[PATCH v3 12/22] reftable/reader: handle allocation failures in `reader_init_iter()`
- From
Patrick Steinhardt <ps@pks.im>
- Date
- Sep 30, 2024, 08:08 UTC
- Message-ID
- <9b5fd52862bf9ee4367481e285990883e8547ab4.1727680272.git.ps@pks.im>
- In-Reply-To
- <cover.1727680272.git.ps@pks.im>
Handle allocation failures in `reader_init_iter()`. This requires us to also adapt `reftable_reader_init_*_iterator()` to bubble up the new error codes. Adapt callers accordingly.
Signed-off-by: Patrick Steinhardt <ps@pks.im> --- reftable/merged.c | 4 +++- reftable/reader.c | 28 +++++++++++++++--------- reftable/reader.h | 6 ++--- reftable/reftable-reader.h | 8 +++---- t/unit-tests/t-reftable-readwrite.c | 34 +++++++++++++++++++---------- 5 files changed, 50 insertions(+), 30 deletions(-)
diff --git a/reftable/merged.c b/reftable/merged.c index 5a8ea8ae77..741f62ea63 100644 --- a/reftable/merged.c +++ b/reftable/merged.c @@ -244,7 +244,9 @@ int merged_table_init_iter(struct reftable_merged_table *mt, for (size_t i = 0; i < mt->readers_len; i++) { reftable_record_init(&subiters[i].rec, typ); - reader_init_iter(mt->readers[i], &subiters[i].iter, typ); + ret = reader_init_iter(mt->readers[i], &subiters[i].iter, typ); + if (ret < 0) + goto out; } REFTABLE_CALLOC_ARRAY(mi, 1); diff --git a/reftable/reader.c b/reftable/reader.c index 485ee085da..f696e992df 100644 --- a/reftable/reader.c +++ b/reftable/reader.c @@ -554,32 +554,37 @@ static void iterator_from_table_iter(struct reftable_iterator *it, it->ops = &table_iter_vtable; } -void reader_init_iter(struct reftable_reader *r, - struct reftable_iterator *it, - uint8_t typ) +int reader_init_iter(struct reftable_reader *r, + struct reftable_iterator *it, + uint8_t typ) { struct reftable_reader_offsets *offs = reader_offsets_for(r, typ); if (offs->is_present) { struct table_iter *ti; REFTABLE_ALLOC_ARRAY(ti, 1); + if (!ti) + return REFTABLE_OUT_OF_MEMORY_ERROR; + table_iter_init(ti, r); iterator_from_table_iter(it, ti); } else { iterator_set_empty(it); } + + return 0; } -void reftable_reader_init_ref_iterator(struct reftable_reader *r, - struct reftable_iterator *it) +int reftable_reader_init_ref_iterator(struct reftable_reader *r, + struct reftable_iterator *it) { - reader_init_iter(r, it, BLOCK_TYPE_REF); + return reader_init_iter(r, it, BLOCK_TYPE_REF); } -void reftable_reader_init_log_iterator(struct reftable_reader *r, - struct reftable_iterator *it) +int reftable_reader_init_log_iterator(struct reftable_reader *r, + struct reftable_iterator *it) { - reader_init_iter(r, it, BLOCK_TYPE_LOG); + return reader_init_iter(r, it, BLOCK_TYPE_LOG); } int reftable_reader_new(struct reftable_reader **out, @@ -689,7 +694,10 @@ static int reftable_reader_refs_for_indexed(struct reftable_reader *r, struct indexed_table_ref_iter *itr = NULL; /* Look through the reverse index. */ - reader_init_iter(r, &oit, BLOCK_TYPE_OBJ); + err = reader_init_iter(r, &oit, BLOCK_TYPE_OBJ); + if (err < 0) + goto done; + err = iterator_seek(&oit, &want); if (err != 0) goto done; diff --git a/reftable/reader.h b/reftable/reader.h index 3710ee09b4..02d10c5d37 100644 --- a/reftable/reader.h +++ b/reftable/reader.h @@ -56,9 +56,9 @@ struct reftable_reader { const char *reader_name(struct reftable_reader *r); -void reader_init_iter(struct reftable_reader *r, - struct reftable_iterator *it, - uint8_t typ); +int reader_init_iter(struct reftable_reader *r, + struct reftable_iterator *it, + uint8_t typ); /* initialize a block reader to read from `r` */ int reader_init_block_reader(struct reftable_reader *r, struct block_reader *br, diff --git a/reftable/reftable-reader.h b/reftable/reftable-reader.h index a600452b56..6a2d0b693f 100644 --- a/reftable/reftable-reader.h +++ b/reftable/reftable-reader.h @@ -46,12 +46,12 @@ void reftable_reader_incref(struct reftable_reader *reader); void reftable_reader_decref(struct reftable_reader *reader); /* Initialize a reftable iterator for reading refs. */ -void reftable_reader_init_ref_iterator(struct reftable_reader *r, - struct reftable_iterator *it); +int reftable_reader_init_ref_iterator(struct reftable_reader *r, + struct reftable_iterator *it); /* Initialize