Add uname and gethostname

Cargo.lock

@@ -300,6 +300,7 @@ dependencies = [
  "sys_socket 0.1.0",
  "sys_stat 0.1.0",
  "sys_time 0.1.0",
+ "sys_utsname 0.1.0",
  "sys_wait 0.1.0",
  "time 0.1.0",
  "unistd 0.1.0",
@@ -493,6 +494,14 @@ dependencies = [
  "platform 0.1.0",
 ]
 
+[[package]]
+name = "sys_utsname"
+version = "0.1.0"
+dependencies = [
+ "cbindgen 0.5.2",
+ "platform 0.1.0",
+]
+
 [[package]]
 name = "sys_wait"
 version = "0.1.0"
@@ -574,6 +583,7 @@ dependencies = [
  "platform 0.1.0",
  "stdio 0.1.0",
  "string 0.1.0",
+ "sys_utsname 0.1.0",
 ]
 
 [[package]]

Cargo.toml

@@ -35,6 +35,7 @@ sys_resource = { path = "src/sys_resource" }
 sys_socket = { path = "src/sys_socket" }
 sys_stat = { path = "src/sys_stat" }
 sys_time = { path = "src/sys_time" }
+sys_utsname = { path = "src/sys_utsname" }
 sys_wait = { path = "src/sys_wait" }
 time = { path = "src/time" }
 unistd = { path = "src/unistd" }
@@ -43,7 +44,7 @@ wctype = { path = "src/wctype" }
 [dependencies.compiler_builtins]
 git = "https://github.com/rust-lang-nursery/compiler-builtins.git"
 default-features = false
-features = ["no-lang-items"]
+features = ["no-lang-items", "mangled-names"]
 
 [profile.dev]
 panic = "abort"

src/lib.rs

@@ -24,6 +24,7 @@ pub extern crate sys_resource;
 pub extern crate sys_socket;
 pub extern crate sys_stat;
 pub extern crate sys_time;
+pub extern crate sys_utsname;
 pub extern crate sys_wait;
 pub extern crate time;
 pub extern crate unistd;

src/platform/src/lib.rs

@@ -10,7 +10,7 @@ extern crate sc;
 
 #[cfg(all(not(feature = "no_std"), target_os = "redox"))]
 #[macro_use]
-extern crate syscall;
+pub extern crate syscall;
 
 pub use sys::*;
 

src/platform/src/linux/mod.rs

@@ -198,6 +198,10 @@ pub fn stat(file: *const c_char, buf: *mut stat) -> c_int {
     e(unsafe { syscall!(NEWFSTATAT, AT_FDCWD, file, buf, 0) }) as c_int
 }
 
+pub fn uname(utsname: usize) -> c_int {
+    e(unsafe { syscall!(UNAME, utsname, 0) }) as c_int
+}
+
 pub fn unlink(path: *const c_char) -> c_int {
     e(unsafe { syscall!(UNLINKAT, AT_FDCWD, path, 0) }) as c_int
 }

src/sys_utsname/Cargo.toml

@@ -0,0 +1,11 @@
+[package]
+name = "sys_utsname"
+version = "0.1.0"
+authors = ["jD91mZM2 <[email protected]>"]
+build = "build.rs"
+
+[build-dependencies]
+cbindgen = { path = "../../cbindgen" }
+
+[dependencies]
+platform = { path = "../platform" }

src/sys_utsname/build.rs

@@ -0,0 +1,11 @@
+extern crate cbindgen;
+
+use std::{env, fs};
+
+fn main() {
+    let crate_dir = env::var("CARGO_MANIFEST_DIR").expect("CARGO_MANIFEST_DIR not set");
+    fs::create_dir_all("../../target/include").expect("failed to create include directory");
+    cbindgen::generate(crate_dir)
+        .expect("failed to generate bindings")
+        .write_to_file("../../target/include/sys/utsname.h");
+}

src/sys_utsname/cbindgen.toml

@@ -0,0 +1,5 @@
+include_guard = "_SYS_UTSNAME_H"
+language = "C"
+
+[enum]
+prefix_with_name = true

