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.
+ This uses dbwrap to access tdb files. The location can be set
+ using tdb:idmap2.tdb =" in smb.conf
Copyright (C) Andrew Tridgell 2007
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.
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_IDMAP
+struct idmap_tdb2_context {
+ uint32_t filter_low_id;
+ uint32_t filter_high_id;
+ const char *script; /* script to provide idmaps */
+};
+
/* High water mark keys */
#define HWM_GROUP "GROUP HWM"
#define HWM_USER "USER HWM"
/* 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;
+static NTSTATUS idmap_tdb2_new_mapping(struct idmap_domain *dom,
+ struct id_map *map);
/* handle to the permanent tdb */
-static struct db_context *idmap_tdb2_perm;
+static struct db_context *idmap_tdb2;
-/*
- open the cache tdb
- */
-static NTSTATUS idmap_tdb2_open_cache_db(void)
+static NTSTATUS idmap_tdb2_alloc_load(void);
+
+static NTSTATUS idmap_tdb2_load_ranges(void)
{
- const char *db_path;
+ uid_t low_uid = 0;
+ uid_t high_uid = 0;
+ gid_t low_gid = 0;
+ gid_t high_gid = 0;
- if (idmap_tdb2_tmp) {
- /* its already open */
- return NT_STATUS_OK;
+ if (!lp_idmap_uid(&low_uid, &high_uid)) {
+ DEBUG(1, ("idmap uid missing\n"));
+ return NT_STATUS_UNSUCCESSFUL;
}
- db_path = lock_path("idmap2_cache.tdb");
+ if (!lp_idmap_gid(&low_gid, &high_gid)) {
+ DEBUG(1, ("idmap gid missing\n"));
+ return NT_STATUS_UNSUCCESSFUL;
+ }
- /* 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));
+ idmap_tdb2_state.low_uid = low_uid;
+ idmap_tdb2_state.high_uid = high_uid;
+ 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;
+ }
+
+ 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;
}
return NT_STATUS_OK;
}
-
-static NTSTATUS idmap_tdb2_alloc_load(void);
-
/*
open the permanent tdb
*/
-static NTSTATUS idmap_tdb2_open_perm_db(void)
+static NTSTATUS idmap_tdb2_open_db(void)
{
char *db_path;
-
- if (idmap_tdb2_perm) {
+
+ if (idmap_tdb2) {
/* its already open */
return NT_STATUS_OK;
}
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);
+ idmap_tdb2 = 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",
+ if (idmap_tdb2 == NULL) {
+ DEBUG(0, ("Unable to open idmap_tdb2 database '%s'\n",
db_path));
return NT_STATUS_UNSUCCESSFUL;
}
*/
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;
+ NTSTATUS status;
+ uint32 low_id;
/* 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));
- }
+ status = idmap_tdb2_load_ranges();
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
}
/* 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;
- }
+ low_id = dbwrap_fetch_int32(idmap_tdb2, HWM_USER);
+ if ((low_id == -1) || (low_id < idmap_tdb2_state.low_uid)) {
+ if (!NT_STATUS_IS_OK(dbwrap_trans_store_int32(
+ idmap_tdb2, HWM_USER,
+ idmap_tdb2_state.low_uid))) {
+ 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;
- }
+ low_id = dbwrap_fetch_int32(idmap_tdb2, HWM_GROUP);
+ if ((low_id == -1) || (low_id < idmap_tdb2_state.low_gid)) {
+ if (!NT_STATUS_IS_OK(dbwrap_trans_store_int32(
+ idmap_tdb2, HWM_GROUP,
+ idmap_tdb2_state.low_gid))) {
+ DEBUG(0, ("Unable to initialise group hwm in idmap "
+ "database\n"));
+ return NT_STATUS_INTERNAL_DB_ERROR;
}
}
}
-/*
- 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;
+
+struct idmap_tdb2_allocate_id_context {
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;
+static NTSTATUS idmap_tdb2_allocate_id_action(struct db_context *db,
+ void *private_data)
+{
+ NTSTATUS ret;
+ struct idmap_tdb2_allocate_id_context *state;
+ uint32_t hwm;
- default:
