X-Git-Url: https://git.camperquake.de/gitweb.cgi?a=blobdiff_plain;f=lib%2Flibzfs%2Flibzfs_dataset.c;h=661f9b5f97eca7d6a468188c4061f36efcb07527;hb=c6327b63e6d3a11bb333829a8341d572e2fa7d9f;hp=ac912260551dd03ac459e3aea6493b66f5ab0199;hpb=9babb37438b58e77bad04e820d5702e15b79e6a6;p=zfs.git diff --git a/lib/libzfs/libzfs_dataset.c b/lib/libzfs/libzfs_dataset.c index ac91226..661f9b5 100644 --- a/lib/libzfs/libzfs_dataset.c +++ b/lib/libzfs/libzfs_dataset.c @@ -20,14 +20,13 @@ */ /* - * Copyright 2009 Sun Microsystems, Inc. All rights reserved. - * Use is subject to license terms. + * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. + * Copyright (c) 2010 Nexenta Systems, Inc. All rights reserved. + * Copyright (c) 2011 by Delphix. All rights reserved. */ -#include #include #include -#include #include #include #include @@ -39,15 +38,18 @@ #include #include #include -#include #include #include #include #include #include +#ifdef HAVE_IDMAP #include #include +#include +#endif /* HAVE_IDMAP */ +#include #include #include #include @@ -75,66 +77,26 @@ zfs_type_to_name(zfs_type_t type) return (dgettext(TEXT_DOMAIN, "snapshot")); case ZFS_TYPE_VOLUME: return (dgettext(TEXT_DOMAIN, "volume")); + default: + break; } return (NULL); } /* - * Given a path and mask of ZFS types, return a string describing this dataset. - * This is used when we fail to open a dataset and we cannot get an exact type. - * We guess what the type would have been based on the path and the mask of - * acceptable types. - */ -static const char * -path_to_str(const char *path, int types) -{ - /* - * When given a single type, always report the exact type. - */ - if (types == ZFS_TYPE_SNAPSHOT) - return (dgettext(TEXT_DOMAIN, "snapshot")); - if (types == ZFS_TYPE_FILESYSTEM) - return (dgettext(TEXT_DOMAIN, "filesystem")); - if (types == ZFS_TYPE_VOLUME) - return (dgettext(TEXT_DOMAIN, "volume")); - - /* - * The user is requesting more than one type of dataset. If this is the - * case, consult the path itself. If we're looking for a snapshot, and - * a '@' is found, then report it as "snapshot". Otherwise, remove the - * snapshot attribute and try again. - */ - if (types & ZFS_TYPE_SNAPSHOT) { - if (strchr(path, '@') != NULL) - return (dgettext(TEXT_DOMAIN, "snapshot")); - return (path_to_str(path, types & ~ZFS_TYPE_SNAPSHOT)); - } - - /* - * The user has requested either filesystems or volumes. - * We have no way of knowing a priori what type this would be, so always - * report it as "filesystem" or "volume", our two primitive types. - */ - if (types & ZFS_TYPE_FILESYSTEM) - return (dgettext(TEXT_DOMAIN, "filesystem")); - - assert(types & ZFS_TYPE_VOLUME); - return (dgettext(TEXT_DOMAIN, "volume")); -} - -/* * Validate a ZFS path. This is used even before trying to open the dataset, to * provide a more meaningful error message. We call zfs_error_aux() to * explain exactly why the name was not valid. */ -static int +int zfs_validate_name(libzfs_handle_t *hdl, const char *path, int type, boolean_t modifying) { namecheck_err_t why; char what; + (void) zfs_prop_get_table(); if (dataset_namecheck(path, &why, &what) != 0) { if (hdl != NULL) { switch (why) { @@ -183,6 +145,8 @@ zfs_validate_name(libzfs_handle_t *hdl, const char *path, int type, zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "reserved disk name")); break; + default: + break; } } @@ -339,6 +303,44 @@ get_stats_ioctl(zfs_handle_t *zhp, zfs_cmd_t *zc) return (0); } +/* + * Utility function to get the received properties of the given object. + */ +static int +get_recvd_props_ioctl(zfs_handle_t *zhp) +{ + libzfs_handle_t *hdl = zhp->zfs_hdl; + nvlist_t *recvdprops; + zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; + int err; + + if (zcmd_alloc_dst_nvlist(hdl, &zc, 0) != 0) + return (-1); + + (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); + + while (ioctl(hdl->libzfs_fd, ZFS_IOC_OBJSET_RECVD_PROPS, &zc) != 0) { + if (errno == ENOMEM) { + if (zcmd_expand_dst_nvlist(hdl, &zc) != 0) { + return (-1); + } + } else { + zcmd_free_nvlists(&zc); + return (-1); + } + } + + err = zcmd_read_dst_nvlist(zhp->zfs_hdl, &zc, &recvdprops); + zcmd_free_nvlists(&zc); + if (err != 0) + return (-1); + + nvlist_free(zhp->zfs_recvd_props); + zhp->zfs_recvd_props = recvdprops; + + return (0); +} + static int put_stats_zhdl(zfs_handle_t *zhp, zfs_cmd_t *zc) { @@ -372,7 +374,7 @@ static int get_stats(zfs_handle_t *zhp) { int rc = 0; - zfs_cmd_t zc = { 0 }; + zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; if (zcmd_alloc_dst_nvlist(zhp->zfs_hdl, &zc, 0) != 0) return (-1); @@ -400,70 +402,8 @@ zfs_refresh_properties(zfs_handle_t *zhp) static int make_dataset_handle_common(zfs_handle_t *zhp, zfs_cmd_t *zc) { - char *logstr; - libzfs_handle_t *hdl = zhp->zfs_hdl; - - /* - * Preserve history log string. - * any changes performed here will be - * logged as an internal event. - */ - logstr = zhp->zfs_hdl->libzfs_log_str; - zhp->zfs_hdl->libzfs_log_str = NULL; - -top: - if (put_stats_zhdl(zhp, zc) != 0) { - zhp->zfs_hdl->libzfs_log_str = logstr; + if (put_stats_zhdl(zhp, zc) != 0) return (-1); - } - - - if (zhp->zfs_dmustats.dds_inconsistent) { - zfs_cmd_t zc2 = { 0 }; - - /* - * If it is dds_inconsistent, then we've caught it in - * the middle of a 'zfs receive' or 'zfs destroy', and - * it is inconsistent from the ZPL's point of view, so - * can't be mounted. However, it could also be that we - * have crashed in the middle of one of those - * operations, in which case we need to get rid of the - * inconsistent state. We do that by either rolling - * back to the previous snapshot (which will fail if - * there is none), or destroying the filesystem. Note - * that if we are still in the middle of an active - * 'receive' or 'destroy', then the rollback and destroy - * will fail with EBUSY and we will drive on as usual. - */ - - (void) strlcpy(zc2.zc_name, zhp->zfs_name, - sizeof (zc2.zc_name)); - - if (zhp->zfs_dmustats.dds_type == DMU_OST_ZVOL) { - (void) zvol_remove_link(hdl, zhp->zfs_name); - zc2.zc_objset_type = DMU_OST_ZVOL; - } else { - zc2.zc_objset_type = DMU_OST_ZFS; - } - - /* - * If we can successfully destroy it, pretend that it - * never existed. - */ - if (ioctl(hdl->libzfs_fd, ZFS_IOC_DESTROY, &zc2) == 0) { - zhp->zfs_hdl->libzfs_log_str = logstr; - errno = ENOENT; - return (-1); - } - /* If we can successfully roll it back, reset the stats */ - if (ioctl(hdl->libzfs_fd, ZFS_IOC_ROLLBACK, &zc2) == 0) { - if (get_stats_ioctl(zhp, zc) != 0) { - zhp->zfs_hdl->libzfs_log_str = logstr; - return (-1); - } - goto top; - } - } /* * We've managed to open the dataset and gather statistics. Determine @@ -473,6 +413,9 @@ top: zhp->zfs_head_type = ZFS_TYPE_VOLUME; else if (zhp->zfs_dmustats.dds_type == DMU_OST_ZFS) zhp->zfs_head_type = ZFS_TYPE_FILESYSTEM; + else if (zhp->zfs_dmustats.dds_type == DMU_OST_OTHER) + return (-1); /* zpios' and other testing datasets are + of this type, ignore if encountered */ else abort(); @@ -485,15 +428,16 @@ top: else abort(); /* we should never see any other types */ - zhp->zfs_hdl->libzfs_log_str = logstr; - zhp->zpool_hdl = zpool_handle(zhp); + if ((zhp->zpool_hdl = zpool_handle(zhp)) == NULL) + return (-1); + return (0); } zfs_handle_t * make_dataset_handle(libzfs_handle_t *hdl, const char *path) { - zfs_cmd_t zc = { 0 }; + zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; zfs_handle_t *zhp = calloc(sizeof (zfs_handle_t), 1); @@ -588,6 +532,7 @@ zfs_close(zfs_handle_t *zhp) free(zhp->zfs_mntopts); nvlist_free(zhp->zfs_props); nvlist_free(zhp->zfs_user_props); + nvlist_free(zhp->zfs_recvd_props); free(zhp); } @@ -644,7 +589,7 @@ libzfs_mnttab_fini(libzfs_handle_t *hdl) void *cookie = NULL; mnttab_node_t *mtn; - while (mtn = avl_destroy_nodes(&hdl->libzfs_mnttab_cache, &cookie)) { + while ((mtn = avl_destroy_nodes(&hdl->libzfs_mnttab_cache, &cookie))) { free(mtn->mtn_mt.mnt_special); free(mtn->mtn_mt.mnt_mountp); free(mtn->mtn_mt.mnt_fstype); @@ -716,7 +661,7 @@ libzfs_mnttab_remove(libzfs_handle_t *hdl, const char *fsname) mnttab_node_t *ret; find.mtn_mt.mnt_special = (char *)fsname; - if (ret = avl_find(&hdl->libzfs_mnttab_cache, (void *)&find, NULL)) { + if ((ret = avl_find(&hdl->libzfs_mnttab_cache, (void *)&find, NULL))) { avl_remove(&hdl->libzfs_mnttab_cache, ret); free(ret->mtn_mt.mnt_special); free(ret->mtn_mt.mnt_mountp); @@ -881,9 +826,14 @@ zfs_valid_proplist(libzfs_handle_t *hdl, zfs_type_t type, nvlist_t *nvl, goto error; } + /* + * Encode the prop name as + * userquota@-domain, to make it easy + * for the kernel to decode. + */ (void) snprintf(newpropname, sizeof (newpropname), - "%s%s", zfs_userquota_prop_prefixes[uqtype], - domain); + "%s%llx-%s", zfs_userquota_prop_prefixes[uqtype], + (longlong_t)rid, domain); valary[0] = uqtype; valary[1] = rid; valary[2] = intval; @@ -959,19 +909,66 @@ zfs_valid_proplist(libzfs_handle_t *hdl, zfs_type_t type, nvlist_t *nvl, } break; - case ZFS_PROP_SHAREISCSI: - if (strcmp(strval, "off") != 0 && - strcmp(strval, "on") != 0 && - strcmp(strval, "type=disk") != 0) { - zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, - "'%s' must be 'on', 'off', or 'type=disk'"), - propname); - (void) zfs_error(hdl, EZFS_BADPROP, errbuf); - goto error; + case ZFS_PROP_MLSLABEL: + { +#ifdef HAVE_MLSLABEL + /* + * Verify the mlslabel string and convert to + * internal hex label string. + */ + + m_label_t *new_sl; + char *hex = NULL; /* internal label string */ + + /* Default value is already OK. */ + if (strcasecmp(strval, ZFS_MLSLABEL_DEFAULT) == 0) + break; + + /* Verify the label can be converted to binary form */ + if (((new_sl = m_label_alloc(MAC_LABEL)) == NULL) || + (str_to_label(strval, &new_sl, MAC_LABEL, + L_NO_CORRECTION, NULL) == -1)) { + goto badlabel; } + /* Now translate to hex internal label string */ + if (label_to_str(new_sl, &hex, M_INTERNAL, + DEF_NAMES) != 0) { + if (hex) + free(hex); + goto badlabel; + } + m_label_free(new_sl); + + /* If string is already in internal form, we're done. */ + if (strcmp(strval, hex) == 0) { + free(hex); + break; + } + + /* Replace the label string with the internal form. */ + (void) nvlist_remove(ret, zfs_prop_to_name(prop), + DATA_TYPE_STRING); + verify(nvlist_add_string(ret, zfs_prop_to_name(prop), + hex) == 0); + free(hex); + break; +badlabel: + zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, + "invalid mlslabel '%s'"), strval); + (void) zfs_error(hdl, EZFS_BADPROP, errbuf); + m_label_free(new_sl); /* OK if null */ + goto error; +#else + zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, + "mlslabels are unsupported")); + (void) zfs_error(hdl, EZFS_BADPROP, errbuf); + goto error; +#endif /* HAVE_MLSLABEL */ + } + case ZFS_PROP_MOUNTPOINT: { namecheck_err_t why; @@ -994,6 +991,8 @@ zfs_valid_proplist(libzfs_handle_t *hdl, zfs_type_t type, nvlist_t *nvl, "component of '%s' is too long"), propname); break; + default: + break; } (void) zfs_error(hdl, EZFS_BADPROP, errbuf); goto error; @@ -1118,6 +1117,8 @@ zfs_valid_proplist(libzfs_handle_t *hdl, zfs_type_t type, nvlist_t *nvl, case ZFS_PROP_NORMALIZE: chosen_normal = (int)intval; break; + default: + break; } /* @@ -1166,6 +1167,8 @@ zfs_valid_proplist(libzfs_handle_t *hdl, zfs_type_t type, nvlist_t *nvl, goto error; } break; + default: + break; } } } @@ -1190,39 +1193,149 @@ zfs_valid_proplist(libzfs_handle_t *hdl, zfs_type_t type, nvlist_t *nvl, (void) zfs_error(hdl, EZFS_BADPROP, errbuf); goto error; } + return (ret); + +error: + nvlist_free(ret); + return (NULL); +} + +int +zfs_add_synthetic_resv(zfs_handle_t *zhp, nvlist_t *nvl) +{ + uint64_t old_volsize; + uint64_t new_volsize; + uint64_t old_reservation; + uint64_t new_reservation; + zfs_prop_t resv_prop; /* * If this is an existing volume, and someone is setting the volsize, * make sure that it matches the reservation, or add it if necessary. */ - if (zhp != NULL && type == ZFS_TYPE_VOLUME && - nvlist_lookup_uint64(ret, zfs_prop_to_name(ZFS_PROP_VOLSIZE), - &intval) == 0) { - uint64_t old_volsize = zfs_prop_get_int(zhp, - ZFS_PROP_VOLSIZE); - uint64_t old_reservation; - uint64_t new_reservation; - zfs_prop_t resv_prop; + old_volsize = zfs_prop_get_int(zhp, ZFS_PROP_VOLSIZE); + if (zfs_which_resv_prop(zhp, &resv_prop) < 0) + return (-1); + old_reservation = zfs_prop_get_int(zhp, resv_prop); + if ((zvol_volsize_to_reservation(old_volsize, zhp->zfs_props) != + old_reservation) || nvlist_lookup_uint64(nvl, + zfs_prop_to_name(resv_prop), &new_reservation) != ENOENT) { + return (0); + } + if (nvlist_lookup_uint64(nvl, zfs_prop_to_name(ZFS_PROP_VOLSIZE), + &new_volsize) != 0) + return (-1); + new_reservation = zvol_volsize_to_reservation(new_volsize, + zhp->zfs_props); + if (nvlist_add_uint64(nvl, zfs_prop_to_name(resv_prop), + new_reservation) != 0) { + (void) no_memory(zhp->zfs_hdl); + return (-1); + } + return (1); +} - if (zfs_which_resv_prop(zhp, &resv_prop) < 0) - goto error; - old_reservation = zfs_prop_get_int(zhp, resv_prop); +void +zfs_setprop_error(libzfs_handle_t *hdl, zfs_prop_t prop, int err, + char *errbuf) +{ + switch (err) { - if (old_volsize == old_reservation && - nvlist_lookup_uint64(ret, zfs_prop_to_name(resv_prop), - &new_reservation) != 0) { - if (nvlist_add_uint64(ret, - zfs_prop_to_name(resv_prop), intval) != 0) { - (void) no_memory(hdl); - goto error; - } + 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 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) { + (void) zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, + "property setting is not allowed on " + "bootable datasets")); + (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 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; } +#endif + /* FALLTHROUGH */ + default: + (void) zfs_standard_error(hdl, err, errbuf); } - return (ret); +} -error: - nvlist_free(ret); - return (NULL); +static boolean_t +zfs_is_namespace_prop(zfs_prop_t prop) +{ + switch (prop) { + + case ZFS_PROP_ATIME: + case ZFS_PROP_DEVICES: + case ZFS_PROP_EXEC: + case ZFS_PROP_SETUID: + case ZFS_PROP_READONLY: + case ZFS_PROP_XATTR: + case ZFS_PROP_NBMAND: + return (B_TRUE); + + default: + return (B_FALSE); + } } /* @@ -1231,7 +1344,7 @@ error: int zfs_prop_set(zfs_handle_t *zhp, const char *propname, const char *propval) { - zfs_cmd_t zc = { 0 }; + zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; int ret = -1; prop_changelist_t *cl = NULL; char errbuf[1024]; @@ -1240,6 +1353,7 @@ zfs_prop_set(zfs_handle_t *zhp, const char *propname, const char *propval) zfs_prop_t prop; boolean_t do_prefix; uint64_t idx; + int added_resv = 0; (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, "cannot set property for '%s'"), @@ -1260,6 +1374,11 @@ zfs_prop_set(zfs_handle_t *zhp, const char *propname, const char *propval) prop = zfs_name_to_prop(propname); + if (prop == ZFS_PROP_VOLSIZE) { + if ((added_resv = zfs_add_synthetic_resv(zhp, nvl)) == -1) + goto error; + } + if ((cl = changelist_gather(zhp, prop, 0, 0)) == NULL) goto error; @@ -1293,89 +1412,43 @@ zfs_prop_set(zfs_handle_t *zhp, const char *propname, const char *propval) ret = zfs_ioctl(hdl, ZFS_IOC_SET_PROP, &zc); if (ret != 0) { - switch (errno) { + zfs_setprop_error(hdl, prop, errno, errbuf); + if (added_resv && errno == ENOSPC) { + /* clean up the volsize property we tried to set */ + uint64_t old_volsize = zfs_prop_get_int(zhp, + ZFS_PROP_VOLSIZE); + nvlist_free(nvl); + zcmd_free_nvlists(&zc); + if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0) + goto error; + if (nvlist_add_uint64(nvl, + zfs_prop_to_name(ZFS_PROP_VOLSIZE), + old_volsize) != 0) + goto error; + if (zcmd_write_src_nvlist(hdl, &zc, nvl) != 0) + goto error; + (void) zfs_ioctl(hdl, ZFS_IOC_SET_PROP, &zc); + } + } else { + if (do_prefix) + ret = changelist_postfix(cl); - case ENOSPC: + if (ret == 0) { /* - * For quotas and reservations, ENOSPC indicates - * something different; setting a quota or reservation - * doesn't use any disk space. + * Refresh the statistics so the new property + * value is reflected. */ - 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, errno, errbuf); - break; - } - break; - - case EBUSY: - if (prop == ZFS_PROP_VOLBLOCKSIZE) - (void) zfs_error(hdl, EZFS_VOLHASDATA, errbuf); - else - (void) zfs_standard_error(hdl, EBUSY, errbuf); - break; - - case EROFS: - (void) zfs_error(hdl, EZFS_DSREADONLY, 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) { - (void) zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, - "property setting is not allowed on " - "bootable datasets")); - (void) zfs_error(hdl, EZFS_NOTSUP, errbuf); - } else { - (void) zfs_standard_error(hdl, errno, errbuf); - } - break; + (void) get_stats(zhp); - case EOVERFLOW: /* - * This platform can't address a volume this big. + * Remount the filesystem to propagate the change + * if one of the options handled by the generic + * Linux namespace layer has been modified. */ -#ifdef _ILP32 - if (prop == ZFS_PROP_VOLSIZE) { - (void) zfs_error(hdl, EZFS_VOLTOOBIG, errbuf); - break; - } -#endif - /* FALLTHROUGH */ - default: - (void) zfs_standard_error(hdl, errno, errbuf); + if (zfs_is_namespace_prop(prop) && + zfs_is_mounted(zhp, NULL)) + ret = zfs_mount(zhp, MNTOPT_REMOUNT, 0); } - } else { - if (do_prefix) - ret = changelist_postfix(cl); - - /* - * Refresh the statistics so the new property value - * is reflected. - */ - if (ret == 0) - (void) get_stats(zhp); } error: @@ -1387,12 +1460,13 @@ error: } /* - * Given a property, inherit the value from the parent dataset. + * Given a property, inherit the value from the parent dataset, or if received + * is TRUE, revert to the received value, if any. */ int -zfs_prop_inherit(zfs_handle_t *zhp, const char *propname) +zfs_prop_inherit(zfs_handle_t *zhp, const char *propname, boolean_t received) { - zfs_cmd_t zc = { 0 }; + zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; int ret; prop_changelist_t *cl; libzfs_handle_t *hdl = zhp->zfs_hdl; @@ -1402,6 +1476,7 @@ zfs_prop_inherit(zfs_handle_t *zhp, const char *propname) (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, "cannot inherit %s for '%s'"), propname, zhp->zfs_name); + zc.zc_cookie = received; if ((prop = zfs_name_to_prop(propname)) == ZPROP_INVAL) { /* * For user properties, the amount of work we have to do is very @@ -1428,7 +1503,7 @@ zfs_prop_inherit(zfs_handle_t *zhp, const char *propname) if (zfs_prop_readonly(prop)) return (zfs_error(hdl, EZFS_PROPREADONLY, errbuf)); - if (!zfs_prop_inheritable(prop)) + if (!zfs_prop_inheritable(prop) && !received) return (zfs_error(hdl, EZFS_PROPNONINHERIT, errbuf)); /* @@ -1438,7 +1513,7 @@ zfs_prop_inherit(zfs_handle_t *zhp, const char *propname) return (zfs_error(hdl, EZFS_PROPTYPE, errbuf)); /* - * Normalize the name, to get rid of shorthand abbrevations. + * Normalize the name, to get rid of shorthand abbreviations. */ propname = zfs_prop_to_name(prop); (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); @@ -1490,7 +1565,7 @@ error: * True DSL properties are stored in an nvlist. The following two functions * extract them appropriately. */ -static uint64_t +uint64_t getprop_uint64(zfs_handle_t *zhp, zfs_prop_t prop, char **source) { nvlist_t *nv; @@ -1533,12 +1608,32 @@ getprop_string(zfs_handle_t *zhp, zfs_prop_t prop, char **source) return (value); } +static boolean_t +zfs_is_recvd_props_mode(zfs_handle_t *zhp) +{ + return (zhp->zfs_props == zhp->zfs_recvd_props); +} + +static void +zfs_set_recvd_props_mode(zfs_handle_t *zhp, uint64_t *cookie) +{ + *cookie = (uint64_t)(uintptr_t)zhp->zfs_props; + zhp->zfs_props = zhp->zfs_recvd_props; +} + +static void +zfs_unset_recvd_props_mode(zfs_handle_t *zhp, uint64_t *cookie) +{ + zhp->zfs_props = (nvlist_t *)(uintptr_t)*cookie; + *cookie = 0; +} + /* * Internal function for getting a numeric property. Both zfs_prop_get() and * zfs_prop_get_int() are built using this interface. * * Certain properties can be overridden using 'mount -o'. In this case, scan - * the contents of the /etc/mnttab entry, searching for the appropriate options. + * the contents of the /etc/mtab entry, searching for the appropriate options. * If they differ from the on-disk values, report the current values and mark * the source "temporary". */ @@ -1546,11 +1641,12 @@ static int get_numeric_property(zfs_handle_t *zhp, zfs_prop_t prop, zprop_source_t *src, char **source, uint64_t *val) { - zfs_cmd_t zc = { 0 }; + zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; nvlist_t *zplprops = NULL; struct mnttab mnt; char *mntopt_on = NULL; char *mntopt_off = NULL; + boolean_t received = zfs_is_recvd_props_mode(zhp); *source = NULL; @@ -1589,11 +1685,13 @@ get_numeric_property(zfs_handle_t *zhp, zfs_prop_t prop, zprop_source_t *src, mntopt_on = MNTOPT_NBMAND; mntopt_off = MNTOPT_NONBMAND; break; + default: + break; } /* * Because looking up the mount options is potentially expensive - * (iterating over all of /etc/mnttab), we defer its calculation until + * (iterating over all of /etc/mtab), we defer its calculation until * we're looking up a property which requires its presence. */ if (!zhp->zfs_mntcheck && @@ -1626,6 +1724,9 @@ get_numeric_property(zfs_handle_t *zhp, zfs_prop_t prop, zprop_source_t *src, case ZFS_PROP_NBMAND: *val = getprop_uint64(zhp, prop, source); + if (received) + break; + if (hasmntopt(&mnt, mntopt_on) && !