debugging info resulting in a larger kernel image.
Say Y here only if you plan to use gdb to debug the kernel.
If you don't debug the kernel, you can say N.
-
+
+config SYSVIPC_COMPAT
+ bool
+ depends on COMPAT && SYSVIPC
+ default y
endmenu
source "security/Kconfig"
return ret;
}
-/*
- * sys32_ipc() is the de-multiplexer for the SysV IPC calls in 32bit emulation..
- *
- * This is really horribly ugly.
- */
-
-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_uid32_t uid;
- compat_gid32_t gid;
- compat_uid32_t cuid;
- compat_gid32_t cgid;
- compat_mode_t mode;
- unsigned short __pad1;
- unsigned short seq;
- unsigned short __pad2;
- 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;
- unsigned int __unused1;
- compat_time_t sem_ctime;
- unsigned int __unused2;
- unsigned int sem_nsems;
- unsigned int __unused3;
- unsigned int __unused4;
-};
-
-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;
- unsigned int __unused1;
- compat_time_t shm_dtime;
- unsigned int __unused2;
- compat_time_t shm_ctime;
- unsigned int __unused3;
- compat_pid_t shm_cpid;
- compat_pid_t shm_lpid;
- unsigned int shm_nattch;
- unsigned int __unused4;
- unsigned int __unused5;
-};
-
-struct shminfo64_32 {
- unsigned int shmmax;
- unsigned int shmmin;
- unsigned int shmmni;
- unsigned int shmseg;
- unsigned int shmall;
- unsigned int __unused1;
- unsigned int __unused2;
- unsigned int __unused3;
- unsigned int __unused4;
-};
-
-struct shm_info32 {
- int used_ids;
- u32 shm_tot, shm_rss, shm_swp;
- u32 swap_attempts, swap_successes;
-};
-
-struct ipc_kludge {
- u32 msgp;
- s32 msgtyp;
-};
-
#define SEMOP 1
#define SEMGET 2
#define SEMCTL 3
#define SHMGET 23
#define SHMCTL 24
-#define IPCOP_MASK(__x) (1UL << (__x))
-
-static int
-ipc_parse_version32 (int *cmd)
-{
- if (*cmd & IPC_64) {
- *cmd ^= IPC_64;
- return IPC_64;
- } else {
- return IPC_OLD;
- }
-}
-
-static int
-semctl32 (int first, int second, int third, void *uptr)
-{
- union semun fourth;
- u32 pad;
- int err = 0, err2;
- struct semid64_ds s;
- mm_segment_t old_fs;
- int version = ipc_parse_version32(&third);
-
- if (!uptr)
- return -EINVAL;
- if (get_user(pad, (u32 *)uptr))
- return -EFAULT;
- if (third == SETVAL)
- fourth.val = (int)pad;
- else
- fourth.__pad = (void *)A(pad);
- switch (third) {
- default:
- err = -EINVAL;
- break;
-
- 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 = &s;
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_semctl(first, second, third, fourth);
- set_fs(old_fs);
-
- if (version == IPC_64) {
- struct semid64_ds32 *usp64 = (struct semid64_ds32 *) 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 *usp32 = (struct semid_ds32 *) 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;
- }
- return err;
-}
-
-static int
-do_sys32_msgsnd (int first, int second, int third, void *uptr)
-{
- struct msgbuf *p = kmalloc(second + sizeof(struct msgbuf), GFP_USER);
- struct msgbuf32 *up = (struct msgbuf32 *)uptr;
- mm_segment_t old_fs;
- int err;
-
- if (!p)
- return -ENOMEM;
- err = get_user(p->mtype, &up->mtype);
- 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, 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 (!version) {
- struct ipc_kludge *uipck = (struct ipc_kludge *)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 = (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
-msgctl32 (int first, int second, void *uptr)
-{
- int err = -EINVAL, err2;
- struct msqid64_ds m64;
- struct msqid_ds32 *up32 = (struct msqid_ds32 *)uptr;
- struct msqid64_ds32 *up64 = (struct msqid64_ds32 *)uptr;
- mm_segment_t old_fs;
- int version = ipc_parse_version32(&second);
-
- switch (second) {
- case IPC_INFO:
- case IPC_RMID:
- case MSG_INFO:
- err = sys_msgctl(first, second, (struct msqid_ds *)uptr);
- break;
-
- case IPC_SET:
- if (version == IPC_64) {
- err = get_user(m64.msg_perm.uid, &up64->msg_perm.uid);
- err |= get_user(m64.msg_perm.gid, &up64->msg_perm.gid);
- err |= get_user(m64.msg_perm.mode, &up64->msg_perm.mode);
- err |= get_user(m64.msg_qbytes, &up64->msg_qbytes);
- } else {
- err = get_user(m64.msg_perm.uid, &up32->msg_perm.uid);
- err |= get_user(m64.msg_perm.gid, &up32->msg_perm.gid);
- err |= get_user(m64.msg_perm.mode, &up32->msg_perm.mode);
- err |= get_user(m64.msg_qbytes, &up32->msg_qbytes);
- }
- if (err)
- break;
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_msgctl(first, second, (struct msqid_ds *)&m64);
- set_fs(old_fs);
- break;
-
- case IPC_STAT:
- case MSG_STAT:
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_msgctl(first, second, (struct msqid_ds *)&m64);
- set_fs(old_fs);
-
- if (version == IPC_64) {
- if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) {
- err = -EFAULT;
- break;
- }
- err2 = __put_user(m64.msg_perm.key, &up64->msg_perm.key);
- err2 |= __put_user(m64.msg_perm.uid, &up64->msg_perm.uid);
- err2 |= __put_user(m64.msg_perm.gid, &up64->msg_perm.gid);
- err2 |= __put_user(m64.msg_perm.cuid, &up64->msg_perm.cuid);
- err2 |= __put_user(m64.msg_perm.cgid, &up64->msg_perm.cgid);
- err2 |= __put_user(m64.msg_perm.mode, &up64->msg_perm.mode);
- err2 |= __put_user(m64.msg_perm.seq, &up64->msg_perm.seq);
- err2 |= __put_user(m64.msg_stime, &up64->msg_stime);
- err2 |= __put_user(m64.msg_rtime, &up64->msg_rtime);
- err2 |= __put_user(m64.msg_ctime, &up64->msg_ctime);
- err2 |= __put_user(m64.msg_cbytes, &up64->msg_cbytes);
- err2 |= __put_user(m64.msg_qnum, &up64->msg_qnum);
- err2 |= __put_user(m64.msg_qbytes, &up64->msg_qbytes);
- err2 |= __put_user(m64.msg_lspid, &up64->msg_lspid);
- err2 |= __put_user(m64.msg_lrpid, &up64->msg_lrpid);
- if (err2)
- err = -EFAULT;
- } else {
- if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32))) {
- err = -EFAULT;
- break;
- }
- err2 = __put_user(m64.msg_perm.key, &up32->msg_perm.key);
- err2 |= __put_user(m64.msg_perm.uid, &up32->msg_perm.uid);
- err2 |= __put_user(m64.msg_perm.gid, &up32->msg_perm.gid);
- err2 |= __put_user(m64.msg_perm.cuid, &up32->msg_perm.cuid);
- err2 |= __put_user(m64.msg_perm.cgid, &up32->msg_perm.cgid);
- err2 |= __put_user(m64.msg_perm.mode, &up32->msg_perm.mode);
- err2 |= __put_user(m64.msg_perm.seq, &up32->msg_perm.seq);
- err2 |= __put_user(m64.msg_stime, &up32->msg_stime);
- err2 |= __put_user(m64.msg_rtime, &up32->msg_rtime);
- err2 |= __put_user(m64.msg_ctime, &up32->msg_ctime);
- err2 |= __put_user(m64.msg_cbytes, &up32->msg_cbytes);
- err2 |= __put_user(m64.msg_qnum, &up32->msg_qnum);
- err2 |= __put_user(m64.msg_qbytes, &up32->msg_qbytes);
- err2 |= __put_user(m64.msg_lspid, &up32->msg_lspid);
- err2 |= __put_user(m64.msg_lrpid, &up32->msg_lrpid);
- if (err2)
- err = -EFAULT;
- }
- break;
- }
- return err;
-}
-
-static int
-shmat32 (int first, int second, int third, int version, void *uptr)
-{
- unsigned long raddr;
- u32 *uaddr = (u32 *)A((u32)third);
- int err;
-
- if (version == 1)
- return -EINVAL; /* iBCS2 emulator entry point: unsupported */
- err = do_shmat(first, uptr, second, &raddr);
