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-rw-r--r--sys/compat/linux/linux_ipc.c899
1 files changed, 899 insertions, 0 deletions
diff --git a/sys/compat/linux/linux_ipc.c b/sys/compat/linux/linux_ipc.c
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--- /dev/null
+++ b/sys/compat/linux/linux_ipc.c
@@ -0,0 +1,899 @@
+/*-
+ * 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("$FreeBSD$");
+
+#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);
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