1 /* $NetBSD: sysv_shm_14.c,v 1.13 2007/12/08 18:35:55 dsl 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 1.13 2007/12/08 18:35:55 dsl 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/syscallargs.h> 55 56 #include <compat/sys/shm.h> 57 58 static void shmid_ds14_to_native(struct shmid_ds14 *, struct shmid_ds *); 59 static void native_to_shmid_ds14(struct shmid_ds *, struct shmid_ds14 *); 60 61 static void 62 shmid_ds14_to_native(struct shmid_ds14 *oshmbuf, struct shmid_ds *shmbuf) 63 { 64 65 ipc_perm14_to_native(&oshmbuf->shm_perm, &shmbuf->shm_perm); 66 67 #define CVT(x) shmbuf->x = oshmbuf->x 68 CVT(shm_segsz); 69 CVT(shm_lpid); 70 CVT(shm_cpid); 71 CVT(shm_nattch); 72 CVT(shm_atime); 73 CVT(shm_dtime); 74 CVT(shm_ctime); 75 #undef CVT 76 } 77 78 static void 79 native_to_shmid_ds14(struct shmid_ds *shmbuf, struct shmid_ds14 *oshmbuf) 80 { 81 82 native_to_ipc_perm14(&shmbuf->shm_perm, &oshmbuf->shm_perm); 83 84 #define CVT(x) oshmbuf->x = shmbuf->x 85 CVT(shm_segsz); 86 CVT(shm_lpid); 87 CVT(shm_cpid); 88 CVT(shm_nattch); 89 CVT(shm_atime); 90 CVT(shm_dtime); 91 CVT(shm_ctime); 92 #undef CVT 93 } 94 95 int 96 compat_14_sys_shmctl(struct lwp *l, void *v, register_t *retval) 97 { 98 struct compat_14_sys_shmctl_args /* { 99 syscallarg(int) shmid; 100 syscallarg(int) cmd; 101 syscallarg(struct shmid_ds14 *) buf; 102 } */ *uap = v; 103 struct shmid_ds shmbuf; 104 struct shmid_ds14 oshmbuf; 105 int cmd, error; 106 107 cmd = SCARG(uap, cmd); 108 109 if (cmd == IPC_SET) { 110 error = copyin(SCARG(uap, buf), &oshmbuf, sizeof(oshmbuf)); 111 if (error) 112 return (error); 113 shmid_ds14_to_native(&oshmbuf, &shmbuf); 114 } 115 116 error = shmctl1(l, SCARG(uap, shmid), cmd, 117 (cmd == IPC_SET || cmd == IPC_STAT) ? &shmbuf : NULL); 118 119 if (error == 0 && cmd == IPC_STAT) { 120 native_to_shmid_ds14(&shmbuf, &oshmbuf); 121 error = copyout(&oshmbuf, SCARG(uap, buf), sizeof(oshmbuf)); 122 } 123 124 return (error); 125 } 126