NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | CAVEATS | SEE ALSO | COLOPHON |
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TIOCSLCKTRMIOS(2const) TIOCSLCKTRMIOS(2const)
TIOCGLCKTRMIOS, TIOCSLCKTRMIOS - locking the termios structre
Standard C library (libc, -lc)
#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;
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.
On success, 0 is returned. On error, -1 is returned, and errno is set to indicate the error.
EPERM Insufficient permission.
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>.
ioctl(2), ioctl_tty(2), TCSETS(2const)
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Linux man-pages 6.9.1 2024-06-13 TIOCSLCKTRMIOS(2const)
Pages that refer to this page: ioctl_tty(2)