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/*-
* Copyright (c) 1994-1995 Søren Schmidt
* All rights reserved.
*
* 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
* in this position and unchanged.
* 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.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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>
__FBSDID("$FreeBSD: release/9.1.0/sys/compat/linux/linux_ipc.c 225617 2011-09-16 13:58:51Z kmacy $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/syscallsubr.h>
#include <sys/sysproto.h>
#include <sys/proc.h>
#include <sys/limits.h>
#include <sys/msg.h>
#include <sys/sem.h>
#include <sys/shm.h>
#include "opt_compat.h"
#ifdef COMPAT_LINUX32
#include <machine/../linux32/linux.h>
#include <machine/../linux32/linux32_proto.h>
#include <machine/../linux32/linux32_ipc64.h>
#else
#include <machine/../linux/linux.h>
#include <machine/../linux/linux_proto.h>
#include <machine/../linux/linux_ipc64.h>
#endif
#include <compat/linux/linux_ipc.h>
#include <compat/linux/linux_util.h>
struct l_seminfo {
l_int semmap;
l_int semmni;
l_int semmns;
l_int semmnu;
l_int semmsl;
l_int semopm;
l_int semume;
l_int semusz;
l_int semvmx;
l_int semaem;
};
struct l_shminfo {
l_int shmmax;
l_int shmmin;
l_int shmmni;
l_int shmseg;
l_int shmall;
};
struct l_shm_info {
l_int used_ids;
l_ulong shm_tot; /* total allocated shm */
l_ulong shm_rss; /* total resident shm */
l_ulong shm_swp; /* total swapped shm */
l_ulong swap_attempts;
l_ulong swap_successes;
};
struct l_msginfo {
l_int msgpool;
l_int msgmap;
l_int msgmax;
l_int msgmnb;
l_int msgmni;
l_int msgssz;
l_int msgtql;
l_ushort msgseg;
};
static void
bsd_to_linux_shminfo( struct shminfo *bpp, struct l_shminfo *lpp)
{
lpp->shmmax = bpp->shmmax;
lpp->shmmin = bpp->shmmin;
lpp->shmmni = bpp->shmmni;
lpp->shmseg = bpp->shmseg;
lpp->shmall = bpp->shmall;
}
static void
bsd_to_linux_shm_info( struct shm_info *bpp, struct l_shm_info *lpp)
{
lpp->used_ids = bpp->used_ids ;
lpp->shm_tot = bpp->shm_tot ;
lpp->shm_rss = bpp->shm_rss ;
lpp->shm_swp = bpp->shm_swp ;
lpp->swap_attempts = bpp->swap_attempts ;
lpp->swap_successes = bpp->swap_successes ;
}
struct l_ipc_perm {
l_key_t key;
l_uid16_t uid;
l_gid16_t gid;
l_uid16_t cuid;
l_gid16_t cgid;
l_ushort mode;
l_ushort seq;
};
static void
linux_to_bsd_ipc_perm(struct l_ipc_perm *lpp, struct ipc_perm *bpp)
{
bpp->key = lpp->key;
bpp->uid = lpp->uid;
bpp->gid = lpp->gid;
bpp->cuid = lpp->cuid;
bpp->cgid = lpp->cgid;
bpp->mode = lpp->mode;
bpp->seq = lpp->seq;
}
static void
bsd_to_linux_ipc_perm(struct ipc_perm *bpp, struct l_ipc_perm *lpp)
{
lpp->key = bpp->key;
lpp->uid = bpp->uid;
lpp->gid = bpp->gid;
lpp->cuid = bpp->cuid;
lpp->cgid = bpp->cgid;
lpp->mode = bpp->mode;
lpp->seq = bpp->seq;
}
struct l_msqid_ds {
struct l_ipc_perm msg_perm;
l_uintptr_t msg_first; /* first message on queue,unused */
l_uintptr_t msg_last; /* last message in queue,unused */
l_time_t msg_stime; /* last msgsnd time */
