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platform_system_core
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Merge "liblog: simplify logd 'command' functions and struct logger"

This commit is contained in:
Tom Cherry 2019-11-18 21:47:16 +00:00 committed by Gerrit Code Review
parent fe983b6681 9156c534e0
commit 7d16aedc47
10 changed files with 134 additions and 361 deletions
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10
liblog/event_tag_map.cpp
View File

@ -494,7 +494,7 @@ void android_closeEventTagMap(EventTagMap* map) {
// Cache miss, go to logd to acquire a public reference.
// Because we lack access to a SHARED PUBLIC /dev/event-log-tags file map?
static const TagFmt* __getEventTag(EventTagMap* map, unsigned int tag) {
static const TagFmt* __getEventTag([[maybe_unused]] EventTagMap* map, unsigned int tag) {
// call event tag service to arrange for a new tag
char* buf = NULL;
// Can not use android::base::StringPrintf, asprintf + free instead.
@ -515,8 +515,9 @@ static const TagFmt* __getEventTag(EventTagMap* map, unsigned int tag) {
} else {
size = ret;
}
#ifdef __ANDROID__
// Ask event log tag service for an existing entry
if (__send_log_msg(buf, size) >= 0) {
if (SendLogdControlMessage(buf, size) >= 0) {
buf[size - 1] = '\0';
char* ep;
unsigned long val = strtoul(buf, &ep, 10); // return size
@ -529,6 +530,7 @@ static const TagFmt* __getEventTag(EventTagMap* map, unsigned int tag) {
}
}
}
#endif
free(buf);
}
return NULL;
@ -618,8 +620,9 @@ int android_lookupEventTagNum(EventTagMap* map, const char* tagname, const char*
} else {
size = ret;
}
#ifdef __ANDROID__
// Ask event log tag service for an allocation
if (__send_log_msg(buf, size) >= 0) {
if (SendLogdControlMessage(buf, size) >= 0) {
buf[size - 1] = '\0';
unsigned long val = strtoul(buf, &cp, 10); // return size
if ((buf != cp) && (val > 0) && (*cp == '\n')) { // truncation OK
@ -635,6 +638,7 @@ int android_lookupEventTagNum(EventTagMap* map, const char* tagname, const char*
}
}
}
#endif
free(buf);
}

4
liblog/fake_log_device.cpp
View File

@ -650,10 +650,6 @@ int fakeLogOpen(const char* pathName) {
return fd;
}
ssize_t __send_log_msg(char*, size_t) {
return -ENODEV;
}
int __android_log_is_loggable(int prio, const char*, int def) {
int logLevel = def;
return logLevel >= 0 && prio >= logLevel;

1
liblog/fake_log_device.h
View File

@ -29,7 +29,6 @@ int fakeLogOpen(const char* pathName);
int fakeLogClose(int fd);
ssize_t fakeLogWritev(int fd, const struct iovec* vector, int count);
ssize_t __send_log_msg(char*, size_t);
int __android_log_is_loggable(int prio, const char*, int def);
int __android_log_is_loggable_len(int prio, const char*, size_t, int def);
int __android_log_is_debuggable();

