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Re: [PATCH 01/18] mingw: don't call `GetFileAttributes()` twice in `mingw_lstat()`

From
Johannes Sixt <j6t@kdbg.org>
Date
Dec 18, 2025, 10:34 UTC
Message-ID
<44db571b-4fb1-43da-a7c2-eb7cc15048ab@kdbg.org>
In-Reply-To
<dae450dd0e995b26d0140cf3753d103f5470f44d.1765980535.git.gitgitgadget@gmail.com>
Am 17.12.25 um 15:08 schrieb Karsten Blees via GitGitGadget:
Show 8 quoted lines
> From: Karsten Blees <blees@dcon.de>
> 
> The Win32 API function `GetFileAttributes()` cannot handle paths with
> trailing dir separators. The current `mingw_stat()`/`mingw_lstat()`
> implementation calls `GetFileAttributes()` twice if the path has
> trailing slashes (first with the original path that was passed as
> function parameter, and and a second time with a path copy with trailing
> '/' removed).

A comment above do_lstat() mentions this procedure. This patch doesn't change the comment, but it should.

-- Hannes
Previous: Karsten Blees via GitGitGadgetNext: Karsten Blees via GitGitGadget
Message 3 of 51 in “Support symbolic links on Windows”
  1. 00/18 Support symbolic links on WindowsJohannes Schindelin via GitGitGadget, Dec 17, 2025
  2. 01/18 mingw: don't call `GetFileAttributes()` twice in `mingw_lstat()`Karsten Blees via GitGitGadget, Dec 17, 2025
  3. Johannes SixtDec 18, 2025
  4. 02/18 mingw: implement `stat()` with symlink supportKarsten Blees via GitGitGadget, Dec 17, 2025
  5. Johannes SixtDec 18, 2025
  6. Johannes SchindelinJan 9, 2026
  7. 03/18 mingw: drop the separate `do_lstat()` functionKarsten Blees via GitGitGadget, Dec 17, 2025
  8. Johannes SixtDec 18, 2025
  9. 04/18 mingw: let `mingw_lstat()` error early upon problems with reparse pointsKarsten Blees via GitGitGadget, Dec 17, 2025
  10. 05/18 mingw: teach dirent about symlinksKarsten Blees via GitGitGadget, Dec 17, 2025
  11. 06/18 mingw: compute the correct size for symlinks in `mingw_lstat()`Bill Zissimopoulos via GitGitGadget, Dec 17, 2025
  12. 07/18 mingw: factor out the retry logicKarsten Blees via GitGitGadget, Dec 17, 2025
  13. 08/18 mingw: change default of `core.symlinks` to falseKarsten Blees via GitGitGadget, Dec 17, 2025
  14. 09/18 mingw: add symlink-specific error codesKarsten Blees via GitGitGadget, Dec 17, 2025
  15. 10/18 mingw: handle symlinks to directories in `mingw_unlink()`Karsten Blees via GitGitGadget, Dec 17, 2025
  16. Ben KnobleDec 18, 2025
  17. Johannes SchindelinJan 9, 2026
  18. 11/18 mingw: support renaming symlinksKarsten Blees via GitGitGadget, Dec 17, 2025
  19. Johannes SixtDec 18, 2025
  20. Johannes SchindelinJan 9, 2026
  21. 12/18 mingw: allow `mingw_chdir()` to change to symlink-resolved directoriesKarsten Blees via GitGitGadget, Dec 17, 2025
  22. 13/18 mingw: implement `readlink()`Karsten Blees via GitGitGadget, Dec 17, 2025
  23. Johannes SixtDec 18, 2025
  24. Johannes SchindelinJan 9, 2026
  25. 14/18 mingw: implement basic `symlink()` functionality (file symlinks only)Karsten Blees via GitGitGadget, Dec 17, 2025
  26. 15/18 mingw: add support for symlinks to directoriesKarsten Blees via GitGitGadget, Dec 17, 2025
  27. 16/18 mingw: try to create symlinks without elevated permissionsJohannes Schindelin via GitGitGadget, Dec 17, 2025
  28. 17/18 mingw: emulate `stat()` a little more faithfullyJohannes Schindelin via GitGitGadget, Dec 17, 2025
  29. 18/18 mingw: special-case index entries for symlinks with buggy sizeJohannes Schindelin via GitGitGadget, Dec 17, 2025
  30. Junio C HamanoDec 18, 2025
  31. Johannes SixtDec 18, 2025
  32. Karsten BleesDec 18, 2025
  33. 00/18 Support symbolic links on WindowsJohannes Schindelin via GitGitGadget, Jan 9, 2026
  34. 01/18 mingw: don't call `GetFileAttributes()` twice in `mingw_lstat()`Karsten Blees via GitGitGadget, Jan 9, 2026
  35. 02/18 mingw: implement `stat()` with symlink supportKarsten Blees via GitGitGadget, Jan 9, 2026
  36. 03/18 mingw: drop the separate `do_lstat()` functionKarsten Blees via GitGitGadget, Jan 9, 2026
  37. 04/18 mingw: let `mingw_lstat()` error early upon problems with reparse pointsKarsten Blees via GitGitGadget, Jan 9, 2026
  38. 05/18 mingw: teach dirent about symlinksKarsten Blees via GitGitGadget, Jan 9, 2026
  39. 06/18 mingw: compute the correct size for symlinks in `mingw_lstat()`Bill Zissimopoulos via GitGitGadget, Jan 9, 2026
  40. 07/18 mingw: factor out the retry logicKarsten Blees via GitGitGadget, Jan 9, 2026
  41. 08/18 mingw: change default of `core.symlinks` to falseKarsten Blees via GitGitGadget, Jan 9, 2026
  42. 09/18 mingw: add symlink-specific error codesKarsten Blees via GitGitGadget, Jan 9, 2026
  43. 11/18 mingw: support renaming symlinksKarsten Blees via GitGitGadget, Jan 9, 2026
  44. 10/18 mingw: handle symlinks to directories in `mingw_unlink()`Karsten Blees via GitGitGadget, Jan 9, 2026
  45. 12/18 mingw: allow `mingw_chdir()` to change to symlink-resolved directoriesKarsten Blees via GitGitGadget, Jan 9, 2026
  46. 13/18 mingw: implement `readlink()`Karsten Blees via GitGitGadget, Jan 9, 2026
  47. 14/18 mingw: implement basic `symlink()` functionality (file symlinks only)Karsten Blees via GitGitGadget, Jan 9, 2026
  48. 15/18 mingw: add support for symlinks to directoriesKarsten Blees via GitGitGadget, Jan 9, 2026
  49. 16/18 mingw: try to create symlinks without elevated permissionsJohannes Schindelin via GitGitGadget, Jan 9, 2026
  50. 17/18 mingw: emulate `stat()` a little more faithfullyJohannes Schindelin via GitGitGadget, Jan 9, 2026
  51. 18/18 mingw: special-case index entries for symlinks with buggy sizeJohannes Schindelin via GitGitGadget, Jan 9, 2026

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