From ff753308d2f70f210ba468492cd9a01274d9d7ce Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Tue, 17 Feb 2009 20:18:34 +0800 Subject: crypto: api - crypto_alg_mod_lookup either tested or untested As it stands crypto_alg_mod_lookup will search either tested or untested algorithms, but never both at the same time. However, we need exactly that when constructing givcipher and aead so this patch adds support for that by setting the tested bit in type but clearing it in mask. This combination is currently unused. Signed-off-by: Herbert Xu --- crypto/api.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'crypto/api.c') diff --git a/crypto/api.c b/crypto/api.c index efe77df6863f..56b6e0e66311 100644 --- a/crypto/api.c +++ b/crypto/api.c @@ -244,7 +244,7 @@ struct crypto_alg *crypto_alg_mod_lookup(const char *name, u32 type, u32 mask) struct crypto_alg *larval; int ok; - if (!(mask & CRYPTO_ALG_TESTED)) { + if (!((type | mask) & CRYPTO_ALG_TESTED)) { type |= CRYPTO_ALG_TESTED; mask |= CRYPTO_ALG_TESTED; } -- cgit v1.2.2 From 3f683d6175748ef9daf4698d9ef5a488dd037063 Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Wed, 18 Feb 2009 16:56:59 +0800 Subject: crypto: api - Fix crypto_alloc_tfm/create_create_tfm return convention This is based on a report and patch by Geert Uytterhoeven. The functions crypto_alloc_tfm and create_create_tfm return a pointer that needs to be adjusted by the caller when successful and otherwise an error value. This means that the caller has to check for the error and only perform the adjustment if the pointer returned is valid. Since all callers want to make the adjustment and we know how to adjust it ourselves, it's much easier to just return adjusted pointer directly. The only caveat is that we have to return a void * instead of struct crypto_tfm *. However, this isn't that bad because both of these functions are for internal use only (by types code like shash.c, not even algorithms code). This patch also moves crypto_alloc_tfm into crypto/internal.h (crypto_create_tfm is already there) to reflect this. Signed-off-by: Herbert Xu --- crypto/api.c | 15 +++++++-------- 1 file changed, 7 insertions(+), 8 deletions(-) (limited to 'crypto/api.c') diff --git a/crypto/api.c b/crypto/api.c index 56b6e0e66311..22385cac90bb 100644 --- a/crypto/api.c +++ b/crypto/api.c @@ -453,8 +453,8 @@ err: } EXPORT_SYMBOL_GPL(crypto_alloc_base); -struct crypto_tfm *crypto_create_tfm(struct crypto_alg *alg, - const struct crypto_type *frontend) +void *crypto_create_tfm(struct crypto_alg *alg, + const struct crypto_type *frontend) { char *mem; struct crypto_tfm *tfm = NULL; @@ -488,9 +488,9 @@ out_free_tfm: crypto_shoot_alg(alg); kfree(mem); out_err: - tfm = ERR_PTR(err); + mem = ERR_PTR(err); out: - return tfm; + return mem; } EXPORT_SYMBOL_GPL(crypto_create_tfm); @@ -514,12 +514,11 @@ EXPORT_SYMBOL_GPL(crypto_create_tfm); * * In case of error the return value is an error pointer. */ -struct crypto_tfm *crypto_alloc_tfm(const char *alg_name, - const struct crypto_type *frontend, - u32 type, u32 mask) +void *crypto_alloc_tfm(const char *alg_name, + const struct crypto_type *frontend, u32 type, u32 mask) { struct crypto_alg *(*lookup)(const char *name, u32 type, u32 mask); - struct crypto_tfm *tfm; + void *tfm; int err; type &= frontend->maskclear; -- cgit v1.2.2