/* $Id: sys_sparc32.c,v 1.184 2002/02/09 19:49:31 davem Exp $
* sys_sparc32.c: Conversion between 32bit and 64bit native syscalls.
*
* Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
* Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
*
* These routines maintain argument size conversion between 32bit and 64bit
* environment.
*/
#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/fs.h>
#include <linux/mm.h>
#include <linux/file.h>
#include <linux/signal.h>
#include <linux/resource.h>
#include <linux/times.h>
#include <linux/utsname.h>
#include <linux/timex.h>
#include <linux/smp.h>
#include <linux/smp_lock.h>
#include <linux/sem.h>
#include <linux/msg.h>
#include <linux/shm.h>
#include <linux/slab.h>
#include <linux/uio.h>
#include <linux/nfs_fs.h>
#include <linux/quota.h>
#include <linux/module.h>
#include <linux/sunrpc/svc.h>
#include <linux/nfsd/nfsd.h>
#include <linux/nfsd/cache.h>
#include <linux/nfsd/xdr.h>
#include <linux/nfsd/syscall.h>
#include <linux/poll.h>
#include <linux/personality.h>
#include <linux/stat.h>
#include <linux/filter.h>
#include <linux/highmem.h>
#include <linux/highuid.h>
#include <linux/mman.h>
#include <linux/ipv6.h>
#include <linux/in.h>
#include <linux/icmpv6.h>
#include <linux/syscalls.h>
#include <linux/sysctl.h>
#include <linux/binfmts.h>
#include <linux/dnotify.h>
#include <linux/security.h>
#include <linux/compat.h>
#include <linux/vfs.h>
#include <linux/netfilter_ipv4/ip_tables.h>
#include <linux/ptrace.h>
#include <linux/highuid.h>
#include <asm/types.h>
#include <asm/ipc.h>
#include <asm/uaccess.h>
#include <asm/fpumacro.h>
#include <asm/semaphore.h>
#include <asm/mmu_context.h>
asmlinkage long sys32_chown16(const char __user * filename, u16 user, u16 group)
{
return sys_chown(filename, low2highuid(user), low2highgid(group));
}
asmlinkage long sys32_lchown16(const char __user * filename, u16 user, u16 group)
{
return sys_lchown(filename, low2highuid(user), low2highgid(group));
}
asmlinkage long sys32_fchown16(unsigned int fd, u16 user, u16 group)
{
return sys_fchown(fd, low2highuid(user), low2highgid(group));
}
asmlinkage long sys32_setregid16(u16 rgid, u16 egid)
{
return sys_setregid(low2highgid(rgid), low2highgid(egid));
}
asmlinkage long sys32_setgid16(u16 gid)
{
return sys_setgid((gid_t)gid);
}
asmlinkage long sys32_setreuid16(u16 ruid, u16 euid)
{
return sys_setreuid(low2highuid(ruid), low2highuid(euid));
}
asmlinkage long sys32_setuid16(u16 uid)
{
return sys_setuid((uid_t)uid);
}
asmlinkage long sys32_setresuid16(u16 ruid, u16 euid, u16 suid)
{
return sys_setresuid(low2highuid(ruid), low2highuid(euid),
low2highuid(suid));
}
asmlinkage long sys32_getresuid16(u16 __user *ruid, u16 __user *euid, u16 __user *suid)
{
int retval;
if (!(retval = put_user(high2lowuid(current->uid), ruid)) &&
!(retval = put_user(high2lowuid(current->euid), euid)))
retval = put_user(high2lowuid(current->suid), suid);
return retval;
}
asmlinkage long sys32_setresgid16(u16 rgid, u16 egid, u16 sgid)
{
return sys_setresgid(low2highgid(rgid), low2highgid(egid),
low2highgid(sgid));
}
asmlinkage long sys32_getresgid16(u16 __user *rgid, u16 __user *egid, u16 __user *sgid)
{
int retval;
if (!(retval = put_user(high2lowgid(current->gid), rgid)) &&
!(retval = put_user(high2lowgid(current->egid), egid)))
retval = put_user(high2lowgid(current->sgid), sgid);
return retval;
}
asmlinkage long sys32_setfsuid16(u16 uid)
{
return sys_setfsuid((uid_t)uid);
}
asmlinkage long sys32_setfsgid16(u16 gid)
{
return sys_setfsgid((gid_t)gid);
}
static int groups16_to_user(u16 __user *grouplist, struct group_info *group_info)
{
int i;
u16 group;
for (i = 0; i < group_info->ngroups; i++) {
group = (u16)GROUP_AT(group_info, i);
if (put_user(group, grouplist+i))
return -EFAULT;
}
return 0;
}
static int groups16_from_user(struct group_info *group_info, u16 __user *grouplist)
{
int i;
u16 group;
for (i = 0; i < group_info->ngroups; i++) {
if (get_user(group, grouplist+i))
