/* Unix SMB/CIFS implementation. idmap TDB2 backend, used for clustered Samba setups. This uses 2 tdb files. One is permanent, and is in shared storage on the cluster (using "tdb:idmap2.tdb =" in smb.conf). The other is a temporary cache tdb on local storage. Copyright (C) Andrew Tridgell 2007 This is heavily based upon idmap_tdb.c, which is: Copyright (C) Tim Potter 2000 Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2003 Copyright (C) Jeremy Allison 2006 Copyright (C) Simo Sorce 2003-2006 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 2 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, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include "includes.h" #include "winbindd.h" #undef DBGC_CLASS #define DBGC_CLASS DBGC_IDMAP /* High water mark keys */ #define HWM_GROUP "GROUP HWM" #define HWM_USER "USER HWM" static struct idmap_tdb2_state { /* User and group id pool */ uid_t low_uid, high_uid; /* Range of uids to allocate */ gid_t low_gid, high_gid; /* Range of gids to allocate */ const char *idmap_script; } idmap_tdb2_state; /* tdb context for the local cache tdb */ static TDB_CONTEXT *idmap_tdb2_tmp; /* handle to the permanent tdb */ static struct db_context *idmap_tdb2_perm; /* open the cache tdb */ static NTSTATUS idmap_tdb2_open_cache_db(void) { const char *db_path; if (idmap_tdb2_tmp) { /* its already open */ return NT_STATUS_OK; } db_path = lock_path("idmap2_cache.tdb"); /* Open idmap repository */ if (!(idmap_tdb2_tmp = tdb_open_log(db_path, 0, TDB_CLEAR_IF_FIRST, O_RDWR|O_CREAT, 0644))) { DEBUG(0, ("Unable to open cache idmap database '%s'\n", db_path)); return NT_STATUS_UNSUCCESSFUL; } return NT_STATUS_OK; } static NTSTATUS idmap_tdb2_alloc_load(void); /* open the permanent tdb */ static NTSTATUS idmap_tdb2_open_perm_db(void) { char *db_path; if (idmap_tdb2_perm) { /* its already open */ return NT_STATUS_OK; } db_path = lp_parm_talloc_string(-1, "tdb", "idmap2.tdb", NULL); if (db_path == NULL) { /* fall back to the private directory, which, despite its name, is usually on shared storage */ db_path = talloc_asprintf(NULL, "%s/idmap2.tdb", lp_private_dir()); } NT_STATUS_HAVE_NO_MEMORY(db_path); /* Open idmap repository */ idmap_tdb2_perm = db_open(NULL, db_path, 0, TDB_DEFAULT, O_RDWR|O_CREAT, 0644); TALLOC_FREE(db_path); if (idmap_tdb2_perm == NULL) { DEBUG(0, ("Unable to open permanent idmap database '%s'\n", db_path)); return NT_STATUS_UNSUCCESSFUL; } /* load the ranges and high/low water marks */ return idmap_tdb2_alloc_load(); } /* load the idmap allocation ranges and high/low water marks */ static NTSTATUS idmap_tdb2_alloc_load(void) { const char *range; uid_t low_uid = 0; uid_t high_uid = 0; gid_t low_gid = 0; gid_t high_gid = 0; /* load ranges */ idmap_tdb2_state.low_uid = 0; idmap_tdb2_state.high_uid = 0; idmap_tdb2_state.low_gid = 0; idmap_tdb2_state.high_gid = 0; /* see if a idmap script is configured */ idmap_tdb2_state.idmap_script = lp_parm_const_string(-1, "idmap", "script", NULL); if (idmap_tdb2_state.idmap_script) { DEBUG(1, ("using idmap script '%s'\n", idmap_tdb2_state.idmap_script)); } range = lp_parm_const_string(-1, "idmap alloc config", "range", NULL); if (range && range[0]) { unsigned low_id, high_id; if (sscanf(range, "%u - %u", &low_id, &high_id) == 2) { if (low_id < high_id) { idmap_tdb2_state.low_gid = idmap_tdb2_state.low_uid = low_id; idmap_tdb2_state.high_gid = idmap_tdb2_state.high_uid = high_id; } else { DEBUG(1, ("ERROR: invalid idmap alloc range [%s]", range)); } } else { DEBUG(1, ("ERROR: invalid syntax for idmap alloc config:range [%s]", range)); } } /* Create high water marks for group and user id */ if (lp_idmap_uid(&low_uid, &high_uid)) { idmap_tdb2_state.low_uid = low_uid; idmap_tdb2_state.high_uid = high_uid; } if (lp_idmap_gid(&low_gid, &high_gid)) { idmap_tdb2_state.low_gid = low_gid; idmap_tdb2_state.high_gid = high_gid; } if (idmap_tdb2_state.high_uid <= idmap_tdb2_state.low_uid) { DEBUG(1, ("idmap uid range missing or invalid\n")); DEBUGADD(1, ("idmap will be unable to map foreign SIDs\n")); return NT_STATUS_UNSUCCESSFUL; } else { uint32 low_id; if (((low_id = dbwrap_fetch_int32(idmap_tdb2_perm, HWM_USER)) == -1) || (low_id < idmap_tdb2_state.low_uid)) { if (dbwrap_store_int32( idmap_tdb2_perm, HWM_USER, idmap_tdb2_state.low_uid) == -1) { DEBUG(0, ("Unable to initialise user hwm in idmap database\n")); return NT_STATUS_INTERNAL_DB_ERROR; } } } if (idmap_tdb2_state.high_gid <= idmap_tdb2_state.low_gid) { DEBUG(1, ("idmap gid range missing or invalid\n")); DEBUGADD(1, ("idmap will be unable to map foreign SIDs\n")); return NT_STATUS_UNSUCCESSFUL; } else { uint32 low_id; if (((low_id = dbwrap_fetch_int32(idmap_tdb2_perm, HWM_GROUP)) == -1) || (low_id < idmap_tdb2_state.low_gid)) { if (dbwrap_store_int32( idmap_tdb2_perm, HWM_GROUP, idmap_tdb2_state.low_gid) == -1) { DEBUG(0, ("Unable to initialise group hwm in idmap database\n")); return NT_STATUS_INTERNAL_DB_ERROR; } } } return NT_STATUS_OK; } /* Initialise idmap alloc database. */ static NTSTATUS idmap_tdb2_alloc_init(const char *params) { /* nothing to do - we want to avoid opening the permanent database if possible. Instead we load the params when we first need it. */ return NT_STATUS_OK; } /* Allocate a new id. */ static NTSTATUS idmap_tdb2_allocate_id(struct unixid *xid) { bool ret; const char *hwmkey; const char *hwmtype; uint32_t high_hwm; uint32_t hwm; NTSTATUS status; status = idmap_tdb2_open_perm_db(); NT_STATUS_NOT_OK_RETURN(status); /* Get current high water mark */ switch (xid->type) { case ID_TYPE_UID: hwmkey = HWM_USER; hwmtype = "UID"; high_hwm = idmap_tdb2_state.high_uid; break; case ID_TYPE_GID: hwmkey = HWM_GROUP; hwmtype = "GID"; high_hwm = idmap_tdb2_state.high_gid; break; default: DEBUG(2, ("Invalid ID type (0x%x)\n", xid->type)); return NT_STATUS_INVALID_PARAMETER; } if ((hwm = dbwrap_fetch_int32(idmap_tdb2_perm, hwmkey)) == -1) { return NT_STATUS_INTERNAL_DB_ERROR; } /* check it is in the range */ if (hwm > high_hwm) { DEBUG(1, ("Fatal Error: %s range full!! (max: %lu)\n", hwmtype, (unsigned long)high_hwm)); return NT_STATUS_UNSUCCESSFUL; } /* fetch a new id and increment it */ ret = dbwrap_change_uint32_atomic(idmap_tdb2_perm, hwmkey, &hwm, 1); if (ret == -1) { DEBUG(1, ("Fatal error while fetching a new %s value\n!", hwmtype)); return NT_STATUS_UNSUCCESSFUL; } /* recheck it is in the range */ if (hwm > high_hwm) { DEBUG(1, ("Fatal Error: %s range full!! (max: %lu)\n", hwmtype, (unsigned long)high_hwm)); return NT_STATUS_UNSUCCESSFUL; } xid->id = hwm; DEBUG(10,("New %s = %d\n", hwmtype, hwm)); return NT_STATUS_OK; } /* Get current highest id. */ static NTSTATUS idmap_tdb2_get_hwm(struct unixid *xid) { const char *hwmkey; const char *hwmtype; uint32_t hwm; uint32_t high_hwm; /* Get current high water mark */ switch (xid->type) { case ID_TYPE_UID: hwmkey = HWM_USER; hwmtype = "UID"; high_hwm = idmap_tdb2_state.high_uid; break; case ID_TYPE_GID: hwmkey = HWM_GROUP; hwmtype = "GID"; high_hwm = idmap_tdb2_state.high_gid; break; default: return NT_STATUS_INVALID_PARAMETER; } if ((hwm = dbwrap_fetch_int32(idmap_tdb2_perm, hwmkey)) == -1) { return NT_STATUS_INTERNAL_DB_ERROR; } xid->id = hwm; /* Warn if it is out of range */ if (hwm >= high_hwm) { DEBUG(0, ("Warning: %s range full!! (max: %lu)\n", hwmtype, (unsigned long)high_hwm)); } return NT_STATUS_OK; } /* Set high id. */ static NTSTATUS idmap_tdb2_set_hwm(struct unixid *xid) { /* not supported, or we would invalidate the cache tdb on other nodes */ DEBUG(0,("idmap_tdb2_set_hwm not supported\n")); return NT_STATUS_NOT_SUPPORTED; } /* Close the alloc tdb */ static NTSTATUS idmap_tdb2_alloc_close(void) { /* don't actually close it */ return NT_STATUS_OK; } /* IDMAP MAPPING TDB BACKEND */ struct idmap_tdb2_context { uint32_t filter_low_id; uint32_t filter_high_id; }; /* try fetching from the cache tdb, and if that fails then fetch from the permanent tdb */ static TDB_DATA tdb2_fetch_bystring(TALLOC_CTX *mem_ctx, const char *keystr) { TDB_DATA ret; NTSTATUS status; ret = tdb_fetch_bystring(idmap_tdb2_tmp, keystr); if (ret.dptr != NULL) { /* got it from cache */ unsigned char *tmp; tmp = (unsigned char *)talloc_memdup(mem_ctx, ret.dptr, ret.dsize); SAFE_FREE(ret.dptr); ret.dptr = tmp; if (ret.dptr == NULL) { return make_tdb_data(NULL, 0); } return ret; } status = idmap_tdb2_open_perm_db(); if (!NT_STATUS_IS_OK(status)) { return ret; } /* fetch from the permanent tdb */ return dbwrap_fetch_bystring(idmap_tdb2_perm, mem_ctx, keystr); } /* store into both databases */ static NTSTATUS tdb2_store_bystring(const char *keystr, TDB_DATA data, int flags) { NTSTATUS ret; NTSTATUS status = idmap_tdb2_open_perm_db(); if (!NT_STATUS_IS_OK(status)) { return NT_STATUS_UNSUCCESSFUL; } ret = dbwrap_store_bystring(idmap_tdb2_perm, keystr, data, flags); if (!NT_STATUS_IS_OK(ret)) { ret = tdb_store_bystring(idmap_tdb2_tmp, keystr, data, flags) ? NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL; } return ret; } /* delete from both databases */ static NTSTATUS tdb2_delete_bystring(const char *keystr) { NTSTATUS ret; NTSTATUS status = idmap_tdb2_open_perm_db(); if (!NT_STATUS_IS_OK(status)) { return NT_STATUS_UNSUCCESSFUL; } ret = dbwrap_delete_bystring(idmap_tdb2_perm, keystr); if (!NT_STATUS_IS_OK(ret)) { ret = tdb_delete_bystring(idmap_tdb2_tmp, keystr) ? NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL; } return ret; } /* Initialise idmap database. */ static NTSTATUS idmap_tdb2_db_init(struct idmap_domain *dom) { NTSTATUS ret; struct idmap_tdb2_context *ctx; char *config_option = NULL; const char *range; NTSTATUS status; status = idmap_tdb2_open_cache_db(); NT_STATUS_NOT_OK_RETURN(status); ctx = talloc(dom, struct idmap_tdb2_context); if ( ! ctx) { DEBUG(0, ("Out of memory!