[pacman-dev] Checking free space before transaction

[Allan McRae]

On 12/11/10 12:22, Nezmer wrote:
> On Fri, Nov 12, 2010 at 11:07:14AM +1000, Allan McRae wrote:
>> So, looking into this further:
>>
>> getmntent:
>>     used by glibc, uclibc, cygwin
>>
>> getmntinfo with statfs:
>>     used by bsd4.4  (FreeBSD, OpenBSD, OSX)
>>
>> getmntinfo with statvfs:
>>     NetBSD
>>
>> I can work with that...  the mount point struct can hold a statfs or
>> statvfs object depending on what function we are using. Given the
>> entries that we need to access are available in both structs, the
>> rest should be transparent.
>>
>> So what I need to do is:
>> 1) figure out how to distinguish between the two getmntinfo versions...
>
> Wouldn't this work?:
>
> #ifndef __NetBSD__
> /* use statfs */
> #else
> /* use statvfs */
> #endif
>

Sure, but that would be broken if some other BSD uses the same method as 
NetBSD so we are better off just doing the check properly in the first 
place.