libceph: remove now unused ceph_*{en,de}crypt*() functions

commit 2b1e1a7cd0a615d57455567a549f9965023321b5 upstream.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Sage Weil <sage@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/net/ceph/crypto.c b/net/ceph/crypto.c
index 32099c5c4c75626b8c02977ce4d0eb1899a5d0cd..38936e1fd644cdd089b36370eea30c2223538f51 100644 (file)
--- a/net/ceph/crypto.c
+++ b/net/ceph/crypto.c
@@ -157,375 +157,6 @@ static void teardown_sgtable(struct sg_table *sgt)
                sg_free_table(sgt);
 }
 
-static int ceph_aes_encrypt(const void *key, int key_len,
-                           void *dst, size_t *dst_len,
-                           const void *src, size_t src_len)
-{
-       struct scatterlist sg_in[2], prealloc_sg;
-       struct sg_table sg_out;
-       struct crypto_skcipher *tfm = ceph_crypto_alloc_cipher();
-       SKCIPHER_REQUEST_ON_STACK(req, tfm);
-       int ret;
-       char iv[AES_BLOCK_SIZE];
-       size_t zero_padding = (0x10 - (src_len & 0x0f));
-       char pad[16];
-
-       if (IS_ERR(tfm))
-               return PTR_ERR(tfm);
-
-       memset(pad, zero_padding, zero_padding);
-
-       *dst_len = src_len + zero_padding;
-
-       sg_init_table(sg_in, 2);
-       sg_set_buf(&sg_in[0], src, src_len);
-       sg_set_buf(&sg_in[1], pad, zero_padding);
-       ret = setup_sgtable(&sg_out, &prealloc_sg, dst, *dst_len);
-       if (ret)
-               goto out_tfm;
-
-       crypto_skcipher_setkey((void *)tfm, key, key_len);
-       memcpy(iv, aes_iv, AES_BLOCK_SIZE);
-
-       skcipher_request_set_tfm(req, tfm);
-       skcipher_request_set_callback(req, 0, NULL, NULL);
-       skcipher_request_set_crypt(req, sg_in, sg_out.sgl,
-                                  src_len + zero_padding, iv);
-
-       /*
-       print_hex_dump(KERN_ERR, "enc key: ", DUMP_PREFIX_NONE, 16, 1,
-                      key, key_len, 1);
-       print_hex_dump(KERN_ERR, "enc src: ", DUMP_PREFIX_NONE, 16, 1,
-                       src, src_len, 1);
-       print_hex_dump(KERN_ERR, "enc pad: ", DUMP_PREFIX_NONE, 16, 1,
-                       pad, zero_padding, 1);
-       */
-       ret = crypto_skcipher_encrypt(req);
-       skcipher_request_zero(req);
-       if (ret < 0) {
-               pr_err("ceph_aes_crypt failed %d\n", ret);
-               goto out_sg;
-       }
-       /*
-       print_hex_dump(KERN_ERR, "enc out: ", DUMP_PREFIX_NONE, 16, 1,
-                      dst, *dst_len, 1);
-       */
-
-out_sg:
-       teardown_sgtable(&sg_out);
-out_tfm:
-       crypto_free_skcipher(tfm);
-       return ret;
-}
-
-static int ceph_aes_encrypt2(const void *key, int key_len, void *dst,
-                            size_t *dst_len,
-                            const void *src1, size_t src1_len,
-                            const void *src2, size_t src2_len)
-{
-       struct scatterlist sg_in[3], prealloc_sg;
-       struct sg_table sg_out;
-       struct crypto_skcipher *tfm = ceph_crypto_alloc_cipher();
-       SKCIPHER_REQUEST_ON_STACK(req, tfm);
-       int ret;
-       char iv[AES_BLOCK_SIZE];
-       size_t zero_padding = (0x10 - ((src1_len + src2_len) & 0x0f));
-       char pad[16];
-
-       if (IS_ERR(tfm))
-               return PTR_ERR(tfm);
-
-       memset(pad, zero_padding, zero_padding);
-
-       *dst_len = src1_len + src2_len + zero_padding;
-
-       sg_init_table(sg_in, 3);
-       sg_set_buf(&sg_in[0], src1, src1_len);
-       sg_set_buf(&sg_in[1], src2, src2_len);
-       sg_set_buf(&sg_in[2], pad, zero_padding);
-       ret = setup_sgtable(&sg_out, &prealloc_sg, dst, *dst_len);
-       if (ret)
