redox: convert to target_family unix

13 files changed, 92 insertions, 32 deletions

diff --git a/src/libstd/sys/unix/args.rs b/src/libstd/sys/unix/args.rs
index 3b4de56f2c9..288e9b5c126 100644
--- a/src/libstd/sys/unix/args.rs
+++ b/src/libstd/sys/unix/args.rs
@@ -56,7 +56,8 @@ impl DoubleEndedIterator for Args {
           target_os = "haiku",
           target_os = "l4re",
           target_os = "fuchsia",
-          target_os = "hermit"))]
+          target_os = "hermit",
+          target_os = "redox"))]
 mod imp {
     use crate::os::unix::prelude::*;
     use crate::ptr;
diff --git a/src/libstd/sys/unix/condvar.rs b/src/libstd/sys/unix/condvar.rs
index 4201de794b7..0a93fbf8ea7 100644
--- a/src/libstd/sys/unix/condvar.rs
+++ b/src/libstd/sys/unix/condvar.rs
@@ -31,14 +31,16 @@ impl Condvar {
               target_os = "ios",
               target_os = "l4re",
               target_os = "android",
-              target_os = "hermit"))]
+              target_os = "hermit",
+              target_os = "redox"))]
     pub unsafe fn init(&mut self) {}
 
     #[cfg(not(any(target_os = "macos",
                   target_os = "ios",
                   target_os = "l4re",
                   target_os = "android",
-                  target_os = "hermit")))]
+                  target_os = "hermit",
+                  target_os = "redox")))]
     pub unsafe fn init(&mut self) {
         use crate::mem::MaybeUninit;
         let mut attr = MaybeUninit::<libc::pthread_condattr_t>::uninit();
diff --git a/src/libstd/sys/unix/env.rs b/src/libstd/sys/unix/env.rs
index 891013406a1..d724eeb8b3f 100644
--- a/src/libstd/sys/unix/env.rs
+++ b/src/libstd/sys/unix/env.rs
@@ -162,3 +162,14 @@ pub mod os {
     pub const EXE_SUFFIX: &str = "";
     pub const EXE_EXTENSION: &str = "";
 }
+
+#[cfg(target_os = "redox")]
+pub mod os {
+    pub const FAMILY: &str = "unix";
+    pub const OS: &str = "redox";
+    pub const DLL_PREFIX: &str = "lib";
+    pub const DLL_SUFFIX: &str = ".so";
+    pub const DLL_EXTENSION: &str = "so";
+    pub const EXE_SUFFIX: &str = "";
+    pub const EXE_EXTENSION: &str = "";
+}
diff --git a/src/libstd/sys/unix/fast_thread_local.rs b/src/libstd/sys/unix/fast_thread_local.rs
index c34c2e6e786..952ba40ee87 100644
--- a/src/libstd/sys/unix/fast_thread_local.rs
+++ b/src/libstd/sys/unix/fast_thread_local.rs
@@ -10,7 +10,7 @@
 // fallback implementation to use as well.
 //
 // Due to rust-lang/rust#18804, make sure this is not generic!
-#[cfg(any(target_os = "linux", target_os = "fuchsia", target_os = "hermit"))]
+#[cfg(any(target_os = "linux", target_os = "fuchsia", target_os = "hermit", target_os = "redox"))]
 pub unsafe fn register_dtor(t: *mut u8, dtor: unsafe extern fn(*mut u8)) {
     use crate::mem;
     use crate::sys_common::thread_local::register_dtor_fallback;
diff --git a/src/libstd/sys/unix/fd.rs b/src/libstd/sys/unix/fd.rs
index 0cecdd7ffa0..ac43526b50f 100644
--- a/src/libstd/sys/unix/fd.rs
+++ b/src/libstd/sys/unix/fd.rs
@@ -176,7 +176,8 @@ impl FileDesc {
                   target_os = "fuchsia",
                   target_os = "l4re",
                   target_os = "linux",
-                  target_os = "haiku")))]
+                  target_os = "haiku",
+                  target_os = "redox")))]
     pub fn set_cloexec(&self) -> io::Result<()> {
         unsafe {
             cvt(libc::ioctl(self.fd, libc::FIOCLEX))?;
@@ -189,7 +190,8 @@ impl FileDesc {
               target_os = "fuchsia",
               target_os = "l4re",
               target_os = "linux",
-              target_os = "haiku"))]
+              target_os = "haiku",
+              target_os = "redox"))]
     pub fn set_cloexec(&self) -> io::Result<()> {
         unsafe {
             let previous = cvt(libc::fcntl(self.fd, libc::F_GETFD))?;
diff --git a/src/libstd/sys/unix/fs.rs b/src/libstd/sys/unix/fs.rs
index cc1f0790d43..822feacea62 100644
--- a/src/libstd/sys/unix/fs.rs
+++ b/src/libstd/sys/unix/fs.rs
@@ -33,7 +33,8 @@ use libc::{stat as stat64, fstat as fstat64, lstat as lstat64, off_t as off64_t,
               target_os = "emscripten",
               target_os = "solaris",
               target_os = "l4re",
-              target_os = "fuchsia")))]
+              target_os = "fuchsia",
+              target_os = "redox")))]
 use libc::{readdir_r as readdir64_r};
 
