[PATCH proxmox-backup v4 10/14] datastore: create lockdir with correct mode for backup user access

[Christian Ebner <c.ebner@proxmox.com>]

Since the helper can now also get called via the privileged api
server, running as root, assure the base lock directories are created
so user backup can access them.

Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
---
 pbs-datastore/src/lib.rs | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/pbs-datastore/src/lib.rs b/pbs-datastore/src/lib.rs
index 5e6dca4ab..c1d32903a 100644
--- a/pbs-datastore/src/lib.rs
+++ b/pbs-datastore/src/lib.rs
@@ -162,6 +162,8 @@ use std::path::Path;
 
 use anyhow::{Error, bail};
 
+use proxmox_sys::fs::CreateOptions;
+
 use pbs_config::BackupLockGuard;
 
 /// Directory path where active operations counters are saved.
@@ -262,7 +264,13 @@ where
         lock_dir = lock_dir.join(parent);
     };
 
-    std::fs::create_dir_all(&lock_dir)?;
+    let backup_user = proxmox_product_config::get_api_user();
+    let dir_create_options = CreateOptions::new()
+        .perm(nix::sys::stat::Mode::from_bits_truncate(0o755))
+        .owner(backup_user.uid)
+        .group(backup_user.gid);
+
+    proxmox_sys::fs::create_path(lock_dir, Some(dir_create_options), Some(dir_create_options))?;
 
     let lock = lock_fn(path)?;
 
-- 
2.47.3