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
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __PERF_DATA_H
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#define __PERF_DATA_H
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#include <stdbool.h>
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enum perf_data_mode {
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PERF_DATA_MODE_WRITE,
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PERF_DATA_MODE_READ,
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};
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struct perf_data_file {
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const char *path;
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int fd;
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};
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struct perf_data {
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struct perf_data_file file;
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bool is_pipe;
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bool force;
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unsigned long size;
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enum perf_data_mode mode;
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};
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static inline bool perf_data__is_read(struct perf_data *data)
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{
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return data->mode == PERF_DATA_MODE_READ;
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}
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static inline bool perf_data__is_write(struct perf_data *data)
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{
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return data->mode == PERF_DATA_MODE_WRITE;
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}
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static inline int perf_data__is_pipe(struct perf_data *data)
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{
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return data->is_pipe;
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}
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static inline int perf_data__fd(struct perf_data *data)
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{
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return data->file.fd;
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}
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static inline unsigned long perf_data__size(struct perf_data *data)
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{
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return data->size;
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}
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int perf_data__open(struct perf_data *data);
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void perf_data__close(struct perf_data *data);
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ssize_t perf_data__write(struct perf_data *data,
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void *buf, size_t size);
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ssize_t perf_data_file__write(struct perf_data_file *file,
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void *buf, size_t size);
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/*
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* If at_exit is set, only rename current perf.data to
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* perf.data.<postfix>, continue write on original data.
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* Set at_exit when flushing the last output.
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*
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* Return value is fd of new output.
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*/
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int perf_data__switch(struct perf_data *data,
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const char *postfix,
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size_t pos, bool at_exit);
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#endif /* __PERF_DATA_H */
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