*val) { *val = B_TRUE; if (src) @@ -1638,22 +1739,17 @@ get_numeric_property(zfs_handle_t *zhp, zfs_prop_t prop, zprop_source_t *src, break; case ZFS_PROP_CANMOUNT: - *val = getprop_uint64(zhp, prop, source); - if (*val != ZFS_CANMOUNT_ON) - *source = zhp->zfs_name; - else - *source = ""; /* default */ - break; - + case ZFS_PROP_VOLSIZE: case ZFS_PROP_QUOTA: case ZFS_PROP_REFQUOTA: case ZFS_PROP_RESERVATION: case ZFS_PROP_REFRESERVATION: *val = getprop_uint64(zhp, prop, source); - if (*val == 0) - *source = ""; /* default */ - else + + if (*source == NULL) { + /* not default, must be local */ *source = zhp->zfs_name; + } break; case ZFS_PROP_MOUNTED: @@ -1674,21 +1770,13 @@ get_numeric_property(zfs_handle_t *zhp, zfs_prop_t prop, zprop_source_t *src, (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_OBJSET_ZPLPROPS, &zc)) { zcmd_free_nvlists(&zc); - zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, - "unable to get %s property"), - zfs_prop_to_name(prop)); - return (zfs_error(zhp->zfs_hdl, EZFS_BADVERSION, - dgettext(TEXT_DOMAIN, "internal error"))); + return (-1); } if (zcmd_read_dst_nvlist(zhp->zfs_hdl, &zc, &zplprops) != 0 || nvlist_lookup_uint64(zplprops, zfs_prop_to_name(prop), val) != 0) { zcmd_free_nvlists(&zc); - zfs_error_aux(zhp->zfs_hdl, dgettext(TEXT_DOMAIN, - "unable to get %s property"), - zfs_prop_to_name(prop)); - return (zfs_error(zhp->zfs_hdl, EZFS_NOMEM, - dgettext(TEXT_DOMAIN, "internal error"))); + return (-1); } if (zplprops) nvlist_free(zplprops); @@ -1703,11 +1791,11 @@ get_numeric_property(zfs_handle_t *zhp, zfs_prop_t prop, zprop_source_t *src, /* * If we tried to use a default value for a * readonly property, it means that it was not - * present; return an error. + * present. */ if (zfs_prop_readonly(prop) && - *source && (*source)[0] == '\0') { - return (-1); + *source != NULL && (*source)[0] == '\0') { + *source = NULL; } break; @@ -1737,6 +1825,8 @@ get_source(zfs_handle_t *zhp, zprop_source_t *srctype, char *source, *srctype = ZPROP_SRC_NONE; } else if (source[0] == '\0') { *srctype = ZPROP_SRC_DEFAULT; + } else if (strstr(source, ZPROP_SOURCE_VAL_RECVD) != NULL) { + *srctype = ZPROP_SRC_RECEIVED; } else { if (strcmp(source, zhp->zfs_name) == 0) { *srctype = ZPROP_SRC_LOCAL; @@ -1748,6 +1838,43 @@ get_source(zfs_handle_t *zhp, zprop_source_t *srctype, char *source, } +int +zfs_prop_get_recvd(zfs_handle_t *zhp, const char *propname, char *propbuf, + size_t proplen, boolean_t literal) +{ + zfs_prop_t prop; + int err = 0; + + if (zhp->zfs_recvd_props == NULL) + if (get_recvd_props_ioctl(zhp) != 0) + return (-1); + + prop = zfs_name_to_prop(propname); + + if (prop != ZPROP_INVAL) { + uint64_t cookie; + if (!nvlist_exists(zhp->zfs_recvd_props, propname)) + return (-1); + zfs_set_recvd_props_mode(zhp, &cookie); + err = zfs_prop_get(zhp, prop, propbuf, proplen, + NULL, NULL, 0, literal); + zfs_unset_recvd_props_mode(zhp, &cookie); + } else if (zfs_prop_userquota(propname)) { + return (-1); + } else { + nvlist_t *propval; + char *recvdval; + if (nvlist_lookup_nvlist(zhp->zfs_recvd_props, + propname, &propval) != 0) + return (-1); + verify(nvlist_lookup_string(propval, ZPROP_VALUE, + &recvdval) == 0); + (void) strlcpy(propbuf, recvdval, proplen); + } + + return (err == 0 ? 0 : -1); +} + /* * Retrieve a property from the given object. If 'literal' is specified, then * numbers are left as exact values. Otherwise, numbers are converted to a @@ -1763,6 +1890,7 @@ zfs_prop_get(zfs_handle_t *zhp, zfs_prop_t prop, char *propbuf, size_t proplen, uint64_t val; char *str; const char *strval; + boolean_t received = zfs_is_recvd_props_mode(zhp); /* * Check to see if this property applies to our object @@ -1770,6 +1898,9 @@ zfs_prop_get(zfs_handle_t *zhp, zfs_prop_t prop, char *propbuf, size_t proplen, if (!zfs_prop_valid_for_type(prop, zhp->zfs_type)) return (-1); + if (received && zfs_prop_readonly(prop)) + return (-1); + if (src) *src = ZPROP_SRC_NONE; @@ -1788,7 +1919,7 @@ zfs_prop_get(zfs_handle_t *zhp, zfs_prop_t prop, char *propbuf, size_t proplen, localtime_r(&time, &t) == NULL || strftime(propbuf, proplen, "%a %b %e %k:%M %Y", &t) == 0) - (void) snprintf(propbuf, proplen, "%llu", val); + (void) snprintf(propbuf, proplen, "%llu", (u_longlong_t) val); } break; @@ -1809,10 +1940,22 @@ zfs_prop_get(zfs_handle_t *zhp, zfs_prop_t prop, char *propbuf, size_t proplen, if (str[0] == '/') { char buf[MAXPATHLEN]; char *root = buf; - const char *relpath = zhp->zfs_name + strlen(source); + const char *relpath; - if (relpath[0] == '/') - relpath++; + /* + * If we inherit the mountpoint, even from a dataset + * with a received value, the source will be the path of + * the dataset we inherit from. If source is + * ZPROP_SOURCE_VAL_RECVD, the received value is not + * inherited. + */ + if (strcmp(source, ZPROP_SOURCE_VAL_RECVD) == 0) { + relpath = ""; + } else { + relpath = zhp->zfs_name + strlen(source); + if (relpath[0] == '/') + relpath++; + } if ((zpool_get_prop(zhp->zpool_hdl, ZPOOL_PROP_ALTROOT, buf, MAXPATHLEN, NULL)) || @@ -1888,11 +2031,13 @@ zfs_prop_get(zfs_handle_t *zhp, zfs_prop_t prop, char *propbuf, size_t proplen, } break; + case ZFS_PROP_REFRATIO: case ZFS_PROP_COMPRESSRATIO: if (get_numeric_property(zhp, prop, src, &source, &val) != 0) return (-1); - (void) snprintf(propbuf, proplen, "%lld.%02lldx", (longlong_t) - val / 100, (longlong_t)val % 100); + (void) snprintf(propbuf, proplen, "%llu.%02llux", + (u_longlong_t)(val / 100), + (u_longlong_t)(val % 100)); break; case ZFS_PROP_TYPE: @@ -1937,6 +2082,49 @@ zfs_prop_get(zfs_handle_t *zhp, zfs_prop_t prop, char *propbuf, size_t proplen, (void) strlcpy(propbuf, zhp->zfs_name, proplen); break; + case ZFS_PROP_MLSLABEL: + { +#ifdef HAVE_MLSLABEL + m_label_t *new_sl = NULL; + char *ascii = NULL; /* human readable label */ + + (void) strlcpy(propbuf, + getprop_string(zhp, prop, &source), proplen); + + if (literal || (strcasecmp(propbuf, + ZFS_MLSLABEL_DEFAULT) == 0)) + break; + + /* + * Try to translate the internal hex string to + * human-readable output. If there are any + * problems just use the hex string. + */ + + if (str_to_label(propbuf, &new_sl, MAC_LABEL, + L_NO_CORRECTION, NULL) == -1) { + m_label_free(new_sl); + break; + } + + if (label_to_str(new_sl, &ascii, M_LABEL, + DEF_NAMES) != 0) { + if (ascii) + free(ascii); + m_label_free(new_sl); + break; + } + m_label_free(new_sl); + + (void) strlcpy(propbuf, ascii, proplen); + free(ascii); +#else + (void) strlcpy(propbuf, + getprop_string(zhp, prop, &source), proplen); +#endif /* HAVE_MLSLABEL */ + } + break; + default: switch (zfs_prop_get_type(prop)) { case PROP_TYPE_NUMBER: @@ -2028,18 +2216,16 @@ zfs_prop_get_numeric(zfs_handle_t *zhp, zfs_prop_t prop, uint64_t *value, return (0); } +#ifdef HAVE_IDMAP static int idmap_id_to_numeric_domain_rid(uid_t id, boolean_t isuser, char **domainp, idmap_rid_t *ridp) { - idmap_handle_t *idmap_hdl = NULL; idmap_get_handle_t *get_hdl = NULL; idmap_stat status; int err = EINVAL; - if (idmap_init(&idmap_hdl) != IDMAP_SUCCESS) - goto out; - if (idmap_get_create(idmap_hdl, &get_hdl) != IDMAP_SUCCESS) + if (idmap_get_create(&get_hdl) != IDMAP_SUCCESS) goto out; if (isuser) { @@ -2058,23 +2244,27 @@ idmap_id_to_numeric_domain_rid(uid_t id, boolean_t isuser, out: if (get_hdl) idmap_get_destroy(get_hdl); - if (idmap_hdl) - (void) idmap_fini(idmap_hdl); return (err); } +#endif /* HAVE_IDMAP */ /* * convert the propname into parameters needed by kernel * Eg: userquota@ahrens -> ZFS_PROP_USERQUOTA, "", 126829 * Eg: userused@matt@domain -> ZFS_PROP_USERUSED, "S-1-123-456", 789 + * Eg: groupquota@staff -> ZFS_PROP_GROUPQUOTA, "", 1234 + * Eg: groupused@staff -> ZFS_PROP_GROUPUSED, "", 1234 */ static int userquota_propname_decode(const char *propname, boolean_t zoned, zfs_userquota_prop_t *typep, char *domain, int domainlen, uint64_t *ridp) { zfs_userquota_prop_t type; - char *cp, *end; + char *cp; boolean_t isuser; + boolean_t isgroup; + struct passwd *pw; + struct group *gr; domain[0] = '\0'; @@ -2088,69 +2278,68 @@ userquota_propname_decode(const char *propname, boolean_t zoned, return (EINVAL); *typep = type; - isuser = (type == ZFS_PROP_USERQUOTA || - type == ZFS_PROP_USERUSED); + isuser = (type == ZFS_PROP_USERQUOTA || type == ZFS_PROP_USERUSED); + isgroup = (type == ZFS_PROP_GROUPQUOTA || type == ZFS_PROP_GROUPUSED); cp = strchr(propname, '@') + 1; - if (strchr(cp, '@')) { + if (isuser && (pw = getpwnam(cp)) != NULL) { + if (zoned && getzoneid() == GLOBAL_ZONEID) + return (ENOENT); + *ridp = pw->pw_uid; + } else if (isgroup && (gr = getgrnam(cp)) != NULL) { + if (zoned && getzoneid() == GLOBAL_ZONEID) + return (ENOENT); + *ridp = gr->gr_gid; + } else if (strchr(cp, '@')) { +#ifdef HAVE_IDMAP /* * It's a SID name (eg "user@domain") that needs to be - * turned into S-1-domainID-RID. There should be a - * better way to do this, but for now just translate it - * to the (possibly ephemeral) uid and then back to the - * SID. This is like getsidname(noresolve=TRUE). + * turned into S-1-domainID-RID. */ - uid_t id; - idmap_rid_t rid; - char *mapdomain; + directory_error_t e; + char *numericsid = NULL; + char *end; if (zoned && getzoneid() == GLOBAL_ZONEID) return (ENOENT); - if (sid_to_id(cp, isuser, &id) != 0) + if (isuser) { + e = directory_sid_from_user_name(NULL, + cp, &numericsid); + } else { + e = directory_sid_from_group_name(NULL, + cp, &numericsid); + } + if (e != NULL) { + directory_error_free(e); return (ENOENT); - if (idmap_id_to_numeric_domain_rid(id, isuser, - &mapdomain, &rid) != 0) + } + if (numericsid == NULL) return (ENOENT); - (void) strlcpy(domain, mapdomain, domainlen); - *ridp = rid; - } else if (strncmp(cp, "S-1-", 4) == 0) { - /* It's a numeric SID (eg "S-1-234-567-89") */ - (void) strcpy(domain, cp); + cp = numericsid; + (void) strlcpy(domain, cp, domainlen); cp = strrchr(domain, '-'); *cp = '\0'; cp++; errno = 0; *ridp = strtoull(cp, &end, 10); + free(numericsid); + if (errno != 0 || *end != '\0') return (EINVAL); - } else if (!isdigit(*cp)) { - /* - * It's a user/group name (eg "user") that needs to be - * turned into a uid/gid - */ - if (zoned && getzoneid() == GLOBAL_ZONEID) - return (ENOENT); - if (isuser) { - struct passwd *pw; - pw = getpwnam(cp); - if (pw == NULL) - return (ENOENT); - *ridp = pw->pw_uid; - } else { - struct group *gr; - gr = getgrnam(cp); - if (gr == NULL) - return (ENOENT); - *ridp = gr->gr_gid; - } +#else + return (ENOSYS); +#endif /* HAVE_IDMAP */ } else { +#ifdef HAVE_IDMAP /* It's a user/group ID (eg "12345"). */ - uid_t id = strtoul(cp, &end, 10); + uid_t id; idmap_rid_t rid; char *mapdomain; + char *end; + id = strtoul(cp, &end, 10); if (*end != '\0') return (EINVAL); if (id > MAXUID) { @@ -2158,11 +2347,14 @@ userquota_propname_decode(const char *propname, boolean_t zoned, if (idmap_id_to_numeric_domain_rid(id, isuser, &mapdomain, &rid) != 0) return (ENOENT); - (void) strcpy(domain, mapdomain); + (void) strlcpy(domain, mapdomain, domainlen); *ridp = rid; } else { *ridp = id; } +#else + return (ENOSYS); +#endif /* HAVE_IDMAP */ } return (0); @@ -2173,7 +2365,7 @@ zfs_prop_get_userquota_common(zfs_handle_t *zhp, const char *propname, uint64_t *propvalue, zfs_userquota_prop_t *typep) { int err; - zfs_cmd_t zc = { 0 }; + zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; (void) strncpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); @@ -2217,7 +2409,8 @@ zfs_prop_get_userquota(zfs_handle_t *zhp, const char *propname, return (err); if (literal) { - (void) snprintf(propbuf, proplen, "%llu", propvalue); + (void) snprintf(propbuf, proplen, "%llu", + (u_longlong_t)propvalue); } else if (propvalue == 0 && (type == ZFS_PROP_USERQUOTA || type == ZFS_PROP_GROUPQUOTA)) { (void) strlcpy(propbuf, "none", proplen); @@ -2291,7 +2484,7 @@ top: int zfs_iter_filesystems(zfs_handle_t *zhp, zfs_iter_f func, void *data) { - zfs_cmd_t zc = { 0 }; + zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; zfs_handle_t *nzhp; int ret; @@ -2327,7 +2520,7 @@ zfs_iter_filesystems(zfs_handle_t *zhp, zfs_iter_f func, void *data) int zfs_iter_snapshots(zfs_handle_t *zhp, zfs_iter_f func, void *data) { - zfs_cmd_t zc = { 0 }; + zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; zfs_handle_t *nzhp; int ret; @@ -2368,6 +2561,27 @@ zfs_iter_children(zfs_handle_t *zhp, zfs_iter_f func, void *data) } /* + * Is one dataset name a child dataset of another? + * + * Needs to handle these cases: + * Dataset 1 "a/foo" "a/foo" "a/foo" "a/foo" + * Dataset 2 "a/fo" "a/foobar" "a/bar/baz" "a/foo/bar" + * Descendant? No. No. No. Yes. + */ +static boolean_t +is_descendant(const char *ds1, const char *ds2) +{ + size_t d1len = strlen(ds1); + + /* ds2 can't be a descendant if it's smaller */ + if (strlen(ds2) < d1len) + return (B_FALSE); + + /* otherwise, compare strings and verify that there's a '/' char */ + return (ds2[d1len] == '/' && (strncmp(ds1, ds2, d1len) == 0)); +} + +/* * Given a complete name, return just the portion that refers to the parent. * Can return NULL if this is a pool. */ @@ -2397,11 +2611,12 @@ static int check_parents(libzfs_handle_t *hdl, const char *path, uint64_t *zoned, boolean_t accept_ancestor, int *prefixlen) { - zfs_cmd_t zc = { 0 }; + zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; char parent[ZFS_MAXNAMELEN]; char *slash; zfs_handle_t *zhp; char errbuf[1024]; + uint64_t is_zoned; (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, "cannot create '%s'"), path); @@ -2444,9 +2659,12 @@ check_parents(libzfs_handle_t *hdl, const char *path, uint64_t *zoned, return (zfs_standard_error(hdl, errno, errbuf)); } - *zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED); + is_zoned = zfs_prop_get_int(zhp, ZFS_PROP_ZONED); + if (zoned != NULL) + *zoned = is_zoned; + /* we are in a non-global zone, but parent is in the global zone */ - if (getzoneid() != GLOBAL_ZONEID && !(*zoned)) { + if (getzoneid() != GLOBAL_ZONEID && !is_zoned) { (void) zfs_standard_error(hdl, EPERM, errbuf); zfs_close(zhp); return (-1); @@ -2522,7 +2740,7 @@ create_parents(libzfs_handle_t *hdl, char *target, int prefixlen) * up to the prefixlen-long one. */ for (cp = target + prefixlen + 1; - cp = strchr(cp, '/'); *cp = '/', cp++) { + (cp = strchr(cp, '/')); *cp = '/', cp++) { char *logstr; *cp = '\0'; @@ -2578,11 +2796,10 @@ int zfs_create_ancestors(libzfs_handle_t *hdl, const char *path) { int prefix; - uint64_t zoned; char *path_copy; - int rc; + int rc = 0; - if (check_parents(hdl, path, &zoned, B_TRUE, &prefix) != 0) + if (check_parents(hdl, path, NULL, B_TRUE, &prefix) != 0) return (-1); if ((path_copy = strdup(path)) != NULL) { @@ -2602,7 +2819,7 @@ int zfs_create(libzfs_handle_t *hdl, const char *path, zfs_type_t type, nvlist_t *props) { - zfs_cmd_t zc = { 0 }; + zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; int ret; uint64_t size = 0; uint64_t blocksize = zfs_prop_default_numeric(ZFS_PROP_VOLBLOCKSIZE); @@ -2763,22 +2980,13 @@ zfs_create(libzfs_handle_t *hdl, const char *path, zfs_type_t type, * isn't mounted, and that there are no active dependents. */ int -zfs_destroy(zfs_handle_t *zhp) +zfs_destroy(zfs_handle_t *zhp, boolean_t defer) { - zfs_cmd_t zc = { 0 }; + zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); if (ZFS_IS_VOLUME(zhp)) { - /* - * If user doesn't have permissions to unshare volume, then - * abort the request. This would only happen for a - * non-privileged user. - */ - if (zfs_unshare_iscsi(zhp) != 0) { - return (-1); - } - if (zvol_remove_link(zhp->zfs_hdl, zhp->zfs_name) != 0) return (-1); @@ -2787,6 +2995,7 @@ zfs_destroy(zfs_handle_t *zhp) zc.zc_objset_type = DMU_OST_ZFS; } + zc.zc_defer_destroy = defer; if (zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_DESTROY, &zc) != 0) { return (zfs_standard_error_fmt(zhp->zfs_hdl, errno, dgettext(TEXT_DOMAIN, "cannot destroy '%s'"), @@ -2805,13 +3014,13 @@ struct destroydata { }; static int -zfs_remove_link_cb(zfs_handle_t *zhp, void *arg) +zfs_check_snap_cb(zfs_handle_t *zhp, void *arg) { struct destroydata *dd = arg; zfs_handle_t *szhp; char name[ZFS_MAXNAMELEN]; boolean_t closezhp = dd->closezhp; - int rv; + int rv = 0; (void) strlcpy(name, zhp->zfs_name, sizeof (name)); (void) strlcat(name, "@", sizeof (name)); @@ -2833,7 +3042,7 @@ zfs_remove_link_cb(zfs_handle_t *zhp, void *arg) } dd->closezhp = B_TRUE; - rv = zfs_iter_filesystems(zhp, zfs_remove_link_cb, arg); + rv = zfs_iter_filesystems(zhp, zfs_check_snap_cb, arg); if (closezhp) zfs_close(zhp); return (rv); @@ -2843,14 +3052,14 @@ zfs_remove_link_cb(zfs_handle_t *zhp, void *arg) * Destroys all snapshots with the given name in zhp & descendants. */ int -zfs_destroy_snaps(zfs_handle_t *zhp, char *snapname) +zfs_destroy_snaps(zfs_handle_t *zhp, char *snapname, boolean_t defer) { - zfs_cmd_t zc = { 0 }; + zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; int ret; struct destroydata dd = { 0 }; dd.snapname = snapname; - (void) zfs_remove_link_cb(zhp, &dd); + (void) zfs_check_snap_cb(zhp, &dd); if (!dd.gotone) { return (zfs_standard_error_fmt(zhp->zfs_hdl, ENOENT, @@ -2860,6 +3069,7 @@ zfs_destroy_snaps(zfs_handle_t *zhp, char *snapname) (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); (void) strlcpy(zc.zc_value, snapname, sizeof (zc.zc_value)); + zc.zc_defer_destroy = defer; ret = zfs_ioctl(zhp->zfs_hdl, ZFS_IOC_DESTROY_SNAPS, &zc); if (ret != 0) { @@ -2889,7 +3099,7 @@ zfs_destroy_snaps(zfs_handle_t *zhp, char *snapname) int zfs_clone(zfs_handle_t *zhp, const char *target, nvlist_t *props) { - zfs_cmd_t zc = { 0 }; + zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; char parent[ZFS_MAXNAMELEN]; int ret; char errbuf[1024]; @@ -3038,7 +3248,7 @@ int zfs_promote(zfs_handle_t *zhp) { libzfs_handle_t *hdl = zhp->zfs_hdl; - zfs_cmd_t zc = { 0 }; + zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; char parent[MAXPATHLEN]; char *cp; int ret; @@ -3103,8 +3313,8 @@ zfs_promote(zfs_handle_t *zhp) * have renamed something in the mean time. */ zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, - "conflicting snapshot name from parent '%s'"), - parent); + "conflicting snapshot '%s' from parent '%s'"), + zc.zc_string, parent); return (zfs_error(hdl, EZFS_EXISTS, errbuf)); default: @@ -3161,7 +3371,7 @@ zfs_snapshot(libzfs_handle_t *hdl, const char *path, boolean_t recursive, const char *delim; char parent[ZFS_MAXNAMELEN]; zfs_handle_t *zhp; - zfs_cmd_t zc = { 0 }; + zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; int ret; char errbuf[1024]; @@ -3275,7 +3485,7 @@ rollback_destroy(zfs_handle_t *zhp, void *data) logstr = zhp->zfs_hdl->libzfs_log_str; zhp->zfs_hdl->libzfs_log_str = NULL; - cbp->cb_error |= zfs_destroy(zhp); + cbp->cb_error |= zfs_destroy(zhp, B_FALSE); zhp->zfs_hdl->libzfs_log_str = logstr; } } else { @@ -3289,7 +3499,7 @@ rollback_destroy(zfs_handle_t *zhp, void *data) zfs_close(zhp); return (0); } - if (zfs_destroy(zhp) != 0) + if (zfs_destroy(zhp, B_FALSE) != 0) cbp->cb_error = B_TRUE; else changelist_remove(clp, zhp->zfs_name); @@ -3313,10 +3523,10 @@ zfs_rollback(zfs_handle_t *zhp, zfs_handle_t *snap, boolean_t force) { rollback_data_t cb = { 0 }; int err; - zfs_cmd_t zc = { 0 }; + zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; boolean_t restore_resv = 0; - uint64_t old_volsize, new_volsize; - zfs_prop_t resv_prop; + uint64_t old_volsize = 0, new_volsize; + zfs_prop_t resv_prop = { 0 }; assert(zhp->zfs_type == ZFS_TYPE_FILESYSTEM || zhp->zfs_type == ZFS_TYPE_VOLUME); @@ -3377,7 +3587,7 @@ zfs_rollback(zfs_handle_t *zhp, zfs_handle_t *snap, boolean_t force) */ if ((zhp->zfs_type == ZFS_TYPE_VOLUME) && (zhp = make_dataset_handle(zhp->zfs_hdl, zhp->zfs_name))) { - if (err = zvol_create_link(zhp->zfs_hdl, zhp->zfs_name)) { + if ((err = zvol_create_link(zhp->zfs_hdl, zhp->zfs_name))) { zfs_close(zhp); return (err); } @@ -3435,7 +3645,7 @@ int zfs_rename(zfs_handle_t *zhp, const char *target, boolean_t recursive) { int ret; - zfs_cmd_t zc = { 0 }; + zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; char *delim; prop_changelist_t *cl = NULL; zfs_handle_t *zhrp = NULL; @@ -3495,14 +3705,11 @@ zfs_rename(zfs_handle_t *zhp, const char *target, boolean_t recursive) if (!zfs_validate_name(hdl, target, zhp->zfs_type, B_TRUE)) return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); - uint64_t unused; /* validate parents */ - if (check_parents(hdl, target, &unused, B_FALSE, NULL) != 0) + if (check_parents(hdl, target, NULL, B_FALSE, NULL) != 0) return (-1); - (void) parent_name(target, parent, sizeof (parent)); - /* make sure we're in the same pool */ verify((delim = strchr(target, '/')) != NULL); if (strncmp(zhp->zfs_name, target, delim - target) != 0 || @@ -3513,10 +3720,9 @@ zfs_rename(zfs_handle_t *zhp, const char *target, boolean_t recursive) } /* new name cannot be a child of the current dataset name */ - if (strncmp(parent, zhp->zfs_name, - strlen(zhp->zfs_name)) == 0) { + if (is_descendant(zhp->zfs_name, target)) { zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, - "New dataset name cannot be a descendent of " + "New dataset name cannot be a descendant of " "current dataset name")); return (zfs_error(hdl, EZFS_INVALIDNAME, errbuf)); } @@ -3553,7 +3759,7 @@ zfs_rename(zfs_handle_t *zhp, const char *target, boolean_t recursive) dd.closezhp = B_TRUE; /* We remove any zvol links prior to renaming them */ - ret = zfs_iter_filesystems(zhrp, zfs_remove_link_cb, &dd); + ret = zfs_iter_filesystems(zhrp, zfs_check_snap_cb, &dd); if (ret) { goto error; } @@ -3566,6 +3772,7 @@ zfs_rename(zfs_handle_t *zhp, const char *target, boolean_t recursive) "child dataset with inherited mountpoint is used " "in a non-global zone")); (void) zfs_error(hdl, EZFS_ZONED, errbuf); + ret = -1; goto error; } @@ -3645,7 +3852,7 @@ error: /* * Given a zvol dataset, issue the ioctl to create the appropriate minor node, - * poke devfsadm to create the /dev link, and then wait for the link to appear. + * and wait briefly for udev to create the /dev link. */ int zvol_create_link(libzfs_handle_t *hdl, const char *dataset) @@ -3656,10 +3863,9 @@ zvol_create_link(libzfs_handle_t *hdl, const char *dataset) static int zvol_create_link_common(libzfs_handle_t *hdl, const char *dataset, int ifexists) { - zfs_cmd_t zc = { 0 }; - di_devlink_handle_t dhdl; - priv_set_t *priv_effective; - int privileged; + zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; + char path[MAXPATHLEN]; + int error; (void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name)); @@ -3696,52 +3902,13 @@ zvol_create_link_common(libzfs_handle_t *hdl, const char *dataset, int ifexists) } /* - * If privileged call devfsadm and wait for the links to - * magically appear. - * Otherwise, print out an informational message. + * Wait up to 10 seconds for udev to create the device. */ - - priv_effective = priv_allocset(); - (void) getppriv(PRIV_EFFECTIVE, priv_effective); - privileged = (priv_isfullset(priv_effective) == B_TRUE); - priv_freeset(priv_effective); - - if (privileged) { - if ((dhdl = di_devlink_init(ZFS_DRIVER, - DI_MAKE_LINK)) == NULL) { - zfs_error_aux(hdl, strerror(errno)); - (void) zfs_error_fmt(hdl, errno, - dgettext(TEXT_DOMAIN, "cannot create device links " - "for '%s'"), dataset); - (void) ioctl(hdl->libzfs_fd, ZFS_IOC_REMOVE_MINOR, &zc); - return (-1); - } else { - (void) di_devlink_fini(&dhdl); - } - } else { - char pathname[MAXPATHLEN]; - struct stat64 statbuf; - int