octave-shane/gnulib-hg: lib/getdomainname.c annotate

annotate lib/getdomainname.c @ 17480:f40b3156a43e

selinux-at: omit unnecessary include * lib/selinux-at.c: Don't include dosname.h; not needed, since this source file doesn't use its macros, and subsidiary files that use the macros already include it.

author	Paul Eggert <eggert@cs.ucla.edu>
date	Fri, 23 Aug 2013 13:53:46 -0700
parents	e542fd46ad6f
children	344018b6e5d7

rev	line source
4730 64e0a1bfa9bb New module 'getdomainname'. Bruno Haible <bruno@clisp.org> parents: diff changeset	1 /* getdomainname emulation for systems that doesn't have it.
7302 8a1a9361108c * _fpending.c: Include <config.h> unconditionally, since we no Paul Eggert <eggert@cs.ucla.edu> parents: 5848 diff changeset	2
17249 e542fd46ad6f maint: update all copyright year number ranges Eric Blake <eblake@redhat.com> parents: 16935 diff changeset	3 Copyright (C) 2003, 2006, 2008, 2010-2013 Free Software Foundation, Inc.
4730 64e0a1bfa9bb New module 'getdomainname'. Bruno Haible <bruno@clisp.org> parents: diff changeset	4
9309 bbbbbf4cd1c5 Change copyright notice from GPLv2+ to GPLv3+. Bruno Haible <bruno@clisp.org> parents: 7302 diff changeset	5 This program is free software: you can redistribute it and/or modify
4730 64e0a1bfa9bb New module 'getdomainname'. Bruno Haible <bruno@clisp.org> parents: diff changeset	6 it under the terms of the GNU General Public License as published by
9309 bbbbbf4cd1c5 Change copyright notice from GPLv2+ to GPLv3+. Bruno Haible <bruno@clisp.org> parents: 7302 diff changeset	7 the Free Software Foundation; either version 3 of the License, or
bbbbbf4cd1c5 Change copyright notice from GPLv2+ to GPLv3+. Bruno Haible <bruno@clisp.org> parents: 7302 diff changeset	8 (at your option) any later version.
4730 64e0a1bfa9bb New module 'getdomainname'. Bruno Haible <bruno@clisp.org> parents: diff changeset	9
64e0a1bfa9bb New module 'getdomainname'. Bruno Haible <bruno@clisp.org> parents: diff changeset	10 This program is distributed in the hope that it will be useful,
64e0a1bfa9bb New module 'getdomainname'. Bruno Haible <bruno@clisp.org> parents: diff changeset	11 but WITHOUT ANY WARRANTY; without even the implied warranty of
64e0a1bfa9bb New module 'getdomainname'. Bruno Haible <bruno@clisp.org> parents: diff changeset	12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
64e0a1bfa9bb New module 'getdomainname'. Bruno Haible <bruno@clisp.org> parents: diff changeset	13 GNU General Public License for more details.
64e0a1bfa9bb New module 'getdomainname'. Bruno Haible <bruno@clisp.org> parents: diff changeset	14
64e0a1bfa9bb New module 'getdomainname'. Bruno Haible <bruno@clisp.org> parents: diff changeset	15 You should have received a copy of the GNU General Public License
9309 bbbbbf4cd1c5 Change copyright notice from GPLv2+ to GPLv3+. Bruno Haible <bruno@clisp.org> parents: 7302 diff changeset	16 along with this program. If not, see <http://www.gnu.org/licenses/>. */
4730 64e0a1bfa9bb New module 'getdomainname'. Bruno Haible <bruno@clisp.org> parents: diff changeset	17
64e0a1bfa9bb New module 'getdomainname'. Bruno Haible <bruno@clisp.org> parents: diff changeset	18 /* Written by Simon Josefsson. */
64e0a1bfa9bb New module 'getdomainname'. Bruno Haible <bruno@clisp.org> parents: diff changeset	19
7302 8a1a9361108c * _fpending.c: Include <config.h> unconditionally, since we no Paul Eggert <eggert@cs.ucla.edu> parents: 5848 diff changeset	20 #include <config.h>
4730 64e0a1bfa9bb New module 'getdomainname'. Bruno Haible <bruno@clisp.org> parents: diff changeset	21
64e0a1bfa9bb New module 'getdomainname'. Bruno Haible <bruno@clisp.org> parents: diff changeset	22 /* Specification. */
10661 65c9436dc0d3 Move the getdomainname() declaration to <unistd.h>. Bruno Haible <bruno@clisp.org> parents: 9309 diff changeset	23 #include <unistd.h>
4730 64e0a1bfa9bb New module 'getdomainname'. Bruno Haible <bruno@clisp.org> parents: diff changeset	24
13911 e6744cae0421 getdomainname: Use the system function when possible. Bruno Haible <bruno@clisp.org> parents: 12559 diff changeset	25 #include <limits.h>
4730 64e0a1bfa9bb New module 'getdomainname'. Bruno Haible <bruno@clisp.org> parents: diff changeset	26 #include <string.h>
