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commit 3277417475572fb6cf9c7db71797f6cc2fee08d9
parent 548365d3b9a55bab7fafc5d91fda2dcc6219b5ef
Author: phoebos <ben@bvnf.space>
Date:   Thu, 30 Sep 2021 21:36:24 +0100

mkdir: add

Diffstat:
M
Makefile
 | 
1
+
A
mkdir.c
 | 
46
++++++++++++++++++++++++++++++++++++++++++++++

2 files changed, 47 insertions(+), 0 deletions(-)
diff --git a/Makefile b/Makefile
@@ -6,6 +6,7 @@ BINS = \
 	ed \
 	false \
 	ls \
+	mkdir \
 	tee \
 	true \
 	wc \
diff --git a/mkdir.c b/mkdir.c
@@ -0,0 +1,46 @@
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+int
+main(int argc, char **argv) {
+    int c;
+    int flag_p = 0;
+    mode_t mode = 0755;
+    while ((c = getopt(argc, argv, "pm:")) != -1) {
+            switch (c) {
+                case 'p':
+                    flag_p = 1;
+                    break;
+                case 'm':
+                    errno = 0;
+                    mode = (mode_t) strtol(optarg, NULL, 8);
+                    if (errno != 0) {
+                        fprintf(stderr, "mkdir: %s: %s\n", optarg, strerror(errno));
+                        return 1;
+                    }
+                    fprintf(stderr, "got mode = %d\n", mode);
+                    break;
+            }
+    }
+    argc -= optind;
+    if (argc < 1) {
+        fprintf(stderr, "usage: %s file...\n", *argv);
+        return 1;
+    }
+    argv += optind - 1;
+
+    while (*++argv) {
+        if (mkdir(*argv, mode) == -1) {
+            if (errno == EEXIST && flag_p)
+                continue;
+            fprintf(stderr, "mkdir: %s: %s\n", *argv, strerror(errno));
+            return 1;
+        }
+    }
+
+    return 0;
+}