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--- howto:git [2021/12/26 10:29] – [Test Scenario] va7fi
+++ howto:git [2021/12/26 12:26] (current) – [Test Scenarios] va7fi
@@ Line 1: / Line 1: @@
 ====== Git ======
-===== Test Scenario =====
+===== Test Scenarios =====
+Summary:
+  * When cloning from remote to local or pushing from local to remote, ''www-data'' group ownership and ''770'' permissions are not preserved.
+  * When pushing local changes to remote, the remote master can't be checkout out.
+References:
+  * [[https://stackoverflow.com/questions/3207728/retaining-file-permissions-with-git |stackoverflow]] question about permissions.
+  * Using [[https://githooks.com/ |git hooks]] to run pre- and post- scripts to fix permissions.
+==== Initial Cloning ====
   * Create two files in a ''remote'' folder to simulate the wiki install on the server.
   * Change their permissions and ownership to match what's on the server:<code bash>
-ptruchon@ThinkPad-T440:~/gittest/remote$ ls -l
+~/gittest/remote$ ls -l
 total 24
 -rwxrwx--- 1 ptruchon www-data 26 Dec 26 10:20 file1.txt
@@ Line 9: / Line 19: @@
 </code>
+  * Initialize git:<code bash>
+git init
+git add .
+git commit -m 'initial commit on remote'
+git log
+commit 0e5ccdedd1c9188996aadad3a8e2be5a319ab789 (HEAD -> master)
+Author: Patrick Truchon <patoo@rbox.me>
+Date:   Sun Dec 26 10:21:24 2021 -0800
+    initial commit on remote
+</code>
+  * Create a local folder and clone from remote:<code bash>
+git clone ~/gittest/remote/ ~/gittest/local/
+</code>
+  * The log on the local copy looks good:<code bash>
+~/gittest/local$ git log
+commit 0e5ccdedd1c9188996aadad3a8e2be5a319ab789 (HEAD -> master, origin/master, origin/HEAD)
+Author: Patrick Truchon <patoo@rbox.me>
+Date:   Sun Dec 26 10:21:24 2021 -0800
+    initial commit on remote
+</code>
+  * But the ''www-data'' group ownership and the 770 permissions weren't preserved:<code bash>
+~/gittest/local$ ls -l
+total 24
+-rwxrwxr-x 1 ptruchon ptruchon 26 Dec 26 10:24 file1.txt
+-rwxrwxr-x 1 ptruchon ptruchon 26 Dec 26 10:24 file2.txt
+</code>
+  * Change the group back to ''www-data'' and permissions back to 770:<code bash>
+sudo chgrp www-data *; chmod 770 *
+ls -l
+total 24
+-rwxrwx--- 1 ptruchon www-data 26 Dec 26 10:24 file1.txt
+-rwxrwx--- 1 ptruchon www-data 26 Dec 26 10:24 file2.txt
+</code>
+==== Making Local Changes ====
+  * Edit ''file1.txt'' from the local directory.<code bash>
+~/gittest/local$ git status
+On branch master
+Your branch is up to date with 'origin/master'.
+Changes not staged for commit:
+  (use "git add <file>..." to update what will be committed)
+  (use "git restore <file>..." to discard changes in working directory)
+	modified:   file1.txt
+no changes added to commit (use "git add" and/or "git commit -a")
+</code>
+  * Commit changes in git:<code bash>
+git add .
+git commit -m 'changed file1.txt from local'
+git status
+On branch master
+Your branch is ahead of 'origin/master' by 1 commit.
+  (use "git push" to publish your local commits)
+nothing to commit, working tree clean
+git log
+commit b7d91058fed9fe64c96525a3d0bef56c682ade68 (HEAD -> master)
+Author: Patrick Truchon <patoo@rbox.me>
+Date:   Sun Dec 26 10:45:41 2021 -0800
+    changed file1.txt from local
+commit 0e5ccdedd1c9188996aadad3a8e2be5a319ab789 (origin/master, origin/HEAD)
+Author: Patrick Truchon <patoo@rbox.me>
+Date:   Sun Dec 26 10:21:24 2021 -0800
+    initial commit on remote
+</code>
+==== Push Changes to Remote ====
+  * Attempting to push changes to remote while master is still checked out on remote doesn't work:<code bash>
+~/gittest/local$ git push origin master
+Enumerating objects: 5, done.
