813 lines
24 KiB
C
813 lines
24 KiB
C
/*
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* sys_ppc32.c: Conversion between 32bit and 64bit native syscalls.
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*
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* Copyright (C) 2001 IBM
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* Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
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* Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
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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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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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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/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/utsname.h>
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#include <linux/smp.h>
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#include <linux/smp_lock.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/poll.h>
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#include <linux/personality.h>
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#include <linux/stat.h>
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#include <linux/mman.h>
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#include <linux/in.h>
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#include <linux/syscalls.h>
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#include <linux/unistd.h>
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#include <linux/sysctl.h>
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#include <linux/binfmts.h>
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#include <linux/security.h>
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#include <linux/compat.h>
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#include <linux/ptrace.h>
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#include <linux/elf.h>
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#include <asm/ptrace.h>
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#include <asm/types.h>
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#include <asm/ipc.h>
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#include <asm/uaccess.h>
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#include <asm/unistd.h>
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#include <asm/semaphore.h>
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#include <asm/time.h>
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#include <asm/mmu_context.h>
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#include <asm/ppc-pci.h>
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#include <asm/syscalls.h>
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struct old_linux_dirent32 {
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u32 d_ino;
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u32 d_offset;
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unsigned short d_namlen;
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char d_name[1];
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};
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struct readdir_callback32 {
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struct old_linux_dirent32 __user * dirent;
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int count;
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};
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static int fillonedir(void * __buf, const char * name, int namlen,
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off_t offset, u64 ino, unsigned int d_type)
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{
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struct readdir_callback32 * buf = (struct readdir_callback32 *) __buf;
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struct old_linux_dirent32 __user * dirent;
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ino_t d_ino;
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if (buf->count)
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return -EINVAL;
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d_ino = ino;
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if (sizeof(d_ino) < sizeof(ino) && d_ino != ino)
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return -EOVERFLOW;
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buf->count++;
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dirent = buf->dirent;
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put_user(d_ino, &dirent->d_ino);
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put_user(offset, &dirent->d_offset);
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put_user(namlen, &dirent->d_namlen);
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copy_to_user(dirent->d_name, name, namlen);
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put_user(0, dirent->d_name + namlen);
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return 0;
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}
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asmlinkage int old32_readdir(unsigned int fd, struct old_linux_dirent32 __user *dirent, unsigned int count)
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{
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int error = -EBADF;
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struct file * file;
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struct readdir_callback32 buf;
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file = fget(fd);
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if (!file)
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goto out;
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buf.count = 0;
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buf.dirent = dirent;
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error = vfs_readdir(file, (filldir_t)fillonedir, &buf);
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if (error < 0)
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goto out_putf;
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error = buf.count;
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out_putf:
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fput(file);
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out:
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return error;
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}
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asmlinkage long ppc32_select(u32 n, compat_ulong_t __user *inp,
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compat_ulong_t __user *outp, compat_ulong_t __user *exp,
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compat_uptr_t tvp_x)
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{
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/* sign extend n */
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return compat_sys_select((int)n, inp, outp, exp, compat_ptr(tvp_x));
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}
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int cp_compat_stat(struct kstat *stat, struct compat_stat __user *statbuf)
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{
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compat_ino_t ino;
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long err;
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if (stat->size > MAX_NON_LFS || !new_valid_dev(stat->dev) ||
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!new_valid_dev(stat->rdev))
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return -EOVERFLOW;
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ino = stat->ino;
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if (sizeof(ino) < sizeof(stat->ino) && ino != stat->ino)
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return -EOVERFLOW;
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err = access_ok(VERIFY_WRITE, statbuf, sizeof(*statbuf)) ? 0 : -EFAULT;
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err |= __put_user(new_encode_dev(stat->dev), &statbuf->st_dev);
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err |= __put_user(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(stat->uid, &statbuf->st_uid);
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err |= __put_user(stat->gid, &statbuf->st_gid);
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err |= __put_user(new_encode_dev(stat->rdev), &statbuf->st_rdev);
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err |= __put_user(stat->size, &statbuf->st_size);
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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(stat->blksize, &statbuf->st_blksize);
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err |= __put_user(stat->blocks, &statbuf->st_blocks);
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err |= __put_user(0, &statbuf->__unused4[0]);
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err |= __put_user(0, &statbuf->__unused4[1]);
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return err;
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}
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/* Note: it is necessary to treat option as an unsigned int,
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* with the corresponding cast to a signed int to insure that the
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* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
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* and the register representation of a signed int (msr in 64-bit mode) is performed.
