From 8b054b1cf80cd79dad7412e420a761477f8f7684 Mon Sep 17 00:00:00 2001
From: h2-addad <hamza2.addad@live.uwe.ac.uk>
Date: Sun, 16 Jul 2023 01:00:07 +0000
Subject: [PATCH] Update
---
src/examples/ls.c | 80 +++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 80 insertions(+)
create mode 100644 src/examples/ls.c
diff --git a/src/examples/ls.c b/src/examples/ls.c
new file mode 100644
index 0000000..4a33e1a
--- /dev/null
+++ b/src/examples/ls.c
@@ -0,0 +1,80 @@
+#include <syscall.h>
+#include <stdio.h>
+#include <string.h>
+
+static bool
+list_dir (const char *dir, bool verbose)
+{
+ int dir_fd = open (dir);
+ if (dir_fd == -1)
+ {
+ printf ("%s: not found\n", dir);
+ return false;
+ }
+
+ if (isdir (dir_fd))
+ {
+ char name[READDIR_MAX_LEN];
+
+ printf ("%s", dir);
+ if (verbose)
+ printf (" (inumber %d)", inumber (dir_fd));
+ printf (":\n");
+
+ while (readdir (dir_fd, name))
+ {
+ printf ("%s", name);
+ if (verbose)
+ {
+ char full_name[128];
+ int entry_fd;
+
+ snprintf (full_name, sizeof full_name, "%s/%s", dir, name);
+ entry_fd = open (full_name);
+
+ printf (": ");
+ if (entry_fd != -1)
+ {
+ if (isdir (entry_fd))
+ printf ("directory");
+ else
+ printf ("%d-byte file", filesize (entry_fd));
+ printf (", inumber %d", inumber (entry_fd));
+ }
+ else
+ printf ("open failed");
+ close (entry_fd);
+ }
+ printf ("\n");
+ }
+ }
+ else
+ printf ("%s: not a directory\n", dir);
+ close (dir_fd);
+ return true;
+}
+
+int
+main (int argc, char *argv[])
+{
+ bool success = true;
+ bool verbose = false;
+
+ if (argc > 1 && !strcmp (argv[1], "-l"))
+ {
+ verbose = true;
+ argv++;
+ argc--;
+ }
+
+ if (argc <= 1)
+ success = list_dir (".", verbose);
+ else
+ {
+ int i;
+ for (i = 1; i < argc; i++)
+ if (!list_dir (argv[i], verbose))
+ success = false;
+ }
+ return success ? EXIT_SUCCESS : EXIT_FAILURE;
+}
--
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