diff options
Diffstat (limited to 'runsc/main.go')
| -rw-r--r-- | runsc/main.go | 25 |
1 files changed, 14 insertions, 11 deletions
diff --git a/runsc/main.go b/runsc/main.go index 773ec6486..0c9b9af78 100644 --- a/runsc/main.go +++ b/runsc/main.go @@ -17,13 +17,11 @@ package main import ( - "fmt" "io" "os" "path/filepath" "strings" "syscall" - "time" "context" "flag" @@ -32,6 +30,7 @@ import ( "gvisor.googlesource.com/gvisor/pkg/log" "gvisor.googlesource.com/gvisor/runsc/boot" "gvisor.googlesource.com/gvisor/runsc/cmd" + "gvisor.googlesource.com/gvisor/runsc/specutils" ) var ( @@ -48,6 +47,8 @@ var ( // Debugging flags. debugLogDir = flag.String("debug-log-dir", "", "additional location for logs. It creates individual log files per command") logPackets = flag.Bool("log-packets", false, "enable network packet logging") + logFD = flag.Int("log-fd", -1, "file descriptor to log to. If set, the 'log' flag is ignored.") + debugLogFD = flag.Int("debug-log-fd", -1, "file descriptor to write debug logs to. If set, the 'debug-log-dir' flag is ignored.") // Debugging flags: strace related strace = flag.Bool("strace", false, "enable strace") @@ -64,6 +65,7 @@ var ( panicSignal = flag.Int("panic-signal", -1, "register signal handling that panics. Usually set to SIGUSR2(12) to troubleshoot hangs. -1 disables it.") ) +// gitRevision is set during linking. var gitRevision = "" func main() { @@ -152,7 +154,9 @@ func main() { } var logFile io.Writer = os.Stderr - if *logFilename != "" { + if *logFD > -1 { + logFile = os.NewFile(uintptr(*logFD), "log file") + } else if *logFilename != "" { // We must set O_APPEND and not O_TRUNC because Docker passes // the same log file for all commands (and also parses these // log files), so we can't destroy them on each command. @@ -173,18 +177,17 @@ func main() { cmd.Fatalf("invalid log format %q, must be 'json' or 'text'", *logFormat) } - if *debugLogDir != "" { + if *debugLogFD > -1 { + f := os.NewFile(uintptr(*debugLogFD), "debug log file") + e = log.MultiEmitter{e, log.GoogleEmitter{&log.Writer{Next: f}}} + } else if *debugLogDir != "" { if err := os.MkdirAll(*debugLogDir, 0775); err != nil { cmd.Fatalf("error creating dir %q: %v", *debugLogDir, err) } - - // Format: <debug-log-dir>/runsc.log.<yyymmdd-hhmmss.uuuuuu>.<command> - scmd := flag.CommandLine.Arg(0) - filename := fmt.Sprintf("runsc.log.%s.%s", time.Now().Format("20060102-150405.000000"), scmd) - path := filepath.Join(*debugLogDir, filename) - f, err := os.OpenFile(path, os.O_WRONLY|os.O_CREATE|os.O_APPEND, 0664) + subcommand := flag.CommandLine.Arg(0) + f, err := specutils.DebugLogFile(*debugLogDir, subcommand) if err != nil { - cmd.Fatalf("error opening log file %q: %v", filename, err) + cmd.Fatalf("error opening debug log file in %q: %v", *debugLogDir, err) } e = log.MultiEmitter{e, log.GoogleEmitter{&log.Writer{Next: f}}} } |