#define DBGC_CLASS DBGC_IDMAP
#define HWM "NEXT RANGE"
+#define ALLOC_HWM_UID "NEXT ALLOC UID"
+#define ALLOC_HWM_GID "NEXT ALLOC GID"
+#define ALLOC_RANGE "ALLOC"
#define CONFIGKEY "CONFIG"
struct autorid_global_config {
};
struct autorid_domain_config {
- struct dom_sid sid;
+ fstring sid;
uint32_t domainnum;
struct autorid_global_config *globalcfg;
};
/* handle to the tdb storing domain <-> range assignments */
static struct db_context *autorid_db;
-static NTSTATUS idmap_autorid_get_domainrange(struct db_context *db,
+static NTSTATUS idmap_autorid_get_domainrange_action(struct db_context *db,
void *private_data)
{
NTSTATUS ret;
uint32_t domainnum, hwm;
- fstring sidstr;
char *numstr;
struct autorid_domain_config *cfg;
cfg = (struct autorid_domain_config *)private_data;
- dom_sid_string_buf(&(cfg->sid), sidstr, sizeof(sidstr));
- if (!dbwrap_fetch_uint32(db, sidstr, &domainnum)) {
- DEBUG(10, ("Acquiring new range for domain %s\n", sidstr));
+ ret = dbwrap_fetch_uint32(db, cfg->sid, &(cfg->domainnum));
- /* fetch the current HWM */
- if (!dbwrap_fetch_uint32(db, HWM, &hwm)) {
- DEBUG(1, ("Fatal error while fetching current "
- "HWM value!\n"));
- ret = NT_STATUS_INTERNAL_ERROR;
- goto error;
- }
+ if (NT_STATUS_IS_OK(ret)) {
+ /* entry is already present*/
+ return ret;
+ }
- /* do we have a range left? */
- if (hwm >= cfg->globalcfg->maxranges) {
- DEBUG(1, ("No more domain ranges available!\n"));
- ret = NT_STATUS_NO_MEMORY;
- goto error;
- }
+ DEBUG(10, ("Acquiring new range for domain %s\n", cfg->sid));
- /* increase the HWM */
- ret = dbwrap_change_uint32_atomic(db, HWM, &domainnum, 1);
- if (!NT_STATUS_IS_OK(ret)) {
- DEBUG(1, ("Fatal error while fetching a new "
- "domain range value!\n"));
- goto error;
- }
+ /* fetch the current HWM */
+ ret = dbwrap_fetch_uint32(db, HWM, &hwm);
+ if (!NT_STATUS_IS_OK(ret)) {
+ DEBUG(1, ("Fatal error while fetching current "
+ "HWM value: %s\n", nt_errstr(ret)));
+ ret = NT_STATUS_INTERNAL_ERROR;
+ goto error;
+ }
- /* store away the new mapping in both directions */
- ret = dbwrap_trans_store_uint32(db, sidstr, domainnum);
- if (!NT_STATUS_IS_OK(ret)) {
- DEBUG(1, ("Fatal error while storing new "
- "domain->range assignment!\n"));
- goto error;
- }
+ /* do we have a range left? */
+ if (hwm >= cfg->globalcfg->maxranges) {
+ DEBUG(1, ("No more domain ranges available!\n"));
+ ret = NT_STATUS_NO_MEMORY;
+ goto error;
+ }
- numstr = talloc_asprintf(db, "%u", domainnum);
- if (!numstr) {
- ret = NT_STATUS_NO_MEMORY;
- goto error;
- }
+ /* increase the HWM */
+ ret = dbwrap_change_uint32_atomic(db, HWM, &domainnum, 1);
+ if (!NT_STATUS_IS_OK(ret)) {
+ DEBUG(1, ("Fatal error while fetching a new "
+ "domain range value!\n"));
+ goto error;
+ }
- ret = dbwrap_trans_store_bystring(db, numstr,
- string_term_tdb_data(sidstr),
- TDB_INSERT);
- talloc_free(numstr);
- if (!NT_STATUS_IS_OK(ret)) {
- DEBUG(1, ("Fatal error while storing "
- "new domain->range assignment!\n"));
- goto error;
- }
- DEBUG(5, ("Acquired new range #%d for domain %s\n",
- domainnum, sidstr));
+ /* store away the new mapping in both directions */
+ ret = dbwrap_store_uint32(db, cfg->sid, domainnum);
+ if (!NT_STATUS_IS_OK(ret)) {
+ DEBUG(1, ("Fatal error while storing new "
+ "domain->range assignment!\n"));
+ goto error;
}
- DEBUG(10, ("Using range #%d for domain %s\n", domainnum, sidstr));
+ numstr = talloc_asprintf(db, "%u", domainnum);
+ if (!numstr) {
+ ret = NT_STATUS_NO_MEMORY;
+ goto error;
+ }
+
+ ret = dbwrap_store_bystring(db, numstr,
+ string_term_tdb_data(cfg->sid), TDB_INSERT);
+
+ talloc_free(numstr);
