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https://github.com/torvalds/linux.git
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8844a50986
Pull sparc syscall cleanups from Al Viro:
"sparc syscall stuff - killing pointless wrappers, conversions to
{COMPAT_,}SYSCALL_DEFINE"
* 'misc.sparc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
sparc: get rid of asm wrapper for nis_syscall()
sparc: switch compat {f,}truncate64() to COMPAT_SYSCALL_DEFINE
sparc: switch compat pread64 and pwrite64 to COMPAT_SYSCALL_DEFINE
convert compat sync_file_range() to COMPAT_SYSCALL_DEFINE
switch sparc_remap_file_pages() to SYSCALL_DEFINE
sparc: get rid of memory_ordering(2) wrapper
sparc: trivial conversions to {COMPAT_,}SYSCALL_DEFINE()
sparc: bury a zombie extern that had been that way for twenty years
sparc: get rid of remaining SIGN... wrappers
sparc: kill useless SIGN... wrappers
sparc: get rid of sys_sparc_pipe() wrappers
239 lines
6.9 KiB
C
239 lines
6.9 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/* sys_sparc32.c: Conversion between 32bit and 64bit native syscalls.
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*
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* Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
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* Copyright (C) 1997, 2007 David S. Miller (davem@davemloft.net)
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*
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* These routines maintain argument size conversion between 32bit and 64bit
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* environment.
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*/
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/capability.h>
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#include <linux/fs.h>
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#include <linux/mm.h>
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#include <linux/file.h>
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#include <linux/signal.h>
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#include <linux/resource.h>
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#include <linux/times.h>
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#include <linux/smp.h>
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#include <linux/sem.h>
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#include <linux/msg.h>
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#include <linux/shm.h>
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#include <linux/uio.h>
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#include <linux/nfs_fs.h>
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#include <linux/quota.h>
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#include <linux/poll.h>
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#include <linux/personality.h>
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#include <linux/stat.h>
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#include <linux/filter.h>
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#include <linux/highmem.h>
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#include <linux/highuid.h>
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#include <linux/mman.h>
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#include <linux/ipv6.h>
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#include <linux/in.h>
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#include <linux/icmpv6.h>
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#include <linux/syscalls.h>
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#include <linux/sysctl.h>
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#include <linux/binfmts.h>
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#include <linux/dnotify.h>
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#include <linux/security.h>
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#include <linux/compat.h>
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#include <linux/vfs.h>
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#include <linux/ptrace.h>
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#include <linux/slab.h>
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#include <asm/types.h>
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#include <linux/uaccess.h>
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#include <asm/fpumacro.h>
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#include <asm/mmu_context.h>
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#include <asm/compat_signal.h>
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#include "systbls.h"
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COMPAT_SYSCALL_DEFINE3(truncate64, const char __user *, path, u32, high, u32, low)
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{
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return ksys_truncate(path, ((u64)high << 32) | low);
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}
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COMPAT_SYSCALL_DEFINE3(ftruncate64, unsigned int, fd, u32, high, u32, low)
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{
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return ksys_ftruncate(fd, ((u64)high << 32) | low);
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}
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static int cp_compat_stat64(struct kstat *stat,
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struct compat_stat64 __user *statbuf)
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{
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int err;
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err = put_user(huge_encode_dev(stat->dev), &statbuf->st_dev);
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err |= put_user(stat->ino, &statbuf->st_ino);
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err |= put_user(stat->mode, &statbuf->st_mode);
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err |= put_user(stat->nlink, &statbuf->st_nlink);
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err |= put_user(from_kuid_munged(current_user_ns(), stat->uid), &statbuf->st_uid);
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err |= put_user(from_kgid_munged(current_user_ns(), stat->gid), &statbuf->st_gid);
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err |= put_user(huge_encode_dev(stat->rdev), &statbuf->st_rdev);
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err |= put_user(0, (unsigned long __user *) &statbuf->__pad3[0]);
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err |= put_user(stat->size, &statbuf->st_size);
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err |= put_user(stat->blksize, &statbuf->st_blksize);
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err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[0]);
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err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[4]);
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err |= put_user(stat->blocks, &statbuf->st_blocks);
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err |= put_user(stat->atime.tv_sec, &statbuf->st_atime);
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err |= put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec);
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err |= put_user(stat->mtime.tv_sec, &statbuf->st_mtime);
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err |= put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec);
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err |= put_user(stat->ctime.tv_sec, &statbuf->st_ctime);
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err |= put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec);
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err |= put_user(0, &statbuf->__unused4);
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err |= put_user(0, &statbuf->__unused5);
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return err;
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}
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COMPAT_SYSCALL_DEFINE2(stat64, const char __user *, filename,
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struct compat_stat64 __user *, statbuf)
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{
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struct kstat stat;
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int error = vfs_stat(filename, &stat);
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if (!error)
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error = cp_compat_stat64(&stat, statbuf);
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return error;
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}
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COMPAT_SYSCALL_DEFINE2(lstat64, const char __user *, filename,
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struct compat_stat64 __user *, statbuf)
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{
