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Re^2: Detecting whether two pathes refer to the same file

by rovf (Priest)
on Sep 10, 2010 at 09:50 UTC ( #859616=note: print w/replies, xml ) Need Help??


in reply to Re: Detecting whether two pathes refer to the same file
in thread Detecting whether two pathes refer to the same file

Thank you for the quick reply!
Perls are normally compiled with 64-bit file access, and you might need that for this trick too, because it makes inode numbers wider.
In what way could this affect me? I just have to compare the inode numbers (and device numbers, as you pointed out), as they are returned from stat,isn't it?
Device numbers might not be constant over a reboot.
As I apply the call to stat to both variables in succession, there is no possibility to be interrupted by a reboot.

-- 
Ronald Fischer <ynnor@mm.st>

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Re^3: Detecting whether two pathes refer to the same file
by wazoox (Prior) on Sep 10, 2010 at 10:46 UTC
    In what way could this affect me? I just have to compare the inode numbers (and device numbers, as you pointed out), as they are returned from stat,isn't it?

    If your perl doesn't support 64 bits inodes, stat will fail in weird ways; in the worst case, it could return erroneous inodes and wrongly state different files as the same.

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