Many things. An open file descriptor refers to the inode.
On Mon, Mar 30, 2020 at 10:18 AM aitor_czr <aitor_...@gnuinos.org> wrote: > Hi, > On 30/3/20 15:46, Simon Hobson wrote: > > Hendrik Boom <hend...@topoi.pooq.com> <hend...@topoi.pooq.com> wrote: > > > On Mon, Mar 30, 2020 at 03:18:45PM +0000, aitor_czr wrote: > > $ ls --inode --directory "/" > > 2 / > > Is there anything I can do with an inode except check file identity within > a filesystem? > > You can use it as a search condition for find using '-inum n' > Other than that, my quick search suggested there aren't any useful things you > can do with it - or at least nothing that's not easier to do by just looking > up a name for it and working with a normal directory entry. > > I did see some search results related to file with no directory entry, but > the inode staying in existence due to the file being open. As in, "I want to > create a directory entry pointing to a specific inode to rescue the file so > it doesn't disappear when closed". I didn't actually look at any of these > though. > > Simon > > As far as i know, it's not possible to interact with the file directly via > inode for a very good reason: > it would be a way to slip through the directory permissions as you > traverse the full pathname's hierarchy > tree upstream to the given file. > > Cheers, > > Aitor. > > _______________________________________________ > Dng mailing list > Dng@lists.dyne.org > https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng > -- Bruce Perens - General Partner, Incubator.Fund, Partner, OSS.Capital.
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