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
61 lines
1.6 KiB
C
61 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
#include <linux/compiler.h>
|
|
|
|
static struct ins_ops *powerpc__associate_instruction_ops(struct arch *arch, const char *name)
|
|
{
|
|
int i;
|
|
struct ins_ops *ops;
|
|
|
|
/*
|
|
* - Interested only if instruction starts with 'b'.
|
|
* - Few start with 'b', but aren't branch instructions.
|
|
*/
|
|
if (name[0] != 'b' ||
|
|
!strncmp(name, "bcd", 3) ||
|
|
!strncmp(name, "brinc", 5) ||
|
|
!strncmp(name, "bper", 4))
|
|
return NULL;
|
|
|
|
ops = &jump_ops;
|
|
|
|
i = strlen(name) - 1;
|
|
if (i < 0)
|
|
return NULL;
|
|
|
|
/* ignore optional hints at the end of the instructions */
|
|
if (name[i] == '+' || name[i] == '-')
|
|
i--;
|
|
|
|
if (name[i] == 'l' || (name[i] == 'a' && name[i-1] == 'l')) {
|
|
/*
|
|
* if the instruction ends up with 'l' or 'la', then
|
|
* those are considered 'calls' since they update LR.
|
|
* ... except for 'bnl' which is branch if not less than
|
|
* and the absolute form of the same.
|
|
*/
|
|
if (strcmp(name, "bnl") && strcmp(name, "bnl+") &&
|
|
strcmp(name, "bnl-") && strcmp(name, "bnla") &&
|
|
strcmp(name, "bnla+") && strcmp(name, "bnla-"))
|
|
ops = &call_ops;
|
|
}
|
|
if (name[i] == 'r' && name[i-1] == 'l')
|
|
/*
|
|
* instructions ending with 'lr' are considered to be
|
|
* return instructions
|
|
*/
|
|
ops = &ret_ops;
|
|
|
|
arch__associate_ins_ops(arch, name, ops);
|
|
return ops;
|
|
}
|
|
|
|
static int powerpc__annotate_init(struct arch *arch, char *cpuid __maybe_unused)
|
|
{
|
|
if (!arch->initialized) {
|
|
arch->initialized = true;
|
|
arch->associate_instruction_ops = powerpc__associate_instruction_ops;
|
|
arch->objdump.comment_char = '#';
|
|
}
|
|
|
|
return 0;
|
|
}
|