From a1d71cebc05ccfeedf95f2db3e94b17270167888 Mon Sep 17 00:00:00 2001 From: Konstantin Belousov Date: Tue, 2 May 2023 18:11:39 +0300 Subject: [PATCH] fstatat(2): restore AT_EMPTY_PATH handling Fixes: cb858340dcbf214cc4c4d78dbb741620d7b3a252 Reported by: markj Sponsored by: The FreeBSD Foundation --- sys/kern/vfs_syscalls.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/sys/kern/vfs_syscalls.c b/sys/kern/vfs_syscalls.c index 5c0a291e3b0b..d68af4ea4d51 100644 --- a/sys/kern/vfs_syscalls.c +++ b/sys/kern/vfs_syscalls.c @@ -2438,8 +2438,12 @@ kern_statat(struct thread *td, int flag, int fd, const char *path, AT_SYMLINK_NOFOLLOW | AT_EMPTY_PATH) | LOCKSHARED | LOCKLEAF | AUDITVNODE1, pathseg, path, fd, &cap_fstat_rights); - if ((error = namei(&nd)) != 0) + if ((error = namei(&nd)) != 0) { + if (error == ENOTDIR && + (nd.ni_resflags & NIRES_EMPTYPATH) != 0) + error = kern_fstat(td, fd, sbp); return (error); + } error = VOP_STAT(nd.ni_vp, sbp, td->td_ucred, NOCRED); NDFREE_PNBUF(&nd); vput(nd.ni_vp);