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
37 lines
817 B
C
37 lines
817 B
C
// SPDX-License-Identifier: GPL-2.0
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#ifndef EFD_SEMAPHORE
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#define EFD_SEMAPHORE 1
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#endif
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#ifndef EFD_NONBLOCK
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#define EFD_NONBLOCK 00004000
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#endif
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#ifndef EFD_CLOEXEC
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#define EFD_CLOEXEC 02000000
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#endif
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static size_t syscall_arg__scnprintf_eventfd_flags(char *bf, size_t size, struct syscall_arg *arg)
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{
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int printed = 0, flags = arg->val;
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if (flags == 0)
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return scnprintf(bf, size, "NONE");
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#define P_FLAG(n) \
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if (flags & EFD_##n) { \
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printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \
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flags &= ~EFD_##n; \
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}
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P_FLAG(SEMAPHORE);
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P_FLAG(CLOEXEC);
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P_FLAG(NONBLOCK);
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#undef P_FLAG
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if (flags)
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printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags);
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return printed;
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}
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#define SCA_EFD_FLAGS syscall_arg__scnprintf_eventfd_flags
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