return -EFAULT;
GROUP_AT(group_info, i) = (gid_t)group;
}
return 0;
}
asmlinkage long sys32_getgroups16(int gidsetsize, u16 __user *grouplist)
{
int i;
if (gidsetsize < 0)
return -EINVAL;
get_group_info(current->group_info);
i = current->group_info->ngroups;
if (gidsetsize) {
if (i > gidsetsize) {
i = -EINVAL;
goto out;
}
if (groups16_to_user(grouplist, current->group_info)) {
i = -EFAULT;
goto out;
}
}
out:
put_group_info(current->group_info);
return i;
}
asmlinkage long sys32_setgroups16(int gidsetsize, u16 __user *grouplist)
{
struct group_info *group_info;
int retval;
if (!capable(CAP_SETGID))
return -EPERM;
if ((unsigned)gidsetsize > NGROUPS_MAX)
return -EINVAL;
group_info = groups_alloc(gidsetsize);
if (!group_info)
return -ENOMEM;
retval = groups16_from_user(group_info, grouplist);
if (retval) {
put_group_info(group_info);
return retval;
}
retval = set_current_groups(group_info);
put_group_info(group_info);
return retval;
}
asmlinkage long sys32_getuid16(void)
{
return high2lowuid(current->uid);
}
asmlinkage long sys32_geteuid16(void)
{
return high2lowuid(current->euid);
}
asmlinkage long sys32_getgid16(void)
{
return high2lowgid(current->gid);
}
asmlinkage long sys32_getegid16(void)
{
return high2lowgid(current->egid);
}
/* 32-bit timeval and related flotsam. */
static long get_tv32(struct timeval *o, struct compat_timeval __user *i)
{
return (!access_ok(VERIFY_READ, tv32, sizeof(*tv32)) ||
(__get_user(o->tv_sec, &i->tv_sec) |
__get_user(o->tv_usec, &i->tv_usec)));
}
static inline long put_tv32(struct compat_timeval __user *o, struct timeval *i)
{
return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) ||
(__put_user(i->tv_sec, &o->tv_sec) |
__put_user(i->tv_usec, &o->tv_usec)));
}
struct msgbuf32 { s32 mtype; char mtext[1]; };
struct ipc_perm32 {
key_t key;
compat_uid_t uid;
compat_gid_t gid;
compat_uid_t cuid;
compat_gid_t cgid;
compat_mode_t mode;
unsigned short seq;
};
struct semid_ds32 {
struct ipc_perm32 sem_perm; /* permissions .. see ipc.h */
compat_time_t sem_otime; /* last semop time */
compat_time_t sem_ctime; /* last change time */
u32 sem_base; /* ptr to first semaphore in array */
u32 sem_pending; /* pending operations to be processed */
u32 sem_pending_last; /* last pending operation */
u32 undo; /* undo requests on this array */
unsigned short sem_nsems; /* no. of semaphores in array */
};
struct semid64_ds32 {
struct ipc64_perm sem_perm; /* this structure is the same on sparc32 and sparc64 */
unsigned int __pad1;
compat_time_t sem_otime;
unsigned int __pad2;
compat_time_t sem_ctime;
u32 sem_nsems;
u32 __unused1;
u32 __unused2;
};
struct msqid_ds32
{
struct ipc_perm32 msg_perm;
u32 msg_first;
u32 msg_last;
compat_time_t msg_stime;
compat_time_t msg_rtime;
compat_time_t msg_ctime;
u32 wwait;
u32 rwait;
unsigned short msg_cbytes;
unsigned short msg_qnum;
unsigned short msg_qbytes;
compat_ipc_pid_t msg_lspid;
compat_ipc_pid_t msg_lrpid;
};
struct msqid64_ds32 {
struct ipc64_perm msg_perm;
unsigned int __pad1;
compat_time_t msg_stime;
unsigned int __pad2;
compat_time_t msg_rtime;
unsigned int __pad3;
compat_time_t msg_ctime;
unsigned int msg_cbytes;
unsigned int msg_qnum;
unsigned int msg_qbytes;
compat_pid_t msg_lspid;
compat_pid_t msg_lrpid;
unsigned int __unused1;
unsigned int __unused2;
};
struct shmid_ds32 {
struct ipc_perm32 shm_perm;
int shm_segsz;
compat_time_t shm_atime;
compat_time_t shm_dtime;
compat_time_t shm_ctime;
compat_ipc_pid_t shm_cpid;
compat_ipc_pid_t shm_lpid;
unsigned short shm_nattch;
};
struct shmid64_ds32 {
struct ipc64_perm shm_perm;
unsigned int __pad1;
compat_time_t shm_atime;
unsigned int __pad2;
compat_time_t shm_dtime;
unsigned int __pad3;
compat_time_t shm_ctime;
compat_size_t shm_segsz;
compat_pid_t shm_cpid;
compat_pid_t shm_lpid;
unsigned int shm_nattch;
unsigned int __unused1;
unsigned int __unused2;
};
/*
* sys32_ipc() is the de-multiplexer for the SysV IPC calls in 32bit emulation..
*
* This is really horribly ugly.
