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-rw-r--r--ChangeLog29
-rw-r--r--Versions.def1
-rw-r--r--debug/Versions3
-rw-r--r--debug/fortify_fail.c1
-rw-r--r--include/stdio.h1
-rw-r--r--io/bits/fcntl2.h248
-rw-r--r--io/fcntl.h4
-rw-r--r--misc/sys/cdefs.h12
-rw-r--r--rt/Makefile4
-rw-r--r--rt/Versions3
-rw-r--r--rt/bits/mqueue2.h56
-rw-r--r--rt/mq_open.c16
-rw-r--r--rt/mqueue.h6
-rw-r--r--sysdeps/unix/sysv/linux/mq_open.c14
14 files changed, 258 insertions, 140 deletions
diff --git a/ChangeLog b/ChangeLog
index b27b3e53cc..e7e30ee377 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,32 @@
+2007-09-15 Jakub Jelinek <jakub@redhat.com>
+
+ * rt/Versions (librt): Export __mq_open_2@@GLIBC_2.7.
+ * rt/Makefile (headers): Add bits/mqueue2.h.
+ * rt/mqueue.h: Include bits/mqueue2.h if -D_FORTIFY_SOURCE=2,
+ optimizing with GCC and __va_arg_pack_len is defined.
+ * rt/bits/mqueue2.h: New file.
+ * rt/mq_open.c (__mq_open): Renamed from mq_open.
+ (mq_open): New strong_alias.
+ (__mq_open_2): New function.
+ * sysdeps/unix/sysv/linux/mq_open.c (__mq_open): Renamed from mq_open.
+ (mq_open): New strong_alias.
+ (__mq_open_2): New function.
+ * debug/Versions (libc): Export __fortify_fail@@GLIBC_PRIVATE.
+ * Versions.def (librt): Add GLIBC_2.7 version.
+ * debug/fortify_fail.c (__fortify_fail): Add libc_hidden_def.
+ * include/stdio.h (__fortify_fail): Add libc_hidden_proto.
+
+ * misc/sys/cdefs.h (__errordecl, __va_arg_pack_len): Define.
+ * io/fcntl.h: Include bits/fcntl2.h when __va_arg_pack_len
+ is defined rather than when not C++.
+ * io/bits/fcntl2.h (__open_alias, __open64_alias, __openat_alias,
+ __openat64_alias): New redirects.
+ (__open_too_many_args, __open_missing_mode, __open64_too_many_args,
+ __open64_missing_mode, __openat_too_many_args, __openat_missing_mode,
+ __openat64_too_many_args, __openat64_missing_mode): New __errordecls.
+ (open, open64, openat, openat64): Rewrite as __extern_always_inline
+ functions instead of function-like macros.
+
2007-09-14 H.J. Lu <hongjiu.lu@intel.com>
* sysdeps/i386/i586/memcpy.S (__memcpy_chk): New definition.
diff --git a/Versions.def b/Versions.def
index 7365b54a1b..af377826e0 100644
--- a/Versions.def
+++ b/Versions.def
@@ -100,6 +100,7 @@ librt {
GLIBC_2.3.3
GLIBC_2.3.4
GLIBC_2.4
+ GLIBC_2.7
}
libutil {
GLIBC_2.0
diff --git a/debug/Versions b/debug/Versions
index 31c1e83a61..e467cc0602 100644
--- a/debug/Versions
+++ b/debug/Versions
@@ -42,4 +42,7 @@ libc {
GLIBC_2.7 {
__fread_chk; __fread_unlocked_chk;
}
+ GLIBC_PRIVATE {
+ __fortify_fail;
+ }
}
diff --git a/debug/fortify_fail.c b/debug/fortify_fail.c
index 66494a678f..3b5821e934 100644
--- a/debug/fortify_fail.c
+++ b/debug/fortify_fail.c
@@ -32,3 +32,4 @@ __fortify_fail (msg)
__libc_message (2, "*** %s ***: %s terminated\n",
msg, __libc_argv[0] ?: "<unknown>");
}
+libc_hidden_def (__fortify_fail)
diff --git a/include/stdio.h b/include/stdio.h
index 84b8af9da1..4b30e6a359 100644
--- a/include/stdio.h
+++ b/include/stdio.h
@@ -67,6 +67,7 @@ extern void __libc_fatal (__const char *__message)
__attribute__ ((__noreturn__));
extern void __libc_message (int do_abort, __const char *__fnt, ...);
extern void __fortify_fail (const char *msg) __attribute__ ((noreturn));
+libc_hidden_proto (__fortify_fail)
/* Acquire ownership of STREAM. */
extern void __flockfile (FILE *__stream);
diff --git a/io/bits/fcntl2.h b/io/bits/fcntl2.h
index 5b9fcd5e71..fbe85852cc 100644
--- a/io/bits/fcntl2.h
+++ b/io/bits/fcntl2.h
@@ -25,161 +25,149 @@
appropriate third/fourth parameter. */
#ifndef __USE_FILE_OFFSET64
extern int __open_2 (__const char *__path, int __oflag) __nonnull ((1));
+extern int __REDIRECT (__open_alias, (__const char *__path, int __oflag, ...),
+ open) __nonnull ((1));
#else
-extern int __REDIRECT (__open_2, (__const char *__file, int __oflag),
+extern int __REDIRECT (__open_2, (__const char *__path, int __oflag),
__open64_2) __nonnull ((1));
+extern int __REDIRECT (__open_alias, (__const char *__path, int __oflag, ...),
+ open64) __nonnull ((1));
