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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)
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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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