src/sys_utsname/src/lib.rs

@@ -0,0 +1,28 @@
+//! sys/utsname implementation for Redox, following http://pubs.opengroup.org/onlinepubs/7908799/xsh/sysutsname.h.html
+
+#![no_std]
+#![cfg(target_os = "linux")]
+
+extern crate platform;
+
+use core::ptr;
+use platform::types::*;
+
+const LENGTH: usize = 65;
+
+#[allow(non_camel_case)]
+#[no_mangle]
+#[repr(C)]
+pub struct utsname {
+    pub sysname:    [c_char; LENGTH],
+    pub nodename:   [c_char; LENGTH],
+    pub release:    [c_char; LENGTH],
+    pub version:    [c_char; LENGTH],
+    pub machine:    [c_char; LENGTH],
+    pub domainname: [c_char; LENGTH]
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn uname(uts: *mut utsname) -> c_int {
+    platform::uname(uts as usize)
+}

src/unistd/Cargo.toml

@@ -11,3 +11,4 @@ cbindgen = { path = "../../cbindgen" }
 platform = { path = "../platform" }
 stdio = { path = "../stdio" }
 string = { path = "../string" }
+sys_utsname = { path = "../sys_utsname" }

src/unistd/src/lib.rs

@@ -5,6 +5,7 @@
 extern crate platform;
 extern crate stdio;
 extern crate string;
+extern crate sys_utsname;
 
 pub use platform::types::*;
 pub use getopt::*;
@@ -199,6 +200,54 @@ pub extern "C" fn gethostid() -> c_long {
     unimplemented!();
 }
 
+#[no_mangle]
+pub unsafe extern "C" fn gethostname(mut name: *mut c_char, len: size_t) -> c_int {
+    #[cfg(target_os = "linux")] {
+        use core::mem;
+
+        // len only needs to be mutable on linux
+        let mut len = len;
+
+        let mut uts: sys_utsname::utsname = mem::uninitialized();
+        let err = sys_utsname::uname(&mut uts);
+        if err < 0 {
+            mem::forget(uts);
+            return err;
+        }
+        for c in uts.nodename.iter() {
+            if len == 0 { break; }
+            len -= 1;
+
+            *name = *c;
+
+            if *name == 0 {
+                // We do want to copy the zero also, so we check this after the copying.
+                break;
+            }
+
+            name = name.offset(1);
+        }
+        0
+    }
+    #[cfg(target_os = "redox")] {
+        use platform::{FileReader, Read};
+        use platform::syscall::flag::*;
+
+        let fd = platform::open("/etc/hostname\0",as_ptr(), 0, O_RDONLY);
+        if fd < 0 {
+            return fd;
+        }
+        let reader = FileReader(fd);
+        for _ in 0..len {
+            if !reader.read_u8(&mut *name) {
+                *name = 0;
+                break;
+            }
+            name = name.offset(1);
+        }
+    }
+}
+
 #[no_mangle]
 pub extern "C" fn getlogin() -> *mut c_char {
     unimplemented!();

