* [PATCH v1 10/10] cygwin: create libssp compatibility import library
2017-11-01 4:53 [PATCH v1 00/10] Add Stack Smashing Protection and Object Size Checking Yaakov Selkowitz
@ 2017-11-01 4:53 ` Yaakov Selkowitz
2017-11-01 4:53 ` [PATCH v1 03/10] ssp: add Object Size Checking for bcopy, bzero Yaakov Selkowitz
` (9 subsequent siblings)
10 siblings, 0 replies; 13+ messages in thread
From: Yaakov Selkowitz @ 2017-11-01 4:53 UTC (permalink / raw)
To: newlib
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
---
winsup/cygwin/Makefile.in | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/winsup/cygwin/Makefile.in b/winsup/cygwin/Makefile.in
index add1de0e9..16fef13f7 100644
--- a/winsup/cygwin/Makefile.in
+++ b/winsup/cygwin/Makefile.in
@@ -540,7 +540,7 @@ endif
API_VER:=$(srcdir)/include/cygwin/version.h
LIB_NAME:=libcygwin.a
-SUBLIBS:=libpthread.a libutil.a ${CURDIR}/libm.a ${CURDIR}/libc.a libdl.a libresolv.a librt.a libacl.a
+SUBLIBS:=libpthread.a libutil.a ${CURDIR}/libm.a ${CURDIR}/libc.a libdl.a libresolv.a librt.a libacl.a libssp.a
EXTRALIBS:=libautomode.a libbinmode.a libtextmode.a libtextreadmode.a
INSTOBJS:=automode.o binmode.o textmode.o textreadmode.o
TARGET_LIBS:=$(LIB_NAME) $(CYGWIN_START) $(GMON_START) $(LIBGMON_A) $(SUBLIBS) $(INSTOBJS) $(EXTRALIBS)
@@ -745,6 +745,9 @@ librt.a: ${LIB_NAME} posix_ipc.o
libacl.a: ${LIB_NAME} sec_posixacl.o
${speclib} ${@F}
+libssp.a: ${LIB_NAME} $(newlib_build)/libc/ssp/lib.a
+ ${speclib} ${@F}
+
${EXTRALIBS}: lib%.a: %.o
$(AR) cru $@ $?
--
2.14.3
^ permalink raw reply [flat|nested] 13+ messages in thread
* [PATCH v1 05/10] ssp: add Object Size Checking for basic unistd.h functions
2017-11-01 4:53 [PATCH v1 00/10] Add Stack Smashing Protection and Object Size Checking Yaakov Selkowitz
` (3 preceding siblings ...)
2017-11-01 4:53 ` [PATCH v1 02/10] ssp: add Object Size Checking for basic string functions Yaakov Selkowitz
@ 2017-11-01 4:53 ` Yaakov Selkowitz
2017-11-01 4:53 ` [PATCH v1 06/10] ssp: document _FORTIFY_SOURCE with the feature test macros Yaakov Selkowitz
` (5 subsequent siblings)
10 siblings, 0 replies; 13+ messages in thread
From: Yaakov Selkowitz @ 2017-11-01 4:53 UTC (permalink / raw)
To: newlib
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
---
newlib/libc/include/ssp/unistd.h | 51 ++++++++++++++++++++++++++++++++++++++++
newlib/libc/include/sys/unistd.h | 10 ++++++++
2 files changed, 61 insertions(+)
create mode 100644 newlib/libc/include/ssp/unistd.h
diff --git a/newlib/libc/include/ssp/unistd.h b/newlib/libc/include/ssp/unistd.h
new file mode 100644
index 000000000..e5089364e
--- /dev/null
+++ b/newlib/libc/include/ssp/unistd.h
@@ -0,0 +1,51 @@
+/* $NetBSD: unistd.h,v 1.7 2015/06/25 18:41:03 joerg Exp $ */
+
+/*-
+ * Copyright (c) 2006 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Christos Zoulas.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef _SSP_UNISTD_H_
+#define _SSP_UNISTD_H_
+
+#include <ssp/ssp.h>
+
+#if __SSP_FORTIFY_LEVEL > 0
+__BEGIN_DECLS
+
+__ssp_redirect0(ssize_t, read, (int __fd, void *__buf, size_t __len), \
+ (__fd, __buf, __len));
+
+__ssp_redirect(ssize_t, readlink, (const char *__restrict __path, \
+ char *__restrict __buf, size_t __len), (__path, __buf, __len));
+
+__ssp_redirect_raw(char *, getcwd, getcwd, (char *__buf, size_t __len),
+ (__buf, __len), __buf != 0, __ssp_bos);
+
+__END_DECLS
+
+#endif /* __SSP_FORTIFY_LEVEL > 0 */
+#endif /* _SSP_UNISTD_H_ */
diff --git a/newlib/libc/include/sys/unistd.h b/newlib/libc/include/sys/unistd.h
index 75f8a51df..3cc5bd3b8 100644
--- a/newlib/libc/include/sys/unistd.h
+++ b/newlib/libc/include/sys/unistd.h
@@ -13,6 +13,10 @@ extern "C" {
#include <sys/_types.h>
#include <stddef.h>
+#if _FORTIFY_SOURCE > 0
+#include <ssp/unistd.h>
+#endif
+
extern char **environ;
void _EXFUN(_exit, (int __status ) _ATTRIBUTE ((__noreturn__)));
@@ -93,7 +97,9 @@ int _EXFUN(fdatasync, (int __fd));
#if __GNU_VISIBLE
char * _EXFUN(get_current_dir_name, (void));
#endif
+#if !__SSP_FORTIFY_LEVEL
char * _EXFUN(getcwd, (char *__buf, size_t __size ));
+#endif
#if __BSD_VISIBLE || (__XSI_VISIBLE && __XSI_VISIBLE < 500)
int _EXFUN(getdomainname ,(char *__name, size_t __len));
#endif
@@ -170,7 +176,9 @@ int _EXFUN(pipe2, (int __fildes[2], int flags));
#endif
ssize_t _EXFUN(pread, (int __fd, void *__buf, size_t __nbytes, off_t __offset));
ssize_t _EXFUN(pwrite, (int __fd, const void *__buf, size_t __nbytes, off_t __offset));
+#if !__SSP_FORTIFY_LEVEL
_READ_WRITE_RETURN_TYPE _EXFUN(read, (int __fd, void *__buf, size_t __nbyte ));
+#endif
#if __BSD_VISIBLE
int _EXFUN(rresvport, (int *__alport));
int _EXFUN(revoke, (char *__path));
@@ -290,8 +298,10 @@ void _EXFUN(sync, (void));
#endif
#if __BSD_VISIBLE || __POSIX_VISIBLE >= 200112 || __XSI_VISIBLE >= 4
+#if !__SSP_FORTIFY_LEVEL
ssize_t _EXFUN(readlink, (const char *__restrict __path,
char *__restrict __buf, size_t __buflen));
+#endif
int _EXFUN(symlink, (const char *__name1, const char *__name2));
#endif
#if __ATFILE_VISIBLE
--
2.14.3
^ permalink raw reply [flat|nested] 13+ messages in thread
* [PATCH v1 06/10] ssp: document _FORTIFY_SOURCE with the feature test macros
2017-11-01 4:53 [PATCH v1 00/10] Add Stack Smashing Protection and Object Size Checking Yaakov Selkowitz
` (4 preceding siblings ...)
2017-11-01 4:53 ` [PATCH v1 05/10] ssp: add Object Size Checking for basic unistd.h functions Yaakov Selkowitz
@ 2017-11-01 4:53 ` Yaakov Selkowitz
2017-11-01 4:58 ` [PATCH v1 08/10] ssp: install headers Yaakov Selkowitz
` (4 subsequent siblings)
10 siblings, 0 replies; 13+ messages in thread
From: Yaakov Selkowitz @ 2017-11-01 4:53 UTC (permalink / raw)
To: newlib
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
---
newlib/libc/include/sys/features.h | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/newlib/libc/include/sys/features.h b/newlib/libc/include/sys/features.h
index c9133af57..53a100d50 100644
--- a/newlib/libc/include/sys/features.h
+++ b/newlib/libc/include/sys/features.h
@@ -100,6 +100,9 @@ extern "C" {
* _SVID_SOURCE (deprecated by _DEFAULT_SOURCE)
* _DEFAULT_SOURCE (or none of the above)
* POSIX-1.2008 with BSD and SVr4 extensions
+ *
+ * _FORTIFY_SOURCE = 1 or 2
+ * Object Size Checking function wrappers
*/
#ifdef _GNU_SOURCE
@@ -233,9 +236,11 @@ extern "C" {
* __GNU_VISIBLE
* GNU extensions; enabled with _GNU_SOURCE.
*
+ * __SSP_FORTIFY_LEVEL
+ * Object Size Checking; defined to 0 (off), 1, or 2 in <ssp/ssp.h>.
+ *
* In all cases above, "enabled by default" means either by defining
* _DEFAULT_SOURCE, or by not defining any of the public feature test macros.
- * Defining _GNU_SOURCE makes all of the above avaliable.
*/
#ifdef _ATFILE_SOURCE
--
2.14.3
^ permalink raw reply [flat|nested] 13+ messages in thread
* [PATCH v1 03/10] ssp: add Object Size Checking for bcopy, bzero
2017-11-01 4:53 [PATCH v1 00/10] Add Stack Smashing Protection and Object Size Checking Yaakov Selkowitz
2017-11-01 4:53 ` [PATCH v1 10/10] cygwin: create libssp compatibility import library Yaakov Selkowitz
@ 2017-11-01 4:53 ` Yaakov Selkowitz
2017-11-01 4:53 ` [PATCH v1 01/10] ssp: add APIs for Stack Smashing Protection (-fstack-protector*) Yaakov Selkowitz
` (8 subsequent siblings)
10 siblings, 0 replies; 13+ messages in thread
From: Yaakov Selkowitz @ 2017-11-01 4:53 UTC (permalink / raw)
To: newlib
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
---
newlib/libc/include/ssp/strings.h | 48 +++++++++++++++++++++++++++++++++++++++
newlib/libc/include/strings.h | 4 ++++
2 files changed, 52 insertions(+)
create mode 100644 newlib/libc/include/ssp/strings.h
diff --git a/newlib/libc/include/ssp/strings.h b/newlib/libc/include/ssp/strings.h
new file mode 100644
index 000000000..1341a0f88
--- /dev/null
+++ b/newlib/libc/include/ssp/strings.h
@@ -0,0 +1,48 @@
+/* $NetBSD: strings.h,v 1.3 2008/04/28 20:22:54 martin Exp $ */
+
+/*-
+ * Copyright (c) 2007 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Christos Zoulas.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef _SSP_STRINGS_H_
+#define _SSP_STRINGS_H_
+
+#include <ssp/ssp.h>
+
+#if __SSP_FORTIFY_LEVEL > 0
+
+#define bcopy(src, dst, len) \
+ ((__ssp_bos0(dst) != (size_t)-1) ? \
+ __builtin___memmove_chk(dst, src, len, __ssp_bos0(dst)) : \
+ __memmove_ichk(dst, src, len))
+#define bzero(dst, len) \
+ ((__ssp_bos0(dst) != (size_t)-1) ? \
+ __builtin___memset_chk(dst, 0, len, __ssp_bos0(dst)) : \
+ __memset_ichk(dst, 0, len))
+
+#endif /* __SSP_FORTIFY_LEVEL > 0 */
+#endif /* _SSP_STRINGS_H_ */
diff --git a/newlib/libc/include/strings.h b/newlib/libc/include/strings.h
index 122f2fcd6..f422b6a8c 100644
--- a/newlib/libc/include/strings.h
+++ b/newlib/libc/include/strings.h
@@ -75,4 +75,8 @@ int strncasecmp_l (const char *, const char *, size_t, locale_t);
#endif
__END_DECLS
+#if _FORTIFY_SOURCE > 0
+#include <ssp/strings.h>
+#endif
+
#endif /* _STRINGS_H_ */
--
2.14.3
^ permalink raw reply [flat|nested] 13+ messages in thread
* [PATCH v1 00/10] Add Stack Smashing Protection and Object Size Checking
@ 2017-11-01 4:53 Yaakov Selkowitz
2017-11-01 4:53 ` [PATCH v1 10/10] cygwin: create libssp compatibility import library Yaakov Selkowitz
` (10 more replies)
0 siblings, 11 replies; 13+ messages in thread
From: Yaakov Selkowitz @ 2017-11-01 4:53 UTC (permalink / raw)
To: newlib
This is an initial draft; I am using the topic/ssp branch for development
of this feature.
In the process of overhauling our feature test macros, I discovered that
GCC's libssp implementation of Object Size Checking (-D_FORTIFY_SOURCE=*) is
completely broken and possibly unfixable (CVE-2016-4973). Therefore, it
seems the only way to make this work is to integrate it to Newlib itself like
other libc's.
I used NetBSD as the basis for much of this. While relatively limited in
coverage compared to glibc (which we can't take from), it should provide the
foundation needed to add more coverage in the future.
This does require some minor changes in configuring GCC because its libssp
would conflict with this (as it similarly conflicts with glibc), as noted in
the commit messages.
There is probably a more portable way of getting a random canary for the
benefit of bare metal targets (since arc4random required getentropy), but
the terminator canary does work (tested with mmix target).
