From 3bc72fde3f35b988c902abf5a0bc027f2e54d0c1 Mon Sep 17 00:00:00 2001 From: Atousa Pahlevan Duprat Date: Wed, 4 Nov 2015 22:38:41 -0800 Subject: sha1: provide another level of indirection for the SHA-1 functions The git source uses git_SHA1_Update() and friends to call into the code that computes the hashes. Traditionally, we used to map these directly to underlying implementation of the SHA-1 hash (e.g. SHA1_Update() from OpenSSL or blk_SHA1_Update() from block-sha1/). This arrangement however makes it hard to tweak behaviour of the underlying implementation without fully replacing. If we want to introduce a tweaked_SHA1_Update() wrapper to implement the "Update" in a slightly different way, for example, the implementation of the wrapper still would want to call into the underlying implementation, but tweaked_SHA1_Update() cannot call git_SHA1_Update() to get to the underlying implementation (often but not always SHA1_Update()). Add another level of indirection that maps platform_SHA1_Update() and friends to their underlying implementations, and by default make git_SHA1_Update() and friends map to platform_SHA1_* functions. Doing it this way will later allow us to map git_SHA1_Update() to tweaked_SHA1_Update(), and the latter can use platform_SHA1_Update() in its implementation. Signed-off-by: Atousa Pahlevan Duprat Signed-off-by: Junio C Hamano --- ppc/sha1.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'ppc') diff --git a/ppc/sha1.h b/ppc/sha1.h index c405f734c2..9b24b32615 100644 --- a/ppc/sha1.h +++ b/ppc/sha1.h @@ -19,7 +19,7 @@ int ppc_SHA1_Init(ppc_SHA_CTX *c); int ppc_SHA1_Update(ppc_SHA_CTX *c, const void *p, unsigned long n); int ppc_SHA1_Final(unsigned char *hash, ppc_SHA_CTX *c); -#define git_SHA_CTX ppc_SHA_CTX -#define git_SHA1_Init ppc_SHA1_Init -#define git_SHA1_Update ppc_SHA1_Update -#define git_SHA1_Final ppc_SHA1_Final +#define platform_SHA_CTX ppc_SHA_CTX +#define platform_SHA1_Init ppc_SHA1_Init +#define platform_SHA1_Update ppc_SHA1_Update +#define platform_SHA1_Final ppc_SHA1_Final -- cgit v1.2.3