#endif
+__errordecl (__open_too_many_args,
+ "open can be called either with 2 or 3 arguments, not more");
+__errordecl (__open_missing_mode,
+ "open with O_CREAT in second argument needs 3 arguments");
-#define open(fname, flags, ...) \
- (__extension__ \
- ({ int ___r; \
- /* If the compiler complains about an invalid type, excess elements, \
- etc. in the initialization this means a parameter of the wrong type \
- has been passed to open. */ \
- int ___arr[] = { __VA_ARGS__ }; \
- if (__builtin_constant_p (flags) && ((flags) & O_CREAT) != 0) \
- { \
- /* If the compiler complains about the size of this array type 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) \
- { \
- if (__builtin_constant_p (flags) && ((flags) & O_CREAT) == 0) \
- ___r = open (fname, flags); \
- else \
- ___r = __open_2 (fname, flags); \
- } \
- else \
- { \
- /* If the compiler 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; \
- }))
+__extern_always_inline int
+open (__const char *__path, int __oflag, ...)
+{
+ if (__va_arg_pack_len () > 1)
+ __open_too_many_args ();
+
+ if (__builtin_constant_p (__oflag))
+ {
+ if ((__oflag & O_CREAT) != 0 && __va_arg_pack_len () < 1)
+ {
+ __open_missing_mode ();
+ return __open_2 (__path, __oflag);
+ }
+ return __open_alias (__path, __oflag, __va_arg_pack ());
+ }
+
+ if (__va_arg_pack_len () < 1)
+ return __open_2 (__path, __oflag);
+
+ return __open_alias (__path, __oflag, __va_arg_pack ());
+}
#ifdef __USE_LARGEFILE64
extern int __open64_2 (__const char *__path, int __oflag) __nonnull ((1));
+extern int __REDIRECT (__open64_alias, (__const char *__path, int __oflag,
+ ...), open64) __nonnull ((1));
+__errordecl (__open64_too_many_args,
+ "open64 can be called either with 2 or 3 arguments, not more");
+__errordecl (__open64_missing_mode,
+ "open64 with O_CREAT in second argument needs 3 arguments");
+
+__extern_always_inline int
+open64 (__const char *__path, int __oflag, ...)
+{
+ if (__va_arg_pack_len () > 1)
+ __open64_too_many_args ();
-# define open64(fname, flags, ...) \
- (__extension__ \
- ({ int ___r; \
- /* If the compiler complains about an invalid type, excess elements, \
- etc. in the initialization this means a parameter of the wrong type \
- has been passed to open64. */ \
- int ___arr[] = { __VA_ARGS__ }; \
- if (__builtin_constant_p (flags) && ((flags) & O_CREAT) != 0) \
- { \
- /* If the compiler complains about the size of this array type 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) \
- { \
- if (__builtin_constant_p (flags) && ((flags) & O_CREAT) == 0) \
- ___r = open64 (fname, flags); \
- else \
- ___r = __open64_2 (fname, flags); \
- } \
- else \
- { \
- /* If the compiler 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; \
- }))
+ if (__builtin_constant_p (__oflag))
+ {
+ if ((__oflag & O_CREAT) != 0 && __va_arg_pack_len () < 1)
+ {
+ __open64_missing_mode ();
+ return __open64_2 (__path, __oflag);
+ }
+ return __open64_alias (__path, __oflag, __va_arg_pack ());
+ }
+
+ if (__va_arg_pack_len () < 1)
+ return __open64_2 (__path, __oflag);
+
+ return __open64_alias (__path, __oflag, __va_arg_pack ());
+}
#endif
+
#ifdef __USE_ATFILE
# ifndef __USE_FILE_OFFSET64
extern int __openat_2 (int __fd, __const char *__path, int __oflag)
__nonnull ((2));
+extern int __REDIRECT (__openat_alias, (int __fd, __const char *__path,
+ int __oflag, ...), openat)
+ __nonnull ((2));
# else
-extern int __REDIRECT (__openat_2, (int __fd, __const char *__file,
+extern int __REDIRECT (__openat_2, (int __fd, __const char *__path,
int __oflag), __openat64_2)
__nonnull ((2));
+extern int __REDIRECT (__openat_alias, (int __fd, __const char *__path,
+ int __oflag, ...), openat64)
+ __nonnull ((2));
# endif
+__errordecl (__openat_too_many_args,
+ "openat can be called either with 3 or 4 arguments, not more");
+__errordecl (__openat_missing_mode,
+ "openat with O_CREAT in third argument needs 4 arguments");
+
+__extern_always_inline int
+openat (int __fd, __const char *__path, int __oflag, ...)