-               goto out_tfm;
-
-       crypto_skcipher_setkey((void *)tfm, key, key_len);
-       memcpy(iv, aes_iv, AES_BLOCK_SIZE);
-
-       skcipher_request_set_tfm(req, tfm);
-       skcipher_request_set_callback(req, 0, NULL, NULL);
-       skcipher_request_set_crypt(req, sg_in, sg_out.sgl,
-                                  src1_len + src2_len + zero_padding, iv);
-
-       /*
-       print_hex_dump(KERN_ERR, "enc  key: ", DUMP_PREFIX_NONE, 16, 1,
-                      key, key_len, 1);
-       print_hex_dump(KERN_ERR, "enc src1: ", DUMP_PREFIX_NONE, 16, 1,
-                       src1, src1_len, 1);
-       print_hex_dump(KERN_ERR, "enc src2: ", DUMP_PREFIX_NONE, 16, 1,
-                       src2, src2_len, 1);
-       print_hex_dump(KERN_ERR, "enc  pad: ", DUMP_PREFIX_NONE, 16, 1,
-                       pad, zero_padding, 1);
-       */
-       ret = crypto_skcipher_encrypt(req);
-       skcipher_request_zero(req);
-       if (ret < 0) {
-               pr_err("ceph_aes_crypt2 failed %d\n", ret);
-               goto out_sg;
-       }
-       /*
-       print_hex_dump(KERN_ERR, "enc  out: ", DUMP_PREFIX_NONE, 16, 1,
-                      dst, *dst_len, 1);
-       */
-
-out_sg:
-       teardown_sgtable(&sg_out);
-out_tfm:
-       crypto_free_skcipher(tfm);
-       return ret;
-}
-
-static int ceph_aes_decrypt(const void *key, int key_len,
-                           void *dst, size_t *dst_len,
-                           const void *src, size_t src_len)
-{
-       struct sg_table sg_in;
-       struct scatterlist sg_out[2], prealloc_sg;
-       struct crypto_skcipher *tfm = ceph_crypto_alloc_cipher();
-       SKCIPHER_REQUEST_ON_STACK(req, tfm);
-       char pad[16];
-       char iv[AES_BLOCK_SIZE];
-       int ret;
-       int last_byte;
-
-       if (IS_ERR(tfm))
-               return PTR_ERR(tfm);
-
-       sg_init_table(sg_out, 2);
-       sg_set_buf(&sg_out[0], dst, *dst_len);
-       sg_set_buf(&sg_out[1], pad, sizeof(pad));
-       ret = setup_sgtable(&sg_in, &prealloc_sg, src, src_len);
-       if (ret)
-               goto out_tfm;
-
-       crypto_skcipher_setkey((void *)tfm, key, key_len);
-       memcpy(iv, aes_iv, AES_BLOCK_SIZE);
-
-       skcipher_request_set_tfm(req, tfm);
-       skcipher_request_set_callback(req, 0, NULL, NULL);
-       skcipher_request_set_crypt(req, sg_in.sgl, sg_out,
-                                  src_len, iv);
-
-       /*
-       print_hex_dump(KERN_ERR, "dec key: ", DUMP_PREFIX_NONE, 16, 1,
-                      key, key_len, 1);
-       print_hex_dump(KERN_ERR, "dec  in: ", DUMP_PREFIX_NONE, 16, 1,
-                      src, src_len, 1);
-       */
-       ret = crypto_skcipher_decrypt(req);
-       skcipher_request_zero(req);
-       if (ret < 0) {
-               pr_err("ceph_aes_decrypt failed %d\n", ret);
-               goto out_sg;
-       }
-
-       if (src_len <= *dst_len)
-               last_byte = ((char *)dst)[src_len - 1];
-       else
-               last_byte = pad[src_len - *dst_len - 1];
-       if (last_byte <= 16 && src_len >= last_byte) {
-               *dst_len = src_len - last_byte;
-       } else {
-               pr_err("ceph_aes_decrypt got bad padding %d on src len %d\n",
-                      last_byte, (int)src_len);
-               return -EPERM;  /* bad padding */
-       }
-       /*
-       print_hex_dump(KERN_ERR, "dec out: ", DUMP_PREFIX_NONE, 16, 1,
-                      dst, *dst_len, 1);
-       */
-
-out_sg:
-       teardown_sgtable(&sg_in);
-out_tfm:
-       crypto_free_skcipher(tfm);
-       return ret;
-}
-
-static int ceph_aes_decrypt2(const void *key, int key_len,