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*/
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asmlinkage long compat_sys_sysfs(u32 option, u32 arg1, u32 arg2)
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{
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return sys_sysfs((int)option, arg1, arg2);
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}
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asmlinkage long compat_sys_pause(void)
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{
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current->state = TASK_INTERRUPTIBLE;
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schedule();
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return -ERESTARTNOHAND;
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}
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static inline long get_ts32(struct timespec *o, struct compat_timeval __user *i)
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{
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long usec;
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if (!access_ok(VERIFY_READ, i, sizeof(*i)))
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return -EFAULT;
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if (__get_user(o->tv_sec, &i->tv_sec))
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return -EFAULT;
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if (__get_user(usec, &i->tv_usec))
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return -EFAULT;
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o->tv_nsec = usec * 1000;
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return 0;
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}
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static inline long put_tv32(struct compat_timeval __user *o, struct timeval *i)
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{
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return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) ||
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(__put_user(i->tv_sec, &o->tv_sec) |
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__put_user(i->tv_usec, &o->tv_usec)));
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}
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/* Translations due to time_t size differences. Which affects all
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sorts of things, like timeval and itimerval. */
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extern struct timezone sys_tz;
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asmlinkage long compat_sys_gettimeofday(struct compat_timeval __user *tv, struct timezone __user *tz)
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{
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if (tv) {
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struct timeval ktv;
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do_gettimeofday(&ktv);
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if (put_tv32(tv, &ktv))
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return -EFAULT;
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}
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if (tz) {
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if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
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return -EFAULT;
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}
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return 0;
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}
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asmlinkage long compat_sys_settimeofday(struct compat_timeval __user *tv, struct timezone __user *tz)
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{
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struct timespec kts;
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struct timezone ktz;
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if (tv) {
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if (get_ts32(&kts, tv))
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return -EFAULT;
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}
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if (tz) {
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if (copy_from_user(&ktz, tz, sizeof(ktz)))
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return -EFAULT;
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}
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return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
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}
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#ifdef CONFIG_SYSVIPC
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long compat_sys_ipc(u32 call, u32 first, u32 second, u32 third, compat_uptr_t ptr,
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u32 fifth)
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{
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int version;
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version = call >> 16; /* hack for backward compatibility */
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call &= 0xffff;
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switch (call) {
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case SEMTIMEDOP:
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if (fifth)
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/* sign extend semid */
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return compat_sys_semtimedop((int)first,
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compat_ptr(ptr), second,
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compat_ptr(fifth));
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/* else fall through for normal semop() */
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case SEMOP:
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/* struct sembuf is the same on 32 and 64bit :)) */
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/* sign extend semid */
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return sys_semtimedop((int)first, compat_ptr(ptr), second,
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NULL);
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case SEMGET:
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/* sign extend key, nsems */
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return sys_semget((int)first, (int)second, third);
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case SEMCTL:
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/* sign extend semid, semnum */
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return compat_sys_semctl((int)first, (int)second, third,
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compat_ptr(ptr));
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case MSGSND:
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/* sign extend msqid */
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return compat_sys_msgsnd((int)first, (int)second, third,
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compat_ptr(ptr));
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case MSGRCV:
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/* sign extend msqid, msgtyp */
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return compat_sys_msgrcv((int)first, second, (int)fifth,
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third, version, compat_ptr(ptr));
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case MSGGET:
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/* sign extend key */
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return sys_msgget((int)first, second);
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case MSGCTL:
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/* sign extend msqid */
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return compat_sys_msgctl((int)first, second, compat_ptr(ptr));
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case SHMAT:
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/* sign extend shmid */
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return compat_sys_shmat((int)first, second, third, version,
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compat_ptr(ptr));
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case SHMDT:
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return sys_shmdt(compat_ptr(ptr));
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case SHMGET:
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/* sign extend key_t */
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return sys_shmget((int)first, second, third);
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case SHMCTL:
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/* sign extend shmid */
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return compat_sys_shmctl((int)first, second, compat_ptr(ptr));
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default:
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return -ENOSYS;
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}
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return -ENOSYS;
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}
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#endif
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/* Note: it is necessary to treat out_fd and in_fd as unsigned ints,
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* with the corresponding cast to a signed int to insure that the
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* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
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* and the register representation of a signed int (msr in 64-bit mode) is performed.