*/
#define IPCOP_MASK(__x) (1UL << ((__x)&~IPC_64))
static int do_sys32_semctl(int first, int second, int third,
compat_uptr_t __user *uptr)
{
union semun fourth;
compat_uptr_t pad;
int err = -EINVAL;
if (!uptr)
goto out;
err = -EFAULT;
if (get_user(pad, uptr))
goto out;
if ((third & ~IPC_64) == SETVAL)
fourth.val = (int)pad;
else
fourth.__pad = compat_ptr(pad);
if (IPCOP_MASK (third) &
(IPCOP_MASK (IPC_INFO) | IPCOP_MASK (SEM_INFO) | IPCOP_MASK (GETVAL) |
IPCOP_MASK (GETPID) | IPCOP_MASK (GETNCNT) | IPCOP_MASK (GETZCNT) |
IPCOP_MASK (GETALL) | IPCOP_MASK (SETALL) | IPCOP_MASK (IPC_RMID))) {
err = sys_semctl (first, second, third, fourth);
} else if (third & IPC_64) {
struct semid64_ds s;
struct semid64_ds32 __user *usp = compat_ptr(pad);
mm_segment_t old_fs;
int need_back_translation;
if (third == (IPC_SET|IPC_64)) {
err = get_user (s.sem_perm.uid, &usp->sem_perm.uid);
err |= __get_user (s.sem_perm.gid, &usp->sem_perm.gid);
err |= __get_user (s.sem_perm.mode, &usp->sem_perm.mode);
if (err)
goto out;
fourth.__pad = (void __user *) &s;
}
need_back_translation =
(IPCOP_MASK (third) &
(IPCOP_MASK (SEM_STAT) | IPCOP_MASK (IPC_STAT))) != 0;
if (need_back_translation)
fourth.__pad = (void __user *) &s;
old_fs = get_fs ();
set_fs (KERNEL_DS);
err = sys_semctl (first, second, third, fourth);
set_fs (old_fs);
if (need_back_translation) {
int err2 = copy_to_user (&usp->sem_perm, &s.sem_perm, sizeof(struct ipc64_perm) + 2*sizeof(time_t));
err2 |= __put_user (s.sem_nsems, &usp->sem_nsems);
if (err2) err = -EFAULT;
}
} else {
struct semid_ds s;
struct semid_ds32 __user *usp = compat_ptr(pad);
mm_segment_t old_fs;
int need_back_translation;
if (third == IPC_SET) {
err = get_user (s.sem_perm.uid, &usp->sem_perm.uid);
err |= __get_user (s.sem_perm.gid, &usp->sem_perm.gid);
err |= __get_user (s.sem_perm.mode, &usp->sem_perm.mode);
if (err)
goto out;
fourth.__pad = (void __user *) &s;
}
need_back_translation =
(IPCOP_MASK (third) &
(IPCOP_MASK (SEM_STAT) | IPCOP_MASK (IPC_STAT))) != 0;
if (need_back_translation)
fourth.__pad = (void __user *) &s;
old_fs = get_fs ();
set_fs (KERNEL_DS);
err = sys_semctl (first, second, third, fourth);
set_fs (old_fs);
if (need_back_translation) {
int err2 = put_user (s.sem_perm.key, &usp->sem_perm.key);
err2 |= __put_user (high2lowuid(s.sem_perm.uid), &usp->sem_perm.uid);
err2 |= __put_user (high2lowgid(s.sem_perm.gid), &usp->sem_perm.gid);
err2 |= __put_user (high2lowuid(s.sem_perm.cuid), &usp->sem_perm.cuid);
err2 |= __put_user (high2lowgid(s.sem_perm.cgid), &usp->sem_perm.cgid);
err2 |= __put_user (s.sem_perm.mode, &usp->sem_perm.mode);
err2 |= __put_user (s.sem_perm.seq, &usp->sem_perm.seq);
err2 |= __put_user (s.sem_otime, &usp->sem_otime);
err2 |= __put_user (s.sem_ctime, &usp->sem_ctime);
err2 |= __put_user (s.sem_nsems, &usp->sem_nsems);
if (err2) err = -EFAULT;
}
}
out:
return err;
}
static int do_sys32_msgsnd(int first, int second, int third,
void __user *uptr)
{
struct msgbuf32 __user *up = uptr;
struct msgbuf *p;
mm_segment_t old_fs;
int err;
p = kmalloc(second + sizeof (struct msgbuf), GFP_USER);
if (!p)
return -ENOMEM;
err = -EFAULT;
if (get_user (p->mtype, &up->mtype) ||
__copy_from_user (p->mtext, &up->mtext, second))
goto out;
old_fs = get_fs ();
set_fs (KERNEL_DS);
err = sys_msgsnd (first, (struct msgbuf __user *) p,
second, third);
set_fs (old_fs);
out:
kfree (p);
return err;
}
static int do_sys32_msgrcv(int first, int second, int msgtyp, int third,
int version, void __user *uptr)
{
struct msgbuf32 __user *up;
struct msgbuf *p;
mm_segment_t old_fs;
int err;
if (!version) {
struct ipc_kludge __user *uipck = uptr;
struct ipc_kludge ipck;
err = -EINVAL;
if (!uptr)
goto out;
err = -EFAULT;
if (copy_from_user (&ipck, uipck,
sizeof (struct ipc_kludge)))
goto out;
uptr = compat_ptr(ipck.msgp);
msgtyp = ipck.msgtyp;
}
err = -ENOMEM;
p = kmalloc(second + sizeof (struct msgbuf), GFP_USER);
if (!p)
goto out;
old_fs = get_fs ();
set_fs (KERNEL_DS);
err = sys_msgrcv (first, (struct msgbuf __user *) p, second,
msgtyp, third);
set_fs (old_fs);
if (err < 0)
goto free_then_out;
up = uptr;
if (put_user (p->mtype, &up->mtype) ||
