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[PATCH 11/15] sequencer: lib'ify save_todo()

From
Johannes Schindelin <johannes.schindelin@gmx.de>
Date
Aug 23, 2016, 16:07 UTC
Message-ID
<fff4cdfa36355af7917a06be9f67b50b56bfce99.1471968378.git.johannes.schindelin@gmx.de>
In-Reply-To
<cover.1471968378.git.johannes.schindelin@gmx.de>

To be truly useful, the sequencer should never die() but always return an error.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
---
 sequencer.c | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)
diff --git a/sequencer.c b/sequencer.c
index 3e07aa0..17f2c8b 100644
--- a/sequencer.c
+++ b/sequencer.c
@@ -929,24 +929,29 @@ static int sequencer_rollback(struct replay_opts *opts)
 	return -1;
 }
 
-static void save_todo(struct commit_list *todo_list, struct replay_opts *opts)
+static int save_todo(struct commit_list *todo_list, struct replay_opts *opts)
 {
 	static struct lock_file todo_lock;
 	struct strbuf buf = STRBUF_INIT;
 	int fd;
 
-	fd = hold_lock_file_for_update(&todo_lock, git_path_todo_file(), LOCK_DIE_ON_ERROR);
+	fd = hold_lock_file_for_update(&todo_lock, git_path_todo_file(), 0);
+	if (fd < 0)
+		return error_errno(_("Could not lock '%s'"),
+				   git_path_todo_file());
 	if (format_todo(&buf, todo_list, opts) < 0)
-		die(_("Could not format %s."), git_path_todo_file());
+		return error(_("Could not format %s."), git_path_todo_file());
 	if (write_in_full(fd, buf.buf, buf.len) < 0) {
 		strbuf_release(&buf);
-		die_errno(_("Could not write to %s"), git_path_todo_file());
+		return error_errno(_("Could not write to %s"),
+				   git_path_todo_file());
 	}
 	if (commit_lock_file(&todo_lock) < 0) {
 		strbuf_release(&buf);
-		die(_("Error wrapping up %s."), git_path_todo_file());
+		return error(_("Error wrapping up %s."), git_path_todo_file());
 	}
 	strbuf_release(&buf);
+	return 0;
 }
 
 static void save_opts(struct replay_opts *opts)
@@ -995,7 +1000,8 @@ static int pick_commits(struct commit_list *todo_list, struct replay_opts *opts)
 		return -1;
 
