Re: Can't hardlink in different dirs. (BUG#826)

Brandon S. Allbery KF8NH (allbery@kf8nh.apk.net)
Fri, 03 Dec 1999 19:30:45 -0500


In message <Pine.LNX.4.10.9912032047110.902-100000@alpha.random>, Andrea
Arcang
eli writes:
+-----
| then. It's a namespace issue. If I put my inode in my directory it must
| not finish into /tmp after some time by somebody that has nothing to do
| with me.
+--->8

*bzzzt*

"Namespace issue"? Perhaps you should learn some Unix before declaring how
its filesystem namespace works.... The primary namespace is <dev,inumber>.
Directory entries map names to those (dev being implicit), and the only
reason it's got any restrictions is that you can't write an fsck that can
cope with e.g. hard links to directories.

You don't "put" inodes in directories. You link to them --- implicitly by
creation, or explicitly with the link() syscall --- and unlink from them.
But inodes are not dependent on directory entries; that's how
unlink-after-open works to create anonymous temporary files which will stick
around as long as *any* reference to them (link, open file, current
directory, etc.) exists.

-- 
brandon s. allbery	   os/2,linux,solaris,perl	allbery@kf8nh.apk.net
system administrator	   kthkrb,heimdal,gnome,rt	  allbery@ece.cmu.edu
carnegie mellon / electrical and computer engineering			kf8nh
    We are Linux. Resistance is an indication that you missed the point.

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