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vfs: replace calling i_op->readlink with vfs_readlink()

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Also check d_is_symlink() in callers instead of inode->i_op->readlink
because following patches will allow NULL ->readlink for symlinks.

Signed-off-by: Miklos Szeredi <[email protected]>
This commit is contained in:
Miklos Szeredi 2016-12-09 16:45:04 +01:00
commit fd4a0edf2a
6 changed files with 35 additions and 13 deletions
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8
fs/stat.c
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@ -329,12 +329,14 @@ retry:
struct inode *inode = d_backing_inode(path.dentry);
error = empty ? -ENOENT : -EINVAL;
if (inode->i_op->readlink) {
/*
* AFS mountpoints allow readlink(2) but are not symlinks
*/
if (d_is_symlink(path.dentry) || inode->i_op->readlink) {
error = security_inode_readlink(path.dentry);
if (!error) {
touch_atime(&path);
error = inode->i_op->readlink(path.dentry,
buf, bufsiz);
error = vfs_readlink(path.dentry, buf, bufsiz);
}
}
path_put(&path);