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*/
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asmlinkage long compat_sys_sendfile(u32 out_fd, u32 in_fd, compat_off_t __user * offset, u32 count)
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{
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mm_segment_t old_fs = get_fs();
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int ret;
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off_t of;
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off_t __user *up;
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if (offset && get_user(of, offset))
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return -EFAULT;
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/* The __user pointer cast is valid because of the set_fs() */
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set_fs(KERNEL_DS);
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up = offset ? (off_t __user *) &of : NULL;
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ret = sys_sendfile((int)out_fd, (int)in_fd, up, count);
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set_fs(old_fs);
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if (offset && put_user(of, offset))
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return -EFAULT;
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return ret;
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}
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asmlinkage int compat_sys_sendfile64(int out_fd, int in_fd, compat_loff_t __user *offset, s32 count)
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{
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mm_segment_t old_fs = get_fs();
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int ret;
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loff_t lof;
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loff_t __user *up;
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if (offset && get_user(lof, offset))
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return -EFAULT;
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/* The __user pointer cast is valid because of the set_fs() */
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set_fs(KERNEL_DS);
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up = offset ? (loff_t __user *) &lof : NULL;
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ret = sys_sendfile64(out_fd, in_fd, up, count);
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set_fs(old_fs);
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if (offset && put_user(lof, offset))
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return -EFAULT;
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return ret;
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}
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long compat_sys_execve(unsigned long a0, unsigned long a1, unsigned long a2,
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unsigned long a3, unsigned long a4, unsigned long a5,
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struct pt_regs *regs)
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{
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int error;
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char * filename;
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filename = getname((char __user *) a0);
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error = PTR_ERR(filename);
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if (IS_ERR(filename))
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goto out;
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flush_fp_to_thread(current);
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flush_altivec_to_thread(current);
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error = compat_do_execve(filename, compat_ptr(a1), compat_ptr(a2), regs);
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if (error == 0) {
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task_lock(current);
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current->ptrace &= ~PT_DTRACE;
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task_unlock(current);
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}
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putname(filename);
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out:
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return error;
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}
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/* Note: it is necessary to treat option as an unsigned int,
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* with the corresponding cast to a signed int to insure that the
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* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
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* and the register representation of a signed int (msr in 64-bit mode) is performed.
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*/
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asmlinkage long compat_sys_prctl(u32 option, u32 arg2, u32 arg3, u32 arg4, u32 arg5)
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{
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return sys_prctl((int)option,
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(unsigned long) arg2,
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(unsigned long) arg3,
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(unsigned long) arg4,
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(unsigned long) arg5);
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}
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/* Note: it is necessary to treat pid as an unsigned int,
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* with the corresponding cast to a signed int to insure that the
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* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
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* and the register representation of a signed int (msr in 64-bit mode) is performed.
