mirror of
https://github.com/opencontainers/runc.git
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6c4a3b13d1
Instead of passing _LIBCONTAINER_LOGLEVEL as a string (like "debug" or "info"), use a numeric value. Also, simplify the init log level passing code -- since we actually use the same level as the runc binary, just get it from logrus. This is a preparation for the next commit. Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
44 lines
1.1 KiB
Go
44 lines
1.1 KiB
Go
package main
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import (
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"os"
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"runtime"
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"strconv"
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"github.com/opencontainers/runc/libcontainer"
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_ "github.com/opencontainers/runc/libcontainer/nsenter"
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"github.com/sirupsen/logrus"
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)
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func init() {
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if len(os.Args) > 1 && os.Args[1] == "init" {
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// This is the golang entry point for runc init, executed
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// before main() but after libcontainer/nsenter's nsexec().
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runtime.GOMAXPROCS(1)
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runtime.LockOSThread()
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level, err := strconv.Atoi(os.Getenv("_LIBCONTAINER_LOGLEVEL"))
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if err != nil {
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panic(err)
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}
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logPipeFd, err := strconv.Atoi(os.Getenv("_LIBCONTAINER_LOGPIPE"))
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if err != nil {
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panic(err)
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}
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logrus.SetLevel(logrus.Level(level))
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logrus.SetOutput(os.NewFile(uintptr(logPipeFd), "logpipe"))
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logrus.SetFormatter(new(logrus.JSONFormatter))
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logrus.Debug("child process in init()")
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factory, _ := libcontainer.New("")
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if err := factory.StartInitialization(); err != nil {
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// as the error is sent back to the parent there is no need to log
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// or write it to stderr because the parent process will handle this
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os.Exit(1)
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}
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panic("libcontainer: container init failed to exec")
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}
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}
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