| 1 | /* $NetBSD: sysv_sem_14.c,v 1.16 2011/01/19 10:21:16 tsutsui 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 1.16 2011/01/19 10:21:16 tsutsui 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/sem.h> |
| 41 | |
| 42 | #ifndef SYSVSEM |
| 43 | #define SYSVSEM |
| 44 | #endif |
| 45 | |
| 46 | #include <sys/syscallargs.h> |
| 47 | |
| 48 | #include <compat/sys/sem.h> |
| 49 | |
| 50 | |
| 51 | int |
| 52 | compat_14_sys___semctl(struct lwp *l, const struct compat_14_sys___semctl_args *uap, register_t *retval) |
| 53 | { |
| 54 | /* { |
| 55 | syscallarg(int) semid; |
| 56 | syscallarg(int) semnum; |
| 57 | syscallarg(int) cmd; |
| 58 | syscallarg(union __semun *) arg; |
| 59 | } */ |
| 60 | union __semun arg; |
| 61 | struct semid_ds sembuf; |
| 62 | struct semid_ds14 osembuf; |
| 63 | int cmd, error; |
| 64 | void *pass_arg; |
| 65 | |
| 66 | cmd = SCARG(uap, cmd); |
| 67 | |
| 68 | pass_arg = get_semctl_arg(cmd, &sembuf, &arg); |
| 69 | |
| 70 | if (pass_arg != NULL) { |
| 71 | error = copyin(SCARG(uap, arg), &arg, sizeof(arg)); |
| 72 | if (error) |
| 73 | return (error); |
| 74 | if (cmd == IPC_SET) { |
| 75 | error = copyin(arg.buf, &osembuf, sizeof(osembuf)); |
| 76 | if (error) |
| 77 | return (error); |
| 78 | __semid_ds14_to_native(&osembuf, &sembuf); |
| 79 | } |
| 80 | } |
| 81 | |
| 82 | error = semctl1(l, SCARG(uap, semid), SCARG(uap, semnum), cmd, |
| 83 | pass_arg, retval); |
| 84 | |
| 85 | if (error == 0 && cmd == IPC_STAT) { |
| 86 | __native_to_semid_ds14(&sembuf, &osembuf); |
| 87 | error = copyout(&osembuf, arg.buf, sizeof(osembuf)); |
| 88 | } |
| 89 | |
| 90 | return (error); |
| 91 | } |
| 92 | |