1 /*- 2 * Copyright (c) 2006 Roman Divacky 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer 10 * in this position and unchanged. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31 #ifndef _LINUX_EMUL_H_ 32 #define _LINUX_EMUL_H_ 33 34 struct linux_emuldata_shared { 35 int refs; 36 pid_t group_pid; 37 38 LIST_HEAD(, linux_emuldata) threads; /* head of list of linux threads */ 39 }; 40 41 /* 42 * modeled after similar structure in NetBSD 43 * this will be extended as we need more functionality 44 */ 45 struct linux_emuldata { 46 pid_t pid; 47 48 int *child_set_tid; /* in clone(): Child's TID to set on clone */ 49 int *child_clear_tid;/* in clone(): Child's TID to clear on exit */ 50 51 struct linux_emuldata_shared *shared; 52 53 int pdeath_signal; /* parent death signal */ 54 55 LIST_ENTRY(linux_emuldata) threads; /* list of linux threads */ 56 }; 57 58 struct linux_emuldata *em_find(struct proc *, int locked); 59 60 #define EMUL_LOCK(l) sx_xlock(l) 61 #define EMUL_UNLOCK(l) sx_xunlock(l) 62 63 #define EMUL_SHARED_RLOCK(l) sx_slock(l) 64 #define EMUL_SHARED_RUNLOCK(l) sx_sunlock(l) 65 #define EMUL_SHARED_WLOCK(l) sx_xlock(l) 66 #define EMUL_SHARED_WUNLOCK(l) sx_xunlock(l) 67 68 /* for em_find use */ 69 #define EMUL_DOLOCK 1 70 #define EMUL_DONTLOCK 0 71 72 int linux_proc_init(struct thread *, pid_t, int); 73 void linux_proc_exit(void *, struct proc *); 74 void linux_schedtail(void *, struct proc *); 75 void linux_proc_exec(void *, struct proc *, struct image_params *); 76 77 extern struct sx emul_shared_lock; 78 extern struct sx emul_lock; 79 80 #endif /* !_LINUX_EMUL_H_ */ 81