Add a 'kvm version' command which prints the version of the kernel
used to build kvm tools.
Part of the code is based on and was loaned from perf.
Suggested-by: Ingo Molnar <mingo@xxxxxxx>
Signed-off-by: Sasha Levin <levinsasha928@xxxxxxxxx>
---
tools/kvm/Documentation/kvm-version.txt | 21 +++++++++++++++
tools/kvm/Makefile | 7 +++++
tools/kvm/command-list.txt | 1 +
tools/kvm/include/kvm/kvm-version.h | 6 ++++
tools/kvm/kvm-cmd.c | 2 +
tools/kvm/kvm-version.c | 15 +++++++++++
tools/kvm/util/KVMTOOLS-VERSION-GEN | 42 +++++++++++++++++++++++++++++++
7 files changed, 94 insertions(+), 0 deletions(-)
create mode 100644 tools/kvm/Documentation/kvm-version.txt
create mode 100644 tools/kvm/include/kvm/kvm-version.h
create mode 100644 tools/kvm/kvm-version.c
create mode 100755 tools/kvm/util/KVMTOOLS-VERSION-GEN
diff --git a/tools/kvm/Documentation/kvm-version.txt b/tools/kvm/Documentation/kvm-version.txt
new file mode 100644
index 0000000..bf51540
--- /dev/null
+++ b/tools/kvm/Documentation/kvm-version.txt
@@ -0,0 +1,21 @@
+kvm-version(1)
+================
+
+NAME
+----
+kvm-version - Print the version of the kernel tree kvm tools
+was built on.
+
+SYNOPSIS
+--------
+[verse]
+'kvm version'
+
+DESCRIPTION
+-----------
+The command prints the version of the kernel that was used to build
+kvm tools.
+
+Note that the version is not the version of the kernel which is currently
+running on the host, but is the version of the kernel tree from which kvm
+tools was built.
diff --git a/tools/kvm/Makefile b/tools/kvm/Makefile
index 51a3d1a..5ec222f 100644
--- a/tools/kvm/Makefile
+++ b/tools/kvm/Makefile
@@ -61,6 +61,7 @@ OBJS += kvm-pause.o
OBJS += kvm-balloon.o
OBJS += kvm-list.o
OBJS += kvm-run.o
+OBJS += kvm-version.o
OBJS += mptable.o
OBJS += rbtree.o
OBJS += threadpool.o
@@ -124,6 +125,7 @@ endif
DEFINES += -D_FILE_OFFSET_BITS=64
DEFINES += -D_GNU_SOURCE
+DEFINES += -DKVMTOOLS_VERSION='"$(KVMTOOLS_VERSION)"'
KVM_INCLUDE := include
CFLAGS += $(CPPFLAGS) $(DEFINES) -I$(KVM_INCLUDE) -I../../include -I../../arch/$(ARCH)/include/ -Os -g
@@ -152,6 +154,10 @@ CFLAGS += $(WARNINGS)
all: $(PROGRAM)
+KVMTOOLS-VERSION-FILE:
+ @$(SHELL_PATH) util/KVMTOOLS-VERSION-GEN $(OUTPUT)
+-include $(OUTPUT)KVMTOOLS-VERSION-FILE
+
$(PROGRAM): $(DEPS) $(OBJS)
$(E) " LINK " $@
$(Q) $(CC) $(OBJS) $(LIBS) -o $@
@@ -168,6 +174,7 @@ $(OBJS):
rbtree.o: ../../lib/rbtree.c
$(Q) $(CC) -c $(CFLAGS) $< -o $@
+
%.o: %.c
$(E) " CC " $@
$(Q) $(CC) -c $(CFLAGS) $< -o $@
diff --git a/tools/kvm/command-list.txt b/tools/kvm/command-list.txt
index 36dcd67b..81ba140 100644
--- a/tools/kvm/command-list.txt
+++ b/tools/kvm/command-list.txt
