annotate lib/strerror.c @ 7581:45c727466eb8

Move stat.h-substitute stuff from lib/stat-macros.h to lib/stat_.h. stat-macros.h is now for our own macros, whereas stat_h is for macros in the <sys/stat.h> name space. * lib/stat-macros.h: Remove copyright notice, as this file is now tiny. (STAT_MACROS_H): Remove. (S_IFMT, S_ISBLK, S_ISCHR, S_ISDIR, S_ISFIFO, S_ISLNK, S_ISNAM): (S_ISMPB, S_ISMPC, S_ISNWK, S_ISREG, S_ISSOCK, S_ISDOOR, S_ISPORT): (S_TYPEISMQ, S_TYPEISTMO, S_TYPEISSEM, S_TYPEISSHM, S_ISCTG, S_ISOFD): (S_ISOFL, S_ISWHT, S_ISUID, S_ISGID, S_ISVTX, S_IRUSR, S_IRGRP): (S_IROTH, S_IWUSR, S_IWGRP, S_IWOTH, S_IXUSR, S_IXGRP, S_IXOTH): (S_IRWXU, S_IRWXG, S_IRWXO, S_IXUGO, S_IRWXUGO): Move these macros to ... * lib/stat_.h: here. Don't include stat-macros.h. * lib/canonicalize.c: Don't include stat-macros.h. * lib/chown.c: Likewise. * lib/euidaccess.c: Likewise. * lib/file-type.c: Likewise. * lib/filemode.c: Likewise. * lib/glob.c: Likewise. * lib/isapipe.c: Likewise. * lib/lchown.c: Likewise. * lib/lstat.c: Likewise. * lib/mkdir-p.c: Likewise. * lib/rmdir.c: Likewise. * m4/lchown.m4 (gl_FUNC_LCHOWN): Don't require gl_STAT_MACROS. * m4/sys_stat_h.m4 (gl_HEADER_SYS_STAT_H): Don't check for io.h unless mkdir isn't declared, to speed up 'configure'. Always create sys/stat.h, since it's unlikely any real sys/stat.h would define all the S_* symbols. * modules/canonicalize (Depends-on): Depend on sys_stat, not stat-macros. * modules/chown: Likewise. * modules/euidaccess: Likewise. * modules/filemode: Likewise. * modules/file-type: Likewise. * modules/glob: Likewise. * modules/isapipe: Likewise. * modules/lchown: Likewise. * modules/lstat: Likewise. * modules/mkancesdirs: Likewise. * modules/rmdir: Likewise. * modules/mkdir-p (Depends-on): Also depend on sys_stat. * modules/modechange: Likewise. * modules/stat-macros (Files): Remove m4/stat-macros.m4. (configure.ac): Remove gl_STAT_MACROS. * modules/sys_stat (Depends-on): Remove stat-macros.
author Paul Eggert <eggert@cs.ucla.edu>
date Fri, 27 Oct 2006 20:46:43 +0000
parents 8a1a9361108c
children e5ee9891c553
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1 /* strerror.c --- ANSI C compatible system error routine
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2
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3 Copyright (C) 1986, 1988, 1989, 1991, 2002, 2003, 2006 Free
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4 Software Foundation, Inc.
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5
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6 This program is free software; you can redistribute it and/or modify
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7 it under the terms of the GNU General Public License as published by
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8 the Free Software Foundation; either version 2, or (at your option)
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9 any later version.
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10
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11 This program is distributed in the hope that it will be useful,
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 GNU General Public License for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with this program; if not, write to the Free Software Foundation,
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a48fb0e98c8c *** empty log message ***
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18 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
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20 #include <config.h>
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22 #include <limits.h>
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23
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24 /* Don't include <stdio.h>, since it may or may not declare
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25 sys_errlist and its declarations may collide with ours. Just
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26 declare the stuff that we need directly. Standard hosted C89
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27 implementations define strerror and they don't need this strerror
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28 function, so take some liberties with the standard to cater to
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29 ancient or limited freestanding implementations. */
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30 int sprintf (char *, char const *, ...);
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31 extern int sys_nerr;
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32 extern char *sys_errlist[];
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33
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34 char *
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35 strerror (int n)
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36 {
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37 static char const fmt[] = "Unknown error (%d)";
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38 static char mesg[sizeof fmt + sizeof n * CHAR_BIT / 3];
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39
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40 if (n < 0 || n >= sys_nerr)
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41 {
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42 sprintf (mesg, fmt, n);
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43 return mesg;
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44 }
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45 else
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46 return sys_errlist[n];
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47 }