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- // SPDX-License-Identifier: GPL-2.0
- /*
- * Conversion between 32-bit and 64-bit native system calls.
- *
- * Copyright (C) 2000 Silicon Graphics, Inc.
- * Written by Ulf Carlsson ([email protected])
- */
- #include <linux/compiler.h>
- #include <linux/mm.h>
- #include <linux/errno.h>
- #include <linux/file.h>
- #include <linux/highuid.h>
- #include <linux/resource.h>
- #include <linux/highmem.h>
- #include <linux/time.h>
- #include <linux/times.h>
- #include <linux/poll.h>
- #include <linux/skbuff.h>
- #include <linux/filter.h>
- #include <linux/shm.h>
- #include <linux/sem.h>
- #include <linux/msg.h>
- #include <linux/icmpv6.h>
- #include <linux/syscalls.h>
- #include <linux/sysctl.h>
- #include <linux/utime.h>
- #include <linux/utsname.h>
- #include <linux/personality.h>
- #include <linux/dnotify.h>
- #include <linux/binfmts.h>
- #include <linux/security.h>
- #include <linux/compat.h>
- #include <linux/vfs.h>
- #include <linux/ipc.h>
- #include <linux/slab.h>
- #include <net/sock.h>
- #include <net/scm.h>
- #include <asm/compat-signal.h>
- #include <asm/sim.h>
- #include <linux/uaccess.h>
- #include <asm/mmu_context.h>
- #include <asm/mman.h>
- #ifdef __MIPSEB__
- #define merge_64(r1, r2) ((((r1) & 0xffffffffUL) << 32) + ((r2) & 0xffffffffUL))
- #endif
- #ifdef __MIPSEL__
- #define merge_64(r1, r2) ((((r2) & 0xffffffffUL) << 32) + ((r1) & 0xffffffffUL))
- #endif
- SYSCALL_DEFINE4(32_truncate64, const char __user *, path,
- unsigned long, __dummy, unsigned long, a2, unsigned long, a3)
- {
- return ksys_truncate(path, merge_64(a2, a3));
- }
- SYSCALL_DEFINE4(32_ftruncate64, unsigned long, fd, unsigned long, __dummy,
- unsigned long, a2, unsigned long, a3)
- {
- return ksys_ftruncate(fd, merge_64(a2, a3));
- }
- SYSCALL_DEFINE5(32_llseek, unsigned int, fd, unsigned int, offset_high,
- unsigned int, offset_low, loff_t __user *, result,
- unsigned int, origin)
- {
- return sys_llseek(fd, offset_high, offset_low, result, origin);
- }
- /* From the Single Unix Spec: pread & pwrite act like lseek to pos + op +
- lseek back to original location. They fail just like lseek does on
- non-seekable files. */
- SYSCALL_DEFINE6(32_pread, unsigned long, fd, char __user *, buf, size_t, count,
- unsigned long, unused, unsigned long, a4, unsigned long, a5)
- {
- return ksys_pread64(fd, buf, count, merge_64(a4, a5));
- }
- SYSCALL_DEFINE6(32_pwrite, unsigned int, fd, const char __user *, buf,
- size_t, count, u32, unused, u64, a4, u64, a5)
- {
- return ksys_pwrite64(fd, buf, count, merge_64(a4, a5));
- }
- SYSCALL_DEFINE1(32_personality, unsigned long, personality)
- {
- unsigned int p = personality & 0xffffffff;
- int ret;
- if (personality(current->personality) == PER_LINUX32 &&
- personality(p) == PER_LINUX)
- p = (p & ~PER_MASK) | PER_LINUX32;
- ret = sys_personality(p);
- if (ret != -1 && personality(ret) == PER_LINUX32)
- ret = (ret & ~PER_MASK) | PER_LINUX;
- return ret;
- }
- asmlinkage ssize_t sys32_readahead(int fd, u32 pad0, u64 a2, u64 a3,
- size_t count)
- {
- return ksys_readahead(fd, merge_64(a2, a3), count);
- }
- asmlinkage long sys32_sync_file_range(int fd, int __pad,
- unsigned long a2, unsigned long a3,
- unsigned long a4, unsigned long a5,
- int flags)
- {
- return ksys_sync_file_range(fd,
- merge_64(a2, a3), merge_64(a4, a5),
- flags);
- }
- asmlinkage long sys32_fadvise64_64(int fd, int __pad,
- unsigned long a2, unsigned long a3,
- unsigned long a4, unsigned long a5,
- int flags)
- {
- return ksys_fadvise64_64(fd,
- merge_64(a2, a3), merge_64(a4, a5),
- flags);
- }
- asmlinkage long sys32_fallocate(int fd, int mode, unsigned offset_a2,
- unsigned offset_a3, unsigned len_a4, unsigned len_a5)
- {
- return ksys_fallocate(fd, mode, merge_64(offset_a2, offset_a3),
- merge_64(len_a4, len_a5));
- }
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