\n")); return NT_STATUS_NO_MEMORY; } config_option = talloc_asprintf(ctx, "idmap config %s", dom->name); if ( ! config_option) { DEBUG(0, ("Out of memory!\n")); ret = NT_STATUS_NO_MEMORY; goto failed; } range = lp_parm_const_string(-1, config_option, "range", NULL); if (( ! range) || (sscanf(range, "%u - %u", &ctx->filter_low_id, &ctx->filter_high_id) != 2) || (ctx->filter_low_id > ctx->filter_high_id)) { ctx->filter_low_id = 0; ctx->filter_high_id = 0; } dom->private_data = ctx; dom->initialized = True; talloc_free(config_option); return NT_STATUS_OK; failed: talloc_free(ctx); return ret; } /* run a script to perform a mapping The script should the following command lines: SIDTOID S-1-xxxx IDTOSID UID xxxx IDTOSID GID xxxx and should return one of the following as a single line of text UID:xxxx GID:xxxx SID:xxxx ERR:xxxx */ static NTSTATUS idmap_tdb2_script(struct idmap_tdb2_context *ctx, struct id_map *map, const char *fmt, ...) { va_list ap; char *cmd; FILE *p; char line[64]; unsigned long v; cmd = talloc_asprintf(ctx, "%s ", idmap_tdb2_state.idmap_script); NT_STATUS_HAVE_NO_MEMORY(cmd); va_start(ap, fmt); cmd = talloc_vasprintf_append(cmd, fmt, ap); va_end(ap); NT_STATUS_HAVE_NO_MEMORY(cmd); p = popen(cmd, "r"); talloc_free(cmd); if (p == NULL) { return NT_STATUS_NONE_MAPPED; } if (fgets(line, sizeof(line)-1, p) == NULL) { pclose(p); return NT_STATUS_NONE_MAPPED; } pclose(p); DEBUG(10,("idmap script gave: %s\n", line)); if (sscanf(line, "UID:%lu", &v) == 1) { map->xid.id = v; map->xid.type = ID_TYPE_UID; } else if (sscanf(line, "GID:%lu", &v) == 1) { map->xid.id = v; map->xid.type = ID_TYPE_GID; } else if (strncmp(line, "SID:S-", 6) == 0) { if (!string_to_sid(map->sid, &line[4])) { DEBUG(0,("Bad SID in '%s' from idmap script %s\n", line, idmap_tdb2_state.idmap_script)); return NT_STATUS_NONE_MAPPED; } } else { DEBUG(0,("Bad reply '%s' from idmap script %s\n", line, idmap_tdb2_state.idmap_script)); return NT_STATUS_NONE_MAPPED; } return NT_STATUS_OK; } /* Single id to sid lookup function. */ static NTSTATUS idmap_tdb2_id_to_sid(struct idmap_tdb2_context *ctx, struct id_map *map) { NTSTATUS ret; TDB_DATA data; char *keystr; if (!ctx || !map) { return NT_STATUS_INVALID_PARAMETER; } /* apply filters before checking */ if ((ctx->filter_low_id && (map->xid.id < ctx->filter_low_id)) || (ctx->filter_high_id && (map->xid.id > ctx->filter_high_id))) { DEBUG(5, ("Requested id (%u) out of range (%u - %u). Filtered!\n", map->xid.id, ctx->filter_low_id, ctx->filter_high_id)); return NT_STATUS_NONE_MAPPED; } switch (map->xid.type) { case ID_TYPE_UID: keystr = talloc_asprintf(ctx, "UID %lu", (unsigned long)map->xid.id); break; case ID_TYPE_GID: keystr = talloc_asprintf(ctx, "GID %lu", (unsigned long)map->xid.id); break; default: DEBUG(2, ("INVALID unix ID type: 0x02%x\n", map->xid.type)); return NT_STATUS_INVALID_PARAMETER; } /* final SAFE_FREE safe */ data.dptr = NULL; if (keystr == NULL) { DEBUG(0, ("Out of memory!