bug#9157: [PATCH] dd: sparse conv flag

[Pádraig Brady]

On 02/27/2012 03:50 PM, Paul Eggert wrote:
> Thanks for looking into this!  Some nits:
> 
> On 02/27/2012 07:20 AM, Pádraig Brady wrote:
>> +is_nul (const char* buf, size_t bufsize)
> 
> The usual spacing style is "const char *buf", since the
> "*" really belongs to the "buf" in C.
> 
>> +  memset (obuf + output_blocksize, 1, sizeof (uintptr_t));
> 
> This constraint on OUTPUT_BLOCK_SLOP should be documented, thus:
> 
> #define OUTPUT_BLOCK_SLOP MAX (sizeof (uintptr_t), page_size - 1)
> 
>> +  /* write sentinel to slop after the buffer,
>> +     to allow efficient checking for NUL blocks.  */
> 
> Initial cap for sentence.  The next comment has a similar issue.
> 

Thanks Paul. Adjustments made.

I'm also thinking I should warn once when
the new lseek fails, but only after the fall back
write() succeeds.

cheers,
Pádraig.