 	for (cur = todo_list; cur; cur = cur->next) {
-		save_todo(cur, opts);
+		if (save_todo(cur, opts))
+			return -1;
 		res = do_pick_commit(cur->item, opts);
 		if (res)
 			return res;
-- 
2.10.0.rc1.99.gcd66998
Previous: Johannes SchindelinNext: Eric Sunshine
Message 33 of 91 in “Lib'ify quite a few functions in sequencer.c”
  1. 00/15 Lib'ify quite a few functions in sequencer.cJohannes Schindelin, Aug 23, 2016
  2. 07/15 sequencer: lib'ify read_populate_opts()Johannes Schindelin, Aug 23, 2016
  3. Junio C HamanoAug 26, 2016
  4. Johannes SchindelinAug 29, 2016
  5. 01/15 sequencer: lib'ify write_message()Johannes Schindelin, Aug 23, 2016
  6. Eric SunshineAug 24, 2016
  7. Johannes SchindelinAug 24, 2016
  8. 06/15 sequencer: lib'ify read_populate_todo()Johannes Schindelin, Aug 23, 2016
  9. Eric SunshineAug 24, 2016
  10. Johannes SchindelinAug 24, 2016
  11. Junio C HamanoAug 25, 2016
  12. Johannes SchindelinAug 26, 2016
  13. Junio C HamanoAug 26, 2016
  14. 04/15 sequencer: lib'ify prepare_revs()Johannes Schindelin, Aug 23, 2016
  15. Junio C HamanoAug 25, 2016
  16. Johannes SchindelinAug 26, 2016
  17. 02/15 sequencer: lib'ify do_recursive_merge()Johannes Schindelin, Aug 23, 2016
  18. Eric SunshineAug 24, 2016
  19. Johannes SchindelinAug 24, 2016
  20. 03/15 sequencer: lib'ify do_pick_commit()Johannes Schindelin, Aug 23, 2016
  21. Junio C HamanoAug 25, 2016
  22. Johannes SchindelinAug 26, 2016
  23. 13/15 sequencer: lib'ify sequencer_pick_revisions()Johannes Schindelin, Aug 23, 2016
  24. 15/15 sequencer: do not die() in fast_forward_to()Johannes Schindelin, Aug 23, 2016
  25. 08/15 sequencer: lib'ify walk_revs_populate_todo()Johannes Schindelin, Aug 23, 2016
  26. 05/15 sequencer: lib'ify read_and_refresh_cache()Johannes Schindelin, Aug 23, 2016
  27. Eric SunshineAug 24, 2016
  28. Johannes SchindelinAug 24, 2016
  29. Junio C HamanoAug 25, 2016
  30. 09/15 sequencer: lib'ify create_seq_dir()Johannes Schindelin, Aug 23, 2016
  31. Eric SunshineAug 24, 2016
  32. Johannes SchindelinAug 24, 2016
  33. 11/15 sequencer: lib'ify save_todo()Johannes Schindelin, Aug 23, 2016
  34. Eric SunshineAug 24, 2016
  35. Johannes SchindelinAug 24, 2016
  36. 10/15 sequencer: lib'ify save_head()Johannes Schindelin, Aug 23, 2016
  37. Eric SunshineAug 24, 2016
  38. Johannes SchindelinAug 24, 2016
  39. 12/15 sequencer: lib'ify save_opts()Johannes Schindelin, Aug 23, 2016
  40. Junio C HamanoAug 26, 2016
  41. Johannes SchindelinAug 29, 2016
  42. 14/15 sequencer: do not die() in do_pick_commit()Johannes Schindelin, Aug 23, 2016
  43. 00/14 Lib'ify quite a few functions in sequencer.cJohannes Schindelin, Aug 26, 2016
  44. 05/14 sequencer: lib'ify do_pick_commit()Johannes Schindelin, Aug 26, 2016
  45. Junio C HamanoAug 29, 2016
  46. 09/14 sequencer: lib'ify read_populate_todo()Johannes Schindelin, Aug 26, 2016
  47. 12/14 sequencer: lib'ify save_head()Johannes Schindelin, Aug 26, 2016
  48. Junio C HamanoAug 29, 2016
  49. Johannes SchindelinAug 30, 2016
  50. 11/14 sequencer: lib'ify create_seq_dir()Johannes Schindelin, Aug 26, 2016
  51. 10/14 sequencer: lib'ify read_populate_opts()Johannes Schindelin, Aug 26, 2016
  52. Junio C HamanoAug 29, 2016
  53. Junio C HamanoAug 29, 2016
  54. Johannes SchindelinAug 30, 2016
  55. Junio C HamanoAug 30, 2016
  56. 14/14 sequencer: lib'ify save_opts()Johannes Schindelin, Aug 26, 2016
  57. 04/14 sequencer: lib'ify do_recursive_merge()Johannes Schindelin, Aug 26, 2016
  58. 03/14 sequencer: lib'ify write_message()Johannes Schindelin, Aug 26, 2016
  59. Junio C HamanoAug 29, 2016
  60. Johannes SchindelinAug 30, 2016
  61. 13/14 sequencer: lib'ify save_todo()Johannes Schindelin, Aug 26, 2016
  62. 06/14 sequencer: lib'ify walk_revs_populate_todo()Johannes Schindelin, Aug 26, 2016
  63. 07/14 sequencer: lib'ify prepare_revs()Johannes Schindelin, Aug 26, 2016
  64. 08/14 sequencer: lib'ify read_and_refresh_cache()Johannes Schindelin, Aug 26, 2016
  65. Junio C HamanoAug 29, 2016
  66. Johannes SchindelinAug 30, 2016
  67. Junio C HamanoAug 30, 2016
  68. 01/14 sequencer: lib'ify sequencer_pick_revisions()Johannes Schindelin, Aug 26, 2016
  69. 02/14 sequencer: do not die() in do_pick_commit()Johannes Schindelin, Aug 26, 2016
  70. Junio C HamanoAug 29, 2016
  71. 00/17 Lib'ify quite a few functions in sequencer.cJohannes Schindelin, Sep 9, 2016
  72. 01/17 sequencer: lib'ify sequencer_pick_revisions()Johannes Schindelin, Sep 9, 2016
  73. 02/17 sequencer: do not die() in do_pick_commit()Johannes Schindelin, Sep 9, 2016
  74. 04/17 sequencer: lib'ify do_recursive_merge()Johannes Schindelin, Sep 9, 2016
  75. 05/17 sequencer: lib'ify do_pick_commit()Johannes Schindelin, Sep 9, 2016
  76. 06/17 sequencer: lib'ify walk_revs_populate_todo()Johannes Schindelin, Sep 9, 2016
  77. 09/17 sequencer: lib'ify read_populate_todo()Johannes Schindelin, Sep 9, 2016
  78. 08/17 sequencer: lib'ify read_and_refresh_cache()Johannes Schindelin, Sep 9, 2016
  79. 03/17 sequencer: lib'ify write_message()Johannes Schindelin, Sep 9, 2016
  80. 12/17 sequencer: lib'ify save_head()Johannes Schindelin, Sep 9, 2016
  81. 10/17 sequencer: lib'ify read_populate_opts()Johannes Schindelin, Sep 9, 2016
  82. 11/17 sequencer: lib'ify create_seq_dir()Johannes Schindelin, Sep 9, 2016
  83. 14/17 sequencer: lib'ify save_opts()Johannes Schindelin, Sep 9, 2016
  84. 16/17 lib'ify checkout_fast_forward_to()Johannes Schindelin, Sep 9, 2016
  85. Junio C HamanoSep 9, 2016
  86. Johannes SchindelinSep 11, 2016
  87. 13/17 sequencer: lib'ify save_todo()Johannes Schindelin, Sep 9, 2016
  88. 15/17 sequencer: lib'ify fast_forward_to()Johannes Schindelin, Sep 9, 2016
  89. 07/17 sequencer: lib'ify prepare_revs()Johannes Schindelin, Sep 9, 2016
  90. 17/17 sequencer: ensure to release the lock when we could not read the indexJohannes Schindelin, Sep 9, 2016
  91. Junio C HamanoSep 9, 2016

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