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authorChristian Ambach <ambi@samba.org>2011-08-31 18:28:51 +0200
committerChristian Ambach <ambi@samba.org>2011-09-07 15:15:09 +0200
commit0aa558718ad7427ee8b02046da73eea1838a5a32 (patch)
tree3b815bcddaa8864617baceb8ff6508c79372dc43
parentc640e9235fe0af6eb7dd9474807942ffdecbb8c4 (diff)
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s3:idmap/autorid add a small alloc pool to autorid
this is needed to allocate gids for BUILTIN\Users and BUILTIN\Administrators gids are stored at the start of the first domain as RIDs start with values over 500, we have some room there so we do not need to allocate a range Autobuild-User: Christian Ambach <ambi@samba.org> Autobuild-Date: Wed Sep 7 15:15:09 CEST 2011 on sn-devel-104
-rw-r--r--source3/winbindd/idmap_autorid.c52
1 files changed, 52 insertions, 0 deletions
diff --git a/source3/winbindd/idmap_autorid.c b/source3/winbindd/idmap_autorid.c
index a60f926fac..85ddca2242 100644
--- a/source3/winbindd/idmap_autorid.c
+++ b/source3/winbindd/idmap_autorid.c
@@ -35,6 +35,8 @@
#define DBGC_CLASS DBGC_IDMAP
#define HWM "NEXT RANGE"
+#define ALLOC_HWM "NEXT ALLOC ID"
+#define ALLOC_POOL_SIZE 500
#define CONFIGKEY "CONFIG"
struct autorid_global_config {
@@ -361,6 +363,17 @@ static NTSTATUS idmap_autorid_db_init(void)
}
}
+ /* Initialize high water mark for alloc pool to 0 */
+ hwm = dbwrap_fetch_int32(autorid_db, ALLOC_HWM);
+ if ((hwm < 0)) {
+ if (!NT_STATUS_IS_OK
+ (dbwrap_trans_store_int32(autorid_db, ALLOC_HWM, 0))) {
+ DEBUG(0,
+ ("Unable to initialise HWM in autorid "
+ "database\n"));
+ return NT_STATUS_INTERNAL_DB_ERROR;
+ }
+ }
return NT_STATUS_OK;
}
@@ -542,6 +555,44 @@ done:
return status;
}
+static NTSTATUS idmap_autorid_allocate_id(struct idmap_domain *dom,
+ struct unixid *xid) {
+
+ struct autorid_global_config *globalcfg;
+ NTSTATUS ret;
+ uint32_t hwm;
+
+ if (!strequal(dom->name, "*")) {
+ DEBUG(3, ("idmap_autorid_allocate_id: "
+ "Refusing creation of mapping for domain'%s'. "
+ "Currently only supported for the default "
+ "domain \"*\".\n",
+ dom->name));
+ return NT_STATUS_NOT_IMPLEMENTED;
+ }
+
+ globalcfg = talloc_get_type(dom->private_data,
+ struct autorid_global_config);
+
+ if (!dbwrap_fetch_uint32(autorid_db, ALLOC_HWM, &hwm)) {
+ DEBUG(1, ("Failed to fetch current allocation HWM value!\n"));
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+
+ if (hwm > ALLOC_POOL_SIZE) {
+ DEBUG(1, ("allocation pool is depleted!\n"));
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ ret = dbwrap_change_uint32_atomic(autorid_db, ALLOC_HWM, &(xid->id), 1);
+ if (!NT_STATUS_IS_OK(ret)) {
+ DEBUG(1, ("Fatal error while allocating new ID!\n"));
+ }
+ xid->id = (xid->id)+(globalcfg->minvalue);
+
+ return ret;
+}
+
/*
Close the idmap tdb instance
*/
@@ -549,6 +600,7 @@ static struct idmap_methods autorid_methods = {
.init = idmap_autorid_initialize,
.unixids_to_sids = idmap_autorid_unixids_to_sids,
.sids_to_unixids = idmap_autorid_sids_to_unixids,
+ .allocate_id = idmap_autorid_allocate_id
};
NTSTATUS idmap_autorid_init(void)