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
73 lines
1.3 KiB
C
73 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
#include "perf.h"
|
|
#include "util/util.h"
|
|
#include "util/debug.h"
|
|
#include <subcmd/parse-options.h>
|
|
#include "util/parse-regs-options.h"
|
|
|
|
int
|
|
parse_regs(const struct option *opt, const char *str, int unset)
|
|
{
|
|
uint64_t *mode = (uint64_t *)opt->value;
|
|
const struct sample_reg *r;
|
|
char *s, *os = NULL, *p;
|
|
int ret = -1;
|
|
|
|
if (unset)
|
|
return 0;
|
|
|
|
/*
|
|
* cannot set it twice
|
|
*/
|
|
if (*mode)
|
|
return -1;
|
|
|
|
/* str may be NULL in case no arg is passed to -I */
|
|
if (str) {
|
|
/* because str is read-only */
|
|
s = os = strdup(str);
|
|
if (!s)
|
|
return -1;
|
|
|
|
for (;;) {
|
|
p = strchr(s, ',');
|
|
if (p)
|
|
*p = '\0';
|
|
|
|
if (!strcmp(s, "?")) {
|
|
fprintf(stderr, "available registers: ");
|
|
for (r = sample_reg_masks; r->name; r++) {
|
|
fprintf(stderr, "%s ", r->name);
|
|
}
|
|
fputc('\n', stderr);
|
|
/* just printing available regs */
|
|
return -1;
|
|
}
|
|
for (r = sample_reg_masks; r->name; r++) {
|
|
if (!strcasecmp(s, r->name))
|
|
break;
|
|
}
|
|
if (!r->name) {
|
|
ui__warning("unknown register %s,"
|
|
" check man page\n", s);
|
|
goto error;
|
|
}
|
|
|
|
*mode |= r->mask;
|
|
|
|
if (!p)
|
|
break;
|
|
|
|
s = p + 1;
|
|
}
|
|
}
|
|
ret = 0;
|
|
|
|
/* default to all possible regs */
|
|
if (*mode == 0)
|
|
*mode = PERF_REGS_MASK;
|
|
error:
|
|
free(os);
|
|
return ret;
|
|
}
|