- DEBUG(2, ("Invalid ID type (0x%x)\n", xid->type));
- return NT_STATUS_INVALID_PARAMETER;
- }
+ state = (struct idmap_tdb2_allocate_id_context *)private_data;
- if ((hwm = dbwrap_fetch_int32(idmap_tdb2_perm, hwmkey)) == -1) {
- return NT_STATUS_INTERNAL_DB_ERROR;
+ hwm = dbwrap_fetch_int32(db, state->hwmkey);
+ if (hwm == -1) {
+ ret = NT_STATUS_INTERNAL_DB_ERROR;
+ goto done;
}
/* 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;
+ if (hwm > state->high_hwm) {
+ DEBUG(1, ("Fatal Error: %s range full!! (max: %lu)\n",
+ state->hwmtype, (unsigned long)state->high_hwm));
+ ret = NT_STATUS_UNSUCCESSFUL;
+ goto done;
}
/* 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;
+ ret = dbwrap_trans_change_uint32_atomic(db, state->hwmkey, &hwm, 1);
+ if (!NT_STATUS_IS_OK(ret)) {
+ DEBUG(1, ("Fatal error while fetching a new %s value\n!",
+ state->hwmtype));
+ goto done;
}
/* 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;
+ if (hwm > state->high_hwm) {
+ DEBUG(1, ("Fatal Error: %s range full!! (max: %lu)\n",
+ state->hwmtype, (unsigned long)state->high_hwm));
+ ret = NT_STATUS_UNSUCCESSFUL;
+ goto done;
}
-
- xid->id = hwm;
- DEBUG(10,("New %s = %d\n", hwmtype, hwm));
- return NT_STATUS_OK;
+ ret = NT_STATUS_OK;
+ state->hwm = hwm;
+
+done:
+ return ret;
}
-/*
- Get current highest id.
-*/
-static NTSTATUS idmap_tdb2_get_hwm(struct unixid *xid)
+static NTSTATUS idmap_tdb2_allocate_id(struct idmap_domain *dom,
+ struct unixid *xid)
{
const char *hwmkey;
const char *hwmtype;
- uint32_t hwm;
uint32_t high_hwm;
+ uint32_t hwm = 0;
+ NTSTATUS status;
+ struct idmap_tdb2_context *ctx;
+ struct idmap_tdb2_allocate_id_context state;
+
+ status = idmap_tdb2_open_db();
+ NT_STATUS_NOT_OK_RETURN(status);
+
+ ctx = talloc_get_type(dom->private_data, struct idmap_tdb2_context);
/* 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;
- }
+ high_hwm = ctx->filter_high_id;
- xid->id = hwm;
+ state.hwm = hwm;
+ state.high_hwm = high_hwm;
+ state.hwmtype = hwmtype;
+ state.hwmkey = hwmkey;
- /* 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));
- }
+ status = dbwrap_trans_do(idmap_tdb2, idmap_tdb2_allocate_id_action,
+ &state);
- 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;
-}
+ if (NT_STATUS_IS_OK(status)) {
+ xid->id = state.hwm;
+ DEBUG(10,("New %s = %d\n", hwmtype, state.hwm));
+ } else {
+ DEBUG(1, ("Error allocating a new %s\n", hwmtype));
+ }
-/*
- Close the alloc tdb
-*/
-static NTSTATUS idmap_tdb2_alloc_close(void)
-{
- /* don't actually close it */
- return NT_STATUS_OK;
+ return status;
}
-/*
- 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
+/**
+ * Allocate a new unix-ID.
+ * For now this is for the default idmap domain only.
+ * Should be extended later on.
*/
-static TDB_DATA tdb2_fetch_bystring(TALLOC_CTX *mem_ctx, const char *keystr)
+static NTSTATUS idmap_tdb2_get_new_id(struct idmap_domain *dom,
+ struct unixid *id)
{
- 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;
+ NTSTATUS ret;
- 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;
+ if (!strequal(dom->name, "*")) {
+ DEBUG(3, ("idmap_tdb2_get_new_id: "
+ "Refusing creation of mapping for domain'%s'. "
+ "Currently only supported for the default "
+ "domain \"*\".\n",
+ dom->name));
+ return NT_STATUS_NOT_IMPLEMENTED;
}
- /* fetch from the permanent tdb */
- return dbwrap_fetch_bystring(idmap_tdb2_perm, mem_ctx, keystr);
-}
+ ret = idmap_tdb2_allocate_id(dom, id);
-/*
- 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;
-}
+ IDMAP MAPPING TDB BACKEND
+*/
/*
Initialise idmap database.
