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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135// 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 (ulfc@engr.sgi.com) */#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>#include <asm/syscalls.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), FTRUNCATE_LFS);}
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));}