Add unlink() syscall and /bin/rm.

This patch adds most of the plumbing for working file deletion in Ext2FS.
Directory entries are removed and inode link counts updated.
We don't yet update the inode or block bitmaps, I will do that separately.

1 files changed, 18 insertions, 0 deletions

diff --git a/Userland/rm.cpp b/Userland/rm.cpp
new file mode 100644
index 0000000000..606d92d7d9
--- /dev/null
+++ b/Userland/rm.cpp
@@ -0,0 +1,18 @@
+#include <stdio.h>
+#include <errno.h>
+#include <unistd.h>
+
+int main(int argc, char** argv)
+{
+    if (argc != 2) {
+        fprintf(stderr, "usage: rm <path>\n");
+        return 1;
+    }
+    int rc = unlink(argv[1]);
+    if (rc < 0) {
+        perror("unlink");
+        return 1;
+    }
+    return 0;
+}
+