unlockpt(3) [linux man page]
UNLOCKPT(3) Linux Programmer's Manual UNLOCKPT(3) NAME
unlockpt - unlock a pseudo-terminal master/slave pair SYNOPSIS
#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
This page is part of release 3.27 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/. 2008-06-14 UNLOCKPT(3)
Check Out this Related Man Page
UNLOCKPT(3) Linux Programmer's Manual UNLOCKPT(3) NAME
unlockpt - unlock a pseudo-terminal master/slave pair SYNOPSIS
#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
This page is part of release 3.25 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/. 2008-06-14 UNLOCKPT(3)