GNU/Linux man pages
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GNU/Linux |
CentOS 3.1 |
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unlockpt(3) |
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unlockpt − unlock a pseudotty master/slave pair
#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. |
POSIX 1003.1-2001.
grantpt(3), ptsname(3)
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unlockpt(3) | |