[va000612]

What does this PR do?

The salt.state and salt.function orchestration states forward the roster argument to saltutil.cmd when ssh: True (added for #51158), but silently drop roster_file. salt-ssh then falls back to the default roster file, so a roster cannot be chosen at orchestration time by path.

This PR forwards roster_file next to roster in both states, documents it in both docstrings, and adds unit tests and a changelog entry.

No other code changes are needed. SSHClient._prep_ssh merges the kwargs into opts, SSHClient.sanitize_kwargs already whitelists roster_file, and salt.roster.get_roster_file reads opts["roster_file"]. saltmod.py was the only place the argument got lost.

What issues does this PR fix or reference?

Fixes #56649

Previous Behavior

roster_file passed to salt.state or salt.function with ssh: True was ignored, and the default roster file was used.

New Behavior

roster_file is passed through to the salt-ssh client, so the given roster file is used.

Merge requirements satisfied?

• Docs (docstring entries for roster_file in state() and function())
• Changelog (changelog/56649.fixed.md)
• Tests written/updated

Testing

1. Unit tests added

Both are in tests/pytests/unit/states/saltmod/:

• test_state.py::test_roster_file calls saltmod.state(..., ssh=True, roster_file="/tmp/my_roster") and asserts that saltutil.cmd received roster_file="/tmp/my_roster".
• test_function.py::test_roster_file makes the same check for saltmod.function.

Before the fix (tests added, source unchanged):

$ python -m pytest tests/pytests/unit/states/saltmod/ -k roster -v
test_function.py::test_roster_file FAILED
test_state.py::test_roster         PASSED
test_state.py::test_roster_file    FAILED
E   KeyError: 'roster_file'
2 failed, 1 passed, 35 deselected

After the fix:

$ python -m pytest tests/pytests/unit/states/saltmod/ -v
38 passed

$ python -m pytest tests/pytests/unit/states/saltmod/ tests/pytests/unit/client/ssh/ tests/pytests/unit/roster/ -q
244 passed, 22 skipped

The second command also covers the downstream SSH client and roster code, with no regressions.

2. Real master test (Salt 3008.4, throwaway master)

Setup: a throwaway master on a Photon 5.0 node in a venv (pip install salt==3008.4, started with salt-master -c /root/repro/master -d). The master config was left alone apart from adding roots to fileserver_backend and a file_roots entry for the orchestration file. The default roster path /root/repro/master/roster does not exist. A custom roster at /root/e2e/custom_roster defines target1 (127.0.0.1).

Orchestration t.sls:

run_via_ssh:
  salt.state:
    - tgt: target1
    - ssh: True
    - roster_file: /root/e2e/custom_roster
    - sls: mystate

Command, run once on the unpatched module and once with this PR's saltmod.py overlaid on the venv (master restarted in between):

salt-run -c /root/repro/master state.orchestrate t -l debug 2>&1 \
  | grep -iE "roster|No matching targets|target1|Permission denied|Connection refused"

Before the fix (unpatched 3008.4), roster_file is dropped and the default roster is used:

[ERROR   ] Can't access roster for backend flat: Roster file "/root/repro/master/roster" not found
[ERROR   ] No matching targets found in roster.

After the fix (patched saltmod.py), the custom roster is compiled and target1 resolves:

[DEBUG   ] compile template: /root/e2e/custom_roster
[DEBUG   ] LazyLoaded roster_matcher.targets
[DEBUG   ] Adding minions for job 20261105050827363614: ['target1']
[ERROR   ] {'out': 'highstate', 'ret': {'target1': 'no such identity: /root/e2e/key: No such file or directory\nroot@127.0.0.1: Permission denied (...)'}}

The run then fails at the SSH step only because the key /root/e2e/key was intentionally not created. The point of the test is that target resolution now uses the custom roster.

Not tested

• A full orchestration run through to a successful state apply over SSH (it needs an SSH key and a Python on the target).
• pre-commit: three hooks failed for tooling reasons in my environment. Lint Salt and Lint Tests could not install filelock==4.2.6 from my package mirror, where the newest version is 4.2.4. Check Changelog Entries could not import virustotal3. The other hooks passed. I committed with --no-verify, so please rely on CI for the lint and changelog checks.
• Salt API: when __disable_custom_roster is set, roster_file is still restricted to the master's configured rosters directories (existing behaviour, unchanged).

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