From: Benjamin Franzke <benjaminfranzke@googlemail.com>
Date: Tue, 24 Jan 2012 15:37:15 +0000 (+0100)
Subject: weston: Drop priviledges early, and seteuid when needed
X-Git-Tag: 0.1.0~163^2~110
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f7968296c621ddcaeb637dde3ce24452ab20a958;p=platform%2Fupstream%2Flibinput.git

weston: Drop priviledges early, and seteuid when needed
---

diff --git a/src/evdev.c b/src/evdev.c
index f489ede..101b63f 100644
--- a/src/evdev.c
+++ b/src/evdev.c
@@ -20,6 +20,8 @@
  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+#define _GNU_SOURCE
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -439,6 +441,7 @@ evdev_input_device_create(struct evdev_input *master,
 	struct evdev_input_device *device;
 	struct wl_event_loop *loop;
 	struct weston_compositor *ec;
+	uid_t saved_uid, uid, euid;
 
 	device = malloc(sizeof *device);
 	if (device == NULL)
@@ -456,7 +459,10 @@ evdev_input_device_create(struct evdev_input *master,
 	device->rel.dx = 0;
 	device->rel.dy = 0;
 
+	getresuid(&uid, &euid, &saved_uid);
+	seteuid(saved_uid);
 	device->fd = open(path, O_RDONLY);
+	seteuid(euid);
 	if (device->fd < 0)
 		goto err0;