1079 lines
28 KiB
C
1079 lines
28 KiB
C
/* $Id: sys_sparc32.c,v 1.184 2002/02/09 19:49:31 davem Exp $
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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 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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#include <linux/config.h>
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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/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/slab.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/module.h>
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#include <linux/sunrpc/svc.h>
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#include <linux/nfsd/nfsd.h>
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#include <linux/nfsd/cache.h>
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#include <linux/nfsd/xdr.h>
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#include <linux/nfsd/syscall.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/netfilter_ipv4/ip_tables.h>
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#include <linux/ptrace.h>
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#include <linux/highuid.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/fpumacro.h>
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#include <asm/semaphore.h>
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#include <asm/mmu_context.h>
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#include <asm/a.out.h>
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asmlinkage long sys32_chown16(const char __user * filename, u16 user, u16 group)
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{
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return sys_chown(filename, low2highuid(user), low2highgid(group));
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}
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asmlinkage long sys32_lchown16(const char __user * filename, u16 user, u16 group)
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{
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return sys_lchown(filename, low2highuid(user), low2highgid(group));
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}
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asmlinkage long sys32_fchown16(unsigned int fd, u16 user, u16 group)
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{
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return sys_fchown(fd, low2highuid(user), low2highgid(group));
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}
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asmlinkage long sys32_setregid16(u16 rgid, u16 egid)
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{
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return sys_setregid(low2highgid(rgid), low2highgid(egid));
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}
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asmlinkage long sys32_setgid16(u16 gid)
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{
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return sys_setgid((gid_t)gid);
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}
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asmlinkage long sys32_setreuid16(u16 ruid, u16 euid)
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{
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return sys_setreuid(low2highuid(ruid), low2highuid(euid));
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}
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asmlinkage long sys32_setuid16(u16 uid)
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{
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return sys_setuid((uid_t)uid);
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}
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asmlinkage long sys32_setresuid16(u16 ruid, u16 euid, u16 suid)
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{
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return sys_setresuid(low2highuid(ruid), low2highuid(euid),
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low2highuid(suid));
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}
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asmlinkage long sys32_getresuid16(u16 __user *ruid, u16 __user *euid, u16 __user *suid)
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{
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int retval;
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if (!(retval = put_user(high2lowuid(current->uid), ruid)) &&
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!(retval = put_user(high2lowuid(current->euid), euid)))
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retval = put_user(high2lowuid(current->suid), suid);
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return retval;
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}
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asmlinkage long sys32_setresgid16(u16 rgid, u16 egid, u16 sgid)
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{
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return sys_setresgid(low2highgid(rgid), low2highgid(egid),
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low2highgid(sgid));
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}
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asmlinkage long sys32_getresgid16(u16 __user *rgid, u16 __user *egid, u16 __user *sgid)
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{
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int retval;
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if (!(retval = put_user(high2lowgid(current->gid), rgid)) &&
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!(retval = put_user(high2lowgid(current->egid), egid)))
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retval = put_user(high2lowgid(current->sgid), sgid);
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return retval;
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}
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asmlinkage long sys32_setfsuid16(u16 uid)
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{
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return sys_setfsuid((uid_t)uid);
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}
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asmlinkage long sys32_setfsgid16(u16 gid)
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{
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return sys_setfsgid((gid_t)gid);
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}
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static int groups16_to_user(u16 __user *grouplist, struct group_info *group_info)
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{
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int i;
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u16 group;
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for (i = 0; i < group_info->ngroups; i++) {
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group = (u16)GROUP_AT(group_info, i);
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if (put_user(group, grouplist+i))
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return -EFAULT;
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}
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return 0;
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}
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static int groups16_from_user(struct group_info *group_info, u16 __user *grouplist)
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{
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int i;
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u16 group;
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for (i = 0; i < group_info->ngroups; i++) {
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if (get_user(group, grouplist+i))
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return -EFAULT;
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GROUP_AT(group_info, i) = (gid_t)group;
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}
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return 0;
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}
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asmlinkage long sys32_getgroups16(int gidsetsize, u16 __user *grouplist)
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{
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int i;
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if (gidsetsize < 0)
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return -EINVAL;
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get_group_info(current->group_info);
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i = current->group_info->ngroups;
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if (gidsetsize) {
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if (i > gidsetsize) {
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i = -EINVAL;
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goto out;
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}
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if (groups16_to_user(grouplist, current->group_info)) {
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i = -EFAULT;
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goto out;
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}
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}
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out:
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put_group_info(current->group_info);
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return i;
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}
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asmlinkage long sys32_setgroups16(int gidsetsize, u16 __user *grouplist)
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{
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struct group_info *group_info;
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int retval;
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if (!capable(CAP_SETGID))
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return -EPERM;
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if ((unsigned)gidsetsize > NGROUPS_MAX)
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return -EINVAL;
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group_info = groups_alloc(gidsetsize);
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if (!group_info)
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return -ENOMEM;
