e129536a08
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.
33 lines
685 B
C
33 lines
685 B
C
#include <stdlib.h>
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#include <string.h>
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#include <sys/ioctl.h>
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#include <sys/types.h>
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#if defined(__linux__)
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#include <linux/input.h>
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#include <linux/major.h>
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#include <sys/sysmacros.h>
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#elif defined(__FreeBSD__)
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#include <dev/evdev/input.h>
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#else
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#error Unsupported platform
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#endif
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#include "compiler.h"
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#include "evdev.h"
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int path_is_evdev(const char *path) {
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static const char prefix[] = "/dev/input/event";
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static const size_t prefixlen = STRLEN(prefix);
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return strncmp(prefix, path, prefixlen) == 0;
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}
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int evdev_revoke(int fd) {
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return ioctl(fd, EVIOCREVOKE, NULL);
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}
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#if defined(__linux__)
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int dev_is_evdev(dev_t device) {
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return major(device) == INPUT_MAJOR;
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}
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#endif
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