- if (err)
- return err;
- return put_user(raddr, uaddr);
-}
-
-static int
-shmctl32 (int first, int second, void *uptr)
-{
- int err = -EFAULT, err2;
-
- struct shmid64_ds s64;
- struct shmid_ds32 *up32 = (struct shmid_ds32 *)uptr;
- struct shmid64_ds32 *up64 = (struct shmid64_ds32 *)uptr;
- mm_segment_t old_fs;
- struct shm_info32 *uip = (struct shm_info32 *)uptr;
- struct shm_info si;
- int version = ipc_parse_version32(&second);
- struct shminfo64 smi;
- struct shminfo *usi32 = (struct shminfo *) uptr;
- struct shminfo64_32 *usi64 = (struct shminfo64_32 *) uptr;
-
- switch (second) {
- case IPC_INFO:
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_shmctl(first, second, (struct shmid_ds *)&smi);
- set_fs(old_fs);
-
- if (version == IPC_64) {
- if (!access_ok(VERIFY_WRITE, usi64, sizeof(*usi64))) {
- err = -EFAULT;
- break;
- }
- err2 = __put_user(smi.shmmax, &usi64->shmmax);
- err2 |= __put_user(smi.shmmin, &usi64->shmmin);
- err2 |= __put_user(smi.shmmni, &usi64->shmmni);
- err2 |= __put_user(smi.shmseg, &usi64->shmseg);
- err2 |= __put_user(smi.shmall, &usi64->shmall);
- } else {
- if (!access_ok(VERIFY_WRITE, usi32, sizeof(*usi32))) {
- err = -EFAULT;
- break;
- }
- err2 = __put_user(smi.shmmax, &usi32->shmmax);
- err2 |= __put_user(smi.shmmin, &usi32->shmmin);
- err2 |= __put_user(smi.shmmni, &usi32->shmmni);
- err2 |= __put_user(smi.shmseg, &usi32->shmseg);
- err2 |= __put_user(smi.shmall, &usi32->shmall);
- }
- if (err2)
- err = -EFAULT;
- break;
-
- case IPC_RMID:
- case SHM_LOCK:
- case SHM_UNLOCK:
- err = sys_shmctl(first, second, (struct shmid_ds *)uptr);
- break;
-
- case IPC_SET:
- if (version == IPC_64) {
- err = get_user(s64.shm_perm.uid, &up64->shm_perm.uid);
- err |= get_user(s64.shm_perm.gid, &up64->shm_perm.gid);
- err |= get_user(s64.shm_perm.mode, &up64->shm_perm.mode);
- } else {
- err = get_user(s64.shm_perm.uid, &up32->shm_perm.uid);
- err |= get_user(s64.shm_perm.gid, &up32->shm_perm.gid);
- err |= get_user(s64.shm_perm.mode, &up32->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);
- break;
-
- case IPC_STAT:
- case SHM_STAT:
- 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;
- if (version == 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 *)&si);
- set_fs(old_fs);
- if (err < 0)
- break;
-
- if (!access_ok(VERIFY_WRITE, uip, sizeof(*uip))) {
- err = -EFAULT;
- 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;
-}
-
-extern int sem_ctls[];
-#define sc_semopm (sem_ctls[2])
-
-static long
-semtimedop32(int semid, struct sembuf *tsops, int nsops,
- struct compat_timespec *timeout32)
-{
- struct timespec t;
- mm_segment_t oldfs;
- long ret;
-
- /* parameter checking precedence should mirror sys_semtimedop() */
- if (nsops < 1 || semid < 0)
- return -EINVAL;
- if (nsops > sc_semopm)
- return -E2BIG;
- if (!access_ok(VERIFY_READ, tsops, nsops * sizeof(struct sembuf)) ||
- get_compat_timespec(&t, timeout32))
- return -EFAULT;
-
- oldfs = get_fs();
- set_fs(KERNEL_DS);
- ret = sys_semtimedop(semid, tsops, nsops, &t);
- set_fs(oldfs);
- return ret;
-}
-
asmlinkage long
sys32_ipc(u32 call, int first, int second, int third, u32 ptr, u32 fifth)
{
switch (call) {
case SEMTIMEDOP:
if (fifth)
- return semtimedop32(first, (struct sembuf *)AA(ptr),
- second, (struct compat_timespec *)AA(fifth));
+ return compat_sys_semtimedop(first, compat_ptr(ptr),
+ second, compat_ptr(fifth));
/* else fall through for normal semop() */
case SEMOP:
/* struct sembuf is the same on 32 and 64bit :)) */
- return sys_semtimedop(first, (struct sembuf *)AA(ptr), second,
+ return sys_semtimedop(first, compat_ptr(ptr), second,
NULL);
case SEMGET:
return sys_semget(first, second, third);
case SEMCTL:
- return semctl32(first, second, third, (void *)AA(ptr));
+ return compat_sys_semctl(first, second, third, compat_ptr(ptr));
case MSGSND:
- return do_sys32_msgsnd(first, second, third, (void *)AA(ptr));
+ return compat_sys_msgsnd(first, second, third, compat_ptr(ptr));
case MSGRCV:
- return do_sys32_msgrcv(first, second, fifth, third, version, (void *)AA(ptr));
+ return compat_sys_msgrcv(first, second, fifth, third, version, compat_ptr(ptr));
case MSGGET:
return sys_msgget((key_t) first, second);
case MSGCTL:
- return msgctl32(first, second, (void *)AA(ptr));
+ return compat_sys_msgctl(first, second, compat_ptr(ptr));
case SHMAT:
- return shmat32(first, second, third, version, (void *)AA(ptr));
+ return compat_sys_shmat(first, second, third, version, compat_ptr(ptr));
break;
case SHMDT:
- return sys_shmdt((char *)AA(ptr));
+ return sys_shmdt(compat_ptr(ptr));
case SHMGET:
return sys_shmget(first, second, third);
case SHMCTL:
- return shmctl32(first, second, (void *)AA(ptr));
+ return compat_sys_shmctl(first, second, compat_ptr(ptr));
default:
return -ENOSYS;
depends on S390_SUPPORT
default y
+config SYSVIPC_COMPAT
+ bool
+ depends on COMPAT && SYSVIPC
+ default y
+
config BINFMT_ELF32
tristate "Kernel support for 31 bit ELF binaries"
depends on S390_SUPPORT
__put_user(i->tv_usec, &o->tv_usec)));
}
-struct msgbuf32 { s32 mtype; char mtext[1]; };
-
-struct ipc64_perm_ds32
-{
- __kernel_key_t key;
- __kernel_uid32_t uid;
- __kernel_gid32_t gid;
- __kernel_uid32_t cuid;
- __kernel_gid32_t cgid;
- compat_mode_t mode;
- unsigned short __pad1;
- unsigned short seq;
- unsigned short __pad2;
- unsigned int __unused1;
- unsigned int __unused2;
-};
-
-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_ds32 sem_perm;
- 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_ds32 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_ds32 shm_perm;
- compat_size_t shm_segsz;
- compat_time_t shm_atime;
- unsigned int __unused1;
- compat_time_t shm_dtime;
- unsigned int __unused2;
- compat_time_t shm_ctime;
- unsigned int __unused3;
- compat_pid_t shm_cpid;
- compat_pid_t shm_lpid;
- unsigned int shm_nattch;
- unsigned int __unused4;
- unsigned int __unused5;
-};
-
-extern int sem_ctls[];
-#define sc_semopm (sem_ctls[2])
-#define SEMOPM_FAST 64 /* ~ 372 bytes on stack */
-
-static long
-do_sys32_semtimedop (int semid, struct sembuf *tsops, int nsops,
- struct compat_timespec *timeout32)
-{
- struct sembuf *sops, fast_sops[SEMOPM_FAST];
- struct timespec t;
- mm_segment_t oldfs;
- long ret;
-
- /* parameter checking precedence should mirror sys_semtimedop() */
- if (nsops < 1 || semid < 0)
- return -EINVAL;
- if (nsops > sc_semopm)
- return -E2BIG;
- if (nsops <= SEMOPM_FAST)
- sops = fast_sops;
- else {
- sops = kmalloc(nsops * sizeof(*sops), GFP_KERNEL);
- if (sops == NULL)
- return -ENOMEM;
- }
- if (copy_from_user(sops, tsops, nsops * sizeof(*tsops)) ||
- get_compat_timespec(&t, timeout32))
- ret = -EFAULT;
- else {
- oldfs = get_fs();
- set_fs(KERNEL_DS);
- ret = sys_semtimedop(semid, sops, nsops, &t);
- set_fs(oldfs);
- }
- if (sops != fast_sops)
- kfree(sops);
- return ret;
-}
-
-#define IPCOP_MASK(__x) (1UL << (__x))
-static int do_sys32_semctl(int first, int second, int third, void *uptr)
