Files
wasmtime/wasi-common/wasi-misc-tests/src/bin/close_preopen.rs
Jakub Konka cd1e54487c Merge wasi-common into wasmtime
This commit merges [CraneStation/wasi-common] repo as a subdir of
this repo while preserving **all** of git history. There is an
initiative to pull `wasi-common` into [CraneStation/wasmtime], and
[CraneStation/wasmtime] becoming a monorepo. This came about for
several reasons with a common theme of convenience, namely,
having a monorepo:
1. cleans up the problem of dependencies (as we have seen first
   hand with dependabot enabled, it can cause some grief)
2. completely removes the problem of syncing the closely dependent
   repos (e.g., updating `wasi-common` with say a bugfix generally
   implies creating a "sync" commit for pulling in the changes into
   the "parent" repo, in this case, `wasmtime`)
3. mainly for the two reasons above, makes publishing to crates.io
   easier
4. hopefully streamlines the process of getting the community
   involved in contributing to `wasi-common` as now everything
   is one place

[CraneStation/wasi-common]: https://github.com/CraneStation/wasi-common
[CraneStation/wasmtime]: https://github.com/CraneStation/wasmtime
2019-11-07 15:45:58 +01:00

84 lines
2.4 KiB
Rust

use libc;
use more_asserts::assert_gt;
use std::{env, mem, process};
use wasi::wasi_unstable;
use wasi_misc_tests::open_scratch_directory;
use wasi_misc_tests::wasi_wrappers::wasi_fd_fdstat_get;
unsafe fn test_close_preopen(dir_fd: wasi_unstable::Fd) {
let pre_fd: wasi_unstable::Fd = (libc::STDERR_FILENO + 1) as wasi_unstable::Fd;
assert_gt!(dir_fd, pre_fd, "dir_fd number");
// Try to close a preopened directory handle.
assert_eq!(
wasi_unstable::fd_close(pre_fd),
Err(wasi_unstable::ENOTSUP),
"closing a preopened file descriptor",
);
// Try to renumber over a preopened directory handle.
assert_eq!(
wasi_unstable::fd_renumber(dir_fd, pre_fd),
Err(wasi_unstable::ENOTSUP),
"renumbering over a preopened file descriptor",
);
// Ensure that dir_fd is still open.
let mut dir_fdstat: wasi_unstable::FdStat = mem::zeroed();
let mut status = wasi_fd_fdstat_get(dir_fd, &mut dir_fdstat);
assert_eq!(
status,
wasi_unstable::raw::__WASI_ESUCCESS,
"calling fd_fdstat on the scratch directory"
);
assert_eq!(
dir_fdstat.fs_filetype,
wasi_unstable::FILETYPE_DIRECTORY,
"expected the scratch directory to be a directory",
);
// Try to renumber a preopened directory handle.
assert_eq!(
wasi_unstable::fd_renumber(pre_fd, dir_fd),
Err(wasi_unstable::ENOTSUP),
"renumbering over a preopened file descriptor",
);
// Ensure that dir_fd is still open.
status = wasi_fd_fdstat_get(dir_fd, &mut dir_fdstat);
assert_eq!(
status,
wasi_unstable::raw::__WASI_ESUCCESS,
"calling fd_fdstat on the scratch directory"
);
assert_eq!(
dir_fdstat.fs_filetype,
wasi_unstable::FILETYPE_DIRECTORY,
"expected the scratch directory to be a directory",
);
}
fn main() {
let mut args = env::args();
let prog = args.next().unwrap();
let arg = if let Some(arg) = args.next() {
arg
} else {
eprintln!("usage: {} <scratch directory>", prog);
process::exit(1);
};
// Open scratch directory
let dir_fd = match open_scratch_directory(&arg) {
Ok(dir_fd) => dir_fd,
Err(err) => {
eprintln!("{}", err);
process::exit(1)
}
};
// Run the tests.
unsafe { test_close_preopen(dir_fd) }
}