Yaakov Selkowitz (10):
ssp: add APIs for Stack Smashing Protection (-fstack-protector*)
ssp: add Object Size Checking for basic string functions
ssp: add Object Size Checking for bcopy, bzero
ssp: add Object Size Checking for basic stdio functions
ssp: add Object Size Checking for basic unistd.h functions
ssp: document _FORTIFY_SOURCE with the feature test macros
ssp: add build infrastructure
ssp: install headers
cygwin: export SSP functions
cygwin: create libssp compatibility import library
newlib/Makefile.am | 4 +
newlib/Makefile.in | 4 +
newlib/libc/Makefile.am | 4 +-
newlib/libc/Makefile.in | 15 +-
newlib/libc/configure | 3 +-
newlib/libc/configure.in | 2 +-
newlib/libc/include/ssp/ssp.h | 93 +++++
newlib/libc/include/ssp/stdio.h | 74 ++++
newlib/libc/include/ssp/string.h | 112 ++++++
newlib/libc/include/ssp/strings.h | 48 +++
newlib/libc/include/ssp/unistd.h | 51 +++
newlib/libc/include/stdio.h | 4 +
newlib/libc/include/string.h | 4 +
newlib/libc/include/strings.h | 4 +
newlib/libc/include/sys/features.h | 7 +-
newlib/libc/include/sys/unistd.h | 10 +
newlib/libc/ssp/Makefile.am | 71 ++++
newlib/libc/ssp/Makefile.in | 714 +++++++++++++++++++++++++++++++++
newlib/libc/ssp/chk_fail.c | 13 +
newlib/libc/ssp/fgets_chk.c | 55 +++
newlib/libc/ssp/gets_chk.c | 78 ++++
newlib/libc/ssp/memcpy_chk.c | 54 +++
newlib/libc/ssp/memmove_chk.c | 50 +++
newlib/libc/ssp/mempcpy_chk.c | 21 +
newlib/libc/ssp/memset_chk.c | 49 +++
newlib/libc/ssp/snprintf_chk.c | 59 +++
newlib/libc/ssp/sprintf_chk.c | 63 +++
newlib/libc/ssp/stack_protector.c | 46 +++
newlib/libc/ssp/stpcpy_chk.c | 58 +++
newlib/libc/ssp/stpncpy_chk.c | 56 +++
newlib/libc/ssp/strcat_chk.c | 62 +++
newlib/libc/ssp/strcpy_chk.c | 55 +++
newlib/libc/ssp/strncat_chk.c | 73 ++++
newlib/libc/ssp/strncpy_chk.c | 55 +++
newlib/libc/ssp/vsnprintf_chk.c | 51 +++
newlib/libc/ssp/vsprintf_chk.c | 60 +++
winsup/cygwin/Makefile.in | 5 +-
winsup/cygwin/common.din | 20 +
winsup/cygwin/include/cygwin/version.h | 7 +-
39 files changed, 2202 insertions(+), 12 deletions(-)
create mode 100644 newlib/libc/include/ssp/ssp.h
create mode 100644 newlib/libc/include/ssp/stdio.h
create mode 100644 newlib/libc/include/ssp/string.h
create mode 100644 newlib/libc/include/ssp/strings.h
create mode 100644 newlib/libc/include/ssp/unistd.h
create mode 100644 newlib/libc/ssp/Makefile.am
create mode 100644 newlib/libc/ssp/Makefile.in
create mode 100644 newlib/libc/ssp/chk_fail.c
create mode 100644 newlib/libc/ssp/fgets_chk.c
create mode 100644 newlib/libc/ssp/gets_chk.c
create mode 100644 newlib/libc/ssp/memcpy_chk.c
create mode 100644 newlib/libc/ssp/memmove_chk.c
create mode 100644 newlib/libc/ssp/mempcpy_chk.c
create mode 100644 newlib/libc/ssp/memset_chk.c
create mode 100644 newlib/libc/ssp/snprintf_chk.c
create mode 100644 newlib/libc/ssp/sprintf_chk.c
create mode 100644 newlib/libc/ssp/stack_protector.c
create mode 100644 newlib/libc/ssp/stpcpy_chk.c
create mode 100644 newlib/libc/ssp/stpncpy_chk.c
create mode 100644 newlib/libc/ssp/strcat_chk.c
create mode 100644 newlib/libc/ssp/strcpy_chk.c
create mode 100644 newlib/libc/ssp/strncat_chk.c
create mode 100644 newlib/libc/ssp/strncpy_chk.c
create mode 100644 newlib/libc/ssp/vsnprintf_chk.c
create mode 100644 newlib/libc/ssp/vsprintf_chk.c
--
2.14.3
^ permalink raw reply [flat|nested] 13+ messages in thread
* [PATCH v1 01/10] ssp: add APIs for Stack Smashing Protection (-fstack-protector*)
2017-11-01 4:53 [PATCH v1 00/10] Add Stack Smashing Protection and Object Size Checking Yaakov Selkowitz
2017-11-01 4:53 ` [PATCH v1 10/10] cygwin: create libssp compatibility import library Yaakov Selkowitz
2017-11-01 4:53 ` [PATCH v1 03/10] ssp: add Object Size Checking for bcopy, bzero Yaakov Selkowitz
@ 2017-11-01 4:53 ` Yaakov Selkowitz
2017-11-01 4:53 ` [PATCH v1 02/10] ssp: add Object Size Checking for basic string functions Yaakov Selkowitz
` (7 subsequent siblings)
10 siblings, 0 replies; 13+ messages in thread
From: Yaakov Selkowitz @ 2017-11-01 4:53 UTC (permalink / raw)
To: newlib
Compiling with any of the -fstack-protector flags requires the
__stack_chk_guard data import (which needs to be initialized) and the
__stack_chk_fail{,_local} functions. While GCC's own libssp can provide
these, it is better that we provide these ourselves. The header is from
NetBSD but the implementation is custom due to NetBSD's implementation
being OS-specific.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
---
newlib/libc/include/ssp/ssp.h | 93 +++++++++++++++++++++++++++++++++++++++
newlib/libc/ssp/stack_protector.c | 46 +++++++++++++++++++
2 files changed, 139 insertions(+)
create mode 100644 newlib/libc/include/ssp/ssp.h
create mode 100644 newlib/libc/ssp/stack_protector.c
diff --git a/newlib/libc/include/ssp/ssp.h b/newlib/libc/include/ssp/ssp.h
new file mode 100644
index 000000000..14409c1ec
--- /dev/null
+++ b/newlib/libc/include/ssp/ssp.h
@@ -0,0 +1,93 @@
+/* $NetBSD: ssp.h,v 1.13 2015/09/03 20:43:47 plunky Exp $ */
+
+/*-
+ * Copyright (c) 2006, 2011 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Christos Zoulas.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef _SSP_SSP_H_
+#define _SSP_SSP_H_
+
+#include <sys/cdefs.h>
+
+#ifndef __RENAME
+#define __RENAME(__f) __asm__(__ASMNAME (#__f))
+#endif
+
+#if !defined(__cplusplus)
+# if _FORTIFY_SOURCE > 0 && !defined(__lint__) && \
+ (__OPTIMIZE__ > 0 || defined(__clang__)) && __GNUC_PREREQ__(4, 1)
+# if _FORTIFY_SOURCE > 1
+# define __SSP_FORTIFY_LEVEL 2
+# else
+# define __SSP_FORTIFY_LEVEL 1
+# endif
+# else
+# define __SSP_FORTIFY_LEVEL 0
+# endif
+#else
+# define __SSP_FORTIFY_LEVEL 0
+#endif
+
+/* __ssp_real is used by the implementation in libc */
+#if __SSP_FORTIFY_LEVEL == 0
+#define __ssp_real_(fun) fun
+#else
+#define __ssp_real_(fun) __ssp_real_ ## fun
+#endif
+#define __ssp_real(fun) __ssp_real_(fun)
+
+#define __ssp_inline static __inline __attribute__((__always_inline__))
+
+#define __ssp_bos(ptr) __builtin_object_size(ptr, __SSP_FORTIFY_LEVEL > 1)
+#define __ssp_bos0(ptr) __builtin_object_size(ptr, 0)
+
+#define __ssp_check(buf, len, bos) \
+ if (bos(buf) != (size_t)-1 && len > bos(buf)) \
+ __chk_fail()
+#define __ssp_redirect_raw(rtype, fun, symbol, args, call, cond, bos) \
+rtype __ssp_real_(fun) args __RENAME(symbol); \
+__ssp_inline rtype fun args __RENAME(__ssp_protected_ ## fun); \
+__ssp_inline rtype fun args { \
+ if (cond) \
+ __ssp_check(__buf, __len, bos); \
+ return __ssp_real_(fun) call; \
+}
+
+#define __ssp_redirect(rtype, fun, args, call) \
+ __ssp_redirect_raw(rtype, fun, fun, args, call, 1, __ssp_bos)
+#define __ssp_redirect0(rtype, fun, args, call) \
+ __ssp_redirect_raw(rtype, fun, fun, args, call, 1, __ssp_bos0)
+
+#define __ssp_overlap(a, b, l) \
+ (((a) <= (b) && (b) < (a) + (l)) || ((b) <= (a) && (a) < (b) + (l)))
+
+__BEGIN_DECLS
+void __stack_chk_fail(void) __dead2;
+void __chk_fail(void) __dead2;
+__END_DECLS
+
+#endif /* _SSP_SSP_H_ */
diff --git a/newlib/libc/ssp/stack_protector.c b/newlib/libc/ssp/stack_protector.c
new file mode 100644
index 000000000..608f79753
--- /dev/null
+++ b/newlib/libc/ssp/stack_protector.c
@@ -0,0 +1,46 @@
+#include <sys/cdefs.h>
+#include <sys/param.h>
+#include <ssp/ssp.h>
+#include <signal.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+uintptr_t __stack_chk_guard = 0;
+
+void
+__attribute__((__constructor__))
+__stack_chk_init (void)
+{
+ if (__stack_chk_guard != 0)
+ return;
+
+#if defined(__CYGWIN__) || defined(__rtems__)
+ arc4random_buf(&__stack_chk_guard, sizeof(__stack_chk_guard));
+#else
+ /* If getentropy is not available, use the "terminator canary". */
+ ((unsigned char *)&__stack_chk_guard)[0] = 0;
+ ((unsigned char *)&__stack_chk_guard)[1] = 0;
+ ((unsigned char *)&__stack_chk_guard)[2] = '\n';
+ ((unsigned char *)&__stack_chk_guard)[3] = 255;
+#endif
+}
+
+void
+__attribute__((__noreturn__))
+__stack_chk_fail (void)
+{
+ char msg[] = "*** stack smashing detected ***: terminated\n";
+ write (2, msg, strlen (msg));
+ raise (SIGABRT);
+ _exit (127);
+}
+
+#ifdef __ELF__
+void
+__attribute__((visibility ("hidden")))
+__stack_chk_fail_local(void)
+{
+ __stack_chk_fail();
+}
+#endif
--
2.14.3
^ permalink raw reply [flat|nested] 13+ messages in thread
* [PATCH v1 02/10] ssp: add Object Size Checking for basic string functions
2017-11-01 4:53 [PATCH v1 00/10] Add Stack Smashing Protection and Object Size Checking Yaakov Selkowitz
` (2 preceding siblings ...)
2017-11-01 4:53 ` [PATCH v1 01/10] ssp: add APIs for Stack Smashing Protection (-fstack-protector*) Yaakov Selkowitz
@ 2017-11-01 4:53 ` Yaakov Selkowitz
2017-11-01 4:53 ` [PATCH v1 05/10] ssp: add Object Size Checking for basic unistd.h functions Yaakov Selkowitz
` (6 subsequent siblings)
10 siblings, 0 replies; 13+ messages in thread
From: Yaakov Selkowitz @ 2017-11-01 4:53 UTC (permalink / raw)
To: newlib
The Object Size Checking (-D_FORTIFY_SOURCE=*) functionality provides
wrappers around functions suspectible to buffer overflows. While
independent from Stack Smashing Protection (-fstack-protector*), they
are often used and implemented together.
While GCC also provides an implementation in libssp, it is completely
broken (CVE-2016-4973, RHBZ#1324759) and seemingly unfixable, as there
is no reliable way for a preprocessor macro to trigger a link flag.
Therefore, adding this here is necessary to make it work.
Note that this does require building gcc with --disable-libssp and
gcc_cv_libc_provides_ssp=yes.
