GNU/Linux man pages
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GNU/Linux |
Debian 6.0.1(Squeeze) |
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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.
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EBADF |
The fd argument is not a file descriptor open for writing. | ||
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EINVAL |
The fd argument is not associated with a master pty. |
unlockpt() is provided in glibc since version 2.1.
POSIX.1-2001.
grantpt(3), posix_openpt(3), ptsname(3), pts(4), feature_test_macros(7), pty(7)
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/.
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unlockpt(3) | |