instead of calling acctwatch() from softclock. The acctwatch() function
needs to hold an sx lock and also makes a VFS call, and neither of these
are good things (or safe) to do from a callout. The kthread only exists
and is running when accounting is turned on; it is started and stopped
as needed. I didn't run acctwatch() via the thread taskqueue at Robert's
request as he was worried that if the accounting file was over NFS the
VFS_STAT() calls might stall other work on the taskqueue.
- Add an acct_disable() function to take care of closing the accounting
vnode and cleaning up so we don't duplicate the same code in two
different places.
MFC after: 3 days
applications to insert a "tee" in the live audit event stream. Records
are inserted into a per-clone queue so that user processes can pull
discreet records out of the queue. Unlike delivery to disk, audit pipes
are "lossy", dropping records in low memory conditions or when the
process falls behind real-time events. This mechanism is appropriate
for use by live monitoring systems, host-based intrusion detection, etc,
and avoids applications having to dig through active on-disk trails that
are owned by the audit daemon.
Obtained from: TrustedBSD Project
initialization routines into a ctor, tear-down to a dtor, cleaning
up, etc. This will allow audit records to be allocated from
per-cpu caches.
On recent FreeBSD, dropping the audit_mtx around freeing to UMA is
no longer required (at one point it was possible to acquire Giant
on that path), so a mutex-free thread-local drain is no longer
required.
Obtained from: TrustedBSD Project
hack where it assumes the first field of the driver softc is the struct
ifnet, and it copies its value in mii_phy_probe().
- In the interrupt handler, set the mbuf m_len field on packet receive.
the callers if the exec either succeeds or fails early.
- Move the code to call exit1() if the exec fails after the vmspace is
gone to the bottom of kern_execve() to cut down on some code duplication.
to "tee" the BSM record stream for the purposes of live monitoring,
intrusion detection, etc. Support for audit pipes will be committed in
the near future.
Obtained from: TrustedBSD Project
- Run send queue down to completion, not just one packet.
It has been observed to cause a stall queue otherwise.
- Prevent queueing multiple function calls to a node.
MFC after: 3 days
vfs_mount_destroy waiting for this ref to hit 0. We don't print an
error if we are rebooting as the root mount always retains some refernces
by init proc.
- Acquire a mnt ref for every vnode allocated to a mount point. Drop this
ref only once vdestroy() has been called and the mount has been freed.
- No longer NULL the v_mount pointer in delmntque() so that we may release
the ref after vgone() has been called. This allows us to guarantee
that the mount point structure will be valid until the last vnode has
lost its last ref.
- Fix a few places that rely on checking v_mount to detect recycling.
Sponsored by: Isilon Systems, Inc.
MFC After: 1 week
lock also protects this flag so it is not necessary.
- Don't rely on v_mount to detect whether or not we've been recycled, use
the more appropriate VI_DOOMED instead.
Sponsored by: Isilon Systems, Inc.
MFC After: 1 week
