Support transparant gunzipping in the readnotes utility.

Signed-off-by: Gerd Hoffmann <kraxel@suse.de>
---
 tools/xcutils/readnotes.c |   14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

Index: build-32-release304-13138/tools/xcutils/readnotes.c
===================================================================
--- build-32-release304-13138.orig/tools/xcutils/readnotes.c
+++ build-32-release304-13138/tools/xcutils/readnotes.c
@@ -11,6 +11,7 @@
 #include <sys/mman.h>
 
 #include <xg_private.h>
+#include <xc_dom.h> /* gunzip bits */
 
 #include <xen/libelf.h>
 
@@ -33,8 +34,8 @@ static void print_numeric_note(const cha
 int main(int argc, char **argv)
 {
 	const char *f;
-	int fd,h,size,count;
-	void *image;
+	int fd,h,size,usize,count;
+	void *image,*tmp;
 	struct stat st;
 	struct elf_binary elf;
 	const elf_shdr *shdr;
@@ -68,6 +69,15 @@ int main(int argc, char **argv)
 	}
 	size = st.st_size;
 
+	usize = xc_dom_check_gzip(image, st.st_size);
+	if (usize)
+	{
+		tmp = malloc(usize);
+		xc_dom_do_gunzip(image, st.st_size, tmp, usize);
+		image = tmp;
+		size = usize;
+	}
+
 	if (0 != elf_init(&elf, image, size))
 	{
 		fprintf(stderr, "File %s is not an ELF image\n", f);