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[PATCH v6 21/44] builtin/apply: make add_index_file() return -1 on error

From
Christian Couder <christian.couder@gmail.com>
Date
Jun 10, 2016, 20:10 UTC
Message-ID
<20160610201118.13813-22-chriscool@tuxfamily.org>
In-Reply-To
<20160610201118.13813-1-chriscool@tuxfamily.org>

To libify `git apply` functionality we have to signal errors to the caller instead of die()ing.

To do that in a compatible manner with the rest of the error handling in "builtin/apply.c", add_index_file() should return -1 instead of calling die().

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
---
 builtin/apply.c | 48 +++++++++++++++++++++++++++++++-----------------
 1 file changed, 31 insertions(+), 17 deletions(-)
diff --git a/builtin/apply.c b/builtin/apply.c
index 0997384..005ba78 100644
--- a/builtin/apply.c
+++ b/builtin/apply.c
@@ -4088,11 +4088,11 @@ static int remove_file(struct apply_state *state, struct patch *patch, int rmdir
 	return 0;
 }
 
-static void add_index_file(struct apply_state *state,
-			   const char *path,
-			   unsigned mode,
-			   void *buf,
-			   unsigned long size)
+static int add_index_file(struct apply_state *state,
+			  const char *path,
+			  unsigned mode,
+			  void *buf,
+			  unsigned long size)
 {
 	struct stat st;
 	struct cache_entry *ce;
@@ -4100,7 +4100,7 @@ static void add_index_file(struct apply_state *state,
 	unsigned ce_size = cache_entry_size(namelen);
 
 	if (!state->update_index)
-		return;
+		return 0;
 
 	ce = xcalloc(1, ce_size);
 	memcpy(ce->name, path, namelen);
@@ -4111,20 +4111,32 @@ static void add_index_file(struct apply_state *state,
 		const char *s;
 
 		if (!skip_prefix(buf, "Subproject commit ", &s) ||
-		    get_sha1_hex(s, ce->sha1))
-			die(_("corrupt patch for submodule %s"), path);
+		    get_sha1_hex(s, ce->sha1)) {
+			free(ce);
+			return error(_("corrupt patch for submodule %s"), path);
+		}
 	} else {
 		if (!state->cached) {
-			if (lstat(path, &st) < 0)
-				die_errno(_("unable to stat newly created file '%s'"),
-					  path);
+			if (lstat(path, &st) < 0) {
+				free(ce);
+				return error(_("unable to stat newly "
+					       "created file '%s': %s"),
+					     path, strerror(errno));
+			}
 			fill_stat_cache_info(ce, &st);
 		}
-		if (write_sha1_file(buf, size, blob_type, ce->sha1) < 0)
-			die(_("unable to create backing store for newly created file %s"), path);
+		if (write_sha1_file(buf, size, blob_type, ce->sha1) < 0) {
+			free(ce);
+			return error(_("unable to create backing store "
+				       "for newly created file %s"), path);
+		}
 	}
-	if (add_cache_entry(ce, ADD_CACHE_OK_TO_ADD) < 0)
-		die(_("unable to add cache entry for %s"), path);
+	if (add_cache_entry(ce, ADD_CACHE_OK_TO_ADD) < 0) {
+		free(ce);
+		return error(_("unable to add cache entry for %s"), path);
+	}
+
+	return 0;
 }
 
 static int try_create_file(const char *path, unsigned int mode, const char *buf, unsigned long size)
@@ -4260,8 +4272,10 @@ static void create_file(struct apply_state *state, struct patch *patch)
 	if (patch->conflicted_threeway) {
 		if (add_conflicted_stages_file(state, patch))
 			exit(1);
-	} else
-		add_index_file(state, path, mode, buf, size);
+	} else {
+		if (add_index_file(state, path, mode, buf, size))
+			exit(1);
+	}
 }
 