 pub use crate::sys_common::fs::remove_dir_all;
@@ -69,7 +70,7 @@ pub struct DirEntry {
     // on Solaris and Fuchsia because a) it uses a zero-length
     // array to store the name, b) its lifetime between readdir
     // calls is not guaranteed.
-    #[cfg(any(target_os = "solaris", target_os = "fuchsia"))]
+    #[cfg(any(target_os = "solaris", target_os = "fuchsia", target_os = "redox"))]
     name: Box<[u8]>
 }
 
@@ -216,7 +217,7 @@ impl fmt::Debug for ReadDir {
 impl Iterator for ReadDir {
     type Item = io::Result<DirEntry>;
 
-    #[cfg(any(target_os = "solaris", target_os = "fuchsia"))]
+    #[cfg(any(target_os = "solaris", target_os = "fuchsia", target_os = "redox"))]
     fn next(&mut self) -> Option<io::Result<DirEntry>> {
         use crate::slice;
 
@@ -253,7 +254,7 @@ impl Iterator for ReadDir {
         }
     }
 
-    #[cfg(not(any(target_os = "solaris", target_os = "fuchsia")))]
+    #[cfg(not(any(target_os = "solaris", target_os = "fuchsia", target_os = "redox")))]
     fn next(&mut self) -> Option<io::Result<DirEntry>> {
         if self.end_of_stream {
             return None;
@@ -346,7 +347,8 @@ impl DirEntry {
               target_os = "haiku",
               target_os = "l4re",
               target_os = "fuchsia",
-              target_os = "hermit"))]
+              target_os = "hermit",
+              target_os = "redox"))]
     pub fn ino(&self) -> u64 {
         self.entry.d_ino as u64
     }
@@ -384,7 +386,8 @@ impl DirEntry {
         }
     }
     #[cfg(any(target_os = "solaris",
-              target_os = "fuchsia"))]
+              target_os = "fuchsia",
+              target_os = "redox"))]
     fn name_bytes(&self) -> &[u8] {
         &*self.name
     }
diff --git a/src/libstd/sys/unix/mod.rs b/src/libstd/sys/unix/mod.rs
index 821623db272..b1f7aac8b4b 100644
--- a/src/libstd/sys/unix/mod.rs
+++ b/src/libstd/sys/unix/mod.rs
@@ -17,6 +17,7 @@ use crate::io::ErrorKind;
 #[cfg(all(not(rustdoc), target_os = "fuchsia"))]   pub use crate::os::fuchsia as platform;
 #[cfg(all(not(rustdoc), target_os = "l4re"))]      pub use crate::os::linux as platform;
 #[cfg(all(not(rustdoc), target_os = "hermit"))]    pub use crate::os::hermit as platform;
+#[cfg(all(not(rustdoc), target_os = "redox"))]      pub use crate::os::redox as platform;
 
 pub use self::rand::hashmap_random_keys;
 pub use libc::strlen;
diff --git a/src/libstd/sys/unix/os.rs b/src/libstd/sys/unix/os.rs
index dad19eabf7d..bc8562a0a7b 100644
--- a/src/libstd/sys/unix/os.rs
+++ b/src/libstd/sys/unix/os.rs
@@ -25,6 +25,13 @@ use libc::{c_int, c_char, c_void};
 
 const TMPBUF_SZ: usize = 128;
 
