Mercurial > hg > octave-lojdl > gnulib-hg
view lib/fcntl.in.h @ 12246:b156d2d1b827
freopen-safer: new module
* modules/freopen-safer: New module.
* m4/stdio-safer.m4 (gl_FREOPEN_SAFER): New macro.
* lib/freopen-safer.c (freopen_safer): New file.
* lib/stdio-safer.h (freopen_safer): New declaration.
* lib/stdio--.h (freopen): New override.
* MODULES.html.sh (File stream based Input/Output): Mention it.
* doc/posix-functions/freopen.texi (freopen): Mention pitfalls and
freopen-safer module.
* doc/posix-functions/stderr.texi (stderr): Likewise.
* doc/posix-functions/stdin.texi (stdin): Likewise.
* doc/posix-functions/stdout.texi (stdout): Likewise.
* modules/freopen-safer-tests: New test.
* tests/test-reopen-safer.c: New file.
Signed-off-by: Eric Blake <ebb9@byu.net>
author | Eric Blake <ebb9@byu.net> |
---|---|
date | Thu, 05 Nov 2009 15:13:00 -0700 |
parents | 21ec8b9a3f27 |
children | f7842310a565 |
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/* Like <fcntl.h>, but with non-working flags defined to 0. Copyright (C) 2006-2009 Free Software Foundation, Inc. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ /* written by Paul Eggert */ #if __GNUC__ >= 3 @PRAGMA_SYSTEM_HEADER@ #endif #if defined __need_system_fcntl_h /* Special invocation convention. */ #include <sys/types.h> #include <sys/stat.h> #include <unistd.h> #@INCLUDE_NEXT@ @NEXT_FCNTL_H@ #else /* Normal invocation convention. */ #ifndef _GL_FCNTL_H #include <sys/types.h> #include <sys/stat.h> #include <unistd.h> /* The include_next requires a split double-inclusion guard. */ #@INCLUDE_NEXT@ @NEXT_FCNTL_H@ #ifndef _GL_FCNTL_H #define _GL_FCNTL_H /* The definition of GL_LINK_WARNING is copied here. */ /* Declare overridden functions. */ #ifdef __cplusplus extern "C" { #endif #if @GNULIB_OPEN@ # if @REPLACE_OPEN@ # undef open # define open rpl_open extern int open (const char *filename, int flags, ...); # endif #endif #if @GNULIB_OPENAT@ # if @REPLACE_OPENAT@ # undef openat # define openat rpl_openat # endif # if !@HAVE_OPENAT@ || @REPLACE_OPENAT@ int openat (int fd, char const *file, int flags, /* mode_t mode */ ...); # endif #elif defined GNULIB_POSIXCHECK # undef openat # define openat(f,u,g) \ (GL_LINK_WARNING ("openat is not portable - " \ "use gnulib module openat for portability"), \ openat) #endif #ifdef __cplusplus } #endif /* Fix up the FD_* macros. */ #ifndef FD_CLOEXEC # define FD_CLOEXEC 1 #endif /* Fix up the O_* macros. */ #if !defined O_DIRECT && defined O_DIRECTIO /* Tru64 spells it `O_DIRECTIO'. */ # define O_DIRECT O_DIRECTIO #endif #if !defined O_CLOEXEC && defined O_NOINHERIT /* Mingw spells it `O_NOINHERIT'. Intentionally leave it undefined if not available. */ # define O_CLOEXEC O_NOINHERIT #endif #ifndef O_DIRECT # define O_DIRECT 0 #endif #ifndef O_DIRECTORY # define O_DIRECTORY 0 #endif #ifndef O_DSYNC # define O_DSYNC 0 #endif #ifndef O_NDELAY # define O_NDELAY 0 #endif #ifndef O_NOATIME # define O_NOATIME 0 #endif #ifndef O_NONBLOCK # define O_NONBLOCK O_NDELAY #endif #ifndef O_NOCTTY # define O_NOCTTY 0 #endif #ifndef O_NOFOLLOW # define O_NOFOLLOW 0 #endif #ifndef O_NOLINKS # define O_NOLINKS 0 #endif #ifndef O_RSYNC # define O_RSYNC 0 #endif #ifndef O_SYNC # define O_SYNC 0 #endif #ifndef O_TTY_INIT # define O_TTY_INIT 0 #endif /* For systems that distinguish between text and binary I/O. O_BINARY is usually declared in fcntl.h */ #if !defined O_BINARY && defined _O_BINARY /* For MSC-compatible compilers. */ # define O_BINARY _O_BINARY # define O_TEXT _O_TEXT #endif #if defined __BEOS__ || defined __HAIKU__ /* BeOS 5 and Haiku have O_BINARY and O_TEXT, but they have no effect. */ # undef O_BINARY # undef O_TEXT #endif #ifndef O_BINARY # define O_BINARY 0 # define O_TEXT 0 #endif /* Fix up the AT_* macros. */ /* Work around a bug in Solaris 9 and 10: AT_FDCWD is positive. Its value exceeds INT_MAX, so its use as an int doesn't conform to the C standard, and GCC and Sun C complain in some cases. If the bug is present, undef AT_FDCWD here, so it can be redefined below. */ #if 0 < AT_FDCWD && AT_FDCWD == 0xffd19553 # undef AT_FDCWD #endif /* Use the same bit pattern as Solaris 9, but with the proper signedness. The bit pattern is important, in case this actually is Solaris with the above workaround. */ #ifndef AT_FDCWD # define AT_FDCWD (-3041965) #endif /* Use the same values as Solaris 9. This shouldn't matter, but there's no real reason to differ. */ #ifndef AT_SYMLINK_NOFOLLOW # define AT_SYMLINK_NOFOLLOW 4096 #endif #ifndef AT_REMOVEDIR # define AT_REMOVEDIR 1 #endif /* Solaris 9 lacks these two, so just pick unique values. */ #ifndef AT_SYMLINK_FOLLOW # define AT_SYMLINK_FOLLOW 2 #endif #ifndef AT_EACCESS # define AT_EACCESS 4 #endif #endif /* _GL_FCNTL_H */ #endif /* _GL_FCNTL_H */ #endif