Auto merge of #1342 - sunfishcode:master, r=alexcrichton

Update to the latest wasi-sysroot.

 - Rename `wasm32-unknown-wasi` to `wasm32-wasi`.
 - `__wasilibc_rmfileat` was renamed to `__wasilibc_unlinkat`
 - Add bindings for a few more functions and typedefs.

ci/docker/wasm32-unknown-wasi/Dockerfile → ci/docker/wasm32-wasi/Dockerfile

@@ -28,13 +28,13 @@ RUN mv /clang+llvm-8.0.0-x86_64-linux-gnu-ubuntu-18.04 /wasmcc
 # those breaking changes on `libc`'s own CI
 RUN git clone https://github.com/CraneStation/wasi-sysroot && \
   cd wasi-sysroot && \
-  git reset --hard 2201343c17b7149a75f543f523bea0c3243c6091
+  git reset --hard eee6ee7566e26f2535eb6088c8494a112ff423b9
 RUN make -C wasi-sysroot install -j $(nproc) WASM_CC=/wasmcc/bin/clang INSTALL_DIR=/wasi-sysroot
 
 # This is a small wrapper script which executes the actual clang binary in
 # `/wasmcc` and then is sure to pass the right `--sysroot` argument which we
 # just built above.
-COPY docker/wasm32-unknown-wasi/clang.sh /wasi-sysroot/bin/clang
+COPY docker/wasm32-wasi/clang.sh /wasi-sysroot/bin/clang
 
 # In the second container we're going to build the `wasmtime` binary which is
 # used to execute wasi executables. This is a standard Rust project so we're
@@ -58,9 +58,9 @@ RUN curl -sSf https://sh.rustup.rs |  sh -s -- -y
 ENV PATH=/root/.cargo/bin:$PATH
 
 RUN apt-get install -y --no-install-recommends python
-RUN git clone https://github.com/CraneStation/wasmtime wasmtime && \
+RUN git clone --recursive https://github.com/CraneStation/wasmtime wasmtime && \
   cd wasmtime && \
-  git reset --hard a1c123c3dd8f9766990efe0f1734a646f61ba8a0
+  git reset --hard 67edb00f29b62864b00179fe4bfa99bc29973285
 RUN cargo build --release --manifest-path wasmtime/Cargo.toml
 
 # And finally in the last image we're going to assemble everything together.
@@ -86,8 +86,8 @@ COPY --from=wasmtime /wasmtime/target/release/wasmtime /usr/bin/
 # executable with the right sysroot, and then we're sure to turn off the
 # crt-static feature to ensure that the CRT that we're specifying with `clang`
 # is used.
-ENV CARGO_TARGET_WASM32_UNKNOWN_WASI_RUNNER=wasmtime \
-  CARGO_TARGET_WASM32_UNKNOWN_WASI_LINKER=/wasi-sysroot/bin/clang \
-  CC_wasm32_unknown_wasi=/wasi-sysroot/bin/clang \
+ENV CARGO_TARGET_WASM32_WASI_RUNNER=wasmtime \
+  CARGO_TARGET_WASM32_WASI_LINKER=/wasi-sysroot/bin/clang \
+  CC_wasm32_wasi=/wasi-sysroot/bin/clang \
   PATH=$PATH:/rust/bin \
   RUSTFLAGS=-Ctarget-feature=-crt-static

ci/docker/wasm32-wasi/clang.sh

@@ -0,0 +1,2 @@
+#!/usr/bin/env sh
+exec /wasmcc/bin/clang --target=wasm32-wasi --sysroot /wasi-sysroot "$@"

libc-test/build.rs

@@ -1883,6 +1883,7 @@ fn test_wasi(target: &str) {
         "locale.h",
         "malloc.h",
         "poll.h",
+        "sched.h",
         "stdbool.h",
         "stddef.h",
         "stdint.h",

