allow rfork(RFNOTEG|RFPROC|RFFDG) for rc.

src/lib9/dirread.c

diff --git a/src/lib9/dirread.c b/src/lib9/dirread.c
index 5aa5c44..4105e87 100644
--- a/src/lib9/dirread.c
+++ b/src/lib9/dirread.c
@@ -50,8 +50,7 @@
 			de->d_name[0] = 0;
 		else if(de->d_name[0]=='.' && de->d_name[1]=='.' && de->d_name[2]==0)
 			de->d_name[0] = 0;
-		else
-			m++;
+		m++;
 		p += de->d_reclen;
 	}
 	return m;
@@ -78,9 +77,12 @@
 		
 	p = buf;
 	nstr = 0;
+
 	for(i=0; i<n; i++){
 		de = (struct dirent*)p;
-		if(stat(de->d_name, &st) < 0)
+		if(de->d_name[0] == 0)
+			/* nothing */ {}
+		else if(stat(de->d_name, &st) < 0)
 			de->d_name[0] = 0;
 		else
 			nstr += _p9dir(&st, de->d_name, nil, nil, nil);

src/lib9/rfork.c

diff --git a/src/lib9/rfork.c b/src/lib9/rfork.c
index 41d3f9d..270c3cd 100644
--- a/src/lib9/rfork.c
+++ b/src/lib9/rfork.c
@@ -4,6 +4,20 @@
 int
 p9rfork(int flags)
 {
+	int pid;
+
+	if((flags&(RFPROC|RFFDG|RFMEM)) == (RFPROC|RFFDG)){
+		/* check other flags before we commit */
+		flags &= ~(RFPROC|RFFDG);
+		if(flags & ~(RFNOTEG)){
+			werrstr("unknown flags %08ux in rfork", flags);
+			return -1;
+		}
+		pid = fork();
+		if(pid != 0)
+			return pid;
+	}
+
 	if(flags&RFPROC){
 		werrstr("cannot use rfork to fork -- use ffork");
 		return -1;