-{
- union semun fourth;
- u32 pad;
- int err = -EINVAL;
-
- if (!uptr)
- goto out;
- err = -EFAULT;
- if (get_user (pad, (u32 *)uptr))
- goto out;
- if(third == SETVAL)
- fourth.val = (int)pad;
- else
- fourth.__pad = (void *)A(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 *usp = (struct semid64_ds32 *)A(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 = &s;
- }
- need_back_translation =
- (IPCOP_MASK (third) &
- (IPCOP_MASK (SEM_STAT) | IPCOP_MASK (IPC_STAT))) != 0;
- if (need_back_translation)
- fourth.__pad = &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;
- }
- } else {
- struct semid_ds s;
- struct semid_ds32 *usp = (struct semid_ds32 *)A(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 = &s;
- }
- need_back_translation =
- (IPCOP_MASK (third) &
- (IPCOP_MASK (SEM_STAT) | IPCOP_MASK (IPC_STAT))) != 0;
- if (need_back_translation)
- fourth.__pad = &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 *uptr)
-{
- struct msgbuf *p = kmalloc (second + sizeof (struct msgbuf), GFP_USER);
- struct msgbuf32 *up = (struct msgbuf32 *)uptr;
- mm_segment_t old_fs;
- int err;
-
- if (!p)
- return -ENOMEM;
-
- err = -EINVAL;
- if (second > MSGMAX || first < 0 || second < 0)
- goto out;
-
- err = -EFAULT;
- if (!uptr)
- goto out;
- 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, 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 (first < 0 || second < 0)
- 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;
-
- if (IPCOP_MASK (second) &
- (IPCOP_MASK (IPC_INFO) | IPCOP_MASK (MSG_INFO) |
- IPCOP_MASK (IPC_RMID))) {
- err = sys_msgctl (first, second, (struct msqid_ds *)uptr);
- } else if (second & IPC_64) {
- struct msqid64_ds m;
- struct msqid64_ds32 *up = (struct msqid64_ds32 *)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 *)&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;
- }
- } else {
- struct msqid_ds m;
- struct msqid_ds32 *up = (struct msqid_ds32 *)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, &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 *uptr)
-{
- unsigned long raddr;
- u32 *uaddr = (u32 *)A((u32)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 *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))
- second = IPC_INFO; /* So that we don't have to translate it */
- err = sys_shmctl (first, second, (struct shmid_ds *)uptr);
- } else if ((second & IPC_64) && second != (SHM_INFO|IPC_64)) {
- struct shmid64_ds s;
- struct shmid64_ds32 *up = (struct shmid64_ds32 *)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 *)&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 = 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 (high2lowgid(s.shm_perm.gid), &up->shm_perm.gid);
- err2 |= __put_user (high2lowuid(s.shm_perm.cuid), &up->shm_perm.cuid);
- err2 |= __put_user (high2lowgid(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;
- }
- } else {
- struct shmid_ds s;
- struct shmid_ds32 *up = (struct shmid_ds32 *)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, &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;
- } *uip = (struct shm_info32 *)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 = 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 (high2lowgid(s.shm_perm.gid), &up->shm_perm.gid);
- err2 |= __put_user (high2lowuid(s.shm_perm.cuid), &up->shm_perm.cuid);
- err2 |= __put_user (high2lowgid(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;
-}
-
/*
* sys32_ipc() is the de-multiplexer for the SysV IPC calls in 32bit emulation.
*
*/
asmlinkage int sys32_ipc (u32 call, int first, int second, int third, u32 ptr)
{
- int version, err;
+ if(call >> 16) /* hack for backward compatibility */
+ return -EINVAL;
- version = call >> 16; /* hack for backward compatibility */
call &= 0xffff;
- if(version)
- return -EINVAL;
-
if (call <= SEMTIMEDOP)
switch (call) {
case SEMTIMEDOP:
- if (third) {
- err = do_sys32_semtimedop(first,
- (struct sembuf *)AA(ptr),
- second,
- (struct compat_timespec *)
- AA((u32)third));
- goto out;
- }
+ if (third)
+ return compat_sys_semtimedop(first,
+ compat_ptr(ptr), second,
+ compat_ptr(third));
/* else fall through for normal semop() */
case SEMOP:
/* struct sembuf is the same on 32 and 64bit :)) */
- err = sys_semtimedop (first, (struct sembuf *)AA(ptr),
+ return sys_semtimedop (first, compat_ptr(ptr),
second, NULL);
- goto out;
case SEMGET:
- err = sys_semget (first, second, third);
- goto out;
+ return sys_semget (first, second, third);
case SEMCTL:
- err = do_sys32_semctl (first, second, third, (void *)AA(ptr));
- goto out;
+ return compat_sys_semctl (first, second, third,
+ compat_ptr(ptr));
default:
- err = -EINVAL;
- goto out;
+ return -EINVAL;
};
if (call <= MSGCTL)
switch (call) {
case MSGSND:
- err = do_sys32_msgsnd (first, second, third, (void *)AA(ptr));
- goto out;
+ return compat_sys_msgsnd (first, second, third,
+ compat_ptr(ptr));
case MSGRCV:
- err = do_sys32_msgrcv (first, second, 0, third,
- version, (void *)AA(ptr));
- goto out;
+ return compat_sys_msgrcv (first, second, 0, third,
+ 0, compat_ptr(ptr));
case MSGGET:
- err = sys_msgget ((key_t) first, second);
- goto out;
+ return sys_msgget ((key_t) first, second);
case MSGCTL:
- err = do_sys32_msgctl (first, second, (void *)AA(ptr));
- goto out;
+ return compat_sys_msgctl (first, second,
+ compat_ptr(ptr));
default:
- err = -EINVAL;
- goto out;
+ return -EINVAL;
}
if (call <= SHMCTL)
switch (call) {
case SHMAT:
- err = do_sys32_shmat (first, second, third,
- version, (void *)AA(ptr));
- goto out;
+ return compat_sys_shmat (first, second, third,
+ 0, compat_ptr(ptr));
case SHMDT:
- err = sys_shmdt ((char *)AA(ptr));
- goto out;
+ return sys_shmdt(compat_ptr(ptr));
case SHMGET:
- err = sys_shmget (first, second, third);
- goto out;
+ return sys_shmget(first, second, third);
case SHMCTL:
- err = do_sys32_shmctl (first, second, (void *)AA(ptr));
- goto out;
+ return compat_sys_shmctl(first, second,
+ compat_ptr(ptr));
default:
- err = -EINVAL;
- goto out;
+ return -EINVAL;
}
- err = -EINVAL;
-
-out:
- return err;
+ return -EINVAL;
}
asmlinkage int sys32_truncate64(const char * path, unsigned long high, unsigned long low)
depends on IA32_EMULATION
default y
+config SYSVIPC_COMPAT
+ bool
+ depends on COMPAT && SYSVIPC
+ default y
config UID16
bool
#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/fs.h>
-#include <linux/file.h>
+#include <linux/spinlock.h>
+#include <linux/list.h>
#include <linux/syscalls.h>
+#include <linux/time.h>
#include <linux/sem.h>
#include <linux/msg.h>
-#include <linux/mm.h>
#include <linux/shm.h>
-#include <linux/slab.h>
#include <linux/ipc.h>
#include <linux/compat.h>
-#include <asm/mman.h>
-#include <asm/types.h>
-#include <asm/uaccess.h>
-#include <asm/semaphore.h>
-#include <asm/ipc.h>
-
-#include <asm/ia32.h>
-
-/*
- * sys32_ipc() is the de-multiplexer for the SysV IPC calls in 32bit emulation..
- *
- * This is really horribly ugly.
