1 files changed, 62 insertions, 38 deletions

diff --git a/fs/9p/vfs_super.c b/fs/9p/vfs_super.c
index be74d020436e..c55c614500ad 100644
--- a/fs/9p/vfs_super.c
+++ b/fs/9p/vfs_super.c
@@ -39,12 +39,15 @@
 #include <linux/sched.h>
 #include <linux/slab.h>
 #include <linux/statfs.h>
+#include <linux/magic.h>
 #include <net/9p/9p.h>
 #include <net/9p/client.h>
 
 #include "v9fs.h"
 #include "v9fs_vfs.h"
 #include "fid.h"
+#include "xattr.h"
+#include "acl.h"
 
 static const struct super_operations v9fs_super_ops, v9fs_super_ops_dotl;
 
@@ -65,7 +68,7 @@ static int v9fs_set_super(struct super_block *s, void *data)
  * v9fs_fill_super - populate superblock with info
  * @sb: superblock
  * @v9ses: session information
- * @flags: flags propagated from v9fs_get_sb()
+ * @flags: flags propagated from v9fs_mount()
  *
  */
 
@@ -77,37 +80,40 @@ v9fs_fill_super(struct super_block *sb, struct v9fs_session_info *v9ses,
 	sb->s_blocksize_bits = fls(v9ses->maxdata - 1);
 	sb->s_blocksize = 1 << sb->s_blocksize_bits;
 	sb->s_magic = V9FS_MAGIC;
-	if (v9fs_proto_dotl(v9ses))
+	if (v9fs_proto_dotl(v9ses)) {
 		sb->s_op = &v9fs_super_ops_dotl;
-	else
+		sb->s_xattr = v9fs_xattr_handlers;
+	} else
 		sb->s_op = &v9fs_super_ops;
 	sb->s_bdi = &v9ses->bdi;
 
 	sb->s_flags = flags | MS_ACTIVE | MS_SYNCHRONOUS | MS_DIRSYNC |
 	    MS_NOATIME;
 
+#ifdef CONFIG_9P_FS_POSIX_ACL
+	if ((v9ses->flags & V9FS_ACCESS_MASK) == V9FS_ACCESS_CLIENT)
+		sb->s_flags |= MS_POSIXACL;
+#endif
+
 	save_mount_options(sb, data);
 }
 
 /**
- * v9fs_get_sb - mount a superblock
+ * v9fs_mount - mount a superblock
  * @fs_type: file system type
  * @flags: mount flags
  * @dev_name: device name that was mounted
  * @data: mount options
- * @mnt: mountpoint record to be instantiated
  *
  */
 
-static int v9fs_get_sb(struct file_system_type *fs_type, int flags,
-		       const char *dev_name, void *data,
-		       struct vfsmount *mnt)
+static struct dentry *v9fs_mount(struct file_system_type *fs_type, int flags,
+		       const char *dev_name, void *data)
 {
 	struct super_block *sb = NULL;
 	struct inode *inode = NULL;
 	struct dentry *root = NULL;
 	struct v9fs_session_info *v9ses = NULL;
-	struct p9_wstat *st = NULL;
 	int mode = S_IRWXUGO | S_ISVTX;
 	struct p9_fid *fid;
 	int retval = 0;
@@ -116,24 +122,22 @@ static int v9fs_get_sb(struct file_system_type *fs_type, int flags,
 
 	v9ses = kzalloc(sizeof(struct v9fs_session_info), GFP_KERNEL);
 	if (!v9ses)
-		return -ENOMEM;
+		return ERR_PTR(-ENOMEM);
 
 	fid = v9fs_session_init(v9ses, dev_name, data);
 	if (IS_ERR(fid)) {
 		retval = PTR_ERR(fid);
+		/*
+		 * we need to call session_close to tear down some
+		 * of the data structure setup by session_init
+		 */
 		goto close_session;
 	}
 
-	st = p9_client_stat(fid);
-	if (IS_ERR(st)) {
-		retval = PTR_ERR(st);
-		goto clunk_fid;
-	}
-
 	sb = sget(fs_type, NULL, v9fs_set_super, v9ses);
 	if (IS_ERR(sb)) {
 		retval = PTR_ERR(sb);
-		goto free_stat;
+		goto clunk_fid;
 	}
 	v9fs_fill_super(sb, v9ses, flags, data);
 
