Re: mmap is broken for MIPS64 n32 and o32 abis

["Maciej W. Rozycki" <macro@linux-mips.org>]

On Fri, 19 Sep 2008, Dinar Temirbulatov wrote:

>          mmptr = (unsigned short *)mmap((void *)0, 0x1000,
>                              PROT_READ | PROT_WRITE, MAP_SHARED,
>                              mmh, 0xb6000000);

 Ah, so it is the file offset you are concerned about.  Fair enough then.  
Obviously the non-LFS 32-bit variation has to sign-extend the offset as
this is how the off_t type has been defined in this case, though it is
interesting to note that the kernel treats this argument as unsigned while
the C library API defines it as signed and there is no range checking in
between.  Hmm...

  Maciej