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TIOCEXCL(2const) — Linux manual page

NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUE | HISTORY | SEE ALSO | COLOPHON 

TIOCEXCL(2const)                                        TIOCEXCL(2const)

NAME         top

       TIOCEXCL, TIOCGEXCL, TIOCNXCL - exclusive mode

LIBRARY         top

       Standard C library (libc, -lc)

SYNOPSIS         top

       #include <asm/termbits.h>  /* Definition of TIOC*XCL constants */
       #include <sys/ioctl.h>

       int ioctl(int fd, TIOCEXCL);
       int ioctl(int fd, TIOCGEXCL, int *argp);
       int ioctl(int fd, TIOCNXCL);

DESCRIPTION         top

       TIOCEXCL
              Put the terminal into exclusive mode.  No further open(2)
              operations on the terminal are permitted.  (They fail with
              EBUSY, except for a process with the CAP_SYS_ADMIN
              capability.)

       TIOCGEXCL
              If the terminal is currently in exclusive mode, place a
              nonzero value in the location pointed to by argp;
              otherwise, place zero in *argp.

       TIOCNXCL
              Disable exclusive mode.

RETURN VALUE         top

       On success, 0 is returned.  On error, -1 is returned, and errno
       is set to indicate the error.

HISTORY         top

       TIOCGEXCL
              Linux 3.8.

SEE ALSO         top

       ioctl(2), ioctl_tty(2)

COLOPHON         top

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Linux man-pages 6.9.1          2024-06-13               TIOCEXCL(2const)

Pages that refer to this page: ioctl_tty(2)

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