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fs: fix operation not permitted #44786

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fs: fix operation not permitted #44786

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980e96a
fs: fix operation not permitted
thoqbk Sep 25, 2022
ec30bf0
fs: add test for cpSync
thoqbk Oct 1, 2022
9382365
fs: update comment in tests for copy
thoqbk Oct 6, 2022
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9 changes: 2 additions & 7 deletions lib/internal/fs/cp/cp-sync.js
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Expand Up @@ -158,11 +158,6 @@ function handleFilterAndCopy(destStat, src, dest, opts) {
return getStats(destStat, src, dest, opts);
}

function startCopy(destStat, src, dest, opts) {
if (opts.filter && !opts.filter(src, dest)) return;
return getStats(destStat, src, dest, opts);
}

function getStats(destStat, src, dest, opts) {
const statSyncFn = opts.dereference ? statSync : lstatSync;
const srcStat = statSyncFn(src);
Expand Down Expand Up @@ -284,9 +279,9 @@ function copyDir(src, dest, opts) {
const { name } = dirent;
const srcItem = join(src, name);
const destItem = join(dest, name);
if (opts.filter && !opts.filter(srcItem, destItem)) continue;
const { destStat } = checkPathsSync(srcItem, destItem, opts);

startCopy(destStat, srcItem, destItem, opts);
getStats(destStat, srcItem, destItem, opts);
}
} finally {
dir.closeSync();
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18 changes: 18 additions & 0 deletions test/parallel/test-fs-cp.mjs
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Expand Up @@ -336,6 +336,24 @@ if (!isWindows) {
}, { code: 'ERR_INVALID_RETURN_VALUE' });
}

// It should not throw exception if child folder
// does not pass filter function
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{
// Create a file in dest with the same name as a child folder in src
// expect: this shouldn't throw error since filtered out by filter function
const src = nextdir();
mkdirSync(join(src, 'foo'), mustNotMutateObjectDeep({ recursive: true }));

const dest = nextdir();
mkdirSync(dest, mustNotMutateObjectDeep({ recursive: true }));
writeFileSync(join(dest, 'foo'), 'foo-content', mustNotMutateObjectDeep({ mode: 0o444 }));

cpSync(src, dest, {
filter: (path) => !path.includes('foo'),
recursive: true,
});
}
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@thoqbk thoqbk Oct 1, 2022 •
edited

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Before fixing, when I run this test it throws the following error because checkPathsSync(srcItem, destItem, opts) gets called even though the srcItem shouldn't be copied:

    SystemError [ERR_FS_CP_DIR_TO_NON_DIR]: Cannot overwrite directory with non-directory: cp returned EISDIR (cannot overwrite directory /Users/xxx/dev/node/test/.tmp.0/copy_28/foo with non-directory /Users/xxx/dev/node/test/.tmp.0/copy_29/foo) /Users/xxx/dev/node/test/.tmp.0/copy_29/foo
        at new SystemError (node:internal/errors:244:5)
        at new NodeError (node:internal/errors:355:7)
        at checkPathsSync (node:internal/fs/cp/cp-sync:77:13)
        at copyDir (node:internal/fs/cp/cp-sync:287:28)
        at onDir (node:internal/fs/cp/cp-sync:268:10)
        at getStats (node:internal/fs/cp/cp-sync:171:12)
        at handleFilterAndCopy (node:internal/fs/cp/cp-sync:158:10)
        at cpSyncFn (node:internal/fs/cp/cp-sync:60:10)
        at cpSync (node:fs:2899:3)
        at file:///Users/xxx/dev/node/test/parallel/test-fs-cp.mjs:353:3 {
      code: 'ERR_FS_CP_DIR_TO_NON_DIR',
      info: {
        message: 'cannot overwrite directory /Users/xxx/dev/node/test/.tmp.0/copy_28/foo with non-directory /Users/xxx/dev/node/test/.tmp.0/copy_29/foo',
        path: '/Users/xxx/dev/node/test/.tmp.0/copy_29/foo',
        syscall: 'cp',
        errno: 21,
        code: 'EISDIR'
      },
      errno: [Getter/Setter],
      syscall: [Getter/Setter],
      path: [Getter/Setter]
    }


// It throws error if errorOnExist is true, force is false, and file or folder
// copied over.
{
Expand Down