- */
-
-struct msgbuf32 {
- s32 mtype;
- char mtext[1];
-};
-
-struct ipc_perm32 {
- int key;
- compat_uid_t uid;
- compat_gid_t gid;
- compat_uid_t cuid;
- compat_gid_t cgid;
- unsigned short mode;
- unsigned short seq;
-};
-
-struct ipc64_perm32 {
- unsigned key;
- compat_uid32_t uid;
- compat_gid32_t gid;
- compat_uid32_t cuid;
- compat_gid32_t cgid;
- unsigned short mode;
- unsigned short __pad1;
- unsigned short seq;
- unsigned short __pad2;
- 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;
- unsigned int __unused1;
- compat_time_t sem_ctime;
- unsigned int __unused2;
- unsigned int sem_nsems;
- unsigned int __unused3;
- unsigned int __unused4;
-};
-
-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;
- unsigned int __unused1;
- compat_time_t shm_dtime;
- unsigned int __unused2;
- compat_time_t shm_ctime;
- unsigned int __unused3;
- compat_pid_t shm_cpid;
- compat_pid_t shm_lpid;
- unsigned int shm_nattch;
- unsigned int __unused4;
- unsigned int __unused5;
-};
-
-struct shminfo64_32 {
- unsigned int shmmax;
- unsigned int shmmin;
- unsigned int shmmni;
- unsigned int shmseg;
- unsigned int shmall;
- unsigned int __unused1;
- unsigned int __unused2;
- unsigned int __unused3;
- unsigned int __unused4;
-};
-
-struct shm_info32 {
- int used_ids;
- u32 shm_tot, shm_rss, shm_swp;
- u32 swap_attempts, swap_successes;
-};
-
-struct ipc_kludge {
- u32 msgp;
- s32 msgtyp;
-};
-
-
-#define A(__x) ((unsigned long)(__x))
-#define AA(__x) ((unsigned long)(__x))
-
-#define SEMOP 1
-#define SEMGET 2
-#define SEMCTL 3
-#define TIMEDSEMOP 4
-#define MSGSND 11
-#define MSGRCV 12
-#define MSGGET 13
-#define MSGCTL 14
-#define SHMAT 21
-#define SHMDT 22
-#define SHMGET 23
-#define SHMCTL 24
-
-#define IPCOP_MASK(__x) (1UL << (__x))
-
-static int
-ipc_parse_version32 (int *cmd)
-{
- if (*cmd & IPC_64) {
- *cmd ^= IPC_64;
- return IPC_64;
- } else {
- return IPC_OLD;
- }
-}
-
-static int put_semid(void *user_semid, struct semid64_ds *s, int version)
-{
- int err2;
- switch (version) {
- case IPC_64: {
- struct semid64_ds32 *usp64 = (struct semid64_ds32 *) user_semid;
-
- if (!access_ok(VERIFY_WRITE, usp64, sizeof(*usp64))) {
- err2 = -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);
- break;
- }
- default: {
- struct semid_ds32 *usp32 = (struct semid_ds32 *) user_semid;
-
- if (!access_ok(VERIFY_WRITE, usp32, sizeof(*usp32))) {
- err2 = -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);
- break;
- }
- }
- return err2;
-}
-
-static int
-semctl32 (int first, int second, int third, void *uptr)
-{
- union semun fourth;
- u32 pad;
- int err;
- struct semid64_ds s;
- mm_segment_t old_fs;
- int version = ipc_parse_version32(&third);
-
- if (!uptr)
- return -EINVAL;
- if (get_user(pad, (u32 *)uptr))
- return -EFAULT;
- if (third == SETVAL)
- fourth.val = (int)pad;
- else
- fourth.__pad = (void *)A(pad);
- switch (third) {
- 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 = &s;
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_semctl(first, second, third, fourth);
- set_fs(old_fs);
- if (!err)
- err = put_semid((void *)A(pad), &s, version);
- break;
- default:
- err = -EINVAL;
- break;
- }
- 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 >= 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) ? -EFAULT : 0);
- if (err)
- 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 (!version) {
- struct ipc_kludge *uipck = (struct ipc_kludge *)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 = (void *)A(ipck.msgp);
- msgtyp = ipck.msgtyp;
- }
- if (second >= MAXBUF-sizeof(struct msgbuf))
- return -EINVAL;
- 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
-msgctl32 (int first, int second, void *uptr)
-{
- int err = -EINVAL, err2;
- struct msqid_ds m;
- struct msqid64_ds m64;
- struct msqid_ds32 *up32 = (struct msqid_ds32 *)uptr;
- struct msqid64_ds32 *up64 = (struct msqid64_ds32 *)uptr;
- mm_segment_t old_fs;
- int version = ipc_parse_version32(&second);
-
- switch (second) {
- case IPC_INFO:
- case IPC_RMID:
- case MSG_INFO:
- err = sys_msgctl(first, second, (struct msqid_ds *)uptr);
- break;
-
- case IPC_SET:
- if (version == IPC_64) {
- 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 {
- 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, &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, (void *) &m64);
- set_fs(old_fs);
- if (version == IPC_64) {
- if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) {
- err = -EFAULT;
- break;
- }
- err2 = __put_user(m64.msg_perm.key, &up64->msg_perm.key);
- err2 |= __put_user(m64.msg_perm.uid, &up64->msg_perm.uid);
- err2 |= __put_user(m64.msg_perm.gid, &up64->msg_perm.gid);
- err2 |= __put_user(m64.msg_perm.cuid, &up64->msg_perm.cuid);
- err2 |= __put_user(m64.msg_perm.cgid, &up64->msg_perm.cgid);
- err2 |= __put_user(m64.msg_perm.mode, &up64->msg_perm.mode);
- err2 |= __put_user(m64.msg_perm.seq, &up64->msg_perm.seq);
- err2 |= __put_user(m64.msg_stime, &up64->msg_stime);
- err2 |= __put_user(m64.msg_rtime, &up64->msg_rtime);
- err2 |= __put_user(m64.msg_ctime, &up64->msg_ctime);
- err2 |= __put_user(m64.msg_cbytes, &up64->msg_cbytes);
- err2 |= __put_user(m64.msg_qnum, &up64->msg_qnum);
- err2 |= __put_user(m64.msg_qbytes, &up64->msg_qbytes);
- err2 |= __put_user(m64.msg_lspid, &up64->msg_lspid);
- err2 |= __put_user(m64.msg_lrpid, &up64->msg_lrpid);
- if (err2)
- err = -EFAULT;
- } else {
- if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32))) {
- err = -EFAULT;
- break;
- }
- err2 = __put_user(m64.msg_perm.key, &up32->msg_perm.key);
- err2 |= __put_user(m64.msg_perm.uid, &up32->msg_perm.uid);
- err2 |= __put_user(m64.msg_perm.gid, &up32->msg_perm.gid);
- err2 |= __put_user(m64.msg_perm.cuid, &up32->msg_perm.cuid);
- err2 |= __put_user(m64.msg_perm.cgid, &up32->msg_perm.cgid);
- err2 |= __put_user(m64.msg_perm.mode, &up32->msg_perm.mode);
- err2 |= __put_user(m64.msg_perm.seq, &up32->msg_perm.seq);
- err2 |= __put_user(m64.msg_stime, &up32->msg_stime);
- err2 |= __put_user(m64.msg_rtime, &up32->msg_rtime);
- err2 |= __put_user(m64.msg_ctime, &up32->msg_ctime);
- err2 |= __put_user(m64.msg_cbytes, &up32->msg_cbytes);
- err2 |= __put_user(m64.msg_qnum, &up32->msg_qnum);
- err2 |= __put_user(m64.msg_qbytes, &up32->msg_qbytes);
- err2 |= __put_user(m64.msg_lspid, &up32->msg_lspid);
- err2 |= __put_user(m64.msg_lrpid, &up32->msg_lrpid);
- if (err2)
- err = -EFAULT;
- }
- break;
- }
- return err;
-}
-
-static int
-shmat32 (int first, int second, int third, int version, void *uptr)
-{
- unsigned long raddr;
- u32 *uaddr = (u32 *)A((u32)third);
- int err;
-
- if (version == 1)
- return -EINVAL; /* iBCS2 emulator entry point: unsupported */
- err = do_shmat(first, uptr, second, &raddr);
- if (err)
- return err;
- return put_user(raddr, uaddr);
-}
-
-static int put_shmid64(struct shmid64_ds *s64p, void *uptr, int version)
-{
- int err2;
-#define s64 (*s64p)
- if (version == IPC_64) {
- struct shmid64_ds32 *up64 = (struct shmid64_ds32 *)uptr;
