-
-struct msgbuf32 {
- compat_long_t mtype;
- char mtext[1];
-};
-
-struct semid_ds32 {
- struct ipc_perm sem_perm;
- compat_time_t sem_otime;
- compat_time_t sem_ctime;
- compat_uptr_t sem_base;
- compat_uptr_t sem_pending;
- compat_uptr_t sem_pending_last;
- compat_uptr_t undo;
- unsigned short sem_nsems;
-};
-
-struct semid64_ds32 {
- struct ipc64_perm sem_perm;
- unsigned int __unused1;
- compat_time_t sem_otime;
- unsigned int __unused2;
- compat_time_t sem_ctime;
- compat_ulong_t sem_nsems;
- compat_ulong_t __unused3;
- compat_ulong_t __unused4;
-};
-
-struct msqid_ds32 {
- struct ipc_perm msg_perm;
- compat_uptr_t msg_first;
- compat_uptr_t msg_last;
- compat_time_t msg_stime;
- compat_time_t msg_rtime;
- compat_time_t msg_ctime;
- compat_ulong_t msg_lcbytes;
- compat_ulong_t msg_lqbytes;
- 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 __unused1;
- compat_time_t msg_stime;
- unsigned int __unused2;
- compat_time_t msg_rtime;
- unsigned int __unused3;
- compat_time_t msg_ctime;
- compat_ulong_t msg_cbytes;
- compat_ulong_t msg_qnum;
- compat_ulong_t msg_qbytes;
- compat_pid_t msg_lspid;
- compat_pid_t msg_lrpid;
- compat_ulong_t __unused4;
- compat_ulong_t __unused5;
-};
-
-struct shmid_ds32 {
- struct ipc_perm 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;
- unsigned short __unused;
- compat_uptr_t __unused2;
- compat_uptr_t __unused3;
-};
-
-struct shmid64_ds32 {
- struct ipc64_perm shm_perm;
- unsigned int __unused1;
- compat_time_t shm_atime;
- unsigned int __unused2;
- compat_time_t shm_dtime;
- unsigned int __unused3;
- compat_time_t shm_ctime;
- unsigned int __unused4;
- compat_size_t shm_segsz;
- compat_pid_t shm_cpid;
- compat_pid_t shm_lpid;
- compat_ulong_t shm_nattch;
- compat_ulong_t __unused5;
- compat_ulong_t __unused6;
-};
-
-/*
- * sys32_ipc() is the de-multiplexer for the SysV IPC calls in 32bit
- * emulation..
- *
- * This is really horribly ugly.
- */
-static long do_sys32_semctl(int first, int second, int third, void *uptr)
-{
- union semun fourth;
- u32 pad;
- int err, err2;
- mm_segment_t old_fs;
-
- if (!uptr)
- return -EINVAL;
- err = -EFAULT;
- if (get_user(pad, (u32 *)uptr))
- return err;
- if ((third & ~IPC_64) == SETVAL)
- fourth.val = (int)pad;
- else
- fourth.__pad = (void *)A(pad);
- switch (third & (~IPC_64)) {
-
- case IPC_INFO:
- case IPC_RMID:
- case SEM_INFO:
- case GETVAL:
- case GETPID:
- case GETNCNT:
- case GETZCNT:
- case GETALL:
- case SETALL:
- case SETVAL:
- err = sys_semctl(first, second, third, fourth);
- break;
-
- case IPC_STAT:
- case SEM_STAT:
- if (third & IPC_64) {
- struct semid64_ds s64;
- struct semid64_ds32 *usp;
-
- usp = (struct semid64_ds32 *)A(pad);
- fourth.__pad = &s64;
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_semctl(first, second, third, fourth);
- set_fs(old_fs);
- err2 = copy_to_user(&usp->sem_perm, &s64.sem_perm,
- sizeof(struct ipc64_perm));
- err2 |= __put_user(s64.sem_otime, &usp->sem_otime);
- err2 |= __put_user(s64.sem_ctime, &usp->sem_ctime);
- err2 |= __put_user(s64.sem_nsems, &usp->sem_nsems);
- if (err2)
- err = -EFAULT;
- } else {
- struct semid_ds s;
- struct semid_ds32 *usp;
-
- usp = (struct semid_ds32 *)A(pad);
- fourth.__pad = &s;
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_semctl(first, second, third, fourth);
- set_fs(old_fs);
- err2 = copy_to_user(&usp->sem_perm, &s.sem_perm,
- sizeof(struct ipc_perm));
- 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;
- }
- break;
-
- case IPC_SET:
- if (third & IPC_64) {
- struct semid64_ds s64;
- struct semid64_ds32 *usp;
-
- usp = (struct semid64_ds32 *)A(pad);
-
- err = get_user(s64.sem_perm.uid, &usp->sem_perm.uid);
- err |= __get_user(s64.sem_perm.gid,
