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NetBSD 6.1.5 - man page for unlockpt (netbsd section 3)

UNLOCKPT(3)			   BSD Library Functions Manual 		      UNLOCKPT(3)

NAME
     unlockpt -- unlock the slave pseudo-terminal device

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <stdlib.h>

     int
     unlockpt(int fildes);

DESCRIPTION
     The unlockpt() unlocks access to the pseudo-terminal device corresponding to the master
     pseudo-terminal device associated with fildes.  Conforming applications must call this func-
     tion before opening the slave pseudo-terminal device.

RETURN VALUES
     If successful, unlockpt() returns 0; otherwise a value of -1 is returned and errno is set to
     indicate the error.

ERRORS
     The unlockpt() function will fail if:

     [EACCESS]		the corresponding pseudo-terminal device could not be accessed.

     [EBADF]		fildes is not a valid descriptor.

     [EINVAL]		fildes is not associated with a master pseudo-terminal device.

NOTES
     In NetBSD unlockpt() does nothing.

SEE ALSO
     ioctl(2), grantpt(3), posix_openpt(3), ptsname(3)

STANDARDS
     The unlockpt() function conforms to IEEE Std 1003.1-2001 (``POSIX.1'').  Its first release
     was in X/Open Portability Guide Issue 4, Version 2 (``XPG4.2'').

BSD					   May 25, 2004 				      BSD


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