-
- if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64)))
- return -EFAULT;
-
- 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 {
- struct shmid_ds32 *up32 = (struct shmid_ds32 *)uptr;
-
- if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32)))
- return -EFAULT;
-
- 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);
- }
-#undef s64
- return err2 ? -EFAULT : 0;
-}
-static int
-shmctl32 (int first, int second, void *uptr)
-{
- int err = -EFAULT, err2;
- struct shmid_ds s;
- struct shmid64_ds s64;
- mm_segment_t old_fs;
- struct shm_info32 *uip = (struct shm_info32 *)uptr;
- struct shm_info si;
- int version = ipc_parse_version32(&second);
- struct shminfo64 smi;
- struct shminfo *usi32 = (struct shminfo *) uptr;
- struct shminfo64_32 *usi64 = (struct shminfo64_32 *) uptr;
-
- switch (second) {
- case IPC_INFO:
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_shmctl(first, second, (struct shmid_ds *)&smi);
- set_fs(old_fs);
-
- if (version == IPC_64) {
- if (!access_ok(VERIFY_WRITE, usi64, sizeof(*usi64))) {
- err = -EFAULT;
- break;
- }
- err2 = __put_user(smi.shmmax, &usi64->shmmax);
- err2 |= __put_user(smi.shmmin, &usi64->shmmin);
- err2 |= __put_user(smi.shmmni, &usi64->shmmni);
- err2 |= __put_user(smi.shmseg, &usi64->shmseg);
- err2 |= __put_user(smi.shmall, &usi64->shmall);
- } else {
- if (!access_ok(VERIFY_WRITE, usi32, sizeof(*usi32))) {
- err = -EFAULT;
- break;
- }
- err2 = __put_user(smi.shmmax, &usi32->shmmax);
- err2 |= __put_user(smi.shmmin, &usi32->shmmin);
- err2 |= __put_user(smi.shmmni, &usi32->shmmni);
- err2 |= __put_user(smi.shmseg, &usi32->shmseg);
- err2 |= __put_user(smi.shmall, &usi32->shmall);
- }
- if (err2)
- err = -EFAULT;
- break;
-
- case IPC_RMID:
- case SHM_LOCK:
- case SHM_UNLOCK:
- err = sys_shmctl(first, second, (struct shmid_ds *)uptr);
- break;
-
- case IPC_SET:
- if (version == IPC_64) {
- struct shmid64_ds32 *up64 = (struct shmid64_ds32 *)uptr;
- 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 {
- struct shmid_ds32 *up32 = (struct shmid_ds32 *)uptr;
- 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, &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, (void *) &s64);
- set_fs(old_fs);
-
- if (err < 0)
- break;
- err2 = put_shmid64(&s64, uptr, version);
- if (err2)
- err = err2;
- break;
-
- case SHM_INFO:
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- err = sys_shmctl(first, second, (void *)&si);
- set_fs(old_fs);
- if (err < 0)
- break;
-
- if (!access_ok(VERIFY_WRITE, uip, sizeof(*uip))) {
- err = -EFAULT;
- 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;
-}
-
-extern int sem_ctls[];
-
-static long semtimedop32(int semid, struct sembuf *sb,
- unsigned nsops, struct compat_timespec *ts32)
-{
- struct timespec ts;
- mm_segment_t oldfs = get_fs();
- long ret;
-
- if (nsops > sem_ctls[2])
- return -E2BIG;
- if (!access_ok(VERIFY_READ, sb, nsops * sizeof(struct sembuf)))
- return -EFAULT;
- if (ts32 && get_compat_timespec(&ts, ts32))
- return -EFAULT;
-
- set_fs(KERNEL_DS);
- ret = sys_semtimedop(semid, sb, nsops, ts32 ? &ts : NULL);
- set_fs(oldfs);
- return ret;
-}
+#include <asm-i386/ipc.h>
asmlinkage long
-sys32_ipc (u32 call, int first, int second, int third, u32 ptr, u32 fifth)
+sys32_ipc(u32 call, int first, int second, int third,
+ compat_uptr_t ptr, u32 fifth)
{
int version;
switch (call) {
case SEMOP:
/* struct sembuf is the same on 32 and 64bit :)) */
- return sys_semtimedop(first, (struct sembuf *)AA(ptr), second,
- NULL);
- case TIMEDSEMOP:
- return semtimedop32(first, (struct sembuf *)AA(ptr), second,
- (struct compat_timespec *)AA(fifth));
+ return sys_semtimedop(first, compat_ptr(ptr), second, NULL);
+ case SEMTIMEDOP:
+ return compat_sys_semtimedop(first, compat_ptr(ptr), second,
+ compat_ptr(fifth));
case SEMGET:
return sys_semget(first, second, third);
case SEMCTL:
- return semctl32(first, second, third, (void *)AA(ptr));
+ return compat_sys_semctl(first, second, third, compat_ptr(ptr));
case MSGSND:
- return do_sys32_msgsnd(first, second, third, (void *)AA(ptr));
+ return compat_sys_msgsnd(first, second, third, compat_ptr(ptr));
case MSGRCV:
- return do_sys32_msgrcv(first, second, fifth, third, version, (void *)AA(ptr));
+ return compat_sys_msgrcv(first, second, fifth, third,
+ version, compat_ptr(ptr));
case MSGGET:
return sys_msgget((key_t) first, second);
case MSGCTL:
- return msgctl32(first, second, (void *)AA(ptr));
+ return compat_sys_msgctl(first, second, compat_ptr(ptr));
case SHMAT:
- return shmat32(first, second, third, version, (void *)AA(ptr));
+ return compat_sys_shmat(first, second, third, version,
+ compat_ptr(ptr));
break;
case SHMDT:
- return sys_shmdt((char *)AA(ptr));
+ return sys_shmdt(compat_ptr(ptr));
case SHMGET:
return sys_shmget(first, second, third);
case SHMCTL:
- return shmctl32(first, second, (void *)AA(ptr));
+ return compat_sys_shmctl(first, second, compat_ptr(ptr));
}
return -ENOSYS;
}
-
typedef s32 compat_ssize_t;
typedef s32 compat_time_t;
typedef s32 compat_clock_t;
+typedef s32 compat_key_t;
typedef s32 compat_pid_t;
typedef u16 compat_uid_t;
typedef u16 compat_gid_t;
#define COMPAT_OFF_T_MAX 0x7fffffff
#define COMPAT_LOFF_T_MAX 0x7fffffffffffffffL
+struct compat_ipc64_perm {
+ compat_key_t key;
+ compat_uid32_t uid;
+ compat_gid32_t gid;
+ compat_uid32_t cuid;
+ compat_gid32_t cgid;
+ unsigned short mode;
+ unsigned short __pad1;
+ unsigned short seq;
+ unsigned short __pad2;
+ compat_ulong_t unused1;
+ compat_ulong_t unused2;
+};
+
+struct compat_semid64_ds {
+ struct compat_ipc64_perm sem_perm;
+ compat_time_t sem_otime;
+ compat_ulong_t __unused1;
+ compat_time_t sem_ctime;
+ compat_ulong_t __unused2;
+ compat_ulong_t sem_nsems;
+ compat_ulong_t __unused3;
+ compat_ulong_t __unused4;
+};
+
+struct compat_msqid64_ds {
+ struct compat_ipc64_perm msg_perm;
+ compat_time_t msg_stime;
+ compat_ulong_t __unused1;
+ compat_time_t msg_rtime;
+ compat_ulong_t __unused2;
+ compat_time_t msg_ctime;
+ compat_ulong_t __unused3;
+ 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 compat_shmid64_ds {
+ struct compat_ipc64_perm shm_perm;
+ compat_size_t shm_segsz;
+ compat_time_t shm_atime;
+ compat_ulong_t __unused1;
+ compat_time_t shm_dtime;
+ compat_ulong_t __unused2;
+ compat_time_t shm_ctime;
+ compat_ulong_t __unused3;
+ compat_pid_t shm_cpid;
+ compat_pid_t shm_lpid;
+ compat_ulong_t shm_nattch;
+ compat_ulong_t __unused4;
+ compat_ulong_t __unused5;
+};
+
/*
* A pointer passed in from user mode. This should not be used for syscall parameters,
* just declare them as pointers because the syscall entry code will have appropriately
typedef s32 compat_pid_t;
typedef u16 compat_uid_t;
typedef u16 compat_gid_t;
+typedef u32 compat_uid32_t;
+typedef u32 compat_gid32_t;
typedef u16 compat_mode_t;
typedef u32 compat_ino_t;
typedef u16 compat_dev_t;
typedef s32 compat_daddr_t;
typedef u32 compat_caddr_t;
typedef __kernel_fsid_t compat_fsid_t;
+typedef s32 compat_key_t;
