"Randall S. Becker" <the.n.e.key@xxxxxxxxx> writes:
> From: "Randall S. Becker" <rsbecker@xxxxxxxxxxxxx>
>
> This change is required because some platforms do not support file writes of
> arbitrary sizes (e.g, NonStop). xwrite ends up truncating the output to the
> maximum single I/O size possible for the destination device. The result of
> write_in_full() is also passed to the caller, which was previously ignored.
This one smells more like a theoretical issue than realistic, in
that these writes are done only with .hexsz (either 40 or 64) bytes
oid string, or a single byte "\n", for either of which it is hard to
imagine that it is even remotely close to platform "maximum single
I/O size".
But we'd need to look for the error return anyway, so switching to
write_in_full() while we are doing so is also good.
> Signed-off-by: Randall S. Becker <rsbecker@xxxxxxxxxxxxx>
> ---
> builtin/repack.c | 9 +++++++--
> 1 file changed, 7 insertions(+), 2 deletions(-)
>
> diff --git a/builtin/repack.c b/builtin/repack.c
> index ede36328a3..932d24c60b 100644
> --- a/builtin/repack.c
> +++ b/builtin/repack.c
> @@ -307,6 +307,7 @@ static int write_oid(const struct object_id *oid,
> struct packed_git *pack UNUSED,
> uint32_t pos UNUSED, void *data)
> {
> + int err;
> struct child_process *cmd = data;
>
> if (cmd->in == -1) {
> @@ -314,8 +315,12 @@ static int write_oid(const struct object_id *oid,
> die(_("could not start pack-objects to repack promisor objects"));
> }
>
> - xwrite(cmd->in, oid_to_hex(oid), the_hash_algo->hexsz);
> - xwrite(cmd->in, "\n", 1);
> + err = write_in_full(cmd->in, oid_to_hex(oid), the_hash_algo->hexsz);
> + if (err <= 0)
> + return err;
> + err = write_in_full(cmd->in, "\n", 1);
> + if (err <= 0)
> + return err;
> return 0;
> }
