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devices: Use path to check device type

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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.
This commit is contained in:
Kenny Levinsen 2020-08-01 03:23:56 +02:00
parent dc9c7bff71
commit e129536a08
7 changed files with 102 additions and 46 deletions
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2
include/compiler.h
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@ -15,4 +15,6 @@
#define ALWAYS_INLINE inline
#endif
#define STRLEN(s) ((sizeof(s) / sizeof(s[0])) - 1)
#endif

7
include/drm.h
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@ -1,10 +1,13 @@
#ifndef _SEATD_DRM_H
#define _SEATD_DRM_H
#include <sys/types.h>
int drm_set_master(int fd);
int drm_drop_master(int fd);
int path_is_drm(const char *path);
#if defined(__linux__)
#include <sys/types.h>
int dev_is_drm(dev_t device);
#endif
#endif

7
include/evdev.h
View file

@ -1,9 +1,12 @@
#ifndef _SEATD_EVDEV_H
#define _SEATD_EVDEV_H
#include <sys/types.h>
int evdev_revoke(int fd);
int path_is_evdev(const char *path);
#if defined(__linux__)
#include <sys/types.h>
int dev_is_evdev(dev_t device);
#endif
#endif

8
include/seat.h
View file

@ -8,13 +8,19 @@
struct client;
enum seat_device_type {
SEAT_DEVICE_TYPE_NORMAL,
SEAT_DEVICE_TYPE_EVDEV,
SEAT_DEVICE_TYPE_DRM,
};
struct seat_device {
int device_id;
int fd;
int ref_cnt;
bool active;
char *path;
dev_t dev;
enum seat_device_type type;
};
struct seat {