Subject: Re: [PATCH v1 4/4] builtin/unpack-objects.c: change xwrite to write_in_full to allow large sizes.

From: Junio C Hamano <[email-masked]>
Date: Mon, 26 Feb 2024 15:56:09 -0800

"Randall S. Becker" <[email-masked]> writes:

> From: "Randall S. Becker" <[email-masked]>
>
> 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.
>
> Signed-off-by: Randall S. Becker <[email-masked]>
> ---
>  builtin/unpack-objects.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

The same comment as [1/4].  Perhaps your MAX_IO_SIZE should be tuned
downwards, so that xwrite() works as it was designed to work.

> diff --git a/builtin/unpack-objects.c b/builtin/unpack-objects.c
> index e0a701f2b3..6935c4574e 100644
> --- a/builtin/unpack-objects.c
> +++ b/builtin/unpack-objects.c
> @@ -680,7 +680,7 @@ int cmd_unpack_objects(int argc, const char **argv, const char *prefix UNUSED)
>  
>  	/* Write the last part of the buffer to stdout */
>  	while (len) {
> -		int ret = xwrite(1, buffer + offset, len);
> +		int ret = write_in_full(1, buffer + offset, len);
>  		if (ret <= 0)
>  			break;
>  		len -= ret;