--- a/epoc32/include/stdapis/sys/sem.h	Tue Nov 24 13:55:44 2009 +0000
+++ b/epoc32/include/stdapis/sys/sem.h	Tue Mar 16 16:12:26 2010 +0000
@@ -1,1 +1,165 @@
-sem.h
+/* $FreeBSD: src/sys/sys/sem.h,v 1.29 2004/11/17 13:12:06 rwatson Exp $ */
+/*	$NetBSD: sem.h,v 1.5 1994/06/29 06:45:15 cgd Exp $	*/
+
+/*
+ *© Portions copyright (c) 2006 Nokia Corporation.  All rights reserved.
+ *© Portions copyright (c) 2006 Symbian Software Ltd. All rights reserved.
+ * SVID compatible sem.h file
+ *
+ * Author:  Daniel Boulet
+ */
+
+#ifndef _SYS_SEM_H_
+#define _SYS_SEM_H_
+
+#include <sys/ipc.h>
+
+
+struct sem {
+	u_short	semval;		/* semaphore value */
+	pid_t	sempid;		/* process ID of last operation */
+	u_short	semncnt;	/* number of processes waiting for semval
+                           to become greater than current value */
+	u_short	semzcnt;	/* number of processes waiting for semval
+                           to become 0 */
+    };
+
+struct semid_ds {
+	struct ipc_perm	sem_perm;	/* operation permission struct */
+	struct sem	*sem_base;	/* pointer to first semaphore in set */
+	unsigned short	sem_nsems;	/* number of sems in set */
+	time_t		sem_otime;	/* last operation time */
+	long		sem_pad1;	/* SVABI/386 says I need this here */
+	time_t		sem_ctime;	/* last change time */
+    					/* Times measured in secs since */
+    					/* 00:00:00 GMT, Jan. 1, 1970 */
+	long		sem_pad2;	/* SVABI/386 says I need this here */
+	long		sem_pad3[4];	/* SVABI/386 says I need this here */
+};
+
+/*
+ * semop's sops parameter structure
+ */
+struct sembuf {
+	unsigned short	sem_num;	/* semaphore # */
+	short		sem_op;		/* semaphore operation */
+	short		sem_flg;	/* operation flags */
+};
+#define SEM_UNDO	010000
+
+/*
+ * semctl's arg parameter structure
+ */
+union semun {
+	int		val;		/* value for SETVAL */
+	struct		semid_ds *buf;	/* buffer for IPC_STAT & IPC_SET */
+	unsigned short	*array;		/* array for GETALL & SETALL */
+};
+
+/*
+ * commands for semctl
+ */
+#define GETNCNT	3	/* Return the value of semncnt {READ} */
+#define GETPID	4	/* Return the value of sempid {READ} */
+#define GETVAL	5	/* Return the value of semval {READ} */
+#define GETALL	6	/* Return semvals into arg.array {READ} */
+#define GETZCNT	7	/* Return the value of semzcnt {READ} */
+#define SETVAL	8	/* Set the value of semval to arg.val {ALTER} */
+#define SETALL	9	/* Set semvals from arg.array {ALTER} */
+#define SEM_STAT 10	/* Like IPC_STAT but treats semid as sema-index */
+#define SEM_INFO 11	/* Like IPC_INFO but treats semid as sema-index */
+
+/*
+ * Permissions
+ */
+#define SEM_A		IPC_W	/* alter permission */
+#define SEM_R		IPC_R	/* read permission */
+
+#ifdef _KERNEL
+
+/*
+ * semaphore info struct
+ */
+struct seminfo {
+	int	semmap,		/* # of entries in semaphore map */
+		semmni,		/* # of semaphore identifiers */
+		semmns,		/* # of semaphores in system */
+		semmnu,		/* # of undo structures in system */
+		semmsl,		/* max # of semaphores per id */
+		semopm,		/* max # of operations per semop call */
+		semume,		/* max # of undo entries per process */
+		semusz,		/* size in bytes of undo structure */
+		semvmx,		/* semaphore maximum value */
+		semaem;		/* adjust on exit max value */
+};
+extern struct seminfo	seminfo;
+
+/*
+ * Kernel wrapper for the user-level structure
+ */
+struct semid_kernel {
+	struct	semid_ds u;
+	struct	label *label;	/* MAC framework label */
+};
+
+/* internal "mode" bits */
+#define	SEM_ALLOC	01000	/* semaphore is allocated */
+#define	SEM_DEST	02000	/* semaphore will be destroyed on last detach */
+
+/*
+ * Process sem_undo vectors at proc exit.
+ */
+void	semexit(struct proc *p);
+#endif /* _KERNEL */
+
+#ifndef _KERNEL
+#include <sys/cdefs.h>
+#include <sys/_types.h>
+
+#ifndef _SIZE_T_DECLARED
+typedef __size_t        size_t;
+#define _SIZE_T_DECLARED
+#endif
+
+#ifndef _PID_T_DECLARED
+typedef __pid_t         pid_t;
+#define _PID_T_DECLARED
+#endif
+
+// FUNCTION PROTOTYPES
+
+
+// FORWARD DECLARATIONS
+
+
+// CLASS/STRUCT/FUNCTION DECLARATION
+
+__BEGIN_DECLS
+
+/*
+* Get semaphore identifier using the IPC key generated by ftok.
+*/
+
+IMPORT_C int semget(key_t key, int nsems, int semflg);
+
+
+/*
+* Perform atomically a user-defined array of semaphore operations on the set of 
+* semaphores associated with the semaphore identifier specified by the argument semid.
+*/
+
+IMPORT_C int semop(int semid, struct sembuf *sops, unsigned nsops);
+
+
+/*
+* Provides a variety of semaphore control operations as specified by cmd.
+*/
+IMPORT_C int semctl(int semid, int semnum, int cmd, ...);
+
+
+__END_DECLS
+#endif // #ifndef _KERNEL
+
+#endif // _SYS_SEM_H_
+
+//  End of File