__copy_to_user (&up->mtext, p->mtext, err))
err = -EFAULT;
free_then_out:
kfree (p);
out:
return err;
}
static int do_sys32_msgctl(int first, int second, void __user *uptr)
{
int err;
if (IPCOP_MASK (second) &
(IPCOP_MASK (IPC_INFO) | IPCOP_MASK (MSG_INFO) |
IPCOP_MASK (IPC_RMID))) {
err = sys_msgctl (first, second, uptr);
} else if (second & IPC_64) {
struct msqid64_ds m;
struct msqid64_ds32 __user *up = uptr;
mm_segment_t old_fs;
if (second == (IPC_SET|IPC_64)) {
err = get_user (m.msg_perm.uid,
&up->msg_perm.uid);
err |= __get_user (m.msg_perm.gid,
&up->msg_perm.gid);
err |= __get_user (m.msg_perm.mode,
&up->msg_perm.mode);
err |= __get_user (m.msg_qbytes,
&up->msg_qbytes);
if (err)
goto out;
}
old_fs = get_fs ();
set_fs (KERNEL_DS);
err = sys_msgctl(first, second,
(struct msqid_ds __user *)&m);
set_fs (old_fs);
if (IPCOP_MASK (second) &
(IPCOP_MASK (MSG_STAT) | IPCOP_MASK (IPC_STAT))) {
int err2 = copy_to_user(&up->msg_perm,
&m.msg_perm,
(sizeof(struct ipc64_perm) + 3*sizeof(time_t)));
err2 |= __put_user (m.msg_cbytes,
&up->msg_cbytes);
err2 |= __put_user (m.msg_qnum, &up->msg_qnum);
err2 |= __put_user (m.msg_qbytes,
&up->msg_qbytes);
err2 |= __put_user (m.msg_lspid, &up->msg_lspid);
err2 |= __put_user (m.msg_lrpid, &up->msg_lrpid);
if (err2)
err = -EFAULT;
}
} else {
struct msqid_ds m;
struct msqid_ds32 __user *up = uptr;
mm_segment_t old_fs;
if (second == IPC_SET) {
err = get_user(m.msg_perm.uid,
&up->msg_perm.uid);
err |= __get_user(m.msg_perm.gid,
&up->msg_perm.gid);
err |= __get_user(m.msg_perm.mode,
&up->msg_perm.mode);
err |= __get_user(m.msg_qbytes,
&up->msg_qbytes);
if (err)
goto out;
}
old_fs = get_fs ();
set_fs (KERNEL_DS);
err = sys_msgctl(first, second,
(struct msqid_ds __user *) &m);
set_fs (old_fs);
if (IPCOP_MASK (second) &
(IPCOP_MASK (MSG_STAT) | IPCOP_MASK (IPC_STAT))) {
int err2 = put_user(m.msg_perm.key,
&up->msg_perm.key);
err2 |= __put_user(high2lowuid(m.msg_perm.uid),
&up->msg_perm.uid);
err2 |= __put_user(high2lowgid(m.msg_perm.gid),
&up->msg_perm.gid);
err2 |= __put_user(high2lowuid(m.msg_perm.cuid),
&up->msg_perm.cuid);
err2 |= __put_user(high2lowgid(m.msg_perm.cgid),
&up->msg_perm.cgid);
err2 |= __put_user(m.msg_perm.mode,
&up->msg_perm.mode);
err2 |= __put_user(m.msg_perm.seq,
&up->msg_perm.seq);
err2 |= __put_user(m.msg_stime, &up->msg_stime);
err2 |= __put_user(m.msg_rtime, &up->msg_rtime);
err2 |= __put_user(m.msg_ctime, &up->msg_ctime);
err2 |= __put_user(m.msg_cbytes,
&up->msg_cbytes);
err2 |= __put_user(m.msg_qnum, &up->msg_qnum);
err2 |= __put_user(m.msg_qbytes,
&up->msg_qbytes);
err2 |= __put_user(m.msg_lspid, &up->msg_lspid);
err2 |= __put_user(m.msg_lrpid, &up->msg_lrpid);
if (err2)
err = -EFAULT;
}
}
out:
return err;
}
static int do_sys32_shmat (int first, int second, int third, int version, void __user *uptr)
{
unsigned long raddr;
u32 __user *uaddr = compat_ptr((compat_uptr_t)third);
int err = -EINVAL;
if (version == 1)
goto out;
err = do_shmat (first, uptr, second, &raddr);
if (err)
goto out;
err = put_user (raddr, uaddr);
out:
return err;
}
static int do_sys32_shmctl(int first, int second, void __user *uptr)
{
int err;
if (IPCOP_MASK (second) &
(IPCOP_MASK (IPC_INFO) | IPCOP_MASK (SHM_LOCK) |
IPCOP_MASK (SHM_UNLOCK) | IPCOP_MASK (IPC_RMID))) {
if (second == (IPC_INFO|IPC_64)) {
/* So that we don't have to translate it */
second = IPC_INFO;
}
err = sys_shmctl(first, second, uptr);
} else if ((second & IPC_64) && second != (SHM_INFO|IPC_64)) {
struct shmid64_ds s;
struct shmid64_ds32 __user *up = uptr;
mm_segment_t old_fs;
if (second == (IPC_SET|IPC_64)) {
err = get_user(s.shm_perm.uid,
&up->shm_perm.uid);
err |= __get_user(s.shm_perm.gid,
&up->shm_perm.gid);
err |= __get_user(s.shm_perm.mode,
&up->shm_perm.mode);
if (err)
goto out;
}
old_fs = get_fs();
set_fs(KERNEL_DS);
err = sys_shmctl(first, second,
(struct shmid_ds __user *)&s);
set_fs(old_fs);
if (err < 0)
goto out;
/* Mask it even in this case so it becomes a CSE. */
if (IPCOP_MASK (second) &
(IPCOP_MASK (SHM_STAT) | IPCOP_MASK (IPC_STAT))) {
int err2 = copy_to_user(&up->shm_perm,
&s.shm_perm,
