TIOCEXCL, TIOCGEXCL, TIOCNXCL
exclusive mode
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- Source: manpages
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LIBRARY
Standard C library (libc, -lc)
SYNOPSIS
#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
- 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.