l_time_t msg_rtime; /* last msgrcv time */
l_time_t msg_ctime; /* last change time */
l_ulong msg_lcbytes; /* Reuse junk fields for 32 bit */
l_ulong msg_lqbytes; /* ditto */
l_ushort msg_cbytes; /* current number of bytes on queue */
l_ushort msg_qnum; /* number of messages in queue */
l_ushort msg_qbytes; /* max number of bytes on queue */
l_pid_t msg_lspid; /* pid of last msgsnd */
l_pid_t msg_lrpid; /* last receive pid */
}
#if defined(__amd64__) && defined(COMPAT_LINUX32)
__packed
#endif
;
struct l_semid_ds {
struct l_ipc_perm sem_perm;
l_time_t sem_otime;
l_time_t sem_ctime;
l_uintptr_t sem_base;
l_uintptr_t sem_pending;
l_uintptr_t sem_pending_last;
l_uintptr_t undo;
l_ushort sem_nsems;
}
#if defined(__amd64__) && defined(COMPAT_LINUX32)
__packed
#endif
;
struct l_shmid_ds {
struct l_ipc_perm shm_perm;
l_int shm_segsz;
l_time_t shm_atime;
l_time_t shm_dtime;
l_time_t shm_ctime;
l_ushort shm_cpid;
l_ushort shm_lpid;
l_short shm_nattch;
l_ushort private1;
l_uintptr_t private2;
l_uintptr_t private3;
};
static void
linux_to_bsd_semid_ds(struct l_semid_ds *lsp, struct semid_ds *bsp)
{
linux_to_bsd_ipc_perm(&lsp->sem_perm, &bsp->sem_perm);
bsp->sem_otime = lsp->sem_otime;
bsp->sem_ctime = lsp->sem_ctime;
bsp->sem_nsems = lsp->sem_nsems;
bsp->sem_base = PTRIN(lsp->sem_base);
}
static void
bsd_to_linux_semid_ds(struct semid_ds *bsp, struct l_semid_ds *lsp)
{
bsd_to_linux_ipc_perm(&bsp->sem_perm, &lsp->sem_perm);
lsp->sem_otime = bsp->sem_otime;
lsp->sem_ctime = bsp->sem_ctime;
lsp->sem_nsems = bsp->sem_nsems;
lsp->sem_base = PTROUT(bsp->sem_base);
}
static void
linux_to_bsd_shmid_ds(struct l_shmid_ds *lsp, struct shmid_ds *bsp)
{
linux_to_bsd_ipc_perm(&lsp->shm_perm, &bsp->shm_perm);
bsp->shm_segsz = lsp->shm_segsz;
bsp->shm_lpid = lsp->shm_lpid;
bsp->shm_cpid = lsp->shm_cpid;
bsp->shm_nattch = lsp->shm_nattch;
bsp->shm_atime = lsp->shm_atime;
bsp->shm_dtime = lsp->shm_dtime;
bsp->shm_ctime = lsp->shm_ctime;
}
static void
bsd_to_linux_shmid_ds(struct shmid_ds *bsp, struct l_shmid_ds *lsp)
{
bsd_to_linux_ipc_perm(&bsp->shm_perm, &lsp->shm_perm);
if (bsp->shm_segsz > INT_MAX)
lsp->shm_segsz = INT_MAX;
else
lsp->shm_segsz = bsp->shm_segsz;
lsp->shm_lpid = bsp->shm_lpid;
lsp->shm_cpid = bsp->shm_cpid;
if (bsp->shm_nattch > SHRT_MAX)
lsp->shm_nattch = SHRT_MAX;
else
lsp->shm_nattch = bsp->shm_nattch;
lsp->shm_atime = bsp->shm_atime;
lsp->shm_dtime = bsp->shm_dtime;
lsp->shm_ctime = bsp->shm_ctime;
lsp->private3 = 0;
}
static void
linux_to_bsd_msqid_ds(struct l_msqid_ds *lsp, struct msqid_ds *bsp)
{
linux_to_bsd_ipc_perm(&lsp->msg_perm, &bsp->msg_perm);
bsp->msg_cbytes = lsp->msg_cbytes;
bsp->msg_qnum = lsp->msg_qnum;
bsp->msg_qbytes = lsp->msg_qbytes;
bsp->msg_lspid = lsp->msg_lspid;
bsp->msg_lrpid = lsp->msg_lrpid;
bsp->msg_stime = lsp->msg_stime;
bsp->msg_rtime = lsp->msg_rtime;
bsp->msg_ctime = lsp->msg_ctime;
}
static void
bsd_to_linux_msqid_ds(struct msqid_ds *bsp, struct l_msqid_ds *lsp)
{
bsd_to_linux_ipc_perm(&bsp->msg_perm, &lsp->msg_perm);