+cfg_if! {
+    if #[cfg(target_os = "redox")] {
+        const PATH_SEPARATOR: u8 = b';';
+    } else {
+        const PATH_SEPARATOR: u8 = b':';
+    }
+}
 
 extern {
     #[cfg(not(target_os = "dragonfly"))]
@@ -37,6 +44,7 @@ extern {
                    target_os = "openbsd",
                    target_os = "android",
                    target_os = "hermit",
+                   target_os = "redox",
                    target_env = "newlib"),
                link_name = "__errno")]
     #[cfg_attr(target_os = "solaris", link_name = "___errno")]
@@ -155,10 +163,10 @@ pub fn split_paths(unparsed: &OsStr) -> SplitPaths<'_> {
     fn bytes_to_path(b: &[u8]) -> PathBuf {
         PathBuf::from(<OsStr as OsStrExt>::from_bytes(b))
     }
-    fn is_colon(b: &u8) -> bool { *b == b':' }
+    fn is_separator(b: &u8) -> bool { *b == PATH_SEPARATOR }
     let unparsed = unparsed.as_bytes();
     SplitPaths {
-        iter: unparsed.split(is_colon as fn(&u8) -> bool)
+        iter: unparsed.split(is_separator as fn(&u8) -> bool)
                       .map(bytes_to_path as fn(&[u8]) -> PathBuf)
     }
 }
@@ -176,12 +184,11 @@ pub fn join_paths<I, T>(paths: I) -> Result<OsString, JoinPathsError>
     where I: Iterator<Item=T>, T: AsRef<OsStr>
 {
     let mut joined = Vec::new();
-    let sep = b':';
 
     for (i, path) in paths.enumerate() {
         let path = path.as_ref().as_bytes();
-        if i > 0 { joined.push(sep) }
-        if path.contains(&sep) {
+        if i > 0 { joined.push(PATH_SEPARATOR) }
+        if path.contains(&PATH_SEPARATOR) {
             return Err(JoinPathsError)
         }
         joined.extend_from_slice(path);
@@ -191,7 +198,7 @@ pub fn join_paths<I, T>(paths: I) -> Result<OsString, JoinPathsError>
 
 impl fmt::Display for JoinPathsError {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        "path segment contains separator `:`".fmt(f)
+        write!(f, "path segment contains separator `{}`", PATH_SEPARATOR)
     }
 }
 
@@ -382,6 +389,11 @@ pub fn current_exe() -> io::Result<PathBuf> {
     }
 }
 
+#[cfg(target_os = "redox")]
+pub fn current_exe() -> io::Result<PathBuf> {
+    crate::fs::read_to_string("sys:exe").map(PathBuf::from)
+}
+
 #[cfg(any(target_os = "fuchsia", target_os = "l4re", target_os = "hermit"))]
 pub fn current_exe() -> io::Result<PathBuf> {
     use crate::io::ErrorKind;
@@ -511,11 +523,13 @@ pub fn home_dir() -> Option<PathBuf> {
 
     #[cfg(any(target_os = "android",
               target_os = "ios",
-              target_os = "emscripten"))]
+              target_os = "emscripten",
+              target_os = "redox"))]
     unsafe fn fallback() -> Option<OsString> { None }
     #[cfg(not(any(target_os = "android",
                   target_os = "ios",
-                  target_os = "emscripten")))]
+                  target_os = "emscripten",
+                  target_os = "redox")))]
     unsafe fn fallback() -> Option<OsString> {
         let amt = match libc::sysconf(libc::_SC_GETPW_R_SIZE_MAX) {
             n if n < 0 => 512 as usize,
diff --git a/src/libstd/sys/unix/pipe.rs b/src/libstd/sys/unix/pipe.rs
index d36e94df63f..029f4216b7e 100644
--- a/src/libstd/sys/unix/pipe.rs
+++ b/src/libstd/sys/unix/pipe.rs
@@ -26,7 +26,8 @@ pub fn anon_pipe() -> io::Result<(AnonPipe, AnonPipe)> {
                 target_os = "freebsd",
                 target_os = "linux",
                 target_os = "netbsd",
-                target_os = "openbsd")) &&
+                target_os = "openbsd",
+                target_os = "redox")) &&
        !INVALID.load(Ordering::SeqCst)
     {
 
diff --git a/src/libstd/sys/unix/process/process_common.rs b/src/libstd/sys/unix/process/process_common.rs
index 3ff4f194cd1..9f81c67b477 100644
--- a/src/libstd/sys/unix/process/process_common.rs
+++ b/src/libstd/sys/unix/process/process_common.rs
@@ -12,6 +12,14 @@ use crate::collections::BTreeMap;
 
 use libc::{c_int, gid_t, uid_t, c_char, EXIT_SUCCESS, EXIT_FAILURE};
 
