/* * Copyright (c) 2004 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this * file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_LICENSE_HEADER_END@ */ #include <unistd.h> #include <stdarg.h> #include <sys/sem.h> #include <sys/syscall.h> /* * Stub function to account for the differences in the ipc_perm structure, * while maintaining binary backward compatibility. */ int semctl(int semid, int semnum, int cmd, ...) { #ifdef __DARWIN_UNIX03 va_list ap; struct __semid_ds_new *ds; va_start(ap, cmd); ds = va_arg(ap, struct __semid_ds_new *); va_end(ap); return syscall(SYS_semctl, semid, semnum, cmd, ds); #else /* !__DARWIN_UNIX03 */ va_list ap; struct __semid_ds_old *ds_old; struct __semid_ds_new ds; struct __semid_ds_new *ds_new = &ds; int rv; va_start(ap, cmd); ds_old = va_arg(ap, struct __semid_ds_old *); va_end(ap); #define _UP_CVT(x) ds_new-> x = ds_old-> x #define _DN_CVT(x) ds_old-> x = ds_new-> x if (cmd == IPC_SET) { /* convert before call */ _UP_CVT(sem_perm.uid); _UP_CVT(sem_perm.gid); _UP_CVT(sem_perm.cuid); _UP_CVT(sem_perm.cgid); _UP_CVT(sem_perm.mode); ds_new->sem_perm._seq = ds_old->sem_perm.seq; ds_new->sem_perm._key = ds_old->sem_perm.key; _UP_CVT(sem_base); _UP_CVT(sem_nsems); _UP_CVT(sem_otime); _UP_CVT(sem_pad1); /* binary compatibility */ _UP_CVT(sem_ctime); _UP_CVT(sem_pad2); /* binary compatibility */ _UP_CVT(sem_pad3[0]); /* binary compatibility */ _UP_CVT(sem_pad3[1]); /* binary compatibility */ _UP_CVT(sem_pad3[2]); /* binary compatibility */ _UP_CVT(sem_pad3[3]); /* binary compatibility */ } rv = syscall(SYS_semctl, semid, semnum, cmd, &ds); if (cmd == IPC_STAT) { /* convert after call */ _DN_CVT(sem_perm.uid); /* warning! precision loss! */ _DN_CVT(sem_perm.gid); /* warning! precision loss! */ _DN_CVT(sem_perm.cuid); /* warning! precision loss! */ _DN_CVT(sem_perm.cgid); /* warning! precision loss! */ _DN_CVT(sem_perm.mode); ds_new->sem_perm.seq = ds_old->sem_perm._seq; ds_new->sem_perm.key = ds_old->sem_perm._key; _DN_CVT(sem_base); _DN_CVT(sem_nsems); _DN_CVT(sem_otime); _DN_CVT(sem_pad1); /* binary compatibility */ _DN_CVT(sem_ctime); _DN_CVT(sem_pad2); /* binary compatibility */ _DN_CVT(sem_pad3[0]); /* binary compatibility */ _DN_CVT(sem_pad3[1]); /* binary compatibility */ _DN_CVT(sem_pad3[2]); /* binary compatibility */ _DN_CVT(sem_pad3[3]); /* binary compatibility */ } return (rv); #endif /* !__DARWIN_UNIX03 */ }