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Commit b4e28030 authored by Geliang Tang's avatar Geliang Tang Committed by Mimi Zohar
Browse files

ima: use memdup_user_nul



Use memdup_user_nul() helper instead of open-coding to simplify the
code.

Signed-off-by: default avatarGeliang Tang <geliangtang@gmail.com>
Signed-off-by: default avatarMimi Zohar <zohar@linux.vnet.ibm.com>
parent 5d659f28
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+4 −9
Original line number Diff line number Diff line
@@ -323,16 +323,11 @@ static ssize_t ima_write_policy(struct file *file, const char __user *buf,
	if (*ppos != 0)
		goto out;

	result = -ENOMEM;
	data = kmalloc(datalen + 1, GFP_KERNEL);
	if (!data)
	data = memdup_user_nul(buf, datalen);
	if (IS_ERR(data)) {
		result = PTR_ERR(data);
		goto out;

	*(data + datalen) = '\0';

	result = -EFAULT;
	if (copy_from_user(data, buf, datalen))
		goto out_free;
	}

	result = mutex_lock_interruptible(&ima_write_mutex);
	if (result < 0)