src/wchar/src/lib.rs

@@ -0,0 +1,394 @@
+//! wchar implementation for Redox, following http://pubs.opengroup.org/onlinepubs/7908799/xsh/string.h.html
+
+#![no_std]
+
+extern crate errno;
+extern crate platform;
+extern crate stdlib;
+extern crate string;
+extern crate time;
+
+use platform::types::*;
+use errno::*;
+use time::*;
+use core::cmp;
+use core::usize;
+use core::ptr;
+use core::mem;
+use string::*;
+
+pub type wint_t = i32;
+
+#[repr(C)]
+pub struct mbstate_t {
+    pub mbs_count: c_int,
+    pub mbs_length: c_int,
+    pub mbs_wch: wint_t,
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn btowc(c: c_int) -> wint_t {
+    //Check for EOF
+    if c == -1 {
+        return -1;
+    }
+
+    let uc = c as u8;
+    let c = uc as c_char;
+    let mut ps: mbstate_t = mbstate_t {
+        mbs_count: 0,
+        mbs_length: 0,
+        mbs_wch: 0,
+    };
+    let mut wc: wchar_t = 0;
+    let saved_errno = platform::errno;
+    let status = mbrtowc(&mut wc, &c as (*const c_char), 1, &mut ps);
+    if status == usize::max_value() || status == usize::max_value() - 1 {
+        platform::errno = saved_errno;
+        return platform::errno;
+    }
+    return wc as wint_t;
+}
+
+#[no_mangle]
+pub extern "C" fn getwchar() -> wint_t {
+    unimplemented!();
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn mbsinit(ps: *const mbstate_t) -> c_int {
+    if ps.is_null() || (*ps).mbs_count == 0 {
+        return 1;
+    } else {
+        return 0;
+    }
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn mbrlen(s: *const c_char, n: usize, ps: *mut mbstate_t) -> usize {
+    static mut internal: mbstate_t = mbstate_t {
+        mbs_count: 0,
+        mbs_length: 0,
+        mbs_wch: 0,
+    };
+    return mbrtowc(ptr::null_mut(), s, n, &mut internal);
+}
+
+//Only works for utf8!
+#[no_mangle]
+pub unsafe extern "C" fn mbrtowc(
+    pwc: *mut wchar_t,
+    s: *const c_char,
+    n: usize,
+    ps: *mut mbstate_t,
+) -> usize {
+    static mut internal: mbstate_t = mbstate_t {
+        mbs_count: 0,
+        mbs_length: 0,
+        mbs_wch: 0,
+    };
+
+    if ps.is_null() {
+        let ps = &mut internal;
+    }
+    if s.is_null() {
+        let xs: [c_char; 1] = [0];
+        utf8_mbrtowc(pwc, &xs[0] as *const c_char, 1, ps);
+    }
+
+    return utf8_mbrtowc(pwc, s, n, ps);
+}
+
+#[no_mangle]
+unsafe extern "C" fn utf8_mbrtowc(
+    pwc: *mut wchar_t,
+    s: *const c_char,
+    n: usize,
+    ps: *mut mbstate_t,
+) -> usize {
+    let mut i: usize = 0;
+
+    while !(i > 0 && (*ps).mbs_count == 0) {
+        if (n <= i) {
+            return -2isize as usize;
+        }
+        let c = s.offset(i as isize);
+        let uc = c as u8;
+
+        if (*ps).mbs_count == 0 {
+            //1 byte sequence - 00–7F
+            if (uc & 0b10000000) == 0b00000000 {
+                (*ps).mbs_count = 0;
+                (*ps).mbs_length = 1;
+                (*ps).mbs_wch = (uc as wchar_t & 0b1111111) as wint_t;
+            }
+            //2 byte sequence - C2–DF
+            else if (uc & 0b11100000) == 0b11000000 {
+                (*ps).mbs_count = 1;
+                (*ps).mbs_length = 2;
+                (*ps).mbs_wch = (uc as wchar_t & 0b11111) as wint_t;
+            }
+            //3 byte sequence - E0–EF
+            else if (uc & 0b11110000) == 0b11100000 {
+                (*ps).mbs_count = 2;
+                (*ps).mbs_length = 3;
+                (*ps).mbs_wch = (uc as wchar_t & 0b1111) as wint_t;
+            }
+            //4 byte sequence - F0–F4
