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Diffstat (limited to 'arch/s390/kernel/compat_linux.c')
-rw-r--r--arch/s390/kernel/compat_linux.c289
1 files changed, 0 insertions, 289 deletions
diff --git a/arch/s390/kernel/compat_linux.c b/arch/s390/kernel/compat_linux.c
deleted file mode 100644
index f9d418d1b619..000000000000
--- a/arch/s390/kernel/compat_linux.c
+++ /dev/null
@@ -1,289 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * S390 version
- * Copyright IBM Corp. 2000
- * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
- * Gerhard Tonn (ton@de.ibm.com)
- * Thomas Spatzier (tspat@de.ibm.com)
- *
- * Conversion between 31bit and 64bit native syscalls.
- *
- * Heavily inspired by the 32-bit Sparc compat code which is
- * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
- * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
- *
- */
-
-
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/fs.h>
-#include <linux/mm.h>
-#include <linux/file.h>
-#include <linux/signal.h>
-#include <linux/resource.h>
-#include <linux/times.h>
-#include <linux/smp.h>
-#include <linux/sem.h>
-#include <linux/msg.h>
-#include <linux/shm.h>
-#include <linux/uio.h>
-#include <linux/quota.h>
-#include <linux/poll.h>
-#include <linux/personality.h>
-#include <linux/stat.h>
-#include <linux/filter.h>
-#include <linux/highmem.h>
-#include <linux/mman.h>
-#include <linux/ipv6.h>
-#include <linux/in.h>
-#include <linux/icmpv6.h>
-#include <linux/syscalls.h>
-#include <linux/sysctl.h>
-#include <linux/binfmts.h>
-#include <linux/capability.h>
-#include <linux/compat.h>
-#include <linux/vfs.h>
-#include <linux/ptrace.h>
-#include <linux/fadvise.h>
-#include <linux/ipc.h>
-#include <linux/slab.h>
-
-#include <asm/types.h>
-#include <linux/uaccess.h>
-
-#include <net/scm.h>
-#include <net/sock.h>
-
-#include "compat_linux.h"
-
-#ifdef CONFIG_SYSVIPC
-COMPAT_SYSCALL_DEFINE5(s390_ipc, uint, call, int, first, compat_ulong_t, second,
- compat_ulong_t, third, compat_uptr_t, ptr)
-{
- if (call >> 16) /* hack for backward compatibility */
- return -EINVAL;
- return compat_ksys_ipc(call, first, second, third, ptr, third);
-}
-#endif
-
-COMPAT_SYSCALL_DEFINE3(s390_truncate64, const char __user *, path, u32, high, u32, low)
-{
- return ksys_truncate(path, (unsigned long)high << 32 | low);
-}
-
-COMPAT_SYSCALL_DEFINE3(s390_ftruncate64, unsigned int, fd, u32, high, u32, low)
-{
- return ksys_ftruncate(fd, (unsigned long)high << 32 | low);
-}
-
-COMPAT_SYSCALL_DEFINE5(s390_pread64, unsigned int, fd, char __user *, ubuf,
- compat_size_t, count, u32, high, u32, low)
-{
- if ((compat_ssize_t) count < 0)
- return -EINVAL;
- return ksys_pread64(fd, ubuf, count, (unsigned long)high << 32 | low);
-}
-
-COMPAT_SYSCALL_DEFINE5(s390_pwrite64, unsigned int, fd, const char __user *, ubuf,
- compat_size_t, count, u32, high, u32, low)
-{
- if ((compat_ssize_t) count < 0)
- return -EINVAL;
- return ksys_pwrite64(fd, ubuf, count, (unsigned long)high << 32 | low);
-}
-
-COMPAT_SYSCALL_DEFINE4(s390_readahead, int, fd, u32, high, u32, low, s32, count)
-{
- return ksys_readahead(fd, (unsigned long)high << 32 | low, count);
-}
-
-struct stat64_emu31 {
- unsigned long long st_dev;
- unsigned int __pad1;
-#define STAT64_HAS_BROKEN_ST_INO 1
- u32 __st_ino;
- unsigned int st_mode;
- unsigned int st_nlink;
- u32 st_uid;
- u32 st_gid;
- unsigned long long st_rdev;
- unsigned int __pad3;
- long st_size;
- u32 st_blksize;
- unsigned char __pad4[4];
- u32 __pad5; /* future possible st_blocks high bits */
- u32 st_blocks; /* Number 512-byte blocks allocated. */
- u32 st_atime;
- u32 __pad6;
- u32 st_mtime;
- u32 __pad7;
- u32 st_ctime;
- u32 __pad8; /* will be high 32 bits of ctime someday */
- unsigned long st_ino;
-};
-
-static int cp_stat64(struct stat64_emu31 __user *ubuf, struct kstat *stat)
-{
- struct stat64_emu31 tmp;
-
- memset(&tmp, 0, sizeof(tmp));
-
- tmp.st_dev = huge_encode_dev(stat->dev);
- tmp.st_ino = stat->ino;
- tmp.__st_ino = (u32)stat->ino;
- tmp.st_mode = stat->mode;
- tmp.st_nlink = (unsigned int)stat->nlink;
- tmp.st_uid = from_kuid_munged(current_user_ns(), stat->uid);
- tmp.st_gid = from_kgid_munged(current_user_ns(), stat->gid);
