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Add syscall eventfd and eventfd2

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This commit is contained in:
Jianfeng Jiang
2023-12-04 07:21:31 +00:00
committed by Tate, Hongliang Tian
parent ccc4e6ec6b
commit 078f9a8891
12 changed files with 378 additions and 19 deletions
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10
kernel/aster-nix/src/syscall/read.rs
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@ -9,9 +9,13 @@ pub fn sys_read(fd: FileDesc, user_buf_addr: Vaddr, buf_len: usize) -> Result<Sy
"fd = {}, user_buf_ptr = 0x{:x}, buf_len = 0x{:x}",
fd, user_buf_addr, buf_len
);
let current = current!();
let file_table = current.file_table().lock();
let file = file_table.get_file(fd)?;
let file = {
let current = current!();
let file_table = current.file_table().lock();
file_table.get_file(fd)?.clone()
};
let mut read_buf = vec![0u8; buf_len];
let read_len = file.read(&mut read_buf)?;
write_bytes_to_user(user_buf_addr, &read_buf)?;