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unlockpt — unlock a pseudoterminal master/slave pair
#define _XOPEN_SOURCE /* See feature_test_macros(7) */ #include <stdlib.h>
int
unlockpt( |
int fd); |
The unlockpt() function
unlocks the slave pseudoterminal device corresponding to the
master pseudoterminal referred to by fd.
unlockpt() should be called
before opening the slave side of a pseudoterminal.
When successful, unlockpt()
returns 0. Otherwise, it returns −1 and sets
errno appropriately.