[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Old Index]
Re: namei and path canonicalization
On Nov 8, 3:12am, dholland-tech%netbsd.org@localhost (David Holland) wrote:
-- Subject: Re: namei and path canonicalization
| On Tue, Nov 07, 2017 at 11:11:16PM +0000, Christos Zoulas wrote:
| > In article <20171107222924.GE17761%netbsd.org@localhost>,
| > David Holland <dholland-tech%netbsd.org@localhost> wrote:
| > >
| > >Also it occurs to me that there's no reason for the kernel to do the
| > >getcwd call; it should just provide the argument given to exec in all
| > >cases, and ld.so can do the getcwd call itself if necessary (if the
| > >string it finds doesn't begin with '/') when/if something uses
| > >$ORIGIN.
| > The kernel does not need to do the getcwd() call, but someone (rtld) will
| > eventually do it for $ORIGIN, either lazily or always.
| Right -- hopefully it can be done lazily, i.e. often not at all.
| > As for killing $ORIGIN for setuid programs, this is already in the ELF
| > specification:
| Sure, but shouldn't we also not pass AT_SUN_EXECNAME for setugid programs?
I am not sure if we go that far; this information is not used...
Main Index |
Thread Index |