*/
-static NTSTATUS idmap_tdb2_db_init(struct idmap_domain *dom)
+static NTSTATUS idmap_tdb2_db_init(struct idmap_domain *dom,
+ const char *params)
{
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;
+ if (strequal(dom->name, "*")) {
+ uid_t low_uid = 0;
+ uid_t high_uid = 0;
+ gid_t low_gid = 0;
+ gid_t high_gid = 0;
+
+ ctx->filter_low_id = 0;
+ ctx->filter_high_id = 0;
+
+ if (lp_idmap_uid(&low_uid, &high_uid)) {
+ ctx->filter_low_id = low_uid;
+ ctx->filter_high_id = high_uid;
+ } else {
+ DEBUG(3, ("Warning: 'idmap uid' not set!\n"));
+ }
+
+ if (lp_idmap_gid(&low_gid, &high_gid)) {
+ if ((low_gid != low_uid) || (high_gid != high_uid)) {
+ DEBUG(1, ("Warning: 'idmap uid' and 'idmap gid'"
+ " ranges do not agree -- building "
+ "intersection\n"));
+ ctx->filter_low_id = MAX(ctx->filter_low_id,
+ low_gid);
+ ctx->filter_high_id = MIN(ctx->filter_high_id,
+ high_gid);
+ }
+ } else {
+ DEBUG(3, ("Warning: 'idmap gid' not set!\n"));
+ }
+
+ ctx->script = lp_parm_const_string(-1, "idmap", "script", NULL);
+ if (ctx->script) {
+ DEBUG(1, ("using idmap script '%s'\n", ctx->script));
+ }
+ } else {
+ char *config_option = NULL;
+ const char *range;
+ 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 = 0;
+ ctx->filter_high_id = 0;
+ }
+
+ ctx->script = lp_parm_const_string(-1, config_option, "script", NULL);
+ if (ctx->script) {
+ DEBUG(1, ("using idmap script '%s'\n", ctx->script));
+ }
+
+ talloc_free(config_option);
}
- 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)) {
+ if (ctx->filter_low_id > ctx->filter_high_id) {
ctx->filter_low_id = 0;
ctx->filter_high_id = 0;
}
+ ret = idmap_tdb2_open_db();
+ if (!NT_STATUS_IS_OK(ret)) {
+ goto failed;
+ }
+
dom->private_data = ctx;
- dom->initialized = True;
- talloc_free(config_option);
return NT_STATUS_OK;
failed:
return ret;
}
+struct idmap_tdb2_set_mapping_context {
+ const char *ksidstr;
+ const char *kidstr;
+};
+
+static NTSTATUS idmap_tdb2_set_mapping_action(struct db_context *db,
+ void *private_data)
+{
+ TDB_DATA data;
+ NTSTATUS ret;
+ struct idmap_tdb2_set_mapping_context *state;
+ TALLOC_CTX *tmp_ctx = talloc_stackframe();
+
+ state = (struct idmap_tdb2_set_mapping_context *)private_data;
+
+ DEBUG(10, ("Storing %s <-> %s map\n", state->ksidstr, state->kidstr));
+
+ /* check wheter sid mapping is already present in db */
+ data = dbwrap_fetch_bystring(db, tmp_ctx, state->ksidstr);
+ if (data.dptr) {
+ ret = NT_STATUS_OBJECT_NAME_COLLISION;
+ goto done;
+ }
+
+ ret = dbwrap_store_bystring(db, state->ksidstr,
+ string_term_tdb_data(state->kidstr),
+ TDB_INSERT);
+ if (!NT_STATUS_IS_OK(ret)) {
+ DEBUG(0, ("Error storing SID -> ID: %s\n", nt_errstr(ret)));
+ goto done;
+ }
+
+ ret = dbwrap_store_bystring(db, state->kidstr,
+ string_term_tdb_data(state->ksidstr),
+ TDB_INSERT);
+ if (!NT_STATUS_IS_OK(ret)) {
+ DEBUG(0, ("Error storing ID -> SID: %s\n", nt_errstr(ret)));
+ /* try to remove the previous stored SID -> ID map */
+ dbwrap_delete_bystring(db, state->ksidstr);
+ goto done;
+ }
+
+ DEBUG(10,("Stored %s <-> %s\n", state->ksidstr, state->kidstr));
+
+done:
+ talloc_free(tmp_ctx);
+ return ret;
+}
+
/*
run a script to perform a mapping
char line[64];
unsigned long v;
- cmd = talloc_asprintf(ctx, "%s ", idmap_tdb2_state.idmap_script);
+ cmd = talloc_asprintf(ctx, "%s ", ctx->script);
NT_STATUS_HAVE_NO_MEMORY(cmd);
va_start(ap, fmt);
} 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));
+ line, ctx->script));
return NT_STATUS_NONE_MAPPED;
}
} else {
DEBUG(0,("Bad reply '%s' from idmap script %s\n",
- line, idmap_tdb2_state.idmap_script));
+ line, ctx->script));
return NT_STATUS_NONE_MAPPED;
}
/*
Single id to sid lookup function.
