NetBSD/sys/compat/svr4/svr4_ipc.c

571 lines
14 KiB
C

/* $NetBSD: svr4_ipc.c,v 1.27 2014/11/09 18:16:55 maxv Exp $ */
/*-
* Copyright (c) 1995 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: svr4_ipc.c,v 1.27 2014/11/09 18:16:55 maxv Exp $");
#if defined(_KERNEL_OPT)
#include "opt_sysv.h"
#endif
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/shm.h>
#include <sys/msg.h>
#include <sys/sem.h>
#include <sys/proc.h>
#include <sys/uio.h>
#include <sys/time.h>
#include <sys/mman.h>
#include <sys/systm.h>
#include <sys/stat.h>
#include <sys/mount.h>
#include <sys/syscallargs.h>
#include <compat/svr4/svr4_types.h>
#include <compat/svr4/svr4_signal.h>
#include <compat/svr4/svr4_lwp.h>
#include <compat/svr4/svr4_ucontext.h>
#include <compat/svr4/svr4_syscallargs.h>
#include <compat/svr4/svr4_util.h>
#include <compat/svr4/svr4_ipc.h>
#if defined(SYSVMSG) || defined(SYSVSHM) || defined(SYSVSEM)
static void
svr4_to_bsd_ipc_perm(const struct svr4_ipc_perm *spp, struct ipc_perm *bpp)
{
bpp->_key = spp->key;
bpp->uid = spp->uid;
bpp->gid = spp->gid;
bpp->cuid = spp->cuid;
bpp->cgid = spp->cgid;
bpp->mode = spp->mode;
bpp->_seq = spp->seq;
}
static void
bsd_to_svr4_ipc_perm(const struct ipc_perm *bpp, struct svr4_ipc_perm *spp)
{
spp->key = bpp->_key;
spp->uid = bpp->uid;
spp->gid = bpp->gid;
spp->cuid = bpp->cuid;
spp->cgid = bpp->cgid;
spp->mode = bpp->mode;
spp->seq = bpp->_seq;
}
#endif
#ifdef SYSVSEM
static void
bsd_to_svr4_semid_ds(const struct semid_ds *bds, struct svr4_semid_ds *sds)
{
bsd_to_svr4_ipc_perm(&bds->sem_perm, &sds->sem_perm);
sds->sem_base = (struct svr4_sem *) bds->_sem_base;
sds->sem_nsems = bds->sem_nsems;
sds->sem_otime = bds->sem_otime;
sds->sem_ctime = bds->sem_ctime;
}
static void
svr4_to_bsd_semid_ds(const struct svr4_semid_ds *sds, struct semid_ds *bds)
{
svr4_to_bsd_ipc_perm(&sds->sem_perm, &bds->sem_perm);
bds->_sem_base = (struct __sem *) sds->sem_base;
bds->sem_nsems = sds->sem_nsems;
bds->sem_otime = sds->sem_otime;
bds->sem_ctime = sds->sem_ctime;
}
struct svr4_sys_semctl_args {
syscallarg(int) what;
syscallarg(int) semid;
syscallarg(int) semnum;
syscallarg(int) cmd;
syscallarg(union __semun) arg;
};
static int
svr4_semctl(struct lwp *l, const struct svr4_sys_semctl_args *uap, register_t *retval)
{
struct semid_ds sembuf;
struct svr4_semid_ds ssembuf;
int cmd, error;
void *pass_arg = NULL;
union __semun arg = SCARG(uap, arg);
cmd = SCARG(uap, cmd);
switch (cmd) {
case SVR4_IPC_SET:
pass_arg = &sembuf;
cmd = IPC_SET;
break;
case SVR4_IPC_STAT:
pass_arg = &sembuf;
cmd = IPC_STAT;
break;
case SVR4_IPC_RMID:
cmd = IPC_RMID;
break;
case SVR4_SEM_GETVAL:
cmd = GETVAL;
break;
case SVR4_SEM_GETPID:
cmd = GETPID;
break;
case SVR4_SEM_GETNCNT:
cmd = GETNCNT;
break;
case SVR4_SEM_GETZCNT:
cmd = GETZCNT;
break;
case SVR4_SEM_GETALL:
pass_arg = &arg;
cmd = GETALL;
break;
case SVR4_SEM_SETVAL:
pass_arg = &arg;
cmd = SETVAL;
break;
case SVR4_SEM_SETALL:
pass_arg = &arg;
cmd = SETALL;
break;
default:
return (EINVAL);
