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Commit f46d3567 authored by Jeff Layton's avatar Jeff Layton Committed by Al Viro
Browse files

vfs: fix symlinkat to retry on ESTALE errors 



Signed-off-by: default avatarJeff Layton <jlayton@redhat.com>
Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent b76d8b82

fs/namei.c

+7 −2
Original line number Diff line number Diff line
@@ -3521,12 +3521,13 @@ SYSCALL_DEFINE3(symlinkat, const char __user *, oldname, 
	struct filename *from;

	struct dentry *dentry;

	struct path path;

	unsigned int lookup_flags = 0;



	from = getname(oldname);

	if (IS_ERR(from))

		return PTR_ERR(from);



	dentry = user_path_create(newdfd, newname, &path, 0);

retry:

	dentry = user_path_create(newdfd, newname, &path, lookup_flags);

	error = PTR_ERR(dentry);

	if (IS_ERR(dentry))

		goto out_putname;
@@ -3535,6 +3536,10 @@ SYSCALL_DEFINE3(symlinkat, const char __user *, oldname, 
	if (!error)

		error = vfs_symlink(path.dentry->d_inode, dentry, from->name);

	done_path_create(&path, dentry);

	if (retry_estale(error, lookup_flags)) {

		lookup_flags |= LOOKUP_REVAL;

		goto retry;

	}

out_putname:

	putname(from);

	return error;