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// SPDX-License-Identifier: GPL-2.0
/* sys_sparc32.c: Conversion between 32bit and 64bit native syscalls.
*
* Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
* Copyright (C) 1997, 2007 David S. Miller (davem@davemloft.net)
*
* These routines maintain argument size conversion between 32bit and 64bit
* environment.
*/
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/capability.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/nfs_fs.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/highuid.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/dnotify.h>
#include <linux/security.h>
#include <linux/compat.h>
#include <linux/vfs.h>
#include <linux/ptrace.h>
#include <linux/slab.h>
#include <asm/types.h>
#include <linux/uaccess.h>
#include <asm/fpumacro.h>
#include <asm/mmu_context.h>
#include <asm/compat_signal.h>
#include "systbls.h"
asmlinkage long sys32_truncate64(const char __user * path, unsigned long high, unsigned long low)
{
if ((int)high < 0)
return -EINVAL;
else
return sys_truncate(path, (high << 32) | low);
}
asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long high, unsigned long low)
{
if ((int)high < 0)
return -EINVAL;
else
return sys_ftruncate(fd, (high << 32) | low);
}
static int cp_compat_stat64(struct kstat *stat,
struct compat_stat64 __user *statbuf)
{
int err;
err = put_user(huge_encode_dev(stat->dev), &statbuf->st_dev);
err |= put_user(stat->ino, &statbuf->st_ino);
err |= put_user(stat->mode, &statbuf->st_mode);
err |= put_user(stat->nlink, &statbuf->st_nlink);
err |= put_user(from_kuid_munged(current_user_ns(), stat->uid), &statbuf->st_uid);
err |= put_user(from_kgid_munged(current_user_ns(), stat->gid), &statbuf->st_gid);
err |= put_user(huge_encode_dev(stat->rdev), &statbuf->st_rdev);
err |= put_user(0, (unsigned long __user *) &statbuf->__pad3[0]);
err |= put_user(stat->size, &statbuf->st_size);
err |= put_user(stat->blksize, &statbuf->st_blksize);
err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[0]);
err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[4]);
err |= put_user(stat->blocks, &statbuf->st_blocks);
err |= put_user(stat->atime.tv_sec, &statbuf->st_atime);
err |= put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec);
err |= put_user(stat->mtime.tv_sec, &statbuf->st_mtime);
err |= put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec);
err |= put_user(stat->ctime.tv_sec, &statbuf->st_ctime);
err |= put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec);
err |= put_user(0, &statbuf->__unused4);
err |= put_user(0, &statbuf->__unused5);
return err;
}
COMPAT_SYSCALL_DEFINE2(stat64, const char __user *, filename,
struct compat_stat64 __user *, statbuf)
{
struct kstat stat;
int error = vfs_stat(filename, &stat);
if (!error)
error = cp_compat_stat64(&stat, statbuf);
return error;
}
COMPAT_SYSCALL_DEFINE2(lstat64, const char __user *, filename,
struct compat_stat64 __user *, statbuf)
{
struct kstat stat;
int error = vfs_lstat(filename, &stat);
if (!error)
error = cp_compat_stat64(&stat, statbuf);
return error;
}
COMPAT_SYSCALL_DEFINE2(fstat64, unsigned int, fd,
struct compat_stat64 __user *, statbuf)
{
struct kstat stat;
int error = vfs_fstat(fd, &stat);
if (!error)
error = cp_compat_stat64(&stat, statbuf);
return error;
}
COMPAT_SYSCALL_DEFINE4(fstatat64, unsigned int, dfd,
const char __user *, filename,
struct compat_stat64 __user *, statbuf, int, flag)
{
struct kstat stat;
int error;
error = vfs_fstatat(dfd, filename, &stat, flag);
if (error)
return error;
return cp_compat_stat64(&stat, statbuf);
}
COMPAT_SYSCALL_DEFINE3(sparc_sigaction, int, sig,
struct compat_old_sigaction __user *,act,
struct compat_old_sigaction __user *,oact)
{
WARN_ON_ONCE(sig >= 0);
return compat_sys_sigaction(-sig, act, oact);
}
COMPAT_SYSCALL_DEFINE5(rt_sigaction, int, sig,
struct compat_sigaction __user *,act,
struct compat_sigaction __user *,oact,
void __user *,restorer,
compat_size_t,sigsetsize)
{
struct k_sigaction new_ka, old_ka;
int ret;
/* XXX: Don't preclude handling different sized sigset_t's. */
if (sigsetsize != sizeof(compat_sigset_t))
return -EINVAL;
if (act) {
u32 u_handler, u_restorer;
new_ka.ka_restorer = restorer;
ret = get_user(u_handler, &act->sa_handler);
new_ka.sa.sa_handler = compat_ptr(u_handler);
ret |= get_compat_sigset(&new_ka.sa.sa_mask, &act->sa_mask);
ret |= get_user(new_ka.sa.sa_flags, &act->sa_flags);
ret |= get_user(u_restorer, &act->sa_restorer);
new_ka.sa.sa_restorer = compat_ptr(u_restorer);
if (ret)
return -EFAULT;
}
ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
if (!ret && oact) {
ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler);
ret |= put_compat_sigset(&oact->sa_mask, &old_ka.sa.sa_mask,
sizeof(oact->sa_mask));
ret |= put_user(old_ka.sa.sa_flags, &oact->sa_flags);
ret |= put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer);
if (ret)
ret = -EFAULT;
}
return ret;
}
asmlinkage compat_ssize_t sys32_pread64(unsigned int fd,
char __user *ubuf,
compat_size_t count,
unsigned long poshi,
unsigned long poslo)
{
return sys_pread64(fd, ubuf, count, (poshi << 32) | poslo);
}
asmlinkage compat_ssize_t sys32_pwrite64(unsigned int fd,
char __user *ubuf,
compat_size_t count,
unsigned long poshi,
unsigned long poslo)
{
return sys_pwrite64(fd, ubuf, count, (poshi << 32) | poslo);
}
COMPAT_SYSCALL_DEFINE4(readahead, int, fd, u32, offhi, u32, offlo,
compat_size_t, count)
{
return sys_readahead(fd, ((u64)offhi << 32) | offlo, count);
}
COMPAT_SYSCALL_DEFINE5(fadvise64, int, fd, u32, offhi, u32, offlo,
compat_size_t, len, int, advice)
{
return sys_fadvise64_64(fd, ((u64)offhi << 32) | offlo, len, advice);
}
COMPAT_SYSCALL_DEFINE6(fadvise64_64, int, fd, u32, offhi, u32, offlo,
u32, lenhi, u32, lenlo, int, advice)
{
return sys_fadvise64_64(fd,
((u64)offhi << 32) | offlo,
((u64)lenhi << 32) | lenlo,
advice);
}
COMPAT_SYSCALL_DEFINE6(sync_file_range, unsigned int, fd, u32, off_high, u32, off_low,
u32, nb_high, u32, nb_low, unsigned int, flags)
{
return sys_sync_file_range(fd,
((u64)off_high << 32) | off_low,
((u64)nb_high << 32) | nb_low,
flags);
}
COMPAT_SYSCALL_DEFINE6(fallocate, int, fd, int, mode, u32, offhi, u32, offlo,
u32, lenhi, u32, lenlo)
{
return sys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo,
((loff_t)lenhi << 32) | lenlo);
}
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