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syscall

import syscall

syscall 底层的系统维度的标准库，其用于和操作系统交互，会深入到与 C 语言交互的层面。基本都还原了 linux 系统调用，与系统调用参数一致，所以不详细介绍每个系统调用的作用。其中每一个系统调用都会受到操作系统的影响产生错误，可以使用 try 捕获错误。

内容​

https://github.com/nature-lang/nature/blob/master/std/syscall/main.linux.n

使用示例​

https://github.com/nature-lang/nature/blob/master/tests/blackbox/cases/20230728_00_fork_exec.n

https://github.com/nature-lang/nature/tree/master/tests/blackbox/cases/20230725_00_syscall

https://github.com/nature-lang/nature/tree/master/tests/blackbox/cases/20230727_01_syscall

https://github.com/nature-lang/nature/blob/master/tests/blackbox/cases/20230728_01_stat.n

https://github.com/nature-lang/nature/blob/master/tests/blackbox/cases/20230728_02_syscall.n

https://github.com/nature-lang/nature/blob/master/tests/blackbox/cases/20230729_00_syscall.n

https://github.com/nature-lang/nature/blob/master/tests/blackbox/cases/20230729_01_syscall.n

https://github.com/nature-lang/nature/blob/master/tests/blackbox/cases/20230730_00_net.n

stat_t​

type stat_t = struct {
    u64 dev
    u64 ino
    u64 nlink
    u32 mode
    u32 uid
    u32 gid
    u32 __pad0
    u64 rdev
    i64 size
    i64 blksize
    i64 blocks
    timespec_t atim
    timespec_t mtim
    timespec_t ctim
    arr<i64,3> __unused
}

timespec_t​

type timespec_t = struct {
    i64 sec
    i64 nsec
}

sockaddr_in​

type sockaddr_in = struct {
    u16 sin_family
    u16 sin_port
    u32 sin_addr
    arr<u8,8> sin_zero
}

sockaddr_in6​

type sockaddr_in6 = struct {
    u8 sin6_len
    u8 sin6_family
    u16 sin6_port
    u32 sin6_flowinfo
    // ipv6 address(128-bit)
    arr<u32,4> sin6_addr
    u32 sin6_scope_id
}

sockaddr_un​

type sockaddr_un = struct {
    u8 sun_len
    u8 sun_family
    //  char sun_path[108];
    arr<u8,108> sun_path
}

fn call6(int number, cptr a1, cptr a2, cptr a3, cptr a4, cptr a5, cptr a6):int​

fn open(string filename, int flags, u32 perm):int​

fn read(int fd, [u8] buf):int​

fn read(int fd, cptr buf, int len):int​

fn readlink(string file, [u8] buf):int​

fn write(int fd, [u8] buf):int​

fn write(int fd, cptr buf, int len):int​

fn close(int fd)​

fn unlink(string path)​

fn seek(int fd, int offset, int whence):int​

fn fork():int​

fn exec(string path, [string] argv, [string] envp)​

fn stat(string filename):stat_t​

fn fstat(int fd):stat_t​

fn mkdir(string path, u32 mode)​

fn rmdir(string path)​

fn rename(string oldpath, string newpath)​

fn exit(int status)​

fn getpid():int​

fn getppid():int​

fn getcwd():string​

fn kill(int pid, int sig)​

fn wait(int pid, int option):(int, int)​

fn chdir(string path)​

fn chroot(string path)​

fn chown(string path, u32 uid, u32 gid)​

fn chmod(string path, u32 mode)​

fn clock_gettime(int clock_id):timespec_t​

fn socket(int domain, int t, int protocol):int​

fn bind(int sockfd, sockaddr_t addr)​

fn bind(int sockfd, sockaddr_in6 addr)​

fn listen(int sockfd, int backlog)​

fn accept(int sockfd, ptr<sockaddr_t> addr):int​

fn recvfrom(int sockfd, [u8] buf, int flags):int​

fn sendto(int sockfd, [u8] buf, int flags):int​

fn get_envs():[string]​

fn get_env(string key):string​

fn set_env(string key, string value)​

fn unshare(int flags)​

fn mount(string source, string target, string fs_type, u32 flags, string data)​

fn umount(string target, u32 flags)​