i; - -#define MAX_WAIT 10 - - /* - * This is the poor mans way of waiting for the link - * to show up. If after 10 seconds we still don't - * have it, then print out a message. - */ - (void) snprintf(pathname, sizeof (pathname), "/dev/zvol/dsk/%s", - dataset); - - for (i = 0; i != MAX_WAIT; i++) { - if (stat64(pathname, &statbuf) == 0) - break; - (void) sleep(1); - } - if (i == MAX_WAIT) - (void) printf(gettext("%s may not be immediately " - "available\n"), pathname); - } + (void) snprintf(path, sizeof (path), "%s/%s", ZVOL_DIR, dataset); + error = zpool_label_disk_wait(path, 10000); + if (error) + (void) printf(gettext("%s may not be immediately " + "available\n"), path); return (0); } @@ -3752,11 +3919,30 @@ zvol_create_link_common(libzfs_handle_t *hdl, const char *dataset, int ifexists) int zvol_remove_link(libzfs_handle_t *hdl, const char *dataset) { - zfs_cmd_t zc = { 0 }; + zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; + int timeout = 3000; /* in milliseconds */ + int error = 0; + int i; (void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name)); - if (ioctl(hdl->libzfs_fd, ZFS_IOC_REMOVE_MINOR, &zc) != 0) { + /* + * Due to concurrent updates by udev the device may be reported as + * busy. In this case don't immediately fail. Instead briefly delay + * and retry the ioctl() which is now likely to succeed. If unable + * remove the link after timeout milliseconds return the failure. + */ + for (i = 0; i < timeout; i++) { + error = ioctl(hdl->libzfs_fd, ZFS_IOC_REMOVE_MINOR, &zc); + if (error && errno == EBUSY) { + usleep(1000); + continue; + } else { + break; + } + } + + if (error) { switch (errno) { case ENXIO: /* @@ -3791,10 +3977,12 @@ zfs_get_user_props(zfs_handle_t *zhp) * for new unique user properties and add them to the list. * * - For non fixed-width properties, keep track of the maximum width seen - * so that we can size the column appropriately. + * so that we can size the column appropriately. If the user has + * requested received property values, we also need to compute the width + * of the RECEIVED column. */ int -zfs_expand_proplist(zfs_handle_t *zhp, zprop_list_t **plp) +zfs_expand_proplist(zfs_handle_t *zhp, zprop_list_t **plp, boolean_t received) { libzfs_handle_t *hdl = zhp->zfs_hdl; zprop_list_t *entry; @@ -3865,84 +4053,30 @@ zfs_expand_proplist(zfs_handle_t *zhp, zprop_list_t **plp) if (strlen(buf) > entry->pl_width) entry->pl_width = strlen(buf); } - } else if (nvlist_lookup_nvlist(userprops, - entry->pl_user_prop, &propval) == 0) { - verify(nvlist_lookup_string(propval, - ZPROP_VALUE, &strval) == 0); - if (strlen(strval) > entry->pl_width) - entry->pl_width = strlen(strval); + if (received && zfs_prop_get_recvd(zhp, + zfs_prop_to_name(entry->pl_prop), + buf, sizeof (buf), B_FALSE) == 0) + if (strlen(buf) > entry->pl_recvd_width) + entry->pl_recvd_width = strlen(buf); + } else { + if (nvlist_lookup_nvlist(userprops, entry->pl_user_prop, + &propval) == 0) { + verify(nvlist_lookup_string(propval, + ZPROP_VALUE, &strval) == 0); + if (strlen(strval) > entry->pl_width) + entry->pl_width = strlen(strval); + } + if (received && zfs_prop_get_recvd(zhp, + entry->pl_user_prop, + buf, sizeof (buf), B_FALSE) == 0) + if (strlen(buf) > entry->pl_recvd_width) + entry->pl_recvd_width = strlen(buf); } } return (0); } -int -zfs_iscsi_perm_check(libzfs_handle_t *hdl, char *dataset, ucred_t *cred) -{ - zfs_cmd_t zc = { 0 }; - nvlist_t *nvp; - gid_t gid; - uid_t uid; - const gid_t *groups; - int group_cnt; - int error; - - if (nvlist_alloc(&nvp, NV_UNIQUE_NAME, 0) != 0) - return (no_memory(hdl)); - - uid = ucred_geteuid(cred); - gid = ucred_getegid(cred); - group_cnt = ucred_getgroups(cred, &groups); - - if (uid == (uid_t)-1 || gid == (uid_t)-1 || group_cnt == (uid_t)-1) - return (1); - - if (nvlist_add_uint32(nvp, ZFS_DELEG_PERM_UID, uid) != 0) { - nvlist_free(nvp); - return (1); - } - - if (nvlist_add_uint32(nvp, ZFS_DELEG_PERM_GID, gid) != 0) { - nvlist_free(nvp); - return (1); - } - - if (nvlist_add_uint32_array(nvp, - ZFS_DELEG_PERM_GROUPS, (uint32_t *)groups, group_cnt) != 0) { - nvlist_free(nvp); - return (1); - } - (void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name)); - - if (zcmd_write_src_nvlist(hdl, &zc, nvp)) - return (-1); - - error = ioctl(hdl->libzfs_fd, ZFS_IOC_ISCSI_PERM_CHECK, &zc); - nvlist_free(nvp); - return (error); -} - -int -zfs_deleg_share_nfs(libzfs_handle_t *hdl, char *dataset, char *path, - char *resource, void *export, void *sharetab, - int sharemax, zfs_share_op_t operation) -{ - zfs_cmd_t zc = { 0 }; - int error; - - (void) strlcpy(zc.zc_name, dataset, sizeof (zc.zc_name)); - (void) strlcpy(zc.zc_value, path, sizeof (zc.zc_value)); - if (resource) - (void) strlcpy(zc.zc_string, resource, sizeof (zc.zc_string)); - zc.zc_share.z_sharedata = (uint64_t)(uintptr_t)sharetab; - zc.zc_share.z_exportdata = (uint64_t)(uintptr_t)export; - zc.zc_share.z_sharetype = operation; - zc.zc_share.z_sharemax = sharemax; - error = ioctl(hdl->libzfs_fd, ZFS_IOC_SHARE, &zc); - return (error); -} - void zfs_prune_proplist(zfs_handle_t *zhp, uint8_t *props) { @@ -3961,9 +4095,11 @@ zfs_prune_proplist(zfs_handle_t *zhp, uint8_t *props) nvpair_t *next = nvlist_next_nvpair(zhp->zfs_props, curr); /* - * We leave user:props in the nvlist, so there will be - * some ZPROP_INVAL. To be extra safe, don't prune - * those. + * User properties will result in ZPROP_INVAL, and since we + * only know how to prune standard ZFS properties, we always + * leave these in the list. This can also happen if we + * encounter an unknown DSL property (when running older + * software, for example). */ if (zfs_prop != ZPROP_INVAL && props[zfs_prop] == B_FALSE) (void) nvlist_remove(zhp->zfs_props, @@ -3976,7 +4112,7 @@ static int zfs_smb_acl_mgmt(libzfs_handle_t *hdl, char *dataset, char *path, zfs_smb_acl_op_t cmd, char *resource1, char *resource2) { - zfs_cmd_t zc = { 0 }; + zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; nvlist_t *nvlist = NULL; int error; @@ -3987,7 +4123,7 @@ zfs_smb_acl_mgmt(libzfs_handle_t *hdl, char *dataset, char *path, if (cmd == ZFS_SMB_ACL_RENAME) { if (nvlist_alloc(&nvlist, NV_UNIQUE_NAME, 0) != 0) { (void) no_memory(hdl); - return (NULL); + return (-1); } } @@ -4058,7 +4194,7 @@ int zfs_userspace(zfs_handle_t *zhp, zfs_userquota_prop_t type, zfs_userspace_cb_t func, void *arg) { - zfs_cmd_t zc = { 0 }; + zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; int error; zfs_useracct_t buf[100]; @@ -4089,3 +4225,328 @@ zfs_userspace(zfs_handle_t *zhp, zfs_userquota_prop_t type, return (error); } + +int +zfs_hold(zfs_handle_t *zhp, const char *snapname, const char *tag, + boolean_t recursive, boolean_t temphold, boolean_t enoent_ok, + int cleanup_fd, uint64_t dsobj, uint64_t createtxg) +{ + zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; + libzfs_handle_t *hdl = zhp->zfs_hdl; + + ASSERT(!recursive || dsobj == 0); + + (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); + (void) strlcpy(zc.zc_value, snapname, sizeof (zc.zc_value)); + if (strlcpy(zc.zc_string, tag, sizeof (zc.zc_string)) + >= sizeof (zc.zc_string)) + return (zfs_error(hdl, EZFS_TAGTOOLONG, tag)); + zc.zc_cookie = recursive; + zc.zc_temphold = temphold; + zc.zc_cleanup_fd = cleanup_fd; + zc.zc_sendobj = dsobj; + zc.zc_createtxg = createtxg; + + if (zfs_ioctl(hdl, ZFS_IOC_HOLD, &zc) != 0) { + char errbuf[ZFS_MAXNAMELEN+32]; + + /* + * if it was recursive, the one that