| // +build linux |
| |
| package gcplogs |
| |
| import ( |
| "os" |
| |
| "github.com/docker/docker/dockerversion" |
| "github.com/docker/docker/pkg/homedir" |
| "github.com/sirupsen/logrus" |
| ) |
| |
| // ensureHomeIfIAmStatic ensure $HOME to be set if dockerversion.IAmStatic is "true". |
| // See issue #29344: gcplogs segfaults (static binary) |
| // If HOME is not set, logging.NewClient() will call os/user.Current() via oauth2/google. |
| // However, in static binary, os/user.Current() leads to segfault due to a glibc issue that won't be fixed |
| // in a short term. (golang/go#13470, https://sourceware.org/bugzilla/show_bug.cgi?id=19341) |
| // So we forcibly set HOME so as to avoid call to os/user/Current() |
| func ensureHomeIfIAmStatic() error { |
| // Note: dockerversion.IAmStatic and homedir.GetStatic() is only available for linux. |
| // So we need to use them in this gcplogging_linux.go rather than in gcplogging.go |
| if dockerversion.IAmStatic == "true" && os.Getenv("HOME") == "" { |
| home, err := homedir.GetStatic() |
| if err != nil { |
| return err |
| } |
| logrus.Warnf("gcplogs requires HOME to be set for static daemon binary. Forcibly setting HOME to %s.", home) |
| os.Setenv("HOME", home) |
| } |
| return nil |
| } |