lsp->msg_cbytes = bsp->msg_cbytes;
lsp->msg_qnum = bsp->msg_qnum;
lsp->msg_qbytes = bsp->msg_qbytes;
lsp->msg_lspid = bsp->msg_lspid;
lsp->msg_lrpid = bsp->msg_lrpid;
lsp->msg_stime = bsp->msg_stime;
lsp->msg_rtime = bsp->msg_rtime;
lsp->msg_ctime = bsp->msg_ctime;
}
static void
linux_ipc_perm_to_ipc64_perm(struct l_ipc_perm *in, struct l_ipc64_perm *out)
{
/* XXX: do we really need to do something here? */
out->key = in->key;
out->uid = in->uid;
out->gid = in->gid;
out->cuid = in->cuid;
out->cgid = in->cgid;
out->mode = in->mode;
out->seq = in->seq;
}
static int
linux_msqid_pullup(l_int ver, struct l_msqid_ds *linux_msqid, caddr_t uaddr)
{
struct l_msqid64_ds linux_msqid64;
int error;
if (ver == LINUX_IPC_64) {
error = copyin(uaddr, &linux_msqid64, sizeof(linux_msqid64));
if (error != 0)
return (error);
bzero(linux_msqid, sizeof(*linux_msqid));
linux_msqid->msg_perm.uid = linux_msqid64.msg_perm.uid;
linux_msqid->msg_perm.gid = linux_msqid64.msg_perm.gid;
linux_msqid->msg_perm.mode = linux_msqid64.msg_perm.mode;
if (linux_msqid64.msg_qbytes > USHRT_MAX)
linux_msqid->msg_lqbytes = linux_msqid64.msg_qbytes;
else
linux_msqid->msg_qbytes = linux_msqid64.msg_qbytes;
} else
error = copyin(uaddr, linux_msqid, sizeof(*linux_msqid));
return (error);
}
static int
linux_msqid_pushdown(l_int ver, struct l_msqid_ds *linux_msqid, caddr_t uaddr)
{
struct l_msqid64_ds linux_msqid64;
if (ver == LINUX_IPC_64) {
bzero(&linux_msqid64, sizeof(linux_msqid64));
linux_ipc_perm_to_ipc64_perm(&linux_msqid->msg_perm,
&linux_msqid64.msg_perm);
linux_msqid64.msg_stime = linux_msqid->msg_stime;
linux_msqid64.msg_rtime = linux_msqid->msg_rtime;
linux_msqid64.msg_ctime = linux_msqid->msg_ctime;
if (linux_msqid->msg_cbytes == 0)
linux_msqid64.msg_cbytes = linux_msqid->msg_lcbytes;
else
linux_msqid64.msg_cbytes = linux_msqid->msg_cbytes;
linux_msqid64.msg_qnum = linux_msqid->msg_qnum;
if (linux_msqid->msg_qbytes == 0)
linux_msqid64.msg_qbytes = linux_msqid->msg_lqbytes;
else
linux_msqid64.msg_qbytes = linux_msqid->msg_qbytes;
linux_msqid64.msg_lspid = linux_msqid->msg_lspid;
linux_msqid64.msg_lrpid = linux_msqid->msg_lrpid;
return (copyout(&linux_msqid64, uaddr, sizeof(linux_msqid64)));
} else
return (copyout(linux_msqid, uaddr, sizeof(*linux_msqid)));
}
static int
linux_semid_pullup(l_int ver, struct l_semid_ds *linux_semid, caddr_t uaddr)
{
struct l_semid64_ds linux_semid64;
int error;
if (ver == LINUX_IPC_64) {
error = copyin(uaddr, &linux_semid64, sizeof(linux_semid64));
if (error != 0)
return (error);
bzero(linux_semid, sizeof(*linux_semid));
linux_semid->sem_perm.uid = linux_semid64.sem_perm.uid;
linux_semid->sem_perm.gid = linux_semid64.sem_perm.gid;
linux_semid->sem_perm.mode = linux_semid64.sem_perm.mode;
} else
error = copyin(uaddr, linux_semid, sizeof(*linux_semid));
return (error);
}
static int
linux_semid_pushdown(l_int ver, struct l_semid_ds *linux_semid, caddr_t uaddr)
{
struct l_semid64_ds linux_semid64;
if (ver == LINUX_IPC_64) {
