Convert dbwrap_trans_store to NTSTATUS
[samba.git] / source3 / lib / sharesec.c
index b3b000579f1b9539320e932aa44e494f741292de..33141a967174d17f0e039b22137387ae1f1f4698 100644 (file)
@@ -23,7 +23,7 @@
  Create the share security tdb.
  ********************************************************************/
 
-static TDB_CONTEXT *share_tdb; /* used for share security descriptors */
+static struct db_context *share_db; /* used for share security descriptors */
 #define SHARE_DATABASE_VERSION_V1 1
 #define SHARE_DATABASE_VERSION_V2 2 /* version id in little endian. */
 
@@ -36,41 +36,88 @@ static const struct generic_mapping file_generic_mapping = {
         FILE_GENERIC_ALL
 };
 
+static int delete_fn(struct db_record *rec, void *priv)
+{
+       rec->delete_rec(rec);
+       return 0;
+}
 
 static bool share_info_db_init(void)
 {
        const char *vstring = "INFO/version";
        int32 vers_id;
  
-       if (share_tdb) {
+       if (share_db != NULL) {
                return True;
        }
 
-       share_tdb = tdb_open_log(state_path("share_info.tdb"), 0, TDB_DEFAULT, O_RDWR|O_CREAT, 0600);
-       if (!share_tdb) {
+       share_db = db_open_trans(NULL, state_path("share_info.tdb"), 0,
+                                TDB_DEFAULT, O_RDWR|O_CREAT, 0600);
+       if (share_db == NULL) {
                DEBUG(0,("Failed to open share info database %s (%s)\n",
                        state_path("share_info.tdb"), strerror(errno) ));
                return False;
        }
  
-       /* handle a Samba upgrade */
-       tdb_lock_bystring(share_tdb, vstring);
+       vers_id = dbwrap_fetch_int32(share_db, vstring);
+       if (vers_id == SHARE_DATABASE_VERSION_V2) {
+               return true;
+       }
+
+       if (share_db->transaction_start(share_db) != 0) {
+               DEBUG(0, ("transaction_start failed\n"));
+               TALLOC_FREE(share_db);
+               return false;
+       }
+
+       vers_id = dbwrap_fetch_int32(share_db, vstring);
+       if (vers_id == SHARE_DATABASE_VERSION_V2) {
+               /*
+                * Race condition
+                */
+               if (share_db->transaction_cancel(share_db)) {
+                       smb_panic("transaction_cancel failed");
+               }
+               return true;
+       }
 
        /* Cope with byte-reversed older versions of the db. */
-       vers_id = tdb_fetch_int32(share_tdb, vstring);
        if ((vers_id == SHARE_DATABASE_VERSION_V1) || (IREV(vers_id) == SHARE_DATABASE_VERSION_V1)) {
                /* Written on a bigendian machine with old fetch_int code. Save as le. */
-               tdb_store_int32(share_tdb, vstring, SHARE_DATABASE_VERSION_V2);
+
+               if (dbwrap_store_int32(share_db, vstring,
+                                      SHARE_DATABASE_VERSION_V2) != 0) {
+                       DEBUG(0, ("dbwrap_store_int32 failed\n"));
+                       goto cancel;
+               }
                vers_id = SHARE_DATABASE_VERSION_V2;
        }
 
        if (vers_id != SHARE_DATABASE_VERSION_V2) {
-               tdb_traverse(share_tdb, tdb_traverse_delete_fn, NULL);
-               tdb_store_int32(share_tdb, vstring, SHARE_DATABASE_VERSION_V2);
+               if (share_db->traverse(share_db, delete_fn, NULL) != 0) {
+                       DEBUG(0, ("wipe_all failed\n"));
+                       goto cancel;
+               }
+               if (dbwrap_store_int32(share_db, vstring,
+                                      SHARE_DATABASE_VERSION_V2) != 0) {
+                       DEBUG(0, ("dbwrap_store_int32 failed\n"));
+                       goto cancel;
+               }
        }
-       tdb_unlock_bystring(share_tdb, vstring);
 
-       return True;
+       if (share_db->transaction_commit(share_db) != 0) {
+               DEBUG(0, ("transaction_commit failed\n"));
+               goto cancel;
+       }
+
+       return true;
+
+ cancel:
+       if (share_db->transaction_cancel(share_db)) {
+               smb_panic("transaction_cancel failed");
+       }
+
+       return false;
 }
 
