9p: add support for sticky bit (d199d652) · Commits · 戴 / test

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 −0

Original line number	Diff line number	Diff line
		@@ -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;

include/net/9p/9p.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -124,6 +124,7 @@ enum {
		P9_DMSOCKET = 0x00100000,
		P9_DMSETUID = 0x00080000,
		P9_DMSETGID = 0x00040000,
		P9_DMSETVTX = 0x00010000,
		};

		/* qid.types */

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