tools: bpftool: add a command to display bpftool version
This command can be used to print the version of the tool, which is in
fact the version from Linux taken from usr/include/linux/version.h.
Example usage:
$ bpftool version
bpftool v4.14.0
Signed-off-by: Quentin Monnet <quentin.monnet@netronome.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/tools/bpf/bpftool/main.c b/tools/bpf/bpftool/main.c
index 8662199..814d19e 100644
--- a/tools/bpf/bpftool/main.c
+++ b/tools/bpf/bpftool/main.c
@@ -37,6 +37,7 @@
#include <ctype.h>
#include <errno.h>
#include <linux/bpf.h>
+#include <linux/version.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
@@ -62,13 +63,23 @@ static int do_help(int argc, char **argv)
fprintf(stderr,
"Usage: %s OBJECT { COMMAND | help }\n"
" %s batch file FILE\n"
+ " %s version\n"
"\n"
" OBJECT := { prog | map }\n",
- bin_name, bin_name);
+ bin_name, bin_name, bin_name);
return 0;
}
+static int do_version(int argc, char **argv)
+{
+ printf("%s v%d.%d.%d\n", bin_name,
+ LINUX_VERSION_CODE >> 16,
+ LINUX_VERSION_CODE >> 8 & 0xf,
+ LINUX_VERSION_CODE & 0xf);
+ return 0;
+}
+
int cmd_select(const struct cmd *cmds, int argc, char **argv,
int (*help)(int argc, char **argv))
{
@@ -128,6 +139,7 @@ static const struct cmd cmds[] = {
{ "batch", do_batch },
{ "prog", do_prog },
{ "map", do_map },
+ { "version", do_version },
{ 0 }
};