From bf49b0e5f508b0d0beb7ac01b567a2b9772cc1ff Mon Sep 17 00:00:00 2001
From: Jakub Klama <jakub@ixsystems.com>
Date: Wed, 3 Feb 2016 10:05:24 +0100
Subject: [PATCH] Import changes from lib9p repo:

- Integrate (slightly modified) pull request #1 from ailispaw.
  (https://github.com/jceel/xhyve/pull/1)
- Populate file->gid from parent fid.
---
 lib9p/backend/fs.c | 25 +++++++++++++------------
 1 file changed, 13 insertions(+), 12 deletions(-)

diff --git a/lib9p/backend/fs.c b/lib9p/backend/fs.c
index 9248764..e410368 100644
--- a/lib9p/backend/fs.c
+++ b/lib9p/backend/fs.c
@@ -536,9 +536,16 @@ fs_remove(void *softc, struct l9p_request *req)
 		return;
 	}
 
-	if (unlink(file->name) != 0) {
-		l9p_respond(req, errno);
-		return;
+	if (S_ISDIR(st.st_mode)) {
+		if (rmdir(file->name) != 0) {
+			l9p_respond(req, errno);
+			return;
+		}
+	} else {
+		if (unlink(file->name) != 0) {
+			l9p_respond(req, errno);
+			return;
+		}
 	}
 
 	l9p_respond(req, 0);
@@ -584,6 +591,7 @@ fs_walk(void *softc __unused, struct l9p_request *req)
 
 	newfile = open_fid(name);
 	newfile->uid = file->uid;
+	newfile->gid = file->gid;
 	req->lr_newfid->lo_aux = newfile;
 	req->lr_resp.rwalk.nwqid = i;
 	l9p_respond(req, 0);
@@ -682,15 +690,8 @@ fs_wstat(void *softc, struct l9p_request *req)
 		}
 	}
 
-	if (l9stat->n_uid != (uid_t)~0) {
-		if (lchown(file->name, l9stat->n_uid, (gid_t)-1) != 0) {
-			l9p_respond(req, errno);
-			return;
-		}
-	}
-
-	if (l9stat->n_gid != (uid_t)~0) {
-		if (lchown(file->name, (uid_t)-1, l9stat->n_gid) != 0) {
+	if (req->lr_conn->lc_version >= L9P_2000U) {
+		if (lchown(file->name, l9stat->n_uid, l9stat->n_gid) != 0) {
 			l9p_respond(req, errno);
 			return;
 		}