Add some new files needed for linux 2.6.x compatibility.

Please don't style(9) the NetBSD code, we want to stay in sync. Not imported
on a vendor branch since we need local changes.

Sponsored by:	Google SoC 2006
Submitted by:	rdivacky
With help from:	manu@NetBSD.org
Obtained from:	NetBSD (linux_{futex,time}.*)

1 files changed, 74 insertions, 0 deletions

diff --git a/sys/compat/linux/linux_emul.h b/sys/compat/linux/linux_emul.h
new file mode 100644
index 000000000000..2eafb839a647
--- /dev/null
+++ b/sys/compat/linux/linux_emul.h
@@ -0,0 +1,74 @@
+/*-
+ * 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_
+
+struct linux_emuldata_shared {
+   	int	refs;
+	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;
+
+	LIST_ENTRY(linux_emuldata) threads;	/* list of linux threads */
+};
+
+struct linux_emuldata *em_find(struct proc *, int locked);
+
+#define EMUL_LOCK(l)	sx_xlock(l)
+#define EMUL_UNLOCK(l)	sx_xunlock(l)
+
+#define EMUL_SHARED_RLOCK(l) sx_slock(l)
+#define EMUL_SHARED_RUNLOCK(l) sx_sunlock(l)
+#define EMUL_SHARED_WLOCK(l) sx_xlock(l)
+#define EMUL_SHARED_WUNLOCK(l) sx_xunlock(l)
+
+/* for em_find use */
+#define EMUL_LOCKED		1
+#define EMUL_UNLOCKED		0
+
+int linux_proc_init(struct thread *, pid_t, int);
+void linux_proc_exit(void *, struct proc *);
+void linux_schedtail(void *, struct proc *);
+void linux_proc_exec(void *, struct proc *, struct image_params *);
+
+#endif /* !_LINUX_EMUL_H_ */