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authorUlrich Drepper <drepper@redhat.com>2007-05-24 23:55:28 +0000
committerUlrich Drepper <drepper@redhat.com>2007-05-24 23:55:28 +0000
commitddfd0535776c47ec01231ac91fabe8b2e128cfa3 (patch)
tree1052c9c568ae6f734290034e8ea566d396b71a13 /io/bits
parent5a8075b116280d0c1ece277e4be75250efca45b2 (diff)
downloadglibc-ddfd0535776c47ec01231ac91fabe8b2e128cfa3.tar.gz
* 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.
Diffstat (limited to 'io/bits')
-rw-r--r--io/bits/fcntl2.h155
1 files changed, 155 insertions, 0 deletions
diff --git a/io/bits/fcntl2.h b/io/bits/fcntl2.h
new file mode 100644
index 0000000000..5f400aed72
--- /dev/null
+++ b/io/bits/fcntl2.h
@@ -0,0 +1,155 @@
+/* Checking macros for fcntl functions.
+ Copyright (C) 2007 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#ifndef _FCNTL_H
+# error "Never include <bits/fcntl2.h> directly; use <fcntl.h> instead."
+#endif
+
+/* Check that calls to open and openat with O_CREAT set have an
+ appropriate third/fourth parameter. */
+#ifndef __USE_FILE_OFFSET64
+extern int __open_2 (__const char *__path, int __oflag);
+#else
+extern int __REDIRECT (__open_2, (__const char *__file, int __oflag),
+ __open64_2) __nonnull ((1));
+#endif
+
+#define open(fname, flags, ...) \
+ ({ int ___r; \
+ /* If the compiler complains about an invalid type, excess elements, etc \
+ in the initialization this means a paraleter of the wrong type has \
+ been passed to open. */ \
+ int ___arr[] = { __VA_ARGS__ }; \
+ if (__builtin_constant_p (flags) && (flags & O_CREAT) != 0) \
+ { \
+ /* If the compile complains about the size of this array type the \
+ the mode parameter is missing since O_CREAT has been used. */ \
+ typedef int __open_missing_mode[(flags & O_CREAT) != 0 \
+ ? ((long int) sizeof (___arr) \
+ - (long int) sizeof (int)) : 1]; \
+ } \
+ if (sizeof (___arr) == 0) \
+ ___r = __open_2 (fname, flags); \
+ else \
+ { \
+ /* If the compile complains about the size of this array type too \
+ many parameters have been passed to open. */ \
+ typedef int __open_too_many_args[-(sizeof (___arr) > sizeof (int))]; \
+ ___r = open (fname, flags, ___arr[0]); \
+ } \
+ ___r; \
+ })
+
+
+#ifdef __USE_LARGEFILE64
+extern int __open64_2 (__const char *__path, int __oflag);
+
+# define open64(fname, flags, ...) \
+ ({ int ___r; \
+ /* If the compiler complains about an invalid type, excess elements, etc \
+ in the initialization this means a paraleter of the wrong type has \
+ been passed to open64. */ \
+ int ___arr[] = { __VA_ARGS__ }; \
+ if (__builtin_constant_p (flags) && (flags & O_CREAT) != 0) \
+ { \
+ /* If the compile complains about the size of this array type the \
+ the mode parameter is missing since O_CREAT has been used. */ \
+ typedef int __open_missing_mode[(flags & O_CREAT) != 0 \
+ ? ((long int) sizeof (___arr) \
+ - (long int) sizeof (int)) : 1]; \
+ } \
+ if (sizeof (___arr) == 0) \
+ ___r = __open64_2 (fname, flags); \
+ else \
+ { \
+ /* If the compile complains about the size of this array type too \
+ many parameters have been passed to open64. */ \
+ typedef int __open_too_many_args[-(sizeof (___arr) > sizeof (int))]; \
+ ___r = open64 (fname, flags, ___arr[0]); \
+ } \
+ ___r; \
+ })
+#endif
+
+#ifdef __USE_ATFILE
+# ifndef __USE_FILE_OFFSET64
+extern int __openat_2 (int __fd, __const char *__path, int __oflag);
+# else
+extern int __REDIRECT (__openat_2, (int __fd, __const char *__file,
+ int __oflag), __openat64_2)
+ __nonnull ((1));
+# endif
+
+# define openat(fd, fname, flags, ...) \
+ ({ int ___r; \
+ /* If the compiler complains about an invalid type, excess elements, etc \
+ in the initialization this means a paraleter of the wrong type has \
+ been passed to openat. */ \
+ int ___arr[] = { __VA_ARGS__ }; \
+ if (__builtin_constant_p (flags) && (flags & O_CREAT) != 0) \
+ { \
+ /* If the compile complains about the size of this array type the \
+ the mode parameter is missing since O_CREAT has been used. */ \
+ typedef int __open_missing_mode[(flags & O_CREAT) != 0 \
+ ? ((long int) sizeof (___arr) \
+ - (long int) sizeof (int)) : 1]; \
+ } \
+ if (sizeof (___arr) == 0) \
+ ___r = __openat_2 (fd, fname, flags); \
+ else \
+ { \
+ /* If the compile complains about the size of this array type too \
+ many parameters have been passed to openat. */ \
+ typedef int __open_too_many_args[-(sizeof (___arr) > sizeof (int))]; \
+ ___r = openat (fd, fname, flags, ___arr[0]); \
+ } \
+ ___r; \
+ })
+
+
+# ifdef __USE_LARGEFILE64
+extern int __openat64_2 (int __fd, __const char *__path, int __oflag);
+
+# define openat64(fd, fname, flags, ...) \
+ ({ int ___r; \
+ /* If the compiler complains about an invalid type, excess elements, etc \
+ in the initialization this means a paraleter of the wrong type has \
+ been passed to openat64. */ \
+ int ___arr[] = { __VA_ARGS__ }; \
+ if (__builtin_constant_p (flags) && (flags & O_CREAT) != 0) \
+ { \
+ /* If the compile complains about the size of this array type the \
+ the mode parameter is missing since O_CREAT has been used. */ \
+ typedef int __open_missing_mode[(flags & O_CREAT) != 0 \
+ ? ((long int) sizeof (___arr) \
+ - (long int) sizeof (int)) : 1]; \
+ } \
+ if (sizeof (___arr) == 0) \
+ ___r = __openat64_2 (fd, fname, flags); \
+ else \
+ { \
+ /* If the compile complains about the size of this array type too \
+ many parameters have been passed to openat. */ \
+ typedef int __open_too_many_args[-(sizeof (___arr) > sizeof (int))]; \
+ ___r = openat64 (fd, fname, flags, ___arr[0]); \
+ } \
+ ___r; \
+ })
+# endif
+#endif