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| author |   David Howells <dhowells@redhat.com> | 2014-09-16 17:29:03 +0100 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2014-09-16 17:29:03 +0100 |
| commit | 3cd0920cde6a726b9965b60184f9d5a54358304d (patch) | |
| tree | 94f4fc4be81e0d6d4dd21962ffa206a3815d99ca /crypto | |
| parent | KEYS: Reinstate EPERM for a key type name beginning with a '.' (diff) | |
| download | linux-dev-3cd0920cde6a726b9965b60184f9d5a54358304d.tar.xz linux-dev-3cd0920cde6a726b9965b60184f9d5a54358304d.zip | |
PKCS#7: Provide a single place to do signed info block freeing
The code to free a signed info block is repeated several times, so move the
code to do it into a function of its own. This gives us a place to add clean
ups for stuff that gets added to pkcs7_signed_info.
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Diffstat (limited to 'crypto')
| -rw-r--r-- | crypto/asymmetric_keys/pkcs7_parser.c | 24 |
1 files changed, 15 insertions, 9 deletions
diff --git a/crypto/asymmetric_keys/pkcs7_parser.c b/crypto/asymmetric_keys/pkcs7_parser.c index 42e56aa7d277..4c4ea35c338b 100644 --- a/crypto/asymmetric_keys/pkcs7_parser.c +++ b/crypto/asymmetric_keys/pkcs7_parser.c @@ -31,6 +31,18 @@ struct pkcs7_parse_context { unsigned sinfo_index; }; +/* + * Free a signed information block. + */ +static void pkcs7_free_signed_info(struct pkcs7_signed_info *sinfo) +{ + if (sinfo) { + mpi_free(sinfo->sig.mpi[0]); + kfree(sinfo->sig.digest); + kfree(sinfo); + } +} + /** * pkcs7_free_message - Free a PKCS#7 message * @pkcs7: The PKCS#7 message to free @@ -54,9 +66,7 @@ void pkcs7_free_message(struct pkcs7_message *pkcs7) while (pkcs7->signed_infos) { sinfo = pkcs7->signed_infos; pkcs7->signed_infos = sinfo->next; - mpi_free(sinfo->sig.mpi[0]); - kfree(sinfo->sig.digest); - kfree(sinfo); + pkcs7_free_signed_info(sinfo); } kfree(pkcs7); } @@ -100,16 +110,12 @@ struct pkcs7_message *pkcs7_parse_message(const void *data, size_t datalen) ctx->certs = cert->next; x509_free_certificate(cert); } - mpi_free(ctx->sinfo->sig.mpi[0]); - kfree(ctx->sinfo->sig.digest); - kfree(ctx->sinfo); + pkcs7_free_signed_info(ctx->sinfo); kfree(ctx); return msg; error_decode: - mpi_free(ctx->sinfo->sig.mpi[0]); - kfree(ctx->sinfo->sig.digest); - kfree(ctx->sinfo); + pkcs7_free_signed_info(ctx->sinfo); error_no_sinfo: kfree(ctx); error_no_ctx: |