[newlib-cygwin] cygwin: add Object Size Checking to sys/poll.h

[newlib-cygwin] cygwin: add Object Size Checking to sys/poll.h

[Yaakov Selkowitz]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=b3281de25fd8c1d856cc45dfb814593a537bce80

commit b3281de25fd8c1d856cc45dfb814593a537bce80
Author: Yaakov Selkowitz <yselkowi@redhat.com>
Date:   Wed Nov 29 11:38:17 2017 -0600

    cygwin: add Object Size Checking to sys/poll.h
    
    Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>

Diff:
---
 winsup/cygwin/include/ssp/poll.h | 26 ++++++++++++++++++++++++++
 winsup/cygwin/include/sys/poll.h |  4 ++++
 2 files changed, 30 insertions(+)

diff --git a/winsup/cygwin/include/ssp/poll.h b/winsup/cygwin/include/ssp/poll.h
new file mode 100644
index 0000000..831e626
--- /dev/null
+++ b/winsup/cygwin/include/ssp/poll.h
@@ -0,0 +1,26 @@
+#ifndef _SSP_POLL_H_
+#define _SSP_POLL_H_
+
+#include <ssp/ssp.h>
+
+#if __SSP_FORTIFY_LEVEL > 0
+__BEGIN_DECLS
+
+__ssp_decl(int, poll, (struct pollfd *__fds, nfds_t __nfds, int __timeout))
+{
+  __ssp_check (__fds, __nfds * sizeof(*__fds), __ssp_bos);
+  return __ssp_real_poll (__fds, __nfds, __timeout);
+}
+
+#if __GNU_VISIBLE
+__ssp_decl(int, ppoll, (struct pollfd *__fds, nfds_t __nfds, const struct timespec *__timeout_ts, const sigset_t *__sigmask))
+{
+  __ssp_check (__fds, __nfds * sizeof(*__fds), __ssp_bos);
+  return __ssp_real_ppoll (__fds, __nfds, __timeout_ts, __sigmask);
+}
+#endif
+
+__END_DECLS
+
+#endif /* __SSP_FORTIFY_LEVEL > 0 */
+#endif /* _SSP_POLL_H_ */
diff --git a/winsup/cygwin/include/sys/poll.h b/winsup/cygwin/include/sys/poll.h
index 0da4c3f..65822ed 100644
--- a/winsup/cygwin/include/sys/poll.h
+++ b/winsup/cygwin/include/sys/poll.h
@@ -47,4 +47,8 @@ extern int ppoll __P ((struct pollfd *fds, nfds_t nfds,
 
 __END_DECLS
 
+#if __SSP_FORTIFY_LEVEL > 0
+#include <ssp/poll.h>
+#endif
+
 #endif /* _SYS_POLL_H */