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unlockpt
Langue: en
Version: 2008-06-14 (debian - 07/07/09)
Section: 3 (Bibliothèques de fonctions)
NAME
unlockpt - unlock a pseudo-terminal master/slave pairSYNOPSIS
#define _XOPEN_SOURCE
#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.
VERSIONS
unlockpt() is provided in glibc since version 2.1.CONFORMING TO
POSIX.1-2001.SEE ALSO
grantpt(3), posix_openpt(3), ptsname(3), pts(4), feature_test_macros(7), pty(7)COLOPHON
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