4732 3f6a23a84d27 Return -1/EINVAL when the buffer is too small. Bruno Haible <bruno@clisp.org> parents: 4730 diff changeset	27 #include <errno.h>
4730 64e0a1bfa9bb New module 'getdomainname'. Bruno Haible <bruno@clisp.org> parents: diff changeset	28
13911 e6744cae0421 getdomainname: Use the system function when possible. Bruno Haible <bruno@clisp.org> parents: 12559 diff changeset	29 #if HAVE_SYSINFO && HAVE_SYS_SYSTEMINFO_H /* IRIX, OSF/1, Solaris */
e6744cae0421 getdomainname: Use the system function when possible. Bruno Haible <bruno@clisp.org> parents: 12559 diff changeset	30 # include <sys/systeminfo.h>
e6744cae0421 getdomainname: Use the system function when possible. Bruno Haible <bruno@clisp.org> parents: 12559 diff changeset	31 #endif
e6744cae0421 getdomainname: Use the system function when possible. Bruno Haible <bruno@clisp.org> parents: 12559 diff changeset	32
4730 64e0a1bfa9bb New module 'getdomainname'. Bruno Haible <bruno@clisp.org> parents: diff changeset	33 /* Return the NIS domain name of the machine.
64e0a1bfa9bb New module 'getdomainname'. Bruno Haible <bruno@clisp.org> parents: diff changeset	34 WARNING! The NIS domain name is unrelated to the fully qualified host name
64e0a1bfa9bb New module 'getdomainname'. Bruno Haible <bruno@clisp.org> parents: diff changeset	35 of the machine. It is also unrelated to email addresses.
4734 e73a97963451 Fix comment. Bruno Haible <bruno@clisp.org> parents: 4732 diff changeset	36 WARNING! The NIS domain name is usually the empty string or "(none)" when
e73a97963451 Fix comment. Bruno Haible <bruno@clisp.org> parents: 4732 diff changeset	37 not using NIS.
4730 64e0a1bfa9bb New module 'getdomainname'. Bruno Haible <bruno@clisp.org> parents: diff changeset	38
64e0a1bfa9bb New module 'getdomainname'. Bruno Haible <bruno@clisp.org> parents: diff changeset	39 Put up to LEN bytes of the NIS domain name into NAME.
64e0a1bfa9bb New module 'getdomainname'. Bruno Haible <bruno@clisp.org> parents: diff changeset	40 Null terminate it if the name is shorter than LEN.
4732 3f6a23a84d27 Return -1/EINVAL when the buffer is too small. Bruno Haible <bruno@clisp.org> parents: 4730 diff changeset	41 If the NIS domain name is longer than LEN, set errno = EINVAL and return -1.
4730 64e0a1bfa9bb New module 'getdomainname'. Bruno Haible <bruno@clisp.org> parents: diff changeset	42 Return 0 if successful, otherwise set errno and return -1. */
64e0a1bfa9bb New module 'getdomainname'. Bruno Haible <bruno@clisp.org> parents: diff changeset	43 int
64e0a1bfa9bb New module 'getdomainname'. Bruno Haible <bruno@clisp.org> parents: diff changeset	44 getdomainname (char *name, size_t len)
13911 e6744cae0421 getdomainname: Use the system function when possible. Bruno Haible <bruno@clisp.org> parents: 12559 diff changeset	45 #undef getdomainname
4730 64e0a1bfa9bb New module 'getdomainname'. Bruno Haible <bruno@clisp.org> parents: diff changeset	46 {
16935 498a2211d839 Write "Mac OS X" instead of "MacOS X". Bruno Haible <bruno@clisp.org> parents: 16201 diff changeset	47 #if HAVE_GETDOMAINNAME /* Mac OS X, FreeBSD, AIX, IRIX, OSF/1 */
13911 e6744cae0421 getdomainname: Use the system function when possible. Bruno Haible <bruno@clisp.org> parents: 12559 diff changeset	48 extern int getdomainname (char *, int);
e6744cae0421 getdomainname: Use the system function when possible. Bruno Haible <bruno@clisp.org> parents: 12559 diff changeset	49
e6744cae0421 getdomainname: Use the system function when possible. Bruno Haible <bruno@clisp.org> parents: 12559 diff changeset	50 if (len > INT_MAX)
e6744cae0421 getdomainname: Use the system function when possible. Bruno Haible <bruno@clisp.org> parents: 12559 diff changeset	51 len = INT_MAX;
e6744cae0421 getdomainname: Use the system function when possible. Bruno Haible <bruno@clisp.org> parents: 12559 diff changeset	52 return getdomainname (name, (int) len);
e6744cae0421 getdomainname: Use the system function when possible. Bruno Haible <bruno@clisp.org> parents: 12559 diff changeset	53 #elif HAVE_SYSINFO && HAVE_SYS_SYSTEMINFO_H && defined SI_SRPC_DOMAIN
e6744cae0421 getdomainname: Use the system function when possible. Bruno Haible <bruno@clisp.org> parents: 12559 diff changeset	54 /* Solaris */
e6744cae0421 getdomainname: Use the system function when possible. Bruno Haible <bruno@clisp.org> parents: 12559 diff changeset	55 int ret;
