sys/compat/common/sysv_sem_50.c

   1 /*      $NetBSD: sysv_sem_50.c,v 1.1.2.2 2008/11/09 23:28:36 christos Exp $     */
   2
   3 /*-
   4  * Copyright (c) 1999 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
   9  * NASA Ames Research Center.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  * 3. All advertising materials mentioning features or use of this software
  20  *    must display the following acknowledgement:
  21  *      This product includes software developed by the NetBSD
  22  *      Foundation, Inc. and its contributors.
  23  * 4. Neither the name of The NetBSD Foundation nor the names of its
  24  *    contributors may be used to endorse or promote products derived
  25  *    from this software without specific prior written permission.
  26  *
  27  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  28  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  29  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  30  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  31  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  32  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  33  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  34  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  35  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  36  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  37  * POSSIBILITY OF SUCH DAMAGE.
  38  */
  39
  40 #include <sys/cdefs.h>
  41 __KERNEL_RCSID(0, "$NetBSD: sysv_sem_50.c,v 1.1.2.2 2008/11/09 23:28:36 christos Exp $");
  42
  43 #include <sys/param.h>
  44 #include <sys/systm.h>
  45 #include <sys/signal.h>
  46 #include <sys/proc.h>
  47 #include <sys/mount.h>
  48 #include <sys/sem.h>
  49
  50 #ifndef SYSVSEM
  51 #define SYSVSEM
  52 #endif
  53
  54 #include <sys/syscallargs.h>
  55
  56 #include <compat/sys/sem.h>
  57
  58 int
  59 compat_50_sys_____semctl13(struct lwp *l, const struct compat_50_sys_____semctl13_args *uap, register_t *retval)
  60 {
  61         /* {
  62                 syscallarg(int) semid;
  63                 syscallarg(int) semnum;
  64                 syscallarg(int) cmd;
  65                 syscallarg(union __semun *) arg;
  66         } */
  67         union __semun arg;
  68         struct semid_ds sembuf;
  69         struct semid_ds13 osembuf;
  70         int cmd, error;
  71         void *pass_arg;
  72
  73         cmd = SCARG(uap, cmd);
  74
  75         pass_arg = get_semctl_arg(cmd, &sembuf, &arg);
  76
  77         if (pass_arg != NULL) {
  78                 error = copyin(SCARG(uap, arg), &arg, sizeof(arg));
  79                 if (error)
  80                         return (error);
  81                 if (cmd == IPC_SET) {
  82                         error = copyin(arg.buf, &osembuf, sizeof(osembuf));
  83                         if (error)
  84                                 return (error);
  85                         __semid_ds13_to_native(&osembuf, &sembuf);
  86                 }
  87         }
  88
  89         error = semctl1(l, SCARG(uap, semid), SCARG(uap, semnum), cmd,
  90             pass_arg, retval);
  91
  92         if (error == 0 && cmd == IPC_STAT) {
  93                 __native_to_semid_ds13(&sembuf, &osembuf);
  94                 error = copyout(&osembuf, arg.buf, sizeof(osembuf));
  95         }
  96
  97         return (error);
  98 }