bzero(&linux_semid64, sizeof(linux_semid64));
linux_ipc_perm_to_ipc64_perm(&linux_semid->sem_perm,
&linux_semid64.sem_perm);
linux_semid64.sem_otime = linux_semid->sem_otime;
linux_semid64.sem_ctime = linux_semid->sem_ctime;
linux_semid64.sem_nsems = linux_semid->sem_nsems;
return (copyout(&linux_semid64, uaddr, sizeof(linux_semid64)));
} else
return (copyout(linux_semid, uaddr, sizeof(*linux_semid)));
}
static int
linux_shmid_pullup(l_int ver, struct l_shmid_ds *linux_shmid, caddr_t uaddr)
{
struct l_shmid64_ds linux_shmid64;
int error;
if (ver == LINUX_IPC_64) {
error = copyin(uaddr, &linux_shmid64, sizeof(linux_shmid64));
if (error != 0)
return (error);
bzero(linux_shmid, sizeof(*linux_shmid));
linux_shmid->shm_perm.uid = linux_shmid64.shm_perm.uid;
linux_shmid->shm_perm.gid = linux_shmid64.shm_perm.gid;
linux_shmid->shm_perm.mode = linux_shmid64.shm_perm.mode;
} else
error = copyin(uaddr, linux_shmid, sizeof(*linux_shmid));
return (error);
}
static int
linux_shmid_pushdown(l_int ver, struct l_shmid_ds *linux_shmid, caddr_t uaddr)
{
struct l_shmid64_ds linux_shmid64;
/*
* XXX: This is backwards and loses information in shm_nattch
* and shm_segsz. We should probably either expose the BSD
* shmid structure directly and convert it to either the
* non-64 or 64 variant directly or the code should always
* convert to the 64 variant and then truncate values into the
* non-64 variant if needed since the 64 variant has more
* precision.
*/
if (ver == LINUX_IPC_64) {
bzero(&linux_shmid64, sizeof(linux_shmid64));
linux_ipc_perm_to_ipc64_perm(&linux_shmid->shm_perm,
&linux_shmid64.shm_perm);
linux_shmid64.shm_segsz = linux_shmid->shm_segsz;
linux_shmid64.shm_atime = linux_shmid->shm_atime;
linux_shmid64.shm_dtime = linux_shmid->shm_dtime;
linux_shmid64.shm_ctime = linux_shmid->shm_ctime;
linux_shmid64.shm_cpid = linux_shmid->shm_cpid;
linux_shmid64.shm_lpid = linux_shmid->shm_lpid;
linux_shmid64.shm_nattch = linux_shmid->shm_nattch;
return (copyout(&linux_shmid64, uaddr, sizeof(linux_shmid64)));
} else
return (copyout(linux_shmid, uaddr, sizeof(*linux_shmid)));
}
static int
linux_shminfo_pushdown(l_int ver, struct l_shminfo *linux_shminfo,
caddr_t uaddr)
{
struct l_shminfo64 linux_shminfo64;
if (ver == LINUX_IPC_64) {
bzero(&linux_shminfo64, sizeof(linux_shminfo64));
linux_shminfo64.shmmax = linux_shminfo->shmmax;
linux_shminfo64.shmmin = linux_shminfo->shmmin;
linux_shminfo64.shmmni = linux_shminfo->shmmni;
linux_shminfo64.shmseg = linux_shminfo->shmseg;
linux_shminfo64.shmall = linux_shminfo->shmall;
return (copyout(&linux_shminfo64, uaddr,
sizeof(linux_shminfo64)));
} else
return (copyout(linux_shminfo, uaddr, sizeof(*linux_shminfo)));
}
int
linux_semop(struct thread *td, struct linux_semop_args *args)
{
struct semop_args /* {
int semid;
struct sembuf *sops;
int nsops;
} */ bsd_args;
bsd_args.semid = args->semid;
bsd_args.sops = PTRIN(args->tsops);
bsd_args.nsops = args->nsops;
return (sys_semop(td, &bsd_args));
}
int
linux_semget(struct thread *td, struct linux_semget_args *args)
