mkdir -p

apps/mkdir.c

@@ -9,17 +9,63 @@
  */
 #include <stdio.h>
 #include <stdint.h>
-
+#include <string.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <errno.h>
 #include <sys/stat.h>
 #include <sys/types.h>
 
+int makedir(const char * dir, int mask, int parents) {
+	if (!parents) return mkdir(dir,mask);
+
+	char * tmp = strdup(dir);
+	char * c = tmp;
+	while ((c = strchr(c+1,'/'))) {
+		*c = '\0';
+		if (mkdir(tmp,mask) < 0) {
+			if (errno == EEXIST) {
+				*c = '/';
+				continue;
+			} else {
+				return -1;
+			}
+		}
+		*c = '/';
+		continue;
+	}
+
+	return mkdir(tmp, mask);
+}
+
 int main(int argc, char ** argv) {
-	if (argc < 2) {
+	int retval = 0;
+	int parents = 0;
+	int opt;
+
+	while ((opt = getopt(argc, argv, "m:p")) != -1) {
+		switch (opt) {
+			case 'm':
+				fprintf(stderr, "%s: -m unsupported\n", argv[0]);
+				return 1;
+			case 'p':
+				parents = 1;
+				break;
+		}
+	}
+
+	if (optind == argc) {
 		fprintf(stderr, "%s: expected argument\n", argv[0]);
 		return 1;
 	}
 
-	mkdir(argv[1], 0x00);
+	for (int i = optind; i < argc; ++i) {
+		if (makedir(argv[i], 0777, parents) < 0) {
+			if (parents && errno == EEXIST) continue;
+			fprintf(stderr, "%s: %s: %s\n", argv[0], argv[i], strerror(errno));
+			retval = 1;
+		}
+	}
 
-	return 0;
+	return retval;
 }