+{
+ if (__va_arg_pack_len () > 1)
+ __openat_too_many_args ();
+
+ if (__builtin_constant_p (__oflag))
+ {
+ if ((__oflag & O_CREAT) != 0 && __va_arg_pack_len () < 1)
+ {
+ __openat_missing_mode ();
+ return __openat_2 (__fd, __path, __oflag);
+ }
+ return __openat_alias (__fd, __path, __oflag, __va_arg_pack ());
+ }
+
+ if (__va_arg_pack_len () < 1)
+ return __openat_2 (__fd, __path, __oflag);
-# define openat(fd, fname, flags, ...) \
- (__extension__ \
- ({ int ___r; \
- /* If the compiler complains about an invalid type, excess elements, \
- etc. in the initialization this means a parameter of the wrong type \
- has been passed to openat. */ \
- int ___arr[] = { __VA_ARGS__ }; \
- if (__builtin_constant_p (flags) && ((flags) & O_CREAT) != 0) \
- { \
- /* If the compiler complains about the size of this array type 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) \
- { \
- if (__builtin_constant_p (flags) && ((flags) & O_CREAT) == 0) \
- ___r = openat (fd, fname, flags); \
- else \
- ___r = __openat_2 (fd, fname, flags); \
- } \
- else \
- { \
- /* If the compiler 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; \
- }))
+ return __openat_alias (__fd, __path, __oflag, __va_arg_pack ());
+}
# ifdef __USE_LARGEFILE64
extern int __openat64_2 (int __fd, __const char *__path, int __oflag)
__nonnull ((2));
+extern int __REDIRECT (__openat64_alias, (int __fd, __const char *__path,
+ int __oflag, ...), openat64)
+ __nonnull ((2));
+__errordecl (__openat64_too_many_args,
+ "openat64 can be called either with 3 or 4 arguments, not more");
+__errordecl (__openat64_missing_mode,
+ "openat64 with O_CREAT in third argument needs 4 arguments");
+
+__extern_always_inline int
+openat64 (int __fd, __const char *__path, int __oflag, ...)
+{
+ if (__va_arg_pack_len () > 1)
+ __openat64_too_many_args ();
+
+ if (__builtin_constant_p (__oflag))
+ {
+ if ((__oflag & O_CREAT) != 0 && __va_arg_pack_len () < 1)
+ {
+ __openat64_missing_mode ();
+ return __openat64_2 (__fd, __path, __oflag);
+ }
+ return __openat64_alias (__fd, __path, __oflag, __va_arg_pack ());
+ }
+
+ if (__va_arg_pack_len () < 1)
+ return __openat64_2 (__fd, __path, __oflag);
-# define openat64(fd, fname, flags, ...) \
- (__extension__ \
- ({ int ___r; \
- /* If the compiler complains about an invalid type, excess elements, \
- etc. in the initialization this means a parameter of the wrong type \
- has been passed to openat64. */ \
- int ___arr[] = { __VA_ARGS__ }; \
- if (__builtin_constant_p (flags) && ((flags) & O_CREAT) != 0) \
- { \
- /* If the compiler complains about the size of this array type 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) \
- { \
- if (__builtin_constant_p (flags) && ((flags) & O_CREAT) == 0) \
- ___r = openat64 (fd, fname, flags); \
- else \
- ___r = __openat64_2 (fd, fname, flags); \
- } \
- else \
- { \
- /* If the compiler complains about the size of this array type too \
- many parameters have been passed to openat64. */ \
- typedef int __open_too_many_args[-(sizeof (___arr) \
- > sizeof (int))]; \
- ___r = openat64 (fd, fname, flags, ___arr[0]); \
- } \
- ___r; \
- }))
+ return __openat64_alias (__fd, __path, __oflag, __va_arg_pack ());
+}
# endif
#endif
diff --git a/io/fcntl.h b/io/fcntl.h
