Open-source Languages & Tools for z/OS

As we’ve implemented Git on z/OS right now, extended file attributes can be lost if you switch branches. You can maintain them with a post-checkout hook. The hook we’re using on the RDL project is:

main:

   address syscall "chdir" toplevel()
   call bpxwunix "find . -type d",,stdout.

   do # = 1 to stdout.0
      if \starts("./.git", stdout.#) then
         "extattr -Fnl" stdout.#"/* 2>/dev/null"
   end

exit 0

It sets the nl attribute recursively on all files that are not in .git directories.

Edit: The toplevel function returns the result of a “git rev-parse --show-toplevel” command. The starts function returns a boolean indicating whether the second string starts with the first.

Hello, Tony!
I’ve tried to replicate your issue but attributes look intact after switching branches in my case.

$ ls -EH tests/
total 336
drwxr-xr-x              2 TS5651   PDUSER      8192 Dec 11 05:21 ./
drwxr-xr-x             15 TS5651   PDUSER      8192 Dec 11 05:24 ../
-rw-r--r--  --s- ----   1 TS5651   PDUSER       274 Dec 11 05:21 .gitignore
-rw-r--r--  --s- ----   1 TS5651   PDUSER       555 Dec 11 05:21 Makefile.am
-rw-r--r--  --s- ----   1 TS5651   PDUSER      1115 Dec 11 05:21 tst-dlopen.c
...
$ extattr -Fnl tests/*
$ ls -EH tests/
total 336
drwxr-xr-x              2 TS5651   PDUSER      8192 Dec 11 05:21 ./
drwxr-xr-x             15 TS5651   PDUSER      8192 Dec 11 05:24 ../
-rw-r--r--  --s- ----   1 TS5651   PDUSER       274 Dec 11 05:21 .gitignore
-rw-r--r--  --s- nl     1 TS5651   PDUSER       555 Dec 11 05:21 Makefile.am
-rw-r--r--  --s- nl     1 TS5651   PDUSER      1115 Dec 11 05:21 tst-dlopen.c
...
$ git checkout master_zos
Switched to branch 'master_zos'
Your branch is up-to-date with 'origin/master_zos'.
$ git checkout master
Switched to branch 'master'
Your branch is up-to-date with 'origin/master'.
$ ls -EH tests/
total 336
drwxr-xr-x              2 TS5651   PDUSER      8192 Dec 11 05:21 ./
drwxr-xr-x             15 TS5651   PDUSER      8192 Dec 11 05:32 ../
-rw-r--r--  --s- ----   1 TS5651   PDUSER       274 Dec 11 05:21 .gitignore
-rw-r--r--  --s- nl     1 TS5651   PDUSER       555 Dec 11 05:21 Makefile.am
-rw-r--r--  --s- nl     1 TS5651   PDUSER      1115 Dec 11 05:21 tst-dlopen.c
...
$ extattr -FNA tests/*
$ ls -EH tests/
total 336
drwxr-xr-x              2 TS5651   PDUSER      8192 Dec 11 05:21 ./
drwxr-xr-x             15 TS5651   PDUSER      8192 Dec 11 05:32 ../
-rw-r--r--  --s- ----   1 TS5651   PDUSER       274 Dec 11 05:21 .gitignore
-rw-r--r--  --s- ----   1 TS5651   PDUSER       555 Dec 11 05:21 Makefile.am
-rw-r--r--  --s- ----   1 TS5651   PDUSER      1115 Dec 11 05:21 tst-dlopen.c
...
$ git version
git version 2.3.5_zos_b014

Could you please specify exact steps to reproduce your issue, your git and bash versions so we can reproduce your case correctly. Thanks

Hi, uxus - if that is indeed your name. To recreate the problem, switch to master_zos, delete a file that is also on master, then switch back to master. Thanks!

Hi again, Danil. I’ve found another way to reproduce the issue:

1. echo 'data' > testfile
2. chtag -tc IBM-1047 testfile
3. extattr -Fnl testfile
4. ls -H - note that the nl attribute is on
5. git add testfile
6. git stash
7. git stash pop
8. ls -H - note that the nl attribute is off