[PATCH v2 1/4] fsmonitor OSX: compile with DC_SHA1=YesPlease

From: "Ævar Arnfjörð Bjarmason" <avarab@gmail.com>
To: git@vger.kernel.org
Cc: "Junio C Hamano" <gitster@pobox.com>,
	"Mike Hommey" <mh@glandium.org>,
	"brian m . carlson" <sandals@crustytoothpaste.net>,
	"Carlo Marcelo Arenas Belón" <carenas@gmail.com>,
	"Eric Sunshine" <sunshine@sunshineco.com>,
	"Glen Choo" <chooglen@google.com>,
	"Eric DeCosta" <edecosta@mathworks.com>,
	"Ævar Arnfjörð Bjarmason" <avarab@gmail.com>
Subject: [PATCH v2 1/4] fsmonitor OSX: compile with DC_SHA1=YesPlease
Date: Wed, 19 Oct 2022 03:03:19 +0200	[thread overview]
Message-ID: <patch-v2-1.4-392fabdb456-20221019T010222Z-avarab@gmail.com> (raw)
In-Reply-To: <cover-v2-0.4-00000000000-20221019T010222Z-avarab@gmail.com>

As we'll address in subsequent commits the "DC_SHA1=YesPlease" is not
on by default on OSX, instead we use Apple Common Crypto's SHA-1
implementation.

In 6beb2688d33 (fsmonitor: relocate socket file if .git directory is
remote, 2022-10-04) the build was broken with "DC_SHA1=YesPlease" (and
probably other non-"APPLE_COMMON_CRYPTO" SHA-1 backends).

So let's extract the fix for this from [1] to get the build working
again with "DC_SHA1=YesPlease". In addition to the fix in [1] we also
need to replace "SHA_DIGEST_LENGTH" with "GIT_MAX_RAWSZ".

1. https://lore.kernel.org/git/c085fc15b314abcb5e5ca6b4ee5ac54a28327cab.1665326258.git.gitgitgadget@gmail.com/

Signed-off-by: Eric DeCosta <edecosta@mathworks.com>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
---
 compat/fsmonitor/fsm-ipc-darwin.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/compat/fsmonitor/fsm-ipc-darwin.c b/compat/fsmonitor/fsm-ipc-darwin.c
index ce843d63348..d67b0ee50d3 100644
--- a/compat/fsmonitor/fsm-ipc-darwin.c
+++ b/compat/fsmonitor/fsm-ipc-darwin.c
@@ -10,10 +10,10 @@ static GIT_PATH_FUNC(fsmonitor_ipc__get_default_path, "fsmonitor--daemon.ipc")
 const char *fsmonitor_ipc__get_path(struct repository *r)
 {
 	static const char *ipc_path = NULL;
-	SHA_CTX sha1ctx;
+	git_SHA_CTX sha1ctx;
 	char *sock_dir = NULL;
 	struct strbuf ipc_file = STRBUF_INIT;
-	unsigned char hash[SHA_DIGEST_LENGTH];
+	unsigned char hash[GIT_MAX_RAWSZ];
 
 	if (!r)
 		BUG("No repository passed into fsmonitor_ipc__get_path");
@@ -28,9 +28,9 @@ const char *fsmonitor_ipc__get_path(struct repository *r)
 		return ipc_path;
 	}
 
-	SHA1_Init(&sha1ctx);
-	SHA1_Update(&sha1ctx, r->worktree, strlen(r->worktree));
-	SHA1_Final(hash, &sha1ctx);
+	git_SHA1_Init(&sha1ctx);
+	git_SHA1_Update(&sha1ctx, r->worktree, strlen(r->worktree));
+	git_SHA1_Final(hash, &sha1ctx);
 
 	repo_config_get_string(r, "fsmonitor.socketdir", &sock_dir);
 
-- 
2.38.0.1093.gcd4a685f0b1

