From 12aee8d9c127a85105b3e8f24cbcebc61c2db3e4 Mon Sep 17 00:00:00 2001
From: dzwdz
Date: Thu, 11 Aug 2022 21:16:15 +0200
Subject: vfs: support for removing files

---
 src/user/app/shell/builtins.c | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

(limited to 'src/user/app/shell/builtins.c')

diff --git a/src/user/app/shell/builtins.c b/src/user/app/shell/builtins.c
index efc427d..6611002 100644
--- a/src/user/app/shell/builtins.c
+++ b/src/user/app/shell/builtins.c
@@ -1,5 +1,6 @@
 #include "builtins.h"
 #include "shell.h"
+#include <camellia/path.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -135,6 +136,40 @@ static void cmd_ls(int argc, char **argv) {
 	}
 }
 
+static void cmd_rm(int argc, char **argv) {
+	if (argc < 2) {
+		eprintf("no arguments");
+		return;
+	}
+	const size_t buflen = PATH_MAX;
+	char *buf = malloc(buflen);
+	for (int i = 1; i < argc; i++) {
+		handle_t h;
+		long ret;
+		size_t abslen;
+		char *path = argv[i];
+		if (*path == '\0') {
+			eprintf("ignoring empty argument");
+			continue;
+		}
+		abslen = absolutepath(buf, path, buflen);
+		if (!abslen) {
+			eprintf("invalid path %s", path);
+			continue;
+		}
+		h = _syscall_open(buf, abslen - 1, 0);
+		if (h < 0) {
+			eprintf("couldn't open %s (err %u)", path, -h);
+			continue;
+		}
+		ret = _syscall_remove(h);
+		if (ret < 0) {
+			eprintf("couldn't remove %s (err %u)", path, -ret);
+			continue;
+		}
+	}
+}
+
 static void cmd_sleep(int argc, char **argv) {
 	if (argc < 2) {
 		eprintf("no arguments");
@@ -177,6 +212,7 @@ struct builtin builtins[] = {
 	{"getsize", cmd_getsize},
 	{"hexdump", cmd_hexdump},
 	{"ls", cmd_ls},
+	{"rm", cmd_rm},
 	{"sleep", cmd_sleep},
 	{"touch", cmd_touch},
 	{"whitelist", cmd_whitelist},
-- 
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