| Commit message (Collapse) | Author | Age | Files | Lines |
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possible to search several directories for valid credentials when
making NFS requests.
Original patch from Vince Busam <vbusam@google.com>
Signed-off-by: Kevin Coffman <kwc@citi.umich.edu>.
Signed-off-by: Steve Dickson <steved@redhat.com>
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see if a port number was supplied. If so, use it rather
than the default port number.
Signed-off-by: Olga Kornievskaia <aglo@citi.umich.edu>
Signed-off-by: Kevin Coffman <kwc@citi.umich.edu>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Modified-by: Kevin Coffman <kwc@citi.umich.edu>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Use the new functions added in the previous patch.
Obtain machine credentials in a pre-determined order
Look for appropriate machine credentials in the following order:
root/<fqdn>@REALM
nfs/<fqdn>@REALM
host/<fqdn>@REALM
root/<any-name>@REALM
nfs/<any-name>@REALM
host/<any-name>@REALM
The first matching credential will be used.
Also, the machine credentials to be used are now determined
"on-demand" rather than at gssd startup. This allows keytab
additions to be noticed and used without requiring a restart of gssd.
Signed-off-by: Kevin Coffman <kwc@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@suse.de>
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Add missing newlines to error messages.
Signed-off-by: Kevin Coffman <kwc@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@suse.de>
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Future work needs access to the base pipefs directory rather than
the nfs subdirectory. Create two separate paths called
pipefs_dir and pipefs_nfsdir with the name of each.
Signed-off-by: Kevin Coffman <kwc@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@suse.de>
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Add a new option ("-n") to rpc.gssd to indicate that accesses as root
(uid 0) should not use machine credentials, but should instead use
"normal" Kerberos credentials obtained by root.
This change was prompted by a suggestion and patch from Daniel
Muntz <Dan.Muntz@netapp.com>. That patch suggested trying "normal"
credentials first and falling back to using machine creds for
uid 0 if normal creds failed.
This opens up the case where root may have credentials as "foo@REALM"
and begins accessing files. Then the context using those credentials
expires and must be renewed. If the credentials are now expired, then
root's new context would fall back and be created with the machine
credentials.
Instead, this patch insists that the administrator choose to use either
machine credentials for accesses by uid 0 (the default behavior, as
it was before) or "normal" credentials. In the latter case, arrangements
must be made to obtain credentials before attempting a mount. There
should be no doubts which credentials are used for uid 0.
Signed-off-by: Kevin Coffman <kwc@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@suse.de>
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Signed-off-by: Kevin Coffman <kwc@citi.umich.edu>
Clean up a few warning messages.
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Signed-off-by: Kevin Coffman <kwc@citi.umich.edu>
As suggested by Olaf Kirch <okir@suse.de>, use setfsuid() rather than
seteuid() when creating a gss context. This prevents users from using
credentials that do not belong to them, while also preventing them from
doing things like killing, renicing, or changing the priority of the
gssd process while it is processing the context creation.
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Various paranoia checks:
gssd_proc.c: pass max_field sizes to sscanf to avoid buffer
overflow
svcgssd_proc.c: range_check name.length, to ensure name.length+1
doesn't wrap
idmapd.c(nfsdcb): make sure at least one byte is read before
zeroing the last byte that was read, otherwise memory corruption
is possible.
Found by SuSE security audit.
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Fix memory leak of the AUTH structure on context negotiations
Free AUTH structure after completing context negotiation and sending
context information to the kernel.
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From: Vince Busam <vbusam@google.com>
Signed-off-by: Kevin Coffman <kwc@citi.umich.edu>
Don't unnecessarily close and re-open all pipes after every DNOTIFY
signal. These unnecessary closes were triggering a kernel Oops.
Original patch modified to correct segfault when unmounting last
NFSv4 mount.
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The gssd code should not know about the glue layer's context structure.
A previous patch added gss_export_lucid_sec_context() and
gss_free_lucid_sec_context() functions to the gssapi glue layer.
Use these functions rather than calling directly to the Kerberos
gssapi code (which requires the Kerberos context handle rather
than the glue's context handle).
(really this time)
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portion of clp->servicename rather than hard-coding "nfs".
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