*/
-static NTSTATUS idmap_tdb2_id_to_sid(struct idmap_tdb2_context *ctx, struct id_map *map)
+static NTSTATUS idmap_tdb2_id_to_sid(struct idmap_domain *dom, struct id_map *map)
{
NTSTATUS ret;
TDB_DATA data;
char *keystr;
+ NTSTATUS status;
+ struct idmap_tdb2_context *ctx;
+
+
+ status = idmap_tdb2_open_db();
+ NT_STATUS_NOT_OK_RETURN(status);
- if (!ctx || !map) {
+ if (!dom || !map) {
return NT_STATUS_INVALID_PARAMETER;
}
+ ctx = talloc_get_type(dom->private_data, struct idmap_tdb2_context);
+
/* 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))) {
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;
DEBUG(10,("Fetching record %s\n", keystr));
/* Check if the mapping exists */
- data = tdb2_fetch_bystring(keystr, keystr);
+ data = dbwrap_fetch_bystring(idmap_tdb2, keystr, keystr);
if (!data.dptr) {
- fstring sidstr;
+ char *sidstr;
+ struct idmap_tdb2_set_mapping_context store_state;
DEBUG(10,("Record %s not found\n", keystr));
- if (idmap_tdb2_state.idmap_script == NULL) {
+ if (ctx->script == NULL) {
ret = NT_STATUS_NONE_MAPPED;
goto done;
}
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);
+ sidstr = sid_string_talloc(keystr, map->sid);
+ if (!sidstr) {
+ ret = NT_STATUS_NO_MEMORY;
+ goto done;
}
+
+ store_state.ksidstr = sidstr;
+ store_state.kidstr = keystr;
+
+ ret = dbwrap_trans_do(idmap_tdb2, idmap_tdb2_set_mapping_action,
+ &store_state);
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));
/*
Single sid to id lookup function.
*/
-static NTSTATUS idmap_tdb2_sid_to_id(struct idmap_tdb2_context *ctx, struct id_map *map)
+static NTSTATUS idmap_tdb2_sid_to_id(struct idmap_domain *dom, struct id_map *map)
{
NTSTATUS ret;
TDB_DATA data;
char *keystr;
unsigned long rec_id = 0;
+ struct idmap_tdb2_context *ctx;
+ TALLOC_CTX *tmp_ctx = talloc_stackframe();
- if ((keystr = sid_string_talloc(ctx, map->sid)) == NULL) {
+ ret = idmap_tdb2_open_db();
+ NT_STATUS_NOT_OK_RETURN(ret);
+
+ ctx = talloc_get_type(dom->private_data, struct idmap_tdb2_context);
+
+ keystr = sid_string_talloc(tmp_ctx, map->sid);
+ 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 sid is present in database */
- data = tdb2_fetch_bystring(keystr, keystr);
+ data = dbwrap_fetch_bystring(idmap_tdb2, tmp_ctx, keystr);
if (!data.dptr) {
- fstring idstr;
+ char *idstr;
+ struct idmap_tdb2_set_mapping_context store_state;
DEBUG(10,(__location__ " Record %s not found\n", keystr));
- if (idmap_tdb2_state.idmap_script == NULL) {
+ if (ctx->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);
+ /* 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, ("Script returned 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;
+ goto done;
+ }
+
+ idstr = talloc_asprintf(tmp_ctx, "%cID %lu",
+ map->xid.type == ID_TYPE_UID?'U':'G',
+ (unsigned long)map->xid.id);
+ if (idstr == NULL) {
+ ret = NT_STATUS_NO_MEMORY;
+ goto done;
+ }
+
+ store_state.ksidstr = keystr;
+ store_state.kidstr = idstr;
+
+ ret = dbwrap_trans_do(idmap_tdb2, idmap_tdb2_set_mapping_action,
+ &store_state);
goto done;
}
} else { /* Unknown record type ! */
DEBUG(2, ("Found INVALID record %s -> %s\n", keystr, (const char *)data.dptr));
ret = NT_STATUS_INTERNAL_DB_ERROR;
+ goto done;
}
-
+
/* 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))) {
}
done:
- talloc_free(keystr);
+ talloc_free(tmp_ctx);
return ret;
}
*/
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;
- }
+ /* initialize the status to avoid suprise */
+ for (i = 0; ids[i]; i++) {
+ ids[i]->status = ID_UNKNOWN;
}
- 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]);
+ ret = idmap_tdb2_id_to_sid(dom, ids[i]);
if ( ! NT_STATUS_IS_OK(ret)) {
/* if it is just a failed mapping continue */
ids[i]->status = ID_UNMAPPED;
continue;
}
-
+
/* some fatal error occurred, return immediately */
goto done;
}
/*
lookup a set of sids.
