[Libsysio-commit] HEAD: libsysio/drivers/native fs_native.c

[Lee W. <lw...@us...>]

Update of /cvsroot/libsysio/libsysio/drivers/native
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv12543/drivers/native

Modified Files:
	fs_native.c 
Log Message:


Begin adding support for thread-safe operation. In detail:

1) Add smp.h and smp_posix.c
2) Add a big lock, wrapping the user API with appropriate mutex_lock and
	mutex_unlock calls. NB; initialization is *not* thread safe.
3) Add support for P_{GET,LOCK}, PB_LOCK, I_{GET,LOCK}, FIL_{GET,LOCK} and
	alter all related ref/de-ref usage to use get/put or lock/unlock
	as appropriate.
4) Remedial (no-op) support for MNT_GET.

By default, POSIX threads supoprt is not enabled. To enable, use --with-threads,
or --with-threads=yes, or --with-threads=posix.


Index: fs_native.c
===================================================================
RCS file: /cvsroot/libsysio/libsysio/drivers/native/fs_native.c,v
retrieving revision 1.65
retrieving revision 1.66
diff -u -w -b -B -p -r1.65 -r1.66
--- fs_native.c	24 Sep 2007 19:00:03 -0000	1.65
+++ fs_native.c	17 Jun 2008 17:18:57 -0000	1.66
@@ -466,17 +466,19 @@ create_internal_namespace(const void *da
 	err = _sysio_mounti(fs, rootino, 0, NULL, &mnt);
 	if (err)
 		goto error;
-
+	I_PUT(rootino);					/* drop ours */
 	native_internal_mount = mnt;
 	return 0;
 error:
 	if (mnt) {
 		if (_sysio_do_unmount(mnt) != 0)
 			abort();
-		nfs = NULL;
-		fs = NULL;
 		rootino = NULL;
+		fs = NULL;
+		nfs = NULL;
 	}
+	if (rootino)
+		I_RELE(rootino);
 	if (fs) {
 		FS_RELE(fs);
 		nfs = NULL;
@@ -537,7 +539,7 @@ native_fsswop_mount(const char *source,
 	 * aliases we might have generated. We really don't need to cache them
 	 * as they are only used at mount time..
 	 */
-	P_RELE(nameidata.nd_pno);
+	P_PUT(nameidata.nd_pno);
 	(void )_sysio_p_prune(native_internal_mount->mnt_root);
 
 	if (!err) {