From e129536a08a74045719640676b55a03b926117d9 Mon Sep 17 00:00:00 2001 From: Kenny Levinsen Date: Sat, 1 Aug 2020 03:23:56 +0200 Subject: 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. --- common/evdev.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) (limited to 'common/evdev.c') 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 +#include #include #include #if defined(__linux__) #include +#include #include #elif defined(__FreeBSD__) #include @@ -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 -- cgit v1.2.3