debuggerd does not require log/logger.h, can use android/log.h
In some cases, mark why log/logger.h was required.
Test: Compile and boot smoke test
Bug: 26552300
Bug: 31289077
Bug: 31456426
Change-Id: Ia34987e25a01d81971ec8d785415f732b8376c4f
Allows us to mitigate the impact of MAP_PRIVATE and copy on write by
calling android_lookupEventTag_len instead of android_lookupEventTag,
and delaying the copy on write impact to the later. We return a
string length in a supplied location along with the string pointer
with android_lookupEventTag_len(const EventTagMap* map, size_t* len,
int tag). The string is not guaranteed to be nul terminated. Since
android_lookupEventTag() called even once can cause the memory
impact, we will mark it as deprecated, but we currently have no
timeframe for removal since this is a very old interface.
Add an API for __android_log_is_loggable_len() that accepts the non
null terminated content and fixup callers that would gain because the
length is known prior to the call either in the compiler or at
runtime. Tackle transition to android_lookupEventTag_len() and
fixup callers.
On any application that performs logging (eg: com.android.phone)
/proc/<pid>/smaps before:
xxxxxxxxxx-xxxxxxxxxx rw-p 00000000 fd:00 463 /system/etc/event-log-tags
Size: 20 kB
Rss: 20 kB
Pss: 1 kB
Shared_Clean: 0 kB
Shared_Dirty: 20 kB
Private_Clean: 0 kB
Private_Dirty: 0 kB
Referenced: 0 kB
Anonymous: 20 kB
AnonHugePages: 0 kB
Swap: 0 kB
SwapPss: 0 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Locked: 0 kB
VmFlags: rd wr mr mw me ac
/proc/<pid>/smaps after:
xxxxxxxxxx-xxxxxxxxxx rw-p 00000000 fd:00 1773 /system/etc/event-log-tags
Size: 20 kB
Rss: 20 kB
Pss: 1 kB
Shared_Clean: 20 kB (was 0kB)
Shared_Dirty: 0 kB (was 20kB)
Private_Clean: 0 kB
Private_Dirty: 0 kB
Referenced: 20 kB (was 0kB)
Anonymous: 0 kB (was 20kB)
AnonHugePages: 0 kB
Swap: 0 kB
SwapPss: 0 kB
KernelPageSize: 4 kB
MMUPageSize: 4 kB
Locked: 0 kB
VmFlags: rd wr mr mw me ac
Added liblog-unit-tests --gtest_filter=liblog.event_log_tags to
check for Shared_Clean: to not be 0 and Anonymous: to be 0 for
all processes referencing event-log-tags. Which can include multiple
references to /system/etc/event-log-tags and future possible refs to
/data/misc/logd/event-log-tags and /dev/event-log-tags. We want
failure messages to help point to errant code using the deprecated
interface.
This change saves 1/4MB of memory or more on a typical system.
Test: gTest liblog-unit-tests
Bug: 31456426
Change-Id: I9e08e44d9092bd96fe704b5709242e7195281d33
Should use android/log.h instead of log/log.h as a good example
to all others. Adjust header order to comply with Android Coding
standards.
Test: Compile
Bug: 26552300
Bug: 31289077
Change-Id: I33a8fb4e754d2dc4754d335660c450e0a67190fc
Move all liblog related content into android/log.h, and make
log/log.h points to android/log.h.
Test: Compile
Bug: 26552300
Bug: 31289077
Change-Id: I858e0ebe047b86f2a8530a99bc9c380d3d58edbb
Should use log/log.h and in some cases android/log.h instead. Can
not remove file because still in use by partners, so log/logd.h
points to log/log.h.
Test: Compile
Bug: 26552300
Bug: 31289077
Change-Id: I3580d46154617abb7231027a44f4ab9ee023febf
Always used in combination with log/logger.h except in log_time.cpp,
and not used externally. As a result liblog has to support stl, a
small price to pay since goal is to convert liblog to C++ internally.
Test: compile
Bug: 31456426
Bug: 26552300
Bug: 31289077
Change-Id: I72828ec807d0a2c8e40bbdebd7a69f147a7ca5a9
Cleanup.
Save the errno for the calls that fail, and reinstate them for
return. Drop fprintf stutter, one succinct line. Solve a memory
leak in close. Change android_lookupEventTag() to use an
unsigned int so that we can use the full range of uint32_t tags.
Make sure this file compiles clean in C++.
Test: gTest liblog-unit-tests
Bug: 30963384
Bug: 31456426
Change-Id: I6a5efa6fb7e991431caba75ef0971e111968f6bf
system/core/include is included in the global include path using
-isystem, which hides all warnings. Fix warnings in log/log.h
in preparation for moving from -isystem to -I.
log/log.h uses gnu extensions for zero-argument variadic macro token
pasting, which clang warns about with -Weverything. Hide the warnings
using pragmas.
