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Diffstat (limited to 'arch/mips/kernel/linux32.c')
-rw-r--r--arch/mips/kernel/linux32.c578
1 files changed, 23 insertions, 555 deletions
diff --git a/arch/mips/kernel/linux32.c b/arch/mips/kernel/linux32.c
index 7a3ebbeba1f..b061c9aa630 100644
--- a/arch/mips/kernel/linux32.c
+++ b/arch/mips/kernel/linux32.c
@@ -382,531 +382,6 @@ asmlinkage int sys32_sched_rr_get_interval(compat_pid_t pid,
return ret;
}
-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 ipc64_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;
- unsigned short __pad1;
- unsigned int __unused1;
- unsigned int __unused2;
-};
-
-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_perm32 sem_perm;
- compat_time_t sem_otime;
- compat_time_t sem_ctime;
- unsigned int sem_nsems;
- unsigned int __unused1;
- unsigned int __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_perm32 msg_perm;
- compat_time_t msg_stime;
- unsigned int __unused1;
- compat_time_t msg_rtime;
- unsigned int __unused2;
- compat_time_t msg_ctime;
- unsigned int __unused3;
- unsigned int msg_cbytes;
- unsigned int msg_qnum;
- unsigned int msg_qbytes;
- compat_pid_t msg_lspid;
- compat_pid_t msg_lrpid;
- unsigned int __unused4;
- unsigned int __unused5;
-};
-
-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_perm32 shm_perm;
- compat_size_t shm_segsz;
- compat_time_t shm_atime;
- compat_time_t shm_dtime;
- compat_time_t shm_ctime;
- compat_pid_t shm_cpid;
- compat_pid_t shm_lpid;
- unsigned int shm_nattch;
- unsigned int __unused1;
- unsigned int __unused2;
-};
-
-struct ipc_kludge32 {
- u32 msgp;
- s32 msgtyp;
-};
-
-static int
-do_sys32_semctl(int first, int second, int third, void __user *uptr)
-{
- union semun fourth;
- u32 pad;
- int err, err2;
- struct semid64_ds s;
- mm_segment_t old_fs;
-
- if (!uptr)
- return -EINVAL;
- err = -EFAULT;
- if (get_user (pad, (u32 __user *)uptr))
- return err;
- if ((third & ~IPC_64) == SETVAL)
- fourth.val = (int)pad;
- else
- fourth.__pad = (void __user *)A(pad);
- switch (third & ~IPC_64) {
- case IPC_INFO:
- case IPC_RMID:
- case IPC_SET:
- case SEM_INFO:
- case GETVAL:
- case GETPID:
- case GETNCNT:
- case GETZCNT:
- case GETALL:
- case SETVAL:
- case SETALL:
- err = sys_semctl (first, second, third, fourth);
- break;
-
- case IPC_STAT:
- case SEM_STAT:
- fourth.__pad = (struct semid64_ds __user *)&s;
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_semctl(first, second, third | IPC_64, fourth);
- set_fs(old_fs);
-
- if (third & IPC_64) {
- struct semid64_ds32 __user *usp64 = (struct semid64_ds32 __user *) A(pad);
-
- if (!access_ok(VERIFY_WRITE, usp64, sizeof(*usp64))) {
- err = -EFAULT;
- break;
- }
- err2 = __put_user(s.sem_perm.key, &usp64->sem_perm.key);
- err2 |= __put_user(s.sem_perm.uid, &usp64->sem_perm.uid);
- err2 |= __put_user(s.sem_perm.gid, &usp64->sem_perm.gid);
- err2 |= __put_user(s.sem_perm.cuid, &usp64->sem_perm.cuid);
- err2 |= __put_user(s.sem_perm.cgid, &usp64->sem_perm.cgid);
- err2 |= __put_user(s.sem_perm.mode, &usp64->sem_perm.mode);
- err2 |= __put_user(s.sem_perm.seq, &usp64->sem_perm.seq);