src/wasi.rs

@@ -10,8 +10,13 @@ pub type c_long = i32;
 pub type c_ulong = u32;
 pub type c_longlong = i64;
 pub type c_ulonglong = u64;
+pub type intmax_t = i64;
+pub type uintmax_t = u64;
 pub type size_t = usize;
 pub type ssize_t = isize;
+pub type ptrdiff_t = isize;
+pub type intptr_t = isize;
+pub type uintptr_t = usize;
 pub type off_t = i64;
 pub type pid_t = i32;
 pub type int8_t = i8;
@@ -619,11 +624,13 @@ extern {
     pub fn getenv(s: *const c_char) -> *mut c_char;
     pub fn malloc(amt: size_t) -> *mut c_void;
     pub fn malloc_usable_size(ptr: *mut c_void) -> size_t;
+    pub fn sbrk(increment: ::intptr_t) -> *mut ::c_void;
     pub fn rand() -> c_int;
     pub fn read(fd: c_int, ptr: *mut c_void, size: size_t) -> ssize_t;
     pub fn realloc(ptr: *mut c_void, amt: size_t) -> *mut c_void;
     pub fn setenv(k: *const c_char, v: *const c_char, a: c_int) -> c_int;
     pub fn unsetenv(k: *const c_char) -> c_int;
+    pub fn clearenv() -> ::c_int;
     pub fn write(fd: c_int, ptr: *const c_void, size: size_t) -> ssize_t;
     pub static mut environ: *mut *mut c_char;
     pub fn fopen(a: *const c_char, b: *const c_char) -> *mut FILE;
@@ -724,6 +731,7 @@ extern {
     pub fn fgets(buf: *mut c_char, n: c_int, stream: *mut FILE)
         -> *mut c_char;
     pub fn atoi(s: *const c_char) -> c_int;
+    pub fn atof(s: *const c_char) -> c_double;
     pub fn strtod(s: *const c_char, endp: *mut *mut c_char) -> c_double;
     pub fn strtol(
         s: *const c_char,
@@ -822,6 +830,7 @@ extern {
     pub fn readdir(dirp: *mut ::DIR) -> *mut ::dirent;
     pub fn closedir(dirp: *mut ::DIR) -> ::c_int;
     pub fn rewinddir(dirp: *mut ::DIR);
+    pub fn dirfd(dirp: *mut ::DIR) -> ::c_int;
 
     pub fn openat(
         dirfd: ::c_int,
@@ -902,9 +911,11 @@ extern {
     pub fn lstat(path: *const c_char, buf: *mut stat) -> ::c_int;
 
     pub fn fsync(fd: ::c_int) -> ::c_int;
+    pub fn fdatasync(fd: ::c_int) -> ::c_int;
 
     pub fn symlink(path1: *const c_char, path2: *const c_char) -> ::c_int;
 
+    pub fn truncate(path: *const c_char, length: off_t) -> ::c_int;
     pub fn ftruncate(fd: ::c_int, length: off_t) -> ::c_int;
 
     pub fn getrusage(resource: ::c_int, usage: *mut rusage) -> ::c_int;
@@ -954,6 +965,11 @@ extern {
         whence: ::c_int,
     ) -> ::c_int;
     pub fn ftello(stream: *mut ::FILE) -> ::off_t;
+    pub fn posix_fallocate(
+        fd: ::c_int,
+        offset: ::off_t,
+        len: ::off_t,
+    ) -> ::c_int;
 
     pub fn strcasestr(cs: *const c_char, ct: *const c_char) -> *mut c_char;
     pub fn getline(
@@ -1019,13 +1035,14 @@ extern {
         base: ::locale_t,
     ) -> ::locale_t;
     pub fn uselocale(loc: ::locale_t) -> ::locale_t;
+    pub fn sched_yield() -> ::c_int;
 
     pub fn __wasilibc_register_preopened_fd(
         fd: c_int,
         path: *const c_char,
     ) -> c_int;
     pub fn __wasilibc_fd_renumber(fd: c_int, newfd: c_int) -> c_int;
-    pub fn __wasilibc_rmfileat(fd: c_int, path: *const c_char) -> c_int;
+    pub fn __wasilibc_unlinkat(fd: c_int, path: *const c_char) -> c_int;
     pub fn __wasilibc_rmdirat(fd: c_int, path: *const c_char) -> c_int;
     pub fn __wasilibc_init_preopen();
     pub fn __wasilibc_find_relpath(
@@ -1034,6 +1051,7 @@ extern {
         rights_inheriting: __wasi_rights_t,
         relative_path: *mut *const c_char,
     ) -> c_int;
+    pub fn __wasilibc_tell(fd: c_int) -> ::off_t;
 
     pub fn arc4random() -> u32;
     pub fn arc4random_buf(a: *mut c_void, b: size_t);