u9fs: cumulative patch:
1) close transient fds
2) rx->uname = sp->t.suid in p9any
3) use proper fcall fid/afid in p9any read/write/clunk.
4) ANSI style isfrog[]

Reference: /n/sources/patch/u9fs-close
Date: Wed Mar  4 11:56:03 CET 2015
Signed-off-by: yarikos@gmail.com

--- /sys/src/cmd/unix/u9fs/authp9any.c	Wed Mar  4 11:43:18 2015
+++ /sys/src/cmd/unix/u9fs/authp9any.c	Wed Mar  4 11:43:13 2015
@@ -306,6 +306,7 @@
 
 	if((n = readn(fd, abuf, sizeof(abuf)-1)) < 0)
 		sysfatal("can't read key file '%s'", af);
+	close(fd);
 	if (n > 0 && abuf[n - 1] == '\n')
 		n--;
 	abuf[n] = '\0';
@@ -369,7 +370,10 @@
 		fprint(2, "p9anyattach: afid %d state %d\n", rx->afid, sp->state);
 	if (sp->state == Established && strcmp(rx->uname, sp->uname) == 0
 		&& strcmp(rx->aname, sp->aname) == 0)
+	{
+		rx->uname = sp->t.suid;
 		return nil;
+	}
 	return "authentication failed";
 }
 
@@ -392,7 +396,7 @@
 	char *ep;
 
 	Fid *f;
-	f = oldauthfid(rx->afid, (void **)&sp, &ep);
+	f = oldauthfid(rx->fid, (void **)&sp, &ep);
 	if (f == nil)
 		return ep;
 	if (chatty9p)
@@ -437,7 +441,7 @@
 
 	Fid *f;
 
-	f = oldauthfid(rx->afid, (void **)&sp, &ep);
+	f = oldauthfid(rx->fid, (void **)&sp, &ep);
 	if (f == nil)
 		return ep;
 	if (chatty9p)
@@ -515,7 +519,7 @@
 	AuthSession *sp;
 	char *ep;
 
-	f = oldauthfid(rx->afid, (void **)&sp, &ep);
+	f = oldauthfid(rx->fid, (void **)&sp, &ep);
 	if (f == nil)
 		return ep;
 	if (chatty9p)
--- /sys/src/cmd/unix/u9fs/u9fs.c	Wed Mar  4 11:43:31 2015
+++ /sys/src/cmd/unix/u9fs/u9fs.c	Wed Mar  4 11:55:26 2015
@@ -167,8 +167,18 @@
 	/*BKS*/	1, 1, 1, 1, 1, 1, 1, 1,
 	/*DLE*/	1, 1, 1, 1, 1, 1, 1, 1,
 	/*CAN*/	1, 1, 1, 1, 1, 1, 1, 1,
-	['/']	1,
-	[0x7f]	1,
+	/*' '*/	0, 0, 0, 0, 0, 0, 0, 0,
+	/*'('*/	0, 0, 0, 0, 0, 0, 0, 1,	/*'/'*/
+	/*'0'*/	0, 0, 0, 0, 0, 0, 0, 0,
+	/*'8'*/	0, 0, 0, 0, 0, 0, 0, 0,
+	/*'@'*/	0, 0, 0, 0, 0, 0, 0, 0,
+	/*'H'*/	0, 0, 0, 0, 0, 0, 0, 0,
+	/*'P'*/	0, 0, 0, 0, 0, 0, 0, 0,
+	/*'X'*/	0, 0, 0, 0, 0, 0, 0, 0,
+	/*'`'*/	0, 0, 0, 0, 0, 0, 0, 0,
+	/*'h'*/	0, 0, 0, 0, 0, 0, 0, 0,
+	/*'p'*/	0, 0, 0, 0, 0, 0, 0, 0,
+	/*'x'*/	0, 0, 0, 0, 0, 0, 0, 1,	/*DEL*/
 };
 
 void
@@ -1735,6 +1745,7 @@
 
 	if(dup2(fd, 2) < 0)
 		sysfatal("cannot dup fd onto stderr");
+	close(fd);
 	fprint(2, "u9fs\nkill %d\n", (int)getpid());
 
 	fmtinstall('F', fcallconv);