169
liblog/logd_reader.cpp
View File

@ -40,39 +40,16 @@
#include "logger.h"
static int LogdAvailable(log_id_t LogId);
static int LogdVersion(struct logger* logger, struct android_log_transport_context* transp);
static int LogdRead(struct logger_list* logger_list, struct android_log_transport_context* transp,
struct log_msg* log_msg);
static int LogdPoll(struct logger_list* logger_list, struct android_log_transport_context* transp);
static void LogdClose(struct logger_list* logger_list,
struct android_log_transport_context* transp);
static int LogdClear(struct logger* logger, struct android_log_transport_context* transp);
static ssize_t LogdSetSize(struct logger* logger, struct android_log_transport_context* transp,
size_t size);
static ssize_t LogdGetSize(struct logger* logger, struct android_log_transport_context* transp);
static ssize_t LogdGetReadableSize(struct logger* logger,
struct android_log_transport_context* transp);
static ssize_t LogdGetPrune(struct logger_list* logger,
struct android_log_transport_context* transp, char* buf, size_t len);
static ssize_t LogdSetPrune(struct logger_list* logger,
struct android_log_transport_context* transp, char* buf, size_t len);
static ssize_t LogdGetStats(struct logger_list* logger,
struct android_log_transport_context* transp, char* buf, size_t len);
struct android_log_transport_read logdLoggerRead = {
.name = "logd",
.available = LogdAvailable,
.version = LogdVersion,
.close = LogdClose,
.read = LogdRead,
.poll = LogdPoll,
.clear = LogdClear,
.setSize = LogdSetSize,
.getSize = LogdGetSize,
.getReadableSize = LogdGetReadableSize,
.getPrune = LogdGetPrune,
.setPrune = LogdSetPrune,
.getStats = LogdGetStats,
};
static int LogdAvailable(log_id_t logId) {
@ -116,7 +93,7 @@ static int socket_local_client(const std::string& name, int type) {
}
/* worker for sending the command to the logger */
static ssize_t send_log_msg(struct logger* logger, const char* msg, char* buf, size_t buf_size) {
ssize_t SendLogdControlMessage(char* buf, size_t buf_size) {
ssize_t ret;
size_t len;
char* cp;
@ -126,10 +103,6 @@ static ssize_t send_log_msg(struct logger* logger, const char* msg, char* buf, s
return sock;
}
if (msg) {
snprintf(buf, buf_size, msg, logger ? logger->logId : (unsigned)-1);
}
len = strlen(buf) + 1;
ret = TEMP_FAILURE_RETRY(write(sock, buf, len));
if (ret <= 0) {
@ -180,10 +153,6 @@ done:
return ret;
}
ssize_t __send_log_msg(char* buf, size_t buf_size) {
return send_log_msg(NULL, NULL, buf, buf_size);
}
static int check_log_success(char* buf, ssize_t ret) {
if (ret < 0) {
return ret;
@ -197,17 +166,28 @@ static int check_log_success(char* buf, ssize_t ret) {
return 0;
}
static int LogdClear(struct logger* logger, struct android_log_transport_context*) {
int android_logger_clear(struct logger* logger) {
if (!android_logger_is_logd(logger)) {
return -EINVAL;
}
uint32_t log_id = android_logger_get_id(logger);
char buf[512];
snprintf(buf, sizeof(buf), "clear %" PRIu32, log_id);
return check_log_success(buf, send_log_msg(logger, "clear %d", buf, sizeof(buf)));
return check_log_success(buf, SendLogdControlMessage(buf, sizeof(buf)));
}
/* returns the total size of the log's ring buffer */
static ssize_t LogdGetSize(struct logger* logger, struct android_log_transport_context*) {
char buf[512];
long android_logger_get_log_size(struct logger* logger) {
if (!android_logger_is_logd(logger)) {
return -EINVAL;
}
ssize_t ret = send_log_msg(logger, "getLogSize %d", buf, sizeof(buf));
uint32_t log_id = android_logger_get_id(logger);
char buf[512];
snprintf(buf, sizeof(buf), "getLogSize %" PRIu32, log_id);
ssize_t ret = SendLogdControlMessage(buf, sizeof(buf));
if (ret < 0) {
return ret;
}
@ -219,23 +199,32 @@ static ssize_t LogdGetSize(struct logger* logger, struct android_log_transport_c
return atol(buf);
}
static ssize_t LogdSetSize(struct logger* logger, struct android_log_transport_context*,
size_t size) {
int android_logger_set_log_size(struct logger* logger, unsigned long size) {
if (!android_logger_is_logd(logger)) {
return -EINVAL;
}
uint32_t log_id = android_logger_get_id(logger);
char buf[512];
snprintf(buf, sizeof(buf), "setLogSize %" PRIu32 " %lu", log_id, size);
snprintf(buf, sizeof(buf), "setLogSize %d %zu", logger->logId, size);
return check_log_success(buf, send_log_msg(NULL, NULL, buf, sizeof(buf)));
return check_log_success(buf, SendLogdControlMessage(buf, sizeof(buf)));
}
/*
* returns the readable size of the log's ring buffer (that is, amount of the
