+++ /dev/null
-.\" Copyright (c) 1993 by Thomas Koenig (ig25@rz.uni-karlsruhe.de)
-.\"
-.\" %%%LICENSE_START(VERBATIM)
-.\" Permission is granted to make and distribute verbatim copies of this
-.\" manual provided the copyright notice and this permission notice are
-.\" preserved on all copies.
-.\"
-.\" Permission is granted to copy and distribute modified versions of this
-.\" manual under the conditions for verbatim copying, provided that the
-.\" entire resulting derived work is distributed under the terms of a
-.\" permission notice identical to this one.
-.\"
-.\" Since the Linux kernel and libraries are constantly changing, this
-.\" manual page may be incorrect or out-of-date. The author(s) assume no
-.\" responsibility for errors or omissions, or for damages resulting from
-.\" the use of the information contained herein. The author(s) may not
-.\" have taken the same level of care in the production of this manual,
-.\" which is licensed free of charge, as they might when working
-.\" professionally.
-.\"
-.\" Formatted or processed versions of this manual, if unaccompanied by
-.\" the source, must acknowledge the copyright and authors of this work.
-.\" %%%LICENSE_END
-.\"
-.\" Modified Sat Jul 24 19:53:02 1993 by Rik Faith (faith@cs.unc.edu)
-.\" FIXME Many more values for 'name' are supported, some of which
-.\" are documented under 'info confstr'.
-.\" See <bits/confname.h> for the rest.
-.\" These should all be added to this page.
-.\" See also the POSIX.1-2001 specification of confstr()
-.\"
-.TH CONFSTR 3 2014-03-20 "GNU" "Linux Programmer's Manual"
-.SH NAME
-confstr \- get configuration dependent string variables
-.SH SYNOPSIS
-.nf
-.B #include <unistd.h>
-.sp
-.BI "size_t confstr(int " "name" ", char *" buf ", size_t " len );
-.fi
-.sp
-.in -4n
-Feature Test Macro Requirements for glibc (see
-.BR feature_test_macros (7)):
-.in
-.sp
-.BR confstr ():
-_POSIX_C_SOURCE\ >=\ 2 || _XOPEN_SOURCE
-.SH DESCRIPTION
-.BR confstr ()
-gets the value of configuration-dependent string variables.
-.PP
-The
-.I name
-argument is the system variable to be queried.
-The following variables are supported:
-.TP
-.BR _CS_GNU_LIBC_VERSION " (GNU C library only; since glibc 2.3.2)"
-A string which identifies the GNU C library version on this system
-(e.g, "glibc 2.3.4").
-.TP
-.BR _CS_GNU_LIBPTHREAD_VERSION " (GNU C library only; since glibc 2.3.2)"
-A string which identifies the POSIX implementation supplied by this
-C library (e.g, "NPTL 2.3.4" or "linuxthreads-0.10").
-.TP
-.B _CS_PATH
-A value for the
-.B PATH
-variable which indicates where all the POSIX.2 standard utilities can
-be found.
-.PP
-If
-.I buf
-is not NULL and
-.I len
-is not zero,
-.BR confstr ()
-copies the value of the string to
-.I buf
-truncated to
-.I len \- 1
-bytes if necessary, with a null byte (\(aq\\0\(aq) as terminator.
-This can be detected by comparing the return value of
-.BR confstr ()
-against
-.IR len .
-.PP
-If
-.I len
-is zero and
-.I buf
-is NULL,
-.BR confstr ()
-just returns the value as defined below.
-.SH RETURN VALUE
-If
-.I name
-is a valid configuration variable,
-.BR confstr ()
-returns the number of bytes (including the terminating null byte)
-that would be required to hold the entire value of that variable.
-This value may be greater than
-.IR len ,
-which means that the value in
-.I buf
-is truncated.
-
-If
-.I name
-is a valid configuration variable,
-but that variable does not have a value, then
-.BR confstr ()
-returns 0.
-If
-.I name
-does not correspond to a valid configuration variable,
-.BR confstr ()
-returns 0, and
-.I errno
-is set to
-.BR EINVAL .
-.SH ERRORS
-.TP
-.B EINVAL
-The value of
-.I name
-is invalid.
-.SH CONFORMING TO
-POSIX.1-2001.
-.SH EXAMPLE
-The following code fragment determines the path where to find
-the POSIX.2 system utilities:
-.br
-.nf
-.in +4n
-
-char *pathbuf;
-size_t n;
-
-n = confstr(_CS_PATH, NULL, (size_t) 0);
-pathbuf = malloc(n);
-if (pathbuf == NULL)
- abort();
-confstr(_CS_PATH, pathbuf, n);
-.in
-.fi
-.SH SEE ALSO
-.BR getconf (1),
-.BR sh (1),
-.BR exec (3),
-.BR fpathconf (3)
-.BR sysconf (3)
-.BR pathconf (3)
-.BR system (3)
-.SH COLOPHON
-This page is part of release 3.79 of the Linux
-.I man-pages
-project.
-A description of the project,
-information about reporting bugs,
-and the latest version of this page,
-can be found at
-\%http://www.kernel.org/doc/man\-pages/.
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