tequilaOS/platform_system_core
2
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

Restrict pmsg use to eng builds.

Browse source 
bug 30375418

Change-Id: I50c6c74a2373593495cf6a3b94b31f9a865c950c
This commit is contained in:
Tim Murray 2016-08-22 09:13:24 -07:00
parent 0c28557e58
commit f894b96a92
1 changed files with 21 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

23
liblog/pmsg_writer.c
View file

@ -31,6 +31,8 @@
#include <private/android_filesystem_config.h>
#include <private/android_logger.h>
#include <sys/system_properties.h>
#include "config_write.h"
#include "log_portability.h"
#include "logger.h"
@ -51,8 +53,25 @@ LIBLOG_HIDDEN struct android_log_transport_write pmsgLoggerWrite = {
.write = pmsgWrite,
};
static bool pmsgShouldUse = false;
// Only use pmsg on eng builds
static bool pmsgIsEng() {
char buf[PROP_VALUE_MAX];
if (__system_property_get("ro.build.type", buf) == 0) {
return false;
}
if (!strncmp(buf, "eng", sizeof("eng"))) {
return true;
}
return false;
}
static int pmsgOpen()
{
pmsgShouldUse = pmsgIsEng();
if (pmsgLoggerWrite.context.fd < 0) {
pmsgLoggerWrite.context.fd = TEMP_FAILURE_RETRY(open("/dev/pmsg0", O_WRONLY | O_CLOEXEC));
}
@ -75,7 +94,7 @@ static int pmsgAvailable(log_id_t logId)
}
if ((logId != LOG_ID_SECURITY) &&
(logId != LOG_ID_EVENTS) &&
!__android_log_is_debuggable()) {
(!pmsgShouldUse || !__android_log_is_debuggable())) {
return -EINVAL;
}
if (pmsgLoggerWrite.context.fd < 0) {
@ -105,7 +124,7 @@ static int pmsgWrite(log_id_t logId, struct timespec *ts,
size_t i, payloadSize;
ssize_t ret;
if ((logId == LOG_ID_EVENTS) && !__android_log_is_debuggable()) {
if ((logId == LOG_ID_EVENTS) && (!pmsgShouldUse || !__android_log_is_debuggable())) {
if (vec[0].iov_len < 4) {
return -EINVAL;
}