1 /* $NetBSD: sysv_sem_14.c,v 1.17 2019/01/27 02:08:39 pgoyette 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 1.17 2019/01/27 02:08:39 pgoyette Exp $"); 35 36 #if defined(_KERNEL_OPT) 37 #include "opt_compat_netbsd.h" 38 #endif 39 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/signal.h> 43 #include <sys/proc.h> 44 #include <sys/sem.h> 45 46 #ifndef SYSVSEM 47 #define SYSVSEM 48 #endif 49 50 #include <sys/syscallargs.h> 51 52 #include <compat/sys/sem.h> 53 54 55 int 56 compat_14_sys___semctl(struct lwp *l, const struct compat_14_sys___semctl_args *uap, register_t *retval) 57 { 58 /* { 59 syscallarg(int) semid; 60 syscallarg(int) semnum; 61 syscallarg(int) cmd; 62 syscallarg(union __semun *) arg; 63 } */ 64 union __semun arg; 65 struct semid_ds sembuf; 66 struct semid_ds14 osembuf; 67 int cmd, error; 68 void *pass_arg; 69 70 cmd = SCARG(uap, cmd); 71 72 pass_arg = get_semctl_arg(cmd, &sembuf, &arg); 73 74 if (pass_arg != NULL) { 75 error = copyin(SCARG(uap, arg), &arg, sizeof(arg)); 76 if (error) 77 return (error); 78 if (cmd == IPC_SET) { 79 error = copyin(arg.buf, &osembuf, sizeof(osembuf)); 80 if (error) 81 return (error); 82 __semid_ds14_to_native(&osembuf, &sembuf); 83 } 84 } 85 86 error = semctl1(l, SCARG(uap, semid), SCARG(uap, semnum), cmd, 87 pass_arg, retval); 88 89 if (error == 0 && cmd == IPC_STAT) { 90 __native_to_semid_ds14(&sembuf, &osembuf); 91 error = copyout(&osembuf, arg.buf, sizeof(osembuf)); 92 } 93 94 return (error); 95 } 96