Round of cleanups and enhancements. These include (in random order):

o  Introduce private types for use in linux syscalls for two reasons:
   1. establish type independence for ease in porting and,
   2. provide a visual queue as to which syscalls have proper
      prototypes to further cleanup the i386/alpha split.
   Linuxulator types are prefixed by 'l_'. void and char have not
   been "virtualized".

o  Provide dummy functions for all syscalls and remove dummy functions
   or implementations of truely obsolete syscalls.

o  Sanitize the shm*, sem* and msg* syscalls.

o  Make a first attempt to implement the linux_sysctl syscall. At this
   time it only returns one MIB (KERN_VERSION), but most importantly,
   it tells us when we need to add additional sysctls :-)

o  Bump the kenel version up to 2.4.2 (this is not the same as the
   KERN_VERSION MIB, BTW).

o  Implement new syscalls, of which most are specific to i386. Our
   syscall table is now up to date with Linux 2.4.2. Some highlights:
   -  Implement the 32-bit uid_t and gid_t bases syscalls.
   -  Implement a couple of 64-bit file size/offset bases syscalls.

o  Fix or improve numerous syscalls and prototypes.

o  Reduce style(9) violations while I'm here. Especially indentation
   inconsistencies within the same file are addressed. Re-indenting
   did not obfuscate actual changes to the extend that it could not
   be combined.

NOTE: I spend some time testing these changes and found that if there
      were regressions, they were not caused by these changes AFAICT.
      It was observed that installing a RH 7.1 runtime environment
      did make matters worse. Hangs and/or reboots have been observed
      with and without these changes, so when it failed to make life
      better in cases it doesn't look like it made it worse.

1 files changed, 79 insertions, 13 deletions

diff --git a/sys/compat/linux/linux_ipc.h b/sys/compat/linux/linux_ipc.h
index 946d963..d0db461 100644
--- a/sys/compat/linux/linux_ipc.h
+++ b/sys/compat/linux/linux_ipc.h
@@ -31,21 +31,86 @@
 #ifndef _LINUX_IPC_H_
 #define _LINUX_IPC_H_
 
-#ifndef __alpha__
+#ifdef __i386__
 
-#define linux_msgctl_args linux_ipc_args 
-#define linux_msgget_args linux_ipc_args
-#define linux_msgrcv_args linux_ipc_args
-#define linux_msgsnd_args linux_ipc_args
+struct linux_msgctl_args 
+{
+	l_int		msqid;
+	l_int		cmd;
+	struct l_msqid_ds *buf;
+};
 
-#define linux_semctl_args linux_ipc_args
-#define linux_semget_args linux_ipc_args
-#define linux_semop_args linux_ipc_args
+struct linux_msgget_args
+{
+	l_key_t		key;
+	l_int		msgflg;
+};
 
-#define linux_shmat_args linux_ipc_args
-#define linux_shmctl_args linux_ipc_args
-#define linux_shmdt_args linux_ipc_args
-#define linux_shmget_args linux_ipc_args
+struct linux_msgrcv_args
+{
+	l_int		msqid;
+	struct l_msgbuf *msgp;
+	l_size_t	msgsz;
+	l_long		msgtyp;
+	l_int		msgflg;
+};
+
+struct linux_msgsnd_args
+{
+	l_int		msqid;
+	struct l_msgbuf *msgp;
+	l_size_t	msgsz;
+	l_int		msgflg;
+};
+
+struct linux_semctl_args
+{
+	l_int		semid;
+	l_int		semnum;
+	l_int		cmd;
+	union l_semun	arg;
+};
+
+struct linux_semget_args
+{
+	l_key_t		key;
+	l_int		nsems;
+	l_int		semflg;
+};
+
+struct linux_semop_args
+{
+	l_int		semid;
+	struct l_sembuf *tsops;
+	l_uint		nsops;
+};
+
+struct linux_shmat_args
+{
+	l_int		shmid;
+	char		*shmaddr;
+	l_int		shmflg;
+	l_ulong		*raddr;
+};
+
+struct linux_shmctl_args
+{
+	l_int		shmid;
+	l_int		cmd;
+	struct l_shmid_ds *buf;
+};
+
+struct linux_shmdt_args
+{
+	char *shmaddr;
+};
+
+struct linux_shmget_args
+{
+	l_key_t		key;
+	l_size_t	size;
+	l_int		shmflg;
+};
 
 int linux_msgctl __P((struct proc *, struct linux_msgctl_args *));
 int linux_msgget __P((struct proc *, struct linux_msgget_args *));
@@ -60,6 +125,7 @@ int linux_shmat  __P((struct proc *, struct linux_shmat_args *));
 int linux_shmctl __P((struct proc *, struct linux_shmctl_args *));
 int linux_shmdt  __P((struct proc *, struct linux_shmdt_args *));
 int linux_shmget __P((struct proc *, struct linux_shmget_args *));
-#endif	/*!__alpha__*/
+
+#endif	/* __i386__ */
 
 #endif /* _LINUX_IPC_H_ */