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

Message ID 20240226220539.3494-5-randall.becker@nexbridge.ca (mailing list archive)
State Superseded
Headers show
Series Change xwrite() to write_in_full() in builtins. | expand

Commit Message

Randall S. Becker Feb. 26, 2024, 10:05 p.m. UTC
From: "Randall S. Becker" <rsbecker@nexbridge.com>

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 <rsbecker@nexbridge.com>
---
 builtin/unpack-objects.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Junio C Hamano Feb. 26, 2024, 11:56 p.m. UTC | #1
"Randall S. Becker" <the.n.e.key@gmail.com> writes:

> From: "Randall S. Becker" <rsbecker@nexbridge.com>
>
> 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 <rsbecker@nexbridge.com>
> ---
>  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;
Randall S. Becker Feb. 27, 2024, 12:18 a.m. UTC | #2
On Monday, February 26, 2024 6:56 PM, Junio C Hamano wrote:
>"Randall S. Becker" <the.n.e.key@gmail.com> writes:
>
>> From: "Randall S. Becker" <rsbecker@nexbridge.com>
>>
>> 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 <rsbecker@nexbridge.com>
>> ---
>>  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.

I am considering undoing this one, other than ensuring that the error code
is checked and returned. The MAX_IO_SIZE is sufficient. I think the actual
fail was in the original repack.c not this one.

>
>> 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;
diff mbox series

Patch

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;