/** * Copyright © 2014 Mattias Andrée (maandree@member.fsf.org) * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Affero General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see . */ #include #include #include #include #include #include #include #include #include #include #ifndef PATH_MAX #define PATH_MAX 4096 #endif /* Requires video group */ /** * Get the number of cards present on the system * * @return The number of cards present on the system */ long blueshift_drm_card_count() { char* pathname = alloca(PATH_MAX * sizeof(char)); long len = strlen("/dev/dri/card"); long count = 0; struct stat attr; memcpy(pathname, "/dev/dri/card", len); for (;;) { sprintf(pathname + len, "%li", count); if (stat(pathname, &attr)) break; count++; } return count; } int main(int argc, char** argv) { (void) argc; (void) argv; printf("%li\n", blueshift_drm_card_count()); return 0; }