Fix reachable unwrap panic in `check_sem()`

2024-08-23 17:15:18 +08:00 · 2024-08-23 17:15:18 +08:00 · 42f70fd779
parent a039b58f8b
commit 42f70fd779
1 changed files with 3 additions and 0 deletions
--- a/kernel/aster-nix/src/syscall/semget.rs
+++ b/kernel/aster-nix/src/syscall/semget.rs
@ -16,6 +16,9 @@ pub fn sys_semget(key: i32, nsems: i32, semflags: i32, ctx: &Context) -> Result<
    if nsems < 0 || nsems as usize > SEMMSL {
        return_errno!(Errno::EINVAL);
    }
+    if key < 0 {
+        return_errno!(Errno::EINVAL);
+    }

    let flags = IpcFlags::from_bits_truncate(semflags as u32);
    let mode: u16 = (semflags as u32 & 0x1FF) as u16;