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1 | /* $Id: sys_cris.c,v 1.6 2004/03/11 11:38:40 starvik Exp $ |
2 | * | |
3 | * linux/arch/cris/kernel/sys_cris.c | |
4 | * | |
5 | * This file contains various random system calls that | |
6 | * have a non-standard calling sequence on some platforms. | |
7 | * Since we don't have to do any backwards compatibility, our | |
8 | * versions are done in the most "normal" way possible. | |
9 | * | |
10 | */ | |
11 | ||
12 | #include <linux/errno.h> | |
13 | #include <linux/sched.h> | |
14 | #include <linux/syscalls.h> | |
15 | #include <linux/mm.h> | |
5978e791 | 16 | #include <linux/fs.h> |
1da177e4 | 17 | #include <linux/smp.h> |
1da177e4 LT |
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> | |
cba4fbbf | 24 | #include <linux/ipc.h> |
1da177e4 LT |
25 | |
26 | #include <asm/uaccess.h> | |
1da177e4 LT |
27 | #include <asm/segment.h> |
28 | ||
1da177e4 LT |
29 | asmlinkage unsigned long old_mmap(unsigned long __user *args) |
30 | { | |
31 | unsigned long buffer[6]; | |
32 | int err = -EFAULT; | |
33 | ||
34 | if (copy_from_user(&buffer, args, sizeof(buffer))) | |
35 | goto out; | |
36 | ||
37 | err = -EINVAL; | |
38 | if (buffer[5] & ~PAGE_MASK) /* verify that offset is on page boundary */ | |
39 | goto out; | |
40 | ||
f8b72560 | 41 | err = sys_mmap_pgoff(buffer[0], buffer[1], buffer[2], buffer[3], |
1da177e4 LT |
42 | buffer[4], buffer[5] >> PAGE_SHIFT); |
43 | out: | |
44 | return err; | |
45 | } | |
46 | ||
47 | asmlinkage long | |
48 | sys_mmap2(unsigned long addr, unsigned long len, unsigned long prot, | |
49 | unsigned long flags, unsigned long fd, unsigned long pgoff) | |
50 | { | |
f8b72560 AV |
51 | /* bug(?): 8Kb pages here */ |
52 | return sys_mmap_pgoff(addr, len, prot, flags, fd, pgoff); | |
1da177e4 LT |
53 | } |
54 | ||
55 | /* | |
56 | * sys_ipc() is the de-multiplexer for the SysV IPC calls.. | |
57 | * | |
58 | * This is really horribly ugly. (same as arch/i386) | |
59 | */ | |
60 | ||
61 | asmlinkage int sys_ipc (uint call, int first, int second, | |
62 | int third, void __user *ptr, long fifth) | |
63 | { | |
64 | int version, ret; | |
65 | ||
66 | version = call >> 16; /* hack for backward compatibility */ | |
67 | call &= 0xffff; | |
68 | ||
69 | switch (call) { | |
70 | case SEMOP: | |
71 | return sys_semtimedop (first, (struct sembuf __user *)ptr, second, NULL); | |
72 | case SEMTIMEDOP: | |
73 | return sys_semtimedop(first, (struct sembuf __user *)ptr, second, | |
74 | (const struct timespec __user *)fifth); | |
75 | ||
76 | case SEMGET: | |
77 | return sys_semget (first, second, third); | |
78 | case SEMCTL: { | |
79 | union semun fourth; | |
80 | if (!ptr) | |
81 | return -EINVAL; | |
82 | if (get_user(fourth.__pad, (void * __user *) ptr)) | |
83 | return -EFAULT; | |
84 | return sys_semctl (first, second, third, fourth); | |
85 | } | |
86 | ||
87 | case MSGSND: | |
88 | return sys_msgsnd (first, (struct msgbuf __user *) ptr, | |
89 | second, third); | |
90 | case MSGRCV: | |
91 | switch (version) { | |
92 | case 0: { | |
93 | struct ipc_kludge tmp; | |
94 | if (!ptr) | |
95 | return -EINVAL; | |
96 | ||
97 | if (copy_from_user(&tmp, | |
98 | (struct ipc_kludge __user *) ptr, | |
99 | sizeof (tmp))) | |
100 | return -EFAULT; | |
101 | return sys_msgrcv (first, tmp.msgp, second, | |
102 | tmp.msgtyp, third); | |
103 | } | |
104 | default: | |
105 | return sys_msgrcv (first, | |
106 | (struct msgbuf __user *) ptr, | |
107 | second, fifth, third); | |
108 | } | |
109 | case MSGGET: | |
110 | return sys_msgget ((key_t) first, second); | |
111 | case MSGCTL: | |
112 | return sys_msgctl (first, second, (struct msqid_ds __user *) ptr); | |
113 | ||
114 | case SHMAT: { | |
115 | ulong raddr; | |
116 | ret = do_shmat (first, (char __user *) ptr, second, &raddr); | |
117 | if (ret) | |
118 | return ret; | |
119 | return put_user (raddr, (ulong __user *) third); | |
120 | } | |
121 | case SHMDT: | |
122 | return sys_shmdt ((char __user *)ptr); | |
123 | case SHMGET: | |
124 | return sys_shmget (first, second, third); | |
125 | case SHMCTL: | |
126 | return sys_shmctl (first, second, | |
127 | (struct shmid_ds __user *) ptr); | |
128 | default: | |
129 | return -ENOSYS; | |
130 | } | |
131 | } |