ishwarbb
133909c8f6
Add CacheSize= option to [Resolve] section of resolved.conf to allow configuring the maximum number of entries in the per-scope DNS cache. The default remains 4096 entries. Setting this to 0 disables caching (similar to Cache=no). CacheSize= is only read when Cache=yes or Cache=no-negative. When Cache=no, caching is fully disabled regardless of CacheSize=. Changes: - Add cache_size field to Manager struct - Parse CacheSize= from resolved.conf via gperf - Thread cache_size through dns_cache_put() and helper functions - Replace hard-coded CACHE_MAX with the configurable cache_size - When cache_size is 0 or Cache=no, flush cache and skip caching - Add man page documentation for the new option - Add unit tests for cache size enforcement Co-developed-by: Claude <claude@anthropic.com>
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