+++ /dev/null
-/* 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/utsname.h>
-#include <linux/smp.h>
-#include <linux/smp_lock.h>
-#include <linux/sem.h>
-#include <linux/msg.h>
-#include <linux/shm.h>
-#include <linux/slab.h>
-#include <linux/uio.h>
-#include <linux/nfs_fs.h>
-#include <linux/quota.h>
-#include <linux/module.h>
-#include <linux/sunrpc/svc.h>
-#include <linux/nfsd/nfsd.h>
-#include <linux/nfsd/cache.h>
-#include <linux/nfsd/xdr.h>
-#include <linux/nfsd/syscall.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/netfilter_ipv4/ip_tables.h>
-#include <linux/ptrace.h>
-
-#include <asm/types.h>
-#include <asm/uaccess.h>
-#include <asm/fpumacro.h>
-#include <asm/mmu_context.h>
-#include <asm/compat_signal.h>
-
-#ifdef CONFIG_SYSVIPC
-asmlinkage long compat_sys_ipc(u32 call, u32 first, u32 second, u32 third, compat_uptr_t ptr, u32 fifth)
-{
- int version;
-
- version = call >> 16; /* hack for backward compatibility */
- call &= 0xffff;
-
- switch (call) {
- case SEMTIMEDOP:
- if (fifth)
- /* sign extend semid */
- return compat_sys_semtimedop((int)first,
- compat_ptr(ptr), second,
- compat_ptr(fifth));
- /* else fall through for normal semop() */
- case SEMOP:
- /* struct sembuf is the same on 32 and 64bit :)) */
- /* sign extend semid */
- return sys_semtimedop((int)first, compat_ptr(ptr), second,
- NULL);
- case SEMGET:
- /* sign extend key, nsems */
- return sys_semget((int)first, (int)second, third);
- case SEMCTL:
- /* sign extend semid, semnum */
- return compat_sys_semctl((int)first, (int)second, third,
- compat_ptr(ptr));
-
- case MSGSND:
- /* sign extend msqid */
- return compat_sys_msgsnd((int)first, (int)second, third,
- compat_ptr(ptr));
- case MSGRCV:
- /* sign extend msqid, msgtyp */
- return compat_sys_msgrcv((int)first, second, (int)fifth,
- third, version, compat_ptr(ptr));
- case MSGGET:
- /* sign extend key */
- return sys_msgget((int)first, second);
- case MSGCTL:
- /* sign extend msqid */
- return compat_sys_msgctl((int)first, second, compat_ptr(ptr));
-
- case SHMAT:
- /* sign extend shmid */
- return compat_sys_shmat((int)first, second, third, version,
- compat_ptr(ptr));
- case SHMDT:
- return sys_shmdt(compat_ptr(ptr));
- case SHMGET:
- /* sign extend key_t */
- return sys_shmget((int)first, second, third);
- case SHMCTL:
- /* sign extend shmid */
- return compat_sys_shmctl((int)first, second, compat_ptr(ptr));
-
- default:
- return -ENOSYS;
- };
-
- return -ENOSYS;
-}
-#endif
-
-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(stat->uid, &statbuf->st_uid);
- err |= put_user(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;
-}
-
-asmlinkage long compat_sys_stat64(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;
-}
-
-asmlinkage long compat_sys_lstat64(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;
-}
-
-asmlinkage long compat_sys_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;
-}
-
-asmlinkage long compat_sys_fstatat64(unsigned int dfd, char __user *filename,
- struct compat_stat64 __user * statbuf, int flag)
-{
- struct kstat stat;
- int error = -EINVAL;
-
- if ((flag & ~AT_SYMLINK_NOFOLLOW) != 0)
- goto out;
-
- if (flag & AT_SYMLINK_NOFOLLOW)
- error = vfs_lstat_fd(dfd, filename, &stat);
- else
- error = vfs_stat_fd(dfd, filename, &stat);
-
- if (!error)
- error = cp_compat_stat64(&stat, statbuf);
-
-out:
- return error;
-}
-
-asmlinkage long compat_sys_sysfs(int option, u32 arg1, u32 arg2)
-{
- return sys_sysfs(option, arg1, arg2);
-}
-
-asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid, struct compat_timespec __user *interval)
-{
- struct timespec t;
- int ret;
- mm_segment_t old_fs = get_fs ();
-
- set_fs (KERNEL_DS);
- ret = sys_sched_rr_get_interval(pid, (struct timespec __user *) &t);
- set_fs (old_fs);
- if (put_compat_timespec(&t, interval))
- return -EFAULT;
- return ret;
