POSIX: introduce ppoll

will appear in the next version: https://www.opengroup.org/austin/docs/austin_1110.pdf

Change-Id: I38014ad910881df260f0ec762831491e143328c4
Reviewed-on: https://review.haiku-os.org/c/haiku/+/4099
Tested-by: Commit checker robot <[email protected]>
Reviewed-by: Adrien Destugues <[email protected]>

headers/posix/poll.h

@@ -6,6 +6,10 @@
 #define _POLL_H
 
 
+#include <signal.h>
+#include <sys/time.h>
+
+
 typedef unsigned long nfds_t;
 
 struct pollfd {
@@ -29,10 +33,18 @@ struct pollfd {
 #define	POLLNVAL	0x1000		/* invalid file descriptor */
 
 
-extern
 #ifdef __cplusplus
-"C"
+extern "C" {
 #endif
-int poll(struct pollfd *fds, nfds_t numfds, int timeout);
+
+extern int poll(struct pollfd *fds, nfds_t numfds, int timeout);
+extern int ppoll(struct pollfd *fds, nfds_t numfds,
+	const struct timespec *timeout, const sigset_t *sigMask);
+
+#ifdef __cplusplus
+}
+#endif
+
+
 
 #endif /* _POLL_H */

headers/private/kernel/vfs.h

@@ -211,7 +211,8 @@ status_t	_user_access(int fd, const char *path, int mode,
 				bool effectiveUserGroup);
 ssize_t		_user_select(int numfds, fd_set *readSet, fd_set *writeSet,
 				fd_set *errorSet, bigtime_t timeout, const sigset_t *sigMask);
-ssize_t		_user_poll(struct pollfd *fds, int numfds, bigtime_t timeout);
+ssize_t		_user_poll(struct pollfd *fds, int numfds, bigtime_t timeout,
+				const sigset_t *sigMask);
 int			_user_open_attr_dir(int fd, const char *path,
 				bool traverseLeafLink);
 ssize_t		_user_read_attr(int fd, const char *attribute, off_t pos,

headers/private/system/syscalls.h

@@ -286,7 +286,7 @@ extern ssize_t		_kern_select(int numfds, struct fd_set *readSet,
 						struct fd_set *writeSet, struct fd_set *errorSet,
 						bigtime_t timeout, const sigset_t *sigMask);
 extern ssize_t		_kern_poll(struct pollfd *fds, int numFDs,
-						bigtime_t timeout);
+						bigtime_t timeout, const sigset_t *sigMask);
 
 extern int			_kern_open_attr_dir(int fd, const char *path,
 						bool traverseLeafLink);