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[PATCH v2 03/21] Convert GIT_SHA1_RAWSZ used for allocation to GIT_MAX_RAWSZ

From
brian m. carlson <sandals@crustytoothpaste.net>
Date
Mar 26, 2017, 16:01 UTC
Message-ID
<20170326160143.769630-4-sandals@crustytoothpaste.net>
In-Reply-To
<20170326160143.769630-1-sandals@crustytoothpaste.net>

Since we will likely be introducing a new hash function at some point, and that hash function might be longer than 20 bytes, use the constant GIT_MAX_RAWSZ, which is designed to be suitable for allocations, instead of GIT_SHA1_RAWSZ. This will ease the transition down the line by distinguishing between places where we need to allocate memory suitable for the largest hash from those where we need to handle the current hash.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
---
 builtin/patch-id.c     | 2 +-
 builtin/receive-pack.c | 2 +-
 cache.h                | 2 +-
 patch-ids.c            | 2 +-
 patch-ids.h            | 2 +-
 sha1_file.c            | 4 ++--
 sha1_name.c            | 4 ++--
 wt-status.h            | 2 +-
 8 files changed, 10 insertions(+), 10 deletions(-)
diff --git a/builtin/patch-id.c b/builtin/patch-id.c
index a84d0003a3..81552e02e4 100644
--- a/builtin/patch-id.c
+++ b/builtin/patch-id.c
@@ -55,7 +55,7 @@ static int scan_hunk_header(const char *p, int *p_before, int *p_after)
 
 static void flush_one_hunk(struct object_id *result, git_SHA_CTX *ctx)
 {
-	unsigned char hash[GIT_SHA1_RAWSZ];
+	unsigned char hash[GIT_MAX_RAWSZ];
 	unsigned short carry = 0;
 	int i;
 
diff --git a/builtin/receive-pack.c b/builtin/receive-pack.c
index fb2a090a0c..feafb076a4 100644
--- a/builtin/receive-pack.c
+++ b/builtin/receive-pack.c
@@ -1162,7 +1162,7 @@ static void check_aliased_update(struct command *cmd, struct string_list *list)
 	const char *dst_name;
 	struct string_list_item *item;
 	struct command *dst_cmd;
-	unsigned char sha1[GIT_SHA1_RAWSZ];
+	unsigned char sha1[GIT_MAX_RAWSZ];
 	int flag;
 
 	strbuf_addf(&buf, "%s%s", get_git_namespace(), cmd->ref_name);
diff --git a/cache.h b/cache.h
index af4b2c78cf..179bdc5da2 100644
--- a/cache.h
+++ b/cache.h
@@ -968,7 +968,7 @@ extern char *sha1_pack_index_name(const unsigned char *sha1);
 extern const char *find_unique_abbrev(const unsigned char *sha1, int len);
 extern int find_unique_abbrev_r(char *hex, const unsigned char *sha1, int len);
 
-extern const unsigned char null_sha1[GIT_SHA1_RAWSZ];
+extern const unsigned char null_sha1[GIT_MAX_RAWSZ];
 extern const struct object_id null_oid;
 
 static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2)
diff --git a/patch-ids.c b/patch-ids.c
index ce285c2e0c..fa8f11de82 100644
--- a/patch-ids.c
+++ b/patch-ids.c
@@ -71,7 +71,7 @@ static int init_patch_id_entry(struct patch_id *patch,
 			       struct commit *commit,
 			       struct patch_ids *ids)
 {
-	unsigned char header_only_patch_id[GIT_SHA1_RAWSZ];
+	unsigned char header_only_patch_id[GIT_MAX_RAWSZ];
 
 	patch->commit = commit;
 	if (commit_patch_id(commit, &ids->diffopts, header_only_patch_id, 1))
diff --git a/patch-ids.h b/patch-ids.h
index 0f34ea11ea..b9e5751f8e 100644
--- a/patch-ids.h
+++ b/patch-ids.h
@@ -3,7 +3,7 @@
 
 struct patch_id {
 	struct hashmap_entry ent;
-	unsigned char patch_id[GIT_SHA1_RAWSZ];
+	unsigned char patch_id[GIT_MAX_RAWSZ];
 	struct commit *commit;
 };
 
diff --git a/sha1_file.c b/sha1_file.c
index e763000d34..b4666ee5c2 100644
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -1606,7 +1606,7 @@ static void mark_bad_packed_object(struct packed_git *p,
 		if (!hashcmp(sha1, p->bad_object_sha1 + GIT_SHA1_RAWSZ * i))
 			return;
 	p->bad_object_sha1 = xrealloc(p->bad_object_sha1,
-				      st_mult(GIT_SHA1_RAWSZ,
+				      st_mult(GIT_MAX_RAWSZ,
 					      st_add(p->num_bad_objects, 1)));
 	hashcpy(p->bad_object_sha1 + GIT_SHA1_RAWSZ * p->num_bad_objects, sha1);
 	p->num_bad_objects++;
@@ -3913,7 +3913,7 @@ static int check_stream_sha1(git_zstream *stream,
 			     const unsigned char *expected_sha1)
 {
 	git_SHA_CTX c;
-	unsigned char real_sha1[GIT_SHA1_RAWSZ];
+	unsigned char real_sha1[GIT_MAX_RAWSZ];
 	unsigned char buf[4096];
 	unsigned long total_read;
 	int status = Z_OK;
diff --git a/sha1_name.c b/sha1_name.c
index 964201bc26..3db166b40b 100644
--- a/sha1_name.c
+++ b/sha1_name.c
@@ -16,11 +16,11 @@ typedef int (*disambiguate_hint_fn)(const unsigned char *, void *);
 struct disambiguate_state {
 	int len; /* length of prefix in hex chars */
 	char hex_pfx[GIT_MAX_HEXSZ + 1];
-	unsigned char bin_pfx[GIT_SHA1_RAWSZ];
+	unsigned char bin_pfx[GIT_MAX_RAWSZ];
 