-}
-
-asmlinkage long compat_sys_rt_sigprocmask(int how,
- compat_sigset_t __user *set,
- compat_sigset_t __user *oset,
- compat_size_t sigsetsize)
-{
- sigset_t s;
- compat_sigset_t s32;
- int ret;
- mm_segment_t old_fs = get_fs();
-
- if (set) {
- if (copy_from_user (&s32, set, sizeof(compat_sigset_t)))
- return -EFAULT;
- switch (_NSIG_WORDS) {
- case 4: s.sig[3] = s32.sig[6] | (((long)s32.sig[7]) << 32);
- case 3: s.sig[2] = s32.sig[4] | (((long)s32.sig[5]) << 32);
- case 2: s.sig[1] = s32.sig[2] | (((long)s32.sig[3]) << 32);
- case 1: s.sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32);
- }
- }
- set_fs (KERNEL_DS);
- ret = sys_rt_sigprocmask(how,
- set ? (sigset_t __user *) &s : NULL,
- oset ? (sigset_t __user *) &s : NULL,
- sigsetsize);
- set_fs (old_fs);
- if (ret) return ret;
- if (oset) {
- switch (_NSIG_WORDS) {
- case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
- case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
- case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
- case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
- }
- if (copy_to_user (oset, &s32, sizeof(compat_sigset_t)))
- return -EFAULT;
- }
- return 0;
-}
-
-asmlinkage long sys32_rt_sigpending(compat_sigset_t __user *set,
- compat_size_t sigsetsize)
-{
- sigset_t s;
- compat_sigset_t s32;
- int ret;
- mm_segment_t old_fs = get_fs();
-
- set_fs (KERNEL_DS);
- ret = sys_rt_sigpending((sigset_t __user *) &s, sigsetsize);
- set_fs (old_fs);
- if (!ret) {
- switch (_NSIG_WORDS) {
- case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];
- case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];
- case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];
- case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];
- }
- if (copy_to_user (set, &s32, sizeof(compat_sigset_t)))
- return -EFAULT;
- }
- return ret;
-}
-
-asmlinkage long compat_sys_rt_sigqueueinfo(int pid, int sig,
- struct compat_siginfo __user *uinfo)
-{
- siginfo_t info;
- int ret;
- mm_segment_t old_fs = get_fs();
-
- if (copy_siginfo_from_user32(&info, uinfo))
- return -EFAULT;
-
- set_fs (KERNEL_DS);
- ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *) &info);
- set_fs (old_fs);
- return ret;
-}
-
-asmlinkage long compat_sys_sigaction(int sig, struct old_sigaction32 __user *act,
- struct old_sigaction32 __user *oact)
-{
- struct k_sigaction new_ka, old_ka;
- int ret;
-
- WARN_ON_ONCE(sig >= 0);
- sig = -sig;
-
- if (act) {
- compat_old_sigset_t mask;
- u32 u_handler, u_restorer;
-
- ret = get_user(u_handler, &act->sa_handler);
- new_ka.sa.sa_handler = compat_ptr(u_handler);
- ret |= __get_user(u_restorer, &act->sa_restorer);
- new_ka.sa.sa_restorer = compat_ptr(u_restorer);
- ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
- ret |= __get_user(mask, &act->sa_mask);
- if (ret)
- return ret;
- new_ka.ka_restorer = NULL;
- siginitset(&new_ka.sa.sa_mask, mask);
- }
-
- 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_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer);
- ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
- ret |= __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask);
- }
-
- return ret;
-}
-
-asmlinkage long compat_sys_rt_sigaction(int sig,
- struct sigaction32 __user *act,
- struct sigaction32 __user *oact,
- void __user *restorer,
- compat_size_t sigsetsize)
-{
- struct k_sigaction new_ka, old_ka;
- int ret;
- compat_sigset_t set32;
-
- /* 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 |= __copy_from_user(&set32, &act->sa_mask, sizeof(compat_sigset_t));
- switch (_NSIG_WORDS) {
- case 4: new_ka.sa.sa_mask.sig[3] = set32.sig[6] | (((long)set32.sig[7]) << 32);
- case 3: new_ka.sa.sa_mask.sig[2] = set32.sig[4] | (((long)set32.sig[5]) << 32);
- case 2: new_ka.sa.sa_mask.sig[1] = set32.sig[2] | (((long)set32.sig[3]) << 32);
