1 /* $NetBSD: sysv_shm_14.c,v 1.7 2005/11/10 18:39:30 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_shm_14.c,v 1.7 2005/11/10 18:39:30 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/shm.h> 49 50 #ifndef SYSVSHM 51 #define SYSVSHM 52 #endif 53 54 #include <sys/sa.h> 55 #include <sys/syscallargs.h> 56 57 #include <compat/sys/shm.h> 58 59 static void shmid_ds14_to_native __P((struct shmid_ds14 *, struct shmid_ds *)); 60 static void native_to_shmid_ds14 __P((struct shmid_ds *, struct shmid_ds14 *)); 61 62 static void 63 shmid_ds14_to_native(oshmbuf, shmbuf) 64 struct shmid_ds14 *oshmbuf; 65 struct shmid_ds *shmbuf; 66 { 67 68 ipc_perm14_to_native(&oshmbuf->shm_perm, &shmbuf->shm_perm); 69 70 #define CVT(x) shmbuf->x = oshmbuf->x 71 CVT(shm_segsz); 72 CVT(shm_lpid); 73 CVT(shm_cpid); 74 CVT(shm_nattch); 75 CVT(shm_atime); 76 CVT(shm_dtime); 77 CVT(shm_ctime); 78 #undef CVT 79 } 80 81 static void 82 native_to_shmid_ds14(shmbuf, oshmbuf) 83 struct shmid_ds *shmbuf; 84 struct shmid_ds14 *oshmbuf; 85 { 86 87 native_to_ipc_perm14(&shmbuf->shm_perm, &oshmbuf->shm_perm); 88 89 #define CVT(x) oshmbuf->x = shmbuf->x 90 CVT(shm_segsz); 91 CVT(shm_lpid); 92 CVT(shm_cpid); 93 CVT(shm_nattch); 94 CVT(shm_atime); 95 CVT(shm_dtime); 96 CVT(shm_ctime); 97 #undef CVT 98 } 99 100 int 101 compat_14_sys_shmctl(struct lwp *l, void *v, register_t *retval) 102 { 103 struct compat_14_sys_shmctl_args /* { 104 syscallarg(int) shmid; 105 syscallarg(int) cmd; 106 syscallarg(struct shmid_ds14 *) buf; 107 } */ *uap = v; 108 struct proc *p = l->l_proc; 109 struct shmid_ds shmbuf; 110 struct shmid_ds14 oshmbuf; 111 int cmd, error; 112 113 cmd = SCARG(uap, cmd); 114 115 if (cmd == IPC_SET) { 116 error = copyin(SCARG(uap, buf), &oshmbuf, sizeof(oshmbuf)); 117 if (error) 118 return (error); 119 shmid_ds14_to_native(&oshmbuf, &shmbuf); 120 } 121 122 error = shmctl1(p, SCARG(uap, shmid), cmd, 123 (cmd == IPC_SET || cmd == IPC_STAT) ? &shmbuf : NULL); 124 125 if (error == 0 && cmd == IPC_STAT) { 126 native_to_shmid_ds14(&shmbuf, &oshmbuf); 127 error = copyout(&oshmbuf, SCARG(uap, buf), sizeof(oshmbuf)); 128 } 129 130 return (error); 131 } 132