- err2 |= __put_user(s.sem_otime, &usp64->sem_otime);
- err2 |= __put_user(s.sem_ctime, &usp64->sem_ctime);
- err2 |= __put_user(s.sem_nsems, &usp64->sem_nsems);
- } else {
- struct semid_ds32 __user *usp32 = (struct semid_ds32 __user *) A(pad);
-
- if (!access_ok(VERIFY_WRITE, usp32, sizeof(*usp32))) {
- err = -EFAULT;
- break;
- }
- err2 = __put_user(s.sem_perm.key, &usp32->sem_perm.key);
- err2 |= __put_user(s.sem_perm.uid, &usp32->sem_perm.uid);
- err2 |= __put_user(s.sem_perm.gid, &usp32->sem_perm.gid);
- err2 |= __put_user(s.sem_perm.cuid, &usp32->sem_perm.cuid);
- err2 |= __put_user(s.sem_perm.cgid, &usp32->sem_perm.cgid);
- err2 |= __put_user(s.sem_perm.mode, &usp32->sem_perm.mode);
- err2 |= __put_user(s.sem_perm.seq, &usp32->sem_perm.seq);
- err2 |= __put_user(s.sem_otime, &usp32->sem_otime);
- err2 |= __put_user(s.sem_ctime, &usp32->sem_ctime);
- err2 |= __put_user(s.sem_nsems, &usp32->sem_nsems);
- }
- if (err2)
- err = -EFAULT;
- break;
-
- default:
- err = - EINVAL;
- break;
- }
-
- return err;
-}
-
-static int
-do_sys32_msgsnd (int first, int second, int third, void __user *uptr)
-{
- struct msgbuf32 __user *up = (struct msgbuf32 __user *)uptr;
- struct msgbuf *p;
- mm_segment_t old_fs;
- int err;
-
- if (second < 0)
- return -EINVAL;
- p = kmalloc (second + sizeof (struct msgbuf)
- + 4, GFP_USER);
- if (!p)
- return -ENOMEM;
- err = get_user (p->mtype, &up->mtype);
- if (err)
- goto out;
- err |= __copy_from_user (p->mtext, &up->mtext, second);
- if (err)
- 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_kludge32 __user *uipck = (struct ipc_kludge32 __user *)uptr;
- struct ipc_kludge32 ipck;
-
- err = -EINVAL;
- if (!uptr)
- goto out;
- err = -EFAULT;
- if (copy_from_user (&ipck, uipck, sizeof (struct ipc_kludge32)))
- goto out;
- uptr = (void __user *)AA(ipck.msgp);
- msgtyp = ipck.msgtyp;
- }
-
- if (second < 0)
- return -EINVAL;
- err = -ENOMEM;
- p = kmalloc (second + sizeof (struct msgbuf) + 4, GFP_USER);
- if (!p)
- goto out;
- old_fs = get_fs ();
- set_fs (KERNEL_DS);
- err = sys_msgrcv (first, (struct msgbuf __user *)p, second + 4, msgtyp, third);
- set_fs (old_fs);
- if (err < 0)
- goto free_then_out;
- up = (struct msgbuf32 __user *)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 = -EINVAL, err2;
- struct msqid64_ds m;
- struct msqid_ds32 __user *up32 = (struct msqid_ds32 __user *)uptr;
- struct msqid64_ds32 __user *up64 = (struct msqid64_ds32 __user *)uptr;
- 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 __user *)uptr);
- break;
-
- case IPC_SET:
- if (second & IPC_64) {
- if (!access_ok(VERIFY_READ, up64, sizeof(*up64))) {
- err = -EFAULT;
- break;
- }
- err = __get_user(m.msg_perm.uid, &up64->msg_perm.uid);
- err |= __get_user(m.msg_perm.gid, &up64->msg_perm.gid);
- err |= __get_user(m.msg_perm.mode, &up64->msg_perm.mode);
- err |= __get_user(m.msg_qbytes, &up64->msg_qbytes);
- } else {
- if (!access_ok(VERIFY_READ, up32, sizeof(*up32))) {
- err = -EFAULT;
- break;
- }
- err = __get_user(m.msg_perm.uid, &up32->msg_perm.uid);
- err |= __get_user(m.msg_perm.gid, &up32->msg_perm.gid);