index 6bfa9fd6cf..330bb30885 100644
--- a/io/fcntl.h
+++ b/io/fcntl.h
@@ -211,9 +211,9 @@ extern int posix_fallocate64 (int __fd, __off64_t __offset, __off64_t __len);
#endif
-/* Define some macros helping to catch common problems. */
+/* Define some inlines helping to catch common problems. */
#if __USE_FORTIFY_LEVEL > 0 && defined __extern_always_inline \
- && !defined __cplusplus
+ && defined __va_arg_pack_len
# include <bits/fcntl2.h>
#endif
diff --git a/misc/sys/cdefs.h b/misc/sys/cdefs.h
index bacfe2f63f..6b2a4fd881 100644
--- a/misc/sys/cdefs.h
+++ b/misc/sys/cdefs.h
@@ -132,6 +132,7 @@
#define __bos(ptr) __builtin_object_size (ptr, __USE_FORTIFY_LEVEL > 1)
#define __bos0(ptr) __builtin_object_size (ptr, 0)
#define __warndecl(name, msg) extern void name (void)
+#define __errordecl(name, msg) extern void name (void)
/* Support for flexible arrays. */
@@ -281,7 +282,10 @@
/* GCC 4.3 and above with -std=c99 or -std=gnu99 implements ISO C99
inline semantics, unless -fgnu89-inline is used. */
-#if !defined __cplusplus || __GNUC_PREREQ (4,3)
+#if !defined __cplusplus || __GNUC_PREREQ (4,3) \
+ || (defined __GNUC_RH_RELEASE__ && __GNUC__ == 4 \
+ && __GNUC_MINOR__ == 1 && __GNUC_PATCHLEVEL__ == 2 \
+ && __GNUC_RH_RELEASE__ >= 23)
# if defined __GNUC_STDC_INLINE__ || defined __cplusplus
# define __extern_inline extern __inline __attribute__ ((__gnu_inline__))
# define __extern_always_inline \
@@ -294,8 +298,12 @@
/* GCC 4.3 and above allow passing all anonymous arguments of an
__extern_always_inline function to some other vararg function. */
-#if __GNUC_PREREQ (4,3)
+#if __GNUC_PREREQ (4,3) \
+ || (defined __GNUC_RH_RELEASE__ && __GNUC__ == 4 \
+ && __GNUC_MINOR__ == 1 && __GNUC_PATCHLEVEL__ == 2 \
+ && __GNUC_RH_RELEASE__ >= 23)
# define __va_arg_pack() __builtin_va_arg_pack ()
+# define __va_arg_pack_len() __builtin_va_arg_pack_len ()
#endif
/* It is possible to compile containing GCC extensions even if GCC is
diff --git a/rt/Makefile b/rt/Makefile
index 148ded996e..fe25309098 100644
--- a/rt/Makefile
+++ b/rt/Makefile
@@ -1,4 +1,4 @@
-# Copyright (C) 1997-2004, 2006 Free Software Foundation, Inc.
+# Copyright (C) 1997-2004, 2006, 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
@@ -21,7 +21,7 @@
#
subdir := rt
-headers := aio.h mqueue.h bits/mqueue.h
+headers := aio.h mqueue.h bits/mqueue.h bits/mqueue2.h
aio-routines := aio_cancel aio_error aio_fsync aio_misc aio_read \
aio_read64 aio_return aio_suspend aio_write \
diff --git a/rt/Versions b/rt/Versions
index 51bb033ec9..2921c9c8ab 100644
--- a/rt/Versions
+++ b/rt/Versions
@@ -22,4 +22,7 @@ librt {
mq_open; mq_close; mq_unlink; mq_getattr; mq_setattr;
mq_notify; mq_send; mq_receive; mq_timedsend; mq_timedreceive;
}
+ GLIBC_2.7 {
+ __mq_open_2;
+ }
}
diff --git a/rt/bits/mqueue2.h b/rt/bits/mqueue2.h
new file mode 100644
index 0000000000..4c90609e83
--- /dev/null
+++ b/rt/bits/mqueue2.h
@@ -0,0 +1,56 @@
+/* Checking macros for mq 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/mqueue2.h> directly; use <mqueue.h> instead."
+#endif
+
+/* Check that calls to mq_open with O_CREAT set have an appropriate third and fourth
+ parameter. */
+extern mqd_t mq_open (__const char *__name, int __oflag, ...)
