e16fe1c730
around kqueue() to implement epoll subset of functionality. The kqueue user data are 32bit on i386 which is not enough for epoll user data, so we keep user data in the proc emuldata. Initial patch developed by rdivacky@ in 2007, then extended by Yuri Victorovich @ r255672 and finished by me in collaboration with mjg@ and jillies@. Differential Revision: https://reviews.freebsd.org/D1092
79 lines
3.0 KiB
C
79 lines
3.0 KiB
C
/*-
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* Copyright (c) 2006 Roman Divacky
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* Copyright (c) 2013 Dmitry Chagin
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer
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* in this position and unchanged.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _LINUX_EMUL_H_
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#define _LINUX_EMUL_H_
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/*
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* modeled after similar structure in NetBSD
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* this will be extended as we need more functionality
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*/
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struct linux_emuldata {
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int *child_set_tid; /* in clone(): Child's TID to set on clone */
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int *child_clear_tid;/* in clone(): Child's TID to clear on exit */
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int pdeath_signal; /* parent death signal */
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int flags; /* thread emuldata flags */
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int em_tid; /* thread id */
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struct linux_robust_list_head *robust_futexes;
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};
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struct linux_emuldata *em_find(struct thread *);
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void linux_proc_init(struct thread *, struct thread *, int);
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void linux_proc_exit(void *, struct proc *);
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void linux_schedtail(struct thread *);
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void linux_proc_exec(void *, struct proc *, struct image_params *);
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void linux_thread_dtor(void *arg __unused, struct thread *);
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void linux_thread_detach(struct thread *);
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int linux_common_execve(struct thread *, struct image_args *);
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/* process emuldata flags */
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#define LINUX_XDEPR_REQUEUEOP 0x00000001 /* uses deprecated
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futex REQUEUE op*/
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#define LINUX_XUNSUP_EPOLL 0x00000002 /* unsupported epoll events */
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struct linux_pemuldata {
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uint32_t flags; /* process emuldata flags */
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struct sx pem_sx; /* lock for this struct */
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void *epoll; /* epoll data */
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};
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#define LINUX_PEM_XLOCK(p) sx_xlock(&(p)->pem_sx)
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#define LINUX_PEM_XUNLOCK(p) sx_xunlock(&(p)->pem_sx)
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#define LINUX_PEM_SLOCK(p) sx_slock(&(p)->pem_sx)
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#define LINUX_PEM_SUNLOCK(p) sx_sunlock(&(p)->pem_sx)
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struct linux_pemuldata *pem_find(struct proc *);
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#endif /* !_LINUX_EMUL_H_ */
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