Test: m -j native
Bug: 31492149
Change-Id: Ib2113f877d811a6ecc0e91c035640b506f04bd86
- check hdr_size to make sure it is in the expected range
from sizeof entry_v1 to entry (entry_v4).
- alter msg() method to report NULL on invalid hdr_size
- alter all users of msg() method.
Bug: 30947841
Change-Id: I9bc1740d7aa9f37df5be966c18de1fb9de63d5dd
Most of the system/core/include/log/log.h file uses the C99 syntax of
variadic macros (that is, '...' in parameter list and __VA_ARGS__
in arguments). Except for andoid_printLog and android_printAssert
which still uses GCC custom extension syntax.
Switched the remaining macros to use C99 syntax. GCC extension syntax
makes my editor's code parser puke.
BUG: None
Change-Id: Ia6ebc0f2044b64182c425b179da0229c7046be4a
android_log_write_string8_len(android_log_context ctx,
const char *value, size_t maxlen)
Caps the supplied string to a maxlen length. Alter API to handle
a NULL pointer for the value string for this and
android_log_write_string8() and instead of returning -EINVAL,
act like a null string "" was supplied to preserve the list
location. API is also changed to report the number of characters
actually placed into the android_log_context.
Bug: 27356456
Bug: 19235719
Change-Id: I6a03d405eac1d741555dd05555513ec691e7a46e
Based off an initial request and effort by williamluh@google.com
- Added the following functions:
* Composing and Writing:
android_log_context create_android_logger(uint32_t tag)
int android_log_write_list_begin(android_log_context ctx)
int android_log_write_list_end(android_log_context ctx)
int android_log_write_int32(android_log_context ctx, int32_t value)
int android_log_write_int64(android_log_context ctx, int64_t value)
int android_log_write_string8(android_log_context ctx, const char *value)
int android_log_write_float32(android_log_context ctx, float value)
int android_log_write_list(android_log_context ctx, log_id_t id)
* Reading and Interpreting:
android_log_context create_android_log_parser(const char *msg, size_t len)
android_log_list_element android_log_read_next(android_log_context ctx)
android_log_list_element android_log_peek_next(android_log_context ctx)
* Destroy context used above:
int android_log_destroy(android_log_context *ctx);
- Added unit gTests
We moved implemented android_log_buffer_to_string() to the test since
it is an alternate for already existing logprint functionality.
Please move into liblog should it be of some common use, otherwise
as is it is a good means of stessing the reading and interpreting
handlers.
Signed-off-by: Mark Salyzyn <salyzyn@google.com>
Bug: 19235719
Change-Id: I4aa1927e8e6a75f0a129d15a27c891cf1ccd4f5c
Reduce maximum log payload so that the sum with the maximum
length header logger_entry_v4 is a page size. This is a
performance measure.
Expect side effects, truncates messages 8 bytes earlier. The
length has a long history (2008) so there may be non-C code
somewhere that has it hard-coded rather than reflecting this
header. CTS tests may need to be adjusted.
Bug: 25996918
Change-Id: I598c8c5cc78f6b0afc2c1f30cc6f3c18eb8c4c9d
Extends logger_entry_v3 to add an uid field and moves some fields to
unsigned (easier to have zero'd bit-field for future adjustments).
Still no version field, not crossing that bridge, historical reasons.
Bug: 25996918
Change-Id: I18b7291666c3a5b170d6771a012363a41f2c5847
Return non-zero if ro.device_owner is set and not false
and persist.logd.security is true.
Bug: 26029733
Change-Id: Ie82ae11ae35e9c79017b6e873fefb39d79a1d4fe
If ANDROID_LOG_WRAP is specified, add timeout=3600 to the reader
request. logd will comply by going to sleep with the socket open.
If the start time is about to wrap or get pruned in the specified log
buffers, then wakeup and dump the logs; or wakeup on timeout,
whichever comes first.
Bug: 25929746
Change-Id: I531b4317a20abcf3ba87d78c68fa2f268a4488ab
android_log_timestamp returns the property leading letter,
it is better to return a clockid_t with android_log_clockid()
Bug: 23668800
Change-Id: I38dee773bf3844177826b03a26b03215c79a5359
android_log_timestamp returns the property leading letter,
it is better to return a clockid_t with android_log_clockid()
Bug: 23668800
Change-Id: I3c4e3e6b87f6676950797f1f0e203b44c542ed43
Although ever present, an increased regression introduced with
commit b6bee33182 (liblog: logd:
support logd.timestamp = monotonic).
A signal handler can interrupt in locked context, if log is written
in the signal handler, we are in deadlock. To reduce the contention
and chances for this problem separate out timestamp lock from is
loggable lock to reduce contention situations. Provide a best-guess
response if lock would fail in timestamp path.
Use a common lock() inline within each module, with a comment speaking
to the issues surrounding calling a function that has a mutex within
a signal handler.
ToDo: Hold off signals temporarily in mainline, restart when unblock.
Can not use pthread_sigmask(SIG_BLOCK,,) as it breaks AtCmd.
