end)) == -1) return (-1); fval *= pow(2, shift); /* * UINT64_MAX is not exactly representable as a double. * The closest representation is UINT64_MAX + 1, so we * use a >= comparison instead of > for the bounds check. */ if (fval >= (double)UINT64_MAX) { if (hdl) zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "numeric value is too large")); return (-1); } *num = (uint64_t)fval; } else { if ((shift = str2shift(hdl, end)) == -1) return (-1); /* Check for overflow */ if (shift >= 64 || (*num << shift) >> shift != *num) { if (hdl) zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "numeric value is too large")); return (-1); } *num <<= shift; } return (0); } /* * Given a propname=value nvpair to set, parse any numeric properties * (index, boolean, etc) if they are specified as strings and add the * resulting nvpair to the returned nvlist. * * At the DSL layer, all properties are either 64-bit numbers or strings. * We want the user to be able to ignore this fact and specify properties * as native values (numbers, for example) or as strings (to simplify * command line utilities). This also handles converting index types * (compression, checksum, etc) from strings to their on-disk index. */ int zprop_parse_value(libzfs_handle_t *hdl, nvpair_t *elem, int prop, zfs_type_t type, nvlist_t *ret, const char **svalp, uint64_t *ivalp, const char *errbuf) { data_type_t datatype = nvpair_type(elem); zprop_type_t proptype; const char *propname; const char *value; boolean_t isnone = B_FALSE; boolean_t isauto = B_FALSE; int err = 0; if (type == ZFS_TYPE_POOL) { proptype = zpool_prop_get_type(prop); propname = zpool_prop_to_name(prop); } else if (type == ZFS_TYPE_VDEV) { proptype = vdev_prop_get_type(prop); propname = vdev_prop_to_name(prop); } else { proptype = zfs_prop_get_type(prop); propname = zfs_prop_to_name(prop); } /* * Convert any properties to the internal DSL value types. */ *svalp = NULL; *ivalp = 0; switch (proptype) { case PROP_TYPE_STRING: if (datatype != DATA_TYPE_STRING) { zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "'%s' must be a string"), nvpair_name(elem)); goto error; } err = nvpair_value_string(elem, svalp); if (err != 0) { zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "'%s' is invalid"), nvpair_name(elem)); goto error; } if (strlen(*svalp) >= ZFS_MAXPROPLEN) { zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "'%s' is too long"), nvpair_name(elem)); goto error; } break; case PROP_TYPE_NUMBER: if (datatype == DATA_TYPE_STRING) { (void) nvpair_value_string(elem, &value); if (strcmp(value, "none") == 0) { isnone = B_TRUE; } else if (strcmp(value, "auto") == 0) { isauto = B_TRUE; } else if (zfs_nicestrtonum(hdl, value, ivalp) != 0) { goto error; } } else if (datatype == DATA_TYPE_UINT64) { (void) nvpair_value_uint64(elem, ivalp); } else { zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "'%s' must be a number"), nvpair_name(elem)); goto error; } /* * Quota special: force 'none' and don't allow 0. */ if ((type & ZFS_TYPE_DATASET) && *ivalp == 0 && !isnone && (prop == ZFS_PROP_QUOTA || prop == ZFS_PROP_REFQUOTA)) { zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "use 'none' to disable quota/refquota")); goto error; } /* * Special handling for "*_limit=none". In this case it's not * 0 but UINT64_MAX. */ if ((type & ZFS_TYPE_DATASET) && isnone && (prop == ZFS_PROP_FILESYSTEM_LIMIT || prop == ZFS_PROP_SNAPSHOT_LIMIT)) { *ivalp = UINT64_MAX; } /* * Special handling for "checksum_*=none". In this case it's not * 0 but UINT64_MAX. */ if ((type & ZFS_TYPE_VDEV) && isnone && (prop == VDEV_PROP_CHECKSUM_N || prop == VDEV_PROP_CHECKSUM_T || prop == VDEV_PROP_IO_N || prop == VDEV_PROP_IO_T)) { *ivalp = UINT64_MAX; } /* * Special handling for setting 'refreservation' to 'auto'. Use * UINT64_MAX to tell the caller to use zfs_fix_auto_resv(). * 'auto' is only allowed on volumes. */ if (isauto) { switch (prop) { case ZFS_PROP_REFRESERVATION: if ((type & ZFS_TYPE_VOLUME) == 0) { zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "'%s=auto' only allowed on " "volumes"), nvpair_name(elem)); goto