- &usp->sem_perm.gid);
- err |= __get_user(s64.sem_perm.mode,
- &usp->sem_perm.mode);
- if (err)
- goto out;
- fourth.__pad = &s64;
-
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_semctl(first, second, third, fourth);
- set_fs(old_fs);
-
- } else {
- struct semid_ds s;
- struct semid_ds32 *usp;
-
- usp = (struct semid_ds32 *)A(pad);
-
- 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 = &s;
-
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_semctl(first, second, third, fourth);
- set_fs(old_fs);
- }
- break;
- default:
- err = -EINVAL;
- }
-out:
- return err;
-}
-
-#define MAXBUF (64*1024)
-
-static int
-do_sys32_msgsnd(int first, int second, int third, void *uptr)
-{
- struct msgbuf *p;
- struct msgbuf32 *up = (struct msgbuf32 *)uptr;
- mm_segment_t old_fs;
- int err;
-
- if (second < 0 || (second >= MAXBUF-sizeof(struct msgbuf)))
- return -EINVAL;
-
- p = kmalloc(second + sizeof(struct msgbuf), GFP_USER);
- if (!p)
- return -ENOMEM;
- err = get_user(p->mtype, &up->mtype);
- err |= copy_from_user(p->mtext, &up->mtext, second);
- if (err) {
- err = -EFAULT;
- goto out;
- }
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_msgsnd(first, 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 *uptr)
-{
- struct msgbuf32 *up;
- struct msgbuf *p;
- mm_segment_t old_fs;
- int err;
-
- if (second < 0 || (second >= MAXBUF-sizeof(struct msgbuf)))
- return -EINVAL;
-
- if (!version) {
- struct ipc_kludge_32 *uipck = (struct ipc_kludge_32 *)uptr;
- struct ipc_kludge_32 ipck;
-
- err = -EINVAL;
- if (!uptr)
- goto out;
- err = -EFAULT;
- if (copy_from_user(&ipck, uipck, sizeof(struct ipc_kludge_32)))
- goto out;
- uptr = (void *)A(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, p, second, msgtyp, third);
- set_fs(old_fs);
- if (err < 0)
- goto free_then_out;
- up = (struct msgbuf32 *)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 *uptr)
-{
- int err = -EINVAL, err2;
- mm_segment_t old_fs;
-
- switch (second & (~IPC_64)) {
-
- case IPC_INFO:
- case IPC_RMID:
- case MSG_INFO:
- err = sys_msgctl(first, second, (struct msqid_ds *)uptr);
- break;
-
- case IPC_SET:
- if (second & IPC_64) {
- struct msqid64_ds m64;
- struct msqid64_ds32 *up = (struct msqid64_ds32 *)uptr;
-
- err2 = copy_from_user(&m64.msg_perm, &up->msg_perm,
- sizeof(struct ipc64_perm));
- err2 |= __get_user(m64.msg_qbytes, &up->msg_qbytes);
- if (err2) {
- err = -EFAULT;
- break;
- }
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_msgctl(first, second,
- (struct msqid_ds *)&m64);
- set_fs(old_fs);
- } else {
- struct msqid_ds m;
- struct msqid_ds32 *up = (struct msqid_ds32 *)uptr;
-
- err2 = copy_from_user(&m.msg_perm, &up->msg_perm,
- sizeof(struct ipc_perm));
- err2 |= __get_user(m.msg_qbytes, &up->msg_qbytes);
- if (err2) {
- err = -EFAULT;
- break;
- }
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_msgctl(first, second, &m);
- set_fs(old_fs);
- }
- break;
-
- case IPC_STAT:
- case MSG_STAT:
- if (second & IPC_64) {
- struct msqid64_ds m64;
- struct msqid64_ds32 *up = (struct msqid64_ds32 *)uptr;
-
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_msgctl(first, second,
- (struct msqid_ds *)&m64);
- set_fs(old_fs);
-
- err2 = copy_to_user(&up->msg_perm, &m64.msg_perm,
- sizeof(struct ipc64_perm));
- err2 |= __put_user(m64.msg_stime, &up->msg_stime);
- err2 |= __put_user(m64.msg_rtime, &up->msg_rtime);
- err2 |= __put_user(m64.msg_ctime, &up->msg_ctime);
- err2 |= __put_user(m64.msg_cbytes, &up->msg_cbytes);
- err2 |= __put_user(m64.msg_qnum, &up->msg_qnum);
- err2 |= __put_user(m64.msg_qbytes, &up->msg_qbytes);
- err2 |= __put_user(m64.msg_lspid, &up->msg_lspid);
- err2 |= __put_user(m64.msg_lrpid, &up->msg_lrpid);
- if (err2)