@@ -149,37 +153,56 @@ static int v9fs_get_sb(struct file_system_type *fs_type, int flags,
 		retval = -ENOMEM;
 		goto release_sb;
 	}
-
 	sb->s_root = root;
-	root->d_inode->i_ino = v9fs_qid2ino(&st->qid);
+	if (v9fs_proto_dotl(v9ses)) {
+		struct p9_stat_dotl *st = NULL;
+		st = p9_client_getattr_dotl(fid, P9_STATS_BASIC);
+		if (IS_ERR(st)) {
+			retval = PTR_ERR(st);
+			goto release_sb;
+		}
 
-	v9fs_stat2inode(st, root->d_inode, sb);
+		v9fs_stat2inode_dotl(st, root->d_inode);
+		kfree(st);
+	} else {
+		struct p9_wstat *st = NULL;
+		st = p9_client_stat(fid);
+		if (IS_ERR(st)) {
+			retval = PTR_ERR(st);
+			goto release_sb;
+		}
 
-	v9fs_fid_add(root, fid);
-	p9stat_free(st);
-	kfree(st);
+		root->d_inode->i_ino = v9fs_qid2ino(&st->qid);
+		v9fs_stat2inode(st, root->d_inode, sb);
 
-P9_DPRINTK(P9_DEBUG_VFS, " simple set mount, return 0\n");
-	simple_set_mnt(mnt, sb);
-	return 0;
+		p9stat_free(st);
+		kfree(st);
+	}
+	retval = v9fs_get_acl(inode, fid);
+	if (retval)
+		goto release_sb;
+	v9fs_fid_add(root, fid);
 
-free_stat:
-	p9stat_free(st);
-	kfree(st);
+	P9_DPRINTK(P9_DEBUG_VFS, " simple set mount, return 0\n");
+	return dget(sb->s_root);
 
 clunk_fid:
 	p9_client_clunk(fid);
-
 close_session:
 	v9fs_session_close(v9ses);
 	kfree(v9ses);
-	return retval;
+	return ERR_PTR(retval);
 
 release_sb:
-	p9stat_free(st);
-	kfree(st);
+	/*
+	 * we will do the session_close and root dentry release
+	 * in the below call. But we need to clunk fid, because we haven't
+	 * attached the fid to dentry so it won't get clunked
+	 * automatically.
+	 */
+	p9_client_clunk(fid);
 	deactivate_locked_super(sb);
-	return retval;
+	return ERR_PTR(retval);
 }
 
 /**
@@ -232,7 +255,7 @@ static int v9fs_statfs(struct dentry *dentry, struct kstatfs *buf)
 	if (v9fs_proto_dotl(v9ses)) {
 		res = p9_client_statfs(fid, &rs);
 		if (res == 0) {
-			buf->f_type = rs.type;
+			buf->f_type = V9FS_MAGIC;
 			buf->f_bsize = rs.bsize;
 			buf->f_blocks = rs.blocks;
 			buf->f_bfree = rs.bfree;
@@ -257,7 +280,7 @@ static const struct super_operations v9fs_super_ops = {
 	.destroy_inode = v9fs_destroy_inode,
 #endif
 	.statfs = simple_statfs,
-	.clear_inode = v9fs_clear_inode,
+	.evict_inode = v9fs_evict_inode,
 	.show_options = generic_show_options,
 	.umount_begin = v9fs_umount_begin,
 };
@@ -268,14 +291,15 @@ static const struct super_operations v9fs_super_ops_dotl = {
 	.destroy_inode = v9fs_destroy_inode,
 #endif
 	.statfs = v9fs_statfs,
-	.clear_inode = v9fs_clear_inode,
+	.evict_inode = v9fs_evict_inode,
 	.show_options = generic_show_options,
 	.umount_begin = v9fs_umount_begin,
 };
 
 struct file_system_type v9fs_fs_type = {
 	.name = "9p",
-	.get_sb = v9fs_get_sb,
+	.mount = v9fs_mount,
 	.kill_sb = v9fs_kill_super,
 	.owner = THIS_MODULE,
+	.fs_flags = FS_RENAME_DOES_D_MOVE,
 };