D29108.diff
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	diff --git a/sys/compat/linux/linux_file.c b/sys/compat/linux/linux_file.c
	--- a/sys/compat/linux/linux_file.c
	+++ b/sys/compat/linux/linux_file.c
	@@ -1740,12 +1740,17 @@
	char *path;
	int error, dfd, flag;

	- if (args->flag & ~LINUX_AT_SYMLINK_NOFOLLOW)
	+ if (args->flag & ~(LINUX_AT_SYMLINK_NOFOLLOW \| LINUX_AT_EMPTY_PATH)) {
	+ linux_msg(td, "fchownat unsupported flag 0x%x", args->flag);
	return (EINVAL);
	+ }

	- dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
	flag = (args->flag & LINUX_AT_SYMLINK_NOFOLLOW) == 0 ? 0 :
	AT_SYMLINK_NOFOLLOW;
	+ flag \|= (args->flag & LINUX_AT_EMPTY_PATH) == 0 ? 0 :
	+ AT_EMPTY_PATH;
	+
	+ dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
	if (!LUSECONVPATH(td)) {
	return (kern_fchownat(td, dfd, args->filename, UIO_USERSPACE,
	args->uid, args->gid, flag));