diff options
author | Renato Botelho <renato@netgate.com> | 2016-10-12 11:41:26 -0300 |
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committer | Renato Botelho <renato@netgate.com> | 2016-10-12 11:41:26 -0300 |
commit | cb642130dfc50717bb970a104c44aa7690930a38 (patch) | |
tree | c67f108534217a209198c6b201949ecc73acaba3 /cddl/contrib/opensolaris/lib/libzfs/common/libzfs_sendrecv.c | |
parent | 5dd7ab172435dc99e1abc1f7d73fd5e720050bbc (diff) | |
parent | cd04fbc5e631c6b3e80a14eb7044c3be35fba2d2 (diff) | |
download | FreeBSD-src-cb642130dfc50717bb970a104c44aa7690930a38.zip FreeBSD-src-cb642130dfc50717bb970a104c44aa7690930a38.tar.gz |
Merge remote-tracking branch 'origin/stable/11' into devel-11
Diffstat (limited to 'cddl/contrib/opensolaris/lib/libzfs/common/libzfs_sendrecv.c')
-rw-r--r-- | cddl/contrib/opensolaris/lib/libzfs/common/libzfs_sendrecv.c | 177 |
1 files changed, 140 insertions, 37 deletions
diff --git a/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_sendrecv.c b/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_sendrecv.c index eb9a9dd..3b315b7 100644 --- a/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_sendrecv.c +++ b/cddl/contrib/opensolaris/lib/libzfs/common/libzfs_sendrecv.c @@ -23,11 +23,11 @@ * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. * Copyright (c) 2011, 2015 by Delphix. All rights reserved. * Copyright (c) 2012, Joyent, Inc. All rights reserved. - * Copyright (c) 2012 Pawel Jakub Dawidek <pawel@dawidek.net>. - * All rights reserved. + * Copyright (c) 2012 Pawel Jakub Dawidek. All rights reserved. * Copyright (c) 2013 Steven Hartland. All rights reserved. * Copyright 2015, OmniTI Computer Consulting, Inc. All rights reserved. * Copyright (c) 2014 Integros [integros.com] + * Copyright 2016 Igor Kozhukhov <ikozhukhov@gmail.com> */ #include <assert.h> @@ -580,13 +580,30 @@ fsavl_create(nvlist_t *fss) * Routines for dealing with the giant nvlist of fs-nvlists, etc. */ typedef struct send_data { + /* + * assigned inside every recursive call, + * restored from *_save on return: + * + * guid of fromsnap snapshot in parent dataset + * txg of fromsnap snapshot in current dataset + * txg of tosnap snapshot in current dataset + */ + uint64_t parent_fromsnap_guid; + uint64_t fromsnap_txg; + uint64_t tosnap_txg; + + /* the nvlists get accumulated during depth-first traversal */ nvlist_t *parent_snaps; nvlist_t *fss; nvlist_t *snapprops; + + /* send-receive configuration, does not change during traversal */ + const char *fsname; const char *fromsnap; const char *tosnap; boolean_t recursive; + boolean_t verbose; /* * The header nvlist is of the following format: @@ -619,11 +636,23 @@ send_iterate_snap(zfs_handle_t *zhp, void *arg) { send_data_t *sd = arg; uint64_t guid = zhp->zfs_dmustats.dds_guid; + uint64_t txg = zhp->zfs_dmustats.dds_creation_txg; char *snapname; nvlist_t *nv; snapname = strrchr(zhp->zfs_name, '@')+1; + if (sd->tosnap_txg != 0 && txg > sd->tosnap_txg) { + if (sd->verbose) { + (void) fprintf(stderr, dgettext(TEXT_DOMAIN, + "skipping snapshot %s because it was created " + "after the destination snapshot (%s)\n"), + zhp->zfs_name, sd->tosnap); + } + zfs_close(zhp); + return (0); + } + VERIFY(0 == nvlist_add_uint64(sd->parent_snaps, snapname, guid)); /* * NB: if there is no fromsnap here (it's a newly created fs in @@ -717,6 +746,31 @@ send_iterate_prop(zfs_handle_t *zhp, nvlist_t *nv) } /* + * returns snapshot creation txg + * and returns 0 if the snapshot does not exist + */ +static uint64_t +get_snap_txg(libzfs_handle_t *hdl, const char *fs, const char *snap) +{ + char name[ZFS_MAX_DATASET_NAME_LEN]; + uint64_t txg = 0; + + if (fs == NULL || fs[0] == '\0' || snap == NULL || snap[0] == '\0') + return (txg); + + (void) snprintf(name, sizeof (name), "%s@%s", fs, snap); + if (zfs_dataset_exists(hdl, name, ZFS_TYPE_SNAPSHOT)) { + zfs_handle_t *zhp = zfs_open(hdl, name, ZFS_TYPE_SNAPSHOT); + if (zhp != NULL) { + txg = zfs_prop_get_int(zhp, ZFS_PROP_CREATETXG); + zfs_close(zhp); + } + } + + return (txg); +} + +/* * recursively generate nvlists describing datasets. See comment * for the data structure send_data_t above for description of contents * of the nvlist. @@ -728,9 +782,48 @@ send_iterate_fs(zfs_handle_t *zhp, void *arg) nvlist_t *nvfs, *nv; int rv = 0; uint64_t parent_fromsnap_guid_save = sd->parent_fromsnap_guid; + uint64_t fromsnap_txg_save = sd->fromsnap_txg; + uint64_t tosnap_txg_save = sd->tosnap_txg; + uint64_t txg = zhp->zfs_dmustats.dds_creation_txg; uint64_t guid = zhp->zfs_dmustats.dds_guid; + uint64_t fromsnap_txg, tosnap_txg; char guidstring[64]; + fromsnap_txg = get_snap_txg(zhp->zfs_hdl, zhp->zfs_name, sd->fromsnap); + if (fromsnap_txg != 0) + sd->fromsnap_txg = fromsnap_txg; + + tosnap_txg = get_snap_txg(zhp->zfs_hdl, zhp->zfs_name, sd->tosnap); + if (tosnap_txg != 0) + sd->tosnap_txg = tosnap_txg; + + /* + * on the send side, if the current dataset does not have tosnap, + * perform two additional checks: + * + * - skip sending the current dataset if it was created later than + * the parent tosnap + * - return error if the current dataset was created earlier than + * the parent tosnap + */ + if (sd->tosnap != NULL && tosnap_txg == 0) { + if (sd->tosnap_txg != 0 && txg > sd->tosnap_txg) { + if (sd->verbose) { + (void) fprintf(stderr, dgettext(TEXT_DOMAIN, + "skipping dataset %s: snapshot %s does " + "not exist\n"), zhp->zfs_name, sd->tosnap); + } + } else { + (void) fprintf(stderr, dgettext(TEXT_DOMAIN, + "cannot send %s@%s%s: snapshot %s@%s does not " + "exist\n"), sd->fsname, sd->tosnap, sd->recursive ? + dgettext(TEXT_DOMAIN, " recursively") : "", + zhp->zfs_name, sd->tosnap); + rv = -1; + } + goto out; + } + VERIFY(0 == nvlist_alloc(&nvfs, NV_UNIQUE_NAME, 0)); VERIFY(0 == nvlist_add_string(nvfs, "name", zhp->zfs_name)); VERIFY(0 == nvlist_add_uint64(nvfs, "parentfromsnap", @@ -739,8 +832,10 @@ send_iterate_fs(zfs_handle_t *zhp, void *arg) if (zhp->zfs_dmustats.dds_origin[0]) { zfs_handle_t *origin = zfs_open(zhp->zfs_hdl, zhp->zfs_dmustats.dds_origin, ZFS_TYPE_SNAPSHOT); - if (origin == NULL) - return (-1); + if (origin == NULL) { + rv = -1; + goto out; + } VERIFY(0 == nvlist_add_uint64(nvfs, "origin", origin->zfs_dmustats.dds_guid)); } @@ -771,7 +866,10 @@ send_iterate_fs(zfs_handle_t *zhp, void *arg) if (sd->recursive) rv = zfs_iter_filesystems(zhp, send_iterate_fs, sd); +out: sd->parent_fromsnap_guid = parent_fromsnap_guid_save; + sd->fromsnap_txg = fromsnap_txg_save; + sd->tosnap_txg = tosnap_txg_save; zfs_close(zhp); return (rv); @@ -779,7 +877,8 @@ send_iterate_fs(zfs_handle_t *zhp, void *arg) static int gather_nvlist(libzfs_handle_t *hdl, const char *fsname, const char *fromsnap, - const char *tosnap, boolean_t recursive, nvlist_t **nvlp, avl_tree_t **avlp) + const char *tosnap, boolean_t recursive, boolean_t verbose, + nvlist_t **nvlp, avl_tree_t **avlp) { zfs_handle_t *zhp; send_data_t sd = { 0 }; @@ -790,9 +889,11 @@ gather_nvlist(libzfs_handle_t *hdl, const char *fsname, const char *fromsnap, return (EZFS_BADTYPE); VERIFY(0 == nvlist_alloc(&sd.fss, NV_UNIQUE_NAME, 0)); + sd.fsname = fsname; sd.fromsnap = fromsnap; sd.tosnap = tosnap; sd.recursive = recursive; + sd.verbose = verbose; if ((error = send_iterate_fs(zhp, &sd)) != 0) { nvlist_free(sd.fss); @@ -819,7 +920,7 @@ typedef struct send_dump_data { /* these are all just the short snapname (the part after the @) */ const char *fromsnap; const char *tosnap; - char prevsnap[ZFS_MAXNAMELEN]; + char prevsnap[ZFS_MAX_DATASET_NAME_LEN]; uint64_t prevsnap_obj; boolean_t seenfrom, seento, replicate, doall, fromorigin; boolean_t verbose, dryrun, parsable, progress, embed_data, std_out; @@ -832,7 +933,7 @@ typedef struct send_dump_data { snapfilter_cb_t *filter_cb; void *filter_cb_arg; nvlist_t *debugnv; - char holdtag[ZFS_MAXNAMELEN]; + char holdtag[ZFS_MAX_DATASET_NAME_LEN]; int cleanup_fd; uint64_t size; } send_dump_data_t; @@ -1183,8 +1284,8 @@ dump_snapshot(zfs_handle_t *zhp, void *arg) pa.pa_fd = sdd->outfd; pa.pa_parsable = sdd->parsable; - if (err = pthread_create(&tid, NULL, - send_progress_thread, &pa)) { + if ((err = pthread_create(&tid, NULL, + send_progress_thread, &pa)) != 0) { zfs_close(zhp); return (err); } @@ -1468,7 +1569,7 @@ zfs_send_resume(libzfs_handle_t *hdl, sendflags_t *flags, int outfd, uint64_t resumeobj, resumeoff, toguid, fromguid, bytes; zfs_handle_t *zhp; int error = 0; - char name[ZFS_MAXNAMELEN]; + char name[ZFS_MAX_DATASET_NAME_LEN]; enum lzc_send_flags lzc_flags = 0; (void) snprintf(errbuf, sizeof (errbuf), dgettext(TEXT_DOMAIN, @@ -1662,7 +1763,7 @@ zfs_send(zfs_handle_t *zhp, const char *fromsnap, const char *tosnap, if (flags->dedup && !flags->dryrun) { featureflags |= (DMU_BACKUP_FEATURE_DEDUP | DMU_BACKUP_FEATURE_DEDUPPROPS); - if (err = pipe(pipefd)) { + if ((err = pipe(pipefd)) != 0) { zfs_error_aux(zhp->zfs_hdl, strerror(errno)); return (zfs_error(zhp->zfs_hdl, EZFS_PIPEFAILED, errbuf)); @@ -1670,7 +1771,7 @@ zfs_send(zfs_handle_t *zhp, const char *fromsnap, const char *tosnap, dda.outputfd = outfd; dda.inputfd = pipefd[1]; dda.dedup_hdl = zhp->zfs_hdl; - if (err = pthread_create(&tid, NULL, cksummer, &dda)) { + if ((err = pthread_create(&tid, NULL, cksummer, &dda)) != 0) { (void) close(pipefd[0]); (void) close(pipefd[1]); zfs_error_aux(zhp->zfs_hdl, strerror(errno)); @@ -1700,7 +1801,8 @@ zfs_send(zfs_handle_t *zhp, const char *fromsnap, const char *tosnap, } err = gather_nvlist(zhp->zfs_hdl, zhp->zfs_name, - fromsnap, tosnap, flags->replicate, &fss, &fsavl); + fromsnap, tosnap, flags->replicate, flags->verbose, + &fss, &fsavl); if (err) goto err_out; VERIFY(0 == nvlist_add_nvlist(hdrnv, "fss", fss)); @@ -2061,8 +2163,8 @@ recv_rename(libzfs_handle_t *hdl, const char *name, const char *tryname, if (err != 0 && strncmp(name + baselen, "recv-", 5) != 0) { seq++; - (void) snprintf(newname, ZFS_MAXNAMELEN, "%.