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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 17:20:00 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 17:20:00 +0000
commit8daa83a594a2e98f39d764422bfbdbc62c9efd44 (patch)
tree4099e8021376c7d8c05bdf8503093d80e9c7bad0 /source3/rpc_server/fss/srv_fss_state.c
parentInitial commit. (diff)
downloadsamba-8daa83a594a2e98f39d764422bfbdbc62c9efd44.tar.xz
samba-8daa83a594a2e98f39d764422bfbdbc62c9efd44.zip
Adding upstream version 2:4.20.0+dfsg.upstream/2%4.20.0+dfsg
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'source3/rpc_server/fss/srv_fss_state.c')
-rw-r--r--source3/rpc_server/fss/srv_fss_state.c698
1 files changed, 698 insertions, 0 deletions
diff --git a/source3/rpc_server/fss/srv_fss_state.c b/source3/rpc_server/fss/srv_fss_state.c
new file mode 100644
index 0000000..8597c36
--- /dev/null
+++ b/source3/rpc_server/fss/srv_fss_state.c
@@ -0,0 +1,698 @@
+/*
+ * File Server Remote VSS Protocol (FSRVP) persistent server state
+ *
+ * Copyright (C) David Disseldorp 2012-2015
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "source3/include/includes.h"
+#include <fcntl.h>
+#include "source3/include/util_tdb.h"
+#include "lib/dbwrap/dbwrap.h"
+#include "lib/dbwrap/dbwrap_open.h"
+#include "librpc/ndr/libndr.h"
+#include "librpc/gen_ndr/ndr_fsrvp_state.h"
+#include "srv_fss_private.h"
+
+#define FSS_DB_KEY_VERSION "db_version"
+#define FSS_DB_KEY_CONTEXT "context"
+#define FSS_DB_KEY_SC_SET_COUNT "sc_set_count"
+#define FSS_DB_KEY_PFX_SC_SET "sc_set/"
+#define FSS_DB_KEY_PFX_SC "sc/"
+#define FSS_DB_KEY_PFX_SMAP "smap/"
+
+static NTSTATUS fss_state_smap_store(TALLOC_CTX *mem_ctx,
+ struct db_context *db,
+ const char *sc_key_str,
+ struct fss_sc_smap *smap)
+{
+ NTSTATUS status;
+ TDB_DATA val;
+ const char *smap_key_str;
+ struct fsrvp_state_smap smap_state;
+ enum ndr_err_code ndr_ret;
+ DATA_BLOB smap_state_blob;
+
+ /* becomes sc_set/@sc_set_id/sc/@sc_id/smap/@sc_share_name */
+ smap_key_str = talloc_asprintf(mem_ctx, "%s/%s%s", sc_key_str,
+ FSS_DB_KEY_PFX_SMAP,
+ smap->sc_share_name);
+ if (smap_key_str == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ smap_state.share_name = smap->share_name;
+ smap_state.sc_share_name = smap->sc_share_name;
+ /* @smap->sc_share_comment may be null if not exposed. */
+ if (smap->sc_share_comment != NULL) {
+ smap_state.sc_share_comment = smap->sc_share_comment;
+ } else {
+ smap_state.sc_share_comment = "";
+ }
+ smap_state.is_exposed = smap->is_exposed;
+
+ ndr_ret = ndr_push_struct_blob(&smap_state_blob, mem_ctx,
+ &smap_state,
+ (ndr_push_flags_fn_t)ndr_push_fsrvp_state_smap);
+ if (ndr_ret != NDR_ERR_SUCCESS) {
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+
+ val.dsize = smap_state_blob.length;
+ val.dptr = smap_state_blob.data;
+
+ status = dbwrap_store(db, string_term_tdb_data(smap_key_str), val, 0);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS fss_state_sc_store(TALLOC_CTX *mem_ctx,
+ struct db_context *db,
+ const char *sc_set_key_str,
+ struct fss_sc *sc)
+{
+ NTSTATUS status;
+ TDB_DATA val;
+ const char *sc_key_str;
+ struct fsrvp_state_sc sc_state;
+ struct fss_sc_smap *smap;
+ enum ndr_err_code ndr_ret;
