LD_PRELOAD stub identified system calls

- stub identifed unimplemented system call
  to return EOPNOTSUPP(95)

Change-Id: I4f4a78717059f224bc695a0d32d4f0417dc46bd4
Signed-off-by: shrinivasan ganapathy <shrinivasanganapathy@gmail.com>

4 files changed, 96 insertions, 0 deletions

diff --git a/vcl-ldpreload/src/libvcl-ldpreload/vcom.c b/vcl-ldpreload/src/libvcl-ldpreload/vcom.c
index e148ce0..3160d1d 100644
--- a/vcl-ldpreload/src/libvcl-ldpreload/vcom.c
+++ b/vcl-ldpreload/src/libvcl-ldpreload/vcom.c
@@ -2899,6 +2899,66 @@ epoll_pwait (int __epfd, struct epoll_event *__events,
   return 0;
 }
 
+/* Poll the file descriptors described by the NFDS structures starting at
+   FDS.  If TIMEOUT is nonzero and not -1, allow TIMEOUT milliseconds for
+   an event to occur; if TIMEOUT is -1, block until an event occurs.
+   Returns the number of file descriptors with events, zero if timed out,
+   or -1 for errors.
+
+   This function is a cancellation point and therefore not marked with
+   __THROW.  */
+int
+vcom_poll (struct pollfd *__fds, nfds_t __nfds, int __timeout)
+{
+  if (vcom_init () != 0)
+    {
+      return -1;
+    }
+
+  return -EOPNOTSUPP;
+}
+
+int
+poll (struct pollfd *__fds, nfds_t __nfds, int __timeout)
+{
+  int rv = 0;
+
+  errno = EOPNOTSUPP;
+  rv = -1;
+  return rv;
+}
+
+#ifdef __USE_GNU
+/* Like poll, but before waiting the threads signal mask is replaced
+   with that specified in the fourth parameter.  For better usability,
+   the timeout value is specified using a TIMESPEC object.
+
+   This function is a cancellation point and therefore not marked with
+   __THROW.  */
+int vcom_ppoll (struct pollfd *__fds, nfds_t __nfds,
+                const struct timespec *__timeout,
+                const __sigset_t *__ss)
+{
+  if (vcom_init () != 0)
+    {
+      return -1;
+    }
+
+  return -EOPNOTSUPP;
+}
+
+int ppoll (struct pollfd *__fds, nfds_t __nfds,
+           const struct timespec *__timeout,
+           const __sigset_t *__ss)
+{
+  int rv = 0;
+
+  errno = EOPNOTSUPP;
+  rv = -1;
+  return rv;
+}
+#endif
+
 void CONSTRUCTOR_ATTRIBUTE vcom_constructor (void);
 
 void DESTRUCTOR_ATTRIBUTE vcom_destructor (void);
diff --git a/vcl-ldpreload/src/libvcl-ldpreload/vcom.h b/vcl-ldpreload/src/libvcl-ldpreload/vcom.h
index 1706c0e..0cb68a3 100644
--- a/vcl-ldpreload/src/libvcl-ldpreload/vcom.h
+++ b/vcl-ldpreload/src/libvcl-ldpreload/vcom.h
@@ -175,6 +175,16 @@ vcom_epoll_pwait (int __epfd, struct epoll_event *__events,
                   int __maxevents, int __timeout,
                   const __sigset_t *__ss);
 
+extern int
+vcom_poll (struct pollfd *__fds, nfds_t __nfds, int __timeout);
+
+#ifdef __USE_GNU
+extern int
+vcom_ppoll (struct pollfd *__fds, nfds_t __nfds,
+            const struct timespec *__timeout,
+            const __sigset_t *__ss);
+#endif
+
 
 #endif /* included_vcom_h */
 
diff --git a/vcl-ldpreload/src/libvcl-ldpreload/vcom_glibc_socket.h b/vcl-ldpreload/src/libvcl-ldpreload/vcom_glibc_socket.h
index 026ba60..ecad24a 100644
--- a/vcl-ldpreload/src/libvcl-ldpreload/vcom_glibc_socket.h
+++ b/vcl-ldpreload/src/libvcl-ldpreload/vcom_glibc_socket.h
@@ -23,6 +23,8 @@
 #include <fcntl.h>
 
 #include <sys/epoll.h>
+#include <poll.h>
+
 /*
  *
  * Generic glibc fd api
@@ -318,6 +320,29 @@ epoll_pwait (int __epfd, struct epoll_event *__events,
              int __maxevents, int __timeout,
              const __sigset_t *__ss);
 
+/* Poll the file descriptors described by the NFDS structures starting at
+   FDS.  If TIMEOUT is nonzero and not -1, allow TIMEOUT milliseconds for
+   an event to occur; if TIMEOUT is -1, block until an event occurs.
+   Returns the number of file descriptors with events, zero if timed out,
+   or -1 for errors.
+
+   This function is a cancellation point and therefore not marked with
+   __THROW.  */
+extern int poll (struct pollfd *__fds, nfds_t __nfds, int __timeout);
+
+#ifdef __USE_GNU
+/* Like poll, but before waiting the threads signal mask is replaced
+   with that specified in the fourth parameter.  For better usability,
+   the timeout value is specified using a TIMESPEC object.
+
+   This function is a cancellation point and therefore not marked with
+   __THROW.  */
+extern int ppoll (struct pollfd *__fds, nfds_t __nfds,
+                  const struct timespec *__timeout,
+                  const __sigset_t *__ss);
+#endif
+
+
 #endif /* included_vcom_glibc_socket_h */
 
 /*
diff --git a/vcl-ldpreload/src/libvcl-ldpreload/vcom_socket.c b/vcl-ldpreload/src/libvcl-ldpreload/vcom_socket.c
index 560cc7f..89c28fe 100644
--- a/vcl-ldpreload/src/libvcl-ldpreload/vcom_socket.c
+++ b/vcl-ldpreload/src/libvcl-ldpreload/vcom_socket.c
@@ -1624,6 +1624,7 @@ vppcom_recvmsg (int __sid, struct msghdr *__message, int __flags)
   int rv = -1;
   /* rv = vppcom_session_read (__sid, (void *) __message->__buf,
      (int)__n); */
+  rv = -EOPNOTSUPP;
   return rv;
 }