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Make crypt_keyslot_set_encryption a bit more robust.

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Nitpicking(tm) but let's not free old cipher spec unless
we have valid new one.
This commit is contained in:
Ondrej Kozina
2021-02-10 16:49:22 +01:00
parent 65b43d5d12
commit 7d912c7d3e
1 changed files with 4 additions and 4 deletions
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8
lib/setup.c
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@@ -5177,17 +5177,17 @@ int crypt_keyslot_set_encryption(struct crypt_device *cd,
{
char *tmp;
if (!cd || !cipher || ! key_size || !isLUKS2(cd->type))
if (!cd || !cipher || !key_size || !isLUKS2(cd->type))
return -EINVAL;
if (LUKS2_keyslot_cipher_incompatible(cd, cipher))
return -EINVAL;
tmp = strdup(cipher);
if (!(tmp = strdup(cipher)))
return -ENOMEM;
free(cd->u.luks2.keyslot_cipher);
cd->u.luks2.keyslot_cipher = tmp;
if (!cd->u.luks2.keyslot_cipher)
return -ENOMEM;
cd->u.luks2.keyslot_key_size = key_size;
return 0;