-                            void *dst1, size_t *dst1_len,
-                            void *dst2, size_t *dst2_len,
-                            const void *src, size_t src_len)
-{
-       struct sg_table sg_in;
-       struct scatterlist sg_out[3], prealloc_sg;
-       struct crypto_skcipher *tfm = ceph_crypto_alloc_cipher();
-       SKCIPHER_REQUEST_ON_STACK(req, tfm);
-       char pad[16];
-       char iv[AES_BLOCK_SIZE];
-       int ret;
-       int last_byte;
-
-       if (IS_ERR(tfm))
-               return PTR_ERR(tfm);
-
-       sg_init_table(sg_out, 3);
-       sg_set_buf(&sg_out[0], dst1, *dst1_len);
-       sg_set_buf(&sg_out[1], dst2, *dst2_len);
-       sg_set_buf(&sg_out[2], pad, sizeof(pad));
-       ret = setup_sgtable(&sg_in, &prealloc_sg, src, src_len);
-       if (ret)
-               goto out_tfm;
-
-       crypto_skcipher_setkey((void *)tfm, key, key_len);
-       memcpy(iv, aes_iv, AES_BLOCK_SIZE);
-
-       skcipher_request_set_tfm(req, tfm);
-       skcipher_request_set_callback(req, 0, NULL, NULL);
-       skcipher_request_set_crypt(req, sg_in.sgl, sg_out,
-                                  src_len, iv);
-
-       /*
-       print_hex_dump(KERN_ERR, "dec  key: ", DUMP_PREFIX_NONE, 16, 1,
-                      key, key_len, 1);
-       print_hex_dump(KERN_ERR, "dec   in: ", DUMP_PREFIX_NONE, 16, 1,
-                      src, src_len, 1);
-       */
-       ret = crypto_skcipher_decrypt(req);
-       skcipher_request_zero(req);
-       if (ret < 0) {
-               pr_err("ceph_aes_decrypt failed %d\n", ret);
-               goto out_sg;
-       }
-
-       if (src_len <= *dst1_len)
-               last_byte = ((char *)dst1)[src_len - 1];
-       else if (src_len <= *dst1_len + *dst2_len)
-               last_byte = ((char *)dst2)[src_len - *dst1_len - 1];
-       else
-               last_byte = pad[src_len - *dst1_len - *dst2_len - 1];
-       if (last_byte <= 16 && src_len >= last_byte) {
-               src_len -= last_byte;
-       } else {
-               pr_err("ceph_aes_decrypt got bad padding %d on src len %d\n",
-                      last_byte, (int)src_len);
-               return -EPERM;  /* bad padding */
-       }
-
-       if (src_len < *dst1_len) {
-               *dst1_len = src_len;
-               *dst2_len = 0;
-       } else {
-               *dst2_len = src_len - *dst1_len;
-       }
-       /*
-       print_hex_dump(KERN_ERR, "dec  out1: ", DUMP_PREFIX_NONE, 16, 1,
-                      dst1, *dst1_len, 1);
-       print_hex_dump(KERN_ERR, "dec  out2: ", DUMP_PREFIX_NONE, 16, 1,
-                      dst2, *dst2_len, 1);
-       */
-
-out_sg:
-       teardown_sgtable(&sg_in);
-out_tfm:
-       crypto_free_skcipher(tfm);
-       return ret;
-}
-
-
-int ceph_decrypt(struct ceph_crypto_key *secret, void *dst, size_t *dst_len,
-                const void *src, size_t src_len)
-{
-       switch (secret->type) {
-       case CEPH_CRYPTO_NONE:
-               if (*dst_len < src_len)
-                       return -ERANGE;
-               memcpy(dst, src, src_len);
-               *dst_len = src_len;
-               return 0;
-
-       case CEPH_CRYPTO_AES:
-               return ceph_aes_decrypt(secret->key, secret->len, dst,
-                                       dst_len, src, src_len);
-
-       default:
-               return -EINVAL;
-       }
-}
-
-int ceph_decrypt2(struct ceph_crypto_key *secret,
-                       void *dst1, size_t *dst1_len,
-                       void *dst2, size_t *dst2_len,
-                       const void *src, size_t src_len)
-{
-       size_t t;
-
