tor-commits December 2017

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2422 discussions

[tor/release-0.3.2] Merge remote-tracking branch 'public/bug24099_031' into maint-0.3.1
by nickm＠torproject.org 11 Dec '17

11 Dec '17

commit 828333e38cd45c6af4931c7158b5d007fc2876e7 Merge: d2031f2c6 ea13a4779 Author: Nick Mathewson <nickm(a)torproject.org> Date: Mon Dec 11 16:48:44 2017 -0500 Merge remote-tracking branch 'public/bug24099_031' into maint-0.3.1 changes/bug24099 | 4 ++++ src/common/storagedir.c | 25 +++++++++++++++++++++---- src/or/conscache.c | 17 ++++++++++++++--- 3 files changed, 39 insertions(+), 7 deletions(-)

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[tor/master] Merge branch 'maint-0.3.2'
by nickm＠torproject.org 11 Dec '17

11 Dec '17

commit abcc7032ce9d1c272a6ee1d39e3851b410b41ac6 Merge: 3b2f4d139 bfc9be4c7 Author: Nick Mathewson <nickm(a)torproject.org> Date: Mon Dec 11 16:50:48 2017 -0500 Merge branch 'maint-0.3.2'

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[tor/release-0.3.1] Merge branch 'maint-0.3.1' into release-0.3.1
by nickm＠torproject.org 11 Dec '17

11 Dec '17

commit 74ce41d4d4ca12a65813b18e7d6a1c61ee3cf14a Merge: 2edad42fd f7b41bcdf Author: Nick Mathewson <nickm(a)torproject.org> Date: Mon Dec 11 16:50:48 2017 -0500 Merge branch 'maint-0.3.1' into release-0.3.1 changes/bug24086 | 7 +++++++ changes/bug24099 | 4 ++++ src/common/storagedir.c | 25 +++++++++++++++++++++---- src/or/conscache.c | 17 ++++++++++++++--- src/or/consdiffmgr.c | 13 +++++++++++-- 5 files changed, 57 insertions(+), 9 deletions(-)

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[tor/master] Merge branch 'bug24086_031' into maint-0.3.1
by nickm＠torproject.org 11 Dec '17

11 Dec '17

commit f7b41bcdf0d8d3c7ac289d0cb5551988e6ff6b85 Merge: 828333e38 68c21860e Author: Nick Mathewson <nickm(a)torproject.org> Date: Mon Dec 11 16:49:01 2017 -0500 Merge branch 'bug24086_031' into maint-0.3.1 changes/bug24086 | 7 +++++++ src/or/consdiffmgr.c | 13 +++++++++++-- 2 files changed, 18 insertions(+), 2 deletions(-)

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[tor/release-0.3.1] add an explanatory comment about the error codes
by nickm＠torproject.org 11 Dec '17

11 Dec '17

commit ea13a47791c1a6b50fed27322a073c54868ac738 Author: Nick Mathewson <nickm(a)torproject.org> Date: Tue Nov 21 12:36:32 2017 -0500 add an explanatory comment about the error codes --- src/or/conscache.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/src/or/conscache.c b/src/or/conscache.c index 4919dba3d..33a549597 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",

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[tor/maint-0.3.2] Merge remote-tracking branch 'public/bug24099_031' into maint-0.3.1
by nickm＠torproject.org 11 Dec '17

11 Dec '17

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[tor/maint-0.3.2] Merge branch 'bug24086_031' into maint-0.3.1
by nickm＠torproject.org 11 Dec '17

11 Dec '17

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[tor/release-0.3.1] In storagedir, take more care with errno on empty or mislabeled file
by nickm＠torproject.org 11 Dec '17

11 Dec '17

commit cabcb752d7ecc2d16e6cb630b3de0684b4f97ec5 Author: Nick Mathewson <nickm(a)torproject.org> Date: Mon Nov 20 10:10:13 2017 -0500 In storagedir, take more care with errno on empty or mislabeled file Required for 24099 fix -- we won't be able to act based on errno unless we can trust it. --- src/common/storagedir.c | 25 +++++++++++++++++++++---- 1 file changed, 21 insertions(+), 4 deletions(-) diff --git a/src/common/storagedir.c b/src/common/storagedir.c index 31933f64c..c471ea911 100644 --- a/src/common/storagedir.c +++ b/src/common/storagedir.c @@ -187,14 +187,19 @@ storage_dir_get_usage(storage_dir_t *d) return d->usage; } -/** Mmap a specified file within d. */ +/** Mmap a specified file within d. + * + * On failure, return NULL and set errno as for tor_mmap_file(). */ tor_mmap_t * storage_dir_map(storage_dir_t *d, const char *fname) { char *path = NULL; tor_asprintf(&path, "%s/%s", d->directory, fname); tor_mmap_t *result = tor_mmap_file(path); + int errval = errno; tor_free(path); + if (result == NULL) + errno = errval; return result; } @@ -364,6 +369,10 @@ storage_dir_save_labeled_to_file(storage_dir_t *d, * the data's size into *sz_out. On success, also return a tor_mmap_t * object whose contents should not be used -- it needs to be kept around, * though, for as long as data_out is going to be valid. + * + * On failure, set errno as for tor_mmap_file() if the file was missing or + * empty, and set errno to EINVAL if the file was not in the labeled + * format expected. */ tor_mmap_t * storage_dir_map_labeled(storage_dir_t *dir, @@ -373,13 +382,20 @@ storage_dir_map_labeled(storage_dir_t *dir, size_t *sz_out) { tor_mmap_t *m = storage_dir_map(dir, fname); - if (! m) + int errval; + if (! m) { + errval = errno; goto err; + } const char *nulp = memchr(m->data, '\0', m->size); - if (! nulp) + if (! nulp) { + errval = EINVAL; goto err; - if (labels_out && config_get_lines(m->data, labels_out, 0) < 0) + } + if (labels_out && config_get_lines(m->data, labels_out, 0) < 0) { + errval = EINVAL; goto err; + } size_t offset = nulp - m->data + 1; tor_assert(offset <= m->size); *data_out = (const uint8_t *)(m->data + offset); @@ -388,6 +404,7 @@ storage_dir_map_labeled(storage_dir_t *dir, return m; err: tor_munmap_file(m); + errno = errval; return NULL; }

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[tor/release-0.3.1] Add another assertion to check for 24086 root causes
by nickm＠torproject.org 11 Dec '17

11 Dec '17

commit 68c21860e32ca04d77c2bfbf7576b96de5110f59 Author: Nick Mathewson <nickm(a)torproject.org> Date: Mon Nov 20 11:04:44 2017 -0500 Add another assertion to check for 24086 root causes In cdm_diff_ht_set_status(), we shouldn't have been allowing the status CDM_DIFF_PRESENT to be set if there wasn't actually a handle. --- src/or/consdiffmgr.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/src/or/consdiffmgr.c b/src/or/consdiffmgr.c index 8c25ff201..c5f55b6f3 100644 --- a/src/or/consdiffmgr.c +++ b/src/or/consdiffmgr.c @@ -283,6 +283,10 @@ cdm_diff_ht_set_status(consensus_flavor_t flav, int status, consensus_cache_entry_handle_t *handle) { + if (handle == NULL) { + tor_assert_nonfatal(status != CDM_DIFF_PRESENT); + } + struct cdm_diff_t search, *ent; memset(&search, 0, sizeof(cdm_diff_t)); search.flavor = flav;

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[tor/release-0.3.1] Merge remote-tracking branch 'public/bug24099_031' into maint-0.3.1
by nickm＠torproject.org 11 Dec '17

11 Dec '17

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