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
2.5 KiB
C
90 lines
2.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __PERF_STRLIST_H
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#define __PERF_STRLIST_H
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#include <linux/rbtree.h>
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#include <stdbool.h>
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#include "rblist.h"
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struct str_node {
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struct rb_node rb_node;
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const char *s;
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};
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struct strlist {
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struct rblist rblist;
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bool dupstr;
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bool file_only;
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};
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/*
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* @file_only: When dirname is present, only consider entries as filenames,
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* that should not be added to the list if dirname/entry is not
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* found
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*/
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struct strlist_config {
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bool dont_dupstr;
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bool file_only;
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const char *dirname;
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};
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struct strlist *strlist__new(const char *slist, const struct strlist_config *config);
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void strlist__delete(struct strlist *slist);
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void strlist__remove(struct strlist *slist, struct str_node *sn);
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int strlist__load(struct strlist *slist, const char *filename);
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int strlist__add(struct strlist *slist, const char *str);
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struct str_node *strlist__entry(const struct strlist *slist, unsigned int idx);
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struct str_node *strlist__find(struct strlist *slist, const char *entry);
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static inline bool strlist__has_entry(struct strlist *slist, const char *entry)
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{
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return strlist__find(slist, entry) != NULL;
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}
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static inline bool strlist__empty(const struct strlist *slist)
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{
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return rblist__empty(&slist->rblist);
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}
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static inline unsigned int strlist__nr_entries(const struct strlist *slist)
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{
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return rblist__nr_entries(&slist->rblist);
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}
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/* For strlist iteration */
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static inline struct str_node *strlist__first(struct strlist *slist)
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{
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struct rb_node *rn = rb_first(&slist->rblist.entries);
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return rn ? rb_entry(rn, struct str_node, rb_node) : NULL;
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}
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static inline struct str_node *strlist__next(struct str_node *sn)
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{
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struct rb_node *rn;
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if (!sn)
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return NULL;
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rn = rb_next(&sn->rb_node);
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return rn ? rb_entry(rn, struct str_node, rb_node) : NULL;
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}
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/**
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* strlist_for_each - iterate over a strlist
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* @pos: the &struct str_node to use as a loop cursor.
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* @slist: the &struct strlist for loop.
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*/
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#define strlist__for_each_entry(pos, slist) \
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for (pos = strlist__first(slist); pos; pos = strlist__next(pos))
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/**
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* strlist_for_each_safe - iterate over a strlist safe against removal of
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* str_node
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* @pos: the &struct str_node to use as a loop cursor.
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* @n: another &struct str_node to use as temporary storage.
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* @slist: the &struct strlist for loop.
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*/
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#define strlist__for_each_entry_safe(pos, n, slist) \
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for (pos = strlist__first(slist), n = strlist__next(pos); pos;\
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pos = n, n = strlist__next(n))
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#endif /* __PERF_STRLIST_H */
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