+            else if (uc & 0b11111000) == 0b11110000 {
+                (*ps).mbs_count = 3;
+                (*ps).mbs_length = 4;
+                (*ps).mbs_wch = (uc as wchar_t & 0b111) as wint_t;
+            } else {
+                platform::errno = errno::EILSEQ;
+                return -1isize as usize;
+            }
+        } else {
+            if (uc & 0b11000000) != 0b10000000 {
+                platform::errno = errno::EILSEQ;
+                return -1isize as usize;
+            }
+
+            (*ps).mbs_wch = (*ps).mbs_wch << 6 | (uc & 0b00111111) as wint_t;
+            (*ps).mbs_count -= 1;
+        }
+
+        i += 1;
+    }
+
+    // Reject the character if it was produced with an overly long sequence.
+    if (*ps).mbs_length == 1 && 1 << 7 <= (*ps).mbs_wch {
+        platform::errno = errno::EILSEQ;
+        return -1isize as usize;
+    }
+    if (*ps).mbs_length == 2 && 1 << (5 + 1 * 6) <= (*ps).mbs_wch {
+        platform::errno = errno::EILSEQ;
+        return -1isize as usize;
+    }
+    if (*ps).mbs_length == 3 && 1 << (5 + 2 * 6) <= (*ps).mbs_wch {
+        platform::errno = errno::EILSEQ;
+        return -1isize as usize;
+    }
+    if (*ps).mbs_length == 4 && 1 << (5 + 3 * 6) <= (*ps).mbs_wch {
+        platform::errno = errno::EILSEQ;
+        return -1isize as usize;
+    }
+
+    // The definition of UTF-8 prohibits encoding character numbers between
+    // U+D800 and U+DFFF, which are reserved for use with the UTF-16 encoding
+    // form (as surrogate pairs) and do not directly represent characters.
+    if 0xD800 <= (*ps).mbs_wch && (*ps).mbs_wch <= 0xDFFF {
+        platform::errno = errno::EILSEQ;
+        return -1isize as usize;
+    }
+    // RFC 3629 limits UTF-8 to 0x0 through 0x10FFFF.
+    if 0x10FFFF <= (*ps).mbs_wch {
+        platform::errno = errno::EILSEQ;
+        return -1isize as usize;
+    }
+
+    let result: wchar_t = (*ps).mbs_wch as wchar_t;
+
+    if !pwc.is_null() {
+        *pwc = result;
+    }
+
+    (*ps).mbs_length = 0;
+    (*ps).mbs_wch = 0;
+
+    return if result != 0 { i } else { 0 };
+}
+
+#[no_mangle]
+pub extern "C" fn mbsrtowcs(
+    dst: *mut wchar_t,
+    src: *mut *const c_char,
+    len: usize,
+    ps: *mut mbstate_t,
+) -> usize {
+    unimplemented!();
+}
+
+#[no_mangle]
+pub extern "C" fn putwchar(wc: wchar_t) -> wint_t {
+    unimplemented!();
+}
+
+#[no_mangle]
+pub extern "C" fn towlower(wc: wint_t) -> wint_t {
+    unimplemented!();
+}
+
+#[no_mangle]
+pub extern "C" fn towupper(wc: wint_t) -> wint_t {
+    unimplemented!();
+}
+
+#[no_mangle]
+pub extern "C" fn wcrtomb(s: *mut c_char, wc: wchar_t, ps: *mut mbstate_t) -> usize {
+    unimplemented!();
+}
+
+#[no_mangle]
+pub extern "C" fn wcscat(ws1: *mut wchar_t, ws2: *const wchar_t) -> *mut wchar_t {
+    unimplemented!();
+}
+
+#[no_mangle]
+pub extern "C" fn wcschr(ws1: *const wchar_t, ws2: wchar_t) -> *mut c_int {
+    unimplemented!();
+}
+
+#[no_mangle]
+pub extern "C" fn wcscmp(ws1: *const wchar_t, ws2: *const wchar_t) -> c_int {
+    unimplemented!();
+}
+
+#[no_mangle]
+pub extern "C" fn wcscoll(ws1: *const wchar_t, ws2: *const wchar_t) -> c_int {
+    unimplemented!();
+}
+
+#[no_mangle]
+pub extern "C" fn wcscpy(ws1: *mut wchar_t, ws2: *const wchar_t) -> *mut wchar_t {
+    unimplemented!();
+}
+
+#[no_mangle]
+pub extern "C" fn wcscspn(ws1: *const wchar_t, ws2: *const wchar_t) -> usize {
+    unimplemented!();
+}
+
+#[no_mangle]
+pub extern "C" fn wcsftime(
+    wcs: *mut wchar_t,
+    maxsize: usize,
+    format: *const wchar_t,
+    timptr: *mut tm,
+) -> usize {
