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weston: Drop priviledges early, and seteuid when needed

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Benjamin Franzke 2012-01-24 16:37:15 +01:00 • committed by Jonas Ådahl
parent 67b11f7a8d
commit f7968296c6
1 changed files with 6 additions and 0 deletions
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6
src/evdev.c
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@ -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;