1 /* $NetBSD: sysv_sem_14.c,v 1.14 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_sem_14.c,v 1.14 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/sem.h> 42 43 #ifndef SYSVSEM 44 #define SYSVSEM 45 #endif 46 47 #include <sys/syscallargs.h> 48 49 #include <compat/sys/sem.h> 50 51 void 52 semid_ds14_to_native(struct semid_ds14 *osembuf, struct semid_ds *sembuf) 53 { 54 55 ipc_perm14_to_native(&osembuf->sem_perm, &sembuf->sem_perm); 56 57 #define CVT(x) sembuf->x = osembuf->x 58 CVT(sem_nsems); 59 CVT(sem_otime); 60 CVT(sem_ctime); 61 #undef CVT 62 } 63 64 void 65 native_to_semid_ds14(struct semid_ds *sembuf, struct semid_ds14 *osembuf) 66 { 67 68 memset(sembuf, 0, sizeof *sembuf); 69 native_to_ipc_perm14(&sembuf->sem_perm, &osembuf->sem_perm); 70 71 #define CVT(x) osembuf->x = sembuf->x 72 CVT(sem_nsems); 73 CVT(sem_otime); 74 CVT(sem_ctime); 75 #undef CVT 76 } 77 78 int 79 compat_14_sys___semctl(struct lwp *l, const struct compat_14_sys___semctl_args *uap, register_t *retval) 80 { 81 /* { 82 syscallarg(int) semid; 83 syscallarg(int) semnum; 84 syscallarg(int) cmd; 85 syscallarg(union __semun *) arg; 86 } */ 87 union __semun arg; 88 struct semid_ds sembuf; 89 struct semid_ds14 osembuf; 90 int cmd, error; 91 void *pass_arg; 92 93 cmd = SCARG(uap, cmd); 94 95 pass_arg = get_semctl_arg(cmd, &sembuf, &arg); 96 97 if (pass_arg != NULL) { 98 error = copyin(SCARG(uap, arg), &arg, sizeof(arg)); 99 if (error) 100 return (error); 101 if (cmd == IPC_SET) { 102 error = copyin(arg.buf, &osembuf, sizeof(osembuf)); 103 if (error) 104 return (error); 105 semid_ds14_to_native(&osembuf, &sembuf); 106 } 107 } 108 109 error = semctl1(l, SCARG(uap, semid), SCARG(uap, semnum), cmd, 110 pass_arg, retval); 111 112 if (error == 0 && cmd == IPC_STAT) { 113 native_to_semid_ds14(&sembuf, &osembuf); 114 error = copyout(&osembuf, arg.buf, sizeof(osembuf)); 115 } 116 117 return (error); 118 } 119