+cfg_if! {
+    if #[cfg(target_os = "redox")] {
+        const DEV_NULL: &'static str = "null:\0";
+    } else {
+        const DEV_NULL: &'static str = "/dev/null\0";
+    }
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // Command
 ////////////////////////////////////////////////////////////////////////////////
@@ -298,7 +306,7 @@ impl Stdio {
                 opts.read(readable);
                 opts.write(!readable);
                 let path = unsafe {
-                    CStr::from_ptr("/dev/null\0".as_ptr() as *const _)
+                    CStr::from_ptr(DEV_NULL.as_ptr() as *const _)
                 };
                 let fd = File::open_c(&path, &opts)?;
                 Ok((ChildStdio::Owned(fd.into_fd()), None))
diff --git a/src/libstd/sys/unix/process/process_unix.rs b/src/libstd/sys/unix/process/process_unix.rs
index fc1e33137c8..327d82e60cf 100644
--- a/src/libstd/sys/unix/process/process_unix.rs
+++ b/src/libstd/sys/unix/process/process_unix.rs
@@ -183,14 +183,17 @@ impl Command {
                 cvt(libc::setgid(u as gid_t))?;
             }
             if let Some(u) = self.get_uid() {
-                // When dropping privileges from root, the `setgroups` call
-                // will remove any extraneous groups. If we don't call this,
-                // then even though our uid has dropped, we may still have
-                // groups that enable us to do super-user things. This will
-                // fail if we aren't root, so don't bother checking the
-                // return value, this is just done as an optimistic
-                // privilege dropping function.
-                let _ = libc::setgroups(0, ptr::null());
+                //FIXME: Redox kernel does not support setgroups yet
+                if cfg!(not(target_os = "redox")) {
+                    // When dropping privileges from root, the `setgroups` call
+                    // will remove any extraneous groups. If we don't call this,
+                    // then even though our uid has dropped, we may still have
+                    // groups that enable us to do super-user things. This will
+                    // fail if we aren't root, so don't bother checking the
+                    // return value, this is just done as an optimistic
+                    // privilege dropping function.
+                    let _ = libc::setgroups(0, ptr::null());
+                }
 
                 cvt(libc::setuid(u as uid_t))?;
             }
diff --git a/src/libstd/sys/unix/rand.rs b/src/libstd/sys/unix/rand.rs
index 71c62461ee9..c5be1763302 100644
--- a/src/libstd/sys/unix/rand.rs
+++ b/src/libstd/sys/unix/rand.rs
@@ -15,7 +15,8 @@ pub fn hashmap_random_keys() -> (u64, u64) {
           not(target_os = "ios"),
           not(target_os = "openbsd"),
           not(target_os = "freebsd"),
-          not(target_os = "fuchsia")))]
+          not(target_os = "fuchsia"),
+          not(target_os = "redox")))]
 mod imp {
     use crate::fs::File;
     use crate::io::Read;
@@ -174,3 +175,15 @@ mod imp {
         unsafe { zx_cprng_draw(v.as_mut_ptr(), v.len()) }
     }
 }
+
+#[cfg(target_os = "redox")]
+mod imp {
+    use crate::fs::File;
+    use crate::io::Read;
+
+    pub fn fill_bytes(v: &mut [u8]) {
+        // Open rand:, read from it, and close it again.
+        let mut file = File::open("rand:").expect("failed to open rand:");
+        file.read_exact(v).expect("failed to read rand:")
+    }
+}
diff --git a/src/libstd/sys/unix/thread.rs b/src/libstd/sys/unix/thread.rs
index 122fc11ec27..988881e3596 100644
--- a/src/libstd/sys/unix/thread.rs
+++ b/src/libstd/sys/unix/thread.rs
@@ -140,7 +140,8 @@ impl Thread {
               target_os = "haiku",
               target_os = "l4re",
               target_os = "emscripten",
-              target_os = "hermit"))]
+              target_os = "hermit",
+              target_os = "redox"))]
     pub fn set_name(_name: &CStr) {
         // Newlib, Illumos, Haiku, and Emscripten have no way to set a thread name.
     }