sizeof(struct ipc64_perm) + 3*sizeof(time_t));
err2 |= __put_user(s.shm_segsz, &up->shm_segsz);
err2 |= __put_user(s.shm_nattch,&up->shm_nattch);
err2 |= __put_user(s.shm_cpid, &up->shm_cpid);
err2 |= __put_user(s.shm_lpid, &up->shm_lpid);
if (err2)
err = -EFAULT;
}
} else {
struct shmid_ds s;
struct shmid_ds32 __user *up = uptr;
mm_segment_t old_fs;
second &= ~IPC_64;
if (second == IPC_SET) {
err = get_user(s.shm_perm.uid,
&up->shm_perm.uid);
err |= __get_user(s.shm_perm.gid,
&up->shm_perm.gid);
err |= __get_user(s.shm_perm.mode,
&up->shm_perm.mode);
if (err)
goto out;
}
old_fs = get_fs();
set_fs(KERNEL_DS);
err = sys_shmctl(first, second,
(struct shmid_ds __user *) &s);
set_fs(old_fs);
if (err < 0)
goto out;
/* Mask it even in this case so it becomes a CSE. */
if (second == SHM_INFO) {
struct shm_info32 {
int used_ids;
u32 shm_tot, shm_rss, shm_swp;
u32 swap_attempts, swap_successes;
};
struct shm_info32 __user *uip = uptr;
struct shm_info *kp = (struct shm_info *) &s;
int err2 = put_user(kp->used_ids,
&uip->used_ids);
err2 |= __put_user(kp->shm_tot, &uip->shm_tot);
err2 |= __put_user(kp->shm_rss, &uip->shm_rss);
err2 |= __put_user(kp->shm_swp, &uip->shm_swp);
err2 |= __put_user(kp->swap_attempts,
&uip->swap_attempts);
err2 |= __put_user(kp->swap_successes,
&uip->swap_successes);
if (err2)
err = -EFAULT;
} else if (IPCOP_MASK (second) &
(IPCOP_MASK (SHM_STAT) |
IPCOP_MASK (IPC_STAT))) {
int err2;
err2 = put_user(s.shm_perm.key,
&up->shm_perm.key);
err2 |= __put_user(high2lowuid(s.shm_perm.uid),
&up->shm_perm.uid);
err2 |= __put_user(high2lowuid(s.shm_perm.gid),
&up->shm_perm.gid);
err2 |= __put_user(high2lowuid(s.shm_perm.cuid),
&up->shm_perm.cuid);
err2 |= __put_user(high2lowuid(s.shm_perm.cgid),
&up->shm_perm.cgid);
err2 |= __put_user(s.shm_perm.mode,
&up->shm_perm.mode);
err2 |= __put_user(s.shm_perm.seq,
&up->shm_perm.seq);
err2 |= __put_user(s.shm_atime, &up->shm_atime);
err2 |= __put_user(s.shm_dtime, &up->shm_dtime);
err2 |= __put_user(s.shm_ctime, &up->shm_ctime);
err2 |= __put_user(s.shm_segsz, &up->shm_segsz);
err2 |= __put_user(s.shm_nattch,&up->shm_nattch);
err2 |= __put_user(s.shm_cpid, &up->shm_cpid);
err2 |= __put_user(s.shm_lpid, &up->shm_lpid);
if (err2)
err = -EFAULT;
}
}
out:
return err;
}
static int sys32_semtimedop(int semid, struct sembuf __user *tsems,
int nsems,
const struct compat_timespec __user *timeout32)
{
struct compat_timespec t32;
struct timespec __user *t64;
t64 = compat_alloc_user_space(sizeof(*t64));
if (copy_from_user(&t32, timeout32, sizeof(t32)))
return -EFAULT;
if (put_user(t32.tv_sec, &t64->tv_sec) ||
put_user(t32.tv_nsec, &t64->tv_nsec))
return -EFAULT;
return sys_semtimedop(semid, tsems, nsems, t64);
}
asmlinkage long compat_sys_ipc(u32 call, int first, int second, int third, compat_uptr_t __ptr, u32 fifth)
{
int version, err;
void __user *ptr = compat_ptr(__ptr);
version = call >> 16; /* hack for backward compatibility */
call &= 0xffff;
if (call <= SEMCTL) {
switch (call) {
case SEMOP:
/* struct sembuf is the same on 32 and 64 :)) */
err = sys_semtimedop (first, ptr, second, NULL);
goto out;
case SEMTIMEDOP:
err = sys32_semtimedop(first, ptr, second,
compat_ptr(fifth));
case SEMGET:
err = sys_semget(first, second, third);
goto out;
case SEMCTL:
err = do_sys32_semctl(first, second, third, ptr);
goto out;
default:
err = -ENOSYS;
goto out;
};
}
if (call <= MSGCTL) {
switch (call) {
case MSGSND:
err = do_sys32_msgsnd(first, second, third, ptr);
goto out;
case MSGRCV:
err = do_sys32_msgrcv(first, second, fifth,
third, version, ptr);
goto out;
case MSGGET:
err = sys_msgget((key_t) first, second);
goto out;
case MSGCTL:
err = do_sys32_msgctl(first, second, ptr);
goto out;
default:
err = -ENOSYS;
goto out;
};
}
if (call <= SHMCTL) {
switch (call) {
case SHMAT:
err = do_sys32_shmat(first, second, third,
version, ptr);
goto out;
case SHMDT:
err = sys_shmdt(ptr);
goto out;
case SHMGET:
err = sys_shmget(first, second, third);
goto out;
case SHMCTL:
err = do_sys32_shmctl(first, second, ptr);
goto out;
default:
err = -ENOSYS;
goto out;
};
}
err = -ENOSYS;
out:
return err;
}