}
if (cmd == IPC_SET) {
error = copyin(SCARG(uap, arg).buf, &ssembuf, sizeof(ssembuf));
if (error)
return (error);
svr4_to_bsd_semid_ds(&ssembuf, &sembuf);
}
error = semctl1(l, SCARG(uap, semid), SCARG(uap, semnum), cmd,
pass_arg, retval);
if (error == 0 && cmd == IPC_STAT) {
bsd_to_svr4_semid_ds(&sembuf, &ssembuf);
error = copyout(&ssembuf, SCARG(uap, arg).buf, sizeof(ssembuf));
}
return (error);
}
struct svr4_sys_semget_args {
syscallarg(int) what;
syscallarg(svr4_key_t) key;
syscallarg(int) nsems;
syscallarg(int) semflg;
};
static int
svr4_semget(struct lwp *l, const struct svr4_sys_semget_args *uap, register_t *retval)
{
struct sys_semget_args ap;
SCARG(&ap, key) = SCARG(uap, key);
SCARG(&ap, nsems) = SCARG(uap, nsems);
SCARG(&ap, semflg) = SCARG(uap, semflg);
return sys_semget(l, &ap, retval);
}
struct svr4_sys_semop_args {
syscallarg(int) what;
syscallarg(int) semid;
syscallarg(struct svr4_sembuf *) sops;
syscallarg(u_int) nsops;
};
static int
svr4_semop(struct lwp *l, const struct svr4_sys_semop_args *uap, register_t *retval)
{
struct sys_semop_args ap;
SCARG(&ap, semid) = SCARG(uap, semid);
/* These are the same */
SCARG(&ap, sops) = (struct sembuf *) SCARG(uap, sops);
SCARG(&ap, nsops) = SCARG(uap, nsops);
return sys_semop(l, &ap, retval);
}
int
svr4_sys_semsys(struct lwp *l, const struct svr4_sys_semsys_args *uap, register_t *retval)
{
DPRINTF(("svr4_semsys(%d)\n", SCARG(uap, what)));
switch (SCARG(uap, what)) {
case SVR4_semctl:
return svr4_semctl(l, (const void *)uap, retval);
case SVR4_semget:
return svr4_semget(l, (const void *)uap, retval);
case SVR4_semop:
return svr4_semop(l, (const void *)uap, retval);
default:
return EINVAL;
}
}
#endif
#ifdef SYSVMSG
static void
bsd_to_svr4_msqid_ds(const struct msqid_ds *bds, struct svr4_msqid_ds *sds)
{
bsd_to_svr4_ipc_perm(&bds->msg_perm, &sds->msg_perm);
sds->msg_first = (struct svr4_msg *) bds->_msg_first;
sds->msg_last = (struct svr4_msg *) bds->_msg_last;
sds->msg_cbytes = bds->_msg_cbytes;
sds->msg_qnum = bds->msg_qnum;
sds->msg_qbytes = bds->msg_qbytes;
sds->msg_lspid = bds->msg_lspid;
sds->msg_lrpid = bds->msg_lrpid;
sds->msg_stime = bds->msg_stime;
sds->msg_rtime = bds->msg_rtime;
sds->msg_ctime = bds->msg_ctime;
#if 0
/* XXX What to put here? */
sds->msg_cv = 0;
sds->msg_qnum_cv = 0;
#endif
}
static void
svr4_to_bsd_msqid_ds(const struct svr4_msqid_ds *sds, struct msqid_ds *bds)
{
svr4_to_bsd_ipc_perm(&sds->msg_perm, &bds->msg_perm);
bds->_msg_first = (struct __msg *) sds->msg_first;
bds->_msg_last = (struct __msg *) sds->msg_last;
bds->_msg_cbytes = sds->msg_cbytes;
bds->msg_qnum = sds->msg_qnum;
bds->msg_qbytes = sds->msg_qbytes;
bds->msg_lspid = sds->msg_lspid;
bds->msg_lrpid = sds->msg_lrpid;
bds->msg_stime = sds->msg_stime;
bds->msg_rtime = sds->msg_rtime;
bds->msg_ctime = sds->msg_ctime;
#if 0
XXX sds->msg_cv
XXX sds->msg_qnum_cv
#endif
}
struct svr4_sys_msgsnd_args {
syscallarg(int) what;
syscallarg(int) msqid;
syscallarg(void *) msgp;
syscallarg(size_t) msgsz;
