Changeset 75160a6 in mainline for uspace/lib/libfs/libfs.c

Timestamp:

2009-06-28T19:18:15Z (16 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

415c7e0d

Parents:

852b801

Message:

Add libfs_stat() and let FAT and TMPFS use it.

File:

• uspace/lib/libfs/libfs.c (modified) (2 diffs)

uspace/lib/libfs/libfs.c

@@ -44 +44 @@
 #include <dirent.h>
 #include <mem.h>
+#include <sys/stat.h>
 
 /** Register file system server.
@@ -429 +430 @@
 }
 
+void libfs_stat(libfs_ops_t *ops, fs_handle_t fs_handle, ipc_callid_t rid,
+    ipc_call_t *request)
+{
+        dev_handle_t dev_handle = (dev_handle_t) IPC_GET_ARG1(*request);
+        fs_index_t index = (fs_index_t) IPC_GET_ARG2(*request);
+        fs_node_t *fn = ops->node_get(dev_handle, index);
+
+        ipc_callid_t callid;
+        size_t size;
+        if (!ipc_data_read_receive(&callid, &size) ||
+            size < sizeof(struct stat)) {
+                ipc_answer_0(callid, EINVAL);
+                ipc_answer_0(rid, EINVAL);
+                return;
+        }
+
+        struct stat *stat = malloc(sizeof(struct stat));
+        if (!stat) {
+                ipc_answer_0(callid, ENOMEM);
+                ipc_answer_0(rid, ENOMEM);
+                return;
+        }
+        memset(stat, 0, sizeof(struct stat));
+        
+        stat->fs_handle = fs_handle;
+        stat->dev_handle = dev_handle;
+        stat->index = index;
+        stat->lnkcnt = ops->lnkcnt_get(fn); 
+        stat->is_file = ops->is_file(fn);
+        stat->size = ops->size_get(fn);
+
+        ipc_data_read_finalize(callid, stat, sizeof(struct stat));
+        ipc_answer_0(rid, EOK);
+
+        free(stat);
+}
+
 /** Open VFS triplet.
  *