Signed-off-by: Mark Salyzyn <salyzyn@google.com>
Bug: 25563384
Change-Id: I47e2c87c988c3e359eb9eef129c6a3a08e9eedef
Although ever present, an increased regression introduced with
commit b6bee33182 (liblog: logd:
support logd.timestamp = monotonic).
A signal handler can interrupt in locked context, if log is written
in the signal handler, we are in deadlock. Block signals while we
are locked. Separate out timestamp lock from is loggable lock to
reduce contention situations. Provide a best-guess response if
lock would fail in timestamp path.
Bug: 25563384
Change-Id: I6dccd6b99ebace1c473c03a785a35c63ed5c6a8a
- '-v epoch' prints seconds since Jan 1 1970
- '-v monotonic' print cpu seconds since start of device
- '-T sssss.mmm...' as alternate tail time format
NB: monotonic is a best estimate and may be out by a few ms
given the synchronization source clue accuracy.
Bug: 23668800
Change-Id: Ieb924b6d3817669c7e53beb9c970fb626eaad460
- '-v year' modifier adds the four digit year prefix
- '-v <timezone>' modifier sets and prints the timezone suffix
- Only promise in logcat to support UTC as a timezone since
all others are based on the configured environment
- '-v zone' modifier toggles the timezone suffix on or off
- '-T YYYY-MM-DD HH:MM:SS.mmm...' format is added
Bug: 23668700
Change-Id: I7521c1efb7455dc9a25434fce72a69a65dcf72ea
- added printable format modifier:
logcat -v printable
- opencoded borrowed individual utf8 validity checking algorithm
from utf8_length() in libutils/Unicode.cpp
- if considered basic one-character ASCII, use popular \x escape
sequences for non-printable
- logprint convert to C comments to drop mixed-mode
Bug: 19000361
Change-Id: I122a5b8fb41216fc0bc816178c0b768f3df56586
- Add additional 3 digits of time precision for time output
adding in the reporting of usec
- Remove trailing space in header file
Change-Id: Ifb560850b8e01080e126fbaeab640db71cce3eea
In order to make it easier to find radio system logging
mistakes, if LINT_RLOG is defined we will remove all the
definitions for ALOG* and SLOG*, as well as the log ids
to introduce compile and link errors.
Bug: 20143912
Change-Id: I1511bdce75213f3a5bacdbc4f2ab315aa1fa56fc
Used to pull the Android log messages after a reboot. Adding
an ANDROID_LOG_PSTORE flag to the mode parameter in calls to
android_logger_list_alloc() and android_logger_list_alloc_time().
The side effects are that android_logger_clear() and
android_logger_list_read() will react with the user space
pstore driver. Forms a companion to the pstore console logs.
Change-Id: I7bb07b87b3bf73f059a21af3f810af37c7715b6d
Move away from using POSIX open(2) flags and introduce ANDROID_LOG_* flags to
replace them. Add security by preventing random mode flags from getting into
underlying POSIX calls. ANDROID_LOG_* flags overlap POSIX O_* flag definitions.
Change-Id: Ib32bb64c287e8bf150be62242e1ba46bb37839fc
- take android_testLog from the bonepile and resurrect
- android_testLog is used, and makes sense in its current context
as a holder for Android Logging policy.
- Default level when not specified is ANDROID_LOG_VERBOSE for
eng and userdebug, and ANDROID_LOG_DEBUG for user.
NB: Properties, which are associated with __android_log_is_loggable are
not to be adjusted in user release; it would be useful at that juncture to
return a constant of (0) for VERBOSE, and a (1) for others on user builds.
Or default level to drop to ANDROID_LOG_DEBUG for all in future.
Bug: 17760225
Change-Id: I420b5b8a94d53d664c6a8b13546ebc424a147923
- Add new liblog API __android_log_is_loggable(prio, tag, def)
- future plan to integrate this into the runtime checks and into
the logd daemon for filtration. Inert for now.
Bug: 17760225
Change-Id: I16395b4d42acc08f0209f55a1cbf87b0b2112898
This should probably be in libcutils instead, so code that needs to
care about Windows can use readv/writev.
Change-Id: I7c2ceec3f742cee0e44f69fd4c88459376bd0e08
This patch adds a new '-v color' option to logcat so that the output is
colored similar to the ones in DDMS. Simply type "adb logcat -v color"
to use it. Works well with bash in gnome-terminal. NO GUARANTEE IT WILL
WORK ON A NON xterm STYLE TERMINAL.
Signed-off-by: Michael Zimmermann <sigmaepsilon92@gmail.com>
Signed-off-by: Mark Salyzyn <salyzyn@google.com>
Change-Id: I9189c5f27fed991579edbcbc6834536eb8112152
Implement LOG_EVENT_STRING, so that native code can create new
event log entries. This is needed to support logging SELinux denials
to the event log.
Change-Id: I6a269a832bc2f5e5da6c9dbd169ed2f901b49166