*srecv-%u-%u", - baselen, name, getpid(), seq); + (void) snprintf(newname, ZFS_MAX_DATASET_NAME_LEN, + "%.*srecv-%u-%u", baselen, name, getpid(), seq); (void) strlcpy(zc.zc_value, newname, sizeof (zc.zc_value)); if (flags->verbose) { @@ -2190,7 +2292,7 @@ static int guid_to_name(libzfs_handle_t *hdl, const char *parent, uint64_t guid, boolean_t bookmark_ok, char *name) { - char pname[ZFS_MAXNAMELEN]; + char pname[ZFS_MAX_DATASET_NAME_LEN]; guid_to_name_data_t gtnd; gtnd.guid = guid; @@ -2245,7 +2347,7 @@ created_before(libzfs_handle_t *hdl, avl_tree_t *avl, { nvlist_t *nvfs; char *fsname, *snapname; - char buf[ZFS_MAXNAMELEN]; + char buf[ZFS_MAX_DATASET_NAME_LEN]; int rv; zfs_handle_t *guid1hdl, *guid2hdl; uint64_t create1, create2; @@ -2296,7 +2398,7 @@ recv_incremental_replication(libzfs_handle_t *hdl, const char *tofs, avl_tree_t *local_avl; nvpair_t *fselem, *nextfselem; char *fromsnap; - char newname[ZFS_MAXNAMELEN]; + char newname[ZFS_MAX_DATASET_NAME_LEN]; char guidname[32]; int error; boolean_t needagain, progress, recursive; @@ -2316,7 +2418,7 @@ again: VERIFY(0 == nvlist_alloc(&deleted, NV_UNIQUE_NAME, 0)); if ((error = gather_nvlist(hdl, tofs, fromsnap, NULL, - recursive, &local_nv, &local_avl)) != 0) + recursive, B_FALSE, &local_nv, &local_avl)) != 0) return (error); /* @@ -2415,7 +2517,7 @@ again: /* check for delete */ if (found == NULL) { - char name[ZFS_MAXNAMELEN]; + char name[ZFS_MAX_DATASET_NAME_LEN]; if (!flags->force) continue; @@ -2455,8 +2557,8 @@ again: /* check for different snapname */ if (strcmp(nvpair_name(snapelem), stream_snapname) != 0) { - char name[ZFS_MAXNAMELEN]; - char tryname[ZFS_MAXNAMELEN]; + char name[ZFS_MAX_DATASET_NAME_LEN]; + char tryname[ZFS_MAX_DATASET_NAME_LEN]; (void) snprintf(name, sizeof (name), "%s@%s", fsname, nvpair_name(snapelem)); @@ -2538,7 +2640,7 @@ again: ((flags->isprefix || strcmp(tofs, fsname) != 0) && (s1 != NULL) && (s2 != NULL) && strcmp(s1, s2) != 0)) { nvlist_t *parent; - char tryname[ZFS_MAXNAMELEN]; + char tryname[ZFS_MAX_DATASET_NAME_LEN]; parent = fsavl_find(local_avl, stream_parent_fromsnap_guid, NULL); @@ -2606,8 +2708,8 @@ zfs_receive_package(libzfs_handle_t *hdl, int fd, const char *destname, char *fromsnap = NULL; char *sendsnap = NULL; char *cp; - char tofs[ZFS_MAXNAMELEN]; - char sendfs[ZFS_MAXNAMELEN]; + char tofs[ZFS_MAX_DATASET_NAME_LEN]; + char sendfs[ZFS_MAX_DATASET_NAME_LEN]; char errbuf[1024]; dmu_replay_record_t drre; int error; @@ -2691,7 +2793,7 @@ zfs_receive_package(libzfs_handle_t *hdl, int fd, const char *destname, nvlist_t *renamed = NULL; nvpair_t *pair = NULL; - (void) strlcpy(tofs, destname, ZFS_MAXNAMELEN); + (void) strlcpy(tofs, destname, sizeof (tofs)); if (flags->isprefix) { struct drr_begin *drrb = &drr->drr_u.drr_begin; int i; @@ -2700,7 +2802,7 @@ zfs_receive_package(libzfs_handle_t *hdl, int fd, const char *destname, cp = strrchr(drrb->drr_toname, '/'); if (cp == NULL) { (void) strlcat(tofs, "/", - ZFS_MAXNAMELEN); + sizeof (tofs)); i = 0; } else { i = (cp - drrb->drr_toname); @@ -2710,7 +2812,7 @@ zfs_receive_package(libzfs_handle_t *hdl, int fd, const char *destname, } /* zfs_receive_one() will create_parents() */ (void) strlcat(tofs, &drrb->drr_toname[i], - ZFS_MAXNAMELEN); + sizeof (tofs)); *strchr(tofs, '@') = '\0'; } @@ -2752,7 +2854,7 @@ zfs_receive_package(libzfs_handle_t *hdl, int fd, const char *destname, * zfs_receive_one(). */ (void) strlcpy(sendfs, drr->drr_u.drr_begin.drr_toname, - ZFS_MAXNAMELEN); + sizeof (sendfs)); if ((cp = strchr(sendfs, '@')) != NULL) { *cp = '\0'; /* @@ -2866,7 +2968,7 @@ recv_skip(libzfs_handle_t *hdl, int fd, boolean_t byteswap) break; case DRR_SPILL: if (byteswap) { - drr->drr_u.drr_write.drr_length = + drr->drr_u.drr_spill.drr_length = BSWAP_64(drr->drr_u.drr_spill.drr_length); } (void) recv_read(hdl, fd, buf, @@ -2902,7 +3004,7 @@ static void recv_ecksum_set_aux(libzfs_handle_t *hdl, const char *target_snap, boolean_t resumable) { - char target_fs[ZFS_MAXNAMELEN]; + char target_fs[ZFS_MAX_DATASET_NAME_LEN]; zfs_error_aux(hdl, dgettext(TEXT_DOMAIN, "checksum mismatch or incomplete stream")); @@ -3105,7 +3207,7 @@ zfs_receive_one(libzfs_handle_t *hdl, int infd, const char *tosnap, if (flags->verbose) (void) printf("found clone origin %s\n", zc.zc_string); } else if (originsnap) { - (void) strncpy(zc.zc_string, originsnap, ZFS_MAXNAMELEN); + (void) strncpy(zc.zc_string, originsnap, sizeof (zc.zc_string)); if (flags->verbose) (void) printf("using provided clone origin %s\n", zc.zc_string); @@ -3130,7 +3232,7 @@ zfs_receive_one(libzfs_handle_t *hdl, int infd, const char *tosnap, *cp = '\0'; if (cp && !zfs_dataset_exists(hdl, zc.zc_name, ZFS_TYPE_DATASET)) { - char suffix[ZFS_MAXNAMELEN]; + char suffix[ZFS_MAX_DATASET_NAME_LEN]; (void) strcpy(suffix, strrchr(zc.zc_value, '/')); if (guid_to_name(hdl, zc.zc_name, parent_snapguid, B_FALSE, zc.zc_value) == 0) { @@ -3157,7 +3259,7 @@ zfs_receive_one(libzfs_handle_t *hdl, int infd, const char *tosnap, if ((flags->isprefix || (*(chopprefix = drrb->drr_toname + strlen(sendfs)) != '\0' && *chopprefix != '@')) && !zfs_dataset_exists(hdl, zc.zc_name, ZFS_TYPE_DATASET)) { - char snap[ZFS_MAXNAMELEN]; + char snap[ZFS_MAX_DATASET_NAME_LEN]; (void) strcpy(snap, strchr(zc.zc_value, '@')); if (guid_to_name(hdl, zc.zc_name, drrb->drr_fromguid, B_FALSE, zc.zc_value) == 0) { @@ -3380,7 +3482,7 @@ zfs_receive_one(libzfs_handle_t *hdl, int infd, const char *tosnap, */ *cp = '\0'; if (gather_nvlist(hdl, zc.zc_value, NULL, NULL, B_FALSE, - &local_nv, &local_avl) == 0) { + B_FALSE, &local_nv, &local_avl) == 0) { *cp = '@'; fs = fsavl_find(local_avl, drrb->drr_toguid, NULL); fsavl_destroy(local_avl); @@ -3607,7 +3709,7 @@ zfs_receive_impl(libzfs_handle_t *hdl, const char *tosnap, } if (DMU_GET_STREAM_HDRTYPE(drrb->drr_versioninfo) == DMU_SUBSTREAM) { - char nonpackage_sendfs[ZFS_MAXNAMELEN]; + char nonpackage_sendfs[ZFS_MAX_DATASET_NAME_LEN]; if (sendfs == NULL) { /* * We were not called from zfs_receive_package(). Get @@ -3615,7 +3717,8 @@ zfs_receive_impl(libzfs_handle_t *hdl, const char *tosnap, */ char *cp; (void) strlcpy(nonpackage_sendfs, - drr.drr_u.drr_begin.drr_toname, ZFS_MAXNAMELEN); + drr.drr_u.drr_begin.drr_toname, + sizeof (nonpackage_sendfs)); if ((cp = strchr(nonpackage_sendfs, '@')) != NULL) *cp = '\0'; sendfs = nonpackage_sendfs; |