TIOCGEXCL

(2const)

exclusive mode

System callsmanpages-dev 6.9.1-1also documents TIOCEXCL, TIOCNXCL

#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);

LIBRARY

Standard C library (libc, -lc)

DESCRIPTION

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

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

HISTORY

TIOCGEXCL: Linux 3.8.

LIBRARY

DESCRIPTION

RETURN VALUE

HISTORY

See also