Sage Weil 891d8b4754 log/Log: fix buffer overflow ... If we have a long line that has to be dynamically allocated, we need to adjust m_log_buf_pos accordingly afterward. In particular, _write_and_copy does this adjustment, which means the later += line_used is not only unnecessary but very bad, since line_used is > MAX_LOG_BUF. Simplify all of this by getting rid of _write_and_copy: if we are writing a big chunk let's just send the whole thing to m_fd and not bother keeping the tail of it around for later. Fix _log_safe_write to write the passed buffer, not m_log_buf. Replace the paranoid check with a simple assert. Fixes: 65da5ba216 Fixes: https://github.com/ceph/ceph/pull/23422 Signed-off-by: Sage Weil <sage@redhat.com>		2018-08-06 08:51:28 -05:00
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Entry.h
EntryQueue.h
Log.cc	log/Log: fix buffer overflow	2018-08-06 08:51:28 -05:00
Log.h	log/Log: fix buffer overflow	2018-08-06 08:51:28 -05:00
LogClock.h
SubsystemMap.h
test.cc