1 /* sys_frv.c: FRV arch-specific syscall wrappers
3 * Copyright (C) 2003-5 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
5 * - Derived from arch/m68k/kernel/sys_m68k.c
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version
10 * 2 of the License, or (at your option) any later version.
13 #include <linux/errno.h>
14 #include <linux/sched.h>
17 #include <linux/smp.h>
18 #include <linux/sem.h>
19 #include <linux/msg.h>
20 #include <linux/shm.h>
21 #include <linux/stat.h>
22 #include <linux/mman.h>
23 #include <linux/file.h>
24 #include <linux/utsname.h>
25 #include <linux/syscalls.h>
26 #include <linux/ipc.h>
28 #include <asm/setup.h>
29 #include <asm/uaccess.h>
31 asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
32 unsigned long prot, unsigned long flags,
33 unsigned long fd, unsigned long pgoff)
36 struct file * file = NULL;
38 flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
39 if (!(flags & MAP_ANONYMOUS)) {
45 /* As with sparc32, make sure the shift for mmap2 is constant
46 (12), no matter what PAGE_SIZE we have.... */
48 /* But unlike sparc32, don't just silently break if we're
49 trying to map something we can't */
50 if (pgoff & ((1<<(PAGE_SHIFT-12))-1))
53 pgoff >>= (PAGE_SHIFT - 12);
55 down_write(¤t->mm->mmap_sem);
56 error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
57 up_write(¤t->mm->mmap_sem);
65 #if 0 /* DAVIDM - do we want this */
66 struct mmap_arg_struct64 {
71 __u64 offset; /* 64 bits */
75 asmlinkage long sys_mmap64(struct mmap_arg_struct64 *arg)
78 struct file * file = NULL;
79 struct mmap_arg_struct64 a;
82 if (copy_from_user(&a, arg, sizeof(a)))
85 if ((long)a.offset & ~PAGE_MASK)
88 pgoff = a.offset >> PAGE_SHIFT;
89 if ((a.offset >> PAGE_SHIFT) != pgoff)
92 if (!(a.flags & MAP_ANONYMOUS)) {
98 a.flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
100 down_write(¤t->mm->mmap_sem);
101 error = do_mmap_pgoff(file, a.addr, a.len, a.prot, a.flags, pgoff);
102 up_write(¤t->mm->mmap_sem);
111 * sys_ipc() is the de-multiplexer for the SysV IPC calls..
113 * This is really horribly ugly.
115 asmlinkage long sys_ipc(unsigned long call,
117 unsigned long second,
124 version = call >> 16; /* hack for backward compatibility */
129 return sys_semtimedop(first, (struct sembuf __user *)ptr, second, NULL);
131 return sys_semtimedop(first, (struct sembuf __user *)ptr, second,
132 (const struct timespec __user *)fifth);
135 return sys_semget (first, second, third);
140 if (get_user(fourth.__pad, (void * __user *) ptr))
142 return sys_semctl (first, second, third, fourth);
146 return sys_msgsnd (first, (struct msgbuf __user *) ptr,
151 struct ipc_kludge tmp;
155 if (copy_from_user(&tmp,
156 (struct ipc_kludge __user *) ptr,
159 return sys_msgrcv (first, tmp.msgp, second,
163 return sys_msgrcv (first,
164 (struct msgbuf __user *) ptr,
165 second, fifth, third);
168 return sys_msgget ((key_t) first, second);
170 return sys_msgctl (first, second, (struct msqid_ds __user *) ptr);
176 ret = do_shmat (first, (char __user *) ptr, second, &raddr);
179 return put_user (raddr, (ulong __user *) third);
181 case 1: /* iBCS2 emulator entry point */
182 if (!segment_eq(get_fs(), get_ds()))
184 /* The "(ulong *) third" is valid _only_ because of the kernel segment thing */
185 return do_shmat (first, (char __user *) ptr, second, (ulong *) third);
188 return sys_shmdt ((char __user *)ptr);
190 return sys_shmget (first, second, third);
192 return sys_shmctl (first, second,
193 (struct shmid_ds __user *) ptr);