{
struct semget_args /* {
key_t key;
int nsems;
int semflg;
} */ bsd_args;
if (args->nsems < 0)
return (EINVAL);
bsd_args.key = args->key;
bsd_args.nsems = args->nsems;
bsd_args.semflg = args->semflg;
return (sys_semget(td, &bsd_args));
}
int
linux_semctl(struct thread *td, struct linux_semctl_args *args)
{
struct l_semid_ds linux_semid;
struct l_seminfo linux_seminfo;
struct semid_ds semid;
union semun semun;
register_t rval;
int cmd, error;
switch (args->cmd & ~LINUX_IPC_64) {
case LINUX_IPC_RMID:
cmd = IPC_RMID;
break;
case LINUX_GETNCNT:
cmd = GETNCNT;
break;
case LINUX_GETPID:
cmd = GETPID;
break;
case LINUX_GETVAL:
cmd = GETVAL;
break;
case LINUX_GETZCNT:
cmd = GETZCNT;
break;
case LINUX_SETVAL:
cmd = SETVAL;
semun.val = args->arg.val;
break;
case LINUX_IPC_SET:
cmd = IPC_SET;
error = linux_semid_pullup(args->cmd & LINUX_IPC_64,
&linux_semid, PTRIN(args->arg.buf));
if (error)
return (error);
linux_to_bsd_semid_ds(&linux_semid, &semid);
semun.buf = &semid;
return (kern_semctl(td, args->semid, args->semnum, cmd, &semun,
td->td_retval));
case LINUX_IPC_STAT:
case LINUX_SEM_STAT:
if ((args->cmd & ~LINUX_IPC_64) == LINUX_IPC_STAT)
cmd = IPC_STAT;
else
cmd = SEM_STAT;
semun.buf = &semid;
error = kern_semctl(td, args->semid, args->semnum, cmd, &semun,
&rval);
if (error)
return (error);
bsd_to_linux_semid_ds(&semid, &linux_semid);
error = linux_semid_pushdown(args->cmd & LINUX_IPC_64,
&linux_semid, PTRIN(args->arg.buf));
if (error == 0)
td->td_retval[0] = (cmd == SEM_STAT) ? rval : 0;
return (error);
case LINUX_IPC_INFO:
case LINUX_SEM_INFO:
bcopy(&seminfo, &linux_seminfo.semmni, sizeof(linux_seminfo) -
sizeof(linux_seminfo.semmap) );
/*
* Linux does not use the semmap field but populates it with
* the defined value from SEMMAP, which really is redefined to
* SEMMNS, which they define as SEMMNI * SEMMSL. Try to
* simulate this returning our dynamic semmns value.
*/
linux_seminfo.semmap = linux_seminfo.semmns;
/* XXX BSD equivalent?
#define used_semids 10
#define used_sems 10
linux_seminfo.semusz = used_semids;
linux_seminfo.semaem = used_sems;
*/
error = copyout(&linux_seminfo,
PTRIN(args->arg.buf), sizeof(linux_seminfo));
if (error)
return (error);
td->td_retval[0] = seminfo.semmni;
return (0); /* No need for __semctl call */
case LINUX_GETALL:
cmd = GETALL;
semun.val = args->arg.val;
break;
case LINUX_SETALL:
cmd = SETALL;
semun.val = args->arg.val;
break;
default:
linux_msg(td, "ipc type %d is not implemented",
args->cmd & ~LINUX_IPC_64);
return (EINVAL);
}
return (kern_semctl(td, args->semid, args->semnum, cmd, &semun,
td->td_retval));
}
int
linux_msgsnd(struct thread *td, struct linux_msgsnd_args *args)
{
const void *msgp;
long mtype;
l_long lmtype;
int error;
if ((l_long)args->msgsz < 0 || args->msgsz > (l_long)msginfo.msgmax)
return (EINVAL);
msgp = PTRIN(args->msgp);
if ((error = copyin(msgp, &lmtype, sizeof(lmtype))) != 0)
return (error);
mtype = (long)lmtype;
return (kern_msgsnd(td, args->msqid,
