Manpage of UNLOCKPT
UNLOCKPTSection: Linux Programmer's Manual (3)
NAMEunlockpt - unlock a pseudoterminal master/slave pair
#define _XOPEN_SOURCE /* See feature_test_macros(7) */
#include <stdlib.h>int unlockpt(int fd);
DESCRIPTIONThe unlockpt() function unlocks the slave pseudoterminal device corresponding to the master pseudoterminal referred to by fd.
RETURN VALUEWhen successful, unlockpt() returns 0. Otherwise, it returns -1 and sets errnoappropriately.
- The fdargument is not a file descriptor open for writing.
- The fdargument is not associated with a master pseudoterminal.
VERSIONSunlockpt() is provided in glibc since version 2.1.
ATTRIBUTESFor an explanation of the terms used in this section, see attributes(7).
CONFORMING TOPOSIX.1-2001, POSIX.1-2008.
SEE ALSOgrantpt(3), posix_openpt(3), ptsname(3), pts(4), pty(7)
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