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retval = groups16_from_user(group_info, grouplist);
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if (retval) {
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put_group_info(group_info);
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return retval;
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}
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retval = set_current_groups(group_info);
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put_group_info(group_info);
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return retval;
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}
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asmlinkage long sys32_getuid16(void)
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{
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return high2lowuid(current->uid);
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}
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asmlinkage long sys32_geteuid16(void)
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{
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return high2lowuid(current->euid);
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}
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asmlinkage long sys32_getgid16(void)
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{
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return high2lowgid(current->gid);
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}
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asmlinkage long sys32_getegid16(void)
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{
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return high2lowgid(current->egid);
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}
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/* 32-bit timeval and related flotsam. */
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static long get_tv32(struct timeval *o, struct compat_timeval __user *i)
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{
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return (!access_ok(VERIFY_READ, i, sizeof(*i)) ||
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(__get_user(o->tv_sec, &i->tv_sec) |
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__get_user(o->tv_usec, &i->tv_usec)));
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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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#ifdef CONFIG_SYSVIPC
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asmlinkage long compat_sys_ipc(u32 call, u32 first, u32 second, u32 third, compat_uptr_t ptr, 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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asmlinkage long sys32_truncate64(const char __user * path, unsigned long high, unsigned long low)
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{
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if ((int)high < 0)
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return -EINVAL;
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else
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return sys_truncate(path, (high << 32) | low);
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}
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asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long high, unsigned long low)
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{
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if ((int)high < 0)
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return -EINVAL;
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else
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return sys_ftruncate(fd, (high << 32) | low);
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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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int err;
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if (stat->size > MAX_NON_LFS || !old_valid_dev(stat->dev) ||
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!old_valid_dev(stat->rdev))
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return -EOVERFLOW;
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err = put_user(old_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(high2lowuid(stat->uid), &statbuf->st_uid);
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err |= put_user(high2lowgid(stat->gid), &statbuf->st_gid);
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err |= put_user(old_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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int cp_compat_stat64(struct kstat *stat, 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(stat->uid, &statbuf->st_uid);
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err |= put_user(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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asmlinkage long compat_sys_stat64(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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asmlinkage long compat_sys_lstat64(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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|
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asmlinkage long compat_sys_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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|
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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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|
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asmlinkage long compat_sys_fstatat64(unsigned int dfd, 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 = -EINVAL;
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|
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if ((flag & ~AT_SYMLINK_NOFOLLOW) != 0)
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goto out;
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|
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if (flag & AT_SYMLINK_NOFOLLOW)
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error = vfs_lstat_fd(dfd, filename, &stat);
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else
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error = vfs_stat_fd(dfd, filename, &stat);
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if (!error)
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error = cp_compat_stat64(&stat, statbuf);
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out:
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return error;
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}
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asmlinkage long compat_sys_sysfs(int option, u32 arg1, u32 arg2)
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{
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return sys_sysfs(option, arg1, arg2);
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}
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|
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struct sysinfo32 {
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s32 uptime;
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u32 loads[3];
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u32 totalram;
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u32 freeram;
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u32 sharedram;
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u32 bufferram;
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u32 totalswap;
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u32 freeswap;
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unsigned short procs;
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unsigned short pad;
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u32 totalhigh;
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u32 freehigh;
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u32 mem_unit;
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char _f[20-2*sizeof(int)-sizeof(int)];
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};
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|
|
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asmlinkage long sys32_sysinfo(struct sysinfo32 __user *info)
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{
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struct sysinfo s;
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int ret, err;
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int bitcount = 0;
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mm_segment_t old_fs = get_fs ();
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|
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set_fs(KERNEL_DS);
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ret = sys_sysinfo((struct sysinfo __user *) &s);
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set_fs(old_fs);
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/* Check to see if any memory value is too large for 32-bit and
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* scale down if needed.
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*/
|
|
if ((s.totalram >> 32) || (s.totalswap >> 32)) {
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while (s.mem_unit < PAGE_SIZE) {
|
|
s.mem_unit <<= 1;
|
|
bitcount++;
|
|
}
|
|
s.totalram >>= bitcount;
|
|
s.freeram >>= bitcount;
|
|
s.sharedram >>= bitcount;
|
|
s.bufferram >>= bitcount;
|
|
s.totalswap >>= bitcount;
|
|
s.freeswap >>= bitcount;
|
|
s.totalhigh >>= bitcount;
|
|
s.freehigh >>= bitcount;
|
|
}
|
|
|
|
err = put_user (s.uptime, &info->uptime);
|
|
err |= __put_user (s.loads[0], &info->loads[0]);
|
|
err |= __put_user (s.loads[1], &info->loads[1]);
|
|
err |= __put_user (s.loads[2], &info->loads[2]);
|
|
err |= __put_user (s.totalram, &info->totalram);
|
|
err |= __put_user (s.freeram, &info->freeram);
|
|
err |= __put_user (s.sharedram, &info->sharedram);
|
|
err |= __put_user (s.bufferram, &info->bufferram);
|
|
err |= __put_user (s.totalswap, &info->totalswap);
|
|
err |= __put_user (s.freeswap, &info->freeswap);
|
|
err |= __put_user (s.procs, &info->procs);
|
|
err |= __put_user (s.totalhigh, &info->totalhigh);
|
|
err |= __put_user (s.freehigh, &info->freehigh);
|
|
err |= __put_user (s.mem_unit, &info->mem_unit);
|
|
if (err)
|
|
return -EFAULT;
|
|
return ret;
|
|
}
|
|
|
|
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;
|
|
|
|
if (sig < 0) {
|
|
set_thread_flag(TIF_NEWSIGNALS);
|
|
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;
|
|
|
|
/* All tasks which use RT signals (effectively) use
|
|
* new style signals.
