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types: add more mount related constants

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Add more mount related constants.

Signed-off-by: Jiang Liu <gerry@linux.alibaba.com>
This commit is contained in:
Jiang Liu 2023-08-07 10:28:50 +08:00
parent 880e6c9a76
commit 5e867f0538
2 changed files with 13 additions and 7 deletions
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14
src/agent/src/mount.rs
View File

@ -16,6 +16,7 @@ use std::sync::Arc;
use anyhow::{anyhow, Context, Result};
use kata_sys_util::mount::get_linux_mount_info;
use kata_types::mount::{KATA_MOUNT_OPTION_FS_GID, KATA_SHAREDFS_GUEST_PREMOUNT_TAG};
use nix::mount::MsFlags;
use nix::unistd::{Gid, Uid};
use regex::Regex;
@ -39,10 +40,7 @@ use crate::Sandbox;
use crate::{ccw, device::get_virtio_blk_ccw_device_name};
pub const TYPE_ROOTFS: &str = "rootfs";
pub const MOUNT_GUEST_TAG: &str = "kataShared";
// Allocating an FSGroup that owns the pod's volumes
const FS_GID: &str = "fsgid";
const FS_GID_EQ: &str = "fsgid=";
const SYS_FS_HUGEPAGES_PREFIX: &str = "/sys/kernel/mm/hugepages";
@ -233,7 +231,7 @@ async fn ephemeral_storage_handler(
let opts = parse_options(&storage.options);
// ephemeral_storage didn't support mount options except fsGroup.
if let Some(fsgid) = opts.get(FS_GID) {
if let Some(fsgid) = opts.get(KATA_MOUNT_OPTION_FS_GID) {
let gid = fsgid.parse::<u32>()?;
nix::unistd::chown(storage.mount_point.as_str(), None, Some(Gid::from_raw(gid)))?;
@ -360,7 +358,7 @@ async fn local_storage_handler(
let opts = parse_options(&storage.options);
let mut need_set_fsgid = false;
if let Some(fsgid) = opts.get(FS_GID) {
if let Some(fsgid) = opts.get(KATA_MOUNT_OPTION_FS_GID) {
let gid = fsgid.parse::<u32>()?;
nix::unistd::chown(storage.mount_point.as_str(), None, Some(Gid::from_raw(gid)))?;
@ -638,10 +636,12 @@ fn mount_storage(logger: &Logger, storage: &Storage) -> Result<()> {
// There's a special mechanism to create mountpoint from a `sharedfs` instance before
// starting the kata-agent. Check for such cases.
if storage.source == MOUNT_GUEST_TAG && is_mounted(&storage.mount_point)? {
if storage.source == KATA_SHAREDFS_GUEST_PREMOUNT_TAG && is_mounted(&storage.mount_point)? {
warn!(
logger,
"{} already mounted on {}, ignoring...", MOUNT_GUEST_TAG, &storage.mount_point
"{} already mounted on {}, ignoring...",
KATA_SHAREDFS_GUEST_PREMOUNT_TAG,
&storage.mount_point
);
return Ok(());
}

6
src/libs/kata-types/src/mount.rs
View File

@ -14,6 +14,9 @@ pub const KATA_VOLUME_TYPE_PREFIX: &str = "kata:";
/// The Mount should be ignored by the host and handled by the guest.
pub const KATA_GUEST_MOUNT_PREFIX: &str = "kata:guest-mount:";
/// The sharedfs volume is mounted by guest OS before starting the kata-agent.
pub const KATA_SHAREDFS_GUEST_PREMOUNT_TAG: &str = "kataShared";
/// KATA_EPHEMERAL_DEV_TYPE creates a tmpfs backed volume for sharing files between containers.
pub const KATA_EPHEMERAL_VOLUME_TYPE: &str = "ephemeral";
@ -23,6 +26,9 @@ pub const KATA_HOST_DIR_VOLUME_TYPE: &str = "kata:hostdir";
/// KATA_MOUNT_INFO_FILE_NAME is used for the file that holds direct-volume mount info
pub const KATA_MOUNT_INFO_FILE_NAME: &str = "mountInfo.json";
/// Specify `fsgid` for a volume or mount, `fsgid=1`.
pub const KATA_MOUNT_OPTION_FS_GID: &str = "fsgid";
/// KATA_DIRECT_VOLUME_ROOT_PATH is the root path used for concatenating with the direct-volume mount info file path
pub const KATA_DIRECT_VOLUME_ROOT_PATH: &str = "/run/kata-containers/shared/direct-volumes";