Messages in this thread | | | Subject | Re: udev and devfs - The final word | From | Jeremy Maitin-Shepard <> | Date | Sun, 04 Jan 2004 21:12:22 -0500 |
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viro@parcelfarce.linux.theplanet.co.uk writes:
> On Sun, Jan 04, 2004 at 08:43:27PM -0500, Jeremy Maitin-Shepard wrote: >> Unfortunately, programs such as tar depend on inode numbers of distinct >> files being distinct even when the file is not open over a period of >> several minutes/seconds. This is needed to avoid dumping hard links >> more than once. Furthermore, there is no efficient way to write >> programs such as tar without depending on this capability. Thus, if >> st_ino cannot be used reliably for this purpose, it would be useful for >> there to be a system call for retrieving a true >> unique-within-the-filesystem identifier for the file.
> No such thing. It's not the matter of having a syscall to extract such > identifier - it's that on a lot of filesystems (including many common Unix > ones) there's nothing that would qualify.
Even if the files in question aren't being modified, created, deleted, etc.? Even if nothing on the filesystem is being modified, created, deleted, etc.?
> [snip]
-- Jeremy Maitin-Shepard - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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