+ DATA_BLOB sc_state_blob;
+
+ /* becomes sc_set/@sc_set.id/sc/@sc_id */
+ sc_key_str = talloc_asprintf(mem_ctx, "%s/%s%s", sc_set_key_str,
+ FSS_DB_KEY_PFX_SC, sc->id_str);
+ if (sc_key_str == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ sc_state.id_str = sc->id_str;
+ sc_state.volume_name = sc->volume_name;
+ /* @sc->sc_path may be null if not committed, store empty str */
+ sc_state.sc_path = (sc->sc_path ? sc->sc_path : "");
+ sc_state.create_ts = sc->create_ts;
+ sc_state.smaps_count = sc->smaps_count;
+
+ ndr_ret = ndr_push_struct_blob(&sc_state_blob, mem_ctx,
+ &sc_state,
+ (ndr_push_flags_fn_t)ndr_push_fsrvp_state_sc);
+ if (ndr_ret != NDR_ERR_SUCCESS) {
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+
+ val.dsize = sc_state_blob.length;
+ val.dptr = sc_state_blob.data;
+
+ status = dbwrap_store(db, string_term_tdb_data(sc_key_str), val, 0);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+
+ for (smap = sc->smaps; smap; smap = smap->next) {
+ status = fss_state_smap_store(mem_ctx, db, sc_key_str, smap);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+ }
+
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS fss_state_sc_set_store(TALLOC_CTX *mem_ctx,
+ struct db_context *db,
+ struct fss_sc_set *sc_set)
+{
+ NTSTATUS status;
+ TDB_DATA val;
+ const char *sc_set_key_str;
+ struct fss_sc *sc;
+ struct fsrvp_state_sc_set sc_set_state;
+ DATA_BLOB sc_set_state_blob;
+ enum ndr_err_code ndr_ret;
+
+ sc_set_key_str = talloc_asprintf(mem_ctx, "%s%s",
+ FSS_DB_KEY_PFX_SC_SET,
+ sc_set->id_str);
+ if (sc_set_key_str == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ sc_set_state.id_str = sc_set->id_str;
+ sc_set_state.state = sc_set->state;
+ sc_set_state.context = sc_set->context;
+ sc_set_state.scs_count = sc_set->scs_count;
+
+ ndr_ret = ndr_push_struct_blob(&sc_set_state_blob, mem_ctx,
+ &sc_set_state,
+ (ndr_push_flags_fn_t)ndr_push_fsrvp_state_sc_set);
+ if (ndr_ret != NDR_ERR_SUCCESS) {
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+
+ val.dsize = sc_set_state_blob.length;
+ val.dptr = sc_set_state_blob.data;
+
+ status = dbwrap_store(db, string_term_tdb_data(sc_set_key_str), val, 0);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+
+ for (sc = sc_set->scs; sc; sc = sc->next) {
+ status = fss_state_sc_store(mem_ctx, db, sc_set_key_str, sc);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+ }
+
+ return NT_STATUS_OK;
+}
+
+/*
+ * write out the current fsrvp server state to a TDB. This clears any content
+ * currently written to the TDB.
+ */
+_PRIVATE_ NTSTATUS fss_state_store(TALLOC_CTX *mem_ctx,
+ struct fss_sc_set *sc_sets,
+ uint32_t sc_sets_count,
+ const char *db_path)
+{
+ TALLOC_CTX *tmp_ctx;
+ struct db_context *db;
+ NTSTATUS status;
+ int ret;
+ struct fss_sc_set *sc_set;
+
+ tmp_ctx = talloc_new(mem_ctx);
+ if (tmp_ctx == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ db = db_open(tmp_ctx, db_path, 0, TDB_DEFAULT, O_RDWR | O_CREAT,
+ 0600, DBWRAP_LOCK_ORDER_1, DBWRAP_FLAG_NONE);
+ if (db == NULL) {
+ DEBUG(0, ("Failed to open fss state database %s\n", db_path));
+ status = NT_STATUS_ACCESS_DENIED;
+ goto err_ctx_free;
+ }
+
+ ret = dbwrap_wipe(db);
+ if (ret != 0) {
