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[1/2] crypto: scomp - allow registration of multiple scomps

Message ID 20170419141142.3678-1-giovanni.cabiddu@intel.com (mailing list archive)
State Changes Requested
Delegated to: Herbert Xu
Headers show

Commit Message

Cabiddu, Giovanni April 19, 2017, 2:11 p.m. UTC 
Add crypto_register_scomps and crypto_unregister_scomps to allow
the registration of multiple implementations with one call.

Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
---
 crypto/scompress.c                  | 29 +++++++++++++++++++++++++++++
 include/crypto/internal/scompress.h |  3 +++
 2 files changed, 32 insertions(+)
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Patch

diff --git a/crypto/scompress.c b/crypto/scompress.c
index 6b048b3..ae1d3cf 100644
--- a/crypto/scompress.c
+++ b/crypto/scompress.c
@@ -353,5 +353,34 @@  int crypto_unregister_scomp(struct scomp_alg *alg)
 }
 EXPORT_SYMBOL_GPL(crypto_unregister_scomp);
 
+int crypto_register_scomps(struct scomp_alg *algs, int count)
+{
+	int i, ret;
+
+	for (i = 0; i < count; i++) {
+		ret = crypto_register_scomp(&algs[i]);
+		if (ret)
+			goto err;
+	}
+
+	return 0;
+
+err:
+	for (--i; i >= 0; --i)
+		crypto_unregister_scomp(&algs[i]);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(crypto_register_scomps);
+
+void crypto_unregister_scomps(struct scomp_alg *algs, int count)
+{
+	int i;
+
+	for (i = count - 1; i >= 0; --i)
+		crypto_unregister_scomp(&algs[i]);
+}
+EXPORT_SYMBOL_GPL(crypto_unregister_scomps);
+
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("Synchronous compression type");
diff --git a/include/crypto/internal/scompress.h b/include/crypto/internal/scompress.h
index 3fda3c5..ccad9b2 100644
--- a/include/crypto/internal/scompress.h
+++ b/include/crypto/internal/scompress.h
@@ -133,4 +133,7 @@  int crypto_register_scomp(struct scomp_alg *alg);
  */
 int crypto_unregister_scomp(struct scomp_alg *alg);
 
+int crypto_register_scomps(struct scomp_alg *algs, int count);
+void crypto_unregister_scomps(struct scomp_alg *algs, int count);
+
 #endif