- tmp.st_rdev = huge_encode_dev(stat->rdev);
- tmp.st_size = stat->size;
- tmp.st_blksize = (u32)stat->blksize;
- tmp.st_blocks = (u32)stat->blocks;
- tmp.st_atime = (u32)stat->atime.tv_sec;
- tmp.st_mtime = (u32)stat->mtime.tv_sec;
- tmp.st_ctime = (u32)stat->ctime.tv_sec;
-
- return copy_to_user(ubuf,&tmp,sizeof(tmp)) ? -EFAULT : 0;
-}
-
-COMPAT_SYSCALL_DEFINE2(s390_stat64, const char __user *, filename, struct stat64_emu31 __user *, statbuf)
-{
- struct kstat stat;
- int ret = vfs_stat(filename, &stat);
- if (!ret)
- ret = cp_stat64(statbuf, &stat);
- return ret;
-}
-
-COMPAT_SYSCALL_DEFINE2(s390_lstat64, const char __user *, filename, struct stat64_emu31 __user *, statbuf)
-{
- struct kstat stat;
- int ret = vfs_lstat(filename, &stat);
- if (!ret)
- ret = cp_stat64(statbuf, &stat);
- return ret;
-}
-
-COMPAT_SYSCALL_DEFINE2(s390_fstat64, unsigned int, fd, struct stat64_emu31 __user *, statbuf)
-{
- struct kstat stat;
- int ret = vfs_fstat(fd, &stat);
- if (!ret)
- ret = cp_stat64(statbuf, &stat);
- return ret;
-}
-
-COMPAT_SYSCALL_DEFINE4(s390_fstatat64, unsigned int, dfd, const char __user *, filename,
- struct stat64_emu31 __user *, statbuf, int, flag)
-{
- struct kstat stat;
- int error;
-
- error = vfs_fstatat(dfd, filename, &stat, flag);
- if (error)
- return error;
- return cp_stat64(statbuf, &stat);
-}
-
-/*
- * Linux/i386 didn't use to be able to handle more than
- * 4 system call parameters, so these system calls used a memory
- * block for parameter passing..
- */
-
-struct mmap_arg_struct_emu31 {
- compat_ulong_t addr;
- compat_ulong_t len;
- compat_ulong_t prot;
- compat_ulong_t flags;
- compat_ulong_t fd;
- compat_ulong_t offset;
-};
-
-COMPAT_SYSCALL_DEFINE1(s390_old_mmap, struct mmap_arg_struct_emu31 __user *, arg)
-{
- struct mmap_arg_struct_emu31 a;
-
- if (copy_from_user(&a, arg, sizeof(a)))
- return -EFAULT;
- if (a.offset & ~PAGE_MASK)
- return -EINVAL;
- return ksys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd,
- a.offset >> PAGE_SHIFT);
-}
-
-COMPAT_SYSCALL_DEFINE1(s390_mmap2, struct mmap_arg_struct_emu31 __user *, arg)
-{
- struct mmap_arg_struct_emu31 a;
-
- if (copy_from_user(&a, arg, sizeof(a)))
- return -EFAULT;
- return ksys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd, a.offset);
-}
-
-COMPAT_SYSCALL_DEFINE3(s390_read, unsigned int, fd, char __user *, buf, compat_size_t, count)
-{
- if ((compat_ssize_t) count < 0)
- return -EINVAL;
-
- return ksys_read(fd, buf, count);
-}
-
-COMPAT_SYSCALL_DEFINE3(s390_write, unsigned int, fd, const char __user *, buf, compat_size_t, count)
-{
- if ((compat_ssize_t) count < 0)
- return -EINVAL;
-
- return ksys_write(fd, buf, count);
-}
-
-/*
- * 31 bit emulation wrapper functions for sys_fadvise64/fadvise64_64.
- * These need to rewrite the advise values for POSIX_FADV_{DONTNEED,NOREUSE}
- * because the 31 bit values differ from the 64 bit values.
- */
-
-COMPAT_SYSCALL_DEFINE5(s390_fadvise64, int, fd, u32, high, u32, low, compat_size_t, len, int, advise)
-{
- if (advise == 4)
- advise = POSIX_FADV_DONTNEED;
- else if (advise == 5)
- advise = POSIX_FADV_NOREUSE;
- return ksys_fadvise64_64(fd, (unsigned long)high << 32 | low, len,
- advise);
-}
-
-struct fadvise64_64_args {
- int fd;
- long long offset;
- long long len;
- int advice;
-};
-
-COMPAT_SYSCALL_DEFINE1(s390_fadvise64_64, struct fadvise64_64_args __user *, args)
-{
- struct fadvise64_64_args a;
-
- if ( copy_from_user(&a, args, sizeof(a)) )
- return -EFAULT;
- if (a.advice == 4)
- a.advice = POSIX_FADV_DONTNEED;
- else if (a.advice == 5)
- a.advice = POSIX_FADV_NOREUSE;
- return ksys_fadvise64_64(a.fd, a.offset, a.len, a.advice);
-}
-
-COMPAT_SYSCALL_DEFINE6(s390_sync_file_range, int, fd, u32, offhigh, u32, offlow,
- u32, nhigh, u32, nlow, unsigned int, flags)
-{
- return ksys_sync_file_range(fd, ((loff_t)offhigh << 32) + offlow,
- ((u64)nhigh << 32) + nlow, flags);
-}
-
-COMPAT_SYSCALL_DEFINE6(s390_fallocate, int, fd, int, mode, u32, offhigh, u32, offlow,
- u32, lenhigh, u32, lenlow)
-{
- return ksys_fallocate(fd, mode, ((loff_t)offhigh << 32) + offlow,
- ((u64)lenhigh << 32) + lenlow);
-}
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