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feat(std/wasi) implement fd_filestat_set_size (#6558)
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3 changed files with 30 additions and 2 deletions
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@ -20,7 +20,7 @@ This module provides an implementation of the WebAssembly System Interface
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- [ ] fd_fdstat_set_flags
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- [ ] fd_fdstat_set_rights
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- [x] fd_filestat_get
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- [ ] fd_filestat_set_size
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- [x] fd_filestat_set_size
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- [x] fd_filestat_set_times
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- [x] fd_pread
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- [x] fd_prestat_get
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@ -607,7 +607,18 @@ export default class Module {
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},
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fd_filestat_set_size: (fd: number, size: bigint): number => {
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return ERRNO_NOSYS;
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const entry = this.fds[fd];
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if (!entry) {
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return ERRNO_BADF;
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}
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try {
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Deno.ftruncateSync(entry.handle.rid, Number(size));
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} catch (err) {
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return errno(err);
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}
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return ERRNO_SUCCESS;
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},
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fd_filestat_set_times: (
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17
std/wasi/testdata/std_fs_file_set_len.rs
vendored
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17
std/wasi/testdata/std_fs_file_set_len.rs
vendored
Normal file
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@ -0,0 +1,17 @@
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// { "preopens": { "/scratch": "scratch" } }
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fn main() {
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let file = std::fs::File::create("/scratch/file").unwrap();
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assert!(file.set_len(0).is_ok());
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assert_eq!(file.metadata().unwrap().len(), 0);
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assert!(file.set_len(5).is_ok());
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assert_eq!(file.metadata().unwrap().len(), 5);
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assert!(file.set_len(25).is_ok());
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assert_eq!(file.metadata().unwrap().len(), 25);
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assert!(file.set_len(0).is_ok());
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assert_eq!(file.metadata().unwrap().len(), 0);
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}
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