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| author | Jan-Simon Möller <dl9pf@gmx.de> | 2012-07-02 13:47:40 +0200 |
|---|---|---|
| committer | Behan Webster <behanw@converseincode.com> | 2014-10-14 10:51:23 +0200 |
| commit | ffb32e973eb5105ec55e0bbf2e77a1ea4a7a123a (patch) | |
| tree | 7fb370b40fe18ee004d49ce999b3b031aad49f9b /crypto/hmac.c | |
| parent | b610626523cf5c780bf7d9746580c323e90580e6 (diff) | |
| download | lwn-ffb32e973eb5105ec55e0bbf2e77a1ea4a7a123a.tar.gz lwn-ffb32e973eb5105ec55e0bbf2e77a1ea4a7a123a.zip | |
crypto: LLVMLinux: Remove VLAIS usage from crypto/hmac.c
Replaced the use of a Variable Length Array In Struct (VLAIS) with a C99
compliant equivalent. This patch allocates the appropriate amount of memory
using a char array using the SHASH_DESC_ON_STACK macro.
The new code can be compiled with both gcc and clang.
Signed-off-by: Jan-Simon Möller <dl9pf@gmx.de>
Signed-off-by: Behan Webster <behanw@converseincode.com>
Reviewed-by: Mark Charlebois <charlebm@gmail.com>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Cc: pageexec@freemail.hu
Diffstat (limited to 'crypto/hmac.c')
| -rw-r--r-- | crypto/hmac.c | 25 |
1 files changed, 11 insertions, 14 deletions
diff --git a/crypto/hmac.c b/crypto/hmac.c index 8d9544cf8169..e392219ddc61 100644 --- a/crypto/hmac.c +++ b/crypto/hmac.c @@ -52,20 +52,17 @@ static int hmac_setkey(struct crypto_shash *parent, struct hmac_ctx *ctx = align_ptr(opad + ss, crypto_tfm_ctx_alignment()); struct crypto_shash *hash = ctx->hash; - struct { - struct shash_desc shash; - char ctx[crypto_shash_descsize(hash)]; - } desc; + SHASH_DESC_ON_STACK(shash, hash); unsigned int i; - desc.shash.tfm = hash; - desc.shash.flags = crypto_shash_get_flags(parent) & - CRYPTO_TFM_REQ_MAY_SLEEP; + shash->tfm = hash; + shash->flags = crypto_shash_get_flags(parent) + & CRYPTO_TFM_REQ_MAY_SLEEP; if (keylen > bs) { int err; - err = crypto_shash_digest(&desc.shash, inkey, keylen, ipad); + err = crypto_shash_digest(shash, inkey, keylen, ipad); if (err) return err; @@ -81,12 +78,12 @@ static int hmac_setkey(struct crypto_shash *parent, opad[i] ^= 0x5c; } - return crypto_shash_init(&desc.shash) ?: - crypto_shash_update(&desc.shash, ipad, bs) ?: - crypto_shash_export(&desc.shash, ipad) ?: - crypto_shash_init(&desc.shash) ?: - crypto_shash_update(&desc.shash, opad, bs) ?: - crypto_shash_export(&desc.shash, opad); + return crypto_shash_init(shash) ?: + crypto_shash_update(shash, ipad, bs) ?: + crypto_shash_export(shash, ipad) ?: + crypto_shash_init(shash) ?: + crypto_shash_update(shash, opad, bs) ?: + crypto_shash_export(shash, opad); } static int hmac_export(struct shash_desc *pdesc, void *out) |