Commit 63e24c49 authored by Markus Elfring's avatar Markus Elfring Committed by Casey Schaufler

Smack: Use memdup_user() rather than duplicating its implementation

Reuse existing functionality from memdup_user() instead of keeping
duplicate source code.

This issue was detected by using the Coccinelle software.
Signed-off-by: default avatarMarkus Elfring <elfring@users.sourceforge.net>
Acked-by: default avatarCasey Schaufler <casey@schaufler-ca.com>
parent 29b4817d
......@@ -2523,14 +2523,9 @@ static ssize_t smk_write_revoke_subj(struct file *file, const char __user *buf,
if (count == 0 || count > SMK_LONGLABEL)
return -EINVAL;
data = kzalloc(count, GFP_KERNEL);
if (data == NULL)
return -ENOMEM;
if (copy_from_user(data, buf, count) != 0) {
rc = -EFAULT;
goto out_data;
}
data = memdup_user(buf, count);
if (IS_ERR(data))
return PTR_ERR(data);
cp = smk_parse_smack(data, count);
if (IS_ERR(cp)) {
......
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