+ if (!NT_STATUS_IS_OK(ret)) {
+ DEBUG(1, ("Fatal error while storing "
+ "new domain->range assignment!\n"));
+ goto error;
+ }
+ DEBUG(5, ("Acquired new range #%d for domain %s\n",
+ domainnum, cfg->sid));
+
cfg->domainnum = domainnum;
return NT_STATUS_OK;
- error:
+error:
return ret;
}
+static NTSTATUS idmap_autorid_get_domainrange(struct autorid_domain_config *dom)
+{
+ NTSTATUS ret;
+
+ /*
+ * try to find mapping without locking the database,
+ * if it is not found create a mapping in a transaction
+ */
+ ret = dbwrap_fetch_uint32(autorid_db, dom->sid, &(dom->domainnum));
+
+ if (!NT_STATUS_IS_OK(ret)) {;
+ ret = dbwrap_trans_do(autorid_db,
+ idmap_autorid_get_domainrange_action, dom);
+ }
+
+ DEBUG(10, ("Using range #%d for domain %s\n", dom->domainnum,
+ dom->sid));
+
+ return ret;
+}
+
static NTSTATUS idmap_autorid_id_to_sid(struct autorid_global_config *cfg,
struct id_map *map)
{
TDB_DATA data;
char *keystr;
struct dom_sid sid;
+ NTSTATUS status;
/* can this be one of our ids? */
if (map->xid.id < cfg->minvalue) {
return NT_STATUS_NO_MEMORY;
}
- data = dbwrap_fetch_bystring(autorid_db, talloc_tos(), keystr);
+ status = dbwrap_fetch_bystring(autorid_db, talloc_tos(), keystr, &data);
TALLOC_FREE(keystr);
- if (!data.dptr) {
+ if (!NT_STATUS_IS_OK(status)) {
DEBUG(4, ("id %d belongs to range %d which does not have "
"domain mapping, ignoring mapping request\n",
map->xid.id, range));
+ TALLOC_FREE(data.dptr);
+ map->status = ID_UNKNOWN;
+ return NT_STATUS_OK;
+ }
+
+ if (strncmp((const char *)data.dptr,
+ ALLOC_RANGE,
+ strlen(ALLOC_RANGE)) == 0) {
+ /* this is from the alloc range, there is no mapping back */
+ DEBUG(5, ("id %d belongs to alloc range, cannot map back\n",
+ map->xid.id));
+ TALLOC_FREE(data.dptr);
map->status = ID_UNKNOWN;
return NT_STATUS_OK;
}
struct winbindd_tdc_domain *domain;
struct autorid_domain_config domaincfg;
uint32_t rid;
+ struct dom_sid domainsid;
ZERO_STRUCT(domaincfg);
- sid_copy(&domaincfg.sid, ids[i]->sid);
- if (!sid_split_rid(&domaincfg.sid, &rid)) {
+ sid_copy(&domainsid, ids[i]->sid);
+ if (!sid_split_rid(&domainsid, &rid)) {
DEBUG(4, ("Could not determine domain SID from %s, "
"ignoring mapping request\n",
sid_string_dbg(ids[i]->sid)));
* Check if the domain is around
*/
domain = wcache_tdc_fetch_domainbysid(talloc_tos(),
- &domaincfg.sid);
+ &domainsid);
if (domain == NULL) {
DEBUG(10, ("Ignoring unknown domain sid %s\n",
- sid_string_dbg(&domaincfg.sid)));
+ sid_string_dbg(&domainsid)));
continue;
}
TALLOC_FREE(domain);
domaincfg.globalcfg = global;
+ sid_to_fstring(domaincfg.sid, &domainsid);
- ret = dbwrap_trans_do(autorid_db,
- idmap_autorid_get_domainrange,
- &domaincfg);
+ ret = idmap_autorid_get_domainrange(&domaincfg);
if (!NT_STATUS_IS_OK(ret)) {
DEBUG(3, ("Could not determine range for domain, "
}
+/* initialize the given HWM to 0 if it does not exist yet */
+static NTSTATUS idmap_autorid_init_hwm(const char *hwm) {
+
+ NTSTATUS status;
+ uint32_t hwmval;
+
+ status = dbwrap_fetch_uint32(autorid_db, hwm, &hwmval);
+ if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND)) {
+ status = dbwrap_trans_store_int32(autorid_db, hwm, 0);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0,
+ ("Unable to initialise HWM (%s) in autorid "
+ "database: %s\n", hwm, nt_errstr(status)));
+ return NT_STATUS_INTERNAL_DB_ERROR;
+ }
+ } else if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0, ("unable to fetch HWM (%s) from autorid "
+ "database: %s\n", hwm, nt_errstr(status)));
+ return status;
+ }
+
+ return NT_STATUS_OK;
+}
+
/*
* open and initialize the database which stores the ranges for the domains