|
|
*/
|
|
set_thread_flag(TIF_NEWSIGNALS);
|
|
|
|
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;
|
|
task_lock(current);
|
|
current->ptrace &= ~PT_DTRACE;
|
|
task_unlock(current);
|
|
}
|
|
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 */
|
|
|
|
/* Translations due to time_t size differences. Which affects all
|
|
sorts of things, like timeval and itimerval. */
|
|
|
|
extern struct timezone sys_tz;
|
|
|
|
asmlinkage long sys32_gettimeofday(struct compat_timeval __user *tv,
|
|
struct timezone __user *tz)
|
|
{
|
|
if (tv) {
|
|
struct timeval ktv;
|
|
do_gettimeofday(&ktv);
|
|
if (put_tv32(tv, &ktv))
|
|
return -EFAULT;
|
|
}
|
|
if (tz) {
|
|
if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
|
|
return -EFAULT;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static inline long get_ts32(struct timespec *o, struct compat_timeval __user *i)
|
|
{
|
|
long usec;
|
|
|
|
if (!access_ok(VERIFY_READ, i, sizeof(*i)))
|
|
return -EFAULT;
|
|
if (__get_user(o->tv_sec, &i->tv_sec))
|
|
return -EFAULT;
|
|
if (__get_user(usec, &i->tv_usec))
|
|
return -EFAULT;
|
|
o->tv_nsec = usec * 1000;
|
|
return 0;
|
|
}
|
|
|
|
asmlinkage long sys32_settimeofday(struct compat_timeval __user *tv,
|
|
struct timezone __user *tz)
|
|
{
|
|
struct timespec kts;
|
|
struct timezone ktz;
|
|
|
|
if (tv) {
|
|
if (get_ts32(&kts, tv))
|
|
return -EFAULT;
|
|
}
|
|
if (tz) {
|
|
if (copy_from_user(&ktz, tz, sizeof(ktz)))
|
|
return -EFAULT;
|
|
}
|
|
|
|
return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
|
|
}
|
|
|
|
asmlinkage long sys32_utimes(char __user *filename,
|
|
struct compat_timeval __user *tvs)
|
|
{
|
|
struct timeval ktvs[2];
|
|
|
|
if (tvs) {
|
|
if (get_tv32(&ktvs[0], tvs) ||
|
|
get_tv32(&ktvs[1], 1+tvs))
|
|
return -EFAULT;
|
|
}
|
|
|
|
return do_utimes(AT_FDCWD, filename, (tvs ? &ktvs[0] : NULL));
|
|
}
|
|
|
|
/* These are here just in case some old sparc32 binary calls it. */
|
|
asmlinkage long sys32_pause(void)
|
|
{
|
|
current->state = TASK_INTERRUPTIBLE;
|
|
schedule();
|
|
return -ERESTARTNOHAND;
|
|
}
|
|
|
|
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)
|
|
{
|
|
struct vm_area_struct *vma;
|
|
unsigned long ret = -EINVAL;
|
|
unsigned long new_addr = __new_addr;
|
|
|
|
if (old_len > STACK_TOP32 || new_len > STACK_TOP32)
|
|
goto out;
|
|
if (addr > STACK_TOP32 - old_len)
|
|
goto out;
|
|
down_write(¤t->mm->mmap_sem);
|
|
if (flags & MREMAP_FIXED) {
|
|
if (new_addr > STACK_TOP32 - new_len)
|
|
goto out_sem;
|
|
} else if (addr > STACK_TOP32 - new_len) {
|
|
unsigned long map_flags = 0;
|
|
struct file *file = NULL;
|
|
|
|
ret = -ENOMEM;
|
|
if (!(flags & MREMAP_MAYMOVE))
|
|
goto out_sem;
|
|
|
|
vma = find_vma(current->mm, addr);
|
|
if (vma) {
|
|
if (vma->vm_flags & VM_SHARED)
|
|
map_flags |= MAP_SHARED;
|
|
file = vma->vm_file;
|
|
}
|
|
|
|
/* MREMAP_FIXED checked above. */
|
|
new_addr = get_unmapped_area(file, addr, new_len,
|
|
vma ? vma->vm_pgoff : 0,
|
|
map_flags);
|
|
ret = new_addr;
|
|
if (new_addr & ~PAGE_MASK)
|
|
goto out_sem;
|
|
flags |= MREMAP_FIXED;
|
|
}
|
|
ret = do_mremap(addr, old_len, new_len, flags, new_addr);
|
|
out_sem:
|
|
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
|
|
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);
|
|
}
|