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Diffstat (limited to 'sys/compat/linux/linux_emul.h')
| -rw-r--r-- | sys/compat/linux/linux_emul.h | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/sys/compat/linux/linux_emul.h b/sys/compat/linux/linux_emul.h new file mode 100644 index 0000000..f409a34 --- /dev/null +++ b/sys/compat/linux/linux_emul.h @@ -0,0 +1,121 @@ +/*- + * Copyright (c) 2006 Roman Divacky + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer + * in this position and unchanged. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#ifndef _LINUX_EMUL_H_ +#define _LINUX_EMUL_H_ + +#define EMUL_SHARED_HASXSTAT 0x01 + +struct linux_emuldata_shared { + int refs; + int flags; + int xstat; + pid_t group_pid; + + LIST_HEAD(, linux_emuldata) threads; /* head of list of linux threads */ +}; + +/* + * modeled after similar structure in NetBSD + * this will be extended as we need more functionality + */ +struct linux_emuldata { + pid_t pid; + + int *child_set_tid; /* in clone(): Child's TID to set on clone */ + int *child_clear_tid;/* in clone(): Child's TID to clear on exit */ + + struct linux_emuldata_shared *shared; + + int pdeath_signal; /* parent death signal */ + int flags; /* different emuldata flags */ + + struct linux_robust_list_head *robust_futexes; + + LIST_ENTRY(linux_emuldata) threads; /* list of linux threads */ +}; + +struct linux_emuldata *em_find(struct proc *, int locked); + +/* + * DTrace probes for locks should be fired after locking and before releasing + * to prevent races (to provide data/function stability in dtrace, see the + * output of "dtrace -v ..." and the corresponding dtrace docs). + */ +#define EMUL_LOCK(l) do { \ + mtx_lock(l); \ + LIN_SDT_PROBE1(locks, emul_lock, \ + locked, l); \ + } while (0) +#define EMUL_UNLOCK(l) do { \ + LIN_SDT_PROBE1(locks, emul_lock, \ + unlock, l); \ + mtx_unlock(l); \ + } while (0) + +#define EMUL_SHARED_RLOCK(l) do { \ + sx_slock(l); \ + LIN_SDT_PROBE1(locks, emul_shared_rlock, \ + locked, l); \ + } while (0) +#define EMUL_SHARED_RUNLOCK(l) do { \ + LIN_SDT_PROBE1(locks, emul_shared_rlock, \ + unlock, l); \ + sx_sunlock(l); \ + } while (0) +#define EMUL_SHARED_WLOCK(l) do { \ + sx_xlock(l); \ + LIN_SDT_PROBE1(locks, emul_shared_wlock, \ + locked, l); \ + } while (0) +#define EMUL_SHARED_WUNLOCK(l) do { \ + LIN_SDT_PROBE1(locks, emul_shared_wlock, \ + unlock, l); \ + sx_xunlock(l); \ + } while (0) + +/* for em_find use */ +#define EMUL_DOLOCK 1 +#define EMUL_DONTLOCK 0 + +/* emuldata flags */ +#define LINUX_XDEPR_REQUEUEOP 0x00000001 /* uses deprecated + futex REQUEUE op*/ + +int linux_proc_init(struct thread *, pid_t, int); +void linux_proc_exit(void *, struct proc *); +void linux_schedtail(struct thread *); +void linux_proc_exec(void *, struct proc *, struct image_params *); +void linux_kill_threads(struct thread *, int); + +extern struct sx emul_shared_lock; +extern struct mtx emul_lock; + +#endif /* !_LINUX_EMUL_H_ */ |
