1 /* $NetBSD: sysv_shm_14.c,v 1.15 2008/04/28 20:23:41 martin 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 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #include <sys/cdefs.h> 34 __KERNEL_RCSID(0, "$NetBSD: sysv_shm_14.c,v 1.15 2008/04/28 20:23:41 martin Exp $"); 35 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/signal.h> 39 #include <sys/proc.h> 40 #include <sys/mount.h> 41 #include <sys/shm.h> 42 43 #ifndef SYSVSHM 44 #define SYSVSHM 45 #endif 46 47 #include <sys/syscallargs.h> 48 49 #include <compat/sys/shm.h> 50 51 static void shmid_ds14_to_native(struct shmid_ds14 *, struct shmid_ds *); 52 static void native_to_shmid_ds14(struct shmid_ds *, struct shmid_ds14 *); 53 54 static void 55 shmid_ds14_to_native(struct shmid_ds14 *oshmbuf, struct shmid_ds *shmbuf) 56 { 57 58 ipc_perm14_to_native(&oshmbuf->shm_perm, &shmbuf->shm_perm); 59 60 #define CVT(x) shmbuf->x = oshmbuf->x 61 CVT(shm_segsz); 62 CVT(shm_lpid); 63 CVT(shm_cpid); 64 CVT(shm_nattch); 65 CVT(shm_atime); 66 CVT(shm_dtime); 67 CVT(shm_ctime); 68 #undef CVT 69 } 70 71 static void 72 native_to_shmid_ds14(struct shmid_ds *shmbuf, struct shmid_ds14 *oshmbuf) 73 { 74 75 native_to_ipc_perm14(&shmbuf->shm_perm, &oshmbuf->shm_perm); 76 77 #define CVT(x) oshmbuf->x = shmbuf->x 78 CVT(shm_segsz); 79 CVT(shm_lpid); 80 CVT(shm_cpid); 81 CVT(shm_nattch); 82 CVT(shm_atime); 83 CVT(shm_dtime); 84 CVT(shm_ctime); 85 #undef CVT 86 } 87 88 int 89 compat_14_sys_shmctl(struct lwp *l, const struct compat_14_sys_shmctl_args *uap, register_t *retval) 90 { 91 /* { 92 syscallarg(int) shmid; 93 syscallarg(int) cmd; 94 syscallarg(struct shmid_ds14 *) buf; 95 } */ 96 struct shmid_ds shmbuf; 97 struct shmid_ds14 oshmbuf; 98 int cmd, error; 99 100 cmd = SCARG(uap, cmd); 101 102 if (cmd == IPC_SET) { 103 error = copyin(SCARG(uap, buf), &oshmbuf, sizeof(oshmbuf)); 104 if (error) 105 return (error); 106 shmid_ds14_to_native(&oshmbuf, &shmbuf); 107 } 108 109 error = shmctl1(l, SCARG(uap, shmid), cmd, 110 (cmd == IPC_SET || cmd == IPC_STAT) ? &shmbuf : NULL); 111 112 if (error == 0 && cmd == IPC_STAT) { 113 native_to_shmid_ds14(&shmbuf, &oshmbuf); 114 error = copyout(&oshmbuf, SCARG(uap, buf), sizeof(oshmbuf)); 115 } 116 117 return (error); 118 } 119