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*/
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asmlinkage long compat_sys_sched_rr_get_interval(u32 pid, struct compat_timespec __user *interval)
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{
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struct timespec t;
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int ret;
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mm_segment_t old_fs = get_fs ();
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/* The __user pointer cast is valid because of the set_fs() */
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set_fs (KERNEL_DS);
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ret = sys_sched_rr_get_interval((int)pid, (struct timespec __user *) &t);
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set_fs (old_fs);
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if (put_compat_timespec(&t, interval))
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return -EFAULT;
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return ret;
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}
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/* Note: it is necessary to treat mode as an unsigned int,
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* with the corresponding cast to a signed int to insure that the
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* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
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* and the register representation of a signed int (msr in 64-bit mode) is performed.
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*/
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asmlinkage long compat_sys_access(const char __user * filename, u32 mode)
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{
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return sys_access(filename, (int)mode);
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}
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/* Note: it is necessary to treat mode as an unsigned int,
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* with the corresponding cast to a signed int to insure that the
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* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
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* and the register representation of a signed int (msr in 64-bit mode) is performed.
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*/
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asmlinkage long compat_sys_creat(const char __user * pathname, u32 mode)
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{
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return sys_creat(pathname, (int)mode);
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}
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/* Note: it is necessary to treat pid and options as unsigned ints,
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* with the corresponding cast to a signed int to insure that the
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* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
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* and the register representation of a signed int (msr in 64-bit mode) is performed.
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*/
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asmlinkage long compat_sys_waitpid(u32 pid, unsigned int __user * stat_addr, u32 options)
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{
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return sys_waitpid((int)pid, stat_addr, (int)options);
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}
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/* Note: it is necessary to treat gidsetsize as an unsigned int,
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* with the corresponding cast to a signed int to insure that the
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* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
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* and the register representation of a signed int (msr in 64-bit mode) is performed.
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*/
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asmlinkage long compat_sys_getgroups(u32 gidsetsize, gid_t __user *grouplist)
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{
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return sys_getgroups((int)gidsetsize, grouplist);
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}
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/* Note: it is necessary to treat pid as an unsigned int,
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* with the corresponding cast to a signed int to insure that the
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* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
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* and the register representation of a signed int (msr in 64-bit mode) is performed.
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*/
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asmlinkage long compat_sys_getpgid(u32 pid)
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{
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return sys_getpgid((int)pid);
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}
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/* Note: it is necessary to treat pid as an unsigned int,
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* with the corresponding cast to a signed int to insure that the
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* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
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* and the register representation of a signed int (msr in 64-bit mode) is performed.
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*/
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asmlinkage long compat_sys_getsid(u32 pid)
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{
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return sys_getsid((int)pid);
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}
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/* Note: it is necessary to treat pid and sig as unsigned ints,
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* with the corresponding cast to a signed int to insure that the
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* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
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* and the register representation of a signed int (msr in 64-bit mode) is performed.
|
|
*/
|
|
asmlinkage long compat_sys_kill(u32 pid, u32 sig)
|
|
{
|
|
return sys_kill((int)pid, (int)sig);
|
|
}
|
|
|
|
|
|
/* Note: it is necessary to treat mode as an unsigned int,
|
|
* with the corresponding cast to a signed int to insure that the
|
|
* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
|
|
* and the register representation of a signed int (msr in 64-bit mode) is performed.
|
|
*/
|
|
asmlinkage long compat_sys_mkdir(const char __user * pathname, u32 mode)
|
|
{
|
|
return sys_mkdir(pathname, (int)mode);
|
|
}
|
|
|
|
long compat_sys_nice(u32 increment)
|
|
{
|
|
/* sign extend increment */
|
|
return sys_nice((int)increment);
|
|
}
|
|
|
|
off_t ppc32_lseek(unsigned int fd, u32 offset, unsigned int origin)
|
|
{
|
|
/* sign extend n */
|
|
return sys_lseek(fd, (int)offset, origin);
|
|
}
|
|
|
|
/* Note: it is necessary to treat bufsiz as an unsigned int,
|
|
* with the corresponding cast to a signed int to insure that the
|
|
* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
|
|
* and the register representation of a signed int (msr in 64-bit mode) is performed.
