[PATCH] v9fs: add extension field to Tcreate

Implement a new way of creating special files.  Instead of Tcreate+Twstat,
add one more field to Tcreate that contains special file description.

Signed-off-by: Latchesar Ionkov <lucho@ionkov.net>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 15 insertions, 17 deletions

diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c
index de3a129698da..1144d59d6469 100644
--- a/fs/9p/vfs_file.c
+++ b/fs/9p/vfs_file.c
@@ -69,29 +69,30 @@ int v9fs_file_open(struct inode *inode, struct file *file)
 
         fid = v9fs_get_idpool(&v9ses->fidpool);
         if (fid < 0) {
-                        eprintk(KERN_WARNING, "newfid fails!\n");
-                        return -ENOSPC;
-                }
+                eprintk(KERN_WARNING, "newfid fails!\n");
+                return -ENOSPC;
+        }
 
         err = v9fs_t_walk(v9ses, vfid->fid, fid, NULL, NULL);
         if (err < 0) {
-                        dprintk(DEBUG_ERROR, "rewalk didn't work\n");
+                dprintk(DEBUG_ERROR, "rewalk didn't work\n");
                 goto put_fid;
         }
 
-        vfid = kmalloc(sizeof(struct v9fs_fid), GFP_KERNEL);
-        if (vfid == NULL) {
-                dprintk(DEBUG_ERROR, "out of memory\n");
-                goto clunk_fid;
-                }
-
-                /* TODO: do special things for O_EXCL, O_NOFOLLOW, O_SYNC */
-                /* translate open mode appropriately */
+        /* TODO: do special things for O_EXCL, O_NOFOLLOW, O_SYNC */
+        /* translate open mode appropriately */
         omode = v9fs_uflags2omode(file->f_flags);
         err = v9fs_t_open(v9ses, fid, omode, &fcall);
         if (err < 0) {
                 PRINT_FCALL_ERROR("open failed", fcall);
-                goto destroy_vfid;
+                goto clunk_fid;
+        }
+
+        vfid = kmalloc(sizeof(struct v9fs_fid), GFP_KERNEL);
+        if (vfid == NULL) {
+                dprintk(DEBUG_ERROR, "out of memory\n");
+                err = -ENOMEM;
+                goto clunk_fid;
         }
 
         file->private_data = vfid;
@@ -106,15 +107,12 @@ int v9fs_file_open(struct inode *inode, struct file *file)
 
         return 0;
 
-destroy_vfid:
-        v9fs_fid_destroy(vfid);
-
 clunk_fid:
         v9fs_t_clunk(v9ses, fid);
 
 put_fid:
         v9fs_put_idpool(fid, &v9ses->fidpool);
-                kfree(fcall);
+        kfree(fcall);
 
         return err;
 }