-       switch (secret->type) {
-       case CEPH_CRYPTO_NONE:
-               if (*dst1_len + *dst2_len < src_len)
-                       return -ERANGE;
-               t = min(*dst1_len, src_len);
-               memcpy(dst1, src, t);
-               *dst1_len = t;
-               src += t;
-               src_len -= t;
-               if (src_len) {
-                       t = min(*dst2_len, src_len);
-                       memcpy(dst2, src, t);
-                       *dst2_len = t;
-               }
-               return 0;
-
-       case CEPH_CRYPTO_AES:
-               return ceph_aes_decrypt2(secret->key, secret->len,
-                                        dst1, dst1_len, dst2, dst2_len,
-                                        src, src_len);
-
-       default:
-               return -EINVAL;
-       }
-}
-
-int ceph_encrypt(struct ceph_crypto_key *secret, void *dst, size_t *dst_len,
-                const void *src, size_t src_len)
-{
-       switch (secret->type) {
-       case CEPH_CRYPTO_NONE:
-               if (*dst_len < src_len)
-                       return -ERANGE;
-               memcpy(dst, src, src_len);
-               *dst_len = src_len;
-               return 0;
-
-       case CEPH_CRYPTO_AES:
-               return ceph_aes_encrypt(secret->key, secret->len, dst,
-                                       dst_len, src, src_len);
-
-       default:
-               return -EINVAL;
-       }
-}
-
-int ceph_encrypt2(struct ceph_crypto_key *secret, void *dst, size_t *dst_len,
-                 const void *src1, size_t src1_len,
-                 const void *src2, size_t src2_len)
-{
-       switch (secret->type) {
-       case CEPH_CRYPTO_NONE:
-               if (*dst_len < src1_len + src2_len)
-                       return -ERANGE;
-               memcpy(dst, src1, src1_len);
-               memcpy(dst + src1_len, src2, src2_len);
-               *dst_len = src1_len + src2_len;
-               return 0;
-
-       case CEPH_CRYPTO_AES:
-               return ceph_aes_encrypt2(secret->key, secret->len, dst, dst_len,
-                                        src1, src1_len, src2, src2_len);
-
-       default:
-               return -EINVAL;
-       }
-}
-
 static int ceph_aes_crypt(const struct ceph_crypto_key *key, bool encrypt,
                          void *buf, int buf_len, int in_len, int *pout_len)
 {

diff --git a/net/ceph/crypto.h b/net/ceph/crypto.h
index 73da34e8c62e1225426921a06be5e2f9839728dd..c33bcafd3829e69b2c7b539db31fb24d3e93773f 100644 (file)
--- a/net/ceph/crypto.h
+++ b/net/ceph/crypto.h
@@ -29,20 +29,6 @@ int ceph_crypto_key_decode(struct ceph_crypto_key *key, void **p, void *end);
 int ceph_crypto_key_unarmor(struct ceph_crypto_key *key, const char *in);
 
 /* crypto.c */
-int ceph_decrypt(struct ceph_crypto_key *secret,
-                void *dst, size_t *dst_len,
-                const void *src, size_t src_len);
-int ceph_encrypt(struct ceph_crypto_key *secret,
-                void *dst, size_t *dst_len,
-                const void *src, size_t src_len);
-int ceph_decrypt2(struct ceph_crypto_key *secret,
-                 void *dst1, size_t *dst1_len,
-                 void *dst2, size_t *dst2_len,
-                 const void *src, size_t src_len);
-int ceph_encrypt2(struct ceph_crypto_key *secret,
-                 void *dst, size_t *dst_len,
-                 const void *src1, size_t src1_len,
-                 const void *src2, size_t src2_len);
 int ceph_crypt(const struct ceph_crypto_key *key, bool encrypt,
               void *buf, int buf_len, int in_len, int *pout_len);
 int ceph_crypto_init(void);