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