asmlinkage long sys32_truncate64(const char __user * path, unsigned long high, unsigned long low)
{
if ((int)high < 0)
return -EINVAL;
else
return sys_truncate(path, (high << 32) | low);
}
asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long high, unsigned long low)
{
if ((int)high < 0)
return -EINVAL;
else
return sys_ftruncate(fd, (high << 32) | low);
}
/* readdir & getdents */
#define NAME_OFFSET(de) ((int) ((de)->d_name - (char __user *) (de)))
#define ROUND_UP(x) (((x)+sizeof(u32)-1) & ~(sizeof(u32)-1))
struct old_linux_dirent32 {
u32 d_ino;
u32 d_offset;
unsigned short d_namlen;
char d_name[1];
};
struct readdir_callback32 {
struct old_linux_dirent32 __user * dirent;
int count;
};
static int fillonedir(void * __buf, const char * name, int namlen,
loff_t offset, ino_t ino, unsigned int d_type)
{
struct readdir_callback32 * buf = (struct readdir_callback32 *) __buf;
struct old_linux_dirent32 __user * dirent;
if (buf->count)
return -EINVAL;
buf->count++;
dirent = buf->dirent;
put_user(ino, &dirent->d_ino);
put_user(offset, &dirent->d_offset);
put_user(namlen, &dirent->d_namlen);
copy_to_user(dirent->d_name, name, namlen);
put_user(0, dirent->d_name + namlen);
return 0;
}
asmlinkage long old32_readdir(unsigned int fd, struct old_linux_dirent32 __user *dirent, unsigned int count)
{
int error = -EBADF;
struct file * file;
struct readdir_callback32 buf;
file = fget(fd);
if (!file)
goto out;
buf.count = 0;
buf.dirent = dirent;
error = vfs_readdir(file, fillonedir, &buf);
if (error < 0)
goto out_putf;
error = buf.count;
out_putf:
fput(file);
out:
return error;
}
struct linux_dirent32 {
u32 d_ino;
u32 d_off;
unsigned short d_reclen;
char d_name[1];
};
struct getdents_callback32 {
struct linux_dirent32 __user *current_dir;
struct linux_dirent32 __user *previous;
int count;
int error;
};
static int filldir(void * __buf, const char * name, int namlen, loff_t offset, ino_t ino,
unsigned int d_type)
{
struct linux_dirent32 __user * dirent;
struct getdents_callback32 * buf = (struct getdents_callback32 *) __buf;
int reclen = ROUND_UP(NAME_OFFSET(dirent) + namlen + 2);
buf->error = -EINVAL; /* only used if we fail.. */
if (reclen > buf->count)
return -EINVAL;
dirent = buf->previous;
if (dirent)
put_user(offset, &dirent->d_off);
dirent = buf->current_dir;
buf->previous = dirent;
put_user(ino, &dirent->d_ino);
put_user(reclen, &dirent->d_reclen);
copy_to_user(dirent->d_name, name, namlen);
put_user(0, dirent->d_name + namlen);
put_user(d_type, (char __user *) dirent + reclen - 1);
dirent = (void __user *) dirent + reclen;
buf->current_dir = dirent;
buf->count -= reclen;
return 0;
}
asmlinkage long sys32_getdents(unsigned int fd, struct linux_dirent32 __user *dirent, unsigned int count)
{
struct file * file;
struct linux_dirent32 __user *lastdirent;
struct getdents_callback32 buf;
int error = -EBADF;
file = fget(fd);
if (!file)
goto out;
buf.current_dir = dirent;
buf.previous = NULL;
buf.count = count;
buf.error = 0;
error = vfs_readdir(file, filldir, &buf);
if (error < 0)
goto out_putf;
lastdirent = buf.previous;
error = buf.error;
if (lastdirent) {
put_user(file->f_pos, &lastdirent->d_off);
error = count - buf.count;
}
out_putf:
fput(file);
out:
return error;
}
/* end of readdir & getdents */
int cp_compat_stat(struct kstat *stat, struct compat_stat __user *statbuf)
{
int err;
if (stat->size > MAX_NON_LFS || !old_valid_dev(stat->dev) ||
!old_valid_dev(stat->rdev))
return -EOVERFLOW;
err = put_user(old_encode_dev(stat->dev), &statbuf->st_dev);
err |= put_user(stat->ino, &statbuf->st_ino);
err |= put_user(stat->mode, &statbuf->st_mode);
err |= put_user(stat->nlink, &statbuf->st_nlink);
err |= put_user(high2lowuid(stat->uid), &statbuf->st_uid);
err |= put_user(high2lowgid(stat->gid), &statbuf->st_gid);
err |= put_user(old_encode_dev(stat->rdev), &statbuf->st_rdev);
err |= put_user(stat->size, &statbuf->st_size);
err |= put_user(stat->atime.tv_sec, &statbuf->st_atime);
err |= put_user(0, &statbuf->__unused1);
err |= put_user(stat->mtime.tv_sec, &statbuf->st_mtime);
err |= put_user(0, &statbuf->__unused2);
err |= put_user(stat->ctime.tv_sec, &statbuf->st_ctime);
