[PATCH proxmox-datacenter-manager v5 3/3] pdm-config: wire user+acl cache generation

[Samuel Rufinatscha <s.rufinatscha@proxmox.com>]

Rename ConfigVersionCache’s user_cache_generation to
user_and_acl_generation to match AccessControlConfig::cache_generation
and increment_cache_generation semantics: it expects the same shared
generation for both user and ACL configs.

Safety: no layout change, the shared-memory size and field order remain
unchanged.

Signed-off-by: Samuel Rufinatscha <s.rufinatscha@proxmox.com>
---
Changes from v4 to v5:
* Rebased

 lib/pdm-config/src/access_control.rs       | 11 +++++++++++
 lib/pdm-config/src/config_version_cache.rs | 16 ++++++++--------
 2 files changed, 19 insertions(+), 8 deletions(-)

diff --git a/lib/pdm-config/src/access_control.rs b/lib/pdm-config/src/access_control.rs
index 389b3f4..1d498d3 100644
--- a/lib/pdm-config/src/access_control.rs
+++ b/lib/pdm-config/src/access_control.rs
@@ -7,6 +7,17 @@ impl proxmox_access_control::init::AccessControlConfig for AccessControlConfig {
         &pdm_api_types::AccessControlPermissions
     }
 
+    fn cache_generation(&self) -> Option<usize> {
+        crate::ConfigVersionCache::new()
+            .ok()
+            .map(|c| c.user_and_acl_generation())
+    }
+
+    fn increment_cache_generation(&self) -> Result<(), Error> {
+        let c = crate::ConfigVersionCache::new()?;
+        Ok(c.increase_user_and_acl_generation())
+    }
+
     fn token_shadow_cache_generation(&self) -> Option<usize> {
         crate::ConfigVersionCache::new()
             .ok()
diff --git a/lib/pdm-config/src/config_version_cache.rs b/lib/pdm-config/src/config_version_cache.rs
index 933140c..f3d52a0 100644
--- a/lib/pdm-config/src/config_version_cache.rs
+++ b/lib/pdm-config/src/config_version_cache.rs
@@ -21,8 +21,8 @@ use proxmox_shared_memory::*;
 #[repr(C)]
 struct ConfigVersionCacheDataInner {
     magic: [u8; 8],
-    // User (user.cfg) cache generation/version.
-    user_cache_generation: AtomicUsize,
+    // User (user.cfg) and ACL (acl.cfg) generation/version.
+    user_and_acl_generation: AtomicUsize,
     // Traffic control (traffic-control.cfg) generation/version.
     traffic_control_generation: AtomicUsize,
     // Tracks updates to the remote/hostname/nodename mapping cache.
@@ -126,19 +126,19 @@ impl ConfigVersionCache {
         Ok(Arc::new(Self { shmem }))
     }
 
-    /// Returns the user cache generation number.
-    pub fn user_cache_generation(&self) -> usize {
+    /// Returns the user and ACL cache generation number.
+    pub fn user_and_acl_generation(&self) -> usize {
         self.shmem
             .data()
-            .user_cache_generation
+            .user_and_acl_generation
             .load(Ordering::Acquire)
     }
 
-    /// Increase the user cache generation number.
-    pub fn increase_user_cache_generation(&self) {
+    /// Increase the user and ACL cache generation number.
+    pub fn increase_user_and_acl_generation(&self) {
         self.shmem
             .data()
-            .user_cache_generation
+            .user_and_acl_generation
             .fetch_add(1, Ordering::AcqRel);
     }
 
-- 
2.47.3