svn commit: r210084 - in stable/8/sys: kern sys

[John Baldwin]

Author: jhb
Date: Wed Jul 14 21:48:16 2010
New Revision: 210084
URL: http://svn.freebsd.org/changeset/base/210084

Log:
  Partially MFC 209592:
  Add a tdksignal() routine that mirrors pksignal() except that it accepts a
  thread instead of a process.  As an extension, if a NULL ksiginfo_t is
  passed in, setup a ksiginfo_t on the stack similar to psignal().  This
  provides semantics matching the new tdsignal() function in 9 while
  preserving the existing ABI.

Modified:
  stable/8/sys/kern/kern_sig.c
  stable/8/sys/sys/signalvar.h
Directory Properties:
  stable/8/sys/   (props changed)
  stable/8/sys/amd64/include/xen/   (props changed)
  stable/8/sys/cddl/contrib/opensolaris/   (props changed)
  stable/8/sys/contrib/dev/acpica/   (props changed)
  stable/8/sys/contrib/pf/   (props changed)
  stable/8/sys/dev/xen/xenpci/   (props changed)

Modified: stable/8/sys/kern/kern_sig.c
==============================================================================
--- stable/8/sys/kern/kern_sig.c	Wed Jul 14 21:47:49 2010	(r210083)
+++ stable/8/sys/kern/kern_sig.c	Wed Jul 14 21:48:16 2010	(r210084)
@@ -1987,6 +1987,24 @@ psignal_event(struct proc *p, struct sig
 	return (tdsignal(p, td, ksi->ksi_signo, ksi));
 }
 
+void
+tdksignal(struct thread *td, int sig, ksiginfo_t *ksi)
+{
+	ksiginfo_t ksi_thunk;
+
+	/*
+	 * If ksi is NULL, use ksi_thunk and provide semantics
+	 * identical to tdsignal() in 9.0+.
+	 */
+	if (ksi == NULL) {
+		ksi = &ksi_thunk;
+		ksiginfo_init(ksi);
+		ksi->ksi_signo = sig;
+		ksi->ksi_code = SI_KERNEL;
+	}
+	(void) tdsignal(td->td_proc, td, sig, ksi);
+}
+
 int
 tdsignal(struct proc *p, struct thread *td, int sig, ksiginfo_t *ksi)
 {

Modified: stable/8/sys/sys/signalvar.h
==============================================================================
--- stable/8/sys/sys/signalvar.h	Wed Jul 14 21:47:49 2010	(r210083)
+++ stable/8/sys/sys/signalvar.h	Wed Jul 14 21:48:16 2010	(r210084)
@@ -345,6 +345,7 @@ void	sigexit(struct thread *td, int sign
 int	sig_ffs(sigset_t *set);
 void	siginit(struct proc *p);
 void	signotify(struct thread *td);
+void	tdksignal(struct thread *td, int sig, ksiginfo_t *ksi);
 void	tdsigcleanup(struct thread *td);
 int	tdsignal(struct proc *p, struct thread *td, int sig,
 	    ksiginfo_t *ksi);