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
66 lines
1.4 KiB
C
66 lines
1.4 KiB
C
/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License, version 2, as
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* published by the Free Software Foundation.
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*
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* Copyright (C) 2017 Hari Bathini, IBM Corporation
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*/
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#ifndef __PERF_NAMESPACES_H
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#define __PERF_NAMESPACES_H
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#include <sys/types.h>
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#include <linux/perf_event.h>
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#include <linux/refcount.h>
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#include <linux/types.h>
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struct namespaces_event;
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struct namespaces {
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struct list_head list;
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u64 end_time;
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struct perf_ns_link_info link_info[];
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};
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struct namespaces *namespaces__new(struct namespaces_event *event);
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void namespaces__free(struct namespaces *namespaces);
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struct nsinfo {
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pid_t pid;
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pid_t tgid;
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pid_t nstgid;
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bool need_setns;
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char *mntns_path;
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refcount_t refcnt;
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};
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struct nscookie {
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int oldns;
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int newns;
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};
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int nsinfo__init(struct nsinfo *nsi);
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struct nsinfo *nsinfo__new(pid_t pid);
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struct nsinfo *nsinfo__copy(struct nsinfo *nsi);
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void nsinfo__delete(struct nsinfo *nsi);
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struct nsinfo *nsinfo__get(struct nsinfo *nsi);
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void nsinfo__put(struct nsinfo *nsi);
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void nsinfo__mountns_enter(struct nsinfo *nsi, struct nscookie *nc);
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void nsinfo__mountns_exit(struct nscookie *nc);
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char *nsinfo__realpath(const char *path, struct nsinfo *nsi);
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static inline void __nsinfo__zput(struct nsinfo **nsip)
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{
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if (nsip) {
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nsinfo__put(*nsip);
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*nsip = NULL;
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}
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}
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#define nsinfo__zput(nsi) __nsinfo__zput(&nsi)
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#endif /* __PERF_NAMESPACES_H */
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