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| author | Nick Mathewson <nickm@torproject.org> | 2017-11-21 12:36:32 -0500 |
|---|---|---|
| committer | Nick Mathewson <nickm@torproject.org> | 2017-11-21 12:36:32 -0500 |
| commit | ea13a47791c1a6b50fed27322a073c54868ac738 (patch) | |
| tree | cd1de0fb6d6ed7ec2fbc7c1a3a89701ad348a9ab | |
| parent | c8ee12b2e8108658d647aedb92885311291b6f71 (diff) | |
| download | tor-ea13a47791c1a6b50fed27322a073c54868ac738.tar.gz tor-ea13a47791c1a6b50fed27322a073c54868ac738.zip | |
add an explanatory comment about the error codes
| -rw-r--r-- | src/or/conscache.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/or/conscache.c b/src/or/conscache.c index 4919dba3d2..33a5495974 100644 --- a/src/or/conscache.c +++ b/src/or/conscache.c @@ -539,6 +539,10 @@ consensus_cache_rescan(consensus_cache_t *cache) map = storage_dir_map_labeled(cache->dir, fname, &labels, &body, &bodylen); if (! map) { + /* The ERANGE error might come from tor_mmap_file() -- it means the file + * was empty. EINVAL might come from ..map_labeled() -- it means the + * file was misformatted. In both cases, we should just delete it. + */ if (errno == ERANGE || errno == EINVAL) { log_warn(LD_FS, "Found %s file %s in consensus cache; removing it.", errno == ERANGE ? "empty" : "misformatted", |