diff options
Diffstat (limited to 'arch/sparc/kernel/sys_sparc32.c')
| -rw-r--r-- | arch/sparc/kernel/sys_sparc32.c | 237 |
1 files changed, 237 insertions, 0 deletions
diff --git a/arch/sparc/kernel/sys_sparc32.c b/arch/sparc/kernel/sys_sparc32.c new file mode 100644 index 000000000..f84a02ab6 --- /dev/null +++ b/arch/sparc/kernel/sys_sparc32.c @@ -0,0 +1,237 @@ +// 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/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" + +COMPAT_SYSCALL_DEFINE3(truncate64, const char __user *, path, u32, high, u32, low) +{ + return ksys_truncate(path, ((u64)high << 32) | low); +} + +COMPAT_SYSCALL_DEFINE3(ftruncate64, unsigned int, fd, u32, high, u32, low) +{ + return ksys_ftruncate(fd, ((u64)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; +} + +COMPAT_SYSCALL_DEFINE5(pread64, unsigned int, fd, char __user *, ubuf, + compat_size_t, count, u32, poshi, u32, poslo) +{ + return ksys_pread64(fd, ubuf, count, ((u64)poshi << 32) | poslo); +} + +COMPAT_SYSCALL_DEFINE5(pwrite64, unsigned int, fd, char __user *, ubuf, + compat_size_t, count, u32, poshi, u32, poslo) +{ + return ksys_pwrite64(fd, ubuf, count, ((u64)poshi << 32) | poslo); +} + +COMPAT_SYSCALL_DEFINE4(readahead, int, fd, u32, offhi, u32, offlo, + compat_size_t, count) +{ + return ksys_readahead(fd, ((u64)offhi << 32) | offlo, count); +} + +COMPAT_SYSCALL_DEFINE5(fadvise64, int, fd, u32, offhi, u32, offlo, + compat_size_t, len, int, advice) +{ + return ksys_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 ksys_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 ksys_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 ksys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo, + ((loff_t)lenhi << 32) | lenlo); +} |