The implementation is from NetBSD, with the addition of mempcpy (a GNU
extension) for parity with libssp.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
---
newlib/libc/include/ssp/string.h | 112 +++++++++++++++++++++++++++++++++++++++
newlib/libc/include/string.h | 4 ++
newlib/libc/ssp/chk_fail.c | 13 +++++
newlib/libc/ssp/memcpy_chk.c | 54 +++++++++++++++++++
newlib/libc/ssp/memmove_chk.c | 50 +++++++++++++++++
newlib/libc/ssp/mempcpy_chk.c | 21 ++++++++
newlib/libc/ssp/memset_chk.c | 49 +++++++++++++++++
newlib/libc/ssp/stpcpy_chk.c | 58 ++++++++++++++++++++
newlib/libc/ssp/stpncpy_chk.c | 56 ++++++++++++++++++++
newlib/libc/ssp/strcat_chk.c | 62 ++++++++++++++++++++++
newlib/libc/ssp/strcpy_chk.c | 55 +++++++++++++++++++
newlib/libc/ssp/strncat_chk.c | 73 +++++++++++++++++++++++++
newlib/libc/ssp/strncpy_chk.c | 55 +++++++++++++++++++
13 files changed, 662 insertions(+)
create mode 100644 newlib/libc/include/ssp/string.h
create mode 100644 newlib/libc/ssp/chk_fail.c
create mode 100644 newlib/libc/ssp/memcpy_chk.c
create mode 100644 newlib/libc/ssp/memmove_chk.c
create mode 100644 newlib/libc/ssp/mempcpy_chk.c
create mode 100644 newlib/libc/ssp/memset_chk.c
create mode 100644 newlib/libc/ssp/stpcpy_chk.c
create mode 100644 newlib/libc/ssp/stpncpy_chk.c
create mode 100644 newlib/libc/ssp/strcat_chk.c
create mode 100644 newlib/libc/ssp/strcpy_chk.c
create mode 100644 newlib/libc/ssp/strncat_chk.c
create mode 100644 newlib/libc/ssp/strncpy_chk.c
diff --git a/newlib/libc/include/ssp/string.h b/newlib/libc/include/ssp/string.h
new file mode 100644
index 000000000..4c5198fd1
--- /dev/null
+++ b/newlib/libc/include/ssp/string.h
@@ -0,0 +1,112 @@
+/* $NetBSD: string.h,v 1.13 2014/11/29 13:23:48 pooka Exp $ */
+
+/*-
+ * Copyright (c) 2006 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Christos Zoulas.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef _SSP_STRING_H_
+#define _SSP_STRING_H_
+
+#include <sys/cdefs.h>
+#include <ssp/ssp.h>
+
+__BEGIN_DECLS
+void *__memcpy_chk(void *, const void *, size_t, size_t);
+void *__memmove_chk(void *, void *, size_t, size_t);
+void *__memset_chk(void *, int, size_t, size_t);
+char *__stpcpy_chk(char *, const char *, size_t);
+char *__strcat_chk(char *, const char *, size_t);
+char *__strcpy_chk(char *, const char *, size_t);
+char *__strncat_chk(char *, const char *, size_t, size_t);
+char *__strncpy_chk(char *, const char *, size_t, size_t);
+__END_DECLS
+
+#if __SSP_FORTIFY_LEVEL > 0
+
+#define __ssp_bos_check3(fun, dst, src, len) \
+ ((__ssp_bos0(dst) != (size_t)-1) ? \
+ __builtin___ ## fun ## _chk(dst, src, len, __ssp_bos0(dst)) : \
+ __ ## fun ## _ichk(dst, src, len))
+
+#define __ssp_bos_check2(fun, dst, src) \
+ ((__ssp_bos0(dst) != (size_t)-1) ? \
+ __builtin___ ## fun ## _chk(dst, src, __ssp_bos0(dst)) : \
+ __ ## fun ## _ichk(dst, src))
+
+#define __ssp_bos_icheck3_restrict(fun, type1, type2) \
+static __inline type1 __ ## fun ## _ichk(type1 __restrict, type2 __restrict, size_t); \
+static __inline __attribute__((__always_inline__)) type1 \
+__ ## fun ## _ichk(type1 __restrict dst, type2 __restrict src, size_t len) { \
+ return __builtin___ ## fun ## _chk(dst, src, len, __ssp_bos0(dst)); \
+}
+
+#define __ssp_bos_icheck3(fun, type1, type2) \
+static __inline type1 __ ## fun ## _ichk(type1, type2, size_t); \
+static __inline __attribute__((__always_inline__)) type1 \
+__ ## fun ## _ichk(type1 dst, type2 src, size_t len) { \
+ return __builtin___ ## fun ## _chk(dst, src, len, __ssp_bos0(dst)); \
+}
+
+#define __ssp_bos_icheck2_restrict(fun, type1, type2) \
+static __inline type1 __ ## fun ## _ichk(type1, type2); \
+static __inline __attribute__((__always_inline__)) type1 \
+__ ## fun ## _ichk(type1 __restrict dst, type2 __restrict src) { \
+ return __builtin___ ## fun ## _chk(dst, src, __ssp_bos0(dst)); \
+}
+
+__BEGIN_DECLS
+__ssp_bos_icheck3_restrict(memcpy, void *, const void *)
+__ssp_bos_icheck3(memmove, void *, const void *)
+__ssp_bos_icheck3_restrict(mempcpy, void *, const void *)
+__ssp_bos_icheck3(memset, void *, int)
+__ssp_bos_icheck2_restrict(stpcpy, char *, const char *)
+#if __GNUC_PREREQ__(4,8) || defined(__clang__)
+__ssp_bos_icheck3_restrict(stpncpy, char *, const char *)
+#endif
+__ssp_bos_icheck2_restrict(strcpy, char *, const char *)
+__ssp_bos_icheck2_restrict(strcat, char *, const char *)
+__ssp_bos_icheck3_restrict(strncpy, char *, const char *)
+__ssp_bos_icheck3_restrict(strncat, char *, const char *)
+__END_DECLS
+
+#define memcpy(dst, src, len) __ssp_bos_check3(memcpy, dst, src, len)
+#define memmove(dst, src, len) __ssp_bos_check3(memmove, dst, src, len)
+#if __GNU_VISIBLE
+#define mempcpy(dst, src, len) __ssp_bos_check3(mempcpy, dst, src, len)
+#endif
+#define memset(dst, val, len) __ssp_bos_check3(memset, dst, val, len)
+#define stpcpy(dst, src) __ssp_bos_check2(stpcpy, dst, src)
+#if __GNUC_PREREQ__(4,8) || defined(__clang__)
+#define stpncpy(dst, src, len) __ssp_bos_check3(stpncpy, dst, src, len)
+#endif
+#define strcpy(dst, src) __ssp_bos_check2(strcpy, dst, src)
+#define strcat(dst, src) __ssp_bos_check2(strcat, dst, src)
+#define strncpy(dst, src, len) __ssp_bos_check3(strncpy, dst, src, len)
+#define strncat(dst, src, len) __ssp_bos_check3(strncat, dst, src, len)
+
+#endif /* __SSP_FORTIFY_LEVEL > 0 */
+#endif /* _SSP_STRING_H_ */
diff --git a/newlib/libc/include/string.h b/newlib/libc/include/string.h
index 9c536f35f..b5059295d 100644
--- a/newlib/libc/include/string.h
+++ b/newlib/libc/include/string.h
@@ -176,4 +176,8 @@ char *_EXFUN(__nonnull (1) basename,(const char *)) __asm__(__ASMNAME("__gnu_bas
_END_STD_C
+#if _FORTIFY_SOURCE > 0
+#include <ssp/string.h>
+#endif
+
#endif /* _STRING_H_ */
diff --git a/newlib/libc/ssp/chk_fail.c b/newlib/libc/ssp/chk_fail.c
new file mode 100644
index 000000000..b1f8e42a6
--- /dev/null
+++ b/newlib/libc/ssp/chk_fail.c
@@ -0,0 +1,13 @@
+#include <signal.h>
+#include <string.h>
+#include <unistd.h>
+
+void
+__attribute__((__noreturn__))
+__chk_fail(void)
+{
+ char msg[] = "*** buffer overflow detected ***: terminated\n";
+ write (2, msg, strlen (msg));
+ raise (SIGABRT);
+ _exit (127);
+}
diff --git a/newlib/libc/ssp/memcpy_chk.c b/newlib/libc/ssp/memcpy_chk.c
new file mode 100644
index 000000000..63f536dc5
--- /dev/null
+++ b/newlib/libc/ssp/memcpy_chk.c
@@ -0,0 +1,54 @@
+/* $NetBSD: memcpy_chk.c,v 1.7 2015/05/13 19:57:16 joerg Exp $ */
+
+/*-
+ * Copyright (c) 2006 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Christos Zoulas.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <sys/cdefs.h>
+__RCSID("$NetBSD: memcpy_chk.c,v 1.7 2015/05/13 19:57:16 joerg Exp $");
+
+/*LINTLIBRARY*/
+
+#include <ssp/ssp.h>
+#include <string.h>
+
+#undef memcpy
+
+void *__memcpy_chk(void * __restrict, const void * __restrict, size_t, size_t);
+
+void *
+__memcpy_chk(void * __restrict dst, const void * __restrict src, size_t len,
+ size_t slen)
+{
+ if (len > slen)
+ __chk_fail();
+
+ if (__ssp_overlap((const char *)src, (const char *)dst, len))
+ __chk_fail();
+
+ return memcpy(dst, src, len);
+}
diff --git a/newlib/libc/ssp/memmove_chk.c b/newlib/libc/ssp/memmove_chk.c
new file mode 100644
index 000000000..f8f03d778
--- /dev/null
+++ b/newlib/libc/ssp/memmove_chk.c
@@ -0,0 +1,50 @@
+/* $NetBSD: memmove_chk.c,v 1.5 2014/09/17 00:39:28 joerg Exp $ */
+
+/*-
+ * Copyright (c) 2006 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Christos Zoulas.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <sys/cdefs.h>
+__RCSID("$NetBSD: memmove_chk.c,v 1.5 2014/09/17 00:39:28 joerg Exp $");
+
+/*LINTLIBRARY*/
+
+#include <ssp/ssp.h>
+#include <string.h>
+
+#undef memmove
+
+void *__memmove_chk(void *, void *src, size_t, size_t);
+
+void *
+__memmove_chk(void *dst, void *src, size_t len,
+ size_t slen)
+{
+ if (len > slen)
+ __chk_fail();
+ return memmove(dst, src, len);
+}
diff --git a/newlib/libc/ssp/mempcpy_chk.c b/newlib/libc/ssp/mempcpy_chk.c
new file mode 100644
index 000000000..fc2ccf894
--- /dev/null
+++ b/newlib/libc/ssp/mempcpy_chk.c
@@ -0,0 +1,21 @@
+#define _GNU_SOURCE
+#include <sys/cdefs.h>
+#include <ssp/ssp.h>
+#include <string.h>
+
+#undef mempcpy
+
+void *__mempcpy_chk(void * __restrict, const void * __restrict, size_t, size_t);
+
+void *
+__mempcpy_chk(void * __restrict dst, const void * __restrict src, size_t len,
+ size_t slen)
+{
+ if (len > slen)
+ __chk_fail();
+
+ if (__ssp_overlap((const char *)src, (const char *)dst, len))
+ __chk_fail();
+
+ return mempcpy(dst, src, len);
+}
diff --git a/newlib/libc/ssp/memset_chk.c b/newlib/libc/ssp/memset_chk.c
new file mode 100644
index 000000000..0e303b9eb
--- /dev/null
+++ b/newlib/libc/ssp/memset_chk.c
@@ -0,0 +1,49 @@
+/* $NetBSD: memset_chk.c,v 1.5 2014/09/17 00:39:28 joerg Exp $ */
+
+/*-
+ * Copyright (c) 2006 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Christos Zoulas.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <sys/cdefs.h>
+__RCSID("$NetBSD: memset_chk.c,v 1.5 2014/09/17 00:39:28 joerg Exp $");
+
+/*LINTLIBRARY*/
+
+#include <ssp/ssp.h>
+#include <string.h>
+
+#undef memset
+
+void *__memset_chk(void * __restrict, int, size_t, size_t);
+
+void *
+__memset_chk(void * __restrict dst, int val, size_t len, size_t slen)
+{
+ if (len > slen)
+ __chk_fail();
+ return memset(dst, val, len);
+}
diff --git a/newlib/libc/ssp/stpcpy_chk.c b/newlib/libc/ssp/stpcpy_chk.c
new file mode 100644
index 000000000..ed1d74ad7
--- /dev/null
+++ b/newlib/libc/ssp/stpcpy_chk.c
@@ -0,0 +1,58 @@
+/* $NetBSD: stpcpy_chk.c,v 1.6 2015/05/09 15:42:21 christos Exp $ */
+
+/*-
+ * Copyright (c) 2013 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Christos Zoulas.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <sys/cdefs.h>
+__RCSID("$NetBSD: stpcpy_chk.c,v 1.6 2015/05/09 15:42:21 christos Exp $");
+
+/*LINTLIBRARY*/
+
+#include <ssp/ssp.h>
+#include <string.h>
+
+#undef memcpy
+
+#if !__GNUC_PREREQ__(4, 8)
+char *__stpcpy_chk(char * __restrict, const char * __restrict, size_t);
+#endif
+
+char *
+__stpcpy_chk(char * __restrict dst, const char * __restrict src, size_t slen)
+{
+ size_t len = strlen(src);
+
+ if (len >= slen)
+ __chk_fail();
+
+ if (__ssp_overlap(src, dst, len))
+ __chk_fail();
+
+ (void)memcpy(dst, src, len + 1);
+ return dst + len;
+}
diff --git a/newlib/libc/ssp/stpncpy_chk.c b/newlib/libc/ssp/stpncpy_chk.c
new file mode 100644
index 000000000..756626153
--- /dev/null
+++ b/newlib/libc/ssp/stpncpy_chk.c
@@ -0,0 +1,56 @@
+/* $NetBSD: stpncpy_chk.c,v 1.3 2015/05/09 15:42:21 christos Exp $ */
+
+/*-
+ * Copyright (c) 2013 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Christos Zoulas.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <sys/cdefs.h>
+__RCSID("$NetBSD: stpncpy_chk.c,v 1.3 2015/05/09 15:42:21 christos Exp $");
+
+/*LINTLIBRARY*/
+
+#include <ssp/ssp.h>
+#include <string.h>
+
+#undef stpncpy
+
+#if !__GNUC_PREREQ__(4, 8)
+char *__stpncpy_chk(char * __restrict, const char * __restrict, size_t, size_t);
+#endif
+
+char *
+__stpncpy_chk(char * __restrict dst, const char * __restrict src, size_t len,
+ size_t slen)
+{
+ if (len > slen)
+ __chk_fail();
+
+ if (__ssp_overlap(src, dst, len))
+ __chk_fail();
+
+ return stpncpy(dst, src, len);
+}
diff --git a/newlib/libc/ssp/strcat_chk.c b/newlib/libc/ssp/strcat_chk.c
new file mode 100644
index 000000000..d57f9559b
--- /dev/null
+++ b/newlib/libc/ssp/strcat_chk.c
@@ -0,0 +1,62 @@
+/* $NetBSD: strcat_chk.c,v 1.5 2014/09/17 00:39:28 joerg Exp $ */
+
+/*-
+ * Copyright (c) 2006 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Christos Zoulas.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <sys/cdefs.h>
+__RCSID("$NetBSD: strcat_chk.c,v 1.5 2014/09/17 00:39:28 joerg Exp $");
+
+/*LINTLIBRARY*/
+
+#include <ssp/ssp.h>
+#include <string.h>
+
+char *__strcat_chk(char * __restrict, const char * __restrict, size_t);
+
+char *
+__strcat_chk(char * __restrict dst, const char * __restrict src, size_t slen)
+{
+ char *d;
+
+ for (d = dst; *d; d++) {
+ if (slen-- == 0)
+ __chk_fail();
+ }
+
+ while (*src) {
+ if (slen-- == 0)
+ __chk_fail();
+ *d++ = *src++;
+ }
+
+ if (slen-- == 0)
+ __chk_fail();
+
+ *d = '\0';
+ return dst;
+}
diff --git a/newlib/libc/ssp/strcpy_chk.c b/newlib/libc/ssp/strcpy_chk.c
new file mode 100644
index 000000000..cef160a62
--- /dev/null
+++ b/newlib/libc/ssp/strcpy_chk.c
@@ -0,0 +1,55 @@
+/* $NetBSD: strcpy_chk.c,v 1.8 2015/05/09 15:42:21 christos Exp $ */
+
+/*-
+ * Copyright (c) 2006 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Christos Zoulas.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <sys/cdefs.h>
+__RCSID("$NetBSD: strcpy_chk.c,v 1.8 2015/05/09 15:42:21 christos Exp $");
+
+/*LINTLIBRARY*/
+
+#include <ssp/ssp.h>
+#include <string.h>
+
+#undef memcpy
+
+char *__strcpy_chk(char * __restrict, const char * __restrict, size_t);
+
+char *
+__strcpy_chk(char * __restrict dst, const char * __restrict src, size_t slen)
+{
+ size_t len = strlen(src) + 1;
+
+ if (len > slen)
+ __chk_fail();
+
+ if (__ssp_overlap(src, dst, len))
+ __chk_fail();
+
+ return memcpy(dst, src, len);
+}
diff --git a/newlib/libc/ssp/strncat_chk.c b/newlib/libc/ssp/strncat_chk.c
new file mode 100644
index 000000000..5ce5a9ef6
--- /dev/null
+++ b/newlib/libc/ssp/strncat_chk.c
@@ -0,0 +1,73 @@
+/* $NetBSD: strncat_chk.c,v 1.5 2014/09/17 00:39:28 joerg Exp $ */
+
+/*-
+ * Copyright (c) 2006 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Christos Zoulas.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <sys/cdefs.h>
+__RCSID("$NetBSD: strncat_chk.c,v 1.5 2014/09/17 00:39:28 joerg Exp $");
+
+/*LINTLIBRARY*/
+
+#include <ssp/ssp.h>
+#include <string.h>
+#include <stdio.h>
+
+char *__strncat_chk(char * __restrict, const char * __restrict, size_t,
+ size_t);
+
+char *
+__strncat_chk(char * __restrict dst, const char * __restrict src, size_t len,
+ size_t slen)
+{
+ char *d;
+
+ if (len == 0)
+ return dst;
+
+ if (len > slen)
+ __chk_fail();
+
+ for (d = dst; *d; d++) {
+ if (slen-- == 0)
+ __chk_fail();
+ }
+
+ do {
+ if ((*d = *src++) == '\0')
+ break;
+ if (slen-- == 0)
+ __chk_fail();
+ d++;
+ } while (--len != 0);
+
+ if (slen-- == 0)
+ __chk_fail();
+
+ *d = '\0';
+ return dst;
+}
diff --git a/newlib/libc/ssp/strncpy_chk.c b/newlib/libc/ssp/strncpy_chk.c
new file mode 100644
index 000000000..591157a25
--- /dev/null
+++ b/newlib/libc/ssp/strncpy_chk.c
@@ -0,0 +1,55 @@
+/* $NetBSD: strncpy_chk.c,v 1.6 2015/05/09 15:42:21 christos Exp $ */
+
+/*-
+ * Copyright (c) 2006 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Christos Zoulas.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <sys/cdefs.h>
+__RCSID("$NetBSD: strncpy_chk.c,v 1.6 2015/05/09 15:42:21 christos Exp $");
+
+/*LINTLIBRARY*/
+
+#include <ssp/ssp.h>
+#include <string.h>
+
+#undef strncpy
+
+char *__strncpy_chk(char * __restrict, const char * __restrict, size_t,
+ size_t);
+
+char *
+__strncpy_chk(char * __restrict dst, const char * __restrict src, size_t len,
+ size_t slen)
+{
+ if (len > slen)
+ __chk_fail();
+
+ if (__ssp_overlap(src, dst, len))
+ __chk_fail();
+
+ return strncpy(dst, src, len);
+}
--
2.14.3
^ permalink raw reply [flat|nested] 13+ messages in thread
* [PATCH v1 08/10] ssp: install headers
2017-11-01 4:53 [PATCH v1 00/10] Add Stack Smashing Protection and Object Size Checking Yaakov Selkowitz
` (5 preceding siblings ...)
