perf-eh_elf/util/strfilter.h
Linus Torvalds 16c00db4bb Merge tag 'afs-fixes-20180514' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs
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
2018-05-15 10:48:36 -07:00

84 lines
2.5 KiB
C

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __PERF_STRFILTER_H
#define __PERF_STRFILTER_H
/* General purpose glob matching filter */
#include <linux/list.h>
#include <stdbool.h>
/* A node of string filter */
struct strfilter_node {
struct strfilter_node *l; /* Tree left branche (for &,|) */
struct strfilter_node *r; /* Tree right branche (for !,&,|) */
const char *p; /* Operator or rule */
};
/* String filter */
struct strfilter {
struct strfilter_node *root;
};
/**
* strfilter__new - Create a new string filter
* @rules: Filter rule, which is a combination of glob expressions.
* @err: Pointer which points an error detected on @rules
*
* Parse @rules and return new strfilter. Return NULL if an error detected.
* In that case, *@err will indicate where it is detected, and *@err is NULL
* if a memory allocation is failed.
*/
struct strfilter *strfilter__new(const char *rules, const char **err);
/**
* strfilter__or - Append an additional rule by logical-or
* @filter: Original string filter
* @rules: Filter rule to be appended at left of the root of
* @filter by using logical-or.
* @err: Pointer which points an error detected on @rules
*
* Parse @rules and join it to the @filter by using logical-or.
* Return 0 if success, or return the error code.
*/
int strfilter__or(struct strfilter *filter,
const char *rules, const char **err);
/**
* strfilter__add - Append an additional rule by logical-and
* @filter: Original string filter
* @rules: Filter rule to be appended at left of the root of
* @filter by using logical-and.
* @err: Pointer which points an error detected on @rules
*
* Parse @rules and join it to the @filter by using logical-and.
* Return 0 if success, or return the error code.
*/
int strfilter__and(struct strfilter *filter,
const char *rules, const char **err);
/**
* strfilter__compare - compare given string and a string filter
* @filter: String filter
* @str: target string
*
* Compare @str and @filter. Return true if the str match the rule
*/
bool strfilter__compare(struct strfilter *filter, const char *str);
/**
* strfilter__delete - delete a string filter
* @filter: String filter to delete
*
* Delete @filter.
*/
void strfilter__delete(struct strfilter *filter);
/**
* strfilter__string - Reconstruct a rule string from filter
* @filter: String filter to reconstruct
*
* Reconstruct a rule string from @filter. This will be good for
* debug messages. Note that returning string must be freed afterward.
*/
char *strfilter__string(struct strfilter *filter);
#endif