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path: root/fs/ecryptfs/crypto.c
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Diffstat (limited to 'fs/ecryptfs/crypto.c')
-rw-r--r--fs/ecryptfs/crypto.c44
1 files changed, 6 insertions, 38 deletions
diff --git a/fs/ecryptfs/crypto.c b/fs/ecryptfs/crypto.c
index e5e29f8c920b..846ca150d52e 100644
--- a/fs/ecryptfs/crypto.c
+++ b/fs/ecryptfs/crypto.c
@@ -36,27 +36,13 @@
#include <linux/scatterlist.h>
#include <linux/slab.h>
#include <asm/unaligned.h>
+#include <linux/kernel.h>
#include "ecryptfs_kernel.h"
#define DECRYPT 0
#define ENCRYPT 1
/**
- * ecryptfs_to_hex
- * @dst: Buffer to take hex character representation of contents of
- * src; must be at least of size (src_size * 2)
- * @src: Buffer to be converted to a hex string representation
- * @src_size: number of bytes to convert
- */
-void ecryptfs_to_hex(char *dst, char *src, size_t src_size)
-{
- int x;
-
- for (x = 0; x < src_size; x++)
- sprintf(&dst[x * 2], "%.2x", (unsigned char)src[x]);
-}
-
-/**
* ecryptfs_from_hex
* @dst: Buffer to take the bytes from src hex; must be at least of
* size (src_size / 2)
@@ -899,8 +885,7 @@ static int ecryptfs_process_flags(struct ecryptfs_crypt_stat *crypt_stat,
u32 flags;
flags = get_unaligned_be32(page_virt);
- for (i = 0; i < ((sizeof(ecryptfs_flag_map)
- / sizeof(struct ecryptfs_flag_map_elem))); i++)
+ for (i = 0; i < ARRAY_SIZE(ecryptfs_flag_map); i++)
if (flags & ecryptfs_flag_map[i].file_flag) {
crypt_stat->flags |= ecryptfs_flag_map[i].local_flag;
} else
@@ -937,8 +922,7 @@ void ecryptfs_write_crypt_stat_flags(char *page_virt,
u32 flags = 0;
int i;
- for (i = 0; i < ((sizeof(ecryptfs_flag_map)
- / sizeof(struct ecryptfs_flag_map_elem))); i++)
+ for (i = 0; i < ARRAY_SIZE(ecryptfs_flag_map); i++)
if (crypt_stat->flags & ecryptfs_flag_map[i].local_flag)
flags |= ecryptfs_flag_map[i].file_flag;
/* Version is in top 8 bits of the 32-bit flag vector */
@@ -1434,8 +1418,6 @@ int ecryptfs_read_metadata(struct dentry *ecryptfs_dentry)
page_virt = kmem_cache_alloc(ecryptfs_header_cache, GFP_USER);
if (!page_virt) {
rc = -ENOMEM;
- printk(KERN_ERR "%s: Unable to allocate page_virt\n",
- __func__);
goto out;
}
rc = ecryptfs_read_lower(page_virt, 0, crypt_stat->extent_size,
@@ -1522,9 +1504,6 @@ ecryptfs_encrypt_filename(struct ecryptfs_filename *filename,
filename->encrypted_filename =
kmalloc(filename->encrypted_filename_size, GFP_KERNEL);
if (!filename->encrypted_filename) {
- printk(KERN_ERR "%s: Out of memory whilst attempting "
- "to kmalloc [%zd] bytes\n", __func__,
- filename->encrypted_filename_size);
rc = -ENOMEM;
goto out;
}
@@ -1669,12 +1648,10 @@ ecryptfs_add_new_key_tfm(struct ecryptfs_key_tfm **key_tfm, char *cipher_name,
BUG_ON(!mutex_is_locked(&key_tfm_list_mutex));
tmp_tfm = kmem_cache_alloc(ecryptfs_key_tfm_cache, GFP_KERNEL);
- if (key_tfm != NULL)
+ if (key_tfm)
(*key_tfm) = tmp_tfm;
if (!tmp_tfm) {
rc = -ENOMEM;
- printk(KERN_ERR "Error attempting to allocate from "
- "ecryptfs_key_tfm_cache\n");
goto out;
}
mutex_init(&tmp_tfm->key_tfm_mutex);
@@ -1690,7 +1667,7 @@ ecryptfs_add_new_key_tfm(struct ecryptfs_key_tfm **key_tfm, char *cipher_name,
"cipher with name = [%s]; rc = [%d]\n",
tmp_tfm->cipher_name, rc);
kmem_cache_free(ecryptfs_key_tfm_cache, tmp_tfm);
- if (key_tfm != NULL)
+ if (key_tfm)
(*key_tfm) = NULL;
goto out;
}
@@ -1881,7 +1858,7 @@ ecryptfs_decode_from_filename(unsigned char *dst, size_t *dst_size,
size_t src_byte_offset = 0;
size_t dst_byte_offset = 0;
- if (dst == NULL) {
+ if (!dst) {
(*dst_size) = ecryptfs_max_decoded_size(src_size);
goto out;
}
@@ -1949,9 +1926,6 @@ int ecryptfs_encrypt_and_encode_filename(
filename = kzalloc(sizeof(*filename), GFP_KERNEL);
if (!filename) {
- printk(KERN_ERR "%s: Out of memory whilst attempting "
- "to kzalloc [%zd] bytes\n", __func__,
- sizeof(*filename));
rc = -ENOMEM;
goto out;
}
@@ -1980,9 +1954,6 @@ int ecryptfs_encrypt_and_encode_filename(
+ encoded_name_no_prefix_size);
(*encoded_name) = kmalloc((*encoded_name_size) + 1, GFP_KERNEL);
if (!(*encoded_name)) {
- printk(KERN_ERR "%s: Out of memory whilst attempting "
- "to kzalloc [%zd] bytes\n", __func__,
- (*encoded_name_size));
rc = -ENOMEM;
kfree(filename->encrypted_filename);
kfree(filename);
@@ -2064,9 +2035,6 @@ int ecryptfs_decode_and_decrypt_filename(char **plaintext_name,
name, name_size);
decoded_name = kmalloc(decoded_name_size, GFP_KERNEL);
if (!decoded_name) {
- printk(KERN_ERR "%s: Out of memory whilst attempting "
- "to kmalloc [%zd] bytes\n", __func__,
- decoded_name_size);
rc = -ENOMEM;
goto out;
}