* log consumed)
*/
static ssize_t LogdGetReadableSize(struct logger* logger, struct android_log_transport_context*) {
char buf[512];
long android_logger_get_log_readable_size(struct logger* logger) {
if (!android_logger_is_logd(logger)) {
return -EINVAL;
}
ssize_t ret = send_log_msg(logger, "getLogSizeUsed %d", buf, sizeof(buf));
uint32_t log_id = android_logger_get_id(logger);
char buf[512];
snprintf(buf, sizeof(buf), "getLogSizeUsed %" PRIu32, log_id);
ssize_t ret = SendLogdControlMessage(buf, sizeof(buf));
if (ret < 0) {
return ret;
}
@ -247,20 +236,15 @@ static ssize_t LogdGetReadableSize(struct logger* logger, struct android_log_tra
return atol(buf);
}
/*
* returns the logger version
*/
static int LogdVersion(struct logger*, struct android_log_transport_context*) {
uid_t uid = __android_log_uid();
return ((uid != AID_ROOT) && (uid != AID_LOG) && (uid != AID_SYSTEM)) ? 3 : 4;
int android_logger_get_log_version(struct logger*) {
return 4;
}
/*
* returns statistics
*/
static ssize_t LogdGetStats(struct logger_list* logger_list, struct android_log_transport_context*,
char* buf, size_t len) {
struct logger* logger;
ssize_t android_logger_get_statistics(struct logger_list* logger_list, char* buf, size_t len) {
if (logger_list->mode & ANDROID_LOG_PSTORE) {
return -EINVAL;
}
char* cp = buf;
size_t remaining = len;
size_t n;
@ -270,27 +254,35 @@ static ssize_t LogdGetStats(struct logger_list* logger_list, struct android_log_
remaining -= n;
cp += n;
logger_for_each(logger, logger_list) {
n = snprintf(cp, remaining, " %d", logger->logId);
n = MIN(n, remaining);
remaining -= n;
cp += n;
for (size_t log_id = 0; log_id < LOG_ID_MAX; ++log_id) {
if ((1 << log_id) & logger_list->log_mask) {
n = snprintf(cp, remaining, " %zu", log_id);
n = MIN(n, remaining);
remaining -= n;
cp += n;
}
}
if (logger_list->pid) {
snprintf(cp, remaining, " pid=%u", logger_list->pid);
}
return send_log_msg(NULL, NULL, buf, len);
return SendLogdControlMessage(buf, len);
}
ssize_t android_logger_get_prune_list(struct logger_list* logger_list, char* buf, size_t len) {
if (logger_list->mode & ANDROID_LOG_PSTORE) {
return -EINVAL;
}
snprintf(buf, len, "getPruneList");
return SendLogdControlMessage(buf, len);
}
static ssize_t LogdGetPrune(struct logger_list*, struct android_log_transport_context*, char* buf,
size_t len) {
return send_log_msg(NULL, "getPruneList", buf, len);
}
int android_logger_set_prune_list(struct logger_list* logger_list, char* buf, size_t len) {
if (logger_list->mode & ANDROID_LOG_PSTORE) {
return -EINVAL;
}
static ssize_t LogdSetPrune(struct logger_list*, struct android_log_transport_context*, char* buf,
size_t len) {
const char cmd[] = "setPruneList ";
const size_t cmdlen = sizeof(cmd) - 1;
@ -301,11 +293,10 @@ static ssize_t LogdSetPrune(struct logger_list*, struct android_log_transport_co
buf[len - 1] = '\0';
memcpy(buf, cmd, cmdlen);
return check_log_success(buf, send_log_msg(NULL, NULL, buf, len));
return check_log_success(buf, SendLogdControlMessage(buf, len));
}
static int logdOpen(struct logger_list* logger_list, struct android_log_transport_context* transp) {
struct logger* logger;
char buffer[256], *cp, c;
int ret, remaining, sock;
@ -333,12 +324,15 @@ static int logdOpen(struct logger_list* logger_list, struct android_log_transpor
cp += 5;
c = '=';
remaining = sizeof(buffer) - (cp - buffer);
logger_for_each(logger, logger_list) {
ret = snprintf(cp, remaining, "%c%u", c, logger->logId);
ret = MIN(ret, remaining);
remaining -= ret;
cp += ret;
c = ',';
for (size_t log_id = 0; log_id < LOG_ID_MAX; ++log_id) {
if ((1 << log_id) & logger_list->log_mask) {
ret = snprintf(cp, remaining, "%c%zu", c, log_id);
ret = MIN(ret, remaining);
remaining -= ret;
cp += ret;
c = ',';
}
}
if (logger_list->tail) {
@ -412,27 +406,6 @@ static int LogdRead(struct logger_list* logger_list, struct android_log_transpor
return ret;
}
static int LogdPoll(struct logger_list* logger_list, struct android_log_transport_context* transp) {
struct pollfd p;
int ret = logdOpen(logger_list, transp);
if (ret < 0) {
return ret;
}
memset(&p, 0, sizeof(p));
p.fd = ret;
p.events = POLLIN;
ret = poll(&p, 1, 20);
if ((ret > 0) && !(p.revents & POLLIN)) {
ret = 0;
}
if ((ret == -1) && errno) {
return -errno;
}
return ret;
}
/* Close all the logs */
static void LogdClose(struct logger_list*, struct android_log_transport_context* transp) {
int sock = atomic_exchange(&transp->context.sock, -1);

