1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
|
// SPDX-License-Identifier: GPL-2.0
#include <linux/errno.h>
#include <linux/sched.h>
#include <linux/sched/task_stack.h>
#include <linux/mm.h>
#include <linux/smp.h>
#include <linux/sem.h>
#include <linux/msg.h>
#include <linux/shm.h>
#include <linux/stat.h>
#include <linux/syscalls.h>
#include <linux/mman.h>
#include <linux/file.h>
#include <linux/module.h>
#include <linux/fs.h>
#include <linux/ipc.h>
#include <asm/cacheflush.h>
#include <linux/uaccess.h>
#include <asm/unistd.h>
#include <asm/syscalls.h>
/*
* sys_pipe() is the normal C calling standard for creating
* a pipe. It's not the way Unix traditionally does this, though.
*/
asmlinkage int sys_sh_pipe(void)
{
int fd[2];
int error;
error = do_pipe_flags(fd, 0);
if (!error) {
current_pt_regs()->regs[1] = fd[1];
return fd[0];
}
return error;
}
asmlinkage ssize_t sys_pread_wrapper(unsigned int fd, char __user *buf,
size_t count, long dummy, loff_t pos)
{
return ksys_pread64(fd, buf, count, pos);
}
asmlinkage ssize_t sys_pwrite_wrapper(unsigned int fd, const char __user *buf,
size_t count, long dummy, loff_t pos)
{
return ksys_pwrite64(fd, buf, count, pos);
}
asmlinkage int sys_fadvise64_64_wrapper(int fd, u32 offset0, u32 offset1,
u32 len0, u32 len1, int advice)
{
#ifdef __LITTLE_ENDIAN__
return ksys_fadvise64_64(fd, (u64)offset1 << 32 | offset0,
(u64)len1 << 32 | len0, advice);
#else
return ksys_fadvise64_64(fd, (u64)offset0 << 32 | offset1,
(u64)len0 << 32 | len1, advice);
#endif
}
/*
* swap the arguments the way that libc wants them instead of
* moving flags ahead of the 64-bit nbytes argument
*/
SYSCALL_DEFINE6(sh_sync_file_range6, int, fd, SC_ARG64(offset),
SC_ARG64(nbytes), unsigned int, flags)
{
return ksys_sync_file_range(fd, SC_VAL64(loff_t, offset),
SC_VAL64(loff_t, nbytes), flags);
}
|
