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
123 lines
4.5 KiB
C
123 lines
4.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _PERF_TRACE_BEAUTY_H
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#define _PERF_TRACE_BEAUTY_H
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <sys/types.h>
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struct strarray {
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int offset;
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int nr_entries;
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const char **entries;
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};
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#define DEFINE_STRARRAY(array) struct strarray strarray__##array = { \
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.nr_entries = ARRAY_SIZE(array), \
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.entries = array, \
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}
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#define DEFINE_STRARRAY_OFFSET(array, off) struct strarray strarray__##array = { \
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.offset = off, \
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.nr_entries = ARRAY_SIZE(array), \
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.entries = array, \
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}
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size_t strarray__scnprintf(struct strarray *sa, char *bf, size_t size, const char *intfmt, int val);
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struct trace;
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struct thread;
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size_t pid__scnprintf_fd(struct trace *trace, pid_t pid, int fd, char *bf, size_t size);
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/**
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* @val: value of syscall argument being formatted
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* @args: All the args, use syscall_args__val(arg, nth) to access one
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* @thread: tid state (maps, pid, tid, etc)
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* @trace: 'perf trace' internals: all threads, etc
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* @parm: private area, may be an strarray, for instance
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* @idx: syscall arg idx (is this the first?)
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* @mask: a syscall arg may mask another arg, see syscall_arg__scnprintf_futex_op
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*/
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struct syscall_arg {
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unsigned long val;
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unsigned char *args;
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struct thread *thread;
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struct trace *trace;
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void *parm;
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u8 idx;
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u8 mask;
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};
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unsigned long syscall_arg__val(struct syscall_arg *arg, u8 idx);
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size_t syscall_arg__scnprintf_strarrays(char *bf, size_t size, struct syscall_arg *arg);
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#define SCA_STRARRAYS syscall_arg__scnprintf_strarrays
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size_t syscall_arg__scnprintf_fd(char *bf, size_t size, struct syscall_arg *arg);
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#define SCA_FD syscall_arg__scnprintf_fd
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size_t syscall_arg__scnprintf_hex(char *bf, size_t size, struct syscall_arg *arg);
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#define SCA_HEX syscall_arg__scnprintf_hex
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size_t syscall_arg__scnprintf_int(char *bf, size_t size, struct syscall_arg *arg);
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#define SCA_INT syscall_arg__scnprintf_int
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size_t syscall_arg__scnprintf_long(char *bf, size_t size, struct syscall_arg *arg);
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#define SCA_LONG syscall_arg__scnprintf_long
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size_t syscall_arg__scnprintf_pid(char *bf, size_t size, struct syscall_arg *arg);
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#define SCA_PID syscall_arg__scnprintf_pid
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size_t syscall_arg__scnprintf_clone_flags(char *bf, size_t size, struct syscall_arg *arg);
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#define SCA_CLONE_FLAGS syscall_arg__scnprintf_clone_flags
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size_t syscall_arg__scnprintf_fcntl_cmd(char *bf, size_t size, struct syscall_arg *arg);
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#define SCA_FCNTL_CMD syscall_arg__scnprintf_fcntl_cmd
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size_t syscall_arg__scnprintf_fcntl_arg(char *bf, size_t size, struct syscall_arg *arg);
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#define SCA_FCNTL_ARG syscall_arg__scnprintf_fcntl_arg
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size_t syscall_arg__scnprintf_flock(char *bf, size_t size, struct syscall_arg *arg);
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#define SCA_FLOCK syscall_arg__scnprintf_flock
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size_t syscall_arg__scnprintf_ioctl_cmd(char *bf, size_t size, struct syscall_arg *arg);
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#define SCA_IOCTL_CMD syscall_arg__scnprintf_ioctl_cmd
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size_t syscall_arg__scnprintf_kcmp_type(char *bf, size_t size, struct syscall_arg *arg);
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#define SCA_KCMP_TYPE syscall_arg__scnprintf_kcmp_type
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size_t syscall_arg__scnprintf_kcmp_idx(char *bf, size_t size, struct syscall_arg *arg);
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#define SCA_KCMP_IDX syscall_arg__scnprintf_kcmp_idx
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size_t syscall_arg__scnprintf_pkey_alloc_access_rights(char *bf, size_t size, struct syscall_arg *arg);
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#define SCA_PKEY_ALLOC_ACCESS_RIGHTS syscall_arg__scnprintf_pkey_alloc_access_rights
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size_t syscall_arg__scnprintf_open_flags(char *bf, size_t size, struct syscall_arg *arg);
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#define SCA_OPEN_FLAGS syscall_arg__scnprintf_open_flags
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size_t syscall_arg__scnprintf_prctl_option(char *bf, size_t size, struct syscall_arg *arg);
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#define SCA_PRCTL_OPTION syscall_arg__scnprintf_prctl_option
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size_t syscall_arg__scnprintf_prctl_arg2(char *bf, size_t size, struct syscall_arg *arg);
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#define SCA_PRCTL_ARG2 syscall_arg__scnprintf_prctl_arg2
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size_t syscall_arg__scnprintf_prctl_arg3(char *bf, size_t size, struct syscall_arg *arg);
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#define SCA_PRCTL_ARG3 syscall_arg__scnprintf_prctl_arg3
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size_t syscall_arg__scnprintf_statx_flags(char *bf, size_t size, struct syscall_arg *arg);
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#define SCA_STATX_FLAGS syscall_arg__scnprintf_statx_flags
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size_t syscall_arg__scnprintf_statx_mask(char *bf, size_t size, struct syscall_arg *arg);
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#define SCA_STATX_MASK syscall_arg__scnprintf_statx_mask
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size_t open__scnprintf_flags(unsigned long flags, char *bf, size_t size);
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void syscall_arg__set_ret_scnprintf(struct syscall_arg *arg,
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size_t (*ret_scnprintf)(char *bf, size_t size, struct syscall_arg *arg));
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const char *arch_syscalls__strerrno(const char *arch, int err);
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#endif /* _PERF_TRACE_BEAUTY_H */
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