From d199d652c513a010145a5a0d4e64c96361b97bee Mon Sep 17 00:00:00 2001
From: Anthony Liguori <aliguori@us.ibm.com>
Date: Wed, 6 Feb 2008 19:25:06 -0600
Subject: [PATCH] 9p: add support for sticky bit
GDM gets unhappy if /var/gdm doesn't have the sticky bit set. This patch adds
support for the sticky bit in much the same way setuid/setgid is supported.
With this patch, I can launch X from a v9fs rootfs (although I quickly run out
of fds in the server once gnome starts up).
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Acked-by: Eric Van Hensbergen <ericvh@gmail.com>
---
fs/9p/vfs_inode.c | 5 +++++
include/net/9p/9p.h | 1 +
2 files changed, 6 insertions(+)
diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index 23581bcb599b2..5c5137c11484d 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -77,6 +77,8 @@ static int unixmode2p9mode(struct v9fs_session_info *v9ses, int mode)
res |= P9_DMSETUID;
if ((mode & S_ISGID) == S_ISGID)
res |= P9_DMSETGID;
+ if ((mode & S_ISVTX) == S_ISVTX)
+ res |= P9_DMSETVTX;
if ((mode & P9_DMLINK))
res |= P9_DMLINK;
}
@@ -119,6 +121,9 @@ static int p9mode2unixmode(struct v9fs_session_info *v9ses, int mode)
if ((mode & P9_DMSETGID) == P9_DMSETGID)
res |= S_ISGID;
+
+ if ((mode & P9_DMSETVTX) == P9_DMSETVTX)
+ res |= S_ISVTX;
}
return res;
diff --git a/include/net/9p/9p.h b/include/net/9p/9p.h
index 625346c47ee2e..585eb4496990d 100644
--- a/include/net/9p/9p.h
+++ b/include/net/9p/9p.h
@@ -124,6 +124,7 @@ enum {
P9_DMSOCKET = 0x00100000,
P9_DMSETUID = 0x00080000,
P9_DMSETGID = 0x00040000,
+ P9_DMSETVTX = 0x00010000,
};
/* qid.types */
--
GitLab