TIOCSLCKTRMIOS(2const) TIOCSLCKTRMIOS(2const)
NAME
TIOCGLCKTRMIOS, TIOCSLCKTRMIOS - locking the termios structre
LIBRARY
Standard C library (libc, -lc)
SYNOPSIS
#include <asm/termbits.h> /* Definition of TIOC*CLKTRMIOS constants */
#include <sys/ioctl.h>
int ioctl(int fd, TIOCGLCKTRMIOS, struct termios *argp);
int ioctl(int fd, TIOCSLCKTRMIOS, const struct termios *argp);
#include <asm/termbits.h>
struct termios;
DESCRIPTION
The termios structure of a terminal can be locked. The lock is itself a
termios structure, with nonzero bits or fields indicating a locked
value.
TIOCGLCKTRMIOS
Gets the locking status of the termios structure of the terminal.
TIOCSLCKTRMIOS
Sets the locking status of the termios structure of the terminal.
Only a process with the CAP_SYS_ADMIN capability can do this.
RETURN VALUE
On success, 0 is returned. On error, -1 is returned, and errno is set
to indicate the error.
ERRORS
EPERM Insufficient permission.
CAVEATS
Please note that struct termios from <asm/termbits.h> is different and
incompatible with struct termios from <termios.h>. These ioctl calls
require struct termios from <asm/termbits.h>.
SEE ALSO
ioctl(2), ioctl_tty(2), TCSETS(2const)
Linux man-pages 6.9.1 2024-06-13 TIOCSLCKTRMIOS(2const)
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