- case 1: new_ka.sa.sa_mask.sig[0] = set32.sig[0] | (((long)set32.sig[1]) << 32);
- }
- 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) {
- switch (_NSIG_WORDS) {
- case 4: set32.sig[7] = (old_ka.sa.sa_mask.sig[3] >> 32); set32.sig[6] = old_ka.sa.sa_mask.sig[3];
- case 3: set32.sig[5] = (old_ka.sa.sa_mask.sig[2] >> 32); set32.sig[4] = old_ka.sa.sa_mask.sig[2];
- case 2: set32.sig[3] = (old_ka.sa.sa_mask.sig[1] >> 32); set32.sig[2] = old_ka.sa.sa_mask.sig[1];
- case 1: set32.sig[1] = (old_ka.sa.sa_mask.sig[0] >> 32); set32.sig[0] = old_ka.sa.sa_mask.sig[0];
- }
- ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler);
- ret |= __copy_to_user(&oact->sa_mask, &set32, sizeof(compat_sigset_t));
- 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;
-}
-
-/*
- * sparc32_execve() executes a new program after the asm stub has set
- * things up for us. This should basically do what I want it to.
- */
-asmlinkage long sparc32_execve(struct pt_regs *regs)
-{
- int error, base = 0;
- char *filename;
-
- /* User register window flush is done by entry.S */
-
- /* Check for indirect call. */
- if ((u32)regs->u_regs[UREG_G1] == 0)
- base = 1;
-
- filename = getname(compat_ptr(regs->u_regs[base + UREG_I0]));
- error = PTR_ERR(filename);
- if (IS_ERR(filename))
- goto out;
-
- error = compat_do_execve(filename,
- compat_ptr(regs->u_regs[base + UREG_I1]),
- compat_ptr(regs->u_regs[base + UREG_I2]), regs);
-
- putname(filename);
-
- if (!error) {
- fprs_write(0);
- current_thread_info()->xfsr[0] = 0;
- current_thread_info()->fpsaved[0] = 0;
- regs->tstate &= ~TSTATE_PEF;
- }
-out:
- return error;
-}
-
-#ifdef CONFIG_MODULES
-
-asmlinkage long sys32_init_module(void __user *umod, u32 len,
- const char __user *uargs)
-{
- return sys_init_module(umod, len, uargs);
-}
-
-asmlinkage long sys32_delete_module(const char __user *name_user,
- unsigned int flags)
-{
- return sys_delete_module(name_user, flags);
-}
-
-#else /* CONFIG_MODULES */
-
-asmlinkage long sys32_init_module(const char __user *name_user,
- struct module __user *mod_user)
-{
- return -ENOSYS;
-}
-
-asmlinkage long sys32_delete_module(const char __user *name_user)
-{
- return -ENOSYS;
-}
-
-#endif /* CONFIG_MODULES */
-
-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);
-}
-
-asmlinkage long compat_sys_readahead(int fd,
- unsigned long offhi,
- unsigned long offlo,
- compat_size_t count)
-{
- return sys_readahead(fd, (offhi << 32) | offlo, count);
-}
-
-long compat_sys_fadvise64(int fd,
- unsigned long offhi,
- unsigned long offlo,
- compat_size_t len, int advice)
-{
- return sys_fadvise64_64(fd, (offhi << 32) | offlo, len, advice);
-}
-
-long compat_sys_fadvise64_64(int fd,
- unsigned long offhi, unsigned long offlo,
- unsigned long lenhi, unsigned long lenlo,
- int advice)
-{
- return sys_fadvise64_64(fd,
- (offhi << 32) | offlo,
- (lenhi << 32) | lenlo,
- advice);
-}
-
-asmlinkage long compat_sys_sendfile(int out_fd, int in_fd,
- compat_off_t __user *offset,
- compat_size_t count)
-{
- mm_segment_t old_fs = get_fs();
- int ret;
- off_t of;
-
- if (offset && get_user(of, offset))
- return -EFAULT;
-
- set_fs(KERNEL_DS);
- ret = sys_sendfile(out_fd, in_fd,
- offset ? (off_t __user *) &of : NULL,
- count);
- set_fs(old_fs);
-
- if (offset && put_user(of, offset))
- return -EFAULT;
-
- return ret;
-}
-
-asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd,
- compat_loff_t __user *offset,
- compat_size_t count)
-{
- mm_segment_t old_fs = get_fs();
- int ret;
- loff_t lof;
-
- if (offset && get_user(lof, offset))
- return -EFAULT;
-
- set_fs(KERNEL_DS);
- ret = sys_sendfile64(out_fd, in_fd,
- offset ? (loff_t __user *) &lof : NULL,
- count);
- set_fs(old_fs);
-
- if (offset && put_user(lof, offset))
- return -EFAULT;
-
- return ret;
-}
-
-/* This is just a version for 32-bit applications which does
- * not force O_LARGEFILE on.
