GNU/Linux |
CentOS 5.1 |
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unlockpt(3) |
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unlockpt − unlock a pseudo-terminal master/slave pair
#define
_XOPEN_SOURCE
#include <stdlib.h>
int unlockpt(int fd);
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.
When successful, unlockpt() returns 0. Otherwise, it returns −1 and sets errno appropriately.
EBADF |
The fd argument is not a file descriptor open for writing. | ||
EINVAL |
The fd argument is not associated with a master pty. |
POSIX.1-2001.
grantpt(3), posix_openpt(3), ptsname(3), pts(4), pty(7)
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unlockpt(3) | ![]() |