*/
static NTSTATUS idmap_autorid_db_init(void)
{
- int32_t hwm;
+ NTSTATUS status;
if (autorid_db) {
/* its already open */
}
/* Initialize high water mark for the currently used range to 0 */
- hwm = dbwrap_fetch_int32(autorid_db, HWM);
- if ((hwm < 0)) {
- if (!NT_STATUS_IS_OK
- (dbwrap_trans_store_int32(autorid_db, HWM, 0))) {
- DEBUG(0,
- ("Unable to initialise HWM in autorid "
- "database\n"));
- return NT_STATUS_INTERNAL_DB_ERROR;
- }
- }
- return NT_STATUS_OK;
+ status = idmap_autorid_init_hwm(HWM);
+ NT_STATUS_NOT_OK_RETURN(status);
+
+ status = idmap_autorid_init_hwm(ALLOC_HWM_UID);
+ NT_STATUS_NOT_OK_RETURN(status);
+
+ status = idmap_autorid_init_hwm(ALLOC_HWM_GID);
+
+ return status;
}
static struct autorid_global_config *idmap_autorid_loadconfig(TALLOC_CTX * ctx)
TDB_DATA data;
struct autorid_global_config *cfg;
unsigned long minvalue, rangesize, maxranges;
+ NTSTATUS status;
- data = dbwrap_fetch_bystring(autorid_db, ctx, CONFIGKEY);
+ status = dbwrap_fetch_bystring(autorid_db, ctx, CONFIGKEY, &data);
- if (!data.dptr) {
+ if (!NT_STATUS_IS_OK(status)) {
DEBUG(10, ("No saved config found\n"));
return NULL;
}
/* read previously stored config and current HWM */
storedconfig = idmap_autorid_loadconfig(talloc_tos());
- if (!dbwrap_fetch_uint32(autorid_db, HWM, &hwm)) {
+ status = dbwrap_fetch_uint32(autorid_db, HWM, &hwm);
+ if (!NT_STATUS_IS_OK(status)) {
DEBUG(1, ("Fatal error while fetching current "
- "HWM value!\n"));
+ "HWM value: %s\n", nt_errstr(status)));
status = NT_STATUS_INTERNAL_ERROR;
goto error;
}
return status;
}
+static NTSTATUS idmap_autorid_allocate_id(struct idmap_domain *dom,
+ struct unixid *xid) {
+
+ NTSTATUS ret;
+ struct autorid_global_config *globalcfg;
+ struct autorid_domain_config domaincfg;
+ uint32_t hwm;
+ const char *hwmkey;
+
+ 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;
+ }
+
+ if ((xid->type != ID_TYPE_UID) && (xid->type != ID_TYPE_GID)) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+
+ globalcfg = talloc_get_type(dom->private_data,
+ struct autorid_global_config);
+
+ /* fetch the range for the allocation pool */
+
+ ZERO_STRUCT(domaincfg);
+
+ domaincfg.globalcfg = globalcfg;
+ fstrcpy(domaincfg.sid, ALLOC_RANGE);
+
+ ret = idmap_autorid_get_domainrange(&domaincfg);
+
+ if (!NT_STATUS_IS_OK(ret)) {
+ DEBUG(3, ("Could not determine range for allocation pool, "
+ "check previous messages for reason\n"));
+ return ret;
+ }
+
+ /* fetch the current HWM */
+ hwmkey = (xid->type==ID_TYPE_UID)?ALLOC_HWM_UID:ALLOC_HWM_GID;
+
+ ret = dbwrap_fetch_uint32(autorid_db, hwmkey, &hwm);
+
+ if (!NT_STATUS_IS_OK(ret)) {
+ DEBUG(1, ("Failed to fetch current allocation HWM value: %s\n",
+ nt_errstr(ret)));
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+
+ if (hwm >= globalcfg->rangesize) {
+ DEBUG(1, ("allocation range is depleted!\n"));
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ ret = dbwrap_change_uint32_atomic(autorid_db, hwmkey, &(xid->id), 1);
+ if (!NT_STATUS_IS_OK(ret)) {
+ DEBUG(1, ("Fatal error while allocating new ID!\n"));
+ return ret;
+ }
+
+ xid->id = globalcfg->minvalue +
+ globalcfg->rangesize * domaincfg.domainnum +
+ xid->id;
+
+ DEBUG(10, ("Returned new %s %d from allocation range\n",
+ (xid->type==ID_TYPE_UID)?"uid":"gid", xid->id));
+
+ return ret;
+}
+
/*
Close the idmap tdb instance
*/
.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)
+NTSTATUS samba_init_module(void)
{
return smb_register_idmap(SMB_IDMAP_INTERFACE_VERSION,
"autorid", &autorid_methods);
git.samba.org / mat / samba.git / blobdiff