[osiris-devel] 64 Bit Transparency?

[Thomas Jones]

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Hello,

I am by no means an experienced developer (actually I am just starting my CS 
degree); so I am throwing this question as a learning experience for myself.

I did a system call trace of osirismd to find all the neccessary files to 
place it into a jail. Anyways, i noticed that most(not all) system calls are 
explicitly declared as 64 bit.

Now, again with my limited knowledge; i was under the impression that the 
functions were transparent to the API via _FILE_OFFSET_BITS.

Next, I noticed as well that some calls were not using the explicit 64 bit 
structure:

open("/var/lib/osiris/osirismd.conf", O_RDONLY) = 9

and yet the following attribute call is in large file structure:

fstat64(9, {st_mode=S_IFREG|0600, st_size=221, ...}) = 0

Is there a reason why --- maybe certain platforms need this?

Thanks for your help.
Thomas
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