err |= put_user(0, &statbuf->__unused3);
err |= put_user(stat->blksize, &statbuf->st_blksize);
err |= put_user(stat->blocks, &statbuf->st_blocks);
err |= put_user(0, &statbuf->__unused4[0]);
err |= put_user(0, &statbuf->__unused4[1]);
return err;
}
asmlinkage long compat_sys_sysfs(int option, u32 arg1, u32 arg2)
{
return sys_sysfs(option, arg1, arg2);
}
struct sysinfo32 {
s32 uptime;
u32 loads[3];
u32 totalram;
u32 freeram;
u32 sharedram;
u32 bufferram;
u32 totalswap;
u32 freeswap;
unsigned short procs;
unsigned short pad;
u32 totalhigh;
u32 freehigh;
u32 mem_unit;
char _f[20-2*sizeof(int)-sizeof(int)];
};
asmlinkage long sys32_sysinfo(struct sysinfo32 __user *info)
{
struct sysinfo s;
int ret, err;
int bitcount = 0;
mm_segment_t old_fs = get_fs ();
set_fs(KERNEL_DS);
ret = sys_sysinfo((struct sysinfo __user *) &s);
set_fs(old_fs);
/* Check to see if any memory value is too large for 32-bit and
* scale down if needed.
*/
if ((s.totalram >> 32) || (s.totalswap >> 32)) {
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 sys32_rt_sigtimedwait(compat_sigset_t __user *uthese,
siginfo_t32 __user *uinfo,
struct compat_timespec __user *uts,
compat_size_t sigsetsize)
{
int ret, sig;
sigset_t these;
compat_sigset_t these32;
struct timespec ts;
siginfo_t info;
long timeout = 0;
/* XXX: Don't preclude handling different sized sigset_t's. */
if (sigsetsize != sizeof(sigset_t))
return -EINVAL;
if (copy_from_user (&these32, uthese, sizeof(compat_sigset_t)))
return -EFAULT;
switch (_NSIG_WORDS) {
case 4: these.sig[3] = these32.sig[6] | (((long)these32.sig[7]) << 32);
case 3: these.sig[2] = these32.sig[4] | (((long)these32.sig[5]) << 32);
case 2: these.sig[1] = these32.sig[2] | (((long)these32.sig[3]) << 32);
case 1: these.sig[0] = these32.sig[0] | (((long)these32.sig[1]) << 32);
}
/*
* Invert the set of allowed signals to get those we
* want to block.
*/
sigdelsetmask(&these, sigmask(SIGKILL)|sigmask(SIGSTOP));
signotset(&these);
if (uts) {
if (get_compat_timespec(&ts, uts))
return -EINVAL;
if (ts.tv_nsec >= 1000000000L || ts.tv_nsec < 0
|| ts.tv_sec < 0)
return -EINVAL;
}
spin_lock_irq(¤t->sighand->siglock);
sig = dequeue_signal(current, &these, &info);
if (!sig) {
timeout = MAX_SCHEDULE_TIMEOUT;
if (uts)
timeout = (timespec_to_jiffies(&ts)
+ (ts.tv_sec || ts.tv_nsec));
if (timeout) {
/* None ready -- temporarily unblock those we're
* interested while we are sleeping in so that we'll
* be awakened when they arrive. */
current->real_blocked = current->blocked;
sigandsets(¤t->blocked, ¤t->blocked, &these);
recalc_sigpending();
spin_unlock_irq(¤t->sighand->siglock);
current->state = TASK_INTERRUPTIBLE;
timeout = schedule_timeout(timeout);
spin_lock_irq(¤t->sighand->siglock);
sig = dequeue_signal(current, &these, &info);
current->blocked = current->real_blocked;
siginitset(¤t->real_blocked, 0);
recalc_sigpending();
}
}
spin_unlock_irq(¤t->sighand->siglock);
if (sig) {
ret = sig;
if (uinfo) {
if (copy_siginfo_to_user32(uinfo, &info))
ret = -EFAULT;
}
} else {
ret = -EAGAIN;
if (timeout)
ret = -EINTR;
}
return ret;
}
asmlinkage long compat_sys_rt_sigqueueinfo(int pid, int sig,
siginfo_t32 __user *uinfo)
{
siginfo_t info;
int ret;
mm_segment_t old_fs = get_fs();
if (copy_from_user (&info, uinfo, 3*sizeof(int)) ||
copy_from_user (info._sifields._pad, uinfo->_sifields._pad, SI_PAD_SIZE))
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 = (void *) (long) u_handler;
ret |= __get_user(u_restorer, &act->sa_restorer);
new_ka.sa.sa_restorer = (void *) (long) 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((long)old_ka.sa.sa_handler, &oact->sa_handler);
ret |= __put_user((long)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 = (void *) (long) 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 = (void *) (long) 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((long)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((long)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;
current->ptrace &= ~PT_DTRACE;
}
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(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;
}