\n")); ret = NT_STATUS_NO_MEMORY; goto done; } DEBUG(10,("Fetching record %s\n", keystr)); /* Check if the mapping exists */ data = tdb2_fetch_bystring(keystr, keystr); if (!data.dptr) { fstring sidstr; DEBUG(10,("Record %s not found\n", keystr)); if (idmap_tdb2_state.idmap_script == NULL) { ret = NT_STATUS_NONE_MAPPED; goto done; } ret = idmap_tdb2_script(ctx, map, "IDTOSID %s", keystr); /* store it on shared storage */ if (!NT_STATUS_IS_OK(ret)) { goto done; } if (sid_to_fstring(sidstr, map->sid)) { /* both forward and reverse mappings */ tdb2_store_bystring(keystr, string_term_tdb_data(sidstr), TDB_REPLACE); tdb2_store_bystring(sidstr, string_term_tdb_data(keystr), TDB_REPLACE); } goto done; } if (!string_to_sid(map->sid, (const char *)data.dptr)) { DEBUG(10,("INVALID SID (%s) in record %s\n", (const char *)data.dptr, keystr)); ret = NT_STATUS_INTERNAL_DB_ERROR; goto done; } DEBUG(10,("Found record %s -> %s\n", keystr, (const char *)data.dptr)); ret = NT_STATUS_OK; done: talloc_free(keystr); return ret; } /* Single sid to id lookup function. */ static NTSTATUS idmap_tdb2_sid_to_id(struct idmap_tdb2_context *ctx, struct id_map *map) { NTSTATUS ret; TDB_DATA data; char *keystr; unsigned long rec_id = 0; if ((keystr = sid_string_talloc(ctx, map->sid)) == NULL) { DEBUG(0, ("Out of memory!\n")); ret = NT_STATUS_NO_MEMORY; goto done; } DEBUG(10,("Fetching record %s\n", keystr)); /* Check if sid is present in database */ data = tdb2_fetch_bystring(keystr, keystr); if (!data.dptr) { fstring idstr; DEBUG(10,(__location__ " Record %s not found\n", keystr)); if (idmap_tdb2_state.idmap_script == NULL) { ret = NT_STATUS_NONE_MAPPED; goto done; } ret = idmap_tdb2_script(ctx, map, "SIDTOID %s", keystr); /* store it on shared storage */ if (!NT_STATUS_IS_OK(ret)) { goto done; } snprintf(idstr, sizeof(idstr), "%cID %lu", map->xid.type == ID_TYPE_UID?'U':'G', (unsigned long)map->xid.id); /* store both forward and reverse mappings */ tdb2_store_bystring(keystr, string_term_tdb_data(idstr), TDB_REPLACE); tdb2_store_bystring(idstr, string_term_tdb_data(keystr), TDB_REPLACE); goto done; } /* What type of record is this ? */ if (sscanf((const char *)data.dptr, "UID %lu", &rec_id) == 1) { /* Try a UID record. */ map->xid.id = rec_id; map->xid.type = ID_TYPE_UID; DEBUG(10,("Found uid record %s -> %s \n", keystr, (const char *)data.dptr )); ret = NT_STATUS_OK; } else if (sscanf((const char *)data.dptr, "GID %lu", &rec_id) == 1) { /* Try a GID record. */ map->xid.id = rec_id; map->xid.type = ID_TYPE_GID; DEBUG(10,("Found gid record %s -> %s \n", keystr, (const char *)data.dptr )); ret = NT_STATUS_OK; } else { /* Unknown record type ! */ DEBUG(2, ("Found INVALID record %s -> %s\n", keystr, (const char *)data.dptr)); ret = NT_STATUS_INTERNAL_DB_ERROR; } /* apply filters before returning result */ if ((ctx->filter_low_id && (map->xid.id < ctx->filter_low_id)) || (ctx->filter_high_id && (map->xid.id > ctx->filter_high_id))) { DEBUG(5, ("Requested id (%u) out of range (%u - %u). Filtered!