a reftable iterator for reading logs. */ -void reftable_reader_init_log_iterator(struct reftable_reader *r, - struct reftable_iterator *it); +int reftable_reader_init_log_iterator(struct reftable_reader *r, + struct reftable_iterator *it); /* returns the hash ID used in this table. */ uint32_t reftable_reader_hash_id(struct reftable_reader *r); diff --git a/t/unit-tests/t-reftable-readwrite.c b/t/unit-tests/t-reftable-readwrite.c index e1b235a5f1..acca927a2c 100644 --- a/t/unit-tests/t-reftable-readwrite.c +++ b/t/unit-tests/t-reftable-readwrite.c @@ -206,7 +206,8 @@ static void t_log_write_read(void) err = reftable_reader_new(&reader, &source, "file.log"); check(!err); - reftable_reader_init_ref_iterator(reader, &it); + err = reftable_reader_init_ref_iterator(reader, &it); + check(!err); err = reftable_iterator_seek_ref(&it, names[N - 1]); check(!err); @@ -221,8 +222,8 @@ static void t_log_write_read(void) reftable_iterator_destroy(&it); reftable_ref_record_release(&ref); - reftable_reader_init_log_iterator(reader, &it); - + err = reftable_reader_init_log_iterator(reader, &it); + check(!err); err = reftable_iterator_seek_log(&it, ""); check(!err); @@ -296,7 +297,8 @@ static void t_log_zlib_corruption(void) err = reftable_reader_new(&reader, &source, "file.log"); check(!err); - reftable_reader_init_log_iterator(reader, &it); + err = reftable_reader_init_log_iterator(reader, &it); + check(!err); err = reftable_iterator_seek_log(&it, "refname"); check_int(err, ==, REFTABLE_ZLIB_ERROR); @@ -325,7 +327,8 @@ static void t_table_read_write_sequential(void) err = reftable_reader_new(&reader, &source, "file.ref"); check(!err); - reftable_reader_init_ref_iterator(reader, &it); + err = reftable_reader_init_ref_iterator(reader, &it); + check(!err); err = reftable_iterator_seek_ref(&it, ""); check(!err); @@ -376,7 +379,8 @@ static void t_table_read_api(void) err = reftable_reader_new(&reader, &source, "file.ref"); check(!err); - reftable_reader_init_ref_iterator(reader, &it); + err = reftable_reader_init_ref_iterator(reader, &it); + check(!err); err = reftable_iterator_seek_ref(&it, names[0]); check(!err); @@ -419,7 +423,8 @@ static void t_table_read_write_seek(int index, int hash_id) } for (i = 1; i < N; i++) { - reftable_reader_init_ref_iterator(reader, &it); + err = reftable_reader_init_ref_iterator(reader, &it); + check(!err); err = reftable_iterator_seek_ref(&it, names[i]); check(!err); err = reftable_iterator_next_ref(&it, &ref); @@ -435,7 +440,8 @@ static void t_table_read_write_seek(int index, int hash_id) strbuf_addstr(&pastLast, names[N - 1]); strbuf_addstr(&pastLast, "/"); - reftable_reader_init_ref_iterator(reader, &it); + err = reftable_reader_init_ref_iterator(reader, &it); + check(!err); err = reftable_iterator_seek_ref(&it, pastLast.buf); if (err == 0) { struct reftable_ref_record ref = { 0 }; @@ -534,7 +540,8 @@ static void t_table_refs_for(int indexed) if (!indexed) reader->obj_offsets.is_present = 0; - reftable_reader_init_ref_iterator(reader, &it); + err = reftable_reader_init_ref_iterator(reader, &it); + check(!err); err = reftable_iterator_seek_ref(&it, ""); check(!err); reftable_iterator_destroy(&it); @@ -593,7 +600,8 @@ static void t_write_empty_table(void) err = reftable_reader_new(&rd, &source, "filename"); check(!err); - reftable_reader_init_ref_iterator(rd, &it); + err = reftable_reader_init_ref_iterator(rd, &it); + check(!err); err = reftable_iterator_seek_ref(&it, ""); check(!err); @@ -802,7 +810,8 @@ static void t_write_multiple_indices(void) * Seeking the log uses the log index now. In case there is any * confusion regarding indices we would notice here. */ - reftable_reader_init_log_iterator(reader, &it); + err = reftable_reader_init_log_iterator(reader, &it); + check(!err); err = reftable_iterator_seek_log(&it, ""); check(!err); @@ -858,7 +867,8 @@ static void t_write_multi_level_index(void) /* * Seeking the last ref should work as expected. */ - reftable_reader_init_ref_iterator(reader, &it); + err = reftable_reader_init_ref_iterator(reader, &it); + check(!err); err = reftable_iterator_seek_ref(&it, "refs/heads/199"); check(!err);
-- 2.46.2.852.g229c0bf0e5.dirty