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This incorporates: 2019-09-22 Update some URLs 2019-09-15 fcntl-h: fix compilation error of creat.c on MSVC 2019-09-15 creat: new module 2019-09-15 access: new module 2019-09-09 Add option to assume best, not worst, when cross-compiling. * build-aux/config.guess, build-aux/config.sub, doc/misc/texinfo.tex: * lib/careadlinkat.c, lib/careadlinkat.h, lib/count-leading-zeros.h: * lib/count-trailing-zeros.h, lib/diffseq.h, lib/fcntl.in.h: * lib/ftoastr.c, lib/get-permissions.c: * lib/ieee754.in.h, lib/inttypes.in.h, lib/mktime.c, lib/open.c: * lib/pathmax.h, lib/pipe2.c, lib/stddef.in.h, lib/stdint.in.h: * lib/stdlib.in.h, lib/str-two-way.h, lib/string.in.h, lib/time.in.h: * lib/timegm.c, lib/unistd.in.h, m4/canonicalize.m4: * m4/extern-inline.m4, m4/fcntl_h.m4, m4/fdopendir.m4: * m4/getgroups.m4, m4/getopt.m4, m4/gettimeofday.m4: * m4/gnulib-common.m4, m4/largefile.m4: * m4/lstat.m4, m4/memmem.m4, m4/mktime.m4, m4/nocrash.m4, m4/open.m4: * m4/pselect.m4, m4/putenv.m4, m4/readlink.m4, m4/regex.m4: * m4/symlink.m4, m4/unistd_h.m4, m4/utimens.m4, m4/utimes.m4: Copy from Gnulib. * lib/gnulib.mk.in, m4/gnulib-comp.m4: Regenerate. * m4/open-slash.m4: New file, copied from Gnulib.
83 lines
2.9 KiB
C
83 lines
2.9 KiB
C
/* Define PATH_MAX somehow. Requires sys/types.h.
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Copyright (C) 1992, 1999, 2001, 2003, 2005, 2009-2019 Free Software
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Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, see <https://www.gnu.org/licenses/>. */
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#ifndef _PATHMAX_H
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# define _PATHMAX_H
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/* POSIX:2008 defines PATH_MAX to be the maximum number of bytes in a filename,
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including the terminating NUL byte.
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<https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/limits.h.html>
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PATH_MAX is not defined on systems which have no limit on filename length,
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such as GNU/Hurd.
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This file does *not* define PATH_MAX always. Programs that use this file
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can handle the GNU/Hurd case in several ways:
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- Either with a package-wide handling, or with a per-file handling,
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- Either through a
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#ifdef PATH_MAX
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or through a fallback like
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#ifndef PATH_MAX
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# define PATH_MAX 8192
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#endif
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or through a fallback like
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#ifndef PATH_MAX
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# define PATH_MAX pathconf ("/", _PC_PATH_MAX)
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#endif
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*/
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# include <unistd.h>
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# include <limits.h>
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# ifndef _POSIX_PATH_MAX
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# define _POSIX_PATH_MAX 256
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# endif
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/* Don't include sys/param.h if it already has been. */
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# if defined HAVE_SYS_PARAM_H && !defined PATH_MAX && !defined MAXPATHLEN
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# include <sys/param.h>
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# endif
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# if !defined PATH_MAX && defined MAXPATHLEN
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# define PATH_MAX MAXPATHLEN
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# endif
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# ifdef __hpux
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/* On HP-UX, PATH_MAX designates the maximum number of bytes in a filename,
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*not* including the terminating NUL byte, and is set to 1023.
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Additionally, when _XOPEN_SOURCE is defined to 500 or more, PATH_MAX is
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not defined at all any more. */
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# undef PATH_MAX
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# define PATH_MAX 1024
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# endif
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# if defined _WIN32 && ! defined __CYGWIN__
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/* The page "Naming Files, Paths, and Namespaces" on msdn.microsoft.com,
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section "Maximum Path Length Limitation",
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<https://docs.microsoft.com/en-us/windows/desktop/FileIO/naming-a-file#maximum-path-length-limitation>
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explains that the maximum size of a filename, including the terminating
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NUL byte, is 260 = 3 + 256 + 1.
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This is the same value as
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- FILENAME_MAX in <stdio.h>,
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- _MAX_PATH in <stdlib.h>,
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- MAX_PATH in <windef.h>.
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Undefine the original value, because mingw's <limits.h> gets it wrong. */
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# undef PATH_MAX
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# define PATH_MAX 260
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# endif
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#endif /* _PATHMAX_H */
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