Implement /dev/sbl_srv file

src/kernel/src/fs/dev/cdev.rs

@@ -195,6 +195,7 @@ bitflags! {
     #[derive(Debug, Clone, Copy)]
     pub struct DriverFlags: u32 {
         const D_NEEDMINOR = 0x00800000;
+        const D_INIT = 0x80000000;
     }
 }
 

src/kernel/src/fs/mod.rs

@@ -25,7 +25,7 @@ pub use self::perm::*;
 pub use self::stat::*;
 pub use self::vnode::*;
 
-mod dev;
+pub mod dev;
 mod dirent;
 mod file;
 mod host;

src/kernel/src/main.rs

@@ -14,6 +14,7 @@ use crate::osem::OsemManager;
 use crate::process::{VProc, VProcInitError, VThread};
 use crate::regmgr::RegMgr;
 use crate::rtld::{LoadFlags, ModuleFlags, RuntimeLinker};
+use crate::sbl::SblManager;
 use crate::shm::SharedMemoryManager;
 use crate::syscalls::Syscalls;
 use crate::sysctl::Sysctl;
@@ -54,6 +55,7 @@ mod osem;
 mod process;
 mod regmgr;
 mod rtld;
+mod sbl;
 mod shm;
 mod signal;
 mod syscalls;
@@ -278,6 +280,7 @@ fn run<E: crate::ee::ExecutionEngine>(
     TimeManager::new(&mut syscalls);
     KernelQueueManager::new(&mut syscalls);
     NetManager::new(&mut syscalls);
+    SblManager::new();
 
     // TODO: Get correct budget name from the PS4.
     let budget_id = budget.create(Budget::new("big app", ProcType::BigApp));

src/kernel/src/sbl/mod.rs

@@ -0,0 +1,45 @@
+use std::sync::Arc;
+
+use crate::{
+    errno::Errno,
+    fs::{make_dev, Cdev, CdevSw, DriverFlags, MakeDev, Mode, OpenFlags},
+    process::VThread,
+    ucred::{Gid, Uid},
+};
+
+#[derive(Debug)]
+pub struct SblManager {}
+
+impl SblManager {
+    pub fn new() -> Arc<Self> {
+        let sbl = Arc::new(Self {});
+
+        let sbl_srv_cdevsw = Arc::new(CdevSw::new(
+            DriverFlags::D_INIT,
+            Some(Self::sbl_srv_open),
+            None,
+        ));
+
+        let _ = make_dev(
+            &sbl_srv_cdevsw,
+            0,
+            "sbl_srv",
+            Uid::ROOT,
+            Gid::ROOT,
+            Mode::new(0o600).unwrap(),
+            None,
+            MakeDev::MAKEDEV_ETERNAL,
+        );
+
+        sbl
+    }
+
+    fn sbl_srv_open(
+        _: &Arc<Cdev>,
+        _: OpenFlags,
+        _: i32,
+        _: Option<&VThread>,
+    ) -> Result<(), Box<dyn Errno>> {
+        todo!()
+    }
+}