|
|
*/
|
|
asmlinkage long compat_sys_readlink(const char __user * path, char __user * buf, u32 bufsiz)
|
|
{
|
|
return sys_readlink(path, buf, (int)bufsiz);
|
|
}
|
|
|
|
/* Note: it is necessary to treat option as an unsigned int,
|
|
* with the corresponding cast to a signed int to insure that the
|
|
* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
|
|
* and the register representation of a signed int (msr in 64-bit mode) is performed.
|
|
*/
|
|
asmlinkage long compat_sys_sched_get_priority_max(u32 policy)
|
|
{
|
|
return sys_sched_get_priority_max((int)policy);
|
|
}
|
|
|
|
|
|
/* Note: it is necessary to treat policy as an unsigned int,
|
|
* with the corresponding cast to a signed int to insure that the
|
|
* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
|
|
* and the register representation of a signed int (msr in 64-bit mode) is performed.
|
|
*/
|
|
asmlinkage long compat_sys_sched_get_priority_min(u32 policy)
|
|
{
|
|
return sys_sched_get_priority_min((int)policy);
|
|
}
|
|
|
|
|
|
/* Note: it is necessary to treat pid as an unsigned int,
|
|
* with the corresponding cast to a signed int to insure that the
|
|
* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
|
|
* and the register representation of a signed int (msr in 64-bit mode) is performed.
|
|
*/
|
|
asmlinkage long compat_sys_sched_getparam(u32 pid, struct sched_param __user *param)
|
|
{
|
|
return sys_sched_getparam((int)pid, param);
|
|
}
|
|
|
|
|
|
/* Note: it is necessary to treat pid as an unsigned int,
|
|
* with the corresponding cast to a signed int to insure that the
|
|
* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
|
|
* and the register representation of a signed int (msr in 64-bit mode) is performed.
|
|
*/
|
|
asmlinkage long compat_sys_sched_getscheduler(u32 pid)
|
|
{
|
|
return sys_sched_getscheduler((int)pid);
|
|
}
|
|
|
|
|
|
/* Note: it is necessary to treat pid as an unsigned int,
|
|
* with the corresponding cast to a signed int to insure that the
|
|
* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
|
|
* and the register representation of a signed int (msr in 64-bit mode) is performed.
|
|
*/
|
|
asmlinkage long compat_sys_sched_setparam(u32 pid, struct sched_param __user *param)
|
|
{
|
|
return sys_sched_setparam((int)pid, param);
|
|
}
|
|
|
|
|
|
/* Note: it is necessary to treat pid and policy as unsigned ints,
|
|
* with the corresponding cast to a signed int to insure that the
|
|
* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
|
|
* and the register representation of a signed int (msr in 64-bit mode) is performed.
|
|
*/
|
|
asmlinkage long compat_sys_sched_setscheduler(u32 pid, u32 policy, struct sched_param __user *param)
|
|
{
|
|
return sys_sched_setscheduler((int)pid, (int)policy, param);
|
|
}
|
|
|
|
|
|
/* Note: it is necessary to treat len as an unsigned int,
|
|
* with the corresponding cast to a signed int to insure that the
|
|
* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
|
|
* and the register representation of a signed int (msr in 64-bit mode) is performed.
|
|
*/
|
|
asmlinkage long compat_sys_setdomainname(char __user *name, u32 len)
|
|
{
|
|
return sys_setdomainname(name, (int)len);
|
|
}
|
|
|
|
|
|
/* Note: it is necessary to treat gidsetsize as an unsigned int,
|
|
* with the corresponding cast to a signed int to insure that the
|
|
* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
|
|
* and the register representation of a signed int (msr in 64-bit mode) is performed.
