Add infrastructure to support poll()

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1258 42af7a65-404d-4744-a932-0658087f49c3

2 files changed, 11 insertions, 0 deletions

diff --git a/nuttx/include/nuttx/fs.h b/nuttx/include/nuttx/fs.h
index 946c60589..65e033208 100644
--- a/nuttx/include/nuttx/fs.h
+++ b/nuttx/include/nuttx/fs.h
@@ -57,6 +57,8 @@
  */
 
 struct file;
+struct pollfd;
+
 struct file_operations
 {
   /* The device driver open method differs from the mountpoint open method */
@@ -73,6 +75,7 @@ struct file_operations
   ssize_t (*write)(FAR struct file *filp, FAR const char *buffer, size_t buflen);
   off_t   (*seek)(FAR struct file *filp, off_t offset, int whence);
   int     (*ioctl)(FAR struct file *filp, int cmd, unsigned long arg);
+  int     (*poll)(FAR struct file *filp, struct pollfd *poll);
 
   /* The two structures need not be common after this point */
 };
diff --git a/nuttx/include/nuttx/net.h b/nuttx/include/nuttx/net.h
index d4d7ec754..5126e7b65 100644
--- a/nuttx/include/nuttx/net.h
+++ b/nuttx/include/nuttx/net.h
@@ -153,6 +153,14 @@ EXTERN int net_close(int sockfd);
 struct ifreq; /* Forward reference -- see net/ioctls.h */
 EXTERN int netdev_ioctl(int sockfd, int cmd, struct ifreq *req);
 
+/* net-poll.c ****************************************************************/
+/* The standard poll() operation redirects operations on socket descriptors
+ * to this function.
+ */
+
+struct pollfd; /* Forward reference -- see poll.h */
+EXTERN int net_poll(int sockfd, struct pollfd *fds);
+
 /* netdev-register.c *********************************************************/
 /* This function is called by network interface device drivers to inform the
  * socket layer of their existence.  This registration is necesary to support