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reftable: introduce macros to allocate arrays

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Similar to the preceding commit, let's carry over macros to allocate
arrays with `REFTABLE_ALLOC_ARRAY()` and `REFTABLE_CALLOC_ARRAY()`. This
requires us to change the signature of `reftable_calloc()`, which only
takes a single argument right now and thus puts the burden on the caller
to calculate the final array's size. This is a net improvement though as
it means that we can now provide proper overflow checks when multiplying
the array size with the member size.

Convert callsites of `reftable_calloc()` to the new signature and start
using the new macros where possible.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Patrick Steinhardt
2024-02-06 07:35:27 +01:00
committed by Junio C Hamano
parent f6b58c1be4
commit b4ff12c8ee
16 changed files with 68 additions and 61 deletions
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7
reftable/writer.c
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@ -49,7 +49,7 @@ static int padded_write(struct reftable_writer *w, uint8_t *data, size_t len,
{
int n = 0;
if (w->pending_padding > 0) {
uint8_t *zeroed = reftable_calloc(w->pending_padding);
uint8_t *zeroed = reftable_calloc(w->pending_padding, sizeof(*zeroed));
int n = w->write(w->write_arg, zeroed, w->pending_padding);
if (n < 0)
return n;
@ -123,8 +123,7 @@ struct reftable_writer *
reftable_new_writer(ssize_t (*writer_func)(void *, const void *, size_t),
void *writer_arg, struct reftable_write_options *opts)
{
struct reftable_writer *wp =
reftable_calloc(sizeof(struct reftable_writer));
struct reftable_writer *wp = reftable_calloc(1, sizeof(*wp));
strbuf_init(&wp->block_writer_data.last_key, 0);
options_set_defaults(opts);
if (opts->block_size >= (1 << 24)) {
@ -132,7 +131,7 @@ reftable_new_writer(ssize_t (*writer_func)(void *, const void *, size_t),
abort();
}
wp->last_key = reftable_empty_strbuf;
wp->block = reftable_calloc(opts->block_size);
REFTABLE_CALLOC_ARRAY(wp->block, opts->block_size);
wp->write = writer_func;
wp->write_arg = writer_arg;
wp->opts = *opts;