|
|
*/
|
|
asmlinkage long compat_sys_setgroups(u32 gidsetsize, gid_t __user *grouplist)
|
|
{
|
|
return sys_setgroups((int)gidsetsize, grouplist);
|
|
}
|
|
|
|
|
|
asmlinkage long compat_sys_sethostname(char __user *name, u32 len)
|
|
{
|
|
/* sign extend len */
|
|
return sys_sethostname(name, (int)len);
|
|
}
|
|
|
|
|
|
/* Note: it is necessary to treat pid and pgid as unsigned ints,
|
|
* with the corresponding cast to a signed int to insure that the
|
|
* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
|
|
* and the register representation of a signed int (msr in 64-bit mode) is performed.
|
|
*/
|
|
asmlinkage long compat_sys_setpgid(u32 pid, u32 pgid)
|
|
{
|
|
return sys_setpgid((int)pid, (int)pgid);
|
|
}
|
|
|
|
long compat_sys_getpriority(u32 which, u32 who)
|
|
{
|
|
/* sign extend which and who */
|
|
return sys_getpriority((int)which, (int)who);
|
|
}
|
|
|
|
long compat_sys_setpriority(u32 which, u32 who, u32 niceval)
|
|
{
|
|
/* sign extend which, who and niceval */
|
|
return sys_setpriority((int)which, (int)who, (int)niceval);
|
|
}
|
|
|
|
long compat_sys_ioprio_get(u32 which, u32 who)
|
|
{
|
|
/* sign extend which and who */
|
|
return sys_ioprio_get((int)which, (int)who);
|
|
}
|
|
|
|
long compat_sys_ioprio_set(u32 which, u32 who, u32 ioprio)
|
|
{
|
|
/* sign extend which, who and ioprio */
|
|
return sys_ioprio_set((int)which, (int)who, (int)ioprio);
|
|
}
|
|
|
|
/* Note: it is necessary to treat newmask as an unsigned int,
|
|
* with the corresponding cast to a signed int to insure that the
|
|
* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
|
|
* and the register representation of a signed int (msr in 64-bit mode) is performed.
|
|
*/
|
|
asmlinkage long compat_sys_ssetmask(u32 newmask)
|
|
{
|
|
return sys_ssetmask((int) newmask);
|
|
}
|
|
|
|
asmlinkage long compat_sys_syslog(u32 type, char __user * buf, u32 len)
|
|
{
|
|
/* sign extend len */
|
|
return sys_syslog(type, buf, (int)len);
|
|
}
|
|
|
|
|
|
/* Note: it is necessary to treat mask as an unsigned int,
|
|
* with the corresponding cast to a signed int to insure that the
|
|
* proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
|
|
* and the register representation of a signed int (msr in 64-bit mode) is performed.
|
|
*/
|
|
asmlinkage long compat_sys_umask(u32 mask)
|
|
{
|
|
return sys_umask((int)mask);
|
|
}
|
|
|
|
#ifdef CONFIG_SYSCTL_SYSCALL
|
|
struct __sysctl_args32 {
|
|
u32 name;
|
|
int nlen;
|
|
u32 oldval;
|
|
u32 oldlenp;
|
|
u32 newval;
|
|
u32 newlen;
|
|
u32 __unused[4];
|
|
};
|
|
|
|
asmlinkage long compat_sys_sysctl(struct __sysctl_args32 __user *args)
|
|
{
|
|
struct __sysctl_args32 tmp;
|
|
int error;
|
|
size_t oldlen;
|
|
size_t __user *oldlenp = NULL;
|
|
unsigned long addr = (((unsigned long)&args->__unused[0]) + 7) & ~7;
|
|
|
|
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. */
|
|
oldlenp = (size_t __user *)addr;
|
|
if (get_user(oldlen, (compat_size_t __user *)compat_ptr(tmp.oldlenp)) ||
