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[PATCH 10/14] rerere: error out on autoupdate failure

From
Jonathan Nieder <jrnieder@gmail.com>
Date
Dec 3, 2014, 05:22 UTC
Message-ID
<20141203052227.GT6527@google.com>
In-Reply-To
<20141203050217.GJ6527@google.com>

We have been silently tolerating errors by returning early with an error that the caller ignores since rerere.autoupdate was introduced in v1.6.0-rc0~120^2 (2008-06-22). So on error (for example if the index is already locked), rerere can return success silently without updating the index or with only some items in the index updated.

Better to treat such failures as a fatal error so the operator can figure out what is wrong and fix it.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
---
Also sent separately at
http://thread.gmane.org/gmane.comp.version-control.git/260623
 rerere.c | 14 +++++---------
 1 file changed, 5 insertions(+), 9 deletions(-)
diff --git a/rerere.c b/rerere.c
index 1b0555f..195f663 100644
--- a/rerere.c
+++ b/rerere.c
@@ -477,27 +477,23 @@ out:
 
 static struct lock_file index_lock;
 
-static int update_paths(struct string_list *update)
+static void update_paths(struct string_list *update)
 {
 	int i;
-	int fd = hold_locked_index(&index_lock, 0);
-	int status = 0;
 
-	if (fd < 0)
-		return -1;
+	hold_locked_index(&index_lock, 1);
 
 	for (i = 0; i < update->nr; i++) {
 		struct string_list_item *item = &update->items[i];
 		if (add_file_to_cache(item->string, ADD_CACHE_IGNORE_ERRORS))
-			status = -1;
+			die("staging updated %s failed", item->string);
 	}
 
-	if (!status && active_cache_changed) {
+	if (active_cache_changed) {
 		if (write_locked_index(&the_index, &index_lock, COMMIT_LOCK))
 			die("Unable to write new index file");
-	} else if (fd >= 0)
+	} else
 		rollback_lock_file(&index_lock);
-	return status;
 }
 
 static int do_plain_rerere(struct string_list *rr, int fd)
Previous: Jonathan NiederNext: Jonathan Nieder
Message 70 of 83 in “copy.c: make copy_fd preserve meaningful errno”
  1. copy.c: make copy_fd preserve meaningful errnoStefan Beller, Nov 17, 2014
  2. Junio C HamanoNov 17, 2014
  3. Stefan BellerNov 17, 2014
  4. Jonathan NiederNov 17, 2014
  5. Stefan BellerNov 18, 2014
  6. Jonathan NiederNov 18, 2014
  7. Stefan BellerNov 18, 2014
  8. 0/14 Re: copy.c: make copy_fd preserve meaningful errnoJonathan Nieder, Dec 3, 2014
  9. 01/14 strbuf: introduce strbuf_prefixf()Jonathan Nieder, Dec 3, 2014
  10. Eric SunshineDec 3, 2014
  11. Jonathan NiederDec 3, 2014
  12. Junio C HamanoDec 3, 2014
  13. Jonathan NiederDec 3, 2014
  14. Jonathan NiederDec 3, 2014
  15. Junio C HamanoDec 3, 2014
  16. 02/14 add_to_alternates_file: respect GIT_OBJECT_DIRECTORYJonathan Nieder, Dec 3, 2014
  17. Junio C HamanoDec 3, 2014
  18. 03/14 copy_fd: pass error message back through a strbufJonathan Nieder, Dec 3, 2014
  19. Junio C HamanoDec 3, 2014
  20. Jonathan NiederDec 3, 2014
  21. Jeff KingDec 3, 2014
  22. Jonathan NiederDec 3, 2014
  23. Jeff KingDec 4, 2014
  24. Stefan BellerDec 4, 2014
  25. Jeff KingDec 4, 2014
  26. Michael HaggertyDec 10, 2014
  27. Junio C HamanoDec 10, 2014
  28. Jeff KingDec 10, 2014
  29. doc: document error handling functions and conventions (Re: [PATCH 03/14] copy_fd: pass error message back through a strbuf)Jonathan Nieder, Dec 4, 2014
  30. Junio C HamanoDec 4, 2014
  31. Jonathan NiederDec 4, 2014
  32. Jonathan NiederDec 4, 2014
  33. Jeff KingDec 4, 2014
  34. Junio C HamanoDec 4, 2014
  35. Jeff KingDec 5, 2014
  36. Junio C HamanoDec 5, 2014
  37. Jeff KingDec 7, 2014
  38. Junio C HamanoDec 9, 2014
  39. Jeff KingDec 9, 2014
  40. Junio C HamanoFeb 12, 2015
  41. Michael HaggertyFeb 17, 2015
  42. Junio C HamanoFeb 17, 2015
  43. Jeff KingFeb 17, 2015
  44. Junio C HamanoFeb 17, 2015
  45. Junio C HamanoDec 3, 2014
  46. Jonathan NiederDec 3, 2014
  47. Junio C HamanoDec 3, 2014
  48. Jonathan NiederDec 3, 2014
  49. Stefan BellerDec 3, 2014
  50. 04/14 hold_lock_file_for_append: pass error message back through a strbufJonathan Nieder, Dec 3, 2014
  51. Torsten BögershausenDec 3, 2014
  52. Jonathan NiederDec 3, 2014
  53. 05/14 lock_packed_refs: pass error message back through a strbufJonathan Nieder, Dec 3, 2014
  54. 06/14 lockfile: introduce flag for locks outside .gitJonathan Nieder, Dec 3, 2014
  55. Junio C HamanoDec 3, 2014
  56. Jonathan NiederDec 3, 2014
  57. Junio C HamanoDec 3, 2014
  58. Jonathan NiederDec 3, 2014
  59. Junio C HamanoDec 3, 2014
  60. Jonathan NiederDec 3, 2014
  61. Junio C HamanoDec 3, 2014
  62. Jeff KingDec 3, 2014
  63. Junio C HamanoDec 4, 2014
  64. Jonathan NiederDec 4, 2014
  65. 07/14 fast-import: use message from lockfile API when writing marks failsJonathan Nieder, Dec 3, 2014
  66. 08/14 credentials: use message from lockfile API when locking ~/.git-credentials failsJonathan Nieder, Dec 3, 2014
  67. 09/14 config: use message from lockfile API when locking config file failsJonathan Nieder, Dec 3, 2014
  68. Junio C HamanoDec 3, 2014
  69. Jonathan NiederDec 3, 2014
  70. 10/14 rerere: error out on autoupdate failureJonathan Nieder, Dec 3, 2014
  71. 11/14 hold_locked_index: pass error message back through a strbufJonathan Nieder, Dec 3, 2014
  72. 12/14 hold_lock_file_for_update: pass error message back through a strbufJonathan Nieder, Dec 3, 2014
  73. Jonathan NiederDec 3, 2014
  74. 13/14 lockfile: remove unused function 'unable_to_lock_die'Jonathan Nieder, Dec 3, 2014
  75. 14/14 lockfile: make 'unable_to_lock_message' privateJonathan Nieder, Dec 3, 2014
  76. Stefan BellerDec 3, 2014
  77. Junio C HamanoNov 18, 2014
  78. Junio C HamanoNov 18, 2014
  79. Michael HaggertyNov 21, 2014
  80. Michael HaggertyNov 21, 2014
  81. Junio C HamanoNov 21, 2014
  82. Jeff KingNov 21, 2014
  83. Junio C HamanoNov 21, 2014

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