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annotate lib/write-any-file.c @ 13761:a19ace3ba849

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Avoid line length limitation from HP NonStop system header files. * m4/include_next.m4 (gl_INCLUDE_NEXT): Define also PRAGMA_COLUMNS. * lib/arpa_inet.in.h: Use PRAGMA_COLUMNS. * lib/ctype.in.h: Likewise. * lib/dirent.in.h: Likewise. * lib/errno.in.h: Likewise. * lib/fcntl.in.h: Likewise. * lib/float.in.h: Likewise. * lib/getopt.in.h: Likewise. * lib/iconv.in.h: Likewise. * lib/inttypes.in.h: Likewise. * lib/langinfo.in.h: Likewise. * lib/locale.in.h: Likewise. * lib/math.in.h: Likewise. * lib/netdb.in.h: Likewise. * lib/netinet_in.in.h: Likewise. * lib/poll.in.h: Likewise. * lib/pthread.in.h: Likewise. * lib/pty.in.h: Likewise. * lib/sched.in.h: Likewise. * lib/se-selinux.in.h: Likewise. * lib/search.in.h: Likewise. * lib/signal.in.h: Likewise. * lib/spawn.in.h: Likewise. * lib/stdarg.in.h: Likewise. * lib/stddef.in.h: Likewise. * lib/stdint.in.h: Likewise. * lib/stdio.in.h: Likewise. * lib/stdlib.in.h: Likewise. * lib/string.in.h: Likewise. * lib/strings.in.h: Likewise. * lib/sys_file.in.h: Likewise. * lib/sys_ioctl.in.h: Likewise. * lib/sys_select.in.h: Likewise. * lib/sys_socket.in.h: Likewise. * lib/sys_stat.in.h: Likewise. * lib/sys_time.in.h: Likewise. * lib/sys_times.in.h: Likewise. * lib/sys_utsname.in.h: Likewise. * lib/sys_wait.in.h: Likewise. * lib/sysexits.in.h: Likewise. * lib/termios.in.h: Likewise. * lib/time.in.h: Likewise. * lib/unistd.in.h: Likewise. * lib/wchar.in.h: Likewise. * lib/wctype.in.h: Likewise. * modules/arpa_inet (Makefile.am): Substitute PRAGMA_COLUMNS. * modules/ctype (Makefile.am): Likewise. * modules/dirent (Makefile.am): Likewise. * modules/errno (Makefile.am): Likewise. * modules/fcntl-h (Makefile.am): Likewise. * modules/float (Makefile.am): Likewise. * modules/getopt-posix (Makefile.am): Likewise. * modules/iconv-h (Makefile.am): Likewise. * modules/inttypes (Makefile.am): Likewise. * modules/langinfo (Makefile.am): Likewise. * modules/locale (Makefile.am): Likewise. * modules/math (Makefile.am): Likewise. * modules/netdb (Makefile.am): Likewise. * modules/netinet_in (Makefile.am): Likewise. * modules/poll-h (Makefile.am): Likewise. * modules/pthread (Makefile.am): Likewise. * modules/pty (Makefile.am): Likewise. * modules/sched (Makefile.am): Likewise. * modules/search (Makefile.am): Likewise. * modules/selinux-h (Makefile.am): Likewise. * modules/signal (Makefile.am): Likewise. * modules/spawn (Makefile.am): Likewise. * modules/stdarg (Makefile.am): Likewise. * modules/stddef (Makefile.am): Likewise. * modules/stdint (Makefile.am): Likewise. * modules/stdio (Makefile.am): Likewise. * modules/stdlib (Makefile.am): Likewise. * modules/string (Makefile.am): Likewise. * modules/strings (Makefile.am): Likewise. * modules/sys_file (Makefile.am): Likewise. * modules/sys_ioctl (Makefile.am): Likewise. * modules/sys_select (Makefile.am): Likewise. * modules/sys_socket (Makefile.am): Likewise. * modules/sys_stat (Makefile.am): Likewise. * modules/sys_time (Makefile.am): Likewise. * modules/sys_times (Makefile.am): Likewise. * modules/sys_utsname (Makefile.am): Likewise. * modules/sys_wait (Makefile.am): Likewise. * modules/sysexits (Makefile.am): Likewise. * modules/termios (Makefile.am): Likewise. * modules/time (Makefile.am): Likewise. * modules/unistd (Makefile.am): Likewise. * modules/wchar (Makefile.am): Likewise. * modules/wctype (Makefile.am): Likewise.
author Bruno Haible <bruno@clisp.org>
date Mon, 04 Oct 2010 23:35:51 +0200
parents c2cbabec01dd
children 97fc9a21a8fb
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1 /* Determine whether we can write any file.
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3 Copyright (C) 2007, 2009-2010 Free Software Foundation, Inc.
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5 This program is free software: you can redistribute it and/or modify
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6 it under the terms of the GNU General Public License as published by
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7 the Free Software Foundation; either version 3 of the License, or
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8 (at your option) any later version.
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10 This program is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 GNU General Public License for more details.
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15 You should have received a copy of the GNU General Public License
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16 along with this program. If not, see <http://www.gnu.org/licenses/>. */
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18 /* Written by Paul Eggert. */
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20 #include <config.h>
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22 #include "write-any-file.h"
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23 #include "priv-set.h"
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25 #include <unistd.h>
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27 /* Return true if we know that we can write any file, including
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28 writing directories. */
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30 bool
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31 can_write_any_file (void)
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32 {
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33 static bool initialized;
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34 static bool can_write;
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36 if (! initialized)
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37 {
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38 bool can = false;
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39 #if defined PRIV_FILE_DAC_WRITE
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40 can = (priv_set_ismember (PRIV_FILE_DAC_WRITE) == 1);
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41 #else
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42 /* In traditional Unix, only root can unlink directories. */
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43 can = (geteuid () == 0);
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44 #endif
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45 can_write = can;
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46 initialized = true;
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47 }
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49 return can_write;
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50 }