2017-11-01 4:53 ` [PATCH v1 06/10] ssp: document _FORTIFY_SOURCE with the feature test macros Yaakov Selkowitz
@ 2017-11-01 4:58 ` Yaakov Selkowitz
2017-11-01 5:04 ` [PATCH v1 09/10] cygwin: export SSP functions Yaakov Selkowitz
` (3 subsequent siblings)
10 siblings, 0 replies; 13+ messages in thread
From: Yaakov Selkowitz @ 2017-11-01 4:58 UTC (permalink / raw)
To: newlib
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
---
newlib/Makefile.am | 4 ++++
newlib/Makefile.in | 4 ++++
2 files changed, 8 insertions(+)
diff --git a/newlib/Makefile.am b/newlib/Makefile.am
index effa2adba..205705d88 100644
--- a/newlib/Makefile.am
+++ b/newlib/Makefile.am
@@ -324,6 +324,10 @@ endif
for i in $(srcdir)/libc/include/rpc/*.h; do \
$(INSTALL_DATA) $$i $(DESTDIR)$(tooldir)/include/rpc/`basename $$i`; \
done; \
+ $(mkinstalldirs) $(DESTDIR)$(tooldir)/include/ssp; \
+ for i in $(srcdir)/libc/include/ssp/*.h; do \
+ $(INSTALL_DATA) $$i $(DESTDIR)$(tooldir)/include/ssp/`basename $$i`; \
+ done; \
$(mkinstalldirs) $(DESTDIR)$(tooldir)/include/sys; \
for i in $(srcdir)/libc/include/sys/*.h; do \
$(INSTALL_DATA) $$i $(DESTDIR)$(tooldir)/include/sys/`basename $$i`; \
diff --git a/newlib/Makefile.in b/newlib/Makefile.in
index 7756e7066..3b35251a7 100644
--- a/newlib/Makefile.in
+++ b/newlib/Makefile.in
@@ -1071,6 +1071,10 @@ install-data-local: install-toollibLIBRARIES
for i in $(srcdir)/libc/include/rpc/*.h; do \
$(INSTALL_DATA) $$i $(DESTDIR)$(tooldir)/include/rpc/`basename $$i`; \
done; \
+ $(mkinstalldirs) $(DESTDIR)$(tooldir)/include/ssp; \
+ for i in $(srcdir)/libc/include/ssp/*.h; do \
+ $(INSTALL_DATA) $$i $(DESTDIR)$(tooldir)/include/ssp/`basename $$i`; \
+ done; \
$(mkinstalldirs) $(DESTDIR)$(tooldir)/include/sys; \
for i in $(srcdir)/libc/include/sys/*.h; do \
$(INSTALL_DATA) $$i $(DESTDIR)$(tooldir)/include/sys/`basename $$i`; \
--
2.14.3
^ permalink raw reply [flat|nested] 13+ messages in thread
* [PATCH v1 09/10] cygwin: export SSP functions
2017-11-01 4:53 [PATCH v1 00/10] Add Stack Smashing Protection and Object Size Checking Yaakov Selkowitz
` (6 preceding siblings ...)
2017-11-01 4:58 ` [PATCH v1 08/10] ssp: install headers Yaakov Selkowitz
@ 2017-11-01 5:04 ` Yaakov Selkowitz
2017-11-01 5:05 ` [PATCH v1 07/10] ssp: add build infrastructure Yaakov Selkowitz
` (2 subsequent siblings)
10 siblings, 0 replies; 13+ messages in thread
From: Yaakov Selkowitz @ 2017-11-01 5:04 UTC (permalink / raw)
To: newlib
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
---
winsup/cygwin/common.din | 20 ++++++++++++++++++++
winsup/cygwin/include/cygwin/version.h | 7 ++++++-
2 files changed, 26 insertions(+), 1 deletion(-)
diff --git a/winsup/cygwin/common.din b/winsup/cygwin/common.din
index 55fa9b16c..25ea607f9 100644
--- a/winsup/cygwin/common.din
+++ b/winsup/cygwin/common.din
@@ -7,6 +7,7 @@ __cygwin_user_data DATA
__mb_cur_max DATA
__progname DATA
__rcmd_errstr DATA
+__stack_chk_guard DATA
_check_for_executable DATA
_ctype_ DATA
_daylight DATA
@@ -42,6 +43,7 @@ __assertfail NOSIGFE
__b64_ntop NOSIGFE
__b64_pton NOSIGFE
__bsd_qsort_r NOSIGFE
+__chk_fail SIGFE
__cxa_atexit = cygwin__cxa_atexit SIGFE
__cxa_finalize SIGFE
__dn_comp SIGFE
@@ -50,6 +52,7 @@ __dn_skipname SIGFE
__eprintf SIGFE
__errno NOSIGFE
__fbufsize NOSIGFE
+__fgets_chk SIGFE
__flbf NOSIGFE
__fpclassifyd NOSIGFE
__fpclassifyf NOSIGFE
@@ -62,6 +65,7 @@ __fwritable NOSIGFE
__fwriting NOSIGFE
__getpagesize = getpagesize SIGFE
__getreent NOSIGFE
+__gets_chk SIGFE
__gnu_basename NOSIGFE
__infinity NOSIGFE
__isinfd = isinf NOSIGFE
@@ -72,7 +76,11 @@ __locale_ctype_ptr NOSIGFE
__locale_ctype_ptr_l NOSIGFE
__locale_mb_cur_max NOSIGFE
__main NOSIGFE
+__memcpy_chk NOSIGFE
+__memmove_chk NOSIGFE
__mempcpy = mempcpy NOSIGFE
+__mempcpy_chk NOSIGFE
+__memset_chk NOSIGFE
__opendir_with_d_ino SIGFE
__res_close SIGFE
__res_init SIGFE
@@ -92,10 +100,22 @@ __res_state SIGFE
__signbitd NOSIGFE
__signbitf NOSIGFE
__signgam NOSIGFE
+__snprintf_chk SIGFE
+__sprintf_chk SIGFE
__srget SIGFE
__srget_r SIGFE
+__stack_chk_fail SIGFE
+__stack_chk_fail_local = __stack_chk_fail SIGFE
+__stpcpy_chk NOSIGFE
+__stpncpy_chk NOSIGFE
+__strcat_chk NOSIGFE
+__strcpy_chk NOSIGFE
+__strncat_chk NOSIGFE
+__strncpy_chk NOSIGFE
__swbuf SIGFE
__swbuf_r SIGFE
+__vsnprintf_chk SIGFE
+__vsprintf_chk SIGFE
__wrap__ZdaPv NOSIGFE # void operator delete[](void *p) throw()
__wrap__ZdaPvRKSt9nothrow_t NOSIGFE # void operator delete[](void *p, const std::nothrow_t &nt) throw()
__wrap__ZdlPv NOSIGFE # void operator delete(void *p) throw()
diff --git a/winsup/cygwin/include/cygwin/version.h b/winsup/cygwin/include/cygwin/version.h
index 7b95de3ee..8844486ac 100644
--- a/winsup/cygwin/include/cygwin/version.h
+++ b/winsup/cygwin/include/cygwin/version.h
@@ -483,12 +483,17 @@ details. */
316: Export pthread_rwlock_timedrdlock, pthread_rwlock_timedwrlock.
317: Export renameat2.
318: Export strnstr.
+ 319: Export __chk_fail, __fgets_chk, __gets_chk, __memcpy_chk, __memmove_chk,
+ __mempcpy_chk, __memset_chk, __snprintf_chk, __sprintf_chk,
+ __stack_chk_fail, __stack_chk_guard, __stpcpy_chk, __stpncpy_chk,
+ __strcat_chk, __strcpy_chk, __strncat_chk, __strncpy_chk,
+ __vsnprintf_chk, __vsprintf_chk.
Note that we forgot to bump the api for ualarm, strtoll, strtoull,
sigaltstack, sethostname. */
#define CYGWIN_VERSION_API_MAJOR 0
-#define CYGWIN_VERSION_API_MINOR 318
+#define CYGWIN_VERSION_API_MINOR 319
/* There is also a compatibity version number associated with the shared memory
regions. It is incremented when incompatible changes are made to the shared
--
2.14.3
^ permalink raw reply [flat|nested] 13+ messages in thread
* [PATCH v1 07/10] ssp: add build infrastructure
2017-11-01 4:53 [PATCH v1 00/10] Add Stack Smashing Protection and Object Size Checking Yaakov Selkowitz
` (7 preceding siblings ...)
2017-11-01 5:04 ` [PATCH v1 09/10] cygwin: export SSP functions Yaakov Selkowitz
@ 2017-11-01 5:05 ` Yaakov Selkowitz
2017-11-02 8:28 ` [PATCH v1 04/10] ssp: add Object Size Checking for basic stdio functions Yaakov Selkowitz
2017-11-02 14:28 ` [PATCH v1 00/10] Add Stack Smashing Protection and Object Size Checking Corinna Vinschen
10 siblings, 0 replies; 13+ messages in thread
From: Yaakov Selkowitz @ 2017-11-01 5:05 UTC (permalink / raw)
To: newlib
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
---
newlib/libc/Makefile.am | 4 +-
newlib/libc/Makefile.in | 15 +-
newlib/libc/configure | 3 +-
newlib/libc/configure.in | 2 +-
newlib/libc/ssp/Makefile.am | 71 +++++
newlib/libc/ssp/Makefile.in | 714 ++++++++++++++++++++++++++++++++++++++++++++
6 files changed, 800 insertions(+), 9 deletions(-)
create mode 100644 newlib/libc/ssp/Makefile.am
create mode 100644 newlib/libc/ssp/Makefile.in
diff --git a/newlib/libc/Makefile.am b/newlib/libc/Makefile.am
index 6e97bca52..e27ff5cf1 100644
--- a/newlib/libc/Makefile.am
+++ b/newlib/libc/Makefile.am
@@ -42,7 +42,7 @@ endif
# Do not change the order without considering the doc impact.
SUBDIRS = argz stdlib ctype search $(STDIO_SUBDIR) $(STDIO64_SUBDIR) string $(SIGNAL_SUBDIR) time locale sys reent \
$(extra_dir) errno misc machine $(UNIX_SUBDIR) $(POSIX_SUBDIR) $(SYSCALLS_SUBDIR) $(NEWLIB_ICONV_DIRS) \
- $(XDR_SUBDIR) .
+ $(XDR_SUBDIR) ssp .
noinst_DATA = $(CRT0)
@@ -64,6 +64,7 @@ SUBLIBS = \
$(LIBC_EXTRA_LIB) \
errno/liberrno.$(aext) \
misc/libmisc.$(aext) \
+ ssp/libssp.$(aext) \
$(LIBC_UNIX_LIB) \
$(LIBC_POSIX_LIB) \
$(LIBC_SYSCALL_LIB) \
@@ -87,6 +88,7 @@ SUBLIBS = \
$(LIBC_EXTRA_LIB) \
errno/lib.$(aext) \
misc/lib.$(aext) \
+ ssp/lib.$(aext) \
$(LIBC_UNIX_LIB) \
$(LIBC_POSIX_LIB) \
$(LIBC_SYSCALL_LIB) \
diff --git a/newlib/libc/Makefile.in b/newlib/libc/Makefile.in
index a597c1d92..c3de3f600 100644
--- a/newlib/libc/Makefile.in
+++ b/newlib/libc/Makefile.in
@@ -90,9 +90,10 @@ am__DEPENDENCIES_1 =
@USE_LIBTOOL_FALSE@ time/lib.$(aext) locale/lib.$(aext) \
@USE_LIBTOOL_FALSE@ reent/lib.$(aext) $(am__DEPENDENCIES_1) \
@USE_LIBTOOL_FALSE@ errno/lib.$(aext) misc/lib.$(aext) \
+@USE_LIBTOOL_FALSE@ ssp/lib.$(aext) $(am__DEPENDENCIES_1) \
@USE_LIBTOOL_FALSE@ $(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1) \
-@USE_LIBTOOL_FALSE@ $(am__DEPENDENCIES_1) $(am__DEPENDENCIES_2) \
-@USE_LIBTOOL_FALSE@ $(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1)
+@USE_LIBTOOL_FALSE@ $(am__DEPENDENCIES_2) $(am__DEPENDENCIES_1) \
+@USE_LIBTOOL_FALSE@ $(am__DEPENDENCIES_1)
@USE_LIBTOOL_TRUE@am__DEPENDENCIES_3 = argz/libargz.$(aext) \
@USE_LIBTOOL_TRUE@ stdlib/libstdlib.$(aext) \
@USE_LIBTOOL_TRUE@ ctype/libctype.$(aext) \
@@ -104,9 +105,9 @@ am__DEPENDENCIES_1 =
@USE_LIBTOOL_TRUE@ locale/liblocale.$(aext) \
@USE_LIBTOOL_TRUE@ reent/libreent.$(aext) $(am__DEPENDENCIES_1) \
@USE_LIBTOOL_TRUE@ errno/liberrno.$(aext) misc/libmisc.$(aext) \
+@USE_LIBTOOL_TRUE@ ssp/libssp.$(aext) $(am__DEPENDENCIES_1) \
@USE_LIBTOOL_TRUE@ $(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1) \
-@USE_LIBTOOL_TRUE@ $(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1) \
-@USE_LIBTOOL_TRUE@ $(am__DEPENDENCIES_1)
+@USE_LIBTOOL_TRUE@ $(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1)
am_libc_la_OBJECTS =
libc_la_OBJECTS = $(am_libc_la_OBJECTS)
libc_la_LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
@@ -191,7 +192,7 @@ ETAGS = etags
CTAGS = ctags
DIST_SUBDIRS = argz stdlib ctype search stdio stdio64 string signal \
time locale sys reent @extra_dir@ errno misc machine unix \
- posix syscalls iconv xdr .