error; } *ivalp = UINT64_MAX; break; default: zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "'auto' is invalid value for '%s'"), nvpair_name(elem)); goto error; } } break; case PROP_TYPE_INDEX: if (datatype != DATA_TYPE_STRING) { zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "'%s' must be a string"), nvpair_name(elem)); goto error; } (void) nvpair_value_string(elem, &value); if (zprop_string_to_index(prop, value, ivalp, type) != 0) { zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "'%s' must be one of '%s'"), propname, zprop_values(prop, type)); goto error; } break; default: abort(); } /* * Add the result to our return set of properties. */ if (*svalp != NULL) { if (nvlist_add_string(ret, propname, *svalp) != 0) { (void) no_memory(hdl); return (-1); } } else { if (nvlist_add_uint64(ret, propname, *ivalp) != 0) { (void) no_memory(hdl); return (-1); } } return (0); error: (void) zfs_error(hdl, EZFS_BADPROP, errbuf); return (-1); } static int addlist(libzfs_handle_t *hdl, const char *propname, zprop_list_t **listp, zfs_type_t type) { int prop = zprop_name_to_prop(propname, type); if (prop != ZPROP_INVAL && !zprop_valid_for_type(prop, type, B_FALSE)) prop = ZPROP_INVAL; /* * Return failure if no property table entry was found and this isn't * a user-defined property. */ if (prop == ZPROP_USERPROP && ((type == ZFS_TYPE_POOL && !zfs_prop_user(propname) && !zpool_prop_feature(propname) && !zpool_prop_unsupported(propname)) || ((type == ZFS_TYPE_DATASET) && !zfs_prop_user(propname) && !zfs_prop_userquota(propname) && !zfs_prop_written(propname)) || ((type == ZFS_TYPE_VDEV) && !vdev_prop_user(propname)))) { zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "invalid property '%s'"), propname); return (zfs_error(hdl, EZFS_BADPROP, dgettext(TEXT_DOMAIN, "bad property list"))); } zprop_list_t *entry = zfs_alloc(hdl, sizeof (*entry)); entry->pl_prop = prop; if (prop == ZPROP_USERPROP) { entry->pl_user_prop = zfs_strdup(hdl, propname); entry->pl_width = strlen(propname); } else { entry->pl_width = zprop_width(prop, &entry->pl_fixed, type); } *listp = entry; return (0); } /* * Given a comma-separated list of properties, construct a property list * containing both user-defined and native properties. This function will * return a NULL list if 'all' is specified, which can later be expanded * by zprop_expand_list(). */ int zprop_get_list(libzfs_handle_t *hdl, char *props, zprop_list_t **listp, zfs_type_t type) { *listp = NULL; /* * If 'all' is specified, return a NULL list. */ if (strcmp(props, "all") == 0) return (0); /* * If no props were specified, return an error. */ if (props[0] == '\0') { zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "no properties specified")); return (zfs_error(hdl, EZFS_BADPROP, dgettext(TEXT_DOMAIN, "bad property list"))); } for (char *p; (p = strsep(&props, ",")); ) if (strcmp(p, "space") == 0) { static const char *const spaceprops[] = { "name", "avail", "used", "usedbysnapshots", "usedbydataset", "usedbyrefreservation", "usedbychildren" }; for (int i = 0; i < ARRAY_SIZE(spaceprops); i++) { if (addlist(hdl, spaceprops[i], listp, type)) return (-1); listp = &(*listp)->pl_next; } } else { if (addlist(hdl, p, listp, type)) return (-1); listp = &(*listp)->pl_next; } return (0); } void zprop_free_list(zprop_list_t *pl) { zprop_list_t *next; while (pl != NULL) { next = pl->pl_next; free(pl->pl_user_prop); free(pl); pl = next; } } typedef struct expand_data { zprop_list_t **last; libzfs_handle_t *hdl; zfs_type_t type; } expand_data_t; static int zprop_expand_list_cb(int prop, void *cb) { zprop_list_t *entry; expand_data_t *edp = cb; entry = zfs_alloc(edp->hdl, sizeof (zprop_list_t)); entry->pl_prop = prop; entry->pl_width = zprop_width(prop, &entry->pl_fixed, edp->type); entry->pl_all = B_TRUE; *(edp->last) = entry; edp->last = &entry->pl_next; return (ZPROP_CONT); } int zprop_expand_list(libzfs_handle_t *hdl, zprop_list_t **plp, zfs_type_t type) { zprop_list_t *entry; zprop_list_t **last; expand_data_t exp; if (*plp == NULL) { /* * If this is the very