utils: split generation and writing of storage.conf

split the generation for the default storage.conf and when we write it
if not existing for a rootless user.

This is necessary because during the startup we might be overriding
the default configuration through --storage-driver and --storage-opt,
that would not be written down to the storage.conf file we generated.

Closes: https://github.com/containers/libpod/issues/2659

Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
This commit is contained in:
Giuseppe Scrivano 2019-03-17 10:44:04 +01:00
parent ea0b36bcbb
commit 232b46a374
No known key found for this signature in database
GPG key ID: E4730F97F60286ED
2 changed files with 46 additions and 35 deletions

View file

@ -505,17 +505,27 @@ func newRuntimeFromConfig(userConfigPath string, options ...RuntimeOption) (runt
return nil, errors.Wrapf(err, "error configuring runtime")
}
}
if !foundConfig && rootlessConfigPath != "" {
os.MkdirAll(filepath.Dir(rootlessConfigPath), 0755)
file, err := os.OpenFile(rootlessConfigPath, os.O_RDWR|os.O_CREATE|os.O_EXCL, 0666)
if err != nil && !os.IsExist(err) {
return nil, errors.Wrapf(err, "cannot open file %s", rootlessConfigPath)
if rootlessConfigPath != "" {
// storage.conf
storageConfFile := util.StorageConfigFile()
if _, err := os.Stat(storageConfFile); os.IsNotExist(err) {
if err := util.WriteStorageConfigFile(&runtime.config.StorageConfig, storageConfFile); err != nil {
return nil, errors.Wrapf(err, "cannot write config file %s", storageConfFile)
}
}
if err == nil {
defer file.Close()
enc := toml.NewEncoder(file)
if err := enc.Encode(runtime.config); err != nil {
os.Remove(rootlessConfigPath)
if !foundConfig {
os.MkdirAll(filepath.Dir(rootlessConfigPath), 0755)
file, err := os.OpenFile(rootlessConfigPath, os.O_RDWR|os.O_CREATE|os.O_EXCL, 0666)
if err != nil && !os.IsExist(err) {
return nil, errors.Wrapf(err, "cannot open file %s", rootlessConfigPath)
}
if err == nil {
defer file.Close()
enc := toml.NewEncoder(file)
if err := enc.Encode(runtime.config); err != nil {
os.Remove(rootlessConfigPath)
}
}
}
}

View file

@ -311,36 +311,37 @@ func GetDefaultStoreOptions() (storage.StoreOptions, error) {
storageOpts = storage.StoreOptions{}
storage.ReloadConfigurationFile(storageConf, &storageOpts)
}
if rootless.IsRootless() {
if os.IsNotExist(err) {
os.MkdirAll(filepath.Dir(storageConf), 0755)
file, err := os.OpenFile(storageConf, os.O_RDWR|os.O_CREATE|os.O_EXCL, 0666)
if err != nil {
return storageOpts, errors.Wrapf(err, "cannot open %s", storageConf)
}
tomlConfiguration := getTomlStorage(&storageOpts)
defer file.Close()
enc := toml.NewEncoder(file)
if err := enc.Encode(tomlConfiguration); err != nil {
os.Remove(storageConf)
}
} else if err == nil {
// If the file did not specify a graphroot or runroot,
// set sane defaults so we don't try and use root-owned
// directories
if storageOpts.RunRoot == "" {
storageOpts.RunRoot = defaultRootlessRunRoot
}
if storageOpts.GraphRoot == "" {
storageOpts.GraphRoot = defaultRootlessGraphRoot
}
if rootless.IsRootless() && err == nil {
// If the file did not specify a graphroot or runroot,
// set sane defaults so we don't try and use root-owned
// directories
if storageOpts.RunRoot == "" {
storageOpts.RunRoot = defaultRootlessRunRoot
}
if storageOpts.GraphRoot == "" {
storageOpts.GraphRoot = defaultRootlessGraphRoot
}
}
return storageOpts, nil
}
// WriteStorageConfigFile writes the configuration to a file
func WriteStorageConfigFile(storageOpts *storage.StoreOptions, storageConf string) error {
os.MkdirAll(filepath.Dir(storageConf), 0755)
file, err := os.OpenFile(storageConf, os.O_RDWR|os.O_CREATE|os.O_EXCL, 0666)
if err != nil {
return errors.Wrapf(err, "cannot open %s", storageConf)
}
tomlConfiguration := getTomlStorage(storageOpts)
defer file.Close()
enc := toml.NewEncoder(file)
if err := enc.Encode(tomlConfiguration); err != nil {
os.Remove(storageConf)
return err
}
return nil
}
// StorageConfigFile returns the path to the storage config file used
func StorageConfigFile() string {
if rootless.IsRootless() {