1 /* $NetBSD: sysv_msg_14.c,v 1.15 2007/12/08 18:35:54 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_msg_14.c,v 1.15 2007/12/08 18:35:54 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/msg.h> 49 50 #include <compat/sys/msg.h> 51 52 #ifndef SYSVMSG 53 #define SYSVMSG 54 #endif 55 56 #include <sys/syscallargs.h> 57 58 static void msqid_ds14_to_native(struct msqid_ds14 *, struct msqid_ds *); 59 static void native_to_msqid_ds14(struct msqid_ds *, struct msqid_ds14 *); 60 61 static void 62 msqid_ds14_to_native(struct msqid_ds14 *omsqbuf, struct msqid_ds *msqbuf) 63 { 64 65 ipc_perm14_to_native(&omsqbuf->msg_perm, &msqbuf->msg_perm); 66 67 #define CVT(x) msqbuf->x = omsqbuf->x 68 CVT(msg_qnum); 69 CVT(msg_qbytes); 70 CVT(msg_lspid); 71 CVT(msg_lrpid); 72 CVT(msg_stime); 73 CVT(msg_rtime); 74 CVT(msg_ctime); 75 #undef CVT 76 } 77 78 static void 79 native_to_msqid_ds14(struct msqid_ds *msqbuf, struct msqid_ds14 *omsqbuf) 80 { 81 82 native_to_ipc_perm14(&msqbuf->msg_perm, &omsqbuf->msg_perm); 83 84 #define CVT(x) omsqbuf->x = msqbuf->x 85 CVT(msg_qnum); 86 CVT(msg_qbytes); 87 CVT(msg_lspid); 88 CVT(msg_lrpid); 89 CVT(msg_stime); 90 CVT(msg_rtime); 91 CVT(msg_ctime); 92 #undef CVT 93 94 /* 95 * Not part of the API, but some programs might look at it. 96 */ 97 omsqbuf->msg_cbytes = msqbuf->_msg_cbytes; 98 } 99 100 int 101 compat_14_sys_msgctl(struct lwp *l, void *v, register_t *retval) 102 { 103 struct compat_14_sys_msgctl_args /* { 104 syscallarg(int) msqid; 105 syscallarg(int) cmd; 106 syscallarg(struct msqid_ds14 *) buf; 107 } */ *uap = v; 108 struct msqid_ds msqbuf; 109 struct msqid_ds14 omsqbuf; 110 int cmd, error; 111 112 cmd = SCARG(uap, cmd); 113 114 if (cmd == IPC_SET) { 115 error = copyin(SCARG(uap, buf), &omsqbuf, sizeof(omsqbuf)); 116 if (error) 117 return (error); 118 msqid_ds14_to_native(&omsqbuf, &msqbuf); 119 } 120 121 error = msgctl1(l, SCARG(uap, msqid), cmd, 122 (cmd == IPC_SET || cmd == IPC_STAT) ? &msqbuf : NULL); 123 124 if (error == 0 && cmd == IPC_STAT) { 125 native_to_msqid_ds14(&msqbuf, &omsqbuf); 126 error = copyout(&omsqbuf, SCARG(uap, buf), sizeof(omsqbuf)); 127 } 128 129 return (error); 130 } 131