force OREAD mode when creating directories. this allows
creating directories on windows 7 explorer. ignore the
smblock changes... its really just the p9mode = OREAD;
line.

Reference: /n/sources/patch/applied/aquarela-mkdir-mode
Date: Mon Aug 23 11:12:46 CES 2010
Signed-off-by: cinap_lenrek@gmx.de

--- /sys/src/cmd/aquarela/smbcomopen.c	Mon Aug 23 11:10:59 2010
+++ /sys/src/cmd/aquarela/smbcomopen.c	Mon Aug 23 11:10:55 2010
@@ -101,6 +101,7 @@
 		else if (createoptions & SMB_CO_DIRECTORY) {
 			attr &= ~SMB_ATTR_NORMAL;
 			attr |= SMB_ATTR_DIRECTORY;
+			p9mode = OREAD;
 		}
 //smblogprint(-1, "creating: before conversion attr 0x%.4ux\n", attr);
 		p9attr = smbdosattr2plan9mode(attr);
@@ -193,7 +194,6 @@
 		goto done;
 	}
 
-	smbloglock();
 	smblogprint(h->command, "flags 0x%.4ux", flags);
 	if (flags & SMB_OPEN_FLAGS_ADDITIONAL)
 		smblogprint(h->command, " additional");
@@ -264,7 +264,6 @@
 	smblogprint(h->command, "createsize 0x%.8lux\n", createsize);
 	smblogprint(h->command, "timeout 0x%.8lux\n", timeout);
 	smblogprint(h->command, "path %s\n", path);
-	smblogunlock();
 
 	t = smbidmapfind(s->tidmap, h->tid);
 	if (t == nil) {
@@ -395,13 +394,11 @@
 		goto done;
 	}
 
-	smbloglock();
 	smblogprint(h->command, "path %s\n", path);
 	smblogprint(h->command, "attr 0x%.4ux", attr);
 	smblogprintattr(h->command, attr);
 	smblogprint(h->command, "\n");
 	smblogprint(h->command, "createtime 0x%.8lux\n", createtime);
-	smblogunlock();
 
 	t = smbidmapfind(s->tidmap, h->tid);
 	if (t == nil) {