new file mode 100644
@@ -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(ssize_t, 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, getcwd, (char *__buf, size_t __len),
+ (__buf, __len), __buf != 0, __ssp_bos);
+
+__END_DECLS
+
+#endif /* __SSP_FORTIFY_LEVEL > 0 */
+#endif /* _SSP_UNISTD_H_ */
@@ -93,7 +93,9 @@ 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 +172,9 @@ 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 +294,10 @@ 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
@@ -567,4 +573,9 @@ int _EXFUN(unlinkat, (int, const char *, int));
#ifdef __cplusplus
}
#endif
+
+#if __SSP_FORTIFY_LEVEL > 0
+#include <ssp/unistd.h>
+#endif
+
#endif /* _SYS_UNISTD_H */
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> --- newlib/libc/include/ssp/unistd.h | 53 ++++++++++++++++++++++++++++++++++++++++ newlib/libc/include/sys/unistd.h | 11 +++++++++ 2 files changed, 64 insertions(+) create mode 100644 newlib/libc/include/ssp/unistd.h -- 2.15.0