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fs: fix operation not permitted #44786

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@thoqbk thoqbk commented Sep 25, 2022

fix: #44720

issue:

  • copyDir() calls checkPathsSync(), which invokes lstat()
    causes error because of not checking the opts.filter

changes:

  • check opts.filter before calling checkPathsSync and copy logic
  • cleanup startCopy function

fix: nodejs#44720

issue:
- `copyDir()` calls `checkPathsSync()`, which invokes `lstat()`
which causes error because of not checking the opts.filter

changes:
- check opts.filter before calling `checkPathsSync` and copy logic
- cleanup `startCopy` function
@nodejs-github-bot nodejs-github-bot added fs Issues and PRs related to the fs subsystem / file system. needs-ci PRs that need a full CI run. labels Sep 25, 2022
@lpinca lpinca added the request-ci Add this label to start a Jenkins CI on a PR. label Sep 26, 2022
@github-actions github-actions bot removed the request-ci Add this label to start a Jenkins CI on a PR. label Sep 26, 2022
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Can you include a test?

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thoqbk commented Sep 29, 2022

Can you include a test?

test was added

filter: path => !path.includes('foo'),
recursive: true,
});
}
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@thoqbk thoqbk Oct 1, 2022

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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]
    }

@thoqbk thoqbk force-pushed the fix-operation-not-permitted branch 2 times, most recently from 4c84e46 to aa3e4f1 Compare October 1, 2022 11:18
// It should not throw exception if child folder
// does not pass filter function
{
// Mimic there's a file in dest with the same name as the child folder in src
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The start of this sentence is a bit awkward.

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Updated

@thoqbk thoqbk force-pushed the fix-operation-not-permitted branch from aa3e4f1 to ec30bf0 Compare October 2, 2022 14:50
@thoqbk thoqbk requested review from jasnell and joyeecheung and removed request for joyeecheung and jasnell October 2, 2022 14:51
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LGTM with a nit to clarify the comments.

test/parallel/test-fs-cp.mjs Outdated Show resolved Hide resolved
Co-authored-by: Joyee Cheung <joyeec9h3@gmail.com>
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thoqbk commented Oct 24, 2022

Rework PR #45143

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[fs.cp] fails with EPERM despite filter
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