From 4c70b8a94b22b31e2c39ee710dcc21cc2f3fb337 Mon Sep 17 00:00:00 2001 From: umohnani8 Date: Wed, 8 Aug 2018 09:50:15 -0400 Subject: Add "podman volume" command Add support for podman volume and its subcommands. The commands supported are: podman volume create podman volume inspect podman volume ls podman volume rm podman volume prune This is a tool to manage volumes used by podman. For now it only handle named volumes, but eventually it will handle all volumes used by podman. Signed-off-by: umohnani8 --- pkg/util/utils.go | 52 +++++++++++++++++++++++++++++++++++++++------------- 1 file changed, 39 insertions(+), 13 deletions(-) (limited to 'pkg/util') diff --git a/pkg/util/utils.go b/pkg/util/utils.go index e483253a4..f567f2675 100644 --- a/pkg/util/utils.go +++ b/pkg/util/utils.go @@ -250,30 +250,40 @@ func GetRootlessRuntimeDir() (string, error) { return runtimeDir, nil } -// GetRootlessStorageOpts returns the storage ops for containers running as non root -func GetRootlessStorageOpts() (storage.StoreOptions, error) { - var opts storage.StoreOptions - +// GetRootlessDirInfo returns the parent path of where the storage for containers and +// volumes will be in rootless mode +func GetRootlessDirInfo() (string, string, error) { rootlessRuntime, err := GetRootlessRuntimeDir() if err != nil { - return opts, err + return "", "", err } - opts.RunRoot = rootlessRuntime dataDir := os.Getenv("XDG_DATA_HOME") if dataDir == "" { home := os.Getenv("HOME") if home == "" { - return opts, fmt.Errorf("neither XDG_DATA_HOME nor HOME was set non-empty") + return "", "", fmt.Errorf("neither XDG_DATA_HOME nor HOME was set non-empty") } // runc doesn't like symlinks in the rootfs path, and at least // on CoreOS /home is a symlink to /var/home, so resolve any symlink. resolvedHome, err := filepath.EvalSymlinks(home) if err != nil { - return opts, errors.Wrapf(err, "cannot resolve %s", home) + return "", "", errors.Wrapf(err, "cannot resolve %s", home) } dataDir = filepath.Join(resolvedHome, ".local", "share") } + return dataDir, rootlessRuntime, nil +} + +// GetRootlessStorageOpts returns the storage opts for containers running as non root +func GetRootlessStorageOpts() (storage.StoreOptions, error) { + var opts storage.StoreOptions + + dataDir, rootlessRuntime, err := GetRootlessDirInfo() + if err != nil { + return opts, err + } + opts.RunRoot = rootlessRuntime opts.GraphRoot = filepath.Join(dataDir, "containers", "storage") if path, err := exec.LookPath("fuse-overlayfs"); err == nil { opts.GraphDriverName = "overlay" @@ -284,6 +294,15 @@ func GetRootlessStorageOpts() (storage.StoreOptions, error) { return opts, nil } +// GetRootlessVolumeInfo returns where all the name volumes will be created in rootless mode +func GetRootlessVolumeInfo() (string, error) { + dataDir, _, err := GetRootlessDirInfo() + if err != nil { + return "", err + } + return filepath.Join(dataDir, "containers", "storage", "volumes"), nil +} + type tomlOptionsConfig struct { MountProgram string `toml:"mount_program"` } @@ -313,14 +332,21 @@ func getTomlStorage(storeOptions *storage.StoreOptions) *tomlConfig { return config } -// GetDefaultStoreOptions returns the default storage options for containers. -func GetDefaultStoreOptions() (storage.StoreOptions, error) { +// GetDefaultStoreOptions returns the storage ops for containers and the volume path +// for the volume API +// It also returns the path where all named volumes will be created using the volume API +func GetDefaultStoreOptions() (storage.StoreOptions, string, error) { storageOpts := storage.DefaultStoreOptions + volumePath := "/var/lib/containers/storage" if rootless.IsRootless() { var err error storageOpts, err = GetRootlessStorageOpts() if err != nil { - return storageOpts, err + return storageOpts, volumePath, err + } + volumePath, err = GetRootlessVolumeInfo() + if err != nil { + return storageOpts, volumePath, err } storageConf := filepath.Join(os.Getenv("HOME"), ".config/containers/storage.conf") @@ -330,7 +356,7 @@ func GetDefaultStoreOptions() (storage.StoreOptions, 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 storageOpts, errors.Wrapf(err, "cannot open %s", storageConf) + return storageOpts, volumePath, errors.Wrapf(err, "cannot open %s", storageConf) } tomlConfiguration := getTomlStorage(&storageOpts) @@ -341,5 +367,5 @@ func GetDefaultStoreOptions() (storage.StoreOptions, error) { } } } - return storageOpts, nil + return storageOpts, volumePath, nil } -- cgit v1.2.3-54-g00ecf