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ima_write_policy(): don't open-code memdup_user_nul() 

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2017-05-13 18:15:25 -04:00
parent 0b884d25f5
commit 02412e9b4e
1 changed files with 4 additions and 9 deletions
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13
security/integrity/ima/ima_fs.c
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@ -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)