2 * linux/arch/sh/kernel/sys_sh.c
4 * This file contains various random system calls that
5 * have a non-standard calling sequence on the Linux/SuperH
8 * Taken from i386 version.
10 #include <linux/errno.h>
11 #include <linux/sched.h>
13 #include <linux/smp.h>
14 #include <linux/sem.h>
15 #include <linux/msg.h>
16 #include <linux/shm.h>
17 #include <linux/stat.h>
18 #include <linux/syscalls.h>
19 #include <linux/mman.h>
20 #include <linux/file.h>
21 #include <linux/utsname.h>
22 #include <linux/module.h>
24 #include <linux/ipc.h>
25 #include <asm/syscalls.h>
26 #include <asm/uaccess.h>
27 #include <asm/unistd.h>
30 do_mmap2(unsigned long addr
, unsigned long len
, unsigned long prot
,
31 unsigned long flags
, int fd
, unsigned long pgoff
)
34 struct file
*file
= NULL
;
36 flags
&= ~(MAP_EXECUTABLE
| MAP_DENYWRITE
);
37 if (!(flags
& MAP_ANONYMOUS
)) {
43 down_write(¤t
->mm
->mmap_sem
);
44 error
= do_mmap_pgoff(file
, addr
, len
, prot
, flags
, pgoff
);
45 up_write(¤t
->mm
->mmap_sem
);
53 asmlinkage
int old_mmap(unsigned long addr
, unsigned long len
,
54 unsigned long prot
, unsigned long flags
,
55 int fd
, unsigned long off
)
59 return do_mmap2(addr
, len
, prot
, flags
, fd
, off
>>PAGE_SHIFT
);
62 asmlinkage
long sys_mmap2(unsigned long addr
, unsigned long len
,
63 unsigned long prot
, unsigned long flags
,
64 unsigned long fd
, unsigned long pgoff
)
66 return do_mmap2(addr
, len
, prot
, flags
, fd
, pgoff
);
70 * sys_ipc() is the de-multiplexer for the SysV IPC calls..
72 * This is really horribly ugly.
74 asmlinkage
int sys_ipc(uint call
, int first
, int second
,
75 int third
, void __user
*ptr
, long fifth
)
79 version
= call
>> 16; /* hack for backward compatibility */
82 trace_mark(kernel_arch_ipc_call
, "call %u first %d", call
, first
);
84 if (call
<= SEMTIMEDOP
)
87 return sys_semtimedop(first
,
88 (struct sembuf __user
*)ptr
,
91 return sys_semtimedop(first
,
92 (struct sembuf __user
*)ptr
, second
,
93 (const struct timespec __user
*)fifth
);
95 return sys_semget (first
, second
, third
);
100 if (get_user(fourth
.__pad
, (void __user
* __user
*) ptr
))
102 return sys_semctl (first
, second
, third
, fourth
);
111 return sys_msgsnd (first
, (struct msgbuf __user
*) ptr
,
117 struct ipc_kludge tmp
;
122 if (copy_from_user(&tmp
,
123 (struct ipc_kludge __user
*) ptr
,
127 return sys_msgrcv (first
, tmp
.msgp
, second
,
131 return sys_msgrcv (first
,
132 (struct msgbuf __user
*) ptr
,
133 second
, fifth
, third
);
136 return sys_msgget ((key_t
) first
, second
);
138 return sys_msgctl (first
, second
,
139 (struct msqid_ds __user
*) ptr
);
149 ret
= do_shmat (first
, (char __user
*) ptr
,
153 return put_user (raddr
, (ulong __user
*) third
);
155 case 1: /* iBCS2 emulator entry point */
156 if (!segment_eq(get_fs(), get_ds()))
158 return do_shmat (first
, (char __user
*) ptr
,
159 second
, (ulong
*) third
);
162 return sys_shmdt ((char __user
*)ptr
);
164 return sys_shmget (first
, second
, third
);
166 return sys_shmctl (first
, second
,
167 (struct shmid_ds __user
*) ptr
);
175 asmlinkage
int sys_uname(struct old_utsname __user
*name
)
181 err
= copy_to_user(name
, utsname(), sizeof(*name
));
183 return err
?-EFAULT
:0;