+ status = NT_STATUS_UNSUCCESSFUL;
+ goto err_db_free;
+ }
+
+ status = dbwrap_store_int32_bystring(db, FSS_DB_KEY_VERSION,
+ FSRVP_STATE_DB_VERSION);
+ if (!NT_STATUS_IS_OK(status)) {
+ goto err_db_free;
+ }
+
+ ret = dbwrap_transaction_start(db);
+ if (ret != 0) {
+ status = NT_STATUS_UNSUCCESSFUL;
+ goto err_db_free;
+ }
+
+ status = dbwrap_store_int32_bystring(db, FSS_DB_KEY_SC_SET_COUNT,
+ sc_sets_count);
+ if (!NT_STATUS_IS_OK(status)) {
+ status = NT_STATUS_UNSUCCESSFUL;
+ goto err_trans_cancel;
+ }
+
+ for (sc_set = sc_sets; sc_set; sc_set = sc_set->next) {
+ status = fss_state_sc_set_store(tmp_ctx, db, sc_set);
+ if (!NT_STATUS_IS_OK(status)) {
+ goto err_trans_cancel;
+ }
+ }
+
+ ret = dbwrap_transaction_commit(db);
+ if (ret != 0) {
+ status = NT_STATUS_UNSUCCESSFUL;
+ goto err_trans_cancel;
+ }
+
+ talloc_free(db);
+ talloc_free(tmp_ctx);
+ return NT_STATUS_OK;
+
+err_trans_cancel:
+ dbwrap_transaction_cancel(db);
+err_db_free:
+ talloc_free(db);
+err_ctx_free:
+ talloc_free(tmp_ctx);
+ return status;
+}
+
+static NTSTATUS fss_state_smap_retrieve(TALLOC_CTX *mem_ctx,
+ TDB_DATA *key,
+ TDB_DATA *val,
+ struct fss_sc_smap **smap_out)
+{
+ struct fss_sc_smap *smap;
+ struct fsrvp_state_smap smap_state;
+ DATA_BLOB smap_state_blob;
+ enum ndr_err_code ndr_ret;
+
+ smap_state_blob.length = val->dsize;
+ smap_state_blob.data = val->dptr;
+
+ ndr_ret = ndr_pull_struct_blob(&smap_state_blob, mem_ctx, &smap_state,
+ (ndr_pull_flags_fn_t)ndr_pull_fsrvp_state_smap);
+ if (ndr_ret != NDR_ERR_SUCCESS) {
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+
+ smap = talloc_zero(mem_ctx, struct fss_sc_smap);
+ if (smap == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ smap->share_name = talloc_strdup(smap, smap_state.share_name);
+ if (smap->share_name == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ /* store the full path so that the hierarchy can be rebuilt */
+ smap->sc_share_name = talloc_strdup(smap, (char *)key->dptr);
+ if (smap->sc_share_name == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ /* sc_share_comment may be empty, keep null in such a case */
+ if (strlen(smap_state.sc_share_comment) > 0) {
+ smap->sc_share_comment = talloc_strdup(smap,
+ smap_state.sc_share_comment);
+ if (smap->sc_share_comment == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ }
+
+ smap->is_exposed = smap_state.is_exposed;
+
+ *smap_out = smap;
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS fss_state_sc_retrieve(TALLOC_CTX *mem_ctx,
+ TDB_DATA *key,
+ TDB_DATA *val,
+ struct fss_sc **sc_out)
+{
+ struct fss_sc *sc;
+ struct fsrvp_state_sc sc_state;
+ DATA_BLOB sc_state_blob;
+ enum ndr_err_code ndr_ret;
+
+ sc_state_blob.length = val->dsize;
+ sc_state_blob.data = val->dptr;
+
+ ndr_ret = ndr_pull_struct_blob(&sc_state_blob, mem_ctx, &sc_state,
+ (ndr_pull_flags_fn_t)ndr_pull_fsrvp_state_sc);
+ if (ndr_ret != NDR_ERR_SUCCESS) {
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+
+ sc = talloc_zero(mem_ctx, struct fss_sc);
+ if (sc == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ /* store the full path so that the hierarchy can be rebuilt */
+ sc->id_str = talloc_strdup(sc, (char *)key->dptr);
