53 lines
1.6 KiB
Rust
53 lines
1.6 KiB
Rust
use std::{env, process};
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use wasi_tests::{assert_errno, open_scratch_directory, TESTCONFIG};
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unsafe fn test_dangling_symlink(dir_fd: wasi::Fd) {
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if TESTCONFIG.support_dangling_filesystem() {
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// First create a dangling symlink.
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wasi::path_symlink("target", dir_fd, "symlink").expect("creating a symlink");
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// Try to open it as a directory with O_NOFOLLOW.
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assert_errno!(
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wasi::path_open(dir_fd, 0, "symlink", wasi::OFLAGS_DIRECTORY, 0, 0, 0)
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.expect_err("opening a dangling symlink as a directory")
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.raw_error(),
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wasi::ERRNO_NOTDIR,
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wasi::ERRNO_LOOP
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);
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// Try to open it as a file with O_NOFOLLOW.
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assert_errno!(
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wasi::path_open(dir_fd, 0, "symlink", 0, 0, 0, 0)
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.expect_err("opening a dangling symlink as a file")
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.raw_error(),
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wasi::ERRNO_LOOP
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);
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// Clean up.
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wasi::path_unlink_file(dir_fd, "symlink").expect("failed to remove file");
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}
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}
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fn main() {
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let mut args = env::args();
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let prog = args.next().unwrap();
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let arg = if let Some(arg) = args.next() {
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arg
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} else {
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eprintln!("usage: {} <scratch directory>", prog);
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process::exit(1);
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};
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// Open scratch directory
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let dir_fd = match open_scratch_directory(&arg) {
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Ok(dir_fd) => dir_fd,
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Err(err) => {
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eprintln!("{}", err);
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process::exit(1)
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}
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};
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// Run the tests.
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unsafe { test_dangling_symlink(dir_fd) }
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}
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