*/
-static NTSTATUS idmap_tdb2_sids_to_unixids(struct idmap_domain *dom, struct id_map **ids)
+
+struct idmap_tdb2_sids_to_unixids_context {
+ struct idmap_domain *dom;
+ struct id_map **ids;
+ bool allocate_unmapped;
+};
+
+static NTSTATUS idmap_tdb2_sids_to_unixids_action(struct db_context *db,
+ void *private_data)
{
- struct idmap_tdb2_context *ctx;
- NTSTATUS ret;
+ struct idmap_tdb2_sids_to_unixids_context *state;
int i;
+ NTSTATUS ret = NT_STATUS_OK;
+
+ state = (struct idmap_tdb2_sids_to_unixids_context *)private_data;
+
+ DEBUG(10, ("idmap_tdb2_sids_to_unixids_action: "
+ " domain: [%s], allocate: %s\n",
+ state->dom->name,
+ state->allocate_unmapped ? "yes" : "no"));
+
+ for (i = 0; state->ids[i]; i++) {
+ if ((state->ids[i]->status == ID_UNKNOWN) ||
+ /* retry if we could not map in previous run: */
+ (state->ids[i]->status == ID_UNMAPPED))
+ {
+ NTSTATUS ret2;
+
+ ret2 = idmap_tdb2_sid_to_id(state->dom, state->ids[i]);
+ if (!NT_STATUS_IS_OK(ret2)) {
+
+ /* if it is just a failed mapping, continue */
+ if (NT_STATUS_EQUAL(ret2, NT_STATUS_NONE_MAPPED)) {
+
+ /* make sure it is marked as unmapped */
+ state->ids[i]->status = ID_UNMAPPED;
+ ret = STATUS_SOME_UNMAPPED;
+ } else {
+ /* some fatal error occurred, return immediately */
+ ret = ret2;
+ goto done;
+ }
+ } else {
+ /* all ok, id is mapped */
+ state->ids[i]->status = ID_MAPPED;
+ }
+ }
- /* make sure we initialized */
- if ( ! dom->initialized) {
- ret = idmap_tdb2_db_init(dom);
- if ( ! NT_STATUS_IS_OK(ret)) {
- return ret;
+ if ((state->ids[i]->status == ID_UNMAPPED) &&
+ state->allocate_unmapped)
+ {
+ ret = idmap_tdb2_new_mapping(state->dom, state->ids[i]);
+ if (!NT_STATUS_IS_OK(ret)) {
+ goto done;
+ }
}
}
- ctx = talloc_get_type(dom->private_data, struct idmap_tdb2_context);
+done:
+ return ret;
+}
+
+static NTSTATUS idmap_tdb2_sids_to_unixids(struct idmap_domain *dom, struct id_map **ids)
+{
+ NTSTATUS ret;
+ int i;
+ struct idmap_tdb2_sids_to_unixids_context state;
+ /* initialize the status to avoid suprise */
for (i = 0; ids[i]; i++) {
- ret = idmap_tdb2_sid_to_id(ctx, ids[i]);
- if ( ! NT_STATUS_IS_OK(ret)) {
+ ids[i]->status = ID_UNKNOWN;
+ }
- /* if it is just a failed mapping continue */
- if (NT_STATUS_EQUAL(ret, NT_STATUS_NONE_MAPPED)) {
+ state.dom = dom;
+ state.ids = ids;
+ state.allocate_unmapped = false;
- /* make sure it is marked as unmapped */
- ids[i]->status = ID_UNMAPPED;
- continue;
- }
-
- /* some fatal error occurred, return immediately */
- goto done;
- }
+ ret = idmap_tdb2_sids_to_unixids_action(idmap_tdb2, &state);
- /* all ok, id is mapped */
- ids[i]->status = ID_MAPPED;
+ if (NT_STATUS_EQUAL(ret, STATUS_SOME_UNMAPPED)) {
+ state.allocate_unmapped = true;
+ ret = dbwrap_trans_do(idmap_tdb2,
+ idmap_tdb2_sids_to_unixids_action,
+ &state);
}
- 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;
- }
- }
+ struct idmap_tdb2_set_mapping_context state;
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;
goto done;
}
- if (!(ksidstr = sid_string_talloc(ctx, map->sid))) {
+ ksidstr = sid_string_talloc(ctx, map->sid);
+ if (ksidstr == NULL) {
DEBUG(0, ("Out of memory!\n"));
ret = NT_STATUS_NO_MEMORY;
goto done;
}
- DEBUG(10, ("Storing %s <-> %s map\n", ksidstr, kidstr));
+ state.ksidstr = ksidstr;
+ state.kidstr = 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.
