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Use WriteFully in debuggerd to talk to ActivityManager.

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(cherry picked from commit b7cd09b93e)

Change-Id: Ic81b4134fe563d8ebb15ba4ff3e9b2e8893c97a5
This commit is contained in:
Elliott Hughes 2015-04-24 22:25:12 -07:00
parent 55db2ebca9
commit f5290ee1a7
1 changed files with 3 additions and 16 deletions
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19
debuggerd/utility.cpp
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@ -26,25 +26,12 @@
#include <sys/wait.h>
#include <backtrace/Backtrace.h>
#include <base/file.h>
#include <log/log.h>
const int SLEEP_TIME_USEC = 50000; // 0.05 seconds
const int MAX_TOTAL_SLEEP_USEC = 10000000; // 10 seconds
static int write_to_am(int fd, const char* buf, int len) {
int to_write = len;
while (to_write > 0) {
int written = TEMP_FAILURE_RETRY(write(fd, buf + len - to_write, to_write));
if (written < 0) {
// hard failure
ALOGE("AM write failure (%d / %s)\n", errno, strerror(errno));
return -1;
}
to_write -= written;
}
return len;
}
// Whitelist output desired in the logcat output.
bool is_allowed_in_logcat(enum logtype ltype) {
if ((ltype == ERROR)
@ -82,9 +69,9 @@ void _LOG(log_t* log, enum logtype ltype, const char* fmt, ...) {
if (write_to_logcat) {
__android_log_buf_write(LOG_ID_CRASH, ANDROID_LOG_INFO, LOG_TAG, buf);
if (write_to_activitymanager) {
int written = write_to_am(log->amfd, buf, len);
if (written <= 0) {
if (!android::base::WriteFully(log->amfd, buf, len)) {
// timeout or other failure on write; stop informing the activity manager
ALOGE("AM write failed: %s", strerror(errno));
log->amfd = -1;
}
}