patch-2.1.53 linux/arch/sparc64/solaris/ipc.c

• Lines: 123
• Date: Thu Sep 4 12:54:48 1997
• Orig file: v2.1.52/linux/arch/sparc64/solaris/ipc.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.52/linux/arch/sparc64/solaris/ipc.c linux/arch/sparc64/solaris/ipc.c
@@ -0,0 +1,122 @@
+/* $Id: ipc.c,v 1.1 1997/09/03 12:29:29 jj Exp $
+ * ipc.c: Solaris IPC emulation
+ *
+ * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ */
+
+#include <linux/types.h>
+#include <linux/smp_lock.h>
+#include <linux/shm.h>
+#include <linux/sem.h>
+#include <linux/msg.h>
+
+#include <asm/uaccess.h>
+#include <asm/string.h>
+#include <asm/ipc.h>
+
+#include "conv.h"
+
+struct solaris_ipc_perm {
+	s32	uid;
+	s32	gid;
+	s32	cuid;
+	s32	cgid;
+	u32	mode;
+	u32	seq;
+	int	key;
+	s32	pad[4];
+};
+
+struct solaris_shmid_ds {
+	struct solaris_ipc_perm	shm_perm;
+	int			shm_segsz;
+	u32			shm_amp;
+	unsigned short		shm_lkcnt;
+	char			__padxx[2];
+	s32			shm_lpid;
+	s32			shm_cpid;
+	u32			shm_nattch;
+	u32			shm_cnattch;
+	s32			shm_atime;
+	s32			shm_pad1;
+	s32			shm_dtime;
+	s32			shm_pad2;
+	s32			shm_ctime;
+	s32			shm_pad3;
+	unsigned short		shm_cv;
+	char			shm_pad4[2];
+	u32			shm_sptas;
+	s32			shm_pad5[2];
+};
+
+asmlinkage long solaris_shmsys(int cmd, u32 arg1, u32 arg2, u32 arg3)
+{
+	int (*sys_ipc)(unsigned,int,int,unsigned long,void *,long) = 
+		(int (*)(unsigned,int,int,unsigned long,void *,long))SYS(ipc);
+	unsigned long old_fs;
+	unsigned long raddr;
+	int ret;
+		
+	switch (cmd) {
+	case 0: /* shmat */
+		old_fs = get_fs();
+		set_fs(KERNEL_DS);
+		ret = sys_ipc(SHMAT, arg1, arg3 & ~0x4000, (unsigned long)&raddr, (void *)A(arg2), 0);
+		set_fs(old_fs);
+		if (ret >= 0) return (u32)raddr;
+		else return ret;
+	case 1: /* shmctl */
+		switch (arg2) {
+		case 3: /* SHM_LOCK */
+		case 4: /* SHM_UNLOCK */
+			return sys_ipc(SHMCTL, arg1, (arg2 == 3) ? SHM_LOCK : SHM_UNLOCK, 0, NULL, 0);
+		case 10: /* IPC_RMID */
+			return sys_ipc(SHMCTL, arg1, IPC_RMID, 0, NULL, 0);
+		case 11: /* IPC_SET */
+			{
+				struct shmid_ds s;
+				
+				if (get_user (s.shm_perm.uid, &(((struct solaris_shmid_ds *)A(arg3))->shm_perm.uid)) ||
+				    __get_user (s.shm_perm.gid, &(((struct solaris_shmid_ds *)A(arg3))->shm_perm.gid)) || 
+				    __get_user (s.shm_perm.mode, &(((struct solaris_shmid_ds *)A(arg3))->shm_perm.mode)))
+					return -EFAULT;
+				old_fs = get_fs();
+				set_fs(KERNEL_DS);
+				ret = sys_ipc(SHMCTL, arg1, IPC_SET, 0, &s, 0);
+				set_fs(old_fs);
+				return ret;
+			}
+		case 12: /* IPC_STAT */
+			{
+				struct shmid_ds s;
+				
+				old_fs = get_fs();
+				set_fs(KERNEL_DS);
+				ret = sys_ipc(SHMCTL, arg1, IPC_SET, 0, &s, 0);
+				set_fs(old_fs);
+				if (get_user (s.shm_perm.uid, &(((struct solaris_shmid_ds *)A(arg3))->shm_perm.uid)) ||
+				    __get_user (s.shm_perm.gid, &(((struct solaris_shmid_ds *)A(arg3))->shm_perm.gid)) || 
+				    __get_user (s.shm_perm.cuid, &(((struct solaris_shmid_ds *)A(arg3))->shm_perm.cuid)) ||
+				    __get_user (s.shm_perm.cgid, &(((struct solaris_shmid_ds *)A(arg3))->shm_perm.cgid)) || 
+				    __get_user (s.shm_perm.mode, &(((struct solaris_shmid_ds *)A(arg3))->shm_perm.mode)) ||
+				    __get_user (s.shm_perm.seq, &(((struct solaris_shmid_ds *)A(arg3))->shm_perm.seq)) ||
+				    __get_user (s.shm_perm.key, &(((struct solaris_shmid_ds *)A(arg3))->shm_perm.key)) ||
+				    __get_user (s.shm_segsz, &(((struct solaris_shmid_ds *)A(arg3))->shm_segsz)) ||
+				    __get_user (s.shm_lpid, &(((struct solaris_shmid_ds *)A(arg3))->shm_lpid)) ||
+				    __get_user (s.shm_cpid, &(((struct solaris_shmid_ds *)A(arg3))->shm_cpid)) ||
+				    __get_user (s.shm_nattch, &(((struct solaris_shmid_ds *)A(arg3))->shm_nattch)) ||
+				    __get_user (s.shm_atime, &(((struct solaris_shmid_ds *)A(arg3))->shm_atime)) ||
+				    __get_user (s.shm_dtime, &(((struct solaris_shmid_ds *)A(arg3))->shm_dtime)) ||
+				    __get_user (s.shm_ctime, &(((struct solaris_shmid_ds *)A(arg3))->shm_ctime)))
+					return -EFAULT;
+				return ret;
+			}
+		default: return -EINVAL;
+		}
+	case 2: /* shmdt */
+		return sys_ipc(SHMDT, 0, 0, 0, (void *)A(arg1), 0);
+	case 3: /* shmget */
+		return sys_ipc(SHMGET, arg1, arg2, arg3, NULL, 0);
+	}
+	return -EINVAL;
+}