/* Handle adjtimex compatibility. */
struct timex32 {
u32 modes;
s32 offset, freq, maxerror, esterror;
s32 status, constant, precision, tolerance;
struct compat_timeval time;
s32 tick;
s32 ppsfreq, jitter, shift, stabil;
s32 jitcnt, calcnt, errcnt, stbcnt;
s32 :32; s32 :32; s32 :32; s32 :32;
s32 :32; s32 :32; s32 :32; s32 :32;
s32 :32; s32 :32; s32 :32; s32 :32;
};
extern int do_adjtimex(struct timex *);
asmlinkage long sys32_adjtimex(struct timex32 __user *utp)
{
struct timex txc;
int ret;
memset(&txc, 0, sizeof(struct timex));
if (get_user(txc.modes, &utp->modes) ||
__get_user(txc.offset, &utp->offset) ||
__get_user(txc.freq, &utp->freq) ||
__get_user(txc.maxerror, &utp->maxerror) ||
__get_user(txc.esterror, &utp->esterror) ||
__get_user(txc.status, &utp->status) ||
__get_user(txc.constant, &utp->constant) ||
__get_user(txc.precision, &utp->precision) ||
__get_user(txc.tolerance, &utp->tolerance) ||
__get_user(txc.time.tv_sec, &utp->time.tv_sec) ||
__get_user(txc.time.tv_usec, &utp->time.tv_usec) ||
__get_user(txc.tick, &utp->tick) ||
__get_user(txc.ppsfreq, &utp->ppsfreq) ||
__get_user(txc.jitter, &utp->jitter) ||
__get_user(txc.shift, &utp->shift) ||
__get_user(txc.stabil, &utp->stabil) ||
__get_user(txc.jitcnt, &utp->jitcnt) ||
__get_user(txc.calcnt, &utp->calcnt) ||
__get_user(txc.errcnt, &utp->errcnt) ||
__get_user(txc.stbcnt, &utp->stbcnt))
return -EFAULT;
ret = do_adjtimex(&txc);
if (put_user(txc.modes, &utp->modes) ||
__put_user(txc.offset, &utp->offset) ||
__put_user(txc.freq, &utp->freq) ||
__put_user(txc.maxerror, &utp->maxerror) ||
__put_user(txc.esterror, &utp->esterror) ||
__put_user(txc.status, &utp->status) ||
__put_user(txc.constant, &utp->constant) ||
__put_user(txc.precision, &utp->precision) ||
__put_user(txc.tolerance, &utp->tolerance) ||
__put_user(txc.time.tv_sec, &utp->time.tv_sec) ||
__put_user(txc.time.tv_usec, &utp->time.tv_usec) ||
__put_user(txc.tick, &utp->tick) ||
__put_user(txc.ppsfreq, &utp->ppsfreq) ||
__put_user(txc.jitter, &utp->jitter) ||
__put_user(txc.shift, &utp->shift) ||
__put_user(txc.stabil, &utp->stabil) ||
__put_user(txc.jitcnt, &utp->jitcnt) ||
__put_user(txc.calcnt, &utp->calcnt) ||
__put_user(txc.errcnt, &utp->errcnt) ||
__put_user(txc.stbcnt, &utp->stbcnt))
ret = -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)
{
char * tmp;
int fd, error;
tmp = getname(filename);
fd = PTR_ERR(tmp);
if (!IS_ERR(tmp)) {
fd = get_unused_fd();
if (fd >= 0) {
struct file * f = filp_open(tmp, flags, mode);
error = PTR_ERR(f);
if (IS_ERR(f))
goto out_error;
fd_install(fd, f);
}
out:
putname(tmp);
}
return fd;
out_error:
put_unused_fd(fd);
fd = error;
goto out;
}
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 > 0xf0000000UL || new_len > 0xf0000000UL)
goto out;
if (addr > 0xf0000000UL - old_len)
goto out;
down_write(¤t->mm->mmap_sem);
if (flags & MREMAP_FIXED) {
if (new_addr > 0xf0000000UL - new_len)
goto out_sem;
} else if (addr > 0xf0000000UL - 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;
}
copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused));
}
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);
}
extern asmlinkage long
sys_timer_create(clockid_t which_clock,
struct sigevent __user *timer_event_spec,
timer_t __user *created_timer_id);
long
sys32_timer_create(u32 clock, struct sigevent32 __user *se32,
timer_t __user *timer_id)
{
struct sigevent se;
mm_segment_t oldfs;
timer_t t;
long err;
if (se32 == NULL)
return sys_timer_create(clock, NULL, timer_id);
memset(&se, 0, sizeof(struct sigevent));
if (get_user(se.sigev_value.sival_int, &se32->sigev_value.sival_int) ||
__get_user(se.sigev_signo, &se32->sigev_signo) ||
__get_user(se.sigev_notify, &se32->sigev_notify) ||
__copy_from_user(&se._sigev_un._pad, &se32->_sigev_un._pad,
sizeof(se._sigev_un._pad)))
return -EFAULT;
if (!access_ok(VERIFY_WRITE,timer_id,sizeof(timer_t)))
return -EFAULT;
oldfs = get_fs();
set_fs(KERNEL_DS);
err = sys_timer_create(clock,
(struct sigevent __user *) &se,
(timer_t __user *) &t);
set_fs(oldfs);
if (!err)
err = __put_user (t, timer_id);
return err;
}
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