- */
-
-asmlinkage long sparc32_open(const char __user *filename,
- int flags, int mode)
-{
- return do_sys_open(AT_FDCWD, filename, flags, mode);
-}
-
-extern unsigned long do_mremap(unsigned long addr,
- unsigned long old_len, unsigned long new_len,
- unsigned long flags, unsigned long new_addr);
-
-asmlinkage unsigned long sys32_mremap(unsigned long addr,
- unsigned long old_len, unsigned long new_len,
- unsigned long flags, u32 __new_addr)
-{
- unsigned long ret = -EINVAL;
- unsigned long new_addr = __new_addr;
-
- if (unlikely(sparc_mmap_check(addr, old_len)))
- goto out;
- if (unlikely(sparc_mmap_check(new_addr, new_len)))
- goto out;
- down_write(¤t->mm->mmap_sem);
- ret = do_mremap(addr, old_len, new_len, flags, new_addr);
- up_write(¤t->mm->mmap_sem);
-out:
- return ret;
-}
-
-struct __sysctl_args32 {
- u32 name;
- int nlen;
- u32 oldval;
- u32 oldlenp;
- u32 newval;
- u32 newlen;
- u32 __unused[4];
-};
-
-asmlinkage long sys32_sysctl(struct __sysctl_args32 __user *args)
-{
-#ifndef CONFIG_SYSCTL_SYSCALL
- return -ENOSYS;
-#else
- struct __sysctl_args32 tmp;
- int error;
- size_t oldlen, __user *oldlenp = NULL;
- unsigned long addr = (((unsigned long)&args->__unused[0]) + 7UL) & ~7UL;
-
- if (copy_from_user(&tmp, args, sizeof(tmp)))
- return -EFAULT;
-
- if (tmp.oldval && tmp.oldlenp) {
- /* Duh, this is ugly and might not work if sysctl_args
- is in read-only memory, but do_sysctl does indirectly
- a lot of uaccess in both directions and we'd have to
- basically copy the whole sysctl.c here, and
- glibc's __sysctl uses rw memory for the structure
- anyway. */
- if (get_user(oldlen, (u32 __user *)(unsigned long)tmp.oldlenp) ||
- put_user(oldlen, (size_t __user *)addr))
- return -EFAULT;
- oldlenp = (size_t __user *)addr;
- }
-
- lock_kernel();
- error = do_sysctl((int __user *)(unsigned long) tmp.name,
- tmp.nlen,
- (void __user *)(unsigned long) tmp.oldval,
- oldlenp,
- (void __user *)(unsigned long) tmp.newval,
- tmp.newlen);
- unlock_kernel();
- if (oldlenp) {
- if (!error) {
- if (get_user(oldlen, (size_t __user *)addr) ||
- put_user(oldlen, (u32 __user *)(unsigned long) tmp.oldlenp))
- error = -EFAULT;
- }
- if (copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused)))
- error = -EFAULT;
- }
- return error;
-#endif
-}
-
-long sys32_lookup_dcookie(unsigned long cookie_high,
- unsigned long cookie_low,
- char __user *buf, size_t len)
-{
- return sys_lookup_dcookie((cookie_high << 32) | cookie_low,
- buf, len);
-}
-
-long compat_sync_file_range(int fd, unsigned long off_high, unsigned long off_low, unsigned long nb_high, unsigned long nb_low, int flags)
-{
- return sys_sync_file_range(fd,
- (off_high << 32) | off_low,
- (nb_high << 32) | nb_low,
- flags);
-}
-
-asmlinkage long compat_sys_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);
-}
git.samba.org / sfrench / cifs-2.6.git / blobdiff