1 /* $NetBSD: sysv_msg_14.c,v 1.17 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_msg_14.c,v 1.17 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/msg.h> 42 43 #include <compat/sys/msg.h> 44 45 #ifndef SYSVMSG 46 #define SYSVMSG 47 #endif 48 49 #include <sys/syscallargs.h> 50 51 static void msqid_ds14_to_native(struct msqid_ds14 *, struct msqid_ds *); 52 static void native_to_msqid_ds14(struct msqid_ds *, struct msqid_ds14 *); 53 54 static void 55 msqid_ds14_to_native(struct msqid_ds14 *omsqbuf, struct msqid_ds *msqbuf) 56 { 57 58 ipc_perm14_to_native(&omsqbuf->msg_perm, &msqbuf->msg_perm); 59 60 #define CVT(x) msqbuf->x = omsqbuf->x 61 CVT(msg_qnum); 62 CVT(msg_qbytes); 63 CVT(msg_lspid); 64 CVT(msg_lrpid); 65 CVT(msg_stime); 66 CVT(msg_rtime); 67 CVT(msg_ctime); 68 #undef CVT 69 } 70 71 static void 72 native_to_msqid_ds14(struct msqid_ds *msqbuf, struct msqid_ds14 *omsqbuf) 73 { 74 75 native_to_ipc_perm14(&msqbuf->msg_perm, &omsqbuf->msg_perm); 76 77 #define CVT(x) omsqbuf->x = msqbuf->x 78 CVT(msg_qnum); 79 CVT(msg_qbytes); 80 CVT(msg_lspid); 81 CVT(msg_lrpid); 82 CVT(msg_stime); 83 CVT(msg_rtime); 84 CVT(msg_ctime); 85 #undef CVT 86 87 /* 88 * Not part of the API, but some programs might look at it. 89 */ 90 omsqbuf->msg_cbytes = msqbuf->_msg_cbytes; 91 } 92 93 int 94 compat_14_sys_msgctl(struct lwp *l, const struct compat_14_sys_msgctl_args *uap, register_t *retval) 95 { 96 /* { 97 syscallarg(int) msqid; 98 syscallarg(int) cmd; 99 syscallarg(struct msqid_ds14 *) buf; 100 } */ 101 struct msqid_ds msqbuf; 102 struct msqid_ds14 omsqbuf; 103 int cmd, error; 104 105 cmd = SCARG(uap, cmd); 106 107 if (cmd == IPC_SET) { 108 error = copyin(SCARG(uap, buf), &omsqbuf, sizeof(omsqbuf)); 109 if (error) 110 return (error); 111 msqid_ds14_to_native(&omsqbuf, &msqbuf); 112 } 113 114 error = msgctl1(l, SCARG(uap, msqid), cmd, 115 (cmd == IPC_SET || cmd == IPC_STAT) ? &msqbuf : NULL); 116 117 if (error == 0 && cmd == IPC_STAT) { 118 native_to_msqid_ds14(&msqbuf, &omsqbuf); 119 error = copyout(&omsqbuf, SCARG(uap, buf), sizeof(omsqbuf)); 120 } 121 122 return (error); 123 } 124