actually failed will be in + * zc.zc_name. + */ + (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, + "cannot hold '%s@%s'"), zc.zc_name, snapname); + switch (errno) { + case E2BIG: + /* + * Temporary tags wind up having the ds object id + * prepended. So even if we passed the length check + * above, it's still possible for the tag to wind + * up being slightly too long. + */ + return (zfs_error(hdl, EZFS_TAGTOOLONG, errbuf)); + case ENOTSUP: + zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, + "pool must be upgraded")); + return (zfs_error(hdl, EZFS_BADVERSION, errbuf)); + case EINVAL: + return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); + case EEXIST: + return (zfs_error(hdl, EZFS_REFTAG_HOLD, errbuf)); + case ENOENT: + if (enoent_ok) + return (ENOENT); + /* FALLTHROUGH */ + default: + return (zfs_standard_error_fmt(hdl, errno, errbuf)); + } + } + + return (0); +} + +int +zfs_release(zfs_handle_t *zhp, const char *snapname, const char *tag, + boolean_t recursive) +{ + zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; + libzfs_handle_t *hdl = zhp->zfs_hdl; + + (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); + (void) strlcpy(zc.zc_value, snapname, sizeof (zc.zc_value)); + if (strlcpy(zc.zc_string, tag, sizeof (zc.zc_string)) + >= sizeof (zc.zc_string)) + return (zfs_error(hdl, EZFS_TAGTOOLONG, tag)); + zc.zc_cookie = recursive; + + if (zfs_ioctl(hdl, ZFS_IOC_RELEASE, &zc) != 0) { + char errbuf[ZFS_MAXNAMELEN+32]; + + /* + * if it was recursive, the one that actually failed will be in + * zc.zc_name. + */ + (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, + "cannot release '%s' from '%s@%s'"), tag, zc.zc_name, + snapname); + switch (errno) { + case ESRCH: + return (zfs_error(hdl, EZFS_REFTAG_RELE, errbuf)); + case ENOTSUP: + zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, + "pool must be upgraded")); + return (zfs_error(hdl, EZFS_BADVERSION, errbuf)); + case EINVAL: + return (zfs_error(hdl, EZFS_BADTYPE, errbuf)); + default: + return (zfs_standard_error_fmt(hdl, errno, errbuf)); + } + } + + return (0); +} + +int +zfs_get_fsacl(zfs_handle_t *zhp, nvlist_t **nvl) +{ + zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; + libzfs_handle_t *hdl = zhp->zfs_hdl; + int nvsz = 2048; + void *nvbuf; + int err = 0; + char errbuf[ZFS_MAXNAMELEN+32]; + + assert(zhp->zfs_type == ZFS_TYPE_VOLUME || + zhp->zfs_type == ZFS_TYPE_FILESYSTEM); + +tryagain: + + nvbuf = malloc(nvsz); + if (nvbuf == NULL) { + err = (zfs_error(hdl, EZFS_NOMEM, strerror(errno))); + goto out; + } + + zc.zc_nvlist_dst_size = nvsz; + zc.zc_nvlist_dst = (uintptr_t)nvbuf; + + (void) strlcpy(zc.zc_name, zhp->zfs_name, ZFS_MAXNAMELEN); + + if (zfs_ioctl(hdl, ZFS_IOC_GET_FSACL, &zc) != 0) { + (void) snprintf(errbuf, sizeof (errbuf), + dgettext(TEXT_DOMAIN, "cannot get permissions on '%s'"), + zc.zc_name); + switch (errno) { + case ENOMEM: + free(nvbuf); + nvsz = zc.zc_nvlist_dst_size; + goto tryagain; + + case ENOTSUP: + zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, + "pool must be upgraded")); + err = zfs_error(hdl, EZFS_BADVERSION, errbuf); + break; + case EINVAL: + err = zfs_error(hdl, EZFS_BADTYPE, errbuf); + break; + case ENOENT: + err = zfs_error(hdl, EZFS_NOENT, errbuf); + break; + default: + err = zfs_standard_error_fmt(hdl, errno, errbuf); + break; + } + } else { + /* success */ + int rc = nvlist_unpack(nvbuf, zc.zc_nvlist_dst_size, nvl, 0); + if (rc) { + (void) snprintf(errbuf, sizeof (errbuf), dgettext( + TEXT_DOMAIN, "cannot get permissions on '%s'"), + zc.zc_name); + err = zfs_standard_error_fmt(hdl, rc, errbuf); + } + } + + free(nvbuf); +out: + return (err); +} + +int +zfs_set_fsacl(zfs_handle_t *zhp, boolean_t un, nvlist_t *nvl) +{ + zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; + libzfs_handle_t *hdl = zhp->zfs_hdl; + char *nvbuf; + char errbuf[ZFS_MAXNAMELEN+32]; + size_t nvsz; + int err; + + assert(zhp->zfs_type == ZFS_TYPE_VOLUME || + zhp->zfs_type == ZFS_TYPE_FILESYSTEM); + + err = nvlist_size(nvl, &nvsz, NV_ENCODE_NATIVE); + assert(err == 0); + + nvbuf = malloc(nvsz); + + err = nvlist_pack(nvl, &nvbuf, &nvsz, NV_ENCODE_NATIVE, 0); + assert(err == 0); + + zc.zc_nvlist_src_size = nvsz; + zc.zc_nvlist_src = (uintptr_t)nvbuf; + zc.zc_perm_action = un; + + (void) strlcpy(zc.zc_name, zhp->zfs_name, sizeof (zc.zc_name)); + + if (zfs_ioctl(hdl, ZFS_IOC_SET_FSACL, &zc) != 0) { + (void) snprintf(errbuf, sizeof (errbuf), + dgettext(TEXT_DOMAIN, "cannot set permissions on '%s'"), + zc.zc_name); + switch (errno) { + case ENOTSUP: + zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, + "pool must be upgraded")); + err = zfs_error(hdl, EZFS_BADVERSION, errbuf); + break; + case EINVAL: + err = zfs_error(hdl, EZFS_BADTYPE, errbuf); + break; + case ENOENT: + err = zfs_error(hdl, EZFS_NOENT, errbuf); + break; + default: + err = zfs_standard_error_fmt(hdl, errno, errbuf); + break; + } + } + + free(nvbuf); + + return (err); +} + +int +zfs_get_holds(zfs_handle_t *zhp, nvlist_t **nvl) +{ + zfs_cmd_t zc = { "\0", "\0", "\0", "\0", 0 }; + libzfs_handle_t *hdl = zhp->zfs_hdl; + int nvsz = 2048; + void *nvbuf; + int err = 0; + char errbuf[ZFS_MAXNAMELEN+32]; + + assert(zhp->zfs_type == ZFS_TYPE_SNAPSHOT); + +tryagain: + + nvbuf = malloc(nvsz); + if (nvbuf == NULL) { + err = (zfs_error(hdl, EZFS_NOMEM, strerror(errno))); + goto out; + } + + zc.zc_nvlist_dst_size = nvsz; + zc.zc_nvlist_dst = (uintptr_t)nvbuf; + + (void) strlcpy(zc.zc_name, zhp->zfs_name, ZFS_MAXNAMELEN); + + if (zfs_ioctl(hdl, ZFS_IOC_GET_HOLDS, &zc) != 0) { + (void) snprintf(errbuf, sizeof (errbuf), + dgettext(TEXT_DOMAIN, "cannot get holds for '%s'"), + zc.zc_name); + switch (errno) { + case ENOMEM: + free(nvbuf); + nvsz = zc.zc_nvlist_dst_size; + goto tryagain; + + case ENOTSUP: + zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, + "pool must be upgraded")); + err = zfs_error(hdl, EZFS_BADVERSION, errbuf); + break; + case EINVAL: + err = zfs_error(hdl, EZFS_BADTYPE, errbuf); + break; + case ENOENT: + err = zfs_error(hdl, EZFS_NOENT, errbuf); + break; + default: + err = zfs_standard_error_fmt(hdl, errno, errbuf); + break; + } + } else { + /* success */ + int rc = nvlist_unpack(nvbuf, zc.zc_nvlist_dst_size, nvl, 0); + if (rc) { + (void) snprintf(errbuf, sizeof (errbuf), + dgettext(TEXT_DOMAIN, "cannot get holds for '%s'"), + zc.zc_name); + err = zfs_standard_error_fmt(hdl, rc, errbuf); + } + } + + free(nvbuf); +out: + return (err); +} + +uint64_t +zvol_volsize_to_reservation(uint64_t volsize, nvlist_t *props) +{ + uint64_t numdb; + uint64_t nblocks, volblocksize; + int ncopies; + char *strval; + + if (nvlist_lookup_string(props, + zfs_prop_to_name(ZFS_PROP_COPIES), &strval) == 0) + ncopies = atoi(strval); + else + ncopies = 1; + if (nvlist_lookup_uint64(props, + zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), + &volblocksize) != 0) + volblocksize = ZVOL_DEFAULT_BLOCKSIZE; + nblocks = volsize/volblocksize; + /* start with metadnode L0-L6 */ + numdb = 7; + /* calculate number of indirects */ + while (nblocks > 1) { + nblocks += DNODES_PER_LEVEL - 1; + nblocks /= DNODES_PER_LEVEL; + numdb += nblocks; + } + numdb *= MIN(SPA_DVAS_PER_BP, ncopies + 1); + volsize *= ncopies; + /* + * this is exactly DN_MAX_INDBLKSHIFT when metadata isn't + * compressed, but in practice they compress down to about + * 1100 bytes + */ + numdb *= 1ULL << DN_MAX_INDBLKSHIFT; + volsize += numdb; + return (volsize); +}