RFR: 8229872: (fs) Increase buffer size used with getmntent

[Alan Bateman]

On 06/09/2019 14:59, Vladimir Kempik wrote:
> Hello
>
> Thanks for comments
>
> updated webrev including all mentioned things.
>
> http://cr.openjdk.java.net/~vkempik/8229872/webrev.08/
>
I think this is getting better. One thing that would help is a pointer 
to documentation that confirms that getmntent_r may realloc buf as I 
don't see this in the man page.

Some specific comments on webrev.08

LinuxFileSystem.java L98 - this sets buflen to maxLineSize before 
incrementing maxLineSize, should be "buflen = maxLineSize + 1". I'm also 
wondering if maxLineSize should be an int rather than a long as the 
native code has to cast it to a size_t or native int.

LinuxNativeDispatcher.c - I would prefer not to have both buflen and 
bufLen. No one type will work for all cases so I think you have to case 
to size_t for malloc and int for getmntent_r.

-Alan