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feat(std/wasi) implement fd_filestat_get (#6555)

This commit is contained in:
Casper Beyer 2020-06-29 21:34:18 +08:00 committed by GitHub
parent a690a20679
commit 06f34a1aed
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GPG key ID: 4AEE18F83AFDEB23
3 changed files with 94 additions and 2 deletions

View file

@ -19,7 +19,7 @@ This module provides an implementation of the WebAssembly System Interface
- [x] fd_fdstat_get
- [ ] fd_fdstat_set_flags
- [ ] fd_fdstat_set_rights
- [ ] fd_filestat_get
- [x] fd_filestat_get
- [ ] fd_filestat_set_size
- [x] fd_filestat_set_times
- [x] fd_pread

View file

@ -523,7 +523,76 @@ export default class Module {
},
fd_filestat_get: (fd: number, buf_out: number): number => {
return ERRNO_NOSYS;
const entry = this.fds[fd];
if (!entry) {
return ERRNO_BADF;
}
const view = new DataView(this.memory.buffer);
try {
const info = Deno.fstatSync(entry.handle.rid);
if (entry.type === undefined) {
switch (true) {
case info.isFile:
entry.type = FILETYPE_REGULAR_FILE;
break;
case info.isDirectory:
entry.type = FILETYPE_DIRECTORY;
break;
case info.isSymlink:
entry.type = FILETYPE_SYMBOLIC_LINK;
break;
default:
entry.type = FILETYPE_UNKNOWN;
break;
}
}
view.setBigUint64(buf_out, BigInt(info.dev ? info.dev : 0), true);
buf_out += 8;
view.setBigUint64(buf_out, BigInt(info.ino ? info.ino : 0), true);
buf_out += 8;
view.setUint8(buf_out, entry.type);
buf_out += 8;
view.setUint32(buf_out, Number(info.nlink), true);
buf_out += 8;
view.setBigUint64(buf_out, BigInt(info.size), true);
buf_out += 8;
view.setBigUint64(
buf_out,
BigInt(info.atime ? info.atime.getTime() * 1e6 : 0),
true
);
buf_out += 8;
view.setBigUint64(
buf_out,
BigInt(info.mtime ? info.mtime.getTime() * 1e6 : 0),
true
);
buf_out += 8;
view.setBigUint64(
buf_out,
BigInt(info.birthtime ? info.birthtime.getTime() * 1e6 : 0),
true
);
buf_out += 8;
} catch (err) {
return errno(err);
}
return ERRNO_SUCCESS;
},
fd_filestat_set_size: (fd: number, size: bigint): number => {

View file

@ -0,0 +1,23 @@
// { "preopens": { "/fixture": "fixture" } }
fn main() {
let file = std::fs::File::open("/fixture/file").unwrap();
let metadata = file.metadata().unwrap();
assert!(metadata.is_file());
assert!(metadata.len() == 5);
let file = std::fs::File::open("/fixture/symlink_to_file").unwrap();
let metadata = file.metadata().unwrap();
assert!(metadata.is_file());
assert!(metadata.len() == 5);
let file = std::fs::File::open("/fixture/directory/file").unwrap();
let metadata = file.metadata().unwrap();
assert!(metadata.is_file());
assert!(metadata.len() == 15);
let file = std::fs::File::open("/fixture/directory/symlink_to_file").unwrap();
let metadata = file.metadata().unwrap();
assert!(metadata.is_file());
assert!(metadata.len() == 15);
}