first time we've been called for an 'all' * specification, expand the list to include all native * properties. */ last = plp; exp.last = last; exp.hdl = hdl; exp.type = type; if (zprop_iter_common(zprop_expand_list_cb, &exp, B_FALSE, B_FALSE, type) == ZPROP_INVAL) return (-1); /* * Add 'name' to the beginning of the list, which is handled * specially. */ entry = zfs_alloc(hdl, sizeof (zprop_list_t)); entry->pl_prop = ((type == ZFS_TYPE_POOL) ? ZPOOL_PROP_NAME : ((type == ZFS_TYPE_VDEV) ? VDEV_PROP_NAME : ZFS_PROP_NAME)); entry->pl_width = zprop_width(entry->pl_prop, &entry->pl_fixed, type); entry->pl_all = B_TRUE; entry->pl_next = *plp; *plp = entry; } return (0); } int zprop_iter(zprop_func func, void *cb, boolean_t show_all, boolean_t ordered, zfs_type_t type) { return (zprop_iter_common(func, cb, show_all, ordered, type)); } const char * zfs_version_userland(void) { return (ZFS_META_ALIAS); } /* * Prints both zfs userland and kernel versions * Returns 0 on success, and -1 on error */ int zfs_version_print(void) { (void) puts(ZFS_META_ALIAS); char *kver = zfs_version_kernel(); if (kver == NULL) { fprintf(stderr, "zfs_version_kernel() failed: %s\n", strerror(errno)); return (-1); } (void) printf("zfs-kmod-%s\n", kver); free(kver); return (0); } /* * Return 1 if the user requested ANSI color output, and our terminal supports * it. Return 0 for no color. */ int use_color(void) { static int use_color = -1; char *term; /* * Optimization: * * For each zpool invocation, we do a single check to see if we should * be using color or not, and cache that value for the lifetime of the * the zpool command. That makes it cheap to call use_color() when * we're printing with color. We assume that the settings are not going * to change during the invocation of a zpool command (the user isn't * going to change the ZFS_COLOR value while zpool is running, for * example). */ if (use_color != -1) { /* * We've already figured out if we should be using color or * not. Return the cached value. */ return (use_color); } term = getenv("TERM"); /* * The user sets the ZFS_COLOR env var set to enable zpool ANSI color * output. However if NO_COLOR is set (https://no-color.org/) then * don't use it. Also, don't use color if terminal doesn't support * it. */ if (libzfs_envvar_is_set("ZFS_COLOR") && !libzfs_envvar_is_set("NO_COLOR") && isatty(STDOUT_FILENO) && term && strcmp("dumb", term) != 0 && strcmp("unknown", term) != 0) { /* Color supported */ use_color = 1; } else { use_color = 0; } return (use_color); } /* * The functions color_start() and color_end() are used for when you want * to colorize a block of text. * * For example: * color_start(ANSI_RED) * printf("hello"); * printf("world"); * color_end(); */ void color_start(const char *color) { if (color && use_color()) { fputs(color, stdout); fflush(stdout); } } void color_end(void) { if (use_color()) { fputs(ANSI_RESET, stdout); fflush(stdout); } } /* * printf() with a color. If color is NULL, then do a normal printf. */ int printf_color(const char *color, const char *format, ...) { va_list aptr; int rc; if (color) color_start(color); va_start(aptr, format); rc = vprintf(format, aptr); va_end(aptr); if (color) color_end(); return (rc); } /* PATH + 5 env vars + a NULL entry = 7 */ #define ZPOOL_VDEV_SCRIPT_ENV_COUNT 7 /* * There's a few places where ZFS will call external scripts (like the script * in zpool.d/ and `zfs_prepare_disk`). These scripts are called with a * reduced $PATH, and some vdev specific environment vars set. This function * will allocate an populate the environment variable array that is passed to * these scripts. The user must free the arrays with zpool_vdev_free_env() when * they are done. * * The following env vars will be set (but value could be blank): * * POOL_NAME * VDEV_PATH * VDEV_UPATH * VDEV_ENC_SYSFS_PATH * * In addition, you can set an optional environment variable named 'opt_key' * to 'opt_val' if you want. * * Returns allocated env[] array on success, NULL otherwise. */ char ** zpool_vdev_script_alloc_env(const char *pool_name, const char *vdev_path, const