+ if (sc->id_str == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ sc->volume_name = talloc_strdup(sc, sc_state.volume_name);
+ if (sc->volume_name == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ /* sc_path may be empty, keep null in such a case */
+ if (strlen(sc_state.sc_path) > 0) {
+ sc->sc_path = talloc_strdup(sc, sc_state.sc_path);
+ if (sc->sc_path == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ }
+ sc->create_ts = sc_state.create_ts;
+ sc->smaps_count = sc_state.smaps_count;
+
+ *sc_out = sc;
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS fss_state_sc_set_retrieve(TALLOC_CTX *mem_ctx,
+ TDB_DATA *key,
+ TDB_DATA *val,
+ struct fss_sc_set **sc_set_out)
+{
+ struct fss_sc_set *sc_set;
+ struct fsrvp_state_sc_set sc_set_state;
+ DATA_BLOB sc_set_state_blob;
+ enum ndr_err_code ndr_ret;
+
+ sc_set_state_blob.length = val->dsize;
+ sc_set_state_blob.data = val->dptr;
+
+ ndr_ret = ndr_pull_struct_blob(&sc_set_state_blob, mem_ctx,
+ &sc_set_state,
+ (ndr_pull_flags_fn_t)ndr_pull_fsrvp_state_sc_set);
+ if (ndr_ret != NDR_ERR_SUCCESS) {
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+
+ sc_set = talloc_zero(mem_ctx, struct fss_sc_set);
+ if (sc_set == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ /* store the full path so that the hierarchy can be rebuilt */
+ sc_set->id_str = talloc_strdup(sc_set, (char *)key->dptr);
+ if (sc_set->id_str == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ sc_set->state = sc_set_state.state;
+ sc_set->context = sc_set_state.context;
+ sc_set->scs_count = sc_set_state.scs_count;
+
+ *sc_set_out = sc_set;
+ return NT_STATUS_OK;
+}
+
+struct fss_traverse_state {
+ TALLOC_CTX *mem_ctx;
+ struct fss_sc_smap *smaps;
+ uint32_t smaps_count;
+ struct fss_sc *scs;
+ uint32_t scs_count;
+ struct fss_sc_set *sc_sets;
+ uint32_t sc_sets_count;
+ NTSTATUS (*smap_retrieve)(TALLOC_CTX *mem_ctx,
+ TDB_DATA *key,
+ TDB_DATA *val,
+ struct fss_sc_smap **smap_out);
+ NTSTATUS (*sc_retrieve)(TALLOC_CTX *mem_ctx,
+ TDB_DATA *key,
+ TDB_DATA *val,
+ struct fss_sc **sc_out);
+ NTSTATUS (*sc_set_retrieve)(TALLOC_CTX *mem_ctx,
+ TDB_DATA *key,
+ TDB_DATA *val,
+ struct fss_sc_set **sc_set_out);
+};
+
+static int fss_state_retrieve_traverse(struct db_record *rec,
+ void *private_data)
+{
+ NTSTATUS status;
+ struct fss_traverse_state *trv_state
+ = (struct fss_traverse_state *)private_data;
+ TDB_DATA key = dbwrap_record_get_key(rec);
+ TDB_DATA val = dbwrap_record_get_value(rec);
+
+ /* order of checking is important here */
+ if (strstr((char *)key.dptr, FSS_DB_KEY_PFX_SMAP) != NULL) {
+ struct fss_sc_smap *smap;
+ status = trv_state->smap_retrieve(trv_state->mem_ctx,
+ &key, &val, &smap);
+ if (!NT_STATUS_IS_OK(status)) {
+ return -1;
+ }
+ DLIST_ADD_END(trv_state->smaps, smap);
+ trv_state->smaps_count++;
+ } else if (strstr((char *)key.dptr, FSS_DB_KEY_PFX_SC) != NULL) {
+ struct fss_sc *sc;
+ status = trv_state->sc_retrieve(trv_state->mem_ctx,
+ &key, &val, &sc);
+ if (!NT_STATUS_IS_OK(status)) {
+ return -1;
+ }
+ DLIST_ADD_END(trv_state->scs, sc);
+ trv_state->scs_count++;
+ } else if (strstr((char *)key.dptr, FSS_DB_KEY_PFX_SC_SET) != NULL) {
+ struct fss_sc_set *sc_set;
