update all NEED_ROOT uses

[libguestfs.git] / daemon / hexdump.c

diff --git a/daemon/hexdump.c b/daemon/hexdump.c
index a582c57..faf3dc5 100644 (file)
--- a/daemon/hexdump.c
+++ b/daemon/hexdump.c
@@ -28,23 +28,19 @@
 char *
 do_hexdump (char *path)
 {
-  int len;
   char *buf;
   int r;
   char *out, *err;
 
-  NEED_ROOT (NULL);
-  ABS_PATH (path, NULL);
+  NEED_ROOT (return NULL);
+  ABS_PATH (path, return NULL);
 
-  len = strlen (path) + 9;
-  buf = malloc (len);
+  buf = sysroot_path (path);
   if (!buf) {
     reply_with_perror ("malloc");
     return NULL;
   }
 
-  snprintf (buf, len, "/sysroot%s", path);
-
   r = command (&out, &err, "hexdump", "-C", buf, NULL);
   free (buf);
   if (r == -1) {