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sysext: support distribution-independent extensions using ID=_any

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A sysext image that merely contains static binaries has no dependency
on the host distribution and should be able to be used anywhere.
Support the special '_any' value for the ID field in the extension to
opt-out of ID and VERSION_ID/SYSEXT_LEVEL matching.

See https://github.com/systemd/systemd/issues/24061
This commit is contained in:
Kai Lueke
2022-08-15 10:51:01 +02:00
parent 78fa2f91d2
commit ab4d43c54e
4 changed files with 21 additions and 4 deletions
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src/shared/extension-release.c
+8 -1
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@@ -50,11 +50,18 @@ int extension_release_validate(
extension_release_id = strv_env_pairs_get(extension_release, "ID");
if (isempty(extension_release_id)) {
log_debug("Extension '%s' does not contain ID in extension-release but requested to match '%s'",
log_debug("Extension '%s' does not contain ID in extension-release but requested to match '%s' or be '_any'",
name, host_os_release_id);
return 0;
}
/* A sysext with no host OS dependency (static binaries or scripts) can match
* '_any' host OS, and VERSION_ID or SYSEXT_LEVEL are not required anywhere */
if (streq(extension_release_id, "_any")) {
log_debug("Extension '%s' matches '_any' OS.", name);
return 1;
}
if (!streq(host_os_release_id, extension_release_id)) {
log_debug("Extension '%s' is for OS '%s', but deployed on top of '%s'.",
name, extension_release_id, host_os_release_id);