--- David Walter <[EMAIL PROTECTED]> wrote:
>
> I ran into a strange problem today when running x under the hurd.
>
> I noticed that I was not able to load some programs under X as a user.
>
> At first I thought that this was a user vs root permissions problem
> because I hadn't seen this unde
Roland McGrath <[EMAIL PROTECTED]> writes:
> The only drawback I see is in the case when svuid!=euid or svgid!=egid, and
> you are executing an sugid file. The user will reauthenticate everything
> for the svuid=euid, svgid=egid change and then the filesystem will
> reauthenticate everything aga
Roland McGrath <[EMAIL PROTECTED]> writes:
> We do. The virtual copying behavior is enabled by a Boolean argument to
> vm_map. The issue is having several mappings together as an atomic unit
> relative to intervening write calls (or modifications via shared
> mmap).
One could get the (suckish)
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On Sat, May 11, 2002 at 10:28:19PM -0400, Roland McGrath wrote:
> Just to keep the record straight, I was talking about having the filesystem
> implementing file_exec do it (that's where the only auth diddling is, the
> exec server doesn't do it). But having the user do it is a better plan. I
>
On Sun, May 12, 2002 at 01:15:47AM -0400, David Walter wrote:
> But I found out by ldd'ing some of the programs and verifying that the
> LD_LIBRARY_PATH was correctly configured to point to /X11R6/lib for
> the user account that ldd _failed_ to find libX11.so even with the
> correct LD_LIBRARY_PAT
On Sun, May 12, 2002 at 02:24:24PM +0200, Marcus Brinkmann wrote:
> In Unix, there doesn't seem to be a way to change the saved ID other than
> changing the effective ID and do a fork().
exec(), not fork(), of course.
Thanks,
Marcus
--
`Rhubarb is no Egyptian god.' Debian http://www.debian.org
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On Sun, May 05, 2002 at 04:27:47PM -0400, Roland McGrath wrote:
> Oh, that EISDIR must be from opening with write permission in
> netfs_attempt_lookup. I made it check for EROFS or EISDIR as it does for
> EACCES. If there are other possible errors for an O_RDWR open that aren't
> possible for a
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Hi,
I have done a few tests.
fakeauth works with spawni.c from the glibc 2.3 (HEAD) branch. Roland, any
plans to put this into the 2.2 branch? We can probably do this only for
the Debian package, too. (The reason it doesn't work right now is that
fork() creates a new receive right for the fak
> fakeauth works with spawni.c from the glibc 2.3 (HEAD) branch. Roland, any
> plans to put this into the 2.2 branch?
Definitely not. I don't think you should use it for the debian version
either. That code is too young. What we can do is make fakeauth use the
underlying hurdish stuff directl
> The problem is symbolic links. We get ENOTDIR from file_name_lookup_under
> when trying to open a symbolic link to a file with the O_EXEC bit set, and
> we don't catch this in netfs_attempt_fakeroot. I have not verified it, but
> had I to venture a guess I would say this comes from the EOPNOTS
On Sun, May 12, 2002 at 03:51:09PM -0400, Roland McGrath wrote:
> Definitely not. I don't think you should use it for the debian version
> either. That code is too young. What we can do is make fakeauth use the
> underlying hurdish stuff directly instead of either fork or spawn.
Well, ok. I w
On Sun, May 12, 2002 at 03:59:23PM -0400, Roland McGrath wrote:
> That seems like a reasonable deduction. I've made fakeroot treat
> EOPNOTSUPP like EACCES here.
But we get ENOTDIR because of lookup_error mangling, not EOPNOTSUPP.
> I also made it try zero openmodes if all else
> fails.
Thanks
> On Sun, May 12, 2002 at 03:59:23PM -0400, Roland McGrath wrote:
> > That seems like a reasonable deduction. I've made fakeroot treat
> > EOPNOTSUPP like EACCES here.
>
> But we get ENOTDIR because of lookup_error mangling, not EOPNOTSUPP.
Oh, right. I wasn't thinking about file_name_lookup_u
> Well, ok. I will use my locally compiled glibc for a while, but it is
> difficult to get it tested with hardly anything using posix_spawn. So this
> is an incentive for me to compile bash, make and gcc using posix_spawn and
> give this code some testing.
Getting stuff to use posix_spawn is a
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On Sun, May 12, 2002 at 05:14:17PM -0400, Roland McGrath wrote:
> > Cool, I started implementing it when I noticed that it isn't too easy to
> > construct the mach_msg call from the inp.
>
> Sure it is.
Well, I will reserve my final judgement for the time when everything works
as it should :)
> Cruel. So the code in libpager/demux.c is actually wrong in using the
> remote part rather than the local port, I take it?
Yes.
> > Do you mean the issue of peropen state that I mentioned, or something else?
>
> Yeah, that one.
Ok, I don't think that will bite for the package-building uses
On Sun, May 12, 2002 at 07:40:05PM -0400, Roland McGrath wrote:
> > * Creating pipe fails also with Operation not permitted, and I have no clue
> > yet why. /servers/socket/1 is correctly looked up (with flags being 0, by
> > the way), and then I don't think the pflocal server is even involved
> Ugh, netfs_attempt_lookup did not fail, but netfs_S_dir_lookup does! This
> is because it sees that S_ISCHR evaluates to true on the node. Because
> fakeroot has no translator started on the node yet, fshelp_fetch_root will
> try to do so.
I see. This is just a case of not matching the assum
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On Sun, May 12, 2002 at 07:40:05PM -0400, Roland McGrath wrote:
> There are a few different ways to attack this:
>
> 1. Override netfs_S_file_exec to just pass it through. Then a setuid exec
>will be a real setuid exec and will escape from the fakeroot and
>fakeauth universes entirely.
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msg04526/bin0.bin
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Title: main2
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Package: hurd
Version: 20020418-1
Severity: serious
Justification: policy violation section 13.2
diff -u /usr/src/hurd-cvs/debian/postinst debian/postinst
--- /usr/src/hurd-cvs/debian/postinst Sat Oct 9 00:57:30 1999
+++ debian/postinst Mon May 13 06:56:53 2002
@@ -16,7 +16,7 @@
# Ins
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Thank you to all the people who replied. I had some suggestions from
Robert Millan and Oystein Viggen on how to use dyndns.org for hosting a
machine myself. Also thanks to Peter Thoeny, TWiki's author for his
interest and encouragement. Joachim Nilsson has provided a home for the
Hurd TWiki tri
Roland McGrath <[EMAIL PROTECTED]> writes:
> CVSROOT: /cvsroot/hurd
> Module name: hurd
> Changes by: Roland McGrath <[EMAIL PROTECTED]> 02/05/12 17:02:13
>
> Modified files:
> utils : fakeauth.c
>
> Log message:
> 2002-05-12 Roland McGrath <[EMAIL PROTECTED]>
>
[EMAIL PROTECTED] (Thomas Bushnell, BSG) writes:
> Right, but that's already a Hurd-specific extension. So it's fine to
> expect it to use another Hurd-specific extension to get a reliable PID
> or other identification.
What would such an extension look like?
/Niels
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