+ __THROW __nonnull ((1));
+extern mqd_t __mq_open_2 (__const char *__name, int __oflag) __nonnull ((1));
+extern mqd_t __REDIRECT (__mq_open_alias, (__const char *__name, int __oflag, ...),
+ mq_open) __nonnull ((1));
+__errordecl (__mq_open_wrong_number_of_args,
+ "mq_open can be called either with 2 or 4 arguments");
+__errordecl (__mq_open_missing_mode_and_attr,
+ "mq_open with O_CREAT in second argument needs 4 arguments");
+
+__extern_always_inline mqd_t
+mq_open (__const char *__name, int __oflag, ...)
+{
+ if (__va_arg_pack_len () != 0 && __va_arg_pack_len () != 2)
+ __mq_open_wrong_number_of_args ();
+
+ if (__builtin_constant_p (__oflag))
+ {
+ if ((__oflag & O_CREAT) != 0 && __va_arg_pack_len () == 0)
+ {
+ __mq_open_missing_mode_and_attr ();
+ return __mq_open_2 (__name, __oflag);
+ }
+ return __mq_open_alias (__name, __oflag, __va_arg_pack ());
+ }
+
+ if (__va_arg_pack_len () == 0)
+ return __mq_open_2 (__name, __oflag);
+
+ return __mq_open_alias (__name, __oflag, __va_arg_pack ());
+}
diff --git a/rt/mq_open.c b/rt/mq_open.c
index dea5741d5a..77d872ea20 100644
--- a/rt/mq_open.c
+++ b/rt/mq_open.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2004 Free Software Foundation, Inc.
+/* Copyright (C) 2004, 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
@@ -18,6 +18,7 @@
#include <errno.h>
#include <mqueue.h>
+#include <stdio.h>
/* Establish connection between a process and a message queue NAME and
return message queue descriptor or (mqd_t) -1 on error. OFLAG determines
@@ -27,10 +28,21 @@
attributes. If the fourth argument is NULL, default attributes are
used. */
mqd_t
-mq_open (const char *name, int oflag, ...)
+__mq_open (const char *name, int oflag, ...)
{
__set_errno (ENOSYS);
return (mqd_t) -1;
}
+strong_alias (__mq_open, mq_open);
stub_warning (mq_open)
+
+mqd_t
+__mq_open_2 (const char *name, int oflag)
+{
+ if (oflag & O_CREAT)
+ __fortify_fail ("invalid mq_open call: O_CREAT without mode and attr");
+
+ return __mq_open (name, oflag);
+}
+stub_warning (__mq_open_2)
#include <stub-tag.h>
diff --git a/rt/mqueue.h b/rt/mqueue.h
index b811330332..a4c3e1b2fa 100644
--- a/rt/mqueue.h
+++ b/rt/mqueue.h
@@ -90,6 +90,12 @@ extern int mq_timedsend (mqd_t __mqdes, __const char *__msg_ptr,
__nonnull ((2, 5));
#endif
+/* Define some inlines helping to catch common problems. */
+#if __USE_FORTIFY_LEVEL > 0 && defined __extern_always_inline \
+ && defined __va_arg_pack_len
+# include <bits/mqueue2.h>
+#endif
+
__END_DECLS
#endif /* mqueue.h */
diff --git a/sysdeps/unix/sysv/linux/mq_open.c b/sysdeps/unix/sysv/linux/mq_open.c
index eac6e01238..6330fee4e7 100644
--- a/sysdeps/unix/sysv/linux/mq_open.c
+++ b/sysdeps/unix/sysv/linux/mq_open.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2004, 2005 Free Software Foundation, Inc.
+/* Copyright (C) 2004, 2005, 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
@@ -20,6 +20,7 @@
#include <mqueue.h>
#include <stdarg.h>
#include <stddef.h>
+#include <stdio.h>
#include <sysdep.h>
#ifdef __NR_mq_open
@@ -32,7 +33,7 @@
attributes. If the fourth argument is NULL, default attributes are
used. */
mqd_t
-mq_open (const char *name, int oflag, ...)
+__mq_open (const char *name, int oflag, ...)
{
if (name[0] != '/')
{
@@ -54,7 +55,16 @@ mq_open (const char *name, int oflag, ...)
return INLINE_SYSCALL (mq_open, 4, name + 1, oflag, mode, attr);
}
+strong_alias (__mq_open, mq_open);
+mqd_t
+__mq_open_2 (const char *name, int oflag)
+{
+ if (oflag & O_CREAT)
+ __fortify_fail ("invalid mq_open call: O_CREAT without mode and attr");
+
+ return __mq_open (name, oflag);
+}
#else
# include <rt/mq_open.c>
#endif