syscallarg(int) msgflg;
};
static int
svr4_msgsnd(struct lwp *l, const struct svr4_sys_msgsnd_args *uap, register_t *retval)
{
struct sys_msgsnd_args ap;
SCARG(&ap, msqid) = SCARG(uap, msqid);
SCARG(&ap, msgp) = SCARG(uap, msgp);
SCARG(&ap, msgsz) = SCARG(uap, msgsz);
SCARG(&ap, msgflg) = SCARG(uap, msgflg);
return sys_msgsnd(l, &ap, retval);
}
struct svr4_sys_msgrcv_args {
syscallarg(int) what;
syscallarg(int) msqid;
syscallarg(void *) msgp;
syscallarg(size_t) msgsz;
syscallarg(long) msgtyp;
syscallarg(int) msgflg;
};
static int
svr4_msgrcv(struct lwp *l, const struct svr4_sys_msgrcv_args *uap, register_t *retval)
{
struct sys_msgrcv_args ap;
SCARG(&ap, msqid) = SCARG(uap, msqid);
SCARG(&ap, msgp) = SCARG(uap, msgp);
SCARG(&ap, msgsz) = SCARG(uap, msgsz);
SCARG(&ap, msgtyp) = SCARG(uap, msgtyp);
SCARG(&ap, msgflg) = SCARG(uap, msgflg);
return sys_msgrcv(l, &ap, retval);
}
struct svr4_sys_msgget_args {
syscallarg(int) what;
syscallarg(svr4_key_t) key;
syscallarg(int) msgflg;
};
static int
svr4_msgget(struct lwp *l, const struct svr4_sys_msgget_args *uap, register_t *retval)
{
struct sys_msgget_args ap;
SCARG(&ap, key) = SCARG(uap, key);
SCARG(&ap, msgflg) = SCARG(uap, msgflg);
return sys_msgget(l, &ap, retval);
}
struct svr4_sys_msgctl_args {
syscallarg(int) what;
syscallarg(int) msqid;
syscallarg(int) cmd;
syscallarg(struct svr4_msqid_ds *) buf;
};
static int
svr4_msgctl(struct lwp *l, const struct svr4_sys_msgctl_args *uap, register_t *retval)
{
struct svr4_msqid_ds ss;
struct msqid_ds bs;
int error;
switch (SCARG(uap, cmd)) {
case SVR4_IPC_STAT:
error = msgctl1(l, SCARG(uap, msqid), IPC_STAT, &bs);
if (error == 0) {
bsd_to_svr4_msqid_ds(&bs, &ss);
error = copyout(&ss, SCARG(uap, buf), sizeof ss);
}
return error;
case SVR4_IPC_SET:
error = copyin(SCARG(uap, buf), &ss, sizeof ss);
if (error)
return error;
svr4_to_bsd_msqid_ds(&ss, &bs);
return msgctl1(l, SCARG(uap, msqid), IPC_SET, &bs);
case SVR4_IPC_RMID:
return msgctl1(l, SCARG(uap, msqid), IPC_RMID, NULL);
default:
return EINVAL;
}
}
int
svr4_sys_msgsys(struct lwp *l, const struct svr4_sys_msgsys_args *uap, register_t *retval)
{
DPRINTF(("svr4_msgsys(%d)\n", SCARG(uap, what)));
switch (SCARG(uap, what)) {
case SVR4_msgsnd:
return svr4_msgsnd(l, (const void *)uap, retval);
case SVR4_msgrcv:
return svr4_msgrcv(l, (const void *)uap, retval);
case SVR4_msgget:
return svr4_msgget(l, (const void *)uap, retval);
case SVR4_msgctl:
return svr4_msgctl(l, (const void *)uap, retval);
default:
return EINVAL;
}
}
#endif
#ifdef SYSVSHM
static void
bsd_to_svr4_shmid_ds(const struct shmid_ds *bds, struct svr4_shmid_ds *sds)
{
bsd_to_svr4_ipc_perm(&bds->shm_perm, &sds->shm_perm);
sds->shm_segsz = bds->shm_segsz;
sds->shm_lkcnt = 0;
sds->shm_lpid = bds->shm_lpid;
sds->shm_cpid = bds->shm_cpid;
sds->shm_amp = bds->_shm_internal;
sds->shm_nattch = bds->shm_nattch;
sds->shm_cnattch = 0;
sds->shm_atime = bds->shm_atime;
sds->shm_pad1 = 0;
sds->shm_dtime = bds->shm_dtime;
sds->shm_pad2 = 0;