 /*******************************************************************
@@ -92,7 +139,9 @@ SEC_DESC *get_share_security_default( TALLOC_CTX *ctx, size_t *psize, uint32 def
        init_sec_ace(&ace, &global_sid_World, SEC_ACE_TYPE_ACCESS_ALLOWED, sa, 0);
 
        if ((psa = make_sec_acl(ctx, NT4_ACL_REVISION, 1, &ace)) != NULL) {
-               psd = make_sec_desc(ctx, SEC_DESC_REVISION, SEC_DESC_SELF_RELATIVE, NULL, NULL, NULL, psa, psize);
+               psd = make_sec_desc(ctx, SECURITY_DESCRIPTOR_REVISION_1,
+                                   SEC_DESC_SELF_RELATIVE, NULL, NULL, NULL,
+                                   psa, psize);
        }
 
        if (!psd) {
@@ -124,7 +173,7 @@ SEC_DESC *get_share_security( TALLOC_CTX *ctx, const char *servicename,
                return NULL;
        }
 
-       data = tdb_fetch_bystring(share_tdb, key);
+       data = dbwrap_fetch_bystring(share_db, talloc_tos(), key);
 
        TALLOC_FREE(key);
 
@@ -135,6 +184,8 @@ SEC_DESC *get_share_security( TALLOC_CTX *ctx, const char *servicename,
 
        status = unmarshall_sec_desc(ctx, data.dptr, data.dsize, &psd);
 
+       TALLOC_FREE(data.dptr);
+
        if (!NT_STATUS_IS_OK(status)) {
                DEBUG(0, ("unmarshall_sec_desc failed: %s\n",
                          nt_errstr(status)));
@@ -142,7 +193,7 @@ SEC_DESC *get_share_security( TALLOC_CTX *ctx, const char *servicename,
        }
 
        if (psd)
-               *psize = sec_desc_size(psd);
+               *psize = ndr_size_security_descriptor(psd, 0);
 
        return psd;
 }
@@ -178,10 +229,11 @@ bool set_share_security(const char *share_name, SEC_DESC *psd)
                goto out;
        }
 
-       if (tdb_trans_store_bystring(share_tdb, key, blob,
-                                    TDB_REPLACE) == -1) {
-               DEBUG(1,("set_share_security: Failed to store secdesc for "
-                        "%s\n", share_name ));
+       status = dbwrap_trans_store(share_db, string_term_tdb_data(key), blob,
+                                   TDB_REPLACE);
+       if (!NT_STATUS_IS_OK(status)) {
+               DEBUG(1, ("set_share_security: Failed to store secdesc for "
+                         "%s: %s\n", share_name, nt_errstr(status)));
                goto out;
        }
 
@@ -208,7 +260,7 @@ bool delete_share_security(const char *servicename)
        }
        kbuf = string_term_tdb_data(key);
 
-       if (tdb_trans_delete(share_tdb, kbuf) != 0) {
+       if (dbwrap_trans_delete(share_db, kbuf) != 0) {
                DEBUG(0, ("delete_share_security: Failed to delete entry for "
                          "share %s\n", servicename));
                return False;
@@ -226,25 +278,20 @@ bool share_access_check(const NT_USER_TOKEN *token, const char *sharename,
 {
        uint32 granted;
        NTSTATUS status;
-       TALLOC_CTX *mem_ctx = NULL;
        SEC_DESC *psd = NULL;
        size_t sd_size;
        bool ret = True;
 
-       if (!(mem_ctx = talloc_init("share_access_check"))) {
-               return False;
-       }
-
-       psd = get_share_security(mem_ctx, sharename, &sd_size);
+       psd = get_share_security(talloc_tos(), sharename, &sd_size);
 
        if (!psd) {
-               TALLOC_FREE(mem_ctx);
                return True;
        }
 
        ret = se_access_check(psd, token, desired_access, &granted, &status);
 
-       talloc_destroy(mem_ctx);
+       TALLOC_FREE(psd);
+
        return ret;
 }
 
@@ -291,7 +338,7 @@ bool parse_usershare_acl(TALLOC_CTX *ctx, const char *acl_str, SEC_DESC **ppsd)
                uint32 s_access;
                DOM_SID sid;
                char *sidstr;
-               uint8 type = SEC_ACE_TYPE_ACCESS_ALLOWED;
+               enum security_ace_type type = SEC_ACE_TYPE_ACCESS_ALLOWED;
 
                if (!next_token_talloc(ctx, &pacl, &sidstr, ":")) {
                        DEBUG(0,("parse_usershare_acl: malformed usershare acl looking "
@@ -339,7 +386,9 @@ bool parse_usershare_acl(TALLOC_CTX *ctx, const char *acl_str, SEC_DESC **ppsd)
        }
 
        if ((psa = make_sec_acl(ctx, NT4_ACL_REVISION, num_aces, ace_list)) != NULL) {
-               psd = make_sec_desc(ctx, SEC_DESC_REVISION, SEC_DESC_SELF_RELATIVE, NULL, NULL, NULL, psa, &sd_size);
+               psd = make_sec_desc(ctx, SECURITY_DESCRIPTOR_REVISION_1,
+                                   SEC_DESC_SELF_RELATIVE, NULL, NULL, NULL,
+                                   psa, &sd_size);
        }
 
        if (!psd) {