typedef s32 compat_timer_t;
typedef s32 compat_int_t;
return (void *) (stack - len);
}
+struct compat_ipc64_perm {
+ compat_key_t key;
+ compat_uid32_t uid;
+ compat_gid32_t gid;
+ compat_uid32_t cuid;
+ compat_gid32_t cgid;
+ compat_mode_t mode;
+ unsigned short __pad1;
+ unsigned short seq;
+ unsigned short __pad2;
+ unsigned int __unused1;
+ unsigned int __unused2;
+};
+
+struct compat_semid64_ds {
+ struct compat_ipc64_perm sem_perm;
+ compat_time_t sem_otime;
+ compat_ulong_t __pad1;
+ compat_time_t sem_ctime;
+ compat_ulong_t __pad2;
+ compat_ulong_t sem_nsems;
+ compat_ulong_t __unused1;
+ compat_ulong_t __unused2;
+};
+
+struct compat_msqid64_ds {
+ struct compat_ipc64_perm msg_perm;
+ compat_time_t msg_stime;
+ compat_ulong_t __pad1;
+ compat_time_t msg_rtime;
+ compat_ulong_t __pad2;
+ compat_time_t msg_ctime;
+ compat_ulong_t __pad3;
+ 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 __unused1;
+ compat_ulong_t __unused2;
+};
+
+struct compat_shmid64_ds {
+ struct compat_ipc64_perm shm_perm;
+ compat_size_t shm_segsz;
+ compat_time_t shm_atime;
+ compat_ulong_t __pad1;
+ compat_time_t shm_dtime;
+ compat_ulong_t __pad2;
+ compat_time_t shm_ctime;
+ compat_ulong_t __pad3;
+ compat_pid_t shm_cpid;
+ compat_pid_t shm_lpid;
+ compat_ulong_t shm_nattch;
+ compat_ulong_t __unused1;
+ compat_ulong_t __unused2;
+};
#endif /* _ASM_S390X_COMPAT_H */
typedef u32 compat_caddr_t;
typedef __kernel_fsid_t compat_fsid_t;
typedef u32 compat_timer_t;
+typedef s32 compat_key_t;
typedef s32 compat_int_t;
typedef s32 compat_long_t;
#define COMPAT_OFF_T_MAX 0x7fffffff
#define COMPAT_LOFF_T_MAX 0x7fffffffffffffff
+struct compat_ipc64_perm {
+ compat_key_t key;
+ compat_uid32_t uid;
+ compat_gid32_t gid;
+ compat_uid32_t cuid;
+ compat_gid32_t cgid;
+ unsigned short mode;
+ unsigned short __pad1;
+ unsigned short seq;
+ unsigned short __pad2;
+ compat_ulong_t unused1;
+ compat_ulong_t unused2;
+};
+
+struct compat_semid64_ds {
+ struct compat_ipc64_perm sem_perm;
+ compat_time_t sem_otime;
+ compat_ulong_t __unused1;
+ compat_time_t sem_ctime;
+ compat_ulong_t __unused2;
+ compat_ulong_t sem_nsems;
+ compat_ulong_t __unused3;
+ compat_ulong_t __unused4;
+};
+
+struct compat_msqid64_ds {
+ struct compat_ipc64_perm msg_perm;
+ compat_time_t msg_stime;
+ compat_ulong_t __unused1;
+ compat_time_t msg_rtime;
+ compat_ulong_t __unused2;
+ compat_time_t msg_ctime;
+ compat_ulong_t __unused3;
+ 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 compat_shmid64_ds {
+ struct compat_ipc64_perm shm_perm;
+ compat_size_t shm_segsz;
+ compat_time_t shm_atime;
+ compat_ulong_t __unused1;
+ compat_time_t shm_dtime;
+ compat_ulong_t __unused2;
+ compat_time_t shm_ctime;
+ compat_ulong_t __unused3;
+ compat_pid_t shm_cpid;
+ compat_pid_t shm_lpid;
+ compat_ulong_t shm_nattch;
+ compat_ulong_t __unused4;
+ compat_ulong_t __unused5;
+};
+
/*
* A pointer passed in from user mode. This should not
* be used for syscall parameters, just declare them
#include <linux/stat.h>
#include <linux/param.h> /* for HZ */
+#include <linux/sem.h>
+
#include <asm/compat.h>
#define compat_jiffies_to_clock_t(x) \
compat_uptr_t sival_ptr;
} compat_sigval_t;
+long compat_sys_semctl(int first, int second, int third, void __user *uptr);
+long compat_sys_msgsnd(int first, int second, int third, void __user *uptr);
+long compat_sys_msgrcv(int first, int second, int msgtyp, int third,
+ int version, void __user *uptr);
+long compat_sys_msgctl(int first, int second, void __user *uptr);
+long compat_sys_shmat(int first, int second, compat_uptr_t third, int version,
+ void __user *uptr);
+long compat_sys_shmctl(int first, int second, void __user *uptr);
+long compat_sys_semtimedop(int semid, struct sembuf __user *tsems,
+ unsigned nsems, const struct compat_timespec __user *timeout);
#endif /* CONFIG_COMPAT */
#endif /* _LINUX_COMPAT_H */
obj-y := util.o
+obj-$(CONFIG_SYSVIPC_COMPAT) += compat.o
obj-$(CONFIG_SYSVIPC) += msg.o sem.o shm.o
--- /dev/null
+/*
+ * 32 bit compatibility code for System V IPC
+ *
+ * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1999 Arun Sharma <arun.sharma@intel.com>
+ * Copyright (C) 2000 VA Linux Co
+ * Copyright (C) 2000 Don Dugger <n0ano@valinux.com>
+ * Copyright (C) 2000 Hewlett-Packard Co.
+ * Copyright (C) 2000 David Mosberger-Tang <davidm@hpl.hp.com>
+ * Copyright (C) 2000 Gerhard Tonn (ton@de.ibm.com)
+ * Copyright (C) 2000-2002 Andi Kleen, SuSE Labs (x86-64 port)
+ * Copyright (C) 2000 Silicon Graphics, Inc.
+ * Copyright (C) 2001 IBM
+ * Copyright (C) 2004 IBM Deutschland Entwicklung GmbH, IBM Corporation
+ * Copyright (C) 2004 Arnd Bergmann (arnd@arndb.de)
+ *
+ * This code is collected from the versions for sparc64, mips64, s390x, ia64,
+ * ppc64 and x86_64, all of which are based on the original sparc64 version
+ * by Jakub Jelinek.
+ *
+ */
+#include <linux/compat.h>
+#include <linux/config.h>
+#include <linux/errno.h>
+#include <linux/highuid.h>
+#include <linux/init.h>
+#include <linux/msg.h>
+#include <linux/shm.h>
+#include <linux/slab.h>
+#include <linux/syscalls.h>
+
+#include <asm/semaphore.h>
+#include <asm/uaccess.h>
+
+#include "util.h"
+
+struct compat_msgbuf {
+ compat_long_t mtype;
+ char mtext[1];
+};
+
+struct compat_ipc_perm {
+ 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 compat_semid_ds {
+ struct compat_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 compat_msqid_ds {
+ struct compat_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 compat_shmid_ds {
+ struct compat_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 shm_unused;
+ compat_uptr_t shm_unused2;
+ compat_uptr_t shm_unused3;
+};
+
+struct compat_ipc_kludge {
+ compat_uptr_t msgp;
+ compat_long_t msgtyp;
+};
+
+struct compat_shminfo64 {
+ compat_ulong_t shmmax;
+ compat_ulong_t shmmin;
+ compat_ulong_t shmmni;
+ compat_ulong_t shmseg;
+ compat_ulong_t shmall;
+ compat_ulong_t __unused1;
+ compat_ulong_t __unused2;
+ compat_ulong_t __unused3;
+ compat_ulong_t __unused4;
+};
+
+struct compat_shm_info {
+ compat_int_t used_ids;
+ compat_ulong_t shm_tot, shm_rss, shm_swp;
+ compat_ulong_t swap_attempts, swap_successes;
+};
+
+extern int sem_ctls[];
+#define sc_semopm (sem_ctls[2])
+#define MAXBUF (64*1024)
+
+static inline int compat_ipc_parse_version(int *cmd)
+{
+ int version = *cmd & IPC_64;
+
+ /* this is tricky: architectures that have support for the old
+ * ipc structures in 64 bit binaries need to have IPC_64 set
+ * in cmd, the others need to have it cleared */
+#ifndef ipc_parse_version
+ *cmd |= IPC_64;
+#else
+ *cmd &= ~IPC_64;
+#endif
+ return version;
+}
+
+static inline int __get_compat_ipc64_perm(struct ipc64_perm *p64,
+ struct compat_ipc64_perm *up64)
+{
+ int err;
+
+ err = __get_user(p64->uid, &up64->uid);
+ err |= __get_user(p64->gid, &up64->gid);
+ err |= __get_user(p64->mode, &up64->mode);
+ return err;
+}
+
+static inline int __get_compat_ipc_perm(struct ipc64_perm *p,
+ struct compat_ipc_perm *up)
+{
+ int err;