+ posix syscalls iconv xdr ssp .
ACLOCAL = @ACLOCAL@
AMTAR = @AMTAR@
AR = @AR@
@@ -353,7 +354,7 @@ AUTOMAKE_OPTIONS = cygnus
# Do not change the order without considering the doc impact.
SUBDIRS = argz stdlib ctype search $(STDIO_SUBDIR) $(STDIO64_SUBDIR) string $(SIGNAL_SUBDIR) time locale sys reent \
$(extra_dir) errno misc machine $(UNIX_SUBDIR) $(POSIX_SUBDIR) $(SYSCALLS_SUBDIR) $(NEWLIB_ICONV_DIRS) \
- $(XDR_SUBDIR) .
+ $(XDR_SUBDIR) ssp .
noinst_DATA = $(CRT0)
@USE_LIBTOOL_TRUE@noinst_LTLIBRARIES = libc.la
@@ -373,6 +374,7 @@ noinst_DATA = $(CRT0)
@USE_LIBTOOL_FALSE@ $(LIBC_EXTRA_LIB) \
@USE_LIBTOOL_FALSE@ errno/lib.$(aext) \
@USE_LIBTOOL_FALSE@ misc/lib.$(aext) \
+@USE_LIBTOOL_FALSE@ ssp/lib.$(aext) \
@USE_LIBTOOL_FALSE@ $(LIBC_UNIX_LIB) \
@USE_LIBTOOL_FALSE@ $(LIBC_POSIX_LIB) \
@USE_LIBTOOL_FALSE@ $(LIBC_SYSCALL_LIB) \
@@ -396,6 +398,7 @@ noinst_DATA = $(CRT0)
@USE_LIBTOOL_TRUE@ $(LIBC_EXTRA_LIB) \
@USE_LIBTOOL_TRUE@ errno/liberrno.$(aext) \
@USE_LIBTOOL_TRUE@ misc/libmisc.$(aext) \
+@USE_LIBTOOL_TRUE@ ssp/libssp.$(aext) \
@USE_LIBTOOL_TRUE@ $(LIBC_UNIX_LIB) \
@USE_LIBTOOL_TRUE@ $(LIBC_POSIX_LIB) \
@USE_LIBTOOL_TRUE@ $(LIBC_SYSCALL_LIB) \
diff --git a/newlib/libc/configure b/newlib/libc/configure
index dabe44fd9..240c384d3 100755
--- a/newlib/libc/configure
+++ b/newlib/libc/configure
@@ -12121,7 +12121,7 @@ fi
-ac_config_files="$ac_config_files Makefile argz/Makefile ctype/Makefile errno/Makefile locale/Makefile misc/Makefile reent/Makefile search/Makefile stdio/Makefile stdio64/Makefile stdlib/Makefile string/Makefile time/Makefile posix/Makefile signal/Makefile syscalls/Makefile unix/Makefile iconv/Makefile iconv/ces/Makefile iconv/ccs/Makefile iconv/ccs/binary/Makefile iconv/lib/Makefile xdr/Makefile"
+ac_config_files="$ac_config_files Makefile argz/Makefile ctype/Makefile errno/Makefile locale/Makefile misc/Makefile reent/Makefile search/Makefile stdio/Makefile stdio64/Makefile stdlib/Makefile string/Makefile time/Makefile posix/Makefile signal/Makefile syscalls/Makefile unix/Makefile iconv/Makefile iconv/ces/Makefile iconv/ccs/Makefile iconv/ccs/binary/Makefile iconv/lib/Makefile ssp/Makefile xdr/Makefile"
cat >confcache <<\_ACEOF
# This file is a shell script that caches the results of configure
@@ -13240,6 +13240,7 @@ do
"iconv/ccs/Makefile") CONFIG_FILES="$CONFIG_FILES iconv/ccs/Makefile" ;;
"iconv/ccs/binary/Makefile") CONFIG_FILES="$CONFIG_FILES iconv/ccs/binary/Makefile" ;;
"iconv/lib/Makefile") CONFIG_FILES="$CONFIG_FILES iconv/lib/Makefile" ;;
+ "ssp/Makefile") CONFIG_FILES="$CONFIG_FILES ssp/Makefile" ;;
"xdr/Makefile") CONFIG_FILES="$CONFIG_FILES xdr/Makefile" ;;
*) as_fn_error $? "invalid argument: \`$ac_config_target'" "$LINENO" 5;;
diff --git a/newlib/libc/configure.in b/newlib/libc/configure.in
index ac25a3933..d3b10a500 100644
--- a/newlib/libc/configure.in
+++ b/newlib/libc/configure.in
@@ -219,5 +219,5 @@ fi
AC_SUBST(LIBC_MACHINE_LIB)
AC_SUBST(machine_dir)
-AC_CONFIG_FILES([Makefile argz/Makefile ctype/Makefile errno/Makefile locale/Makefile misc/Makefile reent/Makefile search/Makefile stdio/Makefile stdio64/Makefile stdlib/Makefile string/Makefile time/Makefile posix/Makefile signal/Makefile syscalls/Makefile unix/Makefile iconv/Makefile iconv/ces/Makefile iconv/ccs/Makefile iconv/ccs/binary/Makefile iconv/lib/Makefile xdr/Makefile])
+AC_CONFIG_FILES([Makefile argz/Makefile ctype/Makefile errno/Makefile locale/Makefile misc/Makefile reent/Makefile search/Makefile stdio/Makefile stdio64/Makefile stdlib/Makefile string/Makefile time/Makefile posix/Makefile signal/Makefile syscalls/Makefile unix/Makefile iconv/Makefile iconv/ces/Makefile iconv/ccs/Makefile iconv/ccs/binary/Makefile iconv/lib/Makefile ssp/Makefile xdr/Makefile])
AC_OUTPUT
diff --git a/newlib/libc/ssp/Makefile.am b/newlib/libc/ssp/Makefile.am
new file mode 100644
index 000000000..062a0fff2
--- /dev/null
+++ b/newlib/libc/ssp/Makefile.am
@@ -0,0 +1,71 @@
+## Process this file with automake to generate Makefile.in
+
+AUTOMAKE_OPTIONS = cygnus
+
+INCLUDES = $(NEWLIB_CFLAGS) $(CROSS_CFLAGS) $(TARGET_CFLAGS)
+
+GENERAL_SOURCES = \
+ chk_fail.c \
+ stack_protector.c
+
+STRING_SOURCES = \
+ memcpy_chk.c \
+ memmove_chk.c \
+ mempcpy_chk.c \
+ memset_chk.c \
+ stpcpy_chk.c \
+ stpncpy_chk.c \
+ strcat_chk.c \
+ strcpy_chk.c \
+ strncat_chk.c \
+ strncpy_chk.c
+
+STDIO_SOURCES = \
+ fgets_chk.c \
+ gets_chk.c \
+ snprintf_chk.c \
+ sprintf_chk.c \
+ vsnprintf_chk.c \
+ vsprintf_chk.c
+
+## None of these functions are specified by EL/IX
+if ELIX_LEVEL_1
+ELIX_SOURCES =
+else
+if ELIX_LEVEL_2
+ELIX_SOURCES =
+else
+if ELIX_LEVEL_3
+ELIX_SOURCES =
+else
+if ELIX_LEVEL_4
+ELIX_SOURCES =
+else
+if HAVE_STDIO_DIR
+ELIX_SOURCES = $(GENERAL_SOURCES) $(STRING_SOURCES) $(STDIO_SOURCES)
+else
+ELIX_SOURCES = $(GENERAL_SOURCES) $(STRING_SOURCES)
+endif
+endif
+endif
+endif
+endif
+
+libssp_la_LDFLAGS = -Xcompiler -nostdlib
+
+if USE_LIBTOOL
+noinst_LTLIBRARIES = libssp.la
+libssp_la_SOURCES = $(ELIX_SOURCES)
+noinst_DATA = objectlist.awk.in
+else
+noinst_LIBRARIES = lib.a
+lib_a_SOURCES = $(ELIX_SOURCES)
+lib_a_CFLAGS = $(AM_CFLAGS)
+noinst_DATA =
+endif # USE_LIBTOOL
+
+CHEWOUT_FILES =
+CHAPTERS =
+# No doc for ssp.
+
+include $(srcdir)/../../Makefile.shared
diff --git a/newlib/libc/ssp/Makefile.in b/newlib/libc/ssp/Makefile.in
new file mode 100644
index 000000000..c2e0c7717
--- /dev/null
+++ b/newlib/libc/ssp/Makefile.in
@@ -0,0 +1,714 @@
+# Makefile.in generated by automake 1.11.6 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
+# 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software
+# Foundation, Inc.
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+
+
+VPATH = @srcdir@
+am__make_dryrun = \
+ { \
+ am__dry=no; \
+ case $$MAKEFLAGS in \
+ *\\[\ \ ]*) \
+ echo 'am--echo: ; @echo "AM" OK' | $(MAKE) -f - 2>/dev/null \
+ | grep '^AM OK$$' >/dev/null || am__dry=yes;; \
+ *) \
+ for am__flg in $$MAKEFLAGS; do \
+ case $$am__flg in \
+ *=*|--*) ;; \
+ *n*) am__dry=yes; break;; \
+ esac; \
+ done;; \
+ esac; \
+ test $$am__dry = yes; \
+ }
+pkgdatadir = $(datadir)/@PACKAGE@
+pkgincludedir = $(includedir)/@PACKAGE@
+pkglibdir = $(libdir)/@PACKAGE@
+pkglibexecdir = $(libexecdir)/@PACKAGE@
+am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
+install_sh_DATA = $(install_sh) -c -m 644
+install_sh_PROGRAM = $(install_sh) -c
+install_sh_SCRIPT = $(install_sh) -c
+INSTALL_HEADER = $(INSTALL_DATA)
+transform = $(program_transform_name)
+NORMAL_INSTALL = :
+PRE_INSTALL = :
+POST_INSTALL = :
+NORMAL_UNINSTALL = :
+PRE_UNINSTALL = :
+POST_UNINSTALL = :
+build_triplet = @build@
+host_triplet = @host@
+DIST_COMMON = $(srcdir)/../../Makefile.shared $(srcdir)/Makefile.in \
+ $(srcdir)/Makefile.am
+subdir = ssp
+ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
+am__aclocal_m4_deps = $(top_srcdir)/../../libtool.m4 \
+ $(top_srcdir)/../../ltoptions.m4 \
+ $(top_srcdir)/../../ltsugar.m4 \
+ $(top_srcdir)/../../ltversion.m4 \
+ $(top_srcdir)/../../lt~obsolete.m4 \
+ $(top_srcdir)/../acinclude.m4 $(top_srcdir)/configure.in
+am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
+ $(ACLOCAL_M4)
+mkinstalldirs = $(SHELL) $(top_srcdir)/../../mkinstalldirs
+CONFIG_CLEAN_FILES =
+CONFIG_CLEAN_VPATH_FILES =
+LIBRARIES = $(noinst_LIBRARIES)
+ARFLAGS = cru
+lib_a_AR = $(AR) $(ARFLAGS)
+lib_a_LIBADD =
+am__objects_1 = lib_a-chk_fail.$(OBJEXT) \
+ lib_a-stack_protector.$(OBJEXT)
+am__objects_2 = lib_a-memcpy_chk.$(OBJEXT) lib_a-memmove_chk.$(OBJEXT) \
+ lib_a-mempcpy_chk.$(OBJEXT) lib_a-memset_chk.$(OBJEXT) \
+ lib_a-stpcpy_chk.$(OBJEXT) lib_a-stpncpy_chk.$(OBJEXT) \
+ lib_a-strcat_chk.$(OBJEXT) lib_a-strcpy_chk.$(OBJEXT) \
+ lib_a-strncat_chk.$(OBJEXT) lib_a-strncpy_chk.$(OBJEXT)
+am__objects_3 = lib_a-fgets_chk.$(OBJEXT) lib_a-gets_chk.$(OBJEXT) \
+ lib_a-snprintf_chk.$(OBJEXT) lib_a-sprintf_chk.$(OBJEXT) \
+ lib_a-vsnprintf_chk.$(OBJEXT) lib_a-vsprintf_chk.$(OBJEXT)
+@ELIX_LEVEL_1_FALSE@@ELIX_LEVEL_2_FALSE@@ELIX_LEVEL_3_FALSE@@ELIX_LEVEL_4_FALSE@@HAVE_STDIO_DIR_FALSE@am__objects_4 = $(am__objects_1) \
+@ELIX_LEVEL_1_FALSE@@ELIX_LEVEL_2_FALSE@@ELIX_LEVEL_3_FALSE@@ELIX_LEVEL_4_FALSE@@HAVE_STDIO_DIR_FALSE@ $(am__objects_2)
+@ELIX_LEVEL_1_FALSE@@ELIX_LEVEL_2_FALSE@@ELIX_LEVEL_3_FALSE@@ELIX_LEVEL_4_FALSE@@HAVE_STDIO_DIR_TRUE@am__objects_4 = $(am__objects_1) \
+@ELIX_LEVEL_1_FALSE@@ELIX_LEVEL_2_FALSE@@ELIX_LEVEL_3_FALSE@@ELIX_LEVEL_4_FALSE@@HAVE_STDIO_DIR_TRUE@ $(am__objects_2) \
+@ELIX_LEVEL_1_FALSE@@ELIX_LEVEL_2_FALSE@@ELIX_LEVEL_3_FALSE@@ELIX_LEVEL_4_FALSE@@HAVE_STDIO_DIR_TRUE@ $(am__objects_3)
+@USE_LIBTOOL_FALSE@am_lib_a_OBJECTS = $(am__objects_4)
+lib_a_OBJECTS = $(am_lib_a_OBJECTS)
+LTLIBRARIES = $(noinst_LTLIBRARIES)
+libssp_la_LIBADD =
+am__objects_5 = chk_fail.lo stack_protector.lo
+am__objects_6 = memcpy_chk.lo memmove_chk.lo mempcpy_chk.lo \
+ memset_chk.lo stpcpy_chk.lo stpncpy_chk.lo strcat_chk.lo \
+ strcpy_chk.lo strncat_chk.lo strncpy_chk.lo
+am__objects_7 = fgets_chk.lo gets_chk.lo snprintf_chk.lo \
+ sprintf_chk.lo vsnprintf_chk.lo vsprintf_chk.lo
+@ELIX_LEVEL_1_FALSE@@ELIX_LEVEL_2_FALSE@@ELIX_LEVEL_3_FALSE@@ELIX_LEVEL_4_FALSE@@HAVE_STDIO_DIR_FALSE@am__objects_8 = $(am__objects_5) \
+@ELIX_LEVEL_1_FALSE@@ELIX_LEVEL_2_FALSE@@ELIX_LEVEL_3_FALSE@@ELIX_LEVEL_4_FALSE@@HAVE_STDIO_DIR_FALSE@ $(am__objects_6)
+@ELIX_LEVEL_1_FALSE@@ELIX_LEVEL_2_FALSE@@ELIX_LEVEL_3_FALSE@@ELIX_LEVEL_4_FALSE@@HAVE_STDIO_DIR_TRUE@am__objects_8 = $(am__objects_5) \
+@ELIX_LEVEL_1_FALSE@@ELIX_LEVEL_2_FALSE@@ELIX_LEVEL_3_FALSE@@ELIX_LEVEL_4_FALSE@@HAVE_STDIO_DIR_TRUE@ $(am__objects_6) \
+@ELIX_LEVEL_1_FALSE@@ELIX_LEVEL_2_FALSE@@ELIX_LEVEL_3_FALSE@@ELIX_LEVEL_4_FALSE@@HAVE_STDIO_DIR_TRUE@ $(am__objects_7)
+@USE_LIBTOOL_TRUE@am_libssp_la_OBJECTS = $(am__objects_8)
+libssp_la_OBJECTS = $(am_libssp_la_OBJECTS)