2
liblog/logd_reader.h
View File

@ -22,6 +22,6 @@
__BEGIN_DECLS
ssize_t __send_log_msg(char* buf, size_t buf_size);
ssize_t SendLogdControlMessage(char* buf, size_t buf_size);
__END_DECLS

41
liblog/logger.h
View File

@ -53,7 +53,6 @@ struct android_log_transport_read {
/* Does not cause resources to be taken */
int (*available)(log_id_t logId);
int (*version)(struct logger* logger, struct android_log_transport_context* transp);
/* Release resources taken by the following interfaces */
void (*close)(struct logger_list* logger_list, struct android_log_transport_context* transp);
/*
@ -62,53 +61,37 @@ struct android_log_transport_read {
*/
int (*read)(struct logger_list* logger_list, struct android_log_transport_context* transp,
struct log_msg* log_msg);
/* Must only be called if not ANDROID_LOG_NONBLOCK (blocking) */
int (*poll)(struct logger_list* logger_list, struct android_log_transport_context* transp);
int (*clear)(struct logger* logger, struct android_log_transport_context* transp);
ssize_t (*setSize)(struct logger* logger, struct android_log_transport_context* transp,
size_t size);
ssize_t (*getSize)(struct logger* logger, struct android_log_transport_context* transp);
ssize_t (*getReadableSize)(struct logger* logger, struct android_log_transport_context* transp);
ssize_t (*getPrune)(struct logger_list* logger_list, struct android_log_transport_context* transp,
char* buf, size_t len);
ssize_t (*setPrune)(struct logger_list* logger_list, struct android_log_transport_context* transp,
char* buf, size_t len);
ssize_t (*getStats)(struct logger_list* logger_list, struct android_log_transport_context* transp,
char* buf, size_t len);
};
struct android_log_transport_context {
union android_log_context_union context; /* zero init per-transport context */
struct android_log_transport_read* transport;
unsigned logMask; /* mask of requested log buffers */
};
struct logger_list {
struct listnode logger;
android_log_transport_context transport_context;
bool transport_initialized;
int mode;
unsigned int tail;
log_time start;
pid_t pid;
uint32_t log_mask;
};
struct logger {
struct listnode node;
struct logger_list* parent;
// Format for a 'logger' entry: uintptr_t where only the bottom 32 bits are used.
// bit 31: Set if this 'logger' is for logd.
// bit 30: Set if this 'logger' is for pmsg
// bits 0-2: the decimal value of the log buffer.
// Other bits are unused.
log_id_t logId;
};
#define LOGGER_LOGD (1 << 31)
#define LOGGER_PMSG (1 << 30)
#define LOGGER_LOG_ID_MASK ((1 << 3) - 1)
/* assumes caller has structures read-locked, single threaded, or fenced */
#define logger_for_each(logp, logger_list) \
for ((logp) = node_to_item((logger_list)->logger.next, struct logger, node); \
((logp) != node_to_item(&(logger_list)->logger, struct logger, node)) && \
((logp)->parent == (logger_list)); \
(logp) = node_to_item((logp)->node.next, struct logger, node))
inline bool android_logger_is_logd(struct logger* logger) {
return reinterpret_cast<uintptr_t>(logger) & LOGGER_LOGD;
}
/* OS specific dribs and drabs */

