add directory study

study/linux-travel/MINIX-1.5/1.5/Source/commands/mkdir.c

@@ -0,0 +1,52 @@
+/* mkdir - make a directory		Author: Adri Koppes */
+
+#include <sys/types.h>
+#include <signal.h>
+
+int error = 0;
+
+main(argc, argv)
+int argc;
+char **argv;
+{
+  if (argc < 2) {
+	std_err("Usage: mkdir directory...\n");
+	exit(1);
+  }
+  signal(SIGHUP, SIG_IGN);
+  signal(SIGINT, SIG_IGN);
+  signal(SIGQUIT, SIG_IGN);
+  signal(SIGTERM, SIG_IGN);
+  while (--argc) makedir(*++argv);
+  if (error) exit(1);
+}
+
+makedir(dirname)
+char *dirname;
+{
+  char dots[128], parent[128];
+  int sl = 0, i = 0;
+
+  while (dirname[i])
+	if (dirname[i++] == '/') sl = i;
+  strncpy(parent, dirname, sl);
+  parent[sl] = '\0';
+  strcat(parent, ".");
+  if (access(parent, 2)) {
+	stderr3("mkdir: can't access ", parent, "\n");
+	exit(1);
+  }
+  if (mkdir(dirname, 0777)) {
+	stderr3("mkdir: can't create ", dirname, "\n");
+	error++;
+	return;
+  }
+}
+
+stderr3(s1, s2, s3)
+char *s1, *s2, *s3;
+{
+  std_err(s1);
+  std_err(s2);
+  std_err(s3);
+}