111 lines
3.7 KiB
Rust
111 lines
3.7 KiB
Rust
use more_asserts::assert_gt;
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use std::{env, process};
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use wasi_tests::open_scratch_directory;
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unsafe fn test_path_filestat(dir_fd: wasi::Fd) {
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let fdstat = wasi::fd_fdstat_get(dir_fd).expect("fd_fdstat_get");
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assert_ne!(
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fdstat.fs_rights_base & wasi::RIGHTS_PATH_FILESTAT_GET,
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0,
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"the scratch directory should have RIGHT_PATH_FILESTAT_GET as base right",
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);
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// Create a file in the scratch directory.
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let file_fd = wasi::path_open(
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dir_fd,
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0,
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"file",
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wasi::OFLAGS_CREAT,
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wasi::RIGHTS_FD_READ | wasi::RIGHTS_FD_WRITE | wasi::RIGHTS_PATH_FILESTAT_GET,
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0,
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0,
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)
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.expect("opening a file");
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assert_gt!(
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file_fd,
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libc::STDERR_FILENO as wasi::Fd,
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"file descriptor range check",
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);
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// Check file size
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let file_stat = wasi::path_filestat_get(dir_fd, 0, "file").expect("reading file stats");
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assert_eq!(file_stat.size, 0, "file size should be 0");
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// Create a symlink
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wasi::path_symlink("file", dir_fd, "symlink").expect("creating symlink to a file");
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// Check path_filestat_set_times on the symlink itself
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let sym_stat = wasi::path_filestat_get(dir_fd, 0, "symlink").expect("reading symlink stats");
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// Modify mtim of symlink
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let sym_new_mtim = sym_stat.mtim - 200;
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wasi::path_filestat_set_times(dir_fd, 0, "symlink", 0, sym_new_mtim, wasi::FSTFLAGS_MTIM)
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.expect("path_filestat_set_times should succeed on symlink");
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// Check that symlink mtim motification worked
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let modified_sym_stat = wasi::path_filestat_get(dir_fd, 0, "symlink")
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.expect("reading file stats after path_filestat_set_times");
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assert_eq!(
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modified_sym_stat.mtim, sym_new_mtim,
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"symlink mtim should change"
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);
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// Check that pointee mtim is not modified
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let unmodified_file_stat = wasi::path_filestat_get(dir_fd, 0, "file")
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.expect("reading file stats after path_filestat_set_times");
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assert_eq!(
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unmodified_file_stat.mtim, file_stat.mtim,
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"file mtim should not change"
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);
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// Now, dereference the symlink
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let deref_sym_stat =
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wasi::path_filestat_get(dir_fd, wasi::LOOKUPFLAGS_SYMLINK_FOLLOW, "symlink")
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.expect("reading file stats on the dereferenced symlink");
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assert_eq!(
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deref_sym_stat.mtim, file_stat.mtim,
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"symlink mtim should be equal to pointee's when dereferenced"
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);
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// Finally, change stat of the original file by dereferencing the symlink
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wasi::path_filestat_set_times(
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dir_fd,
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wasi::LOOKUPFLAGS_SYMLINK_FOLLOW,
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"symlink",
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0,
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sym_stat.mtim,
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wasi::FSTFLAGS_MTIM,
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)
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.expect("path_filestat_set_times should succeed on setting stat on original file");
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let new_file_stat = wasi::path_filestat_get(dir_fd, 0, "file")
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.expect("reading file stats after path_filestat_set_times");
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assert_eq!(new_file_stat.mtim, sym_stat.mtim, "mtim should change");
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wasi::fd_close(file_fd).expect("closing a file");
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wasi::path_unlink_file(dir_fd, "symlink").expect("removing a symlink");
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wasi::path_unlink_file(dir_fd, "file").expect("removing a file");
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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_path_filestat(dir_fd) }
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}
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