(const char *)msgp + sizeof(lmtype),
args->msgsz, args->msgflg, mtype));
}
int
linux_msgrcv(struct thread *td, struct linux_msgrcv_args *args)
{
void *msgp;
long mtype;
l_long lmtype;
int error;
if ((l_long)args->msgsz < 0 || args->msgsz > (l_long)msginfo.msgmax)
return (EINVAL);
msgp = PTRIN(args->msgp);
if ((error = kern_msgrcv(td, args->msqid,
(char *)msgp + sizeof(lmtype), args->msgsz,
args->msgtyp, args->msgflg, &mtype)) != 0)
return (error);
lmtype = (l_long)mtype;
return (copyout(&lmtype, msgp, sizeof(lmtype)));
}
int
linux_msgget(struct thread *td, struct linux_msgget_args *args)
{
struct msgget_args /* {
key_t key;
int msgflg;
} */ bsd_args;
bsd_args.key = args->key;
bsd_args.msgflg = args->msgflg;
return (sys_msgget(td, &bsd_args));
}
int
linux_msgctl(struct thread *td, struct linux_msgctl_args *args)
{
int error, bsd_cmd;
struct l_msqid_ds linux_msqid;
struct msqid_ds bsd_msqid;
bsd_cmd = args->cmd & ~LINUX_IPC_64;
switch (bsd_cmd) {
case LINUX_IPC_INFO:
case LINUX_MSG_INFO: {
struct l_msginfo linux_msginfo;
/*
* XXX MSG_INFO uses the same data structure but returns different
* dynamic counters in msgpool, msgmap, and msgtql fields.
*/
linux_msginfo.msgpool = (long)msginfo.msgmni *
(long)msginfo.msgmnb / 1024L; /* XXX MSG_INFO. */
linux_msginfo.msgmap = msginfo.msgmnb; /* XXX MSG_INFO. */
linux_msginfo.msgmax = msginfo.msgmax;
linux_msginfo.msgmnb = msginfo.msgmnb;
linux_msginfo.msgmni = msginfo.msgmni;
linux_msginfo.msgssz = msginfo.msgssz;
linux_msginfo.msgtql = msginfo.msgtql; /* XXX MSG_INFO. */
linux_msginfo.msgseg = msginfo.msgseg;
error = copyout(&linux_msginfo, PTRIN(args->buf),
sizeof(linux_msginfo));
if (error == 0)
td->td_retval[0] = msginfo.msgmni; /* XXX */
return (error);
}
/*
* TODO: implement this
* case LINUX_MSG_STAT:
*/
case LINUX_IPC_STAT:
/* NOTHING */
break;
case LINUX_IPC_SET:
error = linux_msqid_pullup(args->cmd & LINUX_IPC_64,
&linux_msqid, PTRIN(args->buf));
if (error)
return (error);
linux_to_bsd_msqid_ds(&linux_msqid, &bsd_msqid);
break;
case LINUX_IPC_RMID:
/* NOTHING */
break;
default:
return (EINVAL);
break;
}
error = kern_msgctl(td, args->msqid, bsd_cmd, &bsd_msqid);
if (error != 0)
if (bsd_cmd != LINUX_IPC_RMID || error != EINVAL)
return (error);
if (bsd_cmd == LINUX_IPC_STAT) {
bsd_to_linux_msqid_ds(&bsd_msqid, &linux_msqid);
return (linux_msqid_pushdown(args->cmd & LINUX_IPC_64,
&linux_msqid, PTRIN(args->buf)));
}
return (0);
}
int
linux_shmat(struct thread *td, struct linux_shmat_args *args)
{
struct shmat_args /* {
int shmid;
void *shmaddr;
int shmflg;
} */ bsd_args;
int error;
#if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
l_uintptr_t addr;
#endif
bsd_args.shmid = args->shmid;
bsd_args.shmaddr = PTRIN(args->shmaddr);
bsd_args.shmflg = args->shmflg;
if ((error = sys_shmat(td, &bsd_args)))
return (error);
#if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
addr = td->td_retval[0];
if ((error = copyout(&addr, PTRIN(args->raddr), sizeof(addr))))
return (error);
td->td_retval[0] = 0;
