elimiates the driver lockup problem reported by many.
Concepts used were taken from Via's if_fet driver. Verification
and implementation were done by Thomas Nystrom.
Submitted by: Thomas Nystrom <thn@saeab.se>
MFC after: 3 days
during a label change resulting in an mmap removal. This is "fail stop"
behavior, which is preferred, although it offers slightly less
transparency.
Obtained from: TrustedBSD Project
Sponsored by: DARPA, NAI Labs
(Most of the places where mac.h was recursively included from another
kernel header file. net/netinet to follow.)
Obtained from: TrustedBSD Project
Sponsored by: DARPA, NAI Labs
Suggested by: bde
us to reduce namespace pollution by doing a nested include of _label.h
rather than mac.h. mac.h contains lots of baggage, whereas _label.h
contains much less. A follow-up sweep to change nested inclusion will
follow. The problem regarding exporting 'struct label' to userland
due to excessive exporting of kernel structures to userland still
needs to be resolved.
Obtained from: TrustedBSD Project
Sponsored by: DARPA, NAI Labs
Suggested by: bde
parts rather than use vop_{read,write}_args. Access to these
functions will ultimately not be available through the
"vop_{read,write}+IO_EXT" API but this functionality is retained
for debugging purposes for now.
Sponsored by: DARPA & NAI Labs.
to do this made the following script hang:
#!/bin/sh
set -ex
extattrctl start /tmp
extattrctl initattr 64 /tmp/EA00
extattrctl enable /tmp user ea00 /tmp/EA00
extattrctl showattr /tmp/EA00
if the filesystem backing /tmp did not support EAs.
The real solution is probably to have the extattrctl syscall do the
unlocking rather than depend on the filesystem to do it. Considering
that extattrctl is going to be made obsolete anyway, this has dogwash
priority.
Sponsored by: DARPA & NAI Labs.
UFS only thing, and FFS should in principle not know if it is enabled
or not.
This commit cleans ffs_vnops.c for such knowledge, but not ffs_vfsops.c
Sponsored by: DARPA and NAI Labs.
these in the main filesystems. This does not change the resulting code
but makes the source a little bit more grepable.
Sponsored by: DARPA and NAI Labs.
there is a global lock over the undo structures because of the way
they are managed.
Switch to using SLIST instead of rolling our own linked list.
Fix several races where a permission check was done before a
copyin/copyout, if the copy happened to fault it may have been
possible to race for access to a semaphore set that one shouldn't
have access to.
Requested by: rwatson
Tested by: NetBSD regression suite.
entire subsystem, we could move to per-message queue locks, however
the messages themselves seem to come from a global pool and to avoid
over-locking this code (locking individual queues, then the global
pool) I've opted to just do it this way.
Requested by: rwatson
Tested by: NetBSD's regression suite.
as part of the TrustedBSD MAC framework. Instrument the creation
and destruction of pipes, as well as relevant operations, with
necessary calls to the MAC framework. Note that the locking
here is probably not quite right yet, but fixes will be forthcoming.
Obtained from: TrustedBSD Project
Sponsored by: DARPA, NAI Labs
the jail check and the MAC socket labeling in socreate(). This handles
socket creation using a cached credential better (such as in the NFS
client code when rebuilding a socket following a disconnect: the new
socket should be created using the nfsmount cached cred, not the cred
of the thread causing the socket to be rebuilt).
Obtained from: TrustedBSD Project
Sponsored by: DARPA, NAI Labs
enforcement of MAC policy on the read or write operations:
- In ext2fs, don't enforce MAC on loop-back reads and writes supporting
directory read operations in lookup(), directory modifications in
rename(), directory write operations in mkdir(), symlink write
operations in symlink().
- In the NFS client locking code, perform vn_rdwr() on the NFS locking
socket without enforcing MAC, since the write is done on behalf of
the kernel NFS implementation rather than the user process.
- In UFS, don't enforce MAC on loop-back reads and writes supporting
directory read operations in lookup(), and symlink write operations
in symlink().
Obtained from: TrustedBSD Project
Sponsored by: DARPA, NAI Labs
'options MAC') as long as IO_NOMACCHECK is not set in the IO flags.
If IO_NOMACCHECK is set, bypass MAC checks in vn_rdwr(). This allows
vn_rdwr() to be used as a utility function inside of file systems
where MAC checks have already been performed, or where the operation
is being done on behalf of the kernel not the user.
Obtained from: TrustedBSD Project
Sponsored by: DARPA, NAI LAbs
