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evdev: prevent unterminated device name

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The kernel copies up to sizeof(devname) bytes but doesn't null-terminate the
string if the device name exceeds the size of the supplied buffer.
This commit is contained in:
Peter Hutterer 2013-08-07 11:04:41 +10:00 • committed by Jonas Ådahl
parent 297bac9802
commit 756785ec3e
1 changed files with 1 additions and 0 deletions
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src/evdev.c
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@ -575,6 +575,7 @@ evdev_device_create(struct weston_seat *seat, const char *path, int device_fd)
device->fd = device_fd; device->fd = device_fd;
ioctl(device->fd, EVIOCGNAME(sizeof(devname)), devname); ioctl(device->fd, EVIOCGNAME(sizeof(devname)), devname);
devname[sizeof(devname) - 1] = '\0';
device->devname = strdup(devname); device->devname = strdup(devname);
if (!evdev_handle_device(device)) { if (!evdev_handle_device(device)) {