+ status = trv_state->sc_set_retrieve(trv_state->mem_ctx,
+ &key, &val, &sc_set);
+ if (!NT_STATUS_IS_OK(status)) {
+ return -1;
+ }
+ DLIST_ADD_END(trv_state->sc_sets, sc_set);
+ trv_state->sc_sets_count++;
+ } else {
+ /* global context and db vers */
+ DEBUG(4, ("Ignoring fss srv db entry with key %s\n", key.dptr));
+ }
+
+ return 0;
+}
+
+static bool fss_state_smap_is_child(struct fss_sc *sc,
+ struct fss_sc_smap *smap)
+{
+ return (strstr(smap->sc_share_name, sc->id_str) != NULL);
+}
+
+static NTSTATUS fss_state_hierarchize_smaps(struct fss_traverse_state *trv_state,
+ struct fss_sc *sc)
+{
+ struct fss_sc_smap *smap;
+ struct fss_sc_smap *smap_n;
+ uint32_t smaps_moved = 0;
+
+ for (smap = trv_state->smaps; smap; smap = smap_n) {
+ smap_n = smap->next;
+ if (!fss_state_smap_is_child(sc, smap))
+ continue;
+
+ /* smap mem should be owned by parent sc */
+ talloc_steal(sc, smap);
+ DLIST_REMOVE(trv_state->smaps, smap);
+ trv_state->smaps_count--;
+ DLIST_ADD_END(sc->smaps, smap);
+ smaps_moved++;
+
+ /* last component of the tdb key path is the sc share name */
+ SMB_ASSERT(strrchr(smap->sc_share_name, '/') != NULL);
+ smap->sc_share_name = strrchr(smap->sc_share_name, '/') + 1;
+ }
+
+ if (sc->smaps_count != smaps_moved) {
+ DEBUG(0, ("Inconsistent smaps_count, expected %u, moved %u\n",
+ sc->smaps_count, smaps_moved));
+ return NT_STATUS_UNSUCCESSFUL;
+ }
+
+ return NT_STATUS_OK;
+}
+
+static bool fss_state_sc_is_child(struct fss_sc_set *sc_set,
+ struct fss_sc *sc)
+{
+ return (strstr(sc->id_str, sc_set->id_str) != NULL);
+}
+
+static NTSTATUS fss_state_hierarchize_scs(struct fss_traverse_state *trv_state,
+ struct fss_sc_set *sc_set)
+{
+ NTSTATUS status;
+ struct fss_sc *sc;
+ struct fss_sc *sc_n;
+ uint32_t scs_moved = 0;
+
+ for (sc = trv_state->scs; sc; sc = sc_n) {
+ sc_n = sc->next;
+ if (!fss_state_sc_is_child(sc_set, sc))
+ continue;
+
+ /* sc mem should be owned by parent sc_set */
+ talloc_steal(sc_set, sc);
+ DLIST_REMOVE(trv_state->scs, sc);
+ trv_state->scs_count--;
+ DLIST_ADD_END(sc_set->scs, sc);
+ scs_moved++;
+
+ sc->sc_set = sc_set;
+
+ /* last component of the tdb key path is the sc GUID str */
+ SMB_ASSERT(strrchr(sc->id_str, '/') != NULL);
+ sc->id_str = strrchr(sc->id_str, '/') + 1;
+
+ status = GUID_from_string(sc->id_str, &sc->id);
+ if (!NT_STATUS_IS_OK(status)) {
+ goto err_out;
+ }
+
+ status = fss_state_hierarchize_smaps(trv_state, sc);
+ if (!NT_STATUS_IS_OK(status)) {
+ goto err_out;
+ }
+ }
+
+ if (sc_set->scs_count != scs_moved) {
+ DEBUG(0, ("Inconsistent scs_count, expected %u, moved %u\n",
+ sc_set->scs_count, scs_moved));
+ status = NT_STATUS_UNSUCCESSFUL;
+ goto err_out;
+ }
+
+ return NT_STATUS_OK;
+
+err_out:
+ return status;
+}
+
+static NTSTATUS fss_state_hierarchize(struct fss_traverse_state *trv_state,
+ struct fss_sc_set **sc_sets,
+ uint32_t *sc_sets_count)
+{
+ NTSTATUS status;
+ struct fss_sc_set *sc_set;
+ struct fss_sc_set *sc_set_n;
+ uint32_t i = 0;
+
+ *sc_sets = NULL;
+ for (sc_set = trv_state->sc_sets; sc_set; sc_set = sc_set_n) {
+ sc_set_n = sc_set->next;
+ /* sc_set mem already owned by trv_state->mem_ctx */
+ DLIST_REMOVE(trv_state->sc_sets, sc_set);
+ trv_state->sc_sets_count--;