+libssp_la_LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) \
+ $(LIBTOOLFLAGS) --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
+ $(libssp_la_LDFLAGS) $(LDFLAGS) -o $@
+@USE_LIBTOOL_TRUE@am_libssp_la_rpath =
+DEFAULT_INCLUDES = -I.@am__isrc@
+depcomp =
+am__depfiles_maybe =
+COMPILE = $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \
+ $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
+LTCOMPILE = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
+ --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) \
+ $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
+CCLD = $(CC)
+LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
+ --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) \
+ $(LDFLAGS) -o $@
+SOURCES = $(lib_a_SOURCES) $(libssp_la_SOURCES)
+am__can_run_installinfo = \
+ case $$AM_UPDATE_INFO_DIR in \
+ n|no|NO) false;; \
+ *) (install-info --version) >/dev/null 2>&1;; \
+ esac
+DATA = $(noinst_DATA)
+ETAGS = etags
+CTAGS = ctags
+ACLOCAL = @ACLOCAL@
+AMTAR = @AMTAR@
+AR = @AR@
+AS = @AS@
+AUTOCONF = @AUTOCONF@
+AUTOHEADER = @AUTOHEADER@
+AUTOMAKE = @AUTOMAKE@
+AWK = @AWK@
+CC = @CC@
+CCAS = @CCAS@
+CCASFLAGS = @CCASFLAGS@
+CCDEPMODE = @CCDEPMODE@
+CFLAGS = @CFLAGS@
+CPP = @CPP@
+CPPFLAGS = @CPPFLAGS@
+CRT0 = @CRT0@
+CYGPATH_W = @CYGPATH_W@
+DEFS = @DEFS@
+DEPDIR = @DEPDIR@
+DLLTOOL = @DLLTOOL@
+DSYMUTIL = @DSYMUTIL@
+DUMPBIN = @DUMPBIN@
+ECHO_C = @ECHO_C@
+ECHO_N = @ECHO_N@
+ECHO_T = @ECHO_T@
+EGREP = @EGREP@
+EXEEXT = @EXEEXT@
+FGREP = @FGREP@
+GREP = @GREP@
+INSTALL = @INSTALL@
+INSTALL_DATA = @INSTALL_DATA@
+INSTALL_PROGRAM = @INSTALL_PROGRAM@
+INSTALL_SCRIPT = @INSTALL_SCRIPT@
+INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@
+LD = @LD@
+LDFLAGS = @LDFLAGS@
+LIBC_EXTRA_DEF = @LIBC_EXTRA_DEF@
+LIBC_EXTRA_LIB = @LIBC_EXTRA_LIB@
+LIBC_MACHINE_LIB = @LIBC_MACHINE_LIB@
+LIBC_POSIX_DEF = @LIBC_POSIX_DEF@
+LIBC_POSIX_LIB = @LIBC_POSIX_LIB@
+LIBC_SIGNAL_DEF = @LIBC_SIGNAL_DEF@
+LIBC_SIGNAL_LIB = @LIBC_SIGNAL_LIB@
+LIBC_STDIO64_DEF = @LIBC_STDIO64_DEF@
+LIBC_STDIO64_LIB = @LIBC_STDIO64_LIB@
+LIBC_STDIO_DEF = @LIBC_STDIO_DEF@
+LIBC_STDIO_LIB = @LIBC_STDIO_LIB@
+LIBC_SYSCALL_LIB = @LIBC_SYSCALL_LIB@
+LIBC_SYS_LIB = @LIBC_SYS_LIB@
+LIBC_UNIX_LIB = @LIBC_UNIX_LIB@
+LIBC_XDR_DEF = @LIBC_XDR_DEF@
+LIBC_XDR_LIB = @LIBC_XDR_LIB@
+LIBOBJS = @LIBOBJS@
+LIBS = @LIBS@
+LIBTOOL = @LIBTOOL@
+LIPO = @LIPO@
+LN_S = @LN_S@
+LTLIBOBJS = @LTLIBOBJS@
+MAINT = @MAINT@
+MAKEINFO = @MAKEINFO@
+MKDIR_P = @MKDIR_P@
+NEWLIB_CFLAGS = @NEWLIB_CFLAGS@
+NM = @NM@
+NMEDIT = @NMEDIT@
+NO_INCLUDE_LIST = @NO_INCLUDE_LIST@
+OBJDUMP = @OBJDUMP@
+OBJEXT = @OBJEXT@
+OTOOL = @OTOOL@
+OTOOL64 = @OTOOL64@
+PACKAGE = @PACKAGE@
+PACKAGE_BUGREPORT = @PACKAGE_BUGREPORT@
+PACKAGE_NAME = @PACKAGE_NAME@
+PACKAGE_STRING = @PACKAGE_STRING@
+PACKAGE_TARNAME = @PACKAGE_TARNAME@
+PACKAGE_URL = @PACKAGE_URL@
+PACKAGE_VERSION = @PACKAGE_VERSION@
+PATH_SEPARATOR = @PATH_SEPARATOR@
+RANLIB = @RANLIB@
+READELF = @READELF@
+SED = @SED@
+SET_MAKE = @SET_MAKE@
+SHELL = @SHELL@
+STRIP = @STRIP@
+VERSION = @VERSION@
+abs_builddir = @abs_builddir@
+abs_srcdir = @abs_srcdir@
+abs_top_builddir = @abs_top_builddir@
+abs_top_srcdir = @abs_top_srcdir@
+ac_ct_CC = @ac_ct_CC@
+ac_ct_DUMPBIN = @ac_ct_DUMPBIN@
+aext = @aext@
+am__include = @am__include@
+am__leading_dot = @am__leading_dot@
+am__quote = @am__quote@
+am__tar = @am__tar@
+am__untar = @am__untar@
+bindir = @bindir@
+build = @build@
+build_alias = @build_alias@
+build_cpu = @build_cpu@
+build_os = @build_os@
+build_vendor = @build_vendor@
+builddir = @builddir@
+datadir = @datadir@
+datarootdir = @datarootdir@
+docdir = @docdir@
+dvidir = @dvidir@
+exec_prefix = @exec_prefix@
+extra_dir = @extra_dir@
+host = @host@
+host_alias = @host_alias@
+host_cpu = @host_cpu@
+host_os = @host_os@
+host_vendor = @host_vendor@
+htmldir = @htmldir@
+includedir = @includedir@
+infodir = @infodir@
+install_sh = @install_sh@
+libdir = @libdir@
+libexecdir = @libexecdir@
+libm_machine_dir = @libm_machine_dir@
+localedir = @localedir@
+localstatedir = @localstatedir@
+lpfx = @lpfx@
+machine_dir = @machine_dir@
+mandir = @mandir@
+mkdir_p = @mkdir_p@
+newlib_basedir = @newlib_basedir@
+oext = @oext@
+oldincludedir = @oldincludedir@
+pdfdir = @pdfdir@
+prefix = @prefix@
+program_transform_name = @program_transform_name@
+psdir = @psdir@
+sbindir = @sbindir@
+sharedstatedir = @sharedstatedir@
+srcdir = @srcdir@
+subdirs = @subdirs@
+sys_dir = @sys_dir@
+sysconfdir = @sysconfdir@
+target_alias = @target_alias@
+top_build_prefix = @top_build_prefix@
+top_builddir = @top_builddir@
+top_srcdir = @top_srcdir@
+AUTOMAKE_OPTIONS = cygnus
+INCLUDES = $(NEWLIB_CFLAGS) $(CROSS_CFLAGS) $(TARGET_CFLAGS)
+GENERAL_SOURCES = \
+ chk_fail.c \
+ stack_protector.c
+
+STRING_SOURCES = \
+ memcpy_chk.c \
+ memmove_chk.c \
+ mempcpy_chk.c \
+ memset_chk.c \
+ stpcpy_chk.c \
+ stpncpy_chk.c \
+ strcat_chk.c \
+ strcpy_chk.c \
+ strncat_chk.c \
+ strncpy_chk.c
+
+STDIO_SOURCES = \
+ fgets_chk.c \
+ gets_chk.c \
+ snprintf_chk.c \
+ sprintf_chk.c \
+ vsnprintf_chk.c \
+ vsprintf_chk.c
+
+@ELIX_LEVEL_1_FALSE@@ELIX_LEVEL_2_FALSE@@ELIX_LEVEL_3_FALSE@@ELIX_LEVEL_4_FALSE@@HAVE_STDIO_DIR_FALSE@ELIX_SOURCES = $(GENERAL_SOURCES) $(STRING_SOURCES)
+@ELIX_LEVEL_1_FALSE@@ELIX_LEVEL_2_FALSE@@ELIX_LEVEL_3_FALSE@@ELIX_LEVEL_4_FALSE@@HAVE_STDIO_DIR_TRUE@ELIX_SOURCES = $(GENERAL_SOURCES) $(STRING_SOURCES) $(STDIO_SOURCES)
+@ELIX_LEVEL_1_FALSE@@ELIX_LEVEL_2_FALSE@@ELIX_LEVEL_3_FALSE@@ELIX_LEVEL_4_TRUE@ELIX_SOURCES =
+@ELIX_LEVEL_1_FALSE@@ELIX_LEVEL_2_FALSE@@ELIX_LEVEL_3_TRUE@ELIX_SOURCES =
+@ELIX_LEVEL_1_FALSE@@ELIX_LEVEL_2_TRUE@ELIX_SOURCES =
+@ELIX_LEVEL_1_TRUE@ELIX_SOURCES =
+libssp_la_LDFLAGS = -Xcompiler -nostdlib
+@USE_LIBTOOL_TRUE@noinst_LTLIBRARIES = libssp.la
+@USE_LIBTOOL_TRUE@libssp_la_SOURCES = $(ELIX_SOURCES)
+@USE_LIBTOOL_FALSE@noinst_DATA =
+@USE_LIBTOOL_TRUE@noinst_DATA = objectlist.awk.in
+@USE_LIBTOOL_FALSE@noinst_LIBRARIES = lib.a
+@USE_LIBTOOL_FALSE@lib_a_SOURCES = $(ELIX_SOURCES)
+@USE_LIBTOOL_FALSE@lib_a_CFLAGS = $(AM_CFLAGS)
+CHEWOUT_FILES =
+CHAPTERS =
+
+#
+# documentation rules
+#
+SUFFIXES = .def .xml
+CHEW = ${top_builddir}/../doc/makedoc -f $(top_srcdir)/../doc/doc.str
+DOCBOOK_CHEW = ${top_srcdir}/../doc/makedocbook.py
+DOCBOOK_OUT_FILES = $(CHEWOUT_FILES:.def=.xml)
+DOCBOOK_CHAPTERS = $(CHAPTERS:.tex=.xml)
+CLEANFILES = $(CHEWOUT_FILES) $(CHEWOUT_FILES:.def=.ref) $(DOCBOOK_OUT_FILES)
+all: all-am
+
+.SUFFIXES:
+.SUFFIXES: .def .xml .c .lo .o .obj
+$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am $(srcdir)/../../Makefile.shared $(am__configure_deps)
+ @for dep in $?; do \
+ case '$(am__configure_deps)' in \
+ *$$dep*) \
+ ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+ && { if test -f $@; then exit 0; else break; fi; }; \
+ exit 1;; \
+ esac; \
+ done; \
+ echo ' cd $(top_srcdir) && $(AUTOMAKE) --cygnus ssp/Makefile'; \
+ $(am__cd) $(top_srcdir) && \
+ $(AUTOMAKE) --cygnus ssp/Makefile
+.PRECIOUS: Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+ @case '$?' in \
+ *config.status*) \
+ cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+ *) \
+ echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
+ cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
+ esac;
+$(srcdir)/../../Makefile.shared:
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+ cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
+ cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
+ cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
+
+clean-noinstLIBRARIES:
+ -test -z "$(noinst_LIBRARIES)" || rm -f $(noinst_LIBRARIES)
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+ -rm -f lib.a
+ $(lib_a_AR) lib.a $(lib_a_OBJECTS) $(lib_a_LIBADD)
+ $(RANLIB) lib.a
+
+clean-noinstLTLIBRARIES:
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+ @list='$(noinst_LTLIBRARIES)'; for p in $$list; do \
+ dir="`echo $$p | sed -e 's|/[^/]*$$||'`"; \
+ test "$$dir" != "$$p" || dir=.; \
+ echo "rm -f \"$${dir}/so_locations\""; \
+ rm -f "$${dir}/so_locations"; \
+ done
+libssp.la: $(libssp_la_OBJECTS) $(libssp_la_DEPENDENCIES) $(EXTRA_libssp_la_DEPENDENCIES)
+ $(libssp_la_LINK) $(am_libssp_la_rpath) $(libssp_la_OBJECTS) $(libssp_la_LIBADD) $(LIBS)
+
+mostlyclean-compile:
+ -rm -f *.$(OBJEXT)
+
+distclean-compile:
+ -rm -f *.tab.c
+
+.c.o:
+ $(COMPILE) -c $<
+
+.c.obj:
+ $(COMPILE) -c `$(CYGPATH_W) '$<'`
+
+.c.lo:
+ $(LTCOMPILE) -c -o $@ $<
+
+lib_a-chk_fail.o: chk_fail.c
+ $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-chk_fail.o `test -f 'chk_fail.c' || echo '$(srcdir)/'`chk_fail.c
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+ $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-chk_fail.obj `if test -f 'chk_fail.c'; then $(CYGPATH_W) 'chk_fail.c'; else $(CYGPATH_W) '$(srcdir)/chk_fail.c'; fi`
+
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+ $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-stack_protector.o `test -f 'stack_protector.c' || echo '$(srcdir)/'`stack_protector.c
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+ $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-stack_protector.obj `if test -f 'stack_protector.c'; then $(CYGPATH_W) 'stack_protector.c'; else $(CYGPATH_W) '$(srcdir)/stack_protector.c'; fi`
+
+lib_a-memcpy_chk.o: memcpy_chk.c
+ $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-memcpy_chk.o `test -f 'memcpy_chk.c' || echo '$(srcdir)/'`memcpy_chk.c
+
+lib_a-memcpy_chk.obj: memcpy_chk.c
+ $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-memcpy_chk.obj `if test -f 'memcpy_chk.c'; then $(CYGPATH_W) 'memcpy_chk.c'; else $(CYGPATH_W) '$(srcdir)/memcpy_chk.c'; fi`
+
+lib_a-memmove_chk.o: memmove_chk.c
+ $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-memmove_chk.o `test -f 'memmove_chk.c' || echo '$(srcdir)/'`memmove_chk.c
