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* Makerules (sysd-rules): Define PTW for ptw-* files.
* Versions: Define GLIBC_2.7 for libc. * include/stdio.h: Declare __fortify_fail. * debug/fortify_fail.c: New file. * debug/Makefile (routines): Add fortify_fail. * debug/chk_fail.c: Use __fortify_fail. * debug/stack_chk_fail.c: Likewise. * io/Versions: Export __open_2, __open64_2, __openat_2, and __openat64_2 for GLIBC_2.7. * io/fcntl.h: When compiling with fortification, include bits/fcntl2.h. * io/open.c: Define *_2 variant of function which checks for O_CREAT and fails if necessary. * io/open64.c: Likewise. * io/openat.c: Likewise. * io/openat64.c: Likewise. * sysdeps/unix/sysv/linux/open64.c: Likewise. * sysdeps/unix/sysv/linux/openat.c: Likewise. * sysdeps/unix/sysv/linux/openat64.c: Likewise. * io/bits/fcntl2.h: New file. * include/fcntl.h: Declare __open_2, __open64_2, __openat_2, and __openat64_2. * include/bits/fcntl2.h: New file. * sysdeps/unix/sysv/linux/Makefile [subdir=io] (sysdep_routines): Add open_2. * sysdeps/unix/sysv/linux/open_2.c: New file.
This commit is contained in:
Ulrich Drepper
155
io/bits/fcntl2.h
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155
io/bits/fcntl2.h
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/* Checking macros for fcntl functions.
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Copyright (C) 2007 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#ifndef _FCNTL_H
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# error "Never include <bits/fcntl2.h> directly; use <fcntl.h> instead."
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#endif
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/* Check that calls to open and openat with O_CREAT set have an
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appropriate third/fourth parameter. */
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#ifndef __USE_FILE_OFFSET64
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extern int __open_2 (__const char *__path, int __oflag);
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#else
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extern int __REDIRECT (__open_2, (__const char *__file, int __oflag),
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__open64_2) __nonnull ((1));
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#endif
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#define open(fname, flags, ...) \
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({ int ___r; \
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/* If the compiler complains about an invalid type, excess elements, etc \
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in the initialization this means a paraleter of the wrong type has \
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been passed to open. */ \
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int ___arr[] = { __VA_ARGS__ }; \
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if (__builtin_constant_p (flags) && (flags & O_CREAT) != 0) \
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{ \
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/* If the compile complains about the size of this array type the \
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the mode parameter is missing since O_CREAT has been used. */ \
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typedef int __open_missing_mode[(flags & O_CREAT) != 0 \
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? ((long int) sizeof (___arr) \
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- (long int) sizeof (int)) : 1]; \
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} \
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if (sizeof (___arr) == 0) \
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___r = __open_2 (fname, flags); \
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else \
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{ \
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/* If the compile complains about the size of this array type too \
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many parameters have been passed to open. */ \
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typedef int __open_too_many_args[-(sizeof (___arr) > sizeof (int))]; \
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___r = open (fname, flags, ___arr[0]); \
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} \
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___r; \
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})
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#ifdef __USE_LARGEFILE64
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extern int __open64_2 (__const char *__path, int __oflag);
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# define open64(fname, flags, ...) \
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({ int ___r; \
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/* If the compiler complains about an invalid type, excess elements, etc \
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in the initialization this means a paraleter of the wrong type has \
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been passed to open64. */ \
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int ___arr[] = { __VA_ARGS__ }; \
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if (__builtin_constant_p (flags) && (flags & O_CREAT) != 0) \
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{ \
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/* If the compile complains about the size of this array type the \
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the mode parameter is missing since O_CREAT has been used. */ \
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typedef int __open_missing_mode[(flags & O_CREAT) != 0 \
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? ((long int) sizeof (___arr) \
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- (long int) sizeof (int)) : 1]; \
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} \
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if (sizeof (___arr) == 0) \
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___r = __open64_2 (fname, flags); \
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else \
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{ \
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/* If the compile complains about the size of this array type too \
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many parameters have been passed to open64. */ \
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typedef int __open_too_many_args[-(sizeof (___arr) > sizeof (int))]; \
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___r = open64 (fname, flags, ___arr[0]); \
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} \
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___r; \
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})
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#endif
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#ifdef __USE_ATFILE
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# ifndef __USE_FILE_OFFSET64
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extern int __openat_2 (int __fd, __const char *__path, int __oflag);
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# else
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extern int __REDIRECT (__openat_2, (int __fd, __const char *__file,
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int __oflag), __openat64_2)
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__nonnull ((1));
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# endif
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# define openat(fd, fname, flags, ...) \
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({ int ___r; \
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/* If the compiler complains about an invalid type, excess elements, etc \
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in the initialization this means a paraleter of the wrong type has \
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been passed to openat. */ \
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int ___arr[] = { __VA_ARGS__ }; \
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if (__builtin_constant_p (flags) && (flags & O_CREAT) != 0) \
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{ \
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/* If the compile complains about the size of this array type the \
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the mode parameter is missing since O_CREAT has been used. */ \
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typedef int __open_missing_mode[(flags & O_CREAT) != 0 \
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? ((long int) sizeof (___arr) \
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- (long int) sizeof (int)) : 1]; \
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} \
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if (sizeof (___arr) == 0) \
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___r = __openat_2 (fd, fname, flags); \
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else \
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{ \
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/* If the compile complains about the size of this array type too \
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many parameters have been passed to openat. */ \
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typedef int __open_too_many_args[-(sizeof (___arr) > sizeof (int))]; \
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___r = openat (fd, fname, flags, ___arr[0]); \
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} \
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___r; \
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})
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# ifdef __USE_LARGEFILE64
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extern int __openat64_2 (int __fd, __const char *__path, int __oflag);
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# define openat64(fd, fname, flags, ...) \
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({ int ___r; \
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/* If the compiler complains about an invalid type, excess elements, etc \
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in the initialization this means a paraleter of the wrong type has \
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been passed to openat64. */ \
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int ___arr[] = { __VA_ARGS__ }; \
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if (__builtin_constant_p (flags) && (flags & O_CREAT) != 0) \
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{ \
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/* If the compile complains about the size of this array type the \
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the mode parameter is missing since O_CREAT has been used. */ \
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typedef int __open_missing_mode[(flags & O_CREAT) != 0 \
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? ((long int) sizeof (___arr) \
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- (long int) sizeof (int)) : 1]; \
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} \
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if (sizeof (___arr) == 0) \
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___r = __openat64_2 (fd, fname, flags); \
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else \
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{ \
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/* If the compile complains about the size of this array type too \
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many parameters have been passed to openat. */ \
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typedef int __open_too_many_args[-(sizeof (___arr) > sizeof (int))]; \
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___r = openat64 (fd, fname, flags, ___arr[0]); \
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} \
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___r; \
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})
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# endif
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#endif
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