#endif
return (0);
}
int
linux_shmdt(struct thread *td, struct linux_shmdt_args *args)
{
struct shmdt_args /* {
void *shmaddr;
} */ bsd_args;
bsd_args.shmaddr = PTRIN(args->shmaddr);
return (sys_shmdt(td, &bsd_args));
}
int
linux_shmget(struct thread *td, struct linux_shmget_args *args)
{
struct shmget_args /* {
key_t key;
int size;
int shmflg;
} */ bsd_args;
bsd_args.key = args->key;
bsd_args.size = args->size;
bsd_args.shmflg = args->shmflg;
return (sys_shmget(td, &bsd_args));
}
int
linux_shmctl(struct thread *td, struct linux_shmctl_args *args)
{
struct l_shmid_ds linux_shmid;
struct l_shminfo linux_shminfo;
struct l_shm_info linux_shm_info;
struct shmid_ds bsd_shmid;
int error;
switch (args->cmd & ~LINUX_IPC_64) {
case LINUX_IPC_INFO: {
struct shminfo bsd_shminfo;
/* Perform shmctl wanting removed segments lookup */
error = kern_shmctl(td, args->shmid, IPC_INFO,
(void *)&bsd_shminfo, NULL);
if (error)
return (error);
bsd_to_linux_shminfo(&bsd_shminfo, &linux_shminfo);
return (linux_shminfo_pushdown(args->cmd & LINUX_IPC_64,
&linux_shminfo, PTRIN(args->buf)));
}
case LINUX_SHM_INFO: {
struct shm_info bsd_shm_info;
/* Perform shmctl wanting removed segments lookup */
error = kern_shmctl(td, args->shmid, SHM_INFO,
(void *)&bsd_shm_info, NULL);
if (error)
return (error);
bsd_to_linux_shm_info(&bsd_shm_info, &linux_shm_info);
return (copyout(&linux_shm_info, PTRIN(args->buf),
sizeof(struct l_shm_info)));
}
case LINUX_IPC_STAT:
/* Perform shmctl wanting removed segments lookup */
error = kern_shmctl(td, args->shmid, IPC_STAT,
(void *)&bsd_shmid, NULL);
if (error)
return (error);
bsd_to_linux_shmid_ds(&bsd_shmid, &linux_shmid);
return (linux_shmid_pushdown(args->cmd & LINUX_IPC_64,
&linux_shmid, PTRIN(args->buf)));
case LINUX_SHM_STAT:
/* Perform shmctl wanting removed segments lookup */
error = kern_shmctl(td, args->shmid, IPC_STAT,
(void *)&bsd_shmid, NULL);
if (error)
return (error);
bsd_to_linux_shmid_ds(&bsd_shmid, &linux_shmid);
return (linux_shmid_pushdown(args->cmd & LINUX_IPC_64,
&linux_shmid, PTRIN(args->buf)));
case LINUX_IPC_SET:
error = linux_shmid_pullup(args->cmd & LINUX_IPC_64,
&linux_shmid, PTRIN(args->buf));
if (error)
return (error);
linux_to_bsd_shmid_ds(&linux_shmid, &bsd_shmid);
/* Perform shmctl wanting removed segments lookup */
return (kern_shmctl(td, args->shmid, IPC_SET,
(void *)&bsd_shmid, NULL));
case LINUX_IPC_RMID: {
void *buf;
if (args->buf == 0)
buf = NULL;
else {
error = linux_shmid_pullup(args->cmd & LINUX_IPC_64,
&linux_shmid, PTRIN(args->buf));
if (error)
return (error);
linux_to_bsd_shmid_ds(&linux_shmid, &bsd_shmid);
buf = (void *)&bsd_shmid;
}
return (kern_shmctl(td, args->shmid, IPC_RMID, buf, NULL));
}
case LINUX_SHM_LOCK:
/* FALLTHROUGH */
case LINUX_SHM_UNLOCK:
/* FALLTHROUGH */
default:
linux_msg(td, "ipc type %d not implemented",
args->cmd & ~LINUX_IPC_64);
return (EINVAL);
}
}
MODULE_DEPEND(linux, sysvmsg, 1, 1, 1);
MODULE_DEPEND(linux, sysvsem, 1, 1, 1);
MODULE_DEPEND(linux, sysvshm, 1, 1, 1);