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237 lines
6.8 KiB
237 lines
6.8 KiB
// 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 ([email protected]) |
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* Copyright (C) 1997, 2007 David S. Miller ([email protected]) |
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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/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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