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sysv_sem_14.c revision 1.1 
      1 /*	$NetBSD: sysv_sem_14.c,v 1.1 1999/08/25 04:47:12 thorpej 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/param.h>
     41 #include <sys/systm.h>
     42 #include <sys/signal.h>
     43 #include <sys/proc.h>
     44 #include <sys/mount.h>
     45 #include <sys/sem.h>
     46 
     47 #define	SYSVSEM
     48 
     49 #include <sys/syscallargs.h>
     50 
     51 void
     52 semid_ds14_to_native(osembuf, sembuf)
     53 	struct semid_ds14 *osembuf;
     54 	struct semid_ds *sembuf;
     55 {
     56 
     57 	ipc_perm14_to_native(&osembuf->sem_perm, &sembuf->sem_perm);
     58 
     59 #define	CVT(x)	sembuf->x = osembuf->x
     60 	CVT(sem_nsems);
     61 	CVT(sem_otime);
     62 	CVT(sem_ctime);
     63 #undef CVT
     64 }
     65 
     66 void
     67 native_to_semid_ds14(sembuf, osembuf)
     68 	struct semid_ds *sembuf;
     69 	struct semid_ds14 *osembuf;
     70 {
     71 
     72 	native_to_ipc_perm14(&sembuf->sem_perm, &osembuf->sem_perm);
     73 
     74 #define	CVT(x)	osembuf->x = sembuf->x
     75 	CVT(sem_nsems);
     76 	CVT(sem_otime);
     77 	CVT(sem_ctime);
     78 #undef CVT
     79 }
     80 
     81 int
     82 compat_14_sys___semctl(p, v, retval)
     83 	struct proc *p;
     84 	void *v;
     85 	register_t *retval;
     86 {
     87 	struct compat_14_sys___semctl_args /* {
     88 		syscallarg(int) semid;
     89 		syscallarg(int) semnum;
     90 		syscallarg(int) cmd;
     91 		syscallarg(union __semun *) arg;
     92 	} */ *uap = v;
     93 	union __semun arg;
     94 	struct semid_ds sembuf;
     95 	struct semid_ds14 osembuf;
     96 	int cmd, error;
     97 	void *pass_arg = NULL;
     98 
     99 	cmd = SCARG(uap, cmd);
    100 
    101 	switch (cmd) {
    102 	case IPC_SET:
    103 	case IPC_STAT:
    104 		pass_arg = &sembuf;
    105 		break;
    106 
    107 	case GETALL:
    108 	case SETVAL:
    109 	case SETALL:
    110 		pass_arg = &arg;
    111 		break;
    112 	}
    113 
    114 	if (pass_arg != NULL) {
    115 		error = copyin(SCARG(uap, arg), &arg, sizeof(arg));
    116 		if (error)
    117 			return (error);
    118 		if (cmd == IPC_SET) {
    119 			error = copyin(arg.buf, &osembuf, sizeof(osembuf));
    120 			if (error)
    121 				return (error);
    122 			semid_ds14_to_native(&osembuf, &sembuf);
    123 		}
    124 	}
    125 
    126 	error = semctl1(p, SCARG(uap, semid), SCARG(uap, semnum), cmd,
    127 	    pass_arg, retval);
    128 
    129 	if (error == 0 && cmd == IPC_STAT) {
    130 		native_to_semid_ds14(&sembuf, &osembuf);
    131 		error = copyout(&osembuf, arg.buf, sizeof(osembuf));
    132 	}
    133 
    134 	return (error);
    135 }
    136