- */
+ ret = dbwrap_trans_do(idmap_tdb2, idmap_tdb2_set_mapping_action,
+ &state);
- 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);
- }
+done:
+ talloc_free(ksidstr);
+ talloc_free(kidstr);
+ return ret;
+}
- rec->delete_rec(rec);
+/**
+ * Create a new mapping for an unmapped SID, also allocating a new ID.
+ * This should be run inside a transaction.
+ *
+ * TODO:
+* Properly integrate this with multi domain idmap config:
+ * Currently, the allocator is default-config only.
+ */
+static NTSTATUS idmap_tdb2_new_mapping(struct idmap_domain *dom, struct id_map *map)
+{
+ NTSTATUS ret;
+ char *sidstr;
+ TDB_DATA data;
+ TALLOC_CTX *mem_ctx = talloc_stackframe();
- tdb_delete(idmap_tdb2_tmp, rec->key);
- tdb_delete(idmap_tdb2_tmp, rec->value);
+ if (map == NULL) {
+ ret = NT_STATUS_INVALID_PARAMETER;
+ goto done;
}
- 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);
- }
+ if ((map->xid.type != ID_TYPE_UID) && (map->xid.type != ID_TYPE_GID)) {
+ ret = NT_STATUS_INVALID_PARAMETER;
+ goto done;
+ }
- rec->delete_rec(rec);
+ if (map->sid == NULL) {
+ ret = NT_STATUS_INVALID_PARAMETER;
+ goto done;
+ }
- tdb_delete(idmap_tdb2_tmp, rec->key);
- tdb_delete(idmap_tdb2_tmp, rec->value);
+ /* check wheter the SID is already mapped in the db */
+ sidstr = sid_string_talloc(mem_ctx, map->sid);
+ if (sidstr == NULL) {
+ DEBUG(0, ("Out of memory!\n"));
+ ret = NT_STATUS_NO_MEMORY;
+ goto done;
}
- 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;
+ data = dbwrap_fetch_bystring(idmap_tdb2, mem_ctx, sidstr);
+ if (data.dptr) {
+ ret = NT_STATUS_OBJECT_NAME_COLLISION;
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;
+
+ /* unmapped - get a new id */
+ ret = idmap_tdb2_get_new_id(dom, &map->xid);
+ if (!NT_STATUS_IS_OK(ret)) {
+ DEBUG(3, ("Could not allocate id: %s\n", nt_errstr(ret)));
goto done;
}
- DEBUG(10,("Stored %s <-> %s\n", ksidstr, kidstr));
- ret = NT_STATUS_OK;
+ DEBUG(10, ("Setting mapping: %s <-> %s %lu\n",
+ sid_string_dbg(map->sid),
+ (map->xid.type == ID_TYPE_UID) ? "UID" : "GID",
+ (unsigned long)map->xid.id));
+
+ map->status = ID_MAPPED;
+
+ /* store the mapping */
+ ret = idmap_tdb2_set_mapping(dom, map);
+ if (!NT_STATUS_IS_OK(ret)) {
+ DEBUG(3, ("Could not store the new mapping: %s\n",
+ nt_errstr(ret)));
+ }
done:
- talloc_free(ksidstr);
- talloc_free(kidstr);
- SAFE_FREE(data.dptr);
- TALLOC_FREE(update_lock);
+ talloc_free(mem_ctx);
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
*/
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,
+ .allocate_id = idmap_tdb2_get_new_id,
.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);
}
git.samba.org / amitay / samba.git / blobdiff