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ecryptfs: use kasprintf in ecryptfs_crypto_api_algify_cipher_name

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Use kasprintf() to simplify ecryptfs_crypto_api_algify_cipher_name().

Use const char * for the read-only cipher name and chaining modifier
while at it.

Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Signed-off-by: Tyler Hicks <code@tyhicks.com>
This commit is contained in:
Thorsten Blum
2026-05-18 09:38:45 +02:00
committed by Tyler Hicks
parent 4d97a37e2c
commit 95ce5ffd54
1 changed files with 7 additions and 17 deletions
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24
fs/ecryptfs/crypto.c
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@@ -49,25 +49,15 @@ void ecryptfs_from_hex(char *dst, char *src, int dst_size)
}
static int ecryptfs_crypto_api_algify_cipher_name(char **algified_name,
char *cipher_name,
char *chaining_modifier)
const char *cipher_name,
const char *chaining_modifier)
{
int cipher_name_len = strlen(cipher_name);
int chaining_modifier_len = strlen(chaining_modifier);
int algified_name_len;
int rc;
(*algified_name) = kasprintf(GFP_KERNEL, "%s(%s)", chaining_modifier,
cipher_name);
if (!(*algified_name))
return -ENOMEM;
algified_name_len = (chaining_modifier_len + cipher_name_len + 3);
(*algified_name) = kmalloc(algified_name_len, GFP_KERNEL);
if (!(*algified_name)) {
rc = -ENOMEM;
goto out;
}
snprintf((*algified_name), algified_name_len, "%s(%s)",
chaining_modifier, cipher_name);
rc = 0;
out:
return rc;
return 0;
}
/**