diff options
| author | Jan-Simon Möller <dl9pf@gmx.de> | 2012-07-02 13:47:40 +0200 |
|---|---|---|
| committer | Behan Webster <behanw@converseincode.com> | 2014-03-31 00:07:18 -0700 |
| commit | 81a66af61d8f2f841b2ba4905481ce42c8ad1991 (patch) | |
| tree | d093b84b4e5dcd8b87633a4cf47c871ce717df77 /crypto | |
| parent | 1dcd6fd701155c289e0a7c03e5bdc247126e7d61 (diff) | |
crypto: LLVMLinux: Remove VLAIS usage from crypto/hmac.c
The use of variable length arrays in structs (VLAIS) in the Linux Kernel code
precludes the use of compilers which don't implement VLAIS (for instance the
Clang compiler). This patch instead allocates the appropriate amount of memory
using an char array.
Signed-off-by: Jan-Simon Möller <dl9pf@gmx.de>
Signed-off-by: Behan Webster <behanw@converseincode.com>
Cc: pageexec@freemail.hu
Diffstat (limited to 'crypto')
| -rw-r--r-- | crypto/hmac.c | 27 |
1 files changed, 13 insertions, 14 deletions
diff --git a/crypto/hmac.c b/crypto/hmac.c index 8d9544cf816..10612555c44 100644 --- a/crypto/hmac.c +++ b/crypto/hmac.c @@ -52,20 +52,19 @@ 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; + char desc[sizeof(struct shash_desc) + crypto_shash_descsize(hash) + + CRYPTO_MINALIGN] CRYPTO_MINALIGN_ATTR; + struct shash_desc *shash = (struct shash_desc *)desc; 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 +80,12 @@ 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) |