Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (57 commits)
  tidy the trailing symlinks traversal up
  Turn resolution of trailing symlinks iterative everywhere
  simplify link_path_walk() tail
  Make trailing symlink resolution in path_lookupat() iterative
  update nd->inode in __do_follow_link() instead of after do_follow_link()
  pull handling of one pathname component into a helper
  fs: allow AT_EMPTY_PATH in linkat(), limit that to CAP_DAC_READ_SEARCH
  Allow passing O_PATH descriptors via SCM_RIGHTS datagrams
  readlinkat(), fchownat() and fstatat() with empty relative pathnames
  Allow O_PATH for symlinks
  New kind of open files - "location only".
  ext4: Copy fs UUID to superblock
  ext3: Copy fs UUID to superblock.
  vfs: Export file system uuid via /proc/<pid>/mountinfo
  unistd.h: Add new syscalls numbers to asm-generic
  x86: Add new syscalls for x86_64
  x86: Add new syscalls for x86_32
  fs: Remove i_nlink check from file system link callback
  fs: Don't allow to create hardlink for deleted file
  vfs: Add open by file handle support
  ...

1 files changed, 23 insertions, 38 deletions

diff --git a/fs/compat.c b/fs/compat.c
index 691c3fd8ce1d..c6d31a3bab88 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -262,35 +262,19 @@ static int put_compat_statfs(struct compat_statfs __user *ubuf, struct kstatfs *
  */
 asmlinkage long compat_sys_statfs(const char __user *pathname, struct compat_statfs __user *buf)
 {
-        struct path path;
-        int error;
-
-        error = user_path(pathname, &path);
-        if (!error) {
-                struct kstatfs tmp;
-                error = vfs_statfs(&path, &tmp);
-                if (!error)
-                        error = put_compat_statfs(buf, &tmp);
-                path_put(&path);
-        }
+        struct kstatfs tmp;
+        int error = user_statfs(pathname, &tmp);
+        if (!error)
+                error = put_compat_statfs(buf, &tmp);
         return error;
 }
 
 asmlinkage long compat_sys_fstatfs(unsigned int fd, struct compat_statfs __user *buf)
 {
-        struct file * file;
         struct kstatfs tmp;
-        int error;
-
-        error = -EBADF;
-        file = fget(fd);
-        if (!file)
-                goto out;
-        error = vfs_statfs(&file->f_path, &tmp);
+        int error = fd_statfs(fd, &tmp);
         if (!error)
                 error = put_compat_statfs(buf, &tmp);
-        fput(file);
-out:
         return error;
 }
 
@@ -329,41 +313,29 @@ static int put_compat_statfs64(struct compat_statfs64 __user *ubuf, struct kstat
 
 asmlinkage long compat_sys_statfs64(const char __user *pathname, compat_size_t sz, struct compat_statfs64 __user *buf)
 {
-        struct path path;
+        struct kstatfs tmp;
         int error;
 
         if (sz != sizeof(*buf))
                 return -EINVAL;
 
-        error = user_path(pathname, &path);
-        if (!error) {
-                struct kstatfs tmp;
-                error = vfs_statfs(&path, &tmp);
-                if (!error)
-                        error = put_compat_statfs64(buf, &tmp);
-                path_put(&path);
-        }
+        error = user_statfs(pathname, &tmp);
+        if (!error)
+                error = put_compat_statfs64(buf, &tmp);
         return error;
 }
 
 asmlinkage long compat_sys_fstatfs64(unsigned int fd, compat_size_t sz, struct compat_statfs64 __user *buf)
 {
-        struct file * file;
         struct kstatfs tmp;
         int error;
 
         if (sz != sizeof(*buf))
                 return -EINVAL;
 
-        error = -EBADF;
-        file = fget(fd);
-        if (!file)
-                goto out;
-        error = vfs_statfs(&file->f_path, &tmp);
+        error = fd_statfs(fd, &tmp);
         if (!error)
                 error = put_compat_statfs64(buf, &tmp);
-        fput(file);
-out:
         return error;
 }
 
@@ -2312,3 +2284,16 @@ asmlinkage long compat_sys_timerfd_gettime(int ufd,
 }
 
 #endif /* CONFIG_TIMERFD */
+
+#ifdef CONFIG_FHANDLE
+/*
+ * Exactly like fs/open.c:sys_open_by_handle_at(), except that it
+ * doesn't set the O_LARGEFILE flag.
+ */
+asmlinkage long
+compat_sys_open_by_handle_at(int mountdirfd,
+                             struct file_handle __user *handle, int flags)
+{
+        return do_handle_open(mountdirfd, handle, flags);
+}
+#endif