 /* phase zero is to remove, phase one is to create */

-- 
2.9.0.rc2.362.g3cd93d0
Previous: Christian CouderNext: Christian Couder
Message 17 of 50 in “libify apply and use lib in am, part 2”
  1. 00/44 libify apply and use lib in am, part 2Christian Couder, Jun 10, 2016
  2. 02/44 builtin/apply: make apply_patch() return -1 instead of die()ingChristian Couder, Jun 10, 2016
  3. 07/44 builtin/apply: make parse_whitespace_option() return -1 instead of die()ingChristian Couder, Jun 10, 2016
  4. 01/44 apply: move 'struct apply_state' to apply.hChristian Couder, Jun 10, 2016
  5. 06/44 builtin/apply: make parse_single_patch() return -1 on errorChristian Couder, Jun 10, 2016
  6. 10/44 apply: make init_apply_state() return -1 instead of exit()ingChristian Couder, Jun 10, 2016
  7. 04/44 builtin/apply: make find_header() return -1 instead of die()ingChristian Couder, Jun 10, 2016
  8. 16/44 builtin/apply: make gitdiff_*() return -1 on errorChristian Couder, Jun 10, 2016
  9. 15/44 builtin/apply: make gitdiff_*() return 1 at end of headerChristian Couder, Jun 10, 2016
  10. 23/44 builtin/apply: make write_out_one_result() return -1 on errorChristian Couder, Jun 10, 2016
  11. 17/44 builtin/apply: change die_on_unsafe_path() to check_unsafe_path()Christian Couder, Jun 10, 2016
  12. 25/44 builtin/apply: make try_create_file() return -1 on errorChristian Couder, Jun 10, 2016
  13. 18/44 builtin/apply: make build_fake_ancestor() return -1 on errorChristian Couder, Jun 10, 2016
  14. 27/44 builtin/apply: rename option parsing functionsChristian Couder, Jun 10, 2016
  15. 28/44 apply: rename and move opt constants to apply.hChristian Couder, Jun 10, 2016
  16. 22/44 builtin/apply: make create_file() return -1 on errorChristian Couder, Jun 10, 2016
  17. 21/44 builtin/apply: make add_index_file() return -1 on errorChristian Couder, Jun 10, 2016
  18. 26/44 builtin/apply: make create_one_file() return -1 on errorChristian Couder, Jun 10, 2016
  19. 24/44 builtin/apply: make write_out_results() return -1 on errorChristian Couder, Jun 10, 2016
  20. 31/44 run-command: make dup_devnull() non staticChristian Couder, Jun 10, 2016
  21. Johannes SixtJun 11, 2016
  22. Christian CouderJun 11, 2016
  23. 35/44 apply: add 'be_silent' variable to 'struct apply_state'Christian Couder, Jun 10, 2016
  24. 36/44 apply: make 'be_silent' incompatible with 'apply_verbosely'Christian Couder, Jun 10, 2016
  25. 37/44 apply: don't print on stdout when be_silent is setChristian Couder, Jun 10, 2016
  26. 43/44 builtin/apply: add a cli option for be_silentChristian Couder, Jun 10, 2016
  27. René ScharfeJun 10, 2016
  28. Christian CouderJun 11, 2016
  29. 38/44 usage: add set_warn_routine()Christian Couder, Jun 10, 2016
  30. 44/44 apply: use error_errno() where possibleChristian Couder, Jun 10, 2016
  31. 39/44 usage: add get_error_routine() and get_warn_routine()Christian Couder, Jun 10, 2016
  32. 41/44 am: use be_silent in 'struct apply_state' to shut up applying patchesChristian Couder, Jun 10, 2016
  33. Junio C HamanoJun 10, 2016
  34. Christian CouderJun 11, 2016
  35. 42/44 run-command: make dup_devnull() static againChristian Couder, Jun 10, 2016
  36. 40/44 apply: change error_routine when be_silent is setChristian Couder, Jun 10, 2016
  37. 30/44 apply: make some parsing functions static againChristian Couder, Jun 10, 2016
  38. 34/44 write_or_die: use warning() instead of fprintf(stderr, ...)Christian Couder, Jun 10, 2016
  39. 33/44 builtin/am: use apply api in run_apply()Christian Couder, Jun 10, 2016
  40. 19/44 builtin/apply: make remove_file() return -1 on errorChristian Couder, Jun 10, 2016
  41. 32/44 environment: add set_index_file()Christian Couder, Jun 10, 2016
  42. 20/44 builtin/apply: make add_conflicted_stages_file() return -1 on errorChristian Couder, Jun 10, 2016
  43. 14/44 builtin/apply: make parse_traditional_patch() return -1 on errorChristian Couder, Jun 10, 2016
  44. 12/44 builtin/apply: move check_apply_state() to apply.cChristian Couder, Jun 10, 2016
  45. 09/44 builtin/apply: move init_apply_state() to apply.cChristian Couder, Jun 10, 2016
  46. 11/44 builtin/apply: make check_apply_state() return -1 instead of die()ingChristian Couder, Jun 10, 2016
  47. 13/44 builtin/apply: make apply_all_patches() return -1 on errorChristian Couder, Jun 10, 2016
  48. 03/44 builtin/apply: read_patch_file() return -1 instead of die()ingChristian Couder, Jun 10, 2016
  49. 08/44 builtin/apply: make parse_ignorewhitespace_option() return -1 instead of die()ingChristian Couder, Jun 10, 2016
  50. 05/44 builtin/apply: make parse_chunk() return a negative integer on errorChristian Couder, Jun 10, 2016

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