+
+ err = __get_user(p->uid, &up->uid);
+ err |= __get_user(p->gid, &up->gid);
+ err |= __get_user(p->mode, &up->mode);
+ return err;
+}
+
+static inline int __put_compat_ipc64_perm(struct ipc64_perm *p64,
+ struct compat_ipc64_perm *up64)
+{
+ int err;
+
+ err = __put_user(p64->key, &up64->key);
+ err |= __put_user(p64->uid, &up64->uid);
+ err |= __put_user(p64->gid, &up64->gid);
+ err |= __put_user(p64->cuid, &up64->cuid);
+ err |= __put_user(p64->cgid, &up64->cgid);
+ err |= __put_user(p64->mode, &up64->mode);
+ err |= __put_user(p64->seq, &up64->seq);
+ return err;
+}
+
+static inline int __put_compat_ipc_perm(struct ipc64_perm *p,
+ struct compat_ipc_perm *up)
+{
+ int err;
+ compat_uid_t u;
+ compat_gid_t g;
+
+ err = __put_user(p->key, &up->key);
+ SET_UID(u, p->uid);
+ err |= __put_user(u, &up->uid);
+ SET_GID(g, p->gid);
+ err |= __put_user(g, &up->gid);
+ SET_UID(u, p->cuid);
+ err |= __put_user(u, &up->cuid);
+ SET_GID(g, p->cgid);
+ err |= __put_user(g, &up->cgid);
+ err |= __put_user(p->mode, &up->mode);
+ err |= __put_user(p->seq, &up->seq);
+ return err;
+}
+
+static inline int get_compat_semid64_ds(struct semid64_ds *s64,
+ struct compat_semid64_ds *up64)
+{
+ if (!access_ok (VERIFY_READ, up64, sizeof(*up64)))
+ return -EFAULT;
+ return __get_compat_ipc64_perm(&s64->sem_perm, &up64->sem_perm);
+}
+
+static inline int get_compat_semid_ds(struct semid64_ds *s,
+ struct compat_semid_ds *up)
+{
+ if (!access_ok (VERIFY_READ, up, sizeof(*up)))
+ return -EFAULT;
+ return __get_compat_ipc_perm(&s->sem_perm, &up->sem_perm);
+}
+
+static inline int put_compat_semid64_ds(struct semid64_ds *s64,
+ struct compat_semid64_ds *up64)
+{
+ int err;
+
+ if (!access_ok (VERIFY_WRITE, up64, sizeof(*up64)))
+ return -EFAULT;
+ err = __put_compat_ipc64_perm(&s64->sem_perm, &up64->sem_perm);
+ err |= __put_user(s64->sem_otime, &up64->sem_otime);
+ err |= __put_user(s64->sem_ctime, &up64->sem_ctime);
+ err |= __put_user(s64->sem_nsems, &up64->sem_nsems);
+ return err;
+}
+
+static inline int put_compat_semid_ds(struct semid64_ds *s,
+ struct compat_semid_ds *up)
+{
+ int err;
+
+ if (!access_ok (VERIFY_WRITE, up, sizeof(*up)))
+ err = -EFAULT;
+ err = __put_compat_ipc_perm(&s->sem_perm, &up->sem_perm);
+ err |= __put_user(s->sem_otime, &up->sem_otime);
+ err |= __put_user(s->sem_ctime, &up->sem_ctime);
+ err |= __put_user(s->sem_nsems, &up->sem_nsems);
+ return err;
+}
+
+static inline int do_semctl(int semid, int semnum, int cmd, union semun arg)
+{
+ mm_segment_t old_fs;
+ int err;
+
+ old_fs = get_fs();
+ set_fs(KERNEL_DS);
+ err = sys_semctl(semid, semnum, cmd, arg);
+ set_fs(old_fs);
+
+ return err;
+}
+long compat_sys_semctl(int first, int second, int third, void __user *uptr)
+{
+ union semun fourth;
+ u32 pad;
+ int err, err2;
+ struct semid64_ds s64;
+ int version = compat_ipc_parse_version(&third);
+
+ if (!uptr)
+ return -EINVAL;
+ if (get_user(pad, (u32 __user *) uptr))
+ return -EFAULT;
+ if ((third & (~IPC_64)) == SETVAL)
+ fourth.val = (int) pad;
+ else
+ fourth.__pad = compat_ptr(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 SETVAL:
+ case SETALL:
+ err = sys_semctl(first, second, third, fourth);
+ break;
+
+ case IPC_STAT:
+ case SEM_STAT:
+ fourth.__pad = &s64;
+ err = do_semctl(first, second, third, fourth);
+ if (err < 0)
+ break;
+
+ if (version == IPC_64) {
+ err2 = put_compat_semid64_ds(&s64, compat_ptr(pad));
+ } else {
+ err2 = put_compat_semid_ds(&s64, compat_ptr(pad));
+ }
+ if (err2)
+ err = -EFAULT;
+ break;
+
+ case IPC_SET:
+ if (version == IPC_64) {
+ err = get_compat_semid64_ds(&s64, compat_ptr(pad));
+ } else {
+ err = get_compat_semid_ds(&s64, compat_ptr(pad));
+ }
+ if (err)
+ break;
+
+ fourth.__pad = &s64;
+ err = do_semctl(first, second, third, fourth);
+ break;
+
+ default:
+ err = -EINVAL;
+ break;
+ }
+ return err;
+}
+
+long compat_sys_msgsnd(int first, int second, int third, void __user *uptr)
+{
+ struct msgbuf *p;
+ struct compat_msgbuf __user *up;
+ mm_segment_t old_fs;
+ int err;
+
+ if (first < 0)
+ return -EINVAL;
+ if (second < 0 || (second >= MAXBUF - sizeof(struct msgbuf)))
+ return -EINVAL;
+
+ p = kmalloc(second + sizeof(struct msgbuf), GFP_USER);
+ if (!p)
+ return -ENOMEM;
+ err = -EFAULT;
+ up = uptr;
+ 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, p, second, third);
+ set_fs(old_fs);
+out:
+ kfree(p);
+ return err;
+}
+
+long compat_sys_msgrcv(int first, int second, int msgtyp, int third,
+ int version, void __user *uptr)
+{
+ struct msgbuf *p;
+ struct compat_msgbuf __user *up;
+ mm_segment_t old_fs;
+ int err;
+
+ if (first < 0)
+ return -EINVAL;
+ if (second < 0 || (second >= MAXBUF - sizeof(struct msgbuf)))
+ return -EINVAL;
+
+ if (!version) {
+ struct compat_ipc_kludge __user *uipck = uptr;
+ struct compat_ipc_kludge ipck;
+
+ err = -EINVAL;
+ if (!uptr)
+ goto out;
+ err = -EFAULT;
+ if (copy_from_user (&ipck, uipck, sizeof(ipck)))
+ 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, 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 inline int get_compat_msqid64(struct msqid64_ds *m64,
+ struct compat_msqid64_ds __user *up64)
+{
+ int err;
+
+ if (!access_ok(VERIFY_READ, up64, sizeof(*up64)))
+ return -EFAULT;
+ err = __get_compat_ipc64_perm(&m64->msg_perm, &up64->msg_perm);
+ err |= __get_user(m64->msg_qbytes, &up64->msg_qbytes);
+ return err;
+}
+
+static inline int get_compat_msqid(struct msqid64_ds *m,
+ struct compat_msqid_ds __user *up)
+{
+ int err;
+
+ if (!access_ok(VERIFY_READ, up, sizeof(*up)))
+ return -EFAULT;
+ err = __get_compat_ipc_perm(&m->msg_perm, &up->msg_perm);
+ err |= __get_user(m->msg_qbytes, &up->msg_qbytes);
+ return err;
+}
+
+static inline int put_compat_msqid64_ds(struct msqid64_ds *m64,
+ struct compat_msqid64_ds __user __user *up64)
+{
+ int err;
+
+ if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64)))
+ return -EFAULT;
+ err = __put_compat_ipc64_perm(&m64->msg_perm, &up64->msg_perm);
+ err |= __put_user(m64->msg_stime, &up64->msg_stime);
+ err |= __put_user(m64->msg_rtime, &up64->msg_rtime);
+ err |= __put_user(m64->msg_ctime, &up64->msg_ctime);
+ err |= __put_user(m64->msg_cbytes, &up64->msg_cbytes);
+ err |= __put_user(m64->msg_qnum, &up64->msg_qnum);
+ err |= __put_user(m64->msg_qbytes, &up64->msg_qbytes);
+ err |= __put_user(m64->msg_lspid, &up64->msg_lspid);
+ err |= __put_user(m64->msg_lrpid, &up64->msg_lrpid);
+ return err;
+}
+
+static inline int put_compat_msqid_ds(struct msqid64_ds *m,
+ struct compat_msqid_ds __user *up)
+{
+ int err;
+
+ if (!access_ok(VERIFY_WRITE, up, sizeof(*up)))
+ return -EFAULT;
+ err = __put_compat_ipc_perm(&m->msg_perm, &up->msg_perm);
+ err |= __put_user(m->msg_stime, &up->msg_stime);
+ err |= __put_user(m->msg_rtime, &up->msg_rtime);
+ err |= __put_user(m->msg_ctime, &up->msg_ctime);
+ err |= __put_user(m->msg_cbytes, &up->msg_cbytes);
+ err |= __put_user(m->msg_qnum, &up->msg_qnum);
+ err |= __put_user(m->msg_qbytes, &up->msg_qbytes);
