#38 Compile with musl libc

[Felix Janda]

http://musl-libc.org

[Mark Lord]

The #include changes have now been applied to my source tree, but I'm not so sure about changing loff_t to off_t. With that change, the size of the type may become too small on a 64-bit machine.

Can you explain why you want that line to change, and why it doesn't break anything?

Thanks.

[Felix Janda]

Thanks for applying the include changes.

off_t is here 64bit on all systems because _FILE_OFFSET_BITS is set to 64.

musl needs to be asked more directly to define the legacy loff_t.

(off_t is always 64bit on 64bit systems. However on some 32bit systems it might only be 32bit if LFS is not enabled, e.g. via _FILE_OFFSET_BITS.)

[Mark Lord]

I think using off_t instead of the correct loff_t would break 32-bit systems. The kernel always defines loff_t as u64, and the sys_fallocate() syscall needs loff_t for a parameter.

So.. I'll just have hdparm use "unsigned long long" instead, to keep everything happy.

Thanks.

[Felix Janda]

Thanks for fixing this!

Please read http://users.suse.com/~aj/linux_lfs.html

tl;dr, if _FILE_OFFSET_BITS=64, everything is 64bit on any system.