module: zfs: freebsd: vfsops: use setgen for error case

Based on http://build.zfsonlinux.org/builders/FreeBSD%20stable%2F13%20amd64%20%28TEST%29/builds/2977/steps/shell_1/logs/make Fix from #12844 (comment) Signed-off-by: Ahelenia Ziemiańska <[email protected]>
openzfs · Dec 22, 2021 · 1c455ba · 1c455ba
1 parent 9ba5d8d
commit 1c455ba
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/module/os/freebsd/zfs/zfs_vfsops.c b/module/os/freebsd/zfs/zfs_vfsops.c
@@ -1835,6 +1835,12 @@ zfs_fhtovp(vfs_t *vfsp, fid_t *fidp, int flags, vnode_t **vpp)
 		return (SET_ERROR(EINVAL));
 	}
 
+	if (fid_gen > 1 || setgen != 0) {
+		dprintf("snapdir fid: fid_gen (%llu) and setgen (%llu)\n",
+		    fid_gen, setgen);
+		return (SET_ERROR(EINVAL));
+	}
+
 	/*
 	 * A zero fid_gen means we are in .zfs or the .zfs/snapshot
 	 * directory tree. If the object == zfsvfs->z_shares_dir, then