+Counting objects: 100% (5/5), done.
+Delta compression using up to 4 threads
+Compressing objects: 100% (3/3), done.
+Writing objects: 100% (3/3), 329 bytes | 329.00 KiB/s, done.
+Total 3 (delta 0), reused 0 (delta 0)
+remote: error: refusing to update checked out branch: refs/heads/master
+remote: error: By default, updating the current branch in a non-bare repository
+remote: is denied, because it will make the index and work tree inconsistent
+remote: with what you pushed, and will require 'git reset --hard' to match
+remote: the work tree to HEAD.
+remote:
+remote: You can set the 'receive.denyCurrentBranch' configuration variable
+remote: to 'ignore' or 'warn' in the remote repository to allow pushing into
+remote: its current branch; however, this is not recommended unless you
+remote: arranged to update its work tree to match what you pushed in some
+remote: other way.
+remote:
+remote: To squelch this message and still keep the default behaviour, set
+remote: 'receive.denyCurrentBranch' configuration variable to 'refuse'.
+To /home/ptruchon/gittest/remote/
+ ! [remote rejected] master -> master (branch is currently checked out)
+error: failed to push some refs to '/home/ptruchon/gittest/remote/'
+</code>
+  * Workaround is to checkout a temporary branch on remote:<code bash>
+~/gittest/remote$ git checkout -b tmp
+Switched to a new branch 'tmp'
+</code>
+  * Then push the local changes to remote:<code bash>
+~/gittest/local$ git push origin master
+Enumerating objects: 5, done.
+Counting objects: 100% (5/5), done.
+Delta compression using up to 4 threads
+Compressing objects: 100% (3/3), done.
+Writing objects: 100% (3/3), 329 bytes | 329.00 KiB/s, done.
+Total 3 (delta 0), reused 0 (delta 0)
+To /home/ptruchon/gittest/remote/
+e5ccde..b7d9105  master -> master
+</code>
+  * Check status and log from local:<code bash>
+~/gittest/local$ git status
+On branch master
+Your branch is up to date with 'origin/master'.
+nothing to commit, working tree clean
+~/gittest/local$ git log
+commit b7d91058fed9fe64c96525a3d0bef56c682ade68 (HEAD -> master, origin/master, origin/HEAD)
+Author: Patrick Truchon <patoo@rbox.me>
+Date:   Sun Dec 26 10:45:41 2021 -0800
+    changed file1.txt from local
+commit 0e5ccdedd1c9188996aadad3a8e2be5a319ab789
+Author: Patrick Truchon <patoo@rbox.me>
+Date:   Sun Dec 26 10:21:24 2021 -0800
+    initial commit on remote
+</code>
+  * On remote, checkout master and delete the temporary branch<code bash>
+~/gittest/remote$ git checkout master; git branch -d tmp
+Switched to branch 'master'
+Deleted branch tmp (was 0e5ccde).
+</code>
+  * Status and log both look good:<code bash>
+git status
+On branch master
+nothing to commit, working tree clean
+git log
+commit b7d91058fed9fe64c96525a3d0bef56c682ade68 (HEAD -> master)
+Author: Patrick Truchon <patoo@rbox.me>
+Date:   Sun Dec 26 10:45:41 2021 -0800
+    changed file1.txt from local
+commit 0e5ccdedd1c9188996aadad3a8e2be5a319ab789
+Author: Patrick Truchon <patoo@rbox.me>
+Date:   Sun Dec 26 10:21:24 2021 -0800
+    initial commit on remote
+</code>
+  * But group ownership of the modified file wasn't preserved<code bash>
+~/gittest/remote$ ls -l
+total 24
+-rwxrwxr-x 1 ptruchon ptruchon 50 Dec 26 12:01 file1.txt
+-rwxrwx--- 1 ptruchon www-data 26 Dec 26 10:20 file2.txt
+</code>