| Commit message (Collapse) | Author | Age | Files | Lines |
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This patch changes mountd to hold the etab file open so that when it's
changed by exportfs, the inode number should change. We then change
auth_reload to reload the file based on whether st_ino is different
from the last time it was checked. It also changes auth_reload to
maintain a static counter value and return it instead of a timestamp
and fixes up get_exportlist accordingly. Finally, it adds some
comments to xtab_write to warn people about editing the etab in place.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: NeilBrown <neilb@suse.de>
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If auth_reload has been called by someone else, get_exportlist
can incorrectly return old data. So track modify times better
and only use cached data if the modify time matches.
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Here's a new set of patches to fix up "showmount -a", based on the approach
suggested by Neil. This first patch is fairly simple. It just stops
the current caching of my_client.
For an explanation, consider this situation with the current code:
1) Client mounts an NFS export from server that is restricted to a particular
hostname or netgroup.
2) DNS or netgroup changes so that the client would be denied.
3) Client attempts mount again. Mount succeeds, even though it shouldn't due
to the fact that mountd relies on cached info in my_client.
This situation can occur as long as no other client attempts a mount between
1 and 3 above. The patch below removes this caching, and causes a new
invocation of client_compose for each pass through auth_authenticate:
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Neil Brown <neilb@suse.de>
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change from 2000-08-02: It causes problems if someone exports
to both a hostname and IP addresses. nfs-utils must be
consistant about the canonical name that it chooses.
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* utils/mountd/auth.c (auth_authenticate): Log the bad path
warning.
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* utils/mountd/auth.c (auth_authenticate_internal): Make sure a
non-NULL hostent is always returned.
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* utils/mountd/auth.c (auth_authenticate_internal): Try to
avoid the reverse name lookup.
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* utils/mountd/auth.c (auth_authenticate_internal): Call
xstrdup for hostname before passing it to gethostbyname.
* utils/mountd/mountd.c (get_exportlist): Use xstrdup instead
of strdup.
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