+ DLIST_ADD_END(*sc_sets, sc_set);
+ i++;
+
+ /* last component of the tdb key path is the sc_set GUID str */
+ SMB_ASSERT(strrchr(sc_set->id_str, '/') != NULL);
+ sc_set->id_str = strrchr(sc_set->id_str, '/') + 1;
+
+ status = GUID_from_string(sc_set->id_str, &sc_set->id);
+ if (!NT_STATUS_IS_OK(status)) {
+ goto err_out;
+ }
+
+ status = fss_state_hierarchize_scs(trv_state, sc_set);
+ if (!NT_STATUS_IS_OK(status)) {
+ goto err_out;
+ }
+ }
+ *sc_sets_count = i;
+ return NT_STATUS_OK;
+
+err_out:
+ return status;
+}
+
+_PRIVATE_ NTSTATUS fss_state_retrieve(TALLOC_CTX *mem_ctx,
+ struct fss_sc_set **sc_sets,
+ uint32_t *sc_sets_count,
+ const char *db_path)
+{
+ struct db_context *db;
+ NTSTATUS status;
+ struct fss_traverse_state trv_state;
+ int err;
+ int rec_count;
+ int vers;
+ *sc_sets = NULL;
+ *sc_sets_count = 0;
+
+ memset(&trv_state, 0, sizeof(trv_state));
+ trv_state.mem_ctx = talloc_new(mem_ctx);
+ if (trv_state.mem_ctx == NULL) {
+ status = NT_STATUS_NO_MEMORY;
+ goto err_out;
+ }
+
+ /* set callbacks for unmarshalling on-disk structures */
+ trv_state.smap_retrieve = fss_state_smap_retrieve;
+ trv_state.sc_retrieve = fss_state_sc_retrieve;
+ trv_state.sc_set_retrieve = fss_state_sc_set_retrieve;
+
+ db = db_open(trv_state.mem_ctx, db_path, 0, TDB_DEFAULT,
+ O_RDONLY, 0600, DBWRAP_LOCK_ORDER_1, DBWRAP_FLAG_NONE);
+ err = errno;
+ if ((db == NULL) && (err == ENOENT)) {
+ DEBUG(4, ("fss state TDB does not exist for retrieval\n"));
+ status = NT_STATUS_OK;
+ goto err_ts_free;
+ } else if (db == NULL) {
+ DEBUG(0, ("Failed to open fss state TDB: %s\n",
+ strerror(err)));
+ status = NT_STATUS_ACCESS_DENIED;
+ goto err_ts_free;
+ }
+
+ status = dbwrap_fetch_int32_bystring(db, FSS_DB_KEY_VERSION,
+ &vers);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, ("failed to fetch version from fss state tdb: %s\n",
+ nt_errstr(status)));
+ goto err_db_free;
+ } else if (vers != FSRVP_STATE_DB_VERSION) {
+ DEBUG(0, ("Unsupported fss tdb version %d, expected %d\n",
+ vers, FSRVP_STATE_DB_VERSION));
+ status = NT_STATUS_UNSUCCESSFUL;
+ goto err_db_free;
+ }
+
+ status = dbwrap_traverse_read(db,
+ fss_state_retrieve_traverse,
+ &trv_state,
+ &rec_count);
+ if (!NT_STATUS_IS_OK(status)) {
+ goto err_db_free;
+ }
+
+ status = fss_state_hierarchize(&trv_state, sc_sets, sc_sets_count);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, ("Failed to form fss state hierarchy\n"));
+ goto err_db_free;
+ }
+
+ /* check whether anything was left without a parent */
+ if (trv_state.sc_sets_count != 0) {
+ DEBUG(0, ("%d shadow copy set orphans in %s tdb\n",
+ trv_state.sc_sets_count, db_path));
+ status = NT_STATUS_UNSUCCESSFUL;
+ goto err_db_free;
+ }
+ if (trv_state.scs_count != 0) {
+ DEBUG(0, ("%d shadow copy orphans in %s tdb\n",
+ trv_state.scs_count, db_path));
+ status = NT_STATUS_UNSUCCESSFUL;
+ goto err_db_free;
+ }
+ if (trv_state.smaps_count != 0) {
+ DEBUG(0, ("%d share map orphans in %s tdb\n",
+ trv_state.smaps_count, db_path));
+ status = NT_STATUS_UNSUCCESSFUL;
+ goto err_db_free;
+ }
+ talloc_free(db);
+
+ return NT_STATUS_OK;
+
+err_db_free:
+ talloc_free(db);
+err_ts_free:
+ talloc_free(trv_state.mem_ctx);
+err_out:
+ return status;
+}