UNLOCKPTSection: Linux Programmer's Manual (3)Updated: 2003-01-30 |
NAME
unlockpt - unlock a pseudotty master/slave pairSYNOPSIS
#include <stdlib.h> int unlockpt(int fd);
DESCRIPTION
The unlockpt() function unlocks the slave pseudo-terminal device (pty) corresponding to the master pty referred to by fd.unlockpt() should be called before opening the slave side of a pty.
RETURN VALUE
When successful, unlockpt() returns 0. Otherwise, it returns -1 and sets errno appropriately.ERRORS
- EBADF
- The fd argument is not a file descriptor open for writing.
- EINVAL
- The fd argument is not associated with a master pty.
CONFORMING TO
POSIX 1003.1-2001.SEE ALSO
grantpt(3), ptsname(3)