\n", map->xid.id, ctx->filter_low_id, ctx->filter_high_id)); ret = NT_STATUS_NONE_MAPPED; } done: talloc_free(keystr); return ret; } /* lookup a set of unix ids. */ static NTSTATUS idmap_tdb2_unixids_to_sids(struct idmap_domain *dom, struct id_map **ids) { struct idmap_tdb2_context *ctx; NTSTATUS ret; int i; /* make sure we initialized */ if ( ! dom->initialized) { ret = idmap_tdb2_db_init(dom); if ( ! NT_STATUS_IS_OK(ret)) { return ret; } } ctx = talloc_get_type(dom->private_data, struct idmap_tdb2_context); for (i = 0; ids[i]; i++) { ret = idmap_tdb2_id_to_sid(ctx, ids[i]); if ( ! NT_STATUS_IS_OK(ret)) { /* if it is just a failed mapping continue */ if (NT_STATUS_EQUAL(ret, NT_STATUS_NONE_MAPPED)) { /* make sure it is marked as unmapped */ ids[i]->status = ID_UNMAPPED; continue; } /* some fatal error occurred, return immediately */ goto done; } /* all ok, id is mapped */ ids[i]->status = ID_MAPPED; } ret = NT_STATUS_OK; done: return ret; } /* lookup a set of sids. */ static NTSTATUS idmap_tdb2_sids_to_unixids(struct idmap_domain *dom, struct id_map **ids) { struct idmap_tdb2_context *ctx; NTSTATUS ret; int i; /* make sure we initialized */ if ( ! dom->initialized) { ret = idmap_tdb2_db_init(dom); if ( ! NT_STATUS_IS_OK(ret)) { return ret; } } ctx = talloc_get_type(dom->private_data, struct idmap_tdb2_context); for (i = 0; ids[i]; i++) { ret = idmap_tdb2_sid_to_id(ctx, ids[i]); if ( ! NT_STATUS_IS_OK(ret)) { /* if it is just a failed mapping continue */ if (NT_STATUS_EQUAL(ret, NT_STATUS_NONE_MAPPED)) { /* make sure it is marked as unmapped */ ids[i]->status = ID_UNMAPPED; continue; } /* some fatal error occurred, return immediately */ goto done; } /* all ok, id is mapped */ ids[i]->status = ID_MAPPED; } ret = NT_STATUS_OK; done: return ret; } /* set a mapping. */ static NTSTATUS idmap_tdb2_set_mapping(struct idmap_domain *dom, const struct id_map *map) { struct idmap_tdb2_context *ctx; NTSTATUS ret; TDB_DATA data; char *ksidstr, *kidstr; struct db_record *update_lock = NULL; struct db_record *rec = NULL; /* make sure we initialized */ if ( ! dom->initialized) { ret = idmap_tdb2_db_init(dom); if ( ! NT_STATUS_IS_OK(ret)) { return ret; } } if (!map || !map->sid) { return NT_STATUS_INVALID_PARAMETER; } ksidstr = kidstr = NULL; data.dptr = NULL; /* TODO: should we filter a set_mapping using low/high filters ? */ ctx = talloc_get_type(dom->private_data, struct idmap_tdb2_context); switch (map->xid.type) { case ID_TYPE_UID: kidstr = talloc_asprintf(ctx, "UID %lu", (unsigned long)map->xid.id); break; case ID_TYPE_GID: kidstr = talloc_asprintf(ctx, "GID %lu", (unsigned long)map->xid.id); break; default: DEBUG(2, ("INVALID unix ID type: 0x02%x\n", map->xid.type)); return NT_STATUS_INVALID_PARAMETER; } if (kidstr == NULL) { DEBUG(0, ("ERROR: Out of memory!\n")); ret = NT_STATUS_NO_MEMORY; goto done; } if (!(ksidstr = sid_string_talloc(ctx, map->sid))) { DEBUG(0, ("Out of memory!\n")); ret = NT_STATUS_NO_MEMORY; goto done; } DEBUG(10, ("Storing %s <-> %s map\n", ksidstr, kidstr)); /* * Get us the update lock. This is necessary to get the lock orders * right, we need to deal with two records under a lock. */ if (!