mirror of
https://github.com/opencontainers/runc.git
synced 2026-07-10 21:53:57 +08:00
Kir Kolyshkin
f77fb7a3ee
This function is somewhat strange and I always wanted to remove it, as it tries to satisfy both init.go and main.go, which have somewhat different needs. It is more straightforward and readable to configure logrus directly. While at it, simplify errors on panic (errors from logrus.ParseLevel and strconv.Atoi already contain value which they fail to parse, and panic already contains enough context to figure out what's wrong). 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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logLevel, err := logrus.ParseLevel(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(logLevel)
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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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