+
+lib_a-memmove_chk.obj: memmove_chk.c
+ $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-memmove_chk.obj `if test -f 'memmove_chk.c'; then $(CYGPATH_W) 'memmove_chk.c'; else $(CYGPATH_W) '$(srcdir)/memmove_chk.c'; fi`
+
+lib_a-mempcpy_chk.o: mempcpy_chk.c
+ $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-mempcpy_chk.o `test -f 'mempcpy_chk.c' || echo '$(srcdir)/'`mempcpy_chk.c
+
+lib_a-mempcpy_chk.obj: mempcpy_chk.c
+ $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-mempcpy_chk.obj `if test -f 'mempcpy_chk.c'; then $(CYGPATH_W) 'mempcpy_chk.c'; else $(CYGPATH_W) '$(srcdir)/mempcpy_chk.c'; fi`
+
+lib_a-memset_chk.o: memset_chk.c
+ $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-memset_chk.o `test -f 'memset_chk.c' || echo '$(srcdir)/'`memset_chk.c
+
+lib_a-memset_chk.obj: memset_chk.c
+ $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-memset_chk.obj `if test -f 'memset_chk.c'; then $(CYGPATH_W) 'memset_chk.c'; else $(CYGPATH_W) '$(srcdir)/memset_chk.c'; fi`
+
+lib_a-stpcpy_chk.o: stpcpy_chk.c
+ $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-stpcpy_chk.o `test -f 'stpcpy_chk.c' || echo '$(srcdir)/'`stpcpy_chk.c
+
+lib_a-stpcpy_chk.obj: stpcpy_chk.c
+ $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-stpcpy_chk.obj `if test -f 'stpcpy_chk.c'; then $(CYGPATH_W) 'stpcpy_chk.c'; else $(CYGPATH_W) '$(srcdir)/stpcpy_chk.c'; fi`
+
+lib_a-stpncpy_chk.o: stpncpy_chk.c
+ $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-stpncpy_chk.o `test -f 'stpncpy_chk.c' || echo '$(srcdir)/'`stpncpy_chk.c
+
+lib_a-stpncpy_chk.obj: stpncpy_chk.c
+ $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-stpncpy_chk.obj `if test -f 'stpncpy_chk.c'; then $(CYGPATH_W) 'stpncpy_chk.c'; else $(CYGPATH_W) '$(srcdir)/stpncpy_chk.c'; fi`
+
+lib_a-strcat_chk.o: strcat_chk.c
+ $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-strcat_chk.o `test -f 'strcat_chk.c' || echo '$(srcdir)/'`strcat_chk.c
+
+lib_a-strcat_chk.obj: strcat_chk.c
+ $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-strcat_chk.obj `if test -f 'strcat_chk.c'; then $(CYGPATH_W) 'strcat_chk.c'; else $(CYGPATH_W) '$(srcdir)/strcat_chk.c'; fi`
+
+lib_a-strcpy_chk.o: strcpy_chk.c
+ $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-strcpy_chk.o `test -f 'strcpy_chk.c' || echo '$(srcdir)/'`strcpy_chk.c
+
+lib_a-strcpy_chk.obj: strcpy_chk.c
+ $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-strcpy_chk.obj `if test -f 'strcpy_chk.c'; then $(CYGPATH_W) 'strcpy_chk.c'; else $(CYGPATH_W) '$(srcdir)/strcpy_chk.c'; fi`
+
+lib_a-strncat_chk.o: strncat_chk.c
+ $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-strncat_chk.o `test -f 'strncat_chk.c' || echo '$(srcdir)/'`strncat_chk.c
+
+lib_a-strncat_chk.obj: strncat_chk.c
+ $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-strncat_chk.obj `if test -f 'strncat_chk.c'; then $(CYGPATH_W) 'strncat_chk.c'; else $(CYGPATH_W) '$(srcdir)/strncat_chk.c'; fi`
+
+lib_a-strncpy_chk.o: strncpy_chk.c
+ $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-strncpy_chk.o `test -f 'strncpy_chk.c' || echo '$(srcdir)/'`strncpy_chk.c
+
+lib_a-strncpy_chk.obj: strncpy_chk.c
+ $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-strncpy_chk.obj `if test -f 'strncpy_chk.c'; then $(CYGPATH_W) 'strncpy_chk.c'; else $(CYGPATH_W) '$(srcdir)/strncpy_chk.c'; fi`
+
+lib_a-fgets_chk.o: fgets_chk.c
+ $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-fgets_chk.o `test -f 'fgets_chk.c' || echo '$(srcdir)/'`fgets_chk.c
+
+lib_a-fgets_chk.obj: fgets_chk.c
+ $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-fgets_chk.obj `if test -f 'fgets_chk.c'; then $(CYGPATH_W) 'fgets_chk.c'; else $(CYGPATH_W) '$(srcdir)/fgets_chk.c'; fi`
+
+lib_a-gets_chk.o: gets_chk.c
+ $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-gets_chk.o `test -f 'gets_chk.c' || echo '$(srcdir)/'`gets_chk.c
+
+lib_a-gets_chk.obj: gets_chk.c
+ $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-gets_chk.obj `if test -f 'gets_chk.c'; then $(CYGPATH_W) 'gets_chk.c'; else $(CYGPATH_W) '$(srcdir)/gets_chk.c'; fi`
+
+lib_a-snprintf_chk.o: snprintf_chk.c
+ $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-snprintf_chk.o `test -f 'snprintf_chk.c' || echo '$(srcdir)/'`snprintf_chk.c
+
+lib_a-snprintf_chk.obj: snprintf_chk.c
+ $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-snprintf_chk.obj `if test -f 'snprintf_chk.c'; then $(CYGPATH_W) 'snprintf_chk.c'; else $(CYGPATH_W) '$(srcdir)/snprintf_chk.c'; fi`
+
+lib_a-sprintf_chk.o: sprintf_chk.c
+ $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-sprintf_chk.o `test -f 'sprintf_chk.c' || echo '$(srcdir)/'`sprintf_chk.c
+
+lib_a-sprintf_chk.obj: sprintf_chk.c
+ $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-sprintf_chk.obj `if test -f 'sprintf_chk.c'; then $(CYGPATH_W) 'sprintf_chk.c'; else $(CYGPATH_W) '$(srcdir)/sprintf_chk.c'; fi`
+
+lib_a-vsnprintf_chk.o: vsnprintf_chk.c
+ $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-vsnprintf_chk.o `test -f 'vsnprintf_chk.c' || echo '$(srcdir)/'`vsnprintf_chk.c
+
+lib_a-vsnprintf_chk.obj: vsnprintf_chk.c
+ $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-vsnprintf_chk.obj `if test -f 'vsnprintf_chk.c'; then $(CYGPATH_W) 'vsnprintf_chk.c'; else $(CYGPATH_W) '$(srcdir)/vsnprintf_chk.c'; fi`
+
+lib_a-vsprintf_chk.o: vsprintf_chk.c
+ $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-vsprintf_chk.o `test -f 'vsprintf_chk.c' || echo '$(srcdir)/'`vsprintf_chk.c
+
+lib_a-vsprintf_chk.obj: vsprintf_chk.c
+ $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(lib_a_CFLAGS) $(CFLAGS) -c -o lib_a-vsprintf_chk.obj `if test -f 'vsprintf_chk.c'; then $(CYGPATH_W) 'vsprintf_chk.c'; else $(CYGPATH_W) '$(srcdir)/vsprintf_chk.c'; fi`
+
+mostlyclean-libtool:
+ -rm -f *.lo
+
+clean-libtool:
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+ID: $(HEADERS) $(SOURCES) $(LISP) $(TAGS_FILES)
+ list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \
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+ if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
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+ mkid -fID $$unique
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+ here=`pwd`; \
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+ install; \
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+ distclean-libtool distclean-tags dvi dvi-am html html-am info \
+ info-am install install-am install-data install-data-am \
+ install-dvi install-dvi-am install-exec install-exec-am \
+ install-html install-html-am install-info install-info-am \
+ install-man install-pdf install-pdf-am install-ps \
+ install-ps-am install-strip installcheck installcheck-am \
+ installdirs maintainer-clean maintainer-clean-generic \
+ mostlyclean mostlyclean-compile mostlyclean-generic \
+ mostlyclean-libtool pdf pdf-am ps ps-am tags uninstall \
+ uninstall-am
+
+objectlist.awk.in: $(noinst_LTLIBRARIES)
+ -rm -f objectlist.awk.in
+ for i in `ls *.lo` ; \
+ do \
+ echo $$i `pwd`/$$i >> objectlist.awk.in ; \
+ done
+
+.c.def:
+ $(CHEW) < $< > $*.def 2> $*.ref
+ touch stmp-def
+
+TARGETDOC ?= ../tmp.texi
+
+doc: $(CHEWOUT_FILES)
+ for chapter in $(CHAPTERS) ; \
+ do \
+ cat $(srcdir)/$$chapter >> $(TARGETDOC) ; \
+ done
+
+.c.xml:
+ $(DOCBOOK_CHEW) < $< > $*.xml || ( rm $*.xml && false )
+ @touch stmp-xml
+
+docbook: $(DOCBOOK_OUT_FILES)
+ for chapter in $(DOCBOOK_CHAPTERS) ; \
+ do \
+ ${top_srcdir}/../doc/chapter-texi2docbook.py <$(srcdir)/$${chapter%.xml}.tex >../$$chapter ; \
+ done
+# No doc for ssp.
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
--
2.14.3
^ permalink raw reply [flat|nested] 13+ messages in thread
* [PATCH v1 04/10] ssp: add Object Size Checking for basic stdio functions
2017-11-01 4:53 [PATCH v1 00/10] Add Stack Smashing Protection and Object Size Checking Yaakov Selkowitz
` (8 preceding siblings ...)
2017-11-01 5:05 ` [PATCH v1 07/10] ssp: add build infrastructure Yaakov Selkowitz
@ 2017-11-02 8:28 ` Yaakov Selkowitz
2017-11-02 14:28 ` [PATCH v1 00/10] Add Stack Smashing Protection and Object Size Checking Corinna Vinschen
10 siblings, 0 replies; 13+ messages in thread
From: Yaakov Selkowitz @ 2017-11-02 8:28 UTC (permalink / raw)
To: newlib
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
---
newlib/libc/include/ssp/stdio.h | 74 ++++++++++++++++++++++++++++++++++++++
newlib/libc/include/stdio.h | 4 +++
newlib/libc/ssp/fgets_chk.c | 55 +++++++++++++++++++++++++++++
newlib/libc/ssp/gets_chk.c | 78 +++++++++++++++++++++++++++++++++++++++++
newlib/libc/ssp/snprintf_chk.c | 59 +++++++++++++++++++++++++++++++
newlib/libc/ssp/sprintf_chk.c | 63 +++++++++++++++++++++++++++++++++
newlib/libc/ssp/vsnprintf_chk.c | 51 +++++++++++++++++++++++++++
newlib/libc/ssp/vsprintf_chk.c | 60 +++++++++++++++++++++++++++++++
8 files changed, 444 insertions(+)
create mode 100644 newlib/libc/include/ssp/stdio.h
create mode 100644 newlib/libc/ssp/fgets_chk.c
create mode 100644 newlib/libc/ssp/gets_chk.c
create mode 100644 newlib/libc/ssp/snprintf_chk.c
create mode 100644 newlib/libc/ssp/sprintf_chk.c
create mode 100644 newlib/libc/ssp/vsnprintf_chk.c
create mode 100644 newlib/libc/ssp/vsprintf_chk.c
diff --git a/newlib/libc/include/ssp/stdio.h b/newlib/libc/include/ssp/stdio.h
new file mode 100644
index 000000000..b03bccaaf
--- /dev/null
+++ b/newlib/libc/include/ssp/stdio.h
@@ -0,0 +1,74 @@
+/* $NetBSD: stdio.h,v 1.5 2011/07/17 20:54:34 joerg Exp $ */
+
+/*-
+ * Copyright (c) 2006 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Christos Zoulas.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef _SSP_STDIO_H_
+#define _SSP_STDIO_H_
+
+#include <ssp/ssp.h>
+
+__BEGIN_DECLS
+int __sprintf_chk(char *__restrict, int, size_t, const char *__restrict, ...)