- err |= __get_user(m.msg_perm.mode, &up32->msg_perm.mode);
- err |= __get_user(m.msg_qbytes, &up32->msg_qbytes);
- }
- if (err)
- break;
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_msgctl(first, second | IPC_64, (struct msqid_ds __user *)&m);
- set_fs(old_fs);
- break;
-
- case IPC_STAT:
- case MSG_STAT:
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_msgctl(first, second | IPC_64, (struct msqid_ds __user *)&m);
- set_fs(old_fs);
- if (second & IPC_64) {
- if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) {
- err = -EFAULT;
- break;
- }
- err2 = __put_user(m.msg_perm.key, &up64->msg_perm.key);
- err2 |= __put_user(m.msg_perm.uid, &up64->msg_perm.uid);
- err2 |= __put_user(m.msg_perm.gid, &up64->msg_perm.gid);
- err2 |= __put_user(m.msg_perm.cuid, &up64->msg_perm.cuid);
- err2 |= __put_user(m.msg_perm.cgid, &up64->msg_perm.cgid);
- err2 |= __put_user(m.msg_perm.mode, &up64->msg_perm.mode);
- err2 |= __put_user(m.msg_perm.seq, &up64->msg_perm.seq);
- err2 |= __put_user(m.msg_stime, &up64->msg_stime);
- err2 |= __put_user(m.msg_rtime, &up64->msg_rtime);
- err2 |= __put_user(m.msg_ctime, &up64->msg_ctime);
- err2 |= __put_user(m.msg_cbytes, &up64->msg_cbytes);
- err2 |= __put_user(m.msg_qnum, &up64->msg_qnum);
- err2 |= __put_user(m.msg_qbytes, &up64->msg_qbytes);
- err2 |= __put_user(m.msg_lspid, &up64->msg_lspid);
- err2 |= __put_user(m.msg_lrpid, &up64->msg_lrpid);
- if (err2)
- err = -EFAULT;
- } else {
- if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32))) {
- err = -EFAULT;
- break;
- }
- err2 = __put_user(m.msg_perm.key, &up32->msg_perm.key);
- err2 |= __put_user(m.msg_perm.uid, &up32->msg_perm.uid);
- err2 |= __put_user(m.msg_perm.gid, &up32->msg_perm.gid);
- err2 |= __put_user(m.msg_perm.cuid, &up32->msg_perm.cuid);
- err2 |= __put_user(m.msg_perm.cgid, &up32->msg_perm.cgid);
- err2 |= __put_user(m.msg_perm.mode, &up32->msg_perm.mode);
- err2 |= __put_user(m.msg_perm.seq, &up32->msg_perm.seq);
- err2 |= __put_user(m.msg_stime, &up32->msg_stime);
- err2 |= __put_user(m.msg_rtime, &up32->msg_rtime);
- err2 |= __put_user(m.msg_ctime, &up32->msg_ctime);
- err2 |= __put_user(m.msg_cbytes, &up32->msg_cbytes);
- err2 |= __put_user(m.msg_qnum, &up32->msg_qnum);
- err2 |= __put_user(m.msg_qbytes, &up32->msg_qbytes);
- err2 |= __put_user(m.msg_lspid, &up32->msg_lspid);
- err2 |= __put_user(m.msg_lrpid, &up32->msg_lrpid);
- if (err2)
- err = -EFAULT;
- }
- break;
- }
-
- return err;
-}
-
-static int
-do_sys32_shmat (int first, int second, int third, int version, void __user *uptr)
-{
- unsigned long raddr;
- u32 __user *uaddr = (u32 __user *)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;
-}
-
-struct shm_info32 {
- int used_ids;
- u32 shm_tot, shm_rss, shm_swp;
- u32 swap_attempts, swap_successes;
-};
-
-static int
-do_sys32_shmctl (int first, int second, void __user *uptr)
-{
- struct shmid64_ds32 __user *up64 = (struct shmid64_ds32 __user *)uptr;
- struct shmid_ds32 __user *up32 = (struct shmid_ds32 __user *)uptr;
- struct shm_info32 __user *uip = (struct shm_info32 __user *)uptr;
