Changeset 594303b in mainline for uspace/srv/fs/tmpfs/tmpfs_ops.c

Timestamp:

2009-04-18T15:32:56Z (15 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

8d049ee0

Parents:

6b6e423a

Message:

Support mount options.
Let tmpfs decide whether to start empty or restored a TMPFS dump based on the mount option.

File:

• uspace/srv/fs/tmpfs/tmpfs_ops.c (modified) (2 diffs)

uspace/srv/fs/tmpfs/tmpfs_ops.c

@@ -400 +400 @@
         dev_handle_t dev_handle = (dev_handle_t) IPC_GET_ARG1(*request);
 
+        /* accept the mount options */
+        ipc_callid_t callid;
+        size_t size;
+        if (!ipc_data_write_receive(&callid, &size)) {
+                ipc_answer_0(callid, EINVAL);
+                ipc_answer_0(rid, EINVAL);
+                return;
+        }
+        char *opts = malloc(size + 1);
+        if (!opts) {
+                ipc_answer_0(callid, ENOMEM);
+                ipc_answer_0(rid, ENOMEM);
+                return;
+        }
+        ipcarg_t retval = ipc_data_write_finalize(callid, opts, size);
+        if (retval != EOK) {
+                ipc_answer_0(rid, retval);
+                free(opts);
+                return;
+        }
+        opts[size] = '\0';
+
         /* Initialize TMPFS. */
         if (!root && !tmpfs_init()) {
@@ -406 +428 @@
         }
 
-        if (dev_handle >= 0) {
+        if (str_cmp(opts, "restore") == 0) {
                 if (tmpfs_restore(dev_handle))
                         ipc_answer_3(rid, EOK, root->index, root->size,