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| author | Nick Mathewson <nickm@torproject.org> | 2006-12-07 15:07:33 +0000 |
|---|---|---|
| committer | Nick Mathewson <nickm@torproject.org> | 2006-12-07 15:07:33 +0000 |
| commit | e6c467fe07163d44dc3b62007f09b6b95a572c28 (patch) | |
| tree | 836040578038d3220ce159341f1ca906a49099ef /src | |
| parent | 97e5e78afd8acba67abc4a12d997ee81a8def0f7 (diff) | |
| download | tor-e6c467fe07163d44dc3b62007f09b6b95a572c28.tar.gz tor-e6c467fe07163d44dc3b62007f09b6b95a572c28.zip | |
r11454@Kushana: nickm | 2006-12-07 10:07:24 -0500
Apparently, we actually hit the nasty mmap-then-unlink behavior. Fix it.
svn:r9039
Diffstat (limited to 'src')
| -rw-r--r-- | src/or/routerlist.c | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/src/or/routerlist.c b/src/or/routerlist.c index 0745bc5a28..b87c3fa2b9 100644 --- a/src/or/routerlist.c +++ b/src/or/routerlist.c @@ -237,7 +237,7 @@ router_rebuild_store(int force) or_options_t *options; size_t fname_len; smartlist_t *chunk_list = NULL; - char *fname = NULL; + char *fname = NULL, *fname_tmp = NULL; int r = -1, i; off_t offset = 0; smartlist_t *old_routers, *routers; @@ -255,7 +255,11 @@ router_rebuild_store(int force) options = get_options(); fname_len = strlen(options->DataDirectory)+32; fname = tor_malloc(fname_len); + fname_tmp = tor_malloc(fname_len); tor_snprintf(fname, fname_len, "%s/cached-routers", options->DataDirectory); + tor_snprintf(fname_tmp, fname_len, "%s/cached-routers.tmp", + options->DataDirectory); + chunk_list = smartlist_create(); old_routers = smartlist_create(); @@ -284,17 +288,22 @@ router_rebuild_store(int force) smartlist_add(chunk_list, c); }); } - if (write_chunks_to_file(fname, chunk_list, 1)<0) { + if (write_chunks_to_file(fname_tmp, chunk_list, 1)<0) { log_warn(LD_FS, "Error writing router store to disk."); goto done; } /* Our mmap is now invalid. */ if (routerlist->mmap_descriptors) { tor_munmap_file(routerlist->mmap_descriptors); - routerlist->mmap_descriptors = tor_mmap_file(fname); - if (! routerlist->mmap_descriptors) - log_warn(LD_FS, "Unable to mmap new descriptor file at '%s'.",fname); } + if (replace_file(fname_tmp, fname)<0) { + log_warn(LD_FS, "Error replacing old router store."); + goto done; + } + + routerlist->mmap_descriptors = tor_mmap_file(fname); + if (! routerlist->mmap_descriptors) + log_warn(LD_FS, "Unable to mmap new descriptor file at '%s'.",fname); offset = 0; for (i = 0; i < 2; ++i) { |