Changeset 415c7e0d in mainline for uspace/lib/libc/generic/vfs/vfs.c

Timestamp:

2009-06-28T21:41:13Z (15 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

bfd247f

Parents:

75160a6

Message:

Implement stat() and VFS_IN_STAT.
Modify bdsh() to use stat() during ls.
In devfs, allow lookups that don't
specify one of L_FILE and L_DIRECTORY.

File:

• uspace/lib/libc/generic/vfs/vfs.c (modified) (1 diff)

uspace/lib/libc/generic/vfs/vfs.c

@@ -389 +389 @@
 }
 
+int stat(const char *path, struct stat *stat)
+{
+        ipcarg_t rc;
+        aid_t req;
+        
+        size_t pa_size;
+        char *pa = absolutize(path, &pa_size);
+        if (!pa)
+                return ENOMEM;
+        
+        futex_down(&vfs_phone_futex);
+        async_serialize_start();
+        vfs_connect();
+        
+        req = async_send_0(vfs_phone, VFS_IN_STAT, NULL);
+        rc = ipc_data_write_start(vfs_phone, pa, pa_size);
+        if (rc != EOK) {
+                async_wait_for(req, NULL);
+                async_serialize_end();
+                futex_up(&vfs_phone_futex);
+                free(pa);
+                return (int) rc;
+        }
+        rc = ipc_data_read_start(vfs_phone, stat, sizeof(struct stat));
+        if (rc != EOK) {
+                async_wait_for(req, NULL);
+                async_serialize_end();
+                futex_up(&vfs_phone_futex);
+                free(pa);
+                return (int) rc;
+        }
+        async_wait_for(req, &rc);
+        async_serialize_end();
+        futex_up(&vfs_phone_futex);
+        free(pa);
+        return rc;
+}
+
 DIR *opendir(const char *dirname)
 {