Porting Advice

Porting the programs to other Unix systems

Use a compiler that has 64 bit off_t type
32bits only gets you as far as 4GB, which is much too small for modern disks. The programs need a 64bit off_t type.
Use a libc that supports O_LONGFILE and lseek64
These are common extensions to the file I/O API.
Check that your system supports shared MAP_ANONYMOUS mmaps
If it doesn't define MAP_ANONYMOUS, open and map /dev/zero instead. If you don't have shared anonymous maps, you can back the mmap with a file, which may be on ramdisk. If you don't have any of the above, replace the mmap and msync with writes to the reply pipe.

Valid HTML 4.01! Valid CSS!

Peter Benie <peterb@chiark.greenend.org.uk>
Linux RAID