 	disambiguate_hint_fn fn;
 	void *cb_data;
-	unsigned char candidate[GIT_SHA1_RAWSZ];
+	unsigned char candidate[GIT_MAX_RAWSZ];
 	unsigned candidate_exists:1;
 	unsigned candidate_checked:1;
 	unsigned candidate_ok:1;
diff --git a/wt-status.h b/wt-status.h
index 54fec77032..6018c627b1 100644
--- a/wt-status.h
+++ b/wt-status.h
@@ -80,7 +80,7 @@ struct wt_status {
 	int hints;
 
 	enum wt_status_format status_format;
-	unsigned char sha1_commit[GIT_SHA1_RAWSZ]; /* when not Initial */
+	unsigned char sha1_commit[GIT_MAX_RAWSZ]; /* when not Initial */
 
 	/* These are computed during processing of the individual sections */
 	int commitable;
Previous: brian m. carlsonNext: brian m. carlson
Message 27 of 40 in “object_id part 7”
  1. 00/21 object_id part 7brian m. carlson, Mar 26, 2017
  2. 08/21 fsck: convert init_skiplist to struct object_idbrian m. carlson, Mar 26, 2017
  3. 12/21 sha1_name: convert disambiguate_hint_fn to take object_idbrian m. carlson, Mar 26, 2017
  4. 16/21 Make sha1_array_append take a struct object_id *brian m. carlson, Mar 26, 2017
  5. Jeff KingMar 28, 2017
  6. Junio C HamanoMar 28, 2017
  7. brian m. carlsonMar 29, 2017
  8. Junio C HamanoMar 29, 2017
  9. brian m. carlsonMar 29, 2017
  10. 09/21 parse-options-cb: convert sha1_array_append caller to struct object_idbrian m. carlson, Mar 26, 2017
  11. 18/21 Convert sha1_array_lookup to take struct object_idbrian m. carlson, Mar 26, 2017
  12. 17/21 Convert remaining callers of sha1_array_lookup to object_idbrian m. carlson, Mar 26, 2017
  13. 10/21 test-sha1-array: convert most code to struct object_idbrian m. carlson, Mar 26, 2017
  14. 21/21 Documentation: update and rename api-sha1-array.txtbrian m. carlson, Mar 26, 2017
  15. 07/21 builtin/receive-pack: convert portions to struct object_idbrian m. carlson, Mar 26, 2017
  16. Jeff KingMar 28, 2017
  17. brian m. carlsonMar 29, 2017
  18. Jeff KingMar 30, 2017
  19. 20/21 Rename sha1_array to oid_arraybrian m. carlson, Mar 26, 2017
  20. 05/21 builtin/pull: convert portions to struct object_idbrian m. carlson, Mar 26, 2017
  21. 19/21 Convert sha1_array_for_each_unique and for_each_abbrev to object_idbrian m. carlson, Mar 26, 2017
  22. 06/21 builtin/receive-pack: fix incorrect pointer arithmeticbrian m. carlson, Mar 26, 2017
  23. Jeff KingMar 28, 2017
  24. Junio C HamanoMar 28, 2017
  25. 14/21 builtin/pull: convert to struct object_idbrian m. carlson, Mar 26, 2017
  26. 01/21 Define new hash-size constants for allocating memorybrian m. carlson, Mar 26, 2017
  27. 03/21 Convert GIT_SHA1_RAWSZ used for allocation to GIT_MAX_RAWSZbrian m. carlson, Mar 26, 2017
  28. 11/21 sha1_name: convert struct disambiguate_state to object_idbrian m. carlson, Mar 26, 2017
  29. 15/21 sha1-array: convert internal storage for struct sha1_array to object_idbrian m. carlson, Mar 26, 2017
  30. Jeff KingMar 28, 2017
  31. 13/21 submodule: convert check_for_new_submodule_commits to object_idbrian m. carlson, Mar 26, 2017
  32. 02/21 Convert GIT_SHA1_HEXSZ used for allocation to GIT_MAX_HEXSZbrian m. carlson, Mar 26, 2017
  33. 04/21 builtin/diff: convert to struct object_idbrian m. carlson, Mar 26, 2017
  34. Jeff KingMar 28, 2017
  35. brian m. carlsonMar 28, 2017
  36. Jeff KingMar 28, 2017
  37. Jeff KingMar 28, 2017
  38. Junio C HamanoMar 28, 2017
  39. Jeff KingMar 28, 2017
  40. Junio C HamanoMar 28, 2017

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