+ err |= __put_user(m->msg_lspid, &up->msg_lspid);
+ err |= __put_user(m->msg_lrpid, &up->msg_lrpid);
+ return err;
+}
+
+static inline int do_msgctl(int first, int second, void __user *buf)
+{
+ mm_segment_t old_fs;
+ int err;
+
+ old_fs = get_fs();
+ set_fs(KERNEL_DS);
+ err = sys_msgctl(first, second, buf);
+ set_fs(old_fs);
+
+ return err;
+}
+
+long compat_sys_msgctl(int first, int second, void __user *uptr)
+{
+ int err, err2;
+ struct msqid64_ds m64;
+ int version = compat_ipc_parse_version(&second);
+
+ switch (second & (~IPC_64)) {
+ case IPC_INFO:
+ case IPC_RMID:
+ case MSG_INFO:
+ err = sys_msgctl(first, second, uptr);
+ break;
+
+ case IPC_SET:
+ if (version == IPC_64) {
+ err = get_compat_msqid64(&m64, uptr);
+ } else {
+ err = get_compat_msqid(&m64, uptr);
+ }
+ if (err)
+ break;
+
+ err = do_msgctl(first, second, &m64);
+ break;
+
+ case IPC_STAT:
+ case MSG_STAT:
+ err = do_msgctl(first, second, &m64);
+ if (err < 0)
+ break;
+
+ if (version == IPC_64) {
+ err2 = put_compat_msqid64_ds(&m64, uptr);
+ } else {
+ err2 = put_compat_msqid_ds(&m64, uptr);
+ }
+ if (err2)
+ err = -EFAULT;
+ break;
+
+ default:
+ err = -EINVAL;
+ break;
+ }
+ return err;
+}
+
+long compat_sys_shmat(int first, int second, compat_uptr_t third, int version,
+ void __user *uptr)
+{
+ int err;
+ unsigned long raddr;
+ compat_ulong_t __user *uaddr;
+
+ if (version == 1)
+ return -EINVAL;
+ err = do_shmat(first, uptr, second, &raddr);
+ if (err < 0)
+ return err;
+ uaddr = compat_ptr(third);
+ return put_user(raddr, uaddr);
+}
+
+static inline int get_compat_shmid64_ds(struct shmid64_ds *s64,
+ struct compat_shmid64_ds __user *up64)
+{
+ if (!access_ok(VERIFY_READ, up64, sizeof(*up64)))
+ return -EFAULT;
+ return __get_compat_ipc64_perm(&s64->shm_perm, &up64->shm_perm);
+}
+
+static inline int get_compat_shmid_ds(struct shmid64_ds *s,
+ struct compat_shmid_ds __user *up)
+{
+ if (!access_ok(VERIFY_READ, up, sizeof(*up)))
+ return -EFAULT;
+ return __get_compat_ipc_perm(&s->shm_perm, &up->shm_perm);
+}
+
+static inline int put_compat_shmid64_ds(struct shmid64_ds *s64,
+ struct compat_shmid64_ds __user *up64)
+{
+ int err;
+
+ if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64)))
+ return -EFAULT;
+ err = __put_compat_ipc64_perm(&s64->shm_perm, &up64->shm_perm);
+ err |= __put_user(s64->shm_atime, &up64->shm_atime);
+ err |= __put_user(s64->shm_dtime, &up64->shm_dtime);
+ err |= __put_user(s64->shm_ctime, &up64->shm_ctime);
+ err |= __put_user(s64->shm_segsz, &up64->shm_segsz);
+ err |= __put_user(s64->shm_nattch, &up64->shm_nattch);
+ err |= __put_user(s64->shm_cpid, &up64->shm_cpid);
+ err |= __put_user(s64->shm_lpid, &up64->shm_lpid);
+ return err;
+}
+
+static inline int put_compat_shmid_ds(struct shmid64_ds *s,
+ struct compat_shmid_ds __user *up)
+{
+ int err;
+
+ if (!access_ok(VERIFY_WRITE, up, sizeof(*up)))
+ return -EFAULT;
+ err = __put_compat_ipc_perm(&s->shm_perm, &up->shm_perm);
+ err |= __put_user(s->shm_atime, &up->shm_atime);
+ err |= __put_user(s->shm_dtime, &up->shm_dtime);
+ err |= __put_user(s->shm_ctime, &up->shm_ctime);
+ err |= __put_user(s->shm_segsz, &up->shm_segsz);
+ err |= __put_user(s->shm_nattch, &up->shm_nattch);
+ err |= __put_user(s->shm_cpid, &up->shm_cpid);
+ err |= __put_user(s->shm_lpid, &up->shm_lpid);
+ return err;
+}
+
+static inline int put_compat_shminfo64(struct shminfo64 *smi,
+ struct compat_shminfo64 __user *up64)
+{
+ int err;
+
+ if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64)))
+ return -EFAULT;
+ err = __put_user(smi->shmmax, &up64->shmmax);
+ err |= __put_user(smi->shmmin, &up64->shmmin);
+ err |= __put_user(smi->shmmni, &up64->shmmni);
+ err |= __put_user(smi->shmseg, &up64->shmseg);
+ err |= __put_user(smi->shmall, &up64->shmall);
+ return err;
+}
+
+static inline int put_compat_shminfo(struct shminfo64 *smi,
+ struct shminfo __user *up)
+{
+ int err;
+
+ if (!access_ok(VERIFY_WRITE, up, sizeof(*up)))
+ return -EFAULT;
+ err = __put_user(smi->shmmax, &up->shmmax);
+ err |= __put_user(smi->shmmin, &up->shmmin);
+ err |= __put_user(smi->shmmni, &up->shmmni);
+ err |= __put_user(smi->shmseg, &up->shmseg);
+ err |= __put_user(smi->shmall, &up->shmall);
+}
+
+static inline int put_compat_shm_info(struct shm_info *si,
+ struct compat_shm_info __user *uip)
+{
+ int err;
+
+ if (!access_ok(VERIFY_WRITE, uip, sizeof(*uip)))
+ return -EFAULT;
+ err = __put_user(si->used_ids, &uip->used_ids);
+ err |= __put_user(si->shm_tot, &uip->shm_tot);
+ err |= __put_user(si->shm_rss, &uip->shm_rss);
+ err |= __put_user(si->shm_swp, &uip->shm_swp);
+ err |= __put_user(si->swap_attempts, &uip->swap_attempts);
+ err |= __put_user(si->swap_successes, &uip->swap_successes);
+ return err;
+}
+
+static inline int do_shmctl(int shmid, int cmd, void *buf)
+{
+ mm_segment_t old_fs;
+ int err;
+
+ old_fs = get_fs();
+ set_fs(KERNEL_DS);
+ err = sys_shmctl(shmid, cmd, buf);
+ set_fs(old_fs);
+
+ return err;
+}
+
+long compat_sys_shmctl(int first, int second, void __user *uptr)
+{
+ struct shmid64_ds s64;
+ struct shminfo64 smi;
+ struct shm_info si;
+ int err, err2;
+ int version = compat_ipc_parse_version(&second);
+
+ switch (second & (~IPC_64)) {
+ case IPC_RMID:
+ case SHM_LOCK:
+ case SHM_UNLOCK:
+ err = sys_shmctl(first, second, uptr);
+ break;
+
+ case IPC_INFO:
+ err = do_shmctl(first, second, &smi);
+ if (err < 0)
+ break;
+
+ if (version == IPC_64) {
+ err2 = put_compat_shminfo64(&smi, uptr);
+ } else {
+ err2 = put_compat_shminfo(&smi, uptr);
+ }
+ if (err2)
+ err = -EFAULT;
+ break;
+
+
+ case IPC_SET:
+ if (version == IPC_64) {
+ err = get_compat_shmid64_ds(&s64, uptr);
+ } else {
+ err = get_compat_shmid_ds(&s64, uptr);
+ }
+ if (err)
+ break;
+
+ err = do_shmctl(first, second, &s64);
+ break;
+
+ case IPC_STAT:
+ case SHM_STAT:
+ err = do_shmctl(first, second, &s64);
+ if (err < 0)
+ break;
+
+ if (version == IPC_64) {
+ err2 = put_compat_shmid64_ds(&s64, uptr);
+ } else {
+ err2 = put_compat_shmid_ds(&s64, uptr);
+ }
+ if (err2)
+ err = -EFAULT;
+ break;
+
+ case SHM_INFO:
+ err = do_shmctl(first, second, &si);
+ if (err < 0)
+ break;
+ err2 = put_compat_shm_info(&si, uptr);
+ if (err2)
+ err = -EFAULT;
+ break;
+
+ default:
+ err = -EINVAL;
+ break;
+ }
+ return err;
+}
+
+long compat_sys_semtimedop(int semid, struct sembuf __user *tsems,
+ unsigned nsops, const struct compat_timespec __user *timeout)
+{
+ struct timespec ts, __user *ts64;
+
+ /* parameter checking precedence should mirror sys_semtimedop() */
+ if (nsops < 1 || semid < 0)
+ return -EINVAL;
+ if (nsops > sc_semopm)
+ return -E2BIG;
+ if (!access_ok(VERIFY_READ, tsems, nsops * sizeof(struct sembuf)))
+ return -EFAULT;
+ if (!timeout)
+ return sys_semtimedop(semid, tsems, nsops, 0);
+
+ ts64 = compat_alloc_user_space(sizeof(*ts64));
+ if (get_compat_timespec(&ts, timeout))
+ return -EFAULT;
+ if (copy_to_user(ts64, &ts, sizeof(ts)))
+ return -EFAULT;
+
+ return sys_semtimedop(semid, tsems, nsops, ts64);
+}
projects / linux / commitdiff