vfs: make O_PATH file descriptors usable for 'fstat()'

[pandora-kernel.git] / fs / stat.c

diff --git a/fs/stat.c b/fs/stat.c
index 78a3aa8..7b21801 100644 (file)
--- a/fs/stat.c
+++ b/fs/stat.c
@@ -57,12 +57,13 @@ EXPORT_SYMBOL(vfs_getattr);
 
 int vfs_fstat(unsigned int fd, struct kstat *stat)
 {
-       struct file *f = fget(fd);
+       int fput_needed;
+       struct file *f = fget_raw_light(fd, &fput_needed);
        int error = -EBADF;
 
        if (f) {
                error = vfs_getattr(f->f_path.mnt, f->f_path.dentry, stat);
-               fput(f);
+               fput_light(f, fput_needed);
        }
        return error;
 }
@@ -294,15 +295,16 @@ SYSCALL_DEFINE4(readlinkat, int, dfd, const char __user *, pathname,
 {
        struct path path;
        int error;
+       int empty = 0;
 
        if (bufsiz <= 0)
                return -EINVAL;
 
-       error = user_path_at(dfd, pathname, LOOKUP_EMPTY, &path);
+       error = user_path_at_empty(dfd, pathname, LOOKUP_EMPTY, &path, &empty);
        if (!error) {
                struct inode *inode = path.dentry->d_inode;
 
-               error = -EINVAL;
+               error = empty ? -ENOENT : -EINVAL;
                if (inode->i_op->readlink) {
                        error = security_inode_readlink(path.dentry);
                        if (!error) {