154 lines
4.3 KiB
Rust
154 lines
4.3 KiB
Rust
/*
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Module: os
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TODO: Restructure and document
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*/
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import core::option;
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import core::ctypes::*;
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export libc;
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export libc_constants;
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export pipe;
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export fd_FILE;
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export close;
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export fclose;
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export waitpid;
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export getcwd;
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export exec_suffix;
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export target_os;
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export dylib_filename;
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export get_exe_path;
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export fsync_fd;
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// FIXME Somehow merge stuff duplicated here and macosx_os.rs. Made difficult
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// by https://github.com/graydon/rust/issues#issue/268
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#[nolink]
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#[abi = "cdecl"]
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native mod libc {
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fn read(fd: fd_t, buf: *u8, count: size_t) -> ssize_t;
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fn write(fd: fd_t, buf: *u8, count: size_t) -> ssize_t;
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fn fread(buf: *u8, size: size_t, n: size_t, f: libc::FILE) -> size_t;
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fn fwrite(buf: *u8, size: size_t, n: size_t, f: libc::FILE) -> size_t;
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fn open(s: str::sbuf, flags: c_int, mode: unsigned) -> fd_t;
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fn close(fd: fd_t) -> c_int;
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type FILE;
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fn fopen(path: str::sbuf, mode: str::sbuf) -> FILE;
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fn fdopen(fd: fd_t, mode: str::sbuf) -> FILE;
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fn fclose(f: FILE);
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fn fflush(f: FILE) -> c_int;
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fn fsync(fd: fd_t) -> c_int;
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fn fileno(f: FILE) -> fd_t;
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fn fgetc(f: FILE) -> c_int;
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fn ungetc(c: c_int, f: FILE);
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fn feof(f: FILE) -> c_int;
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fn fseek(f: FILE, offset: long, whence: c_int) -> c_int;
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fn ftell(f: FILE) -> long;
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type dir;
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fn opendir(d: str::sbuf) -> dir;
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fn closedir(d: dir) -> c_int;
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type dirent;
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fn readdir(d: dir) -> dirent;
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fn getenv(n: str::sbuf) -> str::sbuf;
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fn setenv(n: str::sbuf, v: str::sbuf, overwrite: c_int) -> c_int;
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fn unsetenv(n: str::sbuf) -> c_int;
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fn pipe(buf: *mutable fd_t) -> c_int;
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fn waitpid(pid: pid_t, &status: c_int, options: c_int) -> pid_t;
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fn readlink(path: str::sbuf, buf: str::sbuf, bufsize: size_t) -> ssize_t;
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fn mkdir(path: str::sbuf, mode: c_int) -> c_int;
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fn rmdir(path: str::sbuf) -> c_int;
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fn chdir(path: str::sbuf) -> c_int;
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fn sysctl(name: *c_int, namelen: c_uint,
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oldp: *u8, &oldlenp: size_t,
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newp: *u8, newlen: size_t) -> c_int;
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}
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mod libc_constants {
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const O_RDONLY: c_int = 0i32;
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const O_WRONLY: c_int = 1i32;
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const O_RDWR: c_int = 2i32;
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const O_APPEND: c_int = 8i32;
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const O_CREAT: c_int = 512i32;
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const O_EXCL: c_int = 2048i32;
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const O_TRUNC: c_int = 1024i32;
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const O_TEXT: c_int = 0i32; // nonexistent in FreeBSD libc
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const O_BINARY: c_int = 0i32; // nonexistent in FreeBSD libc
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const S_IRUSR: unsigned = 256u32;
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const S_IWUSR: unsigned = 128u32;
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const CTL_KERN: c_int = 1i32;
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const KERN_PROC: c_int = 14i32;
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const KERN_PROC_PATHNAME: c_int = 12i32;
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}
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fn pipe() -> {in: fd_t, out: fd_t} {
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let fds = {mutable in: 0i32, mutable out: 0i32};
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assert (os::libc::pipe(ptr::mut_addr_of(fds.in)) == 0i32);
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ret {in: fds.in, out: fds.out};
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}
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fn fd_FILE(fd: fd_t) -> libc::FILE {
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ret str::as_buf("r", {|modebuf| libc::fdopen(fd, modebuf) });
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}
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fn close(fd: fd_t) -> c_int {
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libc::close(fd)
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}
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fn fclose(file: libc::FILE) {
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libc::fclose(file)
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}
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fn fsync_fd(fd: fd_t, _l: io::fsync::level) -> c_int {
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ret libc::fsync(fd);
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}
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fn waitpid(pid: pid_t) -> i32 {
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let status = 0i32;
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assert (os::libc::waitpid(pid, status, 0i32) != -1i32);
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ret status;
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}
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#[abi = "cdecl"]
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native mod rustrt {
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fn rust_getcwd() -> str;
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}
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fn getcwd() -> str { ret rustrt::rust_getcwd(); }
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fn exec_suffix() -> str { ret ""; }
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fn target_os() -> str { ret "freebsd"; }
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fn dylib_filename(base: str) -> str { ret "lib" + base + ".so"; }
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/// Returns the directory containing the running program
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/// followed by a path separator
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fn get_exe_path() -> option::t<fs::path> unsafe {
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let bufsize = 1023u;
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let path = str::unsafe_from_bytes(vec::init_elt(0u8, bufsize));
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let mib = [libc_constants::CTL_KERN,
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libc_constants::KERN_PROC,
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libc_constants::KERN_PROC_PATHNAME, -1i32];
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ret str::as_buf(path, { |path_buf|
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if libc::sysctl(vec::unsafe::to_ptr(mib),
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vec::len(mib) as c_uint,
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path_buf, bufsize,
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ptr::null(), 0u) == 0i32 {
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option::some(fs::dirname(path) + fs::path_sep())
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} else {
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option::none
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}
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});
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}
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// Local Variables:
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// mode: rust;
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// fill-column: 78;
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// indent-tabs-mode: nil
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// c-basic-offset: 4
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// buffer-file-coding-system: utf-8-unix
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// End:
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