1 /* $NetBSD: sysv_sem_14.c,v 1.2 2000/06/02 15:53:04 simonb 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 static void semid_ds14_to_native __P((struct semid_ds14 *, struct semid_ds *)); 52 static void native_to_semid_ds14 __P((struct semid_ds *, struct semid_ds14 *)); 53 54 static void 55 semid_ds14_to_native(osembuf, sembuf) 56 struct semid_ds14 *osembuf; 57 struct semid_ds *sembuf; 58 { 59 60 ipc_perm14_to_native(&osembuf->sem_perm, &sembuf->sem_perm); 61 62 #define CVT(x) sembuf->x = osembuf->x 63 CVT(sem_nsems); 64 CVT(sem_otime); 65 CVT(sem_ctime); 66 #undef CVT 67 } 68 69 static void 70 native_to_semid_ds14(sembuf, osembuf) 71 struct semid_ds *sembuf; 72 struct semid_ds14 *osembuf; 73 { 74 75 native_to_ipc_perm14(&sembuf->sem_perm, &osembuf->sem_perm); 76 77 #define CVT(x) osembuf->x = sembuf->x 78 CVT(sem_nsems); 79 CVT(sem_otime); 80 CVT(sem_ctime); 81 #undef CVT 82 } 83 84 int 85 compat_14_sys___semctl(p, v, retval) 86 struct proc *p; 87 void *v; 88 register_t *retval; 89 { 90 struct compat_14_sys___semctl_args /* { 91 syscallarg(int) semid; 92 syscallarg(int) semnum; 93 syscallarg(int) cmd; 94 syscallarg(union __semun *) arg; 95 } */ *uap = v; 96 union __semun arg; 97 struct semid_ds sembuf; 98 struct semid_ds14 osembuf; 99 int cmd, error; 100 void *pass_arg = NULL; 101 102 cmd = SCARG(uap, cmd); 103 104 switch (cmd) { 105 case IPC_SET: 106 case IPC_STAT: 107 pass_arg = &sembuf; 108 break; 109 110 case GETALL: 111 case SETVAL: 112 case SETALL: 113 pass_arg = &arg; 114 break; 115 } 116 117 if (pass_arg != NULL) { 118 error = copyin(SCARG(uap, arg), &arg, sizeof(arg)); 119 if (error) 120 return (error); 121 if (cmd == IPC_SET) { 122 error = copyin(arg.buf, &osembuf, sizeof(osembuf)); 123 if (error) 124 return (error); 125 semid_ds14_to_native(&osembuf, &sembuf); 126 } 127 } 128 129 error = semctl1(p, SCARG(uap, semid), SCARG(uap, semnum), cmd, 130 pass_arg, retval); 131 132 if (error == 0 && cmd == IPC_STAT) { 133 native_to_semid_ds14(&sembuf, &osembuf); 134 error = copyout(&osembuf, arg.buf, sizeof(osembuf)); 135 } 136 137 return (error); 138 } 139