+    unimplemented!();
+}
+
+#[no_mangle]
+pub extern "C" fn wcslen(ws: *const wchar_t) -> c_ulong {
+    unimplemented!();
+}
+
+#[no_mangle]
+pub extern "C" fn wcsncat(ws1: *mut wchar_t, ws2: *const wchar_t, n: usize) -> *mut wchar_t {
+    unimplemented!();
+}
+
+#[no_mangle]
+pub extern "C" fn wcsncmp(ws1: *const wchar_t, ws2: *const wchar_t, n: usize) -> c_int {
+    unimplemented!();
+}
+
+#[no_mangle]
+pub extern "C" fn wcsncpy(ws1: *mut wchar_t, ws2: *const wchar_t, n: usize) -> *mut wchar_t {
+    unimplemented!();
+}
+
+#[no_mangle]
+pub extern "C" fn wcspbrk(ws1: *const wchar_t, ws2: *const wchar_t) -> *mut wchar_t {
+    unimplemented!();
+}
+
+#[no_mangle]
+pub extern "C" fn wcsrchr(ws1: *const wchar_t, ws2: wchar_t) -> *mut wchar_t {
+    unimplemented!();
+}
+
+#[no_mangle]
+pub extern "C" fn wcsrtombs(
+    dst: *mut c_char,
+    src: *mut *const wchar_t,
+    len: usize,
+    ps: *mut mbstate_t,
+) -> usize {
+    unimplemented!();
+}
+
+#[no_mangle]
+pub extern "C" fn wcsspn(ws1: *const wchar_t, ws2: *const wchar_t) -> usize {
+    unimplemented!();
+}
+
+#[no_mangle]
+pub extern "C" fn wcsstr(ws1: *const wchar_t, ws2: *const wchar_t) -> *mut wchar_t {
+    unimplemented!();
+}
+
+#[no_mangle]
+pub extern "C" fn wcstod(nptr: *const wchar_t, endptr: *mut *mut wchar_t) -> f64 {
+    unimplemented!();
+}
+
+#[no_mangle]
+pub extern "C" fn wcstok(
+    ws1: *mut wchar_t,
+    ws2: *const wchar_t,
+    ptr: *mut *mut wchar_t,
+) -> *mut wchar_t {
+    unimplemented!();
+}
+
+#[no_mangle]
+pub extern "C" fn wcstol(nptr: *const wchar_t, endptr: *mut *mut wchar_t, base: c_int) -> c_long {
+    unimplemented!();
+}
+
+#[no_mangle]
+pub extern "C" fn wcstoul(nptr: *const wchar_t, endptr: *mut *mut wchar_t, base: c_int) -> c_ulong {
+    unimplemented!();
+}
+
+#[no_mangle]
+pub extern "C" fn wcswcs(ws1: *const wchar_t, ws2: *const wchar_t) -> *mut wchar_t {
+    unimplemented!();
+}
+
+#[no_mangle]
+pub extern "C" fn wcswidth(pwcs: *const wchar_t, n: usize) -> c_int {
+    unimplemented!();
+}
+
+#[no_mangle]
+pub extern "C" fn wcsxfrm(ws1: *mut wchar_t, ws2: *const wchar_t, n: usize) -> usize {
+    unimplemented!();
+}
+
+#[no_mangle]
+pub extern "C" fn wctob(c: wint_t) -> c_int {
+    unimplemented!();
+}
+
+#[no_mangle]
+pub extern "C" fn wcwidth(wc: wchar_t) -> c_int {
+    unimplemented!();
+}
+
+#[no_mangle]
+pub extern "C" fn wmemchr(ws: *const wchar_t, wc: wchar_t, n: usize) -> *mut c_int {
+    unimplemented!();
+}
+
+#[no_mangle]
+pub extern "C" fn wmemcmp(ws1: *const wchar_t, ws2: *const wchar_t, n: usize) -> c_int {
+    unimplemented!();
+}
+
+#[no_mangle]
+pub extern "C" fn wmemcpy(ws1: *mut wchar_t, ws2: *const wchar_t, n: usize) -> *mut wchar_t {
+    unimplemented!();
+}
+
+#[no_mangle]
+pub extern "C" fn wmemmove(ws1: *mut wchar_t, ws2: *const wchar_t, n: usize) -> *mut wchar_t {
+    unimplemented!();
+}
+
+#[no_mangle]
+pub extern "C" fn wmemset(ws1: *mut wchar_t, ws2: wchar_t, n: usize) -> *mut wchar_t {
+    unimplemented!();
+}

tests/.gitignore

@@ -15,8 +15,9 @@
 /fcntl
 /fsync
 /ftruncate
-/getid
 /getc_unget
+/gethostname
+/getid
 /link
 /locale
 /math

tests/Makefile

@@ -57,6 +57,7 @@ BINS=\
 	$(EXPECT_BINS) \
 	alloc \
 	chdir \
+	gethostname \
 	getid \
 	setid
 

tests/gethostname.c

@@ -0,0 +1,12 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+
+int main() {
+    char* hostname = malloc(256);
+    if (gethostname(hostname, 256) == 0) {
+        printf("Hostname: %s\n", hostname);
+    } else {
+        puts("error getting hostname");
+    }
+}