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struct kstat stat;
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int error = vfs_lstat(filename, &stat);
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if (!error)
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error = cp_compat_stat64(&stat, statbuf);
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return error;
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}
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COMPAT_SYSCALL_DEFINE2(fstat64, unsigned int, fd,
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struct compat_stat64 __user *, statbuf)
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{
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struct kstat stat;
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int error = vfs_fstat(fd, &stat);
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if (!error)
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error = cp_compat_stat64(&stat, statbuf);
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return error;
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}
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COMPAT_SYSCALL_DEFINE4(fstatat64, unsigned int, dfd,
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const char __user *, filename,
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struct compat_stat64 __user *, statbuf, int, flag)
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{
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struct kstat stat;
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int error;
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error = vfs_fstatat(dfd, filename, &stat, flag);
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if (error)
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return error;
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return cp_compat_stat64(&stat, statbuf);
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}
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COMPAT_SYSCALL_DEFINE3(sparc_sigaction, int, sig,
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struct compat_old_sigaction __user *,act,
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struct compat_old_sigaction __user *,oact)
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{
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WARN_ON_ONCE(sig >= 0);
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return compat_sys_sigaction(-sig, act, oact);
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}
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COMPAT_SYSCALL_DEFINE5(rt_sigaction, int, sig,
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struct compat_sigaction __user *,act,
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struct compat_sigaction __user *,oact,
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void __user *,restorer,
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compat_size_t,sigsetsize)
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{
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struct k_sigaction new_ka, old_ka;
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int ret;
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/* XXX: Don't preclude handling different sized sigset_t's. */
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if (sigsetsize != sizeof(compat_sigset_t))
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return -EINVAL;
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if (act) {
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u32 u_handler, u_restorer;
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new_ka.ka_restorer = restorer;
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ret = get_user(u_handler, &act->sa_handler);
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new_ka.sa.sa_handler = compat_ptr(u_handler);
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ret |= get_compat_sigset(&new_ka.sa.sa_mask, &act->sa_mask);
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ret |= get_user(new_ka.sa.sa_flags, &act->sa_flags);
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ret |= get_user(u_restorer, &act->sa_restorer);
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new_ka.sa.sa_restorer = compat_ptr(u_restorer);
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if (ret)
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return -EFAULT;
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}
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ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
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if (!ret && oact) {
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ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler);
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ret |= put_compat_sigset(&oact->sa_mask, &old_ka.sa.sa_mask,
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sizeof(oact->sa_mask));
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ret |= put_user(old_ka.sa.sa_flags, &oact->sa_flags);
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ret |= put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer);
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if (ret)
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ret = -EFAULT;
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}
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return ret;
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}
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COMPAT_SYSCALL_DEFINE5(pread64, unsigned int, fd, char __user *, ubuf,
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compat_size_t, count, u32, poshi, u32, poslo)
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{
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return ksys_pread64(fd, ubuf, count, ((u64)poshi << 32) | poslo);
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}
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COMPAT_SYSCALL_DEFINE5(pwrite64, unsigned int, fd, char __user *, ubuf,
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compat_size_t, count, u32, poshi, u32, poslo)
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{
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return ksys_pwrite64(fd, ubuf, count, ((u64)poshi << 32) | poslo);
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}
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COMPAT_SYSCALL_DEFINE4(readahead, int, fd, u32, offhi, u32, offlo,
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compat_size_t, count)
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{
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return ksys_readahead(fd, ((u64)offhi << 32) | offlo, count);
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}
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COMPAT_SYSCALL_DEFINE5(fadvise64, int, fd, u32, offhi, u32, offlo,
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compat_size_t, len, int, advice)
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{
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return ksys_fadvise64_64(fd, ((u64)offhi << 32) | offlo, len, advice);
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}
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COMPAT_SYSCALL_DEFINE6(fadvise64_64, int, fd, u32, offhi, u32, offlo,
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u32, lenhi, u32, lenlo, int, advice)
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{
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return ksys_fadvise64_64(fd,
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((u64)offhi << 32) | offlo,
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((u64)lenhi << 32) | lenlo,
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advice);
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}
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COMPAT_SYSCALL_DEFINE6(sync_file_range, unsigned int, fd, u32, off_high, u32, off_low,
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u32, nb_high, u32, nb_low, unsigned int, flags)
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{
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return ksys_sync_file_range(fd,
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((u64)off_high << 32) | off_low,
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((u64)nb_high << 32) | nb_low,
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flags);
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}
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COMPAT_SYSCALL_DEFINE6(fallocate, int, fd, int, mode, u32, offhi, u32, offlo,
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u32, lenhi, u32, lenlo)
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{
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return ksys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo,
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((loff_t)lenhi << 32) | lenlo);
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}
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