Matthieu Herrb
4b2ecdf936
XXX more work needed to manage VT switches and proper XXX fbtab(4) support to allow for non-root users
41 lines
1 KiB
C
41 lines
1 KiB
C
#include <string.h>
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#include <sys/ioctl.h>
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#include <sys/types.h>
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#include "drm.h"
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// From libdrm
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#define DRM_IOCTL_BASE 'd'
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#define DRM_IO(nr) _IO(DRM_IOCTL_BASE, nr)
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#define DRM_IOCTL_SET_MASTER DRM_IO(0x1e)
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#define DRM_IOCTL_DROP_MASTER DRM_IO(0x1f)
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#define STRLEN(s) ((sizeof(s) / sizeof(s[0])) - 1)
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#define STR_HAS_PREFIX(prefix, s) (strncmp(prefix, s, STRLEN(prefix)) == 0)
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int drm_set_master(int fd) {
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return ioctl(fd, DRM_IOCTL_SET_MASTER, 0);
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}
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int drm_drop_master(int fd) {
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return ioctl(fd, DRM_IOCTL_DROP_MASTER, 0);
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}
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#if defined(__linux__) || defined(__NetBSD__) || defined(__OpenBSD__)
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int path_is_drm(const char *path) {
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if (STR_HAS_PREFIX("/dev/dri/", path))
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return 1;
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return 0;
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}
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#elif defined(__FreeBSD__)
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int path_is_drm(const char *path) {
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if (STR_HAS_PREFIX("/dev/dri/", path))
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return 1;
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/* Some drivers have /dev/dri/X symlinked to /dev/drm/X */
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if (STR_HAS_PREFIX("/dev/drm/", path))
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return 1;
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return 0;
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}
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#else
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#error Unsupported platform
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#endif
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