(update_lock = idmap_tdb2_perm->fetch_locked( idmap_tdb2_perm, ctx, string_term_tdb_data("UPDATELOCK")))) { DEBUG(10,("Failed to lock record %s\n", ksidstr)); ret = NT_STATUS_UNSUCCESSFUL; goto done; } /* * *DELETE* previous mappings if any. * */ /* First delete indexed on SID */ if (((rec = idmap_tdb2_perm->fetch_locked( idmap_tdb2_perm, update_lock, string_term_tdb_data(ksidstr))) != NULL) && (rec->value.dsize != 0)) { struct db_record *rec2; if ((rec2 = idmap_tdb2_perm->fetch_locked( idmap_tdb2_perm, update_lock, rec->value)) != NULL) { rec2->delete_rec(rec2); TALLOC_FREE(rec2); } rec->delete_rec(rec); tdb_delete(idmap_tdb2_tmp, rec->key); tdb_delete(idmap_tdb2_tmp, rec->value); } TALLOC_FREE(rec); /* Now delete indexed on unix ID */ if (((rec = idmap_tdb2_perm->fetch_locked( idmap_tdb2_perm, update_lock, string_term_tdb_data(kidstr))) != NULL) && (rec->value.dsize != 0)) { struct db_record *rec2; if ((rec2 = idmap_tdb2_perm->fetch_locked( idmap_tdb2_perm, update_lock, rec->value)) != NULL) { rec2->delete_rec(rec2); TALLOC_FREE(rec2); } rec->delete_rec(rec); tdb_delete(idmap_tdb2_tmp, rec->key); tdb_delete(idmap_tdb2_tmp, rec->value); } TALLOC_FREE(rec); if (!NT_STATUS_IS_OK(tdb2_store_bystring(ksidstr, string_term_tdb_data(kidstr), TDB_INSERT))) { DEBUG(0, ("Error storing SID -> ID\n")); ret = NT_STATUS_UNSUCCESSFUL; goto done; } if (!NT_STATUS_IS_OK(tdb2_store_bystring(kidstr, string_term_tdb_data(ksidstr), TDB_INSERT))) { DEBUG(0, ("Error storing ID -> SID\n")); /* try to remove the previous stored SID -> ID map */ tdb2_delete_bystring(ksidstr); ret = NT_STATUS_UNSUCCESSFUL; goto done; } DEBUG(10,("Stored %s <-> %s\n", ksidstr, kidstr)); ret = NT_STATUS_OK; done: talloc_free(ksidstr); talloc_free(kidstr); SAFE_FREE(data.dptr); TALLOC_FREE(update_lock); return ret; } /* remove a mapping. */ static NTSTATUS idmap_tdb2_remove_mapping(struct idmap_domain *dom, const struct id_map *map) { /* not supported as it would invalidate the cache tdb on other nodes */ DEBUG(0,("idmap_tdb2_remove_mapping not supported\n")); return NT_STATUS_NOT_SUPPORTED; } /* Close the idmap tdb instance */ static NTSTATUS idmap_tdb2_close(struct idmap_domain *dom) { /* don't do anything */ return NT_STATUS_OK; } /* Dump all mappings out */ static NTSTATUS idmap_tdb2_dump_data(struct idmap_domain *dom, struct id_map **maps, int *num_maps) { DEBUG(0,("idmap_tdb2_dump_data not supported\n")); return NT_STATUS_NOT_SUPPORTED; } static struct idmap_methods db_methods = { .init = idmap_tdb2_db_init, .unixids_to_sids = idmap_tdb2_unixids_to_sids, .sids_to_unixids = idmap_tdb2_sids_to_unixids, .set_mapping = idmap_tdb2_set_mapping, .remove_mapping = idmap_tdb2_remove_mapping, .dump_data = idmap_tdb2_dump_data, .close_fn = idmap_tdb2_close }; static struct idmap_alloc_methods db_alloc_methods = { .init = idmap_tdb2_alloc_init, .allocate_id = idmap_tdb2_allocate_id, .get_id_hwm = idmap_tdb2_get_hwm, .set_id_hwm = idmap_tdb2_set_hwm, .close_fn = idmap_tdb2_alloc_close }; NTSTATUS idmap_tdb2_init(void) { NTSTATUS ret; /* register both backends */ ret = smb_register_idmap_alloc(SMB_IDMAP_INTERFACE_VERSION, "tdb2", &db_alloc_methods); if (! NT_STATUS_IS_OK(ret)) { DEBUG(0, ("Unable to register idmap alloc tdb2 module: %s\n", get_friendly_nt_error_msg(ret))); return ret; } return smb_register_idmap(SMB_IDMAP_INTERFACE_VERSION, "tdb2", &db_methods); }