kotovalexarian-likes-github/moby--moby
1
0
Fork 0
mirror of https://github.com/moby/moby.git synced 2022-11-09 12:21:53 -05:00
Code Releases Activity

Merge pull request #31263 from nalind/journal-doublefree

Browse source 
Synchronize the cursor returned by followJournal
This commit is contained in:
Alexander Morozov 2017-02-22 17:45:49 -08:00 committed by GitHub
commit b3e7f70137
1 changed files with 5 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
daemon/logger/journald/read.go
View file

@ -249,6 +249,8 @@ func (s *journald) followJournal(logWatcher *logger.LogWatcher, config logger.Re
s.readers.readers[logWatcher] = logWatcher
s.readers.mu.Unlock()
newCursor := make(chan *C.char)
go func() {
for {
// Keep copying journal data out until we're notified to stop
@ -276,6 +278,7 @@ func (s *journald) followJournal(logWatcher *logger.LogWatcher, config logger.Re
delete(s.readers.readers, logWatcher)
s.readers.mu.Unlock()
close(logWatcher.Msg)
newCursor <- cursor
}()
// Wait until we're told to stop.
@ -285,6 +288,8 @@ func (s *journald) followJournal(logWatcher *logger.LogWatcher, config logger.Re
C.close(pfd[1])
}
cursor = <-newCursor
return cursor
}