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Re: problems using large file systems



Hi,

On Fri, 2003-11-14 at 00:29, amitm atvideo com wrote:

> rw-r--r--    1 amitm    amitm    2147491330 Nov 13 10:16 
> /home/amitm/storage/cam_n2_q1/atvdatacam_n2_q1.dat
> 
> I write a simple program to do the basic file I/O but I hit a snag doing 
> the seek.
> 
> int main(void)
> {
>     int fd;
>     int result;
...
>     result = lseek64(fd,2147483650,SEEK_SET);

Umm, lseek64 returns a 64-bit result.  "result" is a 32-bit variable.

This is *precisely* the sort of programming error which resulted in the
LFS spec disabling the opening of >2GB files in the first place.  Any
applications assuming that an off_t fits in an int will break if off_t
for the file is larger than 2GB.

Try off_t or loff_t as the type for "result" and see if that works any
better!

--Stephen




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