int chvt(int vt) {
_cleanup_close_ int fd;
- fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC);
+ fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC|O_NONBLOCK);
if (fd < 0)
return -errno;
* interfere with that. */
/* Disable exclusive mode, just in case */
- ioctl(fd, TIOCNXCL);
+ (void) ioctl(fd, TIOCNXCL);
/* Switch to text mode */
if (switch_to_text)
- ioctl(fd, KDSETMODE, KD_TEXT);
+ (void) ioctl(fd, KDSETMODE, KD_TEXT);
/* Enable console unicode mode */
- ioctl(fd, KDSKBMODE, K_UNICODE);
+ (void) ioctl(fd, KDSKBMODE, K_UNICODE);
if (tcgetattr(fd, &termios) < 0) {
r = -errno;
finish:
/* Just in case, flush all crap out */
- tcflush(fd, TCIOFLUSH);
+ (void) tcflush(fd, TCIOFLUSH);
return r;
}
int reset_terminal(const char *name) {
_cleanup_close_ int fd = -1;
- fd = open_terminal(name, O_RDWR|O_NOCTTY|O_CLOEXEC);
+ /* We open the terminal with O_NONBLOCK here, to ensure we
+ * don't block on carrier if this is a terminal with carrier
+ * configured. */
+
+ fd = open_terminal(name, O_RDWR|O_NOCTTY|O_CLOEXEC|O_NONBLOCK);
if (fd < 0)
return fd;
* https://bugs.launchpad.net/ubuntu/+source/linux/+bug/554172/comments/245
*/
- assert(!(mode & O_CREAT));
+ if (mode & O_CREAT)
+ return -EINVAL;
for (;;) {
fd = open(name, mode, 0);
if (r < 0 && r == -EPERM && ignore_tiocstty_eperm)
r = 0;
- if (r < 0 && (force || fail || r != -EPERM)) {
+ if (r < 0 && (force || fail || r != -EPERM))
goto fail;
- }
if (r >= 0)
break;
struct sigaction sa_old;
int r = 0;
- fd = open("/dev/tty", O_RDWR|O_NOCTTY|O_NDELAY|O_CLOEXEC);
+ fd = open("/dev/tty", O_RDWR|O_NOCTTY|O_CLOEXEC|O_NONBLOCK);
if (fd < 0)
return -errno;
int terminal_vhangup(const char *name) {
_cleanup_close_ int fd;
- fd = open_terminal(name, O_RDWR|O_NOCTTY|O_CLOEXEC);
+ fd = open_terminal(name, O_RDWR|O_NOCTTY|O_CLOEXEC|O_NONBLOCK);
if (fd < 0)
return fd;
return -EINVAL;
/* Try to deallocate */
- fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC);
+ fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC|O_NONBLOCK);
if (fd < 0)
return fd;
/* Yeah, this is synchronous. Kinda sucks. But well... */
- ioctl(fd, KIOCSOUND, (int)(1193180/440));
+ (void) ioctl(fd, KIOCSOUND, (int)(1193180/440));
usleep(125*USEC_PER_MSEC);
- ioctl(fd, KIOCSOUND, (int)(1193180/220));
+ (void) ioctl(fd, KIOCSOUND, (int)(1193180/220));
usleep(125*USEC_PER_MSEC);
- ioctl(fd, KIOCSOUND, (int)(1193180/220));
+ (void) ioctl(fd, KIOCSOUND, (int)(1193180/220));
usleep(125*USEC_PER_MSEC);
- ioctl(fd, KIOCSOUND, 0);
+ (void) ioctl(fd, KIOCSOUND, 0);
}
/// UNNEEDED by elogind