- 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);