* Added some padding to the sem_t structure.

* Changed the semantics of unnamed semaphores. Before parent and child
  of a fork() would always share an earlier created semaphore. Now we do
  that only, if the "shared" parameter of sem_init() was true. That's
  still not quite the behavior Linux and Solaris have, but should be
  perfectly fine with how reasonable code would use the API.
* There's a global table for shared unnamed semaphores now. ATM a
  semaphore is leaked when no one explicitly destroys it (just as with
  named sems).
* Enforce per-team and global semaphore number limits.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25362 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/posix/semaphore.h

@@ -5,12 +5,14 @@
 #ifndef _SEMAPHORE_H_
 #define _SEMAPHORE_H_
 
+#include <stdint.h>
 #include <sys/cdefs.h>
 #include <time.h>
 
 
 typedef struct {
-	int	id;
+	int32_t	id;
+	int32_t	_padding[3];
 } sem_t;
 
 #define SEM_FAILED	((sem_t*)(long)-1)

headers/private/kernel/syscalls.h

@@ -77,9 +77,9 @@ extern status_t		_kern_get_next_sem_info(team_id team, int32 *cookie,
 extern status_t		_kern_set_sem_owner(sem_id id, team_id proc);
 
 /* POSIX realtime sem syscalls */
-extern status_t		_kern_realtime_sem_open(const char* name, int openFlags,
-						mode_t mode, uint32 semCount, sem_t* userSem,
-						sem_t** _usedUserSem);
+extern status_t		_kern_realtime_sem_open(const char* name,
+						int openFlagsOrShared, mode_t mode, uint32 semCount,
+						sem_t* userSem, sem_t** _usedUserSem);
 extern status_t		_kern_realtime_sem_close(sem_id semID,
 						sem_t** _deleteUserSem);
 extern status_t		_kern_realtime_sem_unlink(const char* name);