Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* sys_frv.c: FRV arch-specific syscall wrappers |
| 2 | * |
| 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 |
| 6 | * |
| 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. |
| 11 | */ |
| 12 | |
| 13 | #include <linux/errno.h> |
| 14 | #include <linux/sched.h> |
| 15 | #include <linux/mm.h> |
Alexey Dobriyan | 4e950f6 | 2007-07-30 02:36:13 +0400 | [diff] [blame] | 16 | #include <linux/fs.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | #include <linux/smp.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | #include <linux/syscalls.h> |
Adrian Bunk | cba4fbb | 2007-10-16 23:29:24 -0700 | [diff] [blame] | 25 | #include <linux/ipc.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | |
| 27 | #include <asm/setup.h> |
| 28 | #include <asm/uaccess.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | asmlinkage long sys_mmap2(unsigned long addr, unsigned long len, |
| 31 | unsigned long prot, unsigned long flags, |
| 32 | unsigned long fd, unsigned long pgoff) |
| 33 | { |
David Howells | 4280e31 | 2008-12-01 13:14:00 -0800 | [diff] [blame] | 34 | /* As with sparc32, make sure the shift for mmap2 is constant |
| 35 | (12), no matter what PAGE_SIZE we have.... */ |
| 36 | |
| 37 | /* But unlike sparc32, don't just silently break if we're |
| 38 | trying to map something we can't */ |
| 39 | if (pgoff & ((1 << (PAGE_SHIFT - 12)) - 1)) |
| 40 | return -EINVAL; |
David Howells | 4280e31 | 2008-12-01 13:14:00 -0800 | [diff] [blame] | 41 | |
Al Viro | f8b7256 | 2009-11-30 17:37:04 -0500 | [diff] [blame] | 42 | return sys_mmap_pgoff(addr, len, prot, flags, fd, |
| 43 | pgoff >> (PAGE_SHIFT - 12)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | } |
| 45 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | /* |
| 47 | * sys_ipc() is the de-multiplexer for the SysV IPC calls.. |
| 48 | * |
| 49 | * This is really horribly ugly. |
| 50 | */ |
| 51 | asmlinkage long sys_ipc(unsigned long call, |
| 52 | unsigned long first, |
| 53 | unsigned long second, |
| 54 | unsigned long third, |
| 55 | void __user *ptr, |
| 56 | unsigned long fifth) |
| 57 | { |
| 58 | int version, ret; |
| 59 | |
| 60 | version = call >> 16; /* hack for backward compatibility */ |
| 61 | call &= 0xffff; |
| 62 | |
| 63 | switch (call) { |
| 64 | case SEMOP: |
| 65 | return sys_semtimedop(first, (struct sembuf __user *)ptr, second, NULL); |
| 66 | case SEMTIMEDOP: |
| 67 | return sys_semtimedop(first, (struct sembuf __user *)ptr, second, |
| 68 | (const struct timespec __user *)fifth); |
| 69 | |
| 70 | case SEMGET: |
| 71 | return sys_semget (first, second, third); |
| 72 | case SEMCTL: { |
| 73 | union semun fourth; |
| 74 | if (!ptr) |
| 75 | return -EINVAL; |
| 76 | if (get_user(fourth.__pad, (void * __user *) ptr)) |
| 77 | return -EFAULT; |
| 78 | return sys_semctl (first, second, third, fourth); |
| 79 | } |
| 80 | |
| 81 | case MSGSND: |
| 82 | return sys_msgsnd (first, (struct msgbuf __user *) ptr, |
| 83 | second, third); |
| 84 | case MSGRCV: |
| 85 | switch (version) { |
| 86 | case 0: { |
| 87 | struct ipc_kludge tmp; |
| 88 | if (!ptr) |
| 89 | return -EINVAL; |
| 90 | |
| 91 | if (copy_from_user(&tmp, |
| 92 | (struct ipc_kludge __user *) ptr, |
| 93 | sizeof (tmp))) |
| 94 | return -EFAULT; |
| 95 | return sys_msgrcv (first, tmp.msgp, second, |
| 96 | tmp.msgtyp, third); |
| 97 | } |
| 98 | default: |
| 99 | return sys_msgrcv (first, |
| 100 | (struct msgbuf __user *) ptr, |
| 101 | second, fifth, third); |
| 102 | } |
| 103 | case MSGGET: |
| 104 | return sys_msgget ((key_t) first, second); |
| 105 | case MSGCTL: |
| 106 | return sys_msgctl (first, second, (struct msqid_ds __user *) ptr); |
| 107 | |
| 108 | case SHMAT: |
| 109 | switch (version) { |
| 110 | default: { |
| 111 | ulong raddr; |
| 112 | ret = do_shmat (first, (char __user *) ptr, second, &raddr); |
| 113 | if (ret) |
| 114 | return ret; |
| 115 | return put_user (raddr, (ulong __user *) third); |
| 116 | } |
| 117 | case 1: /* iBCS2 emulator entry point */ |
| 118 | if (!segment_eq(get_fs(), get_ds())) |
| 119 | return -EINVAL; |
| 120 | /* The "(ulong *) third" is valid _only_ because of the kernel segment thing */ |
| 121 | return do_shmat (first, (char __user *) ptr, second, (ulong *) third); |
| 122 | } |
| 123 | case SHMDT: |
| 124 | return sys_shmdt ((char __user *)ptr); |
| 125 | case SHMGET: |
| 126 | return sys_shmget (first, second, third); |
| 127 | case SHMCTL: |
| 128 | return sys_shmctl (first, second, |
| 129 | (struct shmid_ds __user *) ptr); |
| 130 | default: |
| 131 | return -ENOSYS; |
| 132 | } |
| 133 | } |