224
liblog/logger_read.cpp
View File

@ -21,6 +21,7 @@
#include <pthread.h>
#include <sched.h>
#include <stddef.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
@ -32,211 +33,53 @@
#include "log_portability.h"
#include "logger.h"
/* android_logger_alloc unimplemented, no use case */
/* android_logger_free not exported */
static void android_logger_free(struct logger* logger) {
if (!logger) {
return;
}
list_remove(&logger->node);
free(logger);
}
/* android_logger_alloc unimplemented, no use case */
/* method for getting the associated sublog id */
log_id_t android_logger_get_id(struct logger* logger) {
return ((struct logger*)logger)->logId;
return static_cast<log_id_t>(reinterpret_cast<uintptr_t>(logger) & LOGGER_LOG_ID_MASK);
}
static int init_transport_context(struct logger_list* logger_list) {
static struct logger_list* android_logger_list_alloc_internal(int mode, unsigned int tail,
log_time start, pid_t pid) {
auto* logger_list = static_cast<struct logger_list*>(calloc(1, sizeof(struct logger_list)));
if (!logger_list) {
return -EINVAL;
return nullptr;
}
if (list_empty(&logger_list->logger)) {
return -EINVAL;
}
if (logger_list->transport_initialized) {
return 0;
}
logger_list->mode = mode;
logger_list->start = start;
logger_list->tail = tail;
logger_list->pid = pid;
#if (FAKE_LOG_DEVICE == 0)
extern struct android_log_transport_read logdLoggerRead;
extern struct android_log_transport_read pmsgLoggerRead;
struct android_log_transport_read* transport;
transport = (logger_list->mode & ANDROID_LOG_PSTORE) ? &pmsgLoggerRead : &logdLoggerRead;
struct logger* logger;
unsigned logMask = 0;
logger_for_each(logger, logger_list) {
log_id_t logId = logger->logId;
if (logId == LOG_ID_SECURITY && __android_log_uid() != AID_SYSTEM) {
continue;
}
if (transport->read && (!transport->available || transport->available(logId) >= 0)) {
logMask |= 1 << logId;
}
}
if (!logMask) {
return -ENODEV;
}
logger_list->transport_context.transport = transport;
logger_list->transport_context.logMask = logMask;
logger_list->transport_context.transport =
(mode & ANDROID_LOG_PSTORE) ? &pmsgLoggerRead : &logdLoggerRead;
#endif
return 0;
}
#define LOGGER_FUNCTION(logger, def, func, args...) \
ssize_t ret = -EINVAL; \
\
if (!logger) { \
return ret; \
} \
ret = init_transport_context(logger->parent); \
if (ret < 0) { \
return ret; \
} \
\
ret = (def); \
android_log_transport_context* transport_context = &logger->parent->transport_context; \
if (transport_context->logMask & (1 << logger->logId) && transport_context->transport && \
transport_context->transport->func) { \
ssize_t retval = (transport_context->transport->func)(logger, transport_context, ##args); \
if (ret >= 0 || ret == (def)) { \
ret = retval; \
} \
} \
return ret
int android_logger_clear(struct logger* logger) {
LOGGER_FUNCTION(logger, -ENODEV, clear);
}
/* returns the total size of the log's ring buffer */
long android_logger_get_log_size(struct logger* logger) {
LOGGER_FUNCTION(logger, -ENODEV, getSize);
}
int android_logger_set_log_size(struct logger* logger, unsigned long size) {
LOGGER_FUNCTION(logger, -ENODEV, setSize, size);
}
/*
* returns the readable size of the log's ring buffer (that is, amount of the
* log consumed)
*/
long android_logger_get_log_readable_size(struct logger* logger) {
LOGGER_FUNCTION(logger, -ENODEV, getReadableSize);
}
/*
* returns the logger version
*/
int android_logger_get_log_version(struct logger* logger) {
LOGGER_FUNCTION(logger, 4, version);
}
#define LOGGER_LIST_FUNCTION(logger_list, def, func, args...) \
ssize_t ret = init_transport_context(logger_list); \
if (ret < 0) { \
return ret; \
} \
\
ret = (def); \
android_log_transport_context* transport_context = &logger_list->transport_context; \
if (transport_context->transport && transport_context->transport->func) { \
ssize_t retval = (transport_context->transport->func)(logger_list, transport_context, ##args); \
if (ret >= 0 || ret == (def)) { \
ret = retval; \
} \
} \
return ret
/*
* returns statistics
*/
ssize_t android_logger_get_statistics(struct logger_list* logger_list, char* buf, size_t len) {