@@ -4,3 +4,4 @@
#
kvm-run mainporcelain common
kvm-pause common
+kvm-version common
diff --git a/tools/kvm/include/kvm/kvm-version.h b/tools/kvm/include/kvm/kvm-version.h
new file mode 100644
index 0000000..83cac4d
--- /dev/null
+++ b/tools/kvm/include/kvm/kvm-version.h
@@ -0,0 +1,6 @@
+#ifndef KVM__VERSION_H
+#define KVM__VERSION_H
+
+int kvm_cmd_version(int argc, const char **argv, const char *prefix);
+
+#endif
diff --git a/tools/kvm/kvm-cmd.c b/tools/kvm/kvm-cmd.c
index cecf0d0..404065b 100644
--- a/tools/kvm/kvm-cmd.c
+++ b/tools/kvm/kvm-cmd.c
@@ -9,6 +9,7 @@
#include "kvm/kvm-pause.h"
#include "kvm/kvm-balloon.h"
#include "kvm/kvm-list.h"
+#include "kvm/kvm-version.h"
#include "kvm/kvm-help.h"
#include "kvm/kvm-cmd.h"
#include "kvm/kvm-run.h"
@@ -18,6 +19,7 @@ struct cmd_struct kvm_commands[] = {
{ "debug", kvm_cmd_debug, NULL, 0 },
{ "balloon", kvm_cmd_balloon, NULL, 0 },
{ "list", kvm_cmd_list, NULL, 0 },
+ { "version", kvm_cmd_version, NULL, 0 },
{ "help", kvm_cmd_help, NULL, 0 },
{ "run", kvm_cmd_run, kvm_run_help, 0 },
{ NULL, NULL, NULL, 0 },
diff --git a/tools/kvm/kvm-version.c b/tools/kvm/kvm-version.c
new file mode 100644
index 0000000..e30f74c
--- /dev/null
+++ b/tools/kvm/kvm-version.c
@@ -0,0 +1,15 @@
+#include <kvm/util.h>
+#include <kvm/kvm-cmd.h>
+#include <kvm/kvm-version.h>
+#include <kvm/kvm.h>
+
+#include <stdio.h>
+#include <string.h>
+#include <signal.h>
+
+int kvm_cmd_version(int argc, const char **argv, const char *prefix)
+{
+ printf("%s\n", KVMTOOLS_VERSION);
+
+ return 0;
+}
diff --git a/tools/kvm/util/KVMTOOLS-VERSION-GEN b/tools/kvm/util/KVMTOOLS-VERSION-GEN
new file mode 100755
index 0000000..a93c378
--- /dev/null
+++ b/tools/kvm/util/KVMTOOLS-VERSION-GEN
@@ -0,0 +1,42 @@
+#!/bin/sh
+
+if [ $# -eq 1 ] ; then
+ OUTPUT=$1
+fi
+
+GVF=${OUTPUT}KVMTOOLS-VERSION-FILE
+
+LF='
+'
+
+# First check if there is a .git to get the version from git describe
+# otherwise try to get the version from the kernel makefile
+if test -d ../../.git -o -f ../../.git &&
+ VN=$(git describe --abbrev=4 HEAD 2>/dev/null) &&
+ case "$VN" in
+ *$LF*) (exit 1) ;;
+ v[0-9]*)
+ git update-index -q --refresh
+ test -z "$(git diff-index --name-only HEAD --)" ||
+ VN="$VN-dirty" ;;
+ esac
+then
+ VN=$(echo "$VN" | sed -e 's/-/./g');
+else
+ VN=$(MAKEFLAGS= make -sC ../.. kernelversion)
+fi
+
+VN=$(expr "$VN" : v*'\(.*\)')
+
+if test -r $GVF
+then
+ VC=$(sed -e 's/^KVMTOOLS_VERSION = //' <$GVF)
+else
+ VC=unset
+fi
+test "$VN" = "$VC" || {
+ echo >&2 "KVMTOOLS_VERSION = $VN"
+ echo "KVMTOOLS_VERSION = $VN" >$GVF
+}
+
+
--
1.7.6
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