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fix a panic problem in syscall/socket.rs #26

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fix a panic problem in syscall/socket.rs #26

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6 changes: 5 additions & 1 deletion kernel/src/syscall/socket.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -116,7 +116,11 @@ pub fn sys_bind(fd: usize, addr: *const u8, addr_len: usize) -> SysResult {
}
let fd_manager = task.fd_manager.lock();
if let Ok(file) = fd_manager.get_file(fd) {
let sock = file.as_any().downcast_ref::<Socket>().unwrap().clone();
let sock_any = file.as_any();
if !sock_any.is::<Socket>(){
return Err(ErrorNo::EFAULT);
}
let sock = sock_any.downcast_ref::<Socket>().unwrap().clone();
if let Some(_p) = sock.set_endpoint(addr, false) {
Ok(0)
} else {
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