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diff --git a/man3/unlockpt.3 b/man3/unlockpt.3 new file mode 100644 index 0000000..1ed2ad9 --- /dev/null +++ b/man3/unlockpt.3 @@ -0,0 +1,85 @@ +'\" t +.\" %%%LICENSE_START(PUBLIC_DOMAIN) +.\" This page is in the public domain. - aeb +.\" %%%LICENSE_END +.\" +.TH unlockpt 3 2023-07-20 "Linux man-pages 6.05.01" +.SH NAME +unlockpt \- unlock a pseudoterminal master/slave pair +.SH LIBRARY +Standard C library +.RI ( libc ", " \-lc ) +.SH SYNOPSIS +.nf +.B #define _XOPEN_SOURCE +.B #include <stdlib.h> +.PP +.BI "int unlockpt(int " fd ); +.fi +.PP +.RS -4 +Feature Test Macro Requirements for glibc (see +.BR feature_test_macros (7)): +.RE +.PP +.BR unlockpt (): +.nf + Since glibc 2.24: + _XOPEN_SOURCE >= 500 +.\" || (_XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED) + glibc 2.23 and earlier: + _XOPEN_SOURCE +.fi +.SH DESCRIPTION +The +.BR unlockpt () +function unlocks the slave pseudoterminal device +corresponding to the master pseudoterminal referred to by the file descriptor +.IR fd . +.PP +.BR unlockpt () +should be called before opening the slave side of a pseudoterminal. +.SH RETURN VALUE +When successful, +.BR unlockpt () +returns 0. +Otherwise, it returns \-1 and sets +.I errno +to indicate the error. +.SH ERRORS +.TP +.B EBADF +The +.I fd +argument is not a file descriptor open for writing. +.TP +.B EINVAL +The +.I fd +argument is not associated with a master pseudoterminal. +.SH ATTRIBUTES +For an explanation of the terms used in this section, see +.BR attributes (7). +.TS +allbox; +lbx lb lb +l l l. +Interface Attribute Value +T{ +.na +.nh +.BR unlockpt () +T} Thread safety MT-Safe +.TE +.sp 1 +.SH STANDARDS +POSIX.1-2008. +.SH HISTORY +glibc 2.1. +POSIX.1-2001. +.SH SEE ALSO +.BR grantpt (3), +.BR posix_openpt (3), +.BR ptsname (3), +.BR pts (4), +.BR pty (7) |