+ __printflike(4, 5);
+int __vsprintf_chk(char *__restrict, int, size_t, const char *__restrict,
+ __va_list)
+ __printflike(4, 0);
+int __snprintf_chk(char *__restrict, size_t, int, size_t,
+ const char *__restrict, ...)
+ __printflike(5, 6);
+int __vsnprintf_chk(char *__restrict, size_t, int, size_t,
+ const char *__restrict, __va_list)
+ __printflike(5, 0);
+char *__gets_chk(char *, size_t);
+char *__fgets_chk(char *, int, size_t, FILE *);
+__END_DECLS
+
+#if __SSP_FORTIFY_LEVEL > 0
+
+
+#define sprintf(str, ...) \
+ __builtin___sprintf_chk(str, 0, __ssp_bos(str), __VA_ARGS__)
+
+#define vsprintf(str, fmt, ap) \
+ __builtin___vsprintf_chk(str, 0, __ssp_bos(str), fmt, ap)
+
+#define snprintf(str, len, ...) \
+ __builtin___snprintf_chk(str, len, 0, __ssp_bos(str), __VA_ARGS__)
+
+#define vsnprintf(str, len, fmt, ap) \
+ __builtin___vsnprintf_chk(str, len, 0, __ssp_bos(str), fmt, ap)
+
+#define gets(str) \
+ __gets_chk(str, __ssp_bos(str))
+
+#define fgets(str, len, fp) \
+ __fgets_chk(str, len, __ssp_bos(str), fp)
+#endif /* __SSP_FORTIFY_LEVEL > 0 */
+
+#endif /* _SSP_STDIO_H_ */
diff --git a/newlib/libc/include/stdio.h b/newlib/libc/include/stdio.h
index ee0f612c4..df4118ffe 100644
--- a/newlib/libc/include/stdio.h
+++ b/newlib/libc/include/stdio.h
@@ -796,4 +796,8 @@ _putchar_unlocked(int _c)
_END_STD_C
+#if _FORTIFY_SOURCE > 0
+#include <ssp/stdio.h>
+#endif
+
#endif /* _STDIO_H_ */
diff --git a/newlib/libc/ssp/fgets_chk.c b/newlib/libc/ssp/fgets_chk.c
new file mode 100644
index 000000000..377579ff6
--- /dev/null
+++ b/newlib/libc/ssp/fgets_chk.c
@@ -0,0 +1,55 @@
+/* $NetBSD: fgets_chk.c,v 1.6 2009/02/05 05:41:51 lukem Exp $ */
+
+/*-
+ * Copyright (c) 2006 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Christos Zoulas.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <sys/cdefs.h>
+__RCSID("$NetBSD: fgets_chk.c,v 1.6 2009/02/05 05:41:51 lukem Exp $");
+
+/*LINTLIBRARY*/
+
+#include <ssp/ssp.h>
+#include <stdio.h>
+#include <string.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <ssp/stdio.h>
+
+#undef fgets
+
+char *
+__fgets_chk(char * __restrict buf, int len, size_t slen, FILE *fp)
+{
+ if (slen >= (size_t)INT_MAX)
+ return fgets(buf, len, fp);
+
+ if (len >= 0 && (size_t)len > slen)
+ __chk_fail();
+
+ return fgets(buf, len, fp);
+}
diff --git a/newlib/libc/ssp/gets_chk.c b/newlib/libc/ssp/gets_chk.c
new file mode 100644
index 000000000..b4f7015bc
--- /dev/null
+++ b/newlib/libc/ssp/gets_chk.c
@@ -0,0 +1,78 @@
+/* $NetBSD: gets_chk.c,v 1.7 2013/10/04 20:49:16 christos Exp $ */
+
+/*-
+ * Copyright (c) 2006 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Christos Zoulas.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <sys/cdefs.h>
+__RCSID("$NetBSD: gets_chk.c,v 1.7 2013/10/04 20:49:16 christos Exp $");
+
+/*LINTLIBRARY*/
+
+#include <ssp/ssp.h>
+#include <stdio.h>
+#include <string.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <ssp/stdio.h>
+
+extern char *__gets(char *);
+#undef gets
+#ifdef __NEWLIB__
+#define __gets gets
+#endif
+
+char *
+__gets_chk(char * __restrict buf, size_t slen)
+{
+ char *abuf;
+ size_t len;
+
+ if (slen >= (size_t)INT_MAX)
+ return __gets(buf);
+
+ if ((abuf = malloc(slen + 1)) == NULL)
+ return __gets(buf);
+
+ if (fgets(abuf, (int)(slen + 1), stdin) == NULL) {
+ free(abuf);
+ return NULL;
+ }
+
+ len = strlen(abuf);
+ if (len > 0 && abuf[len - 1] == '\n')
+ --len;
+
+ if (len >= slen)
+ __chk_fail();
+
+ (void)memcpy(buf, abuf, len);
+
+ buf[len] = '\0';
+ free(abuf);
+ return buf;
+}
diff --git a/newlib/libc/ssp/snprintf_chk.c b/newlib/libc/ssp/snprintf_chk.c
new file mode 100644
index 000000000..cede5a4bd
--- /dev/null
+++ b/newlib/libc/ssp/snprintf_chk.c
@@ -0,0 +1,59 @@
+/* $NetBSD: snprintf_chk.c,v 1.5 2008/04/28 20:23:00 martin Exp $ */
+
+/*-
+ * Copyright (c) 2006 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Christos Zoulas.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <sys/cdefs.h>
+__RCSID("$NetBSD: snprintf_chk.c,v 1.5 2008/04/28 20:23:00 martin Exp $");
+
+/*LINTLIBRARY*/
+
+#include <ssp/ssp.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include <ssp/stdio.h>
+
+#undef vsnprintf
+
+/*ARGSUSED*/
+int
+__snprintf_chk(char * __restrict buf, size_t len, int flags, size_t slen,
+ const char * __restrict fmt, ...)
+{
+ va_list ap;
+ int rv;
+
+ if (len > slen)
+ __chk_fail();
+
+ va_start(ap, fmt);
+ rv = vsnprintf(buf, len, fmt, ap);
+ va_end(ap);
+
+ return rv;
+}
diff --git a/newlib/libc/ssp/sprintf_chk.c b/newlib/libc/ssp/sprintf_chk.c
new file mode 100644
index 000000000..1e924799b
--- /dev/null
+++ b/newlib/libc/ssp/sprintf_chk.c
@@ -0,0 +1,63 @@
+/* $NetBSD: sprintf_chk.c,v 1.6 2009/02/05 05:40:36 lukem Exp $ */
+
+/*-
+ * Copyright (c) 2006 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Christos Zoulas.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <sys/cdefs.h>
+__RCSID("$NetBSD: sprintf_chk.c,v 1.6 2009/02/05 05:40:36 lukem Exp $");
+
+/*LINTLIBRARY*/
+
+#include <ssp/ssp.h>
+#include <stdio.h>
+#include <limits.h>
+#include <stdarg.h>
+#include <ssp/stdio.h>
+
+#undef vsnprintf
+#undef vsprintf
+
+int
+/*ARGSUSED*/
+__sprintf_chk(char * __restrict buf, int flags, size_t slen,
+ const char * __restrict fmt, ...)
+{
+ va_list ap;
+ int rv;
+
+ va_start(ap, fmt);
+ if (slen > (size_t)INT_MAX)
+ rv = vsprintf(buf, fmt, ap);
+ else {
+ if ((rv = vsnprintf(buf, slen, fmt, ap)) >= 0 && (size_t)rv >= slen)
+ __chk_fail();
+ }
+ va_end(ap);
+
+ return rv;
+}
diff --git a/newlib/libc/ssp/vsnprintf_chk.c b/newlib/libc/ssp/vsnprintf_chk.c
new file mode 100644
index 000000000..2b8802908
--- /dev/null
+++ b/newlib/libc/ssp/vsnprintf_chk.c
@@ -0,0 +1,51 @@
+/* $NetBSD: vsnprintf_chk.c,v 1.5 2008/04/28 20:23:00 martin Exp $ */
+
+/*-
+ * Copyright (c) 2006 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Christos Zoulas.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <sys/cdefs.h>
+__RCSID("$NetBSD: vsnprintf_chk.c,v 1.5 2008/04/28 20:23:00 martin Exp $");
+
+/*LINTLIBRARY*/
+
+#include <ssp/ssp.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include <ssp/stdio.h>
+
+#undef vsnprintf
+
+int
+__vsnprintf_chk(char * __restrict buf, size_t len, int flags, size_t slen,
+ const char * __restrict fmt, va_list ap)
+{
+ if (len > slen)
+ __chk_fail();
+
+ return vsnprintf(buf, len, fmt, ap);
+}
diff --git a/newlib/libc/ssp/vsprintf_chk.c b/newlib/libc/ssp/vsprintf_chk.c
new file mode 100644
index 000000000..fec8a18c7
--- /dev/null
+++ b/newlib/libc/ssp/vsprintf_chk.c
@@ -0,0 +1,60 @@
+/* $NetBSD: vsprintf_chk.c,v 1.6 2009/02/05 05:39:38 lukem Exp $ */
+
+/*-
+ * Copyright (c) 2006 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Christos Zoulas.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <sys/cdefs.h>
+__RCSID("$NetBSD: vsprintf_chk.c,v 1.6 2009/02/05 05:39:38 lukem Exp $");
+
+/*LINTLIBRARY*/
+
+#include <ssp/ssp.h>
+#include <stdio.h>
+#include <limits.h>
+#include <stdarg.h>
+#include <ssp/stdio.h>
+
+#undef vsprintf
+#undef vsnprintf
+
+/*ARGSUSED*/
+int
+__vsprintf_chk(char * __restrict buf, int flags, size_t slen,
+ const char * __restrict fmt, va_list ap)
+{
+ int rv;
+
+ if (slen > (size_t)INT_MAX)
+ rv = vsprintf(buf, fmt, ap);
+ else {
+ if ((rv = vsnprintf(buf, slen, fmt, ap)) >= 0 && (size_t)rv >= slen)
+ __chk_fail();
+ }
+
+ return rv;
+}
--
2.14.3
^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [PATCH v1 00/10] Add Stack Smashing Protection and Object Size Checking
2017-11-01 4:53 [PATCH v1 00/10] Add Stack Smashing Protection and Object Size Checking Yaakov Selkowitz
` (9 preceding siblings ...)
2017-11-02 8:28 ` [PATCH v1 04/10] ssp: add Object Size Checking for basic stdio functions Yaakov Selkowitz
@ 2017-11-02 14:28 ` Corinna Vinschen
2017-11-06 18:40 ` Yaakov Selkowitz
10 siblings, 1 reply; 13+ messages in thread
From: Corinna Vinschen @ 2017-11-02 14:28 UTC (permalink / raw)
To: newlib
[-- Attachment #1: Type: text/plain, Size: 369 bytes --]
On Oct 31 23:52, Yaakov Selkowitz wrote:
> This is an initial draft; I am using the topic/ssp branch for development
> of this feature.
This looks good. Is that basically the final state for the first patch
submission as you see it? And how do you coordinate the required GCC
change?
Thanks,
Corinna
--
Corinna Vinschen
Cygwin Maintainer
Red Hat
[-- Attachment #2: signature.asc --]
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^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [PATCH v1 00/10] Add Stack Smashing Protection and Object Size Checking
2017-11-02 14:28 ` [PATCH v1 00/10] Add Stack Smashing Protection and Object Size Checking Corinna Vinschen
@ 2017-11-06 18:40 ` Yaakov Selkowitz
0 siblings, 0 replies; 13+ messages in thread
From: Yaakov Selkowitz @ 2017-11-06 18:40 UTC (permalink / raw)
To: newlib
[-- Attachment #1.1: Type: text/plain, Size: 982 bytes --]
On 2017-11-02 09:25, Corinna Vinschen wrote:
> On Oct 31 23:52, Yaakov Selkowitz wrote:
>> This is an initial draft; I am using the topic/ssp branch for development
>> of this feature.
>
> This looks good. Is that basically the final state for the first patch
> submission as you see it?
The topic/ssp branch now contains patchset v2, and I'm considering a few
more minor changes which shouldn't take long.
> And how do you coordinate the required GCC change?
I think the gcc change will need to be conditional on the presence of
$target_header_dir/ssp/ssp.h, in order to continue to support older
Newlib/Cygwin/RTEMS releases. If so, then this will have to go in
first, then I submit the change to GCC and get it pulled into supported
stable branches. Toolchain builders will need to configure with
--disable-libssp permanently (like on other targets with their own
implementation) and carry a small patch until releases are available.
--
Yaakov
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^ permalink raw reply [flat|nested] 13+ messages in thread
end of thread, other threads:[~2017-11-03 6:10 UTC | newest]
Thread overview: 13+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2017-11-01 4:53 [PATCH v1 00/10] Add Stack Smashing Protection and Object Size Checking Yaakov Selkowitz
2017-11-01 4:53 ` [PATCH v1 10/10] cygwin: create libssp compatibility import library Yaakov Selkowitz
2017-11-01 4:53 ` [PATCH v1 03/10] ssp: add Object Size Checking for bcopy, bzero Yaakov Selkowitz
2017-11-01 4:53 ` [PATCH v1 01/10] ssp: add APIs for Stack Smashing Protection (-fstack-protector*) Yaakov Selkowitz
2017-11-01 4:53 ` [PATCH v1 02/10] ssp: add Object Size Checking for basic string functions Yaakov Selkowitz
2017-11-01 4:53 ` [PATCH v1 05/10] ssp: add Object Size Checking for basic unistd.h functions Yaakov Selkowitz
2017-11-01 4:53 ` [PATCH v1 06/10] ssp: document _FORTIFY_SOURCE with the feature test macros Yaakov Selkowitz
2017-11-01 4:58 ` [PATCH v1 08/10] ssp: install headers Yaakov Selkowitz
2017-11-01 5:04 ` [PATCH v1 09/10] cygwin: export SSP functions Yaakov Selkowitz
2017-11-01 5:05 ` [PATCH v1 07/10] ssp: add build infrastructure Yaakov Selkowitz
2017-11-02 8:28 ` [PATCH v1 04/10] ssp: add Object Size Checking for basic stdio functions Yaakov Selkowitz
2017-11-02 14:28 ` [PATCH v1 00/10] Add Stack Smashing Protection and Object Size Checking Corinna Vinschen
2017-11-06 18:40 ` Yaakov Selkowitz
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