1 /* $NetBSD: sysv_sem_14.c,v 1.12 2007/06/17 10:23:27 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_sem_14.c,v 1.12 2007/06/17 10:23:27 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/sem.h> 49 50 #ifndef SYSVSEM 51 #define SYSVSEM 52 #endif 53 54 #include <sys/syscallargs.h> 55 56 #include <compat/sys/sem.h> 57 58 void 59 semid_ds14_to_native(struct semid_ds14 *osembuf, struct semid_ds *sembuf) 60 { 61 62 ipc_perm14_to_native(&osembuf->sem_perm, &sembuf->sem_perm); 63 64 #define CVT(x) sembuf->x = osembuf->x 65 CVT(sem_nsems); 66 CVT(sem_otime); 67 CVT(sem_ctime); 68 #undef CVT 69 } 70 71 void 72 native_to_semid_ds14(struct semid_ds *sembuf, struct semid_ds14 *osembuf) 73 { 74 75 memset(sembuf, 0, sizeof *sembuf); 76 native_to_ipc_perm14(&sembuf->sem_perm, &osembuf->sem_perm); 77 78 #define CVT(x) osembuf->x = sembuf->x 79 CVT(sem_nsems); 80 CVT(sem_otime); 81 CVT(sem_ctime); 82 #undef CVT 83 } 84 85 int 86 compat_14_sys___semctl(struct lwp *l, void *v, register_t *retval) 87 { 88 struct compat_14_sys___semctl_args /* { 89 syscallarg(int) semid; 90 syscallarg(int) semnum; 91 syscallarg(int) cmd; 92 syscallarg(union __semun *) arg; 93 } */ *uap = v; 94 union __semun arg; 95 struct semid_ds sembuf; 96 struct semid_ds14 osembuf; 97 int cmd, error; 98 void *pass_arg; 99 100 cmd = SCARG(uap, cmd); 101 102 pass_arg = get_semctl_arg(cmd, &sembuf, &arg); 103 104 if (pass_arg != NULL) { 105 error = copyin(SCARG(uap, arg), &arg, sizeof(arg)); 106 if (error) 107 return (error); 108 if (cmd == IPC_SET) { 109 error = copyin(arg.buf, &osembuf, sizeof(osembuf)); 110 if (error) 111 return (error); 112 semid_ds14_to_native(&osembuf, &sembuf); 113 } 114 } 115 116 error = semctl1(l, SCARG(uap, semid), SCARG(uap, semnum), cmd, 117 pass_arg, retval); 118 119 if (error == 0 && cmd == IPC_STAT) { 120 native_to_semid_ds14(&sembuf, &osembuf); 121 error = copyout(&osembuf, arg.buf, sizeof(osembuf)); 122 } 123 124 return (error); 125 } 126