move user configuration to pbs_config workspace

Also moved memcom.rs and cached_user_info.rs

src/tools/memcom.rs

@@ -1,81 +0,0 @@
-//! Memory based communication channel between proxy & daemon for things such as cache
-//! invalidation.
-
-use std::os::unix::io::AsRawFd;
-use std::sync::atomic::{AtomicUsize, Ordering};
-use std::sync::Arc;
-
-use anyhow::Error;
-use nix::fcntl::OFlag;
-use nix::sys::mman::{MapFlags, ProtFlags};
-use nix::sys::stat::Mode;
-use once_cell::sync::OnceCell;
-
-use proxmox::tools::fs::CreateOptions;
-use proxmox::tools::mmap::Mmap;
-
-/// In-memory communication channel.
-pub struct Memcom {
-    mmap: Mmap<u8>,
-}
-
-#[repr(C)]
-struct Head {
-    // User (user.cfg) cache generation/version.
-    user_cache_generation: AtomicUsize,
-}
-
-static INSTANCE: OnceCell<Arc<Memcom>> = OnceCell::new();
-
-const MEMCOM_FILE_PATH: &str = pbs_buildcfg::rundir!("/proxmox-backup-memcom");
-const EMPTY_PAGE: [u8; 4096] = [0u8; 4096];
-
-impl Memcom {
-    /// Open the memory based communication channel singleton.
-    pub fn new() -> Result<Arc<Self>, Error> {
-        INSTANCE.get_or_try_init(Self::open).map(Arc::clone)
-    }
-
-    // Actual work of `new`:
-    fn open() -> Result<Arc<Self>, Error> {
-        let user = pbs_config::backup_user()?;
-        let options = CreateOptions::new()
-            .perm(Mode::from_bits_truncate(0o660))
-            .owner(user.uid)
-            .group(user.gid);
-
-        let file = proxmox::tools::fs::atomic_open_or_create_file(
-            MEMCOM_FILE_PATH,
-            OFlag::O_RDWR | OFlag::O_CLOEXEC,
-            &EMPTY_PAGE, options)?;
-
-        let mmap = unsafe {
-            Mmap::<u8>::map_fd(
-                file.as_raw_fd(),
-                0,
-                4096,
-                ProtFlags::PROT_READ | ProtFlags::PROT_WRITE,
-                MapFlags::MAP_SHARED | MapFlags::MAP_NORESERVE | MapFlags::MAP_POPULATE,
-            )?
-        };
-
-        Ok(Arc::new(Self { mmap }))
-    }
-
-    // Shortcut to get the mapped `Head` as a `Head`.
-    fn head(&self) -> &Head {
-        unsafe { &*(self.mmap.as_ptr() as *const u8 as *const Head) }
-    }
-
-    /// Returns the user cache generation number.
-    pub fn user_cache_generation(&self) -> usize {
-        self.head().user_cache_generation.load(Ordering::Acquire)
-    }
-
-    /// Increase the user cache generation number.
-    pub fn increase_user_cache_generation(&self) {
-        self.head()
-            .user_cache_generation
-            .fetch_add(1, Ordering::AcqRel);
-    }
-}

src/tools/mod.rs

@@ -28,9 +28,6 @@ pub mod config;
 pub mod daemon;
 pub mod disks;
 
-mod memcom;
-pub use memcom::Memcom;
-
 pub mod serde_filter;
 pub mod statistics;
 pub mod subscription;