klibc-utils: new applets: resume, nuke, minips
minips is a pure alias to ps, just in case someone needs 100% klibc-utils compat.
nuke is a primitive version of "rm -rf" without options and error checks. ~30 bytes.
resume is a tool for initramfs which resumes from a given block device.
function old new delta
resume_main - 582 +582
packed_usage 31640 31712 +72
nuke_main - 28 +28
xstrtoull - 24 +24
applet_names 2646 2665 +19
applet_main 1532 1544 +12
applet_suid 96 97 +1
applet_install_loc 192 193 +1
applet_flags 96 97 +1
------------------------------------------------------------------------------
(add/remove: 5/0 grow/shrink: 6/0 up/down: 740/0) Total: 740 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/klibc-utils/nuke.c b/klibc-utils/nuke.c
new file mode 100644
index 0000000..363e03c
--- /dev/null
+++ b/klibc-utils/nuke.c
@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2017 Denys Vlasenko <vda.linux@googlemail.com>
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
+ */
+//config:config NUKE
+//config: bool "nuke"
+//config: default y
+//config: help
+//config: Alias to "rm -rf".
+
+//applet:IF_NUKE(APPLET_NOEXEC(nuke, nuke, BB_DIR_BIN, BB_SUID_DROP, nuke))
+
+//kbuild:lib-$(CONFIG_NUKE) += nuke.o
+
+//usage:#define nuke_trivial_usage
+//usage: "DIR..."
+//usage:#define nuke_full_usage "\n\n"
+//usage: "Resursively remove DIRs"
+
+#include "libbb.h"
+
+/* This is a NOEXEC applet. Be very careful! */
+
+int nuke_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int nuke_main(int argc UNUSED_PARAM, char **argv)
+{
+// klibc-utils do not check opts, will try to delete "-dir" args
+ //opt = getopt32(argv, "");
+ //argv += optind;
+
+ while (*++argv) {
+#if 0
+// klibc-utils do not check this, will happily operate on ".."
+ const char *base = bb_get_last_path_component_strip(*argv);
+ if (DOT_OR_DOTDOT(base)) {
+ bb_error_msg("can't remove '.' or '..'");
+ continue;
+ }
+#endif
+ remove_file(*argv, FILEUTILS_FORCE | FILEUTILS_RECUR);
+ }
+
+// klibc-utils do not indicate errors
+ return EXIT_SUCCESS;
+}