- err = -EFAULT;
- } else {
- struct msqid64_ds m;
- struct msqid_ds32 *up = (struct msqid_ds32 *)uptr;
-
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_msgctl(first, second, (struct msqid_ds *)&m);
- set_fs(old_fs);
-
- err2 = copy_to_user(&up->msg_perm, &m.msg_perm,
- sizeof(struct ipc_perm));
- 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;
- }
- break;
- }
- return err;
-}
-
-static int
-do_sys32_shmat(int first, int second, int third, int version, void *uptr)
-{
- unsigned long raddr;
- u32 *uaddr = (u32 *)A((u32)third);
- int err = -EINVAL;
-
- if (version == 1)
- return err;
- err = do_shmat(first, uptr, second, &raddr);
- if (err)
- return err;
- err = put_user(raddr, uaddr);
- return err;
-}
-
-static int
-do_sys32_shmctl(int first, int second, void *uptr)
-{
- int err = -EINVAL, err2;
- mm_segment_t old_fs;
-
- switch (second & (~IPC_64)) {
-
- case IPC_INFO:
- case IPC_RMID:
- case SHM_LOCK:
- case SHM_UNLOCK:
- err = sys_shmctl(first, second, (struct shmid_ds *)uptr);
- break;
- case IPC_SET:
- if (second & IPC_64) {
- struct shmid64_ds32 *up = (struct shmid64_ds32 *)uptr;
- struct shmid64_ds s64;
-
- err = get_user(s64.shm_perm.uid, &up->shm_perm.uid);
- err |= __get_user(s64.shm_perm.gid, &up->shm_perm.gid);
- err |= __get_user(s64.shm_perm.mode,
- &up->shm_perm.mode);
- if (err)
- break;
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_shmctl(first, second,
- (struct shmid_ds *)&s64);
- set_fs(old_fs);
- } else {
- struct shmid_ds32 *up = (struct shmid_ds32 *)uptr;
- struct shmid_ds s;
-
- 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)
- break;
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_shmctl(first, second, &s);
- set_fs(old_fs);
- }
- break;
-
- case IPC_STAT:
- case SHM_STAT:
- if (second & IPC_64) {
- struct shmid64_ds32 *up = (struct shmid64_ds32 *)uptr;
- struct shmid64_ds s64;
-
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_shmctl(first, second,
- (struct shmid_ds *)&s64);
- set_fs(old_fs);
- if (err < 0)
- break;
-
- err2 = copy_to_user(&up->shm_perm, &s64.shm_perm,
- sizeof(struct ipc64_perm));
- err2 |= __put_user(s64.shm_atime, &up->shm_atime);
- err2 |= __put_user(s64.shm_dtime, &up->shm_dtime);
- err2 |= __put_user(s64.shm_ctime, &up->shm_ctime);
- err2 |= __put_user(s64.shm_segsz, &up->shm_segsz);
- err2 |= __put_user(s64.shm_nattch, &up->shm_nattch);
- err2 |= __put_user(s64.shm_cpid, &up->shm_cpid);
- err2 |= __put_user(s64.shm_lpid, &up->shm_lpid);
- if (err2)
- err = -EFAULT;
- } else {
- struct shmid_ds32 *up = (struct shmid_ds32 *)uptr;
- struct shmid_ds s;
-
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_shmctl(first, second, &s);
- set_fs(old_fs);
- if (err < 0)
- break;
-
- err2 = copy_to_user(&up->shm_perm, &s.shm_perm,
- sizeof(struct ipc_perm));
- 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;
- }
- break;
-
- case SHM_INFO: {
- struct shm_info si;
- struct shm_info32 {
- int used_ids;
- u32 shm_tot, shm_rss, shm_swp;
- u32 swap_attempts, swap_successes;
- } *uip = (struct shm_info32 *)uptr;
-
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_shmctl(first, second, (struct shmid_ds *)&si);
- set_fs(old_fs);
- if (err < 0)
- break;
- err2 = put_user(si.used_ids, &uip->used_ids);
- err2 |= __put_user(si.shm_tot, &uip->shm_tot);
- err2 |= __put_user(si.shm_rss, &uip->shm_rss);
- err2 |= __put_user(si.shm_swp, &uip->shm_swp);
- err2 |= __put_user(si.swap_attempts, &uip->swap_attempts);
- err2 |= __put_user(si.swap_successes, &uip->swap_successes);
- if (err2)
- err = -EFAULT;
- break;
- }
- }
- return err;
-}
-
-static int sys32_semtimedop(int semid, struct sembuf *tsems, int nsems,
- const struct compat_timespec *timeout32)