devtool: sdk-update: reset git metadata on update

Replace git pull with fetch and reset to avoid the merge logic in the
event that the layers repo in the published SDK we're updating to isn't
fast-forward merge from the local repo.

Also add gitignore and committer info during publish to avoid errors and
to be sure that the first commit has a dummy user in it.

[ YOCTO #9368 ]

Signed-off-by: Stephano Cetola <stephano.cetola@linux.intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>

1 files changed, 8 insertions, 2 deletions

diff --git a/scripts/lib/devtool/sdk.py b/scripts/lib/devtool/sdk.py
index b1905f9863..a22841d789 100644
--- a/scripts/lib/devtool/sdk.py
+++ b/scripts/lib/devtool/sdk.py
@@ -186,9 +186,15 @@ def sdk_update(args, config, basepath, workspace):
                 return 0
             # Update metadata
             logger.debug("Updating metadata via git ...")
-            # Try using 'git pull', if failed, use 'git clone'
+            #Check for the status before doing a fetch and reset
             if os.path.exists(os.path.join(basepath, 'layers/.git')):
-                ret = subprocess.call("git pull %s/layers/.git" % updateserver, shell=True, cwd=layers_dir)
+                out = subprocess.check_output("git status --porcelain", shell=True, cwd=layers_dir)
+                if not out:
+                    ret = subprocess.call("git fetch --all; git reset --hard", shell=True, cwd=layers_dir)
+                else:
+                    logger.error("Failed to update metadata as there have been changes made to it. Aborting.");
+                    logger.error("Changed files:\n%s" % out);
+                    return -1
             else:
                 ret = -1
             if ret != 0: