diff options
| author | Kenny Levinsen <kl@kl.wtf> | 2020-08-01 03:23:56 +0200 |
|---|---|---|
| committer | Kenny Levinsen <kl@kl.wtf> | 2020-08-01 16:53:44 +0200 |
| commit | e129536a08a74045719640676b55a03b926117d9 (patch) | |
| tree | 790d460b307479842d16ecb0ab89fbc7eb3a0752 /common/evdev.c | |
| parent | dc9c7bff71cb843c6ba7b68e977d130ae8098201 (diff) | |
devices: Use path to check device type
FreeBSD device numbers cannot be used to check the type of a device, as
they are merely unique filesystem IDs.
As the paths we use have been sanitized with realpath, we can simply use
the path to check if a requested file is an evdev or drm device. This
also allows us to make the check before the file is opened.
Diffstat (limited to 'common/evdev.c')
| -rw-r--r-- | common/evdev.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/common/evdev.c b/common/evdev.c index f3b39c6..69c368d 100644 --- a/common/evdev.c +++ b/common/evdev.c @@ -1,9 +1,11 @@ #include <stdlib.h> +#include <string.h> #include <sys/ioctl.h> #include <sys/types.h> #if defined(__linux__) #include <linux/input.h> +#include <linux/major.h> #include <sys/sysmacros.h> #elif defined(__FreeBSD__) #include <dev/evdev/input.h> @@ -11,12 +13,21 @@ #error Unsupported platform #endif +#include "compiler.h" #include "evdev.h" +int path_is_evdev(const char *path) { + static const char prefix[] = "/dev/input/event"; + static const size_t prefixlen = STRLEN(prefix); + return strncmp(prefix, path, prefixlen) == 0; +} + int evdev_revoke(int fd) { return ioctl(fd, EVIOCREVOKE, NULL); } +#if defined(__linux__) int dev_is_evdev(dev_t device) { - return major(device) == 13; + return major(device) == INPUT_MAJOR; } +#endif |