[pbs-devel] [PATCH proxmox-backup] fix #5439: disallow creation of datastore in root

[Gabriel Goller]

Creating a datastore in root ('/') works, but afterwards gc fails (can't
traverse all directories). It might be sensible to restrict this and
disallow creation of datastores in the root directory.

Signed-off-by: Gabriel Goller <g.goller at proxmox.com>
---
 src/api2/config/datastore.rs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/api2/config/datastore.rs b/src/api2/config/datastore.rs
index 6b742acb..671f07e9 100644
--- a/src/api2/config/datastore.rs
+++ b/src/api2/config/datastore.rs
@@ -1,7 +1,7 @@
 use std::path::PathBuf;
 
 use ::serde::{Deserialize, Serialize};
-use anyhow::Error;
+use anyhow::{bail, Error};
 use hex::FromHex;
 use serde_json::Value;
 
@@ -74,6 +74,10 @@ pub(crate) fn do_create_datastore(
 ) -> Result<(), Error> {
     let path: PathBuf = datastore.path.clone().into();
 
+    if path.parent().is_none() {
+        bail!("cannot create datastore in root path");
+    }
+
     let tuning: DatastoreTuning = serde_json::from_value(
         DatastoreTuning::API_SCHEMA
             .parse_property_string(datastore.tuning.as_deref().unwrap_or(""))?,
-- 
2.43.0