char *vdev_upath, const char *vdev_enc_sysfs_path, const char *opt_key, const char *opt_val) { char **env = NULL; int rc; env = calloc(ZPOOL_VDEV_SCRIPT_ENV_COUNT, sizeof (*env)); if (!env) return (NULL); env[0] = strdup("PATH=/bin:/sbin:/usr/bin:/usr/sbin"); if (!env[0]) goto error; /* Setup our custom environment variables */ rc = asprintf(&env[1], "POOL_NAME=%s", pool_name ? pool_name : ""); if (rc == -1) { env[1] = NULL; goto error; } rc = asprintf(&env[2], "VDEV_PATH=%s", vdev_path ? vdev_path : ""); if (rc == -1) { env[2] = NULL; goto error; } rc = asprintf(&env[3], "VDEV_UPATH=%s", vdev_upath ? vdev_upath : ""); if (rc == -1) { env[3] = NULL; goto error; } rc = asprintf(&env[4], "VDEV_ENC_SYSFS_PATH=%s", vdev_enc_sysfs_path ? vdev_enc_sysfs_path : ""); if (rc == -1) { env[4] = NULL; goto error; } if (opt_key != NULL) { rc = asprintf(&env[5], "%s=%s", opt_key, opt_val ? opt_val : ""); if (rc == -1) { env[5] = NULL; goto error; } } return (env); error: for (int i = 0; i < ZPOOL_VDEV_SCRIPT_ENV_COUNT; i++) free(env[i]); free(env); return (NULL); } /* * Free the env[] array that was allocated by zpool_vdev_script_alloc_env(). */ void zpool_vdev_script_free_env(char **env) { for (int i = 0; i < ZPOOL_VDEV_SCRIPT_ENV_COUNT; i++) free(env[i]); free(env); } /* * Prepare a disk by (optionally) running a program before labeling the disk. * This can be useful for installing disk firmware or doing some pre-flight * checks on the disk before it becomes part of the pool. The program run is * located at ZFSEXECDIR/zfs_prepare_disk * (E.x: /usr/local/libexec/zfs/zfs_prepare_disk). * * Return 0 on success, non-zero on failure. */ int zpool_prepare_disk(zpool_handle_t *zhp, nvlist_t *vdev_nv, const char *prepare_str, char **lines[], int *lines_cnt) { const char *script_path = ZFSEXECDIR "/zfs_prepare_disk"; const char *pool_name; int rc = 0; /* Path to script and a NULL entry */ char *argv[2] = {(char *)script_path}; char **env = NULL; const char *path = NULL, *enc_sysfs_path = NULL; char *upath; *lines_cnt = 0; if (access(script_path, X_OK) != 0) { /* No script, nothing to do */ return (0); } (void) nvlist_lookup_string(vdev_nv, ZPOOL_CONFIG_PATH, &path); (void) nvlist_lookup_string(vdev_nv, ZPOOL_CONFIG_VDEV_ENC_SYSFS_PATH, &enc_sysfs_path); upath = zfs_get_underlying_path(path); pool_name = zhp ? zpool_get_name(zhp) : NULL; env = zpool_vdev_script_alloc_env(pool_name, path, upath, enc_sysfs_path, "VDEV_PREPARE", prepare_str); free(upath); if (env == NULL) { return (ENOMEM); } rc = libzfs_run_process_get_stdout(script_path, argv, env, lines, lines_cnt); zpool_vdev_script_free_env(env); return (rc); } /* * Optionally run a script and then label a disk. The script can be used to * prepare a disk for inclusion into the pool. For example, it might update * the disk's firmware or check its health. * * The 'name' provided is the short name, stripped of any leading * /dev path, and is passed to zpool_label_disk. vdev_nv is the nvlist for * the vdev. prepare_str is a string that gets passed as the VDEV_PREPARE * env variable to the script. * * The following env vars are passed to the script: * * POOL_NAME: The pool name (blank during zpool create) * VDEV_PREPARE: Reason why the disk is being prepared for inclusion: * "create", "add", "replace", or "autoreplace" * VDEV_PATH: Path to the disk * VDEV_UPATH: One of the 'underlying paths' to the disk. This is * useful for DM devices. * VDEV_ENC_SYSFS_PATH: Path to the disk's enclosure sysfs path, if available. * * Note, some of these values can be blank. * * Return 0 on success, non-zero otherwise. */ int zpool_prepare_and_label_disk(libzfs_handle_t *hdl, zpool_handle_t *zhp, const char *name, nvlist_t *vdev_nv, const char *prepare_str, char **lines[], int *lines_cnt) { int rc; char vdev_path[MAXPATHLEN]; (void) snprintf(vdev_path, sizeof (vdev_path), "%s/%s", DISK_ROOT, name); /* zhp will be NULL when creating a pool */ rc = zpool_prepare_disk(zhp, vdev_nv, prepare_str, lines, lines_cnt); if (rc != 0) return (rc); rc = zpool_label_disk(hdl, zhp, name); return (rc); }