From 399644e47874bff147afb19c89228901ac39340e Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 15 Apr 2024 21:40:15 +0200 Subject: Adding upstream version 6.05.01. Signed-off-by: Daniel Baumann --- man3/grantpt.3 | 108 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 108 insertions(+) create mode 100644 man3/grantpt.3 (limited to 'man3/grantpt.3') diff --git a/man3/grantpt.3 b/man3/grantpt.3 new file mode 100644 index 0000000..174c5c9 --- /dev/null +++ b/man3/grantpt.3 @@ -0,0 +1,108 @@ +'\" t +.\" %%%LICENSE_START(PUBLIC_DOMAIN) +.\" This page is in the public domain. - aeb +.\" %%%LICENSE_END +.\" +.TH grantpt 3 2023-07-20 "Linux man-pages 6.05.01" +.SH NAME +grantpt \- grant access to the slave pseudoterminal +.SH LIBRARY +Standard C library +.RI ( libc ", " \-lc ) +.SH SYNOPSIS +.nf +.B #include +.PP +.BI "int grantpt(int " fd ");" +.fi +.PP +.RS -4 +Feature Test Macro Requirements for glibc (see +.BR feature_test_macros (7)): +.RE +.PP +.BR grantpt (): +.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 grantpt () +function changes the mode and owner of the slave pseudoterminal device +corresponding to the master pseudoterminal referred to by the file descriptor +.IR fd . +The user ID of the slave is set to the real UID of the calling process. +The group ID is set to an unspecified value (e.g., +.IR tty ). +The mode of the slave is set to 0620 (crw\-\-w\-\-\-\-). +.PP +The behavior of +.BR grantpt () +is unspecified if a signal handler is installed to catch +.B SIGCHLD +signals. +.SH RETURN VALUE +When successful, +.BR grantpt () +returns 0. +Otherwise, it returns \-1 and sets +.I errno +to indicate the error. +.SH ERRORS +.TP +.B EACCES +The corresponding slave pseudoterminal could not be accessed. +.TP +.B EBADF +The +.I fd +argument is not a valid open file descriptor. +.TP +.B EINVAL +The +.I fd +argument is valid but 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 grantpt () +T} Thread safety MT-Safe locale +.TE +.sp 1 +.SH STANDARDS +POSIX.1-2008. +.SH HISTORY +glibc 2.1. +POSIX.1-2001. +.PP +This is part of the UNIX 98 pseudoterminal support, see +.BR pts (4). +.PP +Historical systems implemented this function via a set-user-ID helper binary +called "pt_chown". +glibc on Linux before glibc 2.33 could do so as well, +in order to support configurations with only BSD pseudoterminals; +this support has been removed. +On modern systems this is either a no-op +\[em]with permissions configured on pty allocation, as is the case on Linux\[em] +or an +.BR ioctl (2). +.SH SEE ALSO +.BR open (2), +.BR posix_openpt (3), +.BR ptsname (3), +.BR unlockpt (3), +.BR pts (4), +.BR pty (7) -- cgit v1.2.3