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daemon: use 0711 for /var/lib/docker

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This fixes problems encountered when running with a remapped root (the
syscalls related to the metadata directory will fail under user
namespaces). Using 0711 rather than 0701 (which solved the problem
previously) fixes the issue.

Signed-off-by: Aleksa Sarai <asarai@suse.de>
This commit is contained in:
Aleksa Sarai 2016-03-16 19:24:03 +11:00
parent 2b1b235acf
commit e91ca0e239
1 changed files with 4 additions and 4 deletions
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8
daemon/daemon_unix.go
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@ -870,7 +870,7 @@ func setupRemappedRoot(config *Config) ([]idtools.IDMap, []idtools.IDMap, error)
func setupDaemonRoot(config *Config, rootDir string, rootUID, rootGID int) error {
config.Root = rootDir
// the docker root metadata directory needs to have execute permissions for all users (o+x)
// the docker root metadata directory needs to have execute permissions for all users (g+x,o+x)
// so that syscalls executing as non-root, operating on subdirectories of the graph root
// (e.g. mounted layers of a container) can traverse this path.
// The user namespace support will create subdirectories for the remapped root host uid:gid
@ -878,12 +878,12 @@ func setupDaemonRoot(config *Config, rootDir string, rootUID, rootGID int) error
// layer content subtrees.
if _, err := os.Stat(rootDir); err == nil {
// root current exists; verify the access bits are correct by setting them
if err = os.Chmod(rootDir, 0701); err != nil {
if err = os.Chmod(rootDir, 0711); err != nil {
return err
}
} else if os.IsNotExist(err) {
// no root exists yet, create it 0701 with root:root ownership
if err := os.MkdirAll(rootDir, 0701); err != nil {
// no root exists yet, create it 0711 with root:root ownership
if err := os.MkdirAll(rootDir, 0711); err != nil {
return err
}
}