- int err = -EFAULT, err2;
- struct shmid64_ds s64;
- mm_segment_t old_fs;
- struct shm_info si;
- struct shmid_ds s;
-
- switch (second & ~IPC_64) {
- case IPC_INFO:
- second = IPC_INFO; /* So that we don't have to translate it */
- case IPC_RMID:
- case SHM_LOCK:
- case SHM_UNLOCK:
- err = sys_shmctl(first, second, (struct shmid_ds __user *)uptr);
- break;
- case IPC_SET:
- if (second & IPC_64) {
- err = get_user(s.shm_perm.uid, &up64->shm_perm.uid);
- err |= get_user(s.shm_perm.gid, &up64->shm_perm.gid);
- err |= get_user(s.shm_perm.mode, &up64->shm_perm.mode);
- } else {
- err = get_user(s.shm_perm.uid, &up32->shm_perm.uid);
- err |= get_user(s.shm_perm.gid, &up32->shm_perm.gid);
- err |= get_user(s.shm_perm.mode, &up32->shm_perm.mode);
- }
- if (err)
- break;
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_shmctl(first, second & ~IPC_64, (struct shmid_ds __user *)&s);
- set_fs(old_fs);
- break;
-
- case IPC_STAT:
- case SHM_STAT:
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_shmctl(first, second | IPC_64, (void __user *) &s64);
- set_fs(old_fs);
- if (err < 0)
- break;
- if (second & IPC_64) {
- if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) {
- err = -EFAULT;
- break;
- }
- err2 = __put_user(s64.shm_perm.key, &up64->shm_perm.key);
- err2 |= __put_user(s64.shm_perm.uid, &up64->shm_perm.uid);
- err2 |= __put_user(s64.shm_perm.gid, &up64->shm_perm.gid);
- err2 |= __put_user(s64.shm_perm.cuid, &up64->shm_perm.cuid);
- err2 |= __put_user(s64.shm_perm.cgid, &up64->shm_perm.cgid);
- err2 |= __put_user(s64.shm_perm.mode, &up64->shm_perm.mode);
- err2 |= __put_user(s64.shm_perm.seq, &up64->shm_perm.seq);
- err2 |= __put_user(s64.shm_atime, &up64->shm_atime);
- err2 |= __put_user(s64.shm_dtime, &up64->shm_dtime);
- err2 |= __put_user(s64.shm_ctime, &up64->shm_ctime);
- err2 |= __put_user(s64.shm_segsz, &up64->shm_segsz);
- err2 |= __put_user(s64.shm_nattch, &up64->shm_nattch);
- err2 |= __put_user(s64.shm_cpid, &up64->shm_cpid);
- err2 |= __put_user(s64.shm_lpid, &up64->shm_lpid);
- } else {
- if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32))) {
- err = -EFAULT;
- break;
- }
- err2 = __put_user(s64.shm_perm.key, &up32->shm_perm.key);
- err2 |= __put_user(s64.shm_perm.uid, &up32->shm_perm.uid);
- err2 |= __put_user(s64.shm_perm.gid, &up32->shm_perm.gid);
- err2 |= __put_user(s64.shm_perm.cuid, &up32->shm_perm.cuid);
- err2 |= __put_user(s64.shm_perm.cgid, &up32->shm_perm.cgid);
- err2 |= __put_user(s64.shm_perm.mode, &up32->shm_perm.mode);
- err2 |= __put_user(s64.shm_perm.seq, &up32->shm_perm.seq);
- err2 |= __put_user(s64.shm_atime, &up32->shm_atime);
- err2 |= __put_user(s64.shm_dtime, &up32->shm_dtime);
- err2 |= __put_user(s64.shm_ctime, &up32->shm_ctime);
- err2 |= __put_user(s64.shm_segsz, &up32->shm_segsz);
- err2 |= __put_user(s64.shm_nattch, &up32->shm_nattch);
- err2 |= __put_user(s64.shm_cpid, &up32->shm_cpid);
- err2 |= __put_user(s64.shm_lpid, &up32->shm_lpid);
- }
- if (err2)
- err = -EFAULT;
- break;
-
- case SHM_INFO:
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_shmctl(first, second, (void __user *)&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;
