[OE-core] [PATCH 5/6] runqemu: try symlinks when kernel or rootfs can't be found

[Joshua Lock]

If the kernel or rootfs names written to the qemuboot.conf can't
be found, try and find the symlinked variant of the filename.

This will help usability of runqemu, for example where a user
downloads an image and associated files as the symlinked names
yet the qemuboot.conf variables point to the full, non-linked,
file names.

Signed-off-by: Joshua Lock <joshua.g.lock at intel.com>
---
 scripts/runqemu | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/scripts/runqemu b/scripts/runqemu
index 6aaae44..38f9b30 100755
--- a/scripts/runqemu
+++ b/scripts/runqemu
@@ -451,7 +451,12 @@ class BaseConfig(object):
             if all_files:
                 self.rootfs = all_files[0]
             else:
-                raise Exception("Failed to find rootfs: %s" % cmd)
+                cmd = '%s/%s*.%s' % (self.get('DEPLOY_DIR_IMAGE'), self.get('IMAGE_LINK_NAME'), self.fstype)
+                all_files = glob.glob(cmd)
+                if all_files:
+                    self.rootfs = all_files[0]
+                else:
+                    raise Exception("Failed to find rootfs: %s" % cmd)
 
         if not os.path.exists(self.rootfs):
             raise Exception("Can't find rootfs: %s" % self.rootfs)
@@ -462,13 +467,18 @@ class BaseConfig(object):
         if self.fstype in self.vmtypes:
             return
         kernel = self.kernel
+        deploy_dir_image = self.get('DEPLOY_DIR_IMAGE')
         if not kernel:
-            kernel = "%s/%s" % (self.get('DEPLOY_DIR_IMAGE'), self.get('QB_DEFAULT_KERNEL'))
+            kernel = "%s/%s" % (deploy_dir_image, self.get('QB_DEFAULT_KERNEL'))
 
         if os.path.exists(kernel):
             self.kernel = kernel
         else:
-            raise Exception("KERNEL %s not found" % kernel)
+            kernel = "%s/%s" % (deploy_dir_image, self.get('KERNEL_IMAGETYPE'))
+            if kernel != deploy_dir_image and os.path.exists(kernel):
+                self.kernel = kernel
+            else:
+                raise Exception("KERNEL %s not found" % kernel)
 
         dtb = self.get('QB_DTB')
         if dtb:
-- 
2.7.4