LOGGER_LIST_FUNCTION(logger_list, -ENODEV, getStats, buf, len);
}
ssize_t android_logger_get_prune_list(struct logger_list* logger_list, char* buf, size_t len) {
LOGGER_LIST_FUNCTION(logger_list, -ENODEV, getPrune, buf, len);
}
int android_logger_set_prune_list(struct logger_list* logger_list, char* buf, size_t len) {
LOGGER_LIST_FUNCTION(logger_list, -ENODEV, setPrune, buf, len);
return logger_list;
}
struct logger_list* android_logger_list_alloc(int mode, unsigned int tail, pid_t pid) {
struct logger_list* logger_list;
logger_list = static_cast<struct logger_list*>(calloc(1, sizeof(*logger_list)));
if (!logger_list) {
return NULL;
}
list_init(&logger_list->logger);
logger_list->mode = mode;
logger_list->tail = tail;
logger_list->pid = pid;
return logger_list;
return android_logger_list_alloc_internal(mode, tail, log_time(0, 0), pid);
}
struct logger_list* android_logger_list_alloc_time(int mode, log_time start, pid_t pid) {
struct logger_list* logger_list;
logger_list = static_cast<struct logger_list*>(calloc(1, sizeof(*logger_list)));
if (!logger_list) {
return NULL;
}
list_init(&logger_list->logger);
logger_list->mode = mode;
logger_list->start = start;
logger_list->pid = pid;
return logger_list;
return android_logger_list_alloc_internal(mode, 0, start, pid);
}
/* android_logger_list_register unimplemented, no use case */
/* android_logger_list_unregister unimplemented, no use case */
/* Open the named log and add it to the logger list */
struct logger* android_logger_open(struct logger_list* logger_list, log_id_t logId) {
struct logger* logger;
if (!logger_list || (logId >= LOG_ID_MAX)) {
return nullptr;
}
logger_for_each(logger, logger_list) {
if (logger->logId == logId) {
return reinterpret_cast<struct logger*>(logger);
}
}
logger_list->log_mask |= 1 << logId;
logger = static_cast<struct logger*>(calloc(1, sizeof(*logger)));
if (!logger) {
return nullptr;
}
logger->logId = logId;
list_add_tail(&logger_list->logger, &logger->node);
logger->parent = logger_list;
// Reset known transport to re-evaluate, since we added a new logger.
logger_list->transport_initialized = false;
return logger;
uintptr_t logger = logId;
logger |= (logger_list->mode & ANDROID_LOG_PSTORE) ? LOGGER_PMSG : LOGGER_LOGD;
return reinterpret_cast<struct logger*>(logger);
}
/* Open the single named log and make it part of a new logger list */
@ -256,10 +99,14 @@ struct logger_list* android_logger_list_open(log_id_t logId, int mode, unsigned
return logger_list;
}
/* Validate log_msg packet, read function has already been null checked */
static int android_transport_read(struct logger_list* logger_list,
struct android_log_transport_context* transp,
struct log_msg* log_msg) {
int android_logger_list_read(struct logger_list* logger_list, struct log_msg* log_msg) {
if (logger_list == nullptr || logger_list->transport_context.transport == nullptr ||
logger_list->log_mask == 0) {
return -EINVAL;
}
android_log_transport_context* transp = &logger_list->transport_context;
int ret = (*transp->transport->read)(logger_list, transp, log_msg);
if (ret <= 0) {
@ -285,17 +132,6 @@ static int android_transport_read(struct logger_list* logger_list,
return ret;
}
/* Read from the selected logs */
int android_logger_list_read(struct logger_list* logger_list, struct log_msg* log_msg) {
int ret = init_transport_context(logger_list);
if (ret < 0) {
return ret;
}
android_log_transport_context* transport_context = &logger_list->transport_context;
return android_transport_read(logger_list, transport_context, log_msg);
}
/* Close all the logs */
void android_logger_list_free(struct logger_list* logger_list) {
if (logger_list == NULL) {
@ -308,11 +144,5 @@ void android_logger_list_free(struct logger_list* logger_list) {
(*transport_context->transport->close)(logger_list, transport_context);
}
while (!list_empty(&logger_list->logger)) {
struct listnode* node = list_head(&logger_list->logger);
struct logger* logger = node_to_item(node, struct logger, node);
android_logger_free((struct logger*)logger);
}
free(logger_list);
}

