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* [newlib-cygwin] ssp: add Object Size Checking for unistd.h, part 1
@ 2017-11-29 17:27 Yaakov Selkowitz
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From: Yaakov Selkowitz @ 2017-11-29 17:27 UTC (permalink / raw)
To: newlib-cvs
https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=6b02865d80f6a38caff78e9bff5c866ac0d6dff6
commit 6b02865d80f6a38caff78e9bff5c866ac0d6dff6
Author: Yaakov Selkowitz <yselkowi@redhat.com>
Date: Mon Nov 27 23:49:18 2017 -0600
ssp: add Object Size Checking for unistd.h, part 1
The implementation is from NetBSD, with the addition of feature test macros
for readlink. glibc also wraps the following functions:
confstr, getdomainname, getgroups, gethostname, getlogin_r, getwd, pread,
readlinkat, ttyname_r.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
Diff:
---
newlib/libc/include/ssp/unistd.h | 53 ++++++++++++++++++++++++++++++++++++++++
newlib/libc/include/sys/unistd.h | 5 ++++
2 files changed, 58 insertions(+)
diff --git a/newlib/libc/include/ssp/unistd.h b/newlib/libc/include/ssp/unistd.h
new file mode 100644
index 0000000..861edd3
--- /dev/null
+++ b/newlib/libc/include/ssp/unistd.h
@@ -0,0 +1,53 @@
+/* $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(_READ_WRITE_RETURN_TYPE, read, \
+ (int __fd, void *__buf, size_t __len), (__fd, __buf, __len));
+
+#if __BSD_VISIBLE || __POSIX_VISIBLE >= 200112 || __XSI_VISIBLE >= 4
+__ssp_redirect(ssize_t, readlink, (const char *__restrict __path, \
+ char *__restrict __buf, size_t __len), (__path, __buf, __len));
+#endif
+
+__ssp_redirect_raw(char *, 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 75f8a51..0df4dc3 100644
--- a/newlib/libc/include/sys/unistd.h
+++ b/newlib/libc/include/sys/unistd.h
@@ -567,4 +567,9 @@ int _EXFUN(unlinkat, (int, const char *, int));
#ifdef __cplusplus
}
#endif
+
+#if __SSP_FORTIFY_LEVEL > 0
+#include <ssp/unistd.h>
+#endif
+
#endif /* _SYS_UNISTD_H */
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