Cross Reference: /systemd/src/basic/terminal-util.c

Lines Matching defs:tty
372         /* We use inotify to be notified when the tty is closed. We
378          * tty loses its controlling process. However, unless some
379          * rogue process uses TIOCNOTTY on /dev/tty *after* closing
380          * its tty otherwise this will not become a problem. As long
382          * on the same tty as an untrusted user this should not be a
416                  * successfully became the controlling process of the tty */
422                  * if we already own the tty. */
425                 /* First, try to get the tty */
490                 /* We close the tty fd here since if the old session
518         fd = open("/dev/tty", O_RDWR|O_NOCTTY|O_CLOEXEC|O_NONBLOCK);
581         if (!startswith(name, "/dev/tty"))
639 bool tty_is_vc(const char *tty) {
640         assert(tty);
642         return vtnr_from_tty(tty) >= 0;
645 bool tty_is_console(const char *tty) {
646         assert(tty);
648         if (startswith(tty, "/dev/"))
649                 tty += 5;
651         return streq(tty, "console");
654 int vtnr_from_tty(const char *tty) {
657         assert(tty);
659         if (startswith(tty, "/dev/"))
660                 tty += 5;
662         if (!startswith(tty, "tty") )
665         if (tty[3] < '0' || tty[3] > '9')
668         r = safe_atoi(tty+3, &i);
679         char *tty;
687         if (read_one_line_file("/sys/class/tty/console/active", active) < 0)
692         tty = strrchr(*active, ' ');
693         if (tty)
694                 tty++;
696                 tty = *active;
698         if (streq(tty, "tty0")) {
702                 if (read_one_line_file("/sys/class/tty/tty0/active", &tmp) >= 0) {
704                         tty = *active = tmp;
708         return tty;
711 bool tty_is_vc_resolve(const char *tty) {
714         assert(tty);
716         if (startswith(tty, "/dev/"))
717                 tty += 5;
719         if (streq(tty, "console")) {
720                 tty = resolve_dev_console(&active);
721                 if (!tty)
725         return tty_is_vc(tty);
728 const char *default_term_for_tty(const char *tty) {
729         return tty && tty_is_vc_resolve(tty) ? "TERM=linux" : "TERM=vt220";
890         if (streq(s, "tty")) {