32
liblog/pmsg_reader.cpp
View File

@ -27,27 +27,16 @@
#include "logger.h"
static int PmsgAvailable(log_id_t logId);
static int PmsgVersion(struct logger* logger, struct android_log_transport_context* transp);
static int PmsgRead(struct logger_list* logger_list, struct android_log_transport_context* transp,
struct log_msg* log_msg);
static void PmsgClose(struct logger_list* logger_list,
struct android_log_transport_context* transp);
static int PmsgClear(struct logger* logger, struct android_log_transport_context* transp);
struct android_log_transport_read pmsgLoggerRead = {
.name = "pmsg",
.available = PmsgAvailable,
.version = PmsgVersion,
.close = PmsgClose,
.read = PmsgRead,
.poll = NULL,
.clear = PmsgClear,
.setSize = NULL,
.getSize = NULL,
.getReadableSize = NULL,
.getPrune = NULL,
.setPrune = NULL,
.getStats = NULL,
};
static int PmsgAvailable(log_id_t logId) {
@ -60,17 +49,6 @@ static int PmsgAvailable(log_id_t logId) {
return -EBADF;
}
static int PmsgClear(struct logger*, struct android_log_transport_context*) {
return unlink("/sys/fs/pstore/pmsg-ramoops-0");
}
/*
* returns the logger version
*/
static int PmsgVersion(struct logger*, struct android_log_transport_context*) {
return 4;
}
static int PmsgRead(struct logger_list* logger_list, struct android_log_transport_context* transp,
struct log_msg* log_msg) {
ssize_t ret;
@ -134,7 +112,7 @@ static int PmsgRead(struct logger_list* logger_list, struct android_log_transpor
}
preread_count = 0;
if ((transp->logMask & (1 << buf.l.id)) &&
if ((logger_list->log_mask & (1 << buf.l.id)) &&
((!logger_list->start.tv_sec && !logger_list->start.tv_nsec) ||
((logger_list->start.tv_sec <= buf.l.realtime.tv_sec) &&
((logger_list->start.tv_sec != buf.l.realtime.tv_sec) ||
@ -232,12 +210,12 @@ ssize_t __android_log_pmsg_file_read(log_id_t logId, char prio, const char* pref
memset(&transp, 0, sizeof(transp));
logger_list.mode = ANDROID_LOG_PSTORE | ANDROID_LOG_NONBLOCK | ANDROID_LOG_RDONLY;
transp.logMask = (unsigned)-1;
logger_list.log_mask = (unsigned)-1;
if (logId != LOG_ID_ANY) {
transp.logMask = (1 << logId);
logger_list.log_mask = (1 << logId);
}
transp.logMask &= ~((1 << LOG_ID_KERNEL) | (1 << LOG_ID_EVENTS) | (1 << LOG_ID_SECURITY));
if (!transp.logMask) {
logger_list.log_mask &= ~((1 << LOG_ID_KERNEL) | (1 << LOG_ID_EVENTS) | (1 << LOG_ID_SECURITY));
if (!logger_list.log_mask) {
return -EINVAL;
}

2
liblog/tests/liblog_benchmark.cpp
View File

@ -913,7 +913,7 @@ static void BM_lookupEventTagNum(benchmark::State& state) {
}
BENCHMARK(BM_lookupEventTagNum);
// Must be functionally identical to liblog internal __send_log_msg.
// Must be functionally identical to liblog internal SendLogdControlMessage()
static void send_to_control(char* buf, size_t len) {
int sock =
socket_local_client("logd", ANDROID_SOCKET_NAMESPACE_RESERVED, SOCK_STREAM | SOCK_CLOEXEC);

10
logcat/logcat.cpp
View File

@ -969,6 +969,16 @@ int Logcat::Run(int argc, char** argv) {
}
}
if (mode & ANDROID_LOG_PSTORE) {
if (clearLog) {
unlink("/sys/fs/pstore/pmsg-ramoops-0");
return EXIT_SUCCESS;
}
if (setLogSize || getLogSize || printStatistics || getPruneList || setPruneList) {
LogcatPanic(HELP_TRUE, "-L is incompatible with -g/-G, -S, and -p/-P");
}
}
std::unique_ptr<logger_list, decltype(&android_logger_list_free)> logger_list{
nullptr, &android_logger_list_free};
if (tail_time != log_time::EPOCH) {