add mkdir

mkdir.c

@@ -0,0 +1,48 @@
+/* See LICENSE file for copyright and license details. */
+#include <errno.h>
+#include <fcntl.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include "util.h"
+
+static void mkdirp(char *);
+
+int
+main(int argc, char *argv[])
+{
+	bool pflag = false;
+	char c;
+
+	while((c = getopt(argc, argv, "p")) != -1)
+		switch(c) {
+		case 'p':
+			pflag = true;
+			break;
+		default:
+			exit(EXIT_FAILURE);
+		}
+	for(; optind < argc; optind++)
+		if(pflag)
+			mkdirp(argv[optind]);
+		else if(mkdir(argv[optind], S_IRWXU|S_IRWXG|S_IRWXO) != 0)
+			eprintf("mkdir %s:", argv[optind]);
+	return EXIT_SUCCESS;
+}
+
+void
+mkdirp(char *path)
+{
+	char *p = path;
+
+	do {
+		if((p = strchr(&p[1], '/')))
+			*p = '\0';
+		if(mkdir(path, S_IRWXU|S_IRWXG|S_IRWXO) != 0 && errno != EEXIST)
+			eprintf("mkdir %s:", path);
+		if(p)
+			*p = '/';
+	} while(p);
+}