e6744cae0421 getdomainname: Use the system function when possible. Bruno Haible <bruno@clisp.org> parents: 12559 diff changeset	56
e6744cae0421 getdomainname: Use the system function when possible. Bruno Haible <bruno@clisp.org> parents: 12559 diff changeset	57 /* The third argument is a 'long', but the return value must fit in an
e6744cae0421 getdomainname: Use the system function when possible. Bruno Haible <bruno@clisp.org> parents: 12559 diff changeset	58 'int', therefore it's better to avoid arguments > INT_MAX. */
e6744cae0421 getdomainname: Use the system function when possible. Bruno Haible <bruno@clisp.org> parents: 12559 diff changeset	59 ret = sysinfo (SI_SRPC_DOMAIN, name, len > INT_MAX ? INT_MAX : len);
e6744cae0421 getdomainname: Use the system function when possible. Bruno Haible <bruno@clisp.org> parents: 12559 diff changeset	60 if (ret < 0)
e6744cae0421 getdomainname: Use the system function when possible. Bruno Haible <bruno@clisp.org> parents: 12559 diff changeset	61 /* errno is set here. */
e6744cae0421 getdomainname: Use the system function when possible. Bruno Haible <bruno@clisp.org> parents: 12559 diff changeset	62 return -1;
e6744cae0421 getdomainname: Use the system function when possible. Bruno Haible <bruno@clisp.org> parents: 12559 diff changeset	63 if (ret > len)
e6744cae0421 getdomainname: Use the system function when possible. Bruno Haible <bruno@clisp.org> parents: 12559 diff changeset	64 {
e6744cae0421 getdomainname: Use the system function when possible. Bruno Haible <bruno@clisp.org> parents: 12559 diff changeset	65 errno = EINVAL;
e6744cae0421 getdomainname: Use the system function when possible. Bruno Haible <bruno@clisp.org> parents: 12559 diff changeset	66 return -1;
e6744cae0421 getdomainname: Use the system function when possible. Bruno Haible <bruno@clisp.org> parents: 12559 diff changeset	67 }
e6744cae0421 getdomainname: Use the system function when possible. Bruno Haible <bruno@clisp.org> parents: 12559 diff changeset	68 return 0;
e6744cae0421 getdomainname: Use the system function when possible. Bruno Haible <bruno@clisp.org> parents: 12559 diff changeset	69 #else /* HP-UX, Cygwin, mingw */
12421 e8d2c6fc33ad Use spaces for indentation, not tabs. Bruno Haible <bruno@clisp.org> parents: 10661 diff changeset	70 const char result = ""; / Hardcode your domain name if you want. */
4732 3f6a23a84d27 Return -1/EINVAL when the buffer is too small. Bruno Haible <bruno@clisp.org> parents: 4730 diff changeset	71 size_t result_len = strlen (result);
3f6a23a84d27 Return -1/EINVAL when the buffer is too small. Bruno Haible <bruno@clisp.org> parents: 4730 diff changeset	72
3f6a23a84d27 Return -1/EINVAL when the buffer is too small. Bruno Haible <bruno@clisp.org> parents: 4730 diff changeset	73 if (result_len > len)
3f6a23a84d27 Return -1/EINVAL when the buffer is too small. Bruno Haible <bruno@clisp.org> parents: 4730 diff changeset	74 {
3f6a23a84d27 Return -1/EINVAL when the buffer is too small. Bruno Haible <bruno@clisp.org> parents: 4730 diff changeset	75 errno = EINVAL;
3f6a23a84d27 Return -1/EINVAL when the buffer is too small. Bruno Haible <bruno@clisp.org> parents: 4730 diff changeset	76 return -1;
3f6a23a84d27 Return -1/EINVAL when the buffer is too small. Bruno Haible <bruno@clisp.org> parents: 4730 diff changeset	77 }
3f6a23a84d27 Return -1/EINVAL when the buffer is too small. Bruno Haible <bruno@clisp.org> parents: 4730 diff changeset	78 memcpy (name, result, result_len);
3f6a23a84d27 Return -1/EINVAL when the buffer is too small. Bruno Haible <bruno@clisp.org> parents: 4730 diff changeset	79 if (result_len < len)
3f6a23a84d27 Return -1/EINVAL when the buffer is too small. Bruno Haible <bruno@clisp.org> parents: 4730 diff changeset	80 name[result_len] = '\0';
4730 64e0a1bfa9bb New module 'getdomainname'. Bruno Haible <bruno@clisp.org> parents: diff changeset	81 return 0;
13911 e6744cae0421 getdomainname: Use the system function when possible. Bruno Haible <bruno@clisp.org> parents: 12559 diff changeset	82 #endif
4730 64e0a1bfa9bb New module 'getdomainname'. Bruno Haible <bruno@clisp.org> parents: diff changeset	83 }

Mercurial > hg > octave-shane > gnulib-hg

annotate lib/getdomainname.c @ 17480:f40b3156a43e