1 files changed, 119 insertions, 0 deletions
diff --git a/os/port/mkroot b/os/port/mkroot
new file mode 100644
index 00000000..9bcf3598
--- /dev/null
+++ b/os/port/mkroot
@@ -0,0 +1,119 @@
+$AWK '
+BEGIN{
+		if (ARGC < 2)
+			exit "usage";
+
+		conf = ARGV[1];
+		infernoroot = ENVIRON["ROOT"];
+		init = ENVIRON["INIT"];
+		data2s = ENVIRON["DATA2S"];
+		nroot = 0;
+}
+/^$/{
+		next;
+}
+/^#/{
+		next;
+}
+collect && /^[^	\t]/{
+		collect = 0;
+}
+collect && section ~ "root"{
+		dst[nroot] = $1;
+		if (NF > 1)
+			src[nroot] = infernoroot $2;
+		else if (dst[nroot] == "/osinit.dis")
+			src[nroot] = infernoroot "/os/init/" init ".dis";
+		else
+			src[nroot] = infernoroot $1;
+		for(i=0; i<nroot; i++)
+			if(dst[i] == dst[nroot])
+				break;
+		if(i == nroot)
+			nroot++;
+}
+$0 ~ /^[^ \t]/{
+		if($0 ~ "(code|dev|ether|ip|lib|link|mod|misc|port|root|vga)"){
+			section = $0;
+			collect = 1;
+		}
+		next;
+}
+END{
+		rootdata = conf ".root.s";
+		system("rm -f " rootdata);
+		print("/* Generated by /os/port/mkroot */") >rootdata;
+		close(rootdata);
+		isdir[0] = 1;
+		dotdot[0] = 0;
+		qid = 1;
+		for (i = 0; i < nroot; i++) {
+			ncomp = split(dst[i], comp, "/");
+			if (comp[1] != "" || ncomp < 2)
+				continue;
+			q = 0;
+			for (j = 2; j <= ncomp; j++) {
+				key = q "/" comp[j];
+				if (walk[key] == 0) {
+					walk[key] = qid;
+					dotdot[qid] = q;
+					q = qid++;
+					name[q] = comp[j];
+					if (j < ncomp)
+						isdir[q] = 1;
+				}
+				else
+					q = walk[key];
+			}
+			if (system("test -d " src[i]) == 0)
+				isdir[q] = 1;
+			else {
+				if (system(data2s " root" q " <" src[i] " >>" rootdata) != 0)
+					exit 1;
+				print("extern unsigned char root" q "code[];");
+				print("extern int root" q "len;");
+			}
+		}
+
+		x = 1;
+		sort[0] = 0;
+		unsort[0] = 0;
+		for (q = 0; q < qid; q++) {
+			if (isdir[q]) {
+				nchild[q] = 0;
+				for (q2 = 1; q2 < qid; q2++) {
+					if (dotdot[q2] == q) {
+						if (nchild[q]++ == 0)
+							child0[q] = x;
+						sort[q2] = x++;
+						unsort[sort[q2]] = q2;
+					}
+				}
+			}
+		}
+
+		print("int rootmaxq = " qid ";");
+
+		print("Dirtab roottab[" qid "] = {");
+		for (oq = 0; oq < qid; oq++) {
+			q = unsort[oq];
+			if (!isdir[q])
+				print("\t\"" name[q] "\",\t{" oq ", 0, QTFILE},\t", "0,\t0444,");
+			else
+				print("\t\"" name[q] "\",\t{" oq ", 0, QTDIR},\t", "0,\t0555,");
+		}
+		print("};");
+
+		print("Rootdata rootdata[" qid "] = {");
+		for (oq = 0; oq < qid; oq++) {
+			q = unsort[oq];
+			if (!isdir[q])
+				print("\t" sort[dotdot[q]] ",\t", "root" q "code,\t", "0,\t", "&root" q "len,");
+			else if (nchild[q])
+				print("\t" sort[dotdot[q]] ",\t", "&roottab[" child0[q] "],\t", nchild[q] ",\tnil,");
+			else
+				print("\t" sort[dotdot[q]] ",\t", "nil,\t", "0,\t", "nil,");
+		}
+		print("};");
+}
+' $1 >$1.root.h