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sel_write_validatetrans(): 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 18:12:07 -04:00
parent 2ea659a9ef
commit 0b884d25f5
1 changed files with 5 additions and 7 deletions
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12
security/selinux/selinuxfs.c
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@ -656,14 +656,12 @@ static ssize_t sel_write_validatetrans(struct file *file,
if (*ppos != 0)
goto out;
rc = -ENOMEM;
req = kzalloc(count + 1, GFP_KERNEL);
if (!req)
goto out;
rc = -EFAULT;
if (copy_from_user(req, buf, count))
req = memdup_user_nul(buf, count);
if (IS_ERR(req)) {
rc = PTR_ERR(req);
req = NULL;
goto out;
}
rc = -ENOMEM;
oldcon = kzalloc(count + 1, GFP_KERNEL);