|
|
put_user(oldlen, oldlenp))
|
|
return -EFAULT;
|
|
}
|
|
|
|
lock_kernel();
|
|
error = do_sysctl(compat_ptr(tmp.name), tmp.nlen,
|
|
compat_ptr(tmp.oldval), oldlenp,
|
|
compat_ptr(tmp.newval), tmp.newlen);
|
|
unlock_kernel();
|
|
if (oldlenp) {
|
|
if (!error) {
|
|
if (get_user(oldlen, oldlenp) ||
|
|
put_user(oldlen, (compat_size_t __user *)compat_ptr(tmp.oldlenp)))
|
|
error = -EFAULT;
|
|
}
|
|
copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused));
|
|
}
|
|
return error;
|
|
}
|
|
#endif
|
|
|
|
unsigned long compat_sys_mmap2(unsigned long addr, size_t len,
|
|
unsigned long prot, unsigned long flags,
|
|
unsigned long fd, unsigned long pgoff)
|
|
{
|
|
/* This should remain 12 even if PAGE_SIZE changes */
|
|
return sys_mmap(addr, len, prot, flags, fd, pgoff << 12);
|
|
}
|
|
|
|
long compat_sys_tgkill(u32 tgid, u32 pid, int sig)
|
|
{
|
|
/* sign extend tgid, pid */
|
|
return sys_tgkill((int)tgid, (int)pid, sig);
|
|
}
|
|
|
|
/*
|
|
* long long munging:
|
|
* The 32 bit ABI passes long longs in an odd even register pair.
|
|
*/
|
|
|
|
compat_ssize_t compat_sys_pread64(unsigned int fd, char __user *ubuf, compat_size_t count,
|
|
u32 reg6, u32 poshi, u32 poslo)
|
|
{
|
|
return sys_pread64(fd, ubuf, count, ((loff_t)poshi << 32) | poslo);
|
|
}
|
|
|
|
compat_ssize_t compat_sys_pwrite64(unsigned int fd, char __user *ubuf, compat_size_t count,
|
|
u32 reg6, u32 poshi, u32 poslo)
|
|
{
|
|
return sys_pwrite64(fd, ubuf, count, ((loff_t)poshi << 32) | poslo);
|
|
}
|
|
|
|
compat_ssize_t compat_sys_readahead(int fd, u32 r4, u32 offhi, u32 offlo, u32 count)
|
|
{
|
|
return sys_readahead(fd, ((loff_t)offhi << 32) | offlo, count);
|
|
}
|
|
|
|
asmlinkage int compat_sys_truncate64(const char __user * path, u32 reg4,
|
|
unsigned long high, unsigned long low)
|
|
{
|
|
return sys_truncate(path, (high << 32) | low);
|
|
}
|
|
|
|
asmlinkage int compat_sys_ftruncate64(unsigned int fd, u32 reg4, unsigned long high,
|
|
unsigned long low)
|
|
{
|
|
return sys_ftruncate(fd, (high << 32) | low);
|
|
}
|
|
|
|
long ppc32_lookup_dcookie(u32 cookie_high, u32 cookie_low, char __user *buf,
|
|
size_t len)
|
|
{
|
|
return sys_lookup_dcookie((u64)cookie_high << 32 | cookie_low,
|
|
buf, len);
|
|
}
|
|
|
|
long ppc32_fadvise64(int fd, u32 unused, u32 offset_high, u32 offset_low,
|
|
size_t len, int advice)
|
|
{
|
|
return sys_fadvise64(fd, (u64)offset_high << 32 | offset_low, len,
|
|
advice);
|
|
}
|
|
|
|
asmlinkage long compat_sys_add_key(const char __user *_type,
|
|
const char __user *_description,
|
|
const void __user *_payload,
|
|
u32 plen,
|
|
u32 ringid)
|
|
{
|
|
return sys_add_key(_type, _description, _payload, plen, ringid);
|
|
}
|
|
|
|
asmlinkage long compat_sys_request_key(const char __user *_type,
|
|
const char __user *_description,
|
|
const char __user *_callout_info,
|
|
u32 destringid)
|
|
{
|
|
return sys_request_key(_type, _description, _callout_info, destringid);
|
|
}
|
|
|