staging: lustre: obdclass: return -EFAULT if copy_from_user() fails
The copy_from_user() function returns the number of bytes which we
weren't able to copy. We don't want to return that to the user but
instead we want to return -EFAULT.
Fixes: d7e09d0397
("staging: add Lustre file system client support")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
parent
3ca121c2f4
commit
092c3def24
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@ -180,7 +180,8 @@ int class_handle_ioctl(unsigned int cmd, unsigned long arg)
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err = -ENOMEM;
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err = -ENOMEM;
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goto out;
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goto out;
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}
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}
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err = copy_from_user(lcfg, data->ioc_pbuf1, data->ioc_plen1);
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if (copy_from_user(lcfg, data->ioc_pbuf1, data->ioc_plen1))
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err = -EFAULT;
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if (!err)
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if (!err)
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err = lustre_cfg_sanity_check(lcfg, data->ioc_plen1);
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err = lustre_cfg_sanity_check(lcfg, data->ioc_plen1);
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if (!err)
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if (!err)
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