sds->shm_ctime = bds->shm_ctime;
sds->shm_pad3 = 0;
}
static void
svr4_to_bsd_shmid_ds(const struct svr4_shmid_ds *sds, struct shmid_ds *bds)
{
svr4_to_bsd_ipc_perm(&sds->shm_perm, &bds->shm_perm);
bds->shm_segsz = sds->shm_segsz;
bds->shm_lpid = sds->shm_lpid;
bds->shm_cpid = sds->shm_cpid;
bds->_shm_internal = sds->shm_amp;
bds->shm_nattch = sds->shm_nattch;
bds->shm_atime = sds->shm_atime;
bds->shm_dtime = sds->shm_dtime;
bds->shm_ctime = sds->shm_ctime;
}
struct svr4_sys_shmat_args {
syscallarg(int) what;
syscallarg(int) shmid;
syscallarg(void *) shmaddr;
syscallarg(int) shmflg;
};
static int
svr4_shmat(struct lwp *l, const struct svr4_sys_shmat_args *uap, register_t *retval)
{
struct sys_shmat_args ap;
SCARG(&ap, shmid) = SCARG(uap, shmid);
SCARG(&ap, shmaddr) = SCARG(uap, shmaddr);
SCARG(&ap, shmflg) = SCARG(uap, shmflg);
return sys_shmat(l, &ap, retval);
}
struct svr4_sys_shmdt_args {
syscallarg(int) what;
syscallarg(void *) shmaddr;
};
static int
svr4_shmdt(struct lwp *l, const struct svr4_sys_shmdt_args *uap, register_t *retval)
{
struct sys_shmdt_args ap;
SCARG(&ap, shmaddr) = SCARG(uap, shmaddr);
return sys_shmdt(l, &ap, retval);
}
struct svr4_sys_shmget_args {
syscallarg(int) what;
syscallarg(key_t) key;
syscallarg(int) size;
syscallarg(int) shmflg;
};
static int
svr4_shmget(struct lwp *l, const struct svr4_sys_shmget_args *uap, register_t *retval)
{
struct sys_shmget_args ap;
SCARG(&ap, key) = SCARG(uap, key);
SCARG(&ap, size) = SCARG(uap, size);
SCARG(&ap, shmflg) = SCARG(uap, shmflg);
return sys_shmget(l, &ap, retval);
}
struct svr4_sys_shmctl_args {
syscallarg(int) what;
syscallarg(int) shmid;
syscallarg(int) cmd;
syscallarg(struct svr4_shmid_ds *) buf;
};
static int
svr4_shmctl(struct lwp *l, const struct svr4_sys_shmctl_args *uap, register_t *retval)
{
struct shmid_ds bs;
struct svr4_shmid_ds ss;
int error;
switch (SCARG(uap, cmd)) {
case SVR4_IPC_STAT:
error = shmctl1(l, SCARG(uap, shmid), IPC_STAT, &bs);
if (error == 0) {
bsd_to_svr4_shmid_ds(&bs, &ss);
error = copyout(&ss, SCARG(uap, buf), sizeof ss);
}
return error;
case SVR4_IPC_SET:
error = copyin(SCARG(uap, buf), &ss, sizeof ss);
if (error)
return error;
svr4_to_bsd_shmid_ds(&ss, &bs);
return shmctl1(l, SCARG(uap, shmid), IPC_SET, &bs);
case SVR4_IPC_RMID:
return shmctl1(l, SCARG(uap, shmid), IPC_RMID, NULL);
case SVR4_SHM_LOCK:
return shmctl1(l, SCARG(uap, shmid), SHM_LOCK, NULL);
case SVR4_SHM_UNLOCK:
return shmctl1(l, SCARG(uap, shmid), SHM_UNLOCK, NULL);
default:
return EINVAL;
}
}
int
svr4_sys_shmsys(struct lwp *l, const struct svr4_sys_shmsys_args *uap, register_t *retval)
{
DPRINTF(("svr4_shmsys(%d)\n", SCARG(uap, what)));
switch (SCARG(uap, what)) {
case SVR4_shmat:
return svr4_shmat(l, (const void *)uap, retval);
case SVR4_shmdt:
return svr4_shmdt(l, (const void *)uap, retval);
case SVR4_shmget:
return svr4_shmget(l, (const void *)uap, retval);
case SVR4_shmctl:
return svr4_shmctl(l, (const void *)uap, retval);
default:
return ENOSYS;
}
}
#endif /* SYSVSHM */