-
- default:
- err = -EINVAL;
- break;
- }
-
- 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 = 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
sys32_ipc (u32 call, int first, int second, int third, u32 ptr, u32 fifth)
{
@@ -918,48 +393,43 @@ sys32_ipc (u32 call, int first, int second, int third, u32 ptr, u32 fifth)
switch (call) {
case SEMOP:
/* struct sembuf is the same on 32 and 64bit :)) */
- err = sys_semtimedop (first, (struct sembuf __user *)AA(ptr), second,
- NULL);
+ err = sys_semtimedop(first, compat_ptr(ptr), second, NULL);
break;
case SEMTIMEDOP:
- err = sys32_semtimedop (first, (struct sembuf __user *)AA(ptr), second,
- (const struct compat_timespec __user *)AA(fifth));
+ err = compat_sys_semtimedop(first, compat_ptr(ptr), second,
+ compat_ptr(fifth));
break;
case SEMGET:
- err = sys_semget (first, second, third);
+ err = sys_semget(first, second, third);
break;
case SEMCTL:
- err = do_sys32_semctl (first, second, third,
- (void __user *)AA(ptr));
+ err = compat_sys_semctl(first, second, third, compat_ptr(ptr));
break;
-
case MSGSND:
- err = do_sys32_msgsnd (first, second, third,
- (void __user *)AA(ptr));
+ err = compat_sys_msgsnd(first, second, third, compat_ptr(ptr));
break;
case MSGRCV:
- err = do_sys32_msgrcv (first, second, fifth, third,
- version, (void __user *)AA(ptr));
+ err = compat_sys_msgrcv(first, second, fifth, third,
+ version, compat_ptr(ptr));
break;
case MSGGET:
- err = sys_msgget ((key_t) first, second);
+ err = sys_msgget((key_t) first, second);
break;
case MSGCTL:
- err = do_sys32_msgctl (first, second, (void __user *)AA(ptr));
+ err = compat_sys_msgctl(first, second, compat_ptr(ptr));
break;
-
case SHMAT:
- err = do_sys32_shmat (first, second, third,
- version, (void __user *)AA(ptr));
+ err = compat_sys_shmat(first, second, third, version,
+ compat_ptr(ptr));
break;
case SHMDT:
- err = sys_shmdt ((char __user *)A(ptr));
+ err = sys_shmdt(compat_ptr(ptr));
break;
case SHMGET:
- err = sys_shmget (first, (unsigned)second, third);
+ err = sys_shmget(first, (unsigned)second, third);
break;
case SHMCTL:
- err = do_sys32_shmctl (first, second, (void __user *)AA(ptr));
+ err = compat_sys_shmctl(first, second, compat_ptr(ptr));
break;
default:
err = -EINVAL;
@@ -969,18 +439,16 @@ sys32_ipc (u32 call, int first, int second, int third, u32 ptr, u32 fifth)
return err;
}
-asmlinkage long sys32_shmat(int shmid, char __user *shmaddr,
- int shmflg, int32_t __user *addr)
+#ifdef CONFIG_MIPS32_N32
+asmlinkage long sysn32_semctl(int semid, int semnum, int cmd, union semun arg)
{
- unsigned long raddr;
- int err;
-
- err = do_shmat(shmid, shmaddr, shmflg, &raddr);
- if (err)
- return err;
-
- return put_user(raddr, addr);
+ /* compat_sys_semctl expects a pointer to union semun */
+ u32 __user *uptr = compat_alloc_user_space(sizeof(u32));
+ if (put_user(ptr_to_compat(arg.__pad), uptr))
+ return -EFAULT;
+ return compat_sys_semctl(semid, semnum, cmd, uptr);
}
+#endif
struct sysctl_args32
{
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 23:14:26 +0000