1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/errno.h>
3 #include <linux/sched.h>
4 #include <linux/sched/task_stack.h>
5 #include <linux/mm.h>
6 #include <linux/smp.h>
7 #include <linux/sem.h>
8 #include <linux/msg.h>
9 #include <linux/shm.h>
10 #include <linux/stat.h>
11 #include <linux/syscalls.h>
12 #include <linux/mman.h>
13 #include <linux/file.h>
14 #include <linux/module.h>
15 #include <linux/fs.h>
16 #include <linux/ipc.h>
17 #include <asm/cacheflush.h>
18 #include <linux/uaccess.h>
19 #include <asm/unistd.h>
20 #include <asm/syscalls.h>
21
22 /*
23 * sys_pipe() is the normal C calling standard for creating
24 * a pipe. It's not the way Unix traditionally does this, though.
25 */
26 asmlinkage int sys_sh_pipe(void)
27 {
28 int fd[2];
29 int error;
30
31 error = do_pipe_flags(fd, 0);
32 if (!error) {
33 current_pt_regs()->regs[1] = fd[1];
34 return fd[0];
35 }
36 return error;
37 }
38
39 asmlinkage ssize_t sys_pread_wrapper(unsigned int fd, char __user *buf,
40 size_t count, long dummy, loff_t pos)
41 {
42 return ksys_pread64(fd, buf, count, pos);
43 }
44
45 asmlinkage ssize_t sys_pwrite_wrapper(unsigned int fd, const char __user *buf,
46 size_t count, long dummy, loff_t pos)
47 {
48 return ksys_pwrite64(fd, buf, count, pos);
49 }
50
51 asmlinkage int sys_fadvise64_64_wrapper(int fd, u32 offset0, u32 offset1,
52 u32 len0, u32 len1, int advice)
53 {
54 #ifdef __LITTLE_ENDIAN__
55 return ksys_fadvise64_64(fd, (u64)offset1 << 32 | offset0,
56 (u64)len1 << 32 | len0, advice);
57 #else
58 return ksys_fadvise64_64(fd, (u64)offset0 << 32 | offset1,
59 (u64)len0 << 32 | len1, advice);
60 #endif
61 }
62
63 /*
64 * swap the arguments the way that libc wants them instead of
65 * moving flags ahead of the 64-bit nbytes argument
66 */
67 SYSCALL_DEFINE6(sh_sync_file_range6, int, fd, SC_ARG64(offset),
68 SC_ARG64(nbytes), unsigned int, flags)
69 {
70 return ksys_sync_file_range(fd, SC_VAL64(loff_t, offset),
71 SC_VAL64(loff_t, nbytes), flags);
72 }
73
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