16c00db4bb
Pull AFS fixes from David Howells:
"Here's a set of patches that fix a number of bugs in the in-kernel AFS
client, including:
- Fix directory locking to not use individual page locks for
directory reading/scanning but rather to use a semaphore on the
afs_vnode struct as the directory contents must be read in a single
blob and data from different reads must not be mixed as the entire
contents may be shuffled about between reads.
- Fix address list parsing to handle port specifiers correctly.
- Only give up callback records on a server if we actually talked to
that server (we might not be able to access a server).
- Fix some callback handling bugs, including refcounting,
whole-volume callbacks and when callbacks actually get broken in
response to a CB.CallBack op.
- Fix some server/address rotation bugs, including giving up if we
can't probe a server; giving up if a server says it doesn't have a
volume, but there are more servers to try.
- Fix the decoding of fetched statuses to be OpenAFS compatible.
- Fix the handling of server lookups in Cache Manager ops (such as
CB.InitCallBackState3) to use a UUID if possible and to handle no
server being found.
- Fix a bug in server lookup where not all addresses are compared.
- Fix the non-encryption of calls that prevents some servers from
being accessed (this also requires an AF_RXRPC patch that has
already gone in through the net tree).
There's also a patch that adds tracepoints to log Cache Manager ops
that don't find a matching server, either by UUID or by address"
* tag 'afs-fixes-20180514' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
afs: Fix the non-encryption of calls
afs: Fix CB.CallBack handling
afs: Fix whole-volume callback handling
afs: Fix afs_find_server search loop
afs: Fix the handling of an unfound server in CM operations
afs: Add a tracepoint to record callbacks from unlisted servers
afs: Fix the handling of CB.InitCallBackState3 to find the server by UUID
afs: Fix VNOVOL handling in address rotation
afs: Fix AFSFetchStatus decoder to provide OpenAFS compatibility
afs: Fix server rotation's handling of fileserver probe failure
afs: Fix refcounting in callback registration
afs: Fix giving up callbacks on server destruction
afs: Fix address list parsing
afs: Fix directory page locking
90 lines
2.1 KiB
Python
90 lines
2.1 KiB
Python
# Util.py - Python extension for perf script, miscellaneous utility code
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#
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# Copyright (C) 2010 by Tom Zanussi <tzanussi@gmail.com>
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#
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# This software may be distributed under the terms of the GNU General
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# Public License ("GPL") version 2 as published by the Free Software
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# Foundation.
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import errno, os
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FUTEX_WAIT = 0
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FUTEX_WAKE = 1
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FUTEX_PRIVATE_FLAG = 128
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FUTEX_CLOCK_REALTIME = 256
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FUTEX_CMD_MASK = ~(FUTEX_PRIVATE_FLAG | FUTEX_CLOCK_REALTIME)
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NSECS_PER_SEC = 1000000000
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def avg(total, n):
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return total / n
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def nsecs(secs, nsecs):
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return secs * NSECS_PER_SEC + nsecs
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def nsecs_secs(nsecs):
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return nsecs / NSECS_PER_SEC
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def nsecs_nsecs(nsecs):
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return nsecs % NSECS_PER_SEC
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def nsecs_str(nsecs):
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str = "%5u.%09u" % (nsecs_secs(nsecs), nsecs_nsecs(nsecs)),
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return str
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def add_stats(dict, key, value):
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if not dict.has_key(key):
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dict[key] = (value, value, value, 1)
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else:
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min, max, avg, count = dict[key]
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if value < min:
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min = value
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if value > max:
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max = value
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avg = (avg + value) / 2
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dict[key] = (min, max, avg, count + 1)
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def clear_term():
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print("\x1b[H\x1b[2J")
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audit_package_warned = False
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try:
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import audit
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machine_to_id = {
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'x86_64': audit.MACH_86_64,
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'alpha' : audit.MACH_ALPHA,
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'ia64' : audit.MACH_IA64,
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'ppc' : audit.MACH_PPC,
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'ppc64' : audit.MACH_PPC64,
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'ppc64le' : audit.MACH_PPC64LE,
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's390' : audit.MACH_S390,
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's390x' : audit.MACH_S390X,
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'i386' : audit.MACH_X86,
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'i586' : audit.MACH_X86,
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'i686' : audit.MACH_X86,
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}
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try:
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machine_to_id['armeb'] = audit.MACH_ARMEB
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except:
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pass
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machine_id = machine_to_id[os.uname()[4]]
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except:
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if not audit_package_warned:
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audit_package_warned = True
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print "Install the audit-libs-python package to get syscall names.\n" \
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"For example:\n # apt-get install python-audit (Ubuntu)" \
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"\n # yum install audit-libs-python (Fedora)" \
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"\n etc.\n"
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def syscall_name(id):
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try:
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return audit.audit_syscall_to_name(id, machine_id)
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except:
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return str(id)
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def strerror(nr):
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try:
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return errno.errorcode[abs(nr)]
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except:
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return "Unknown %d errno" % nr
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