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xfs: use memdup_user() 

Remove open-coded memdup_user()

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Li Zefan 2009-04-08 15:08:04 +08:00 committed by Al Viro
parent 1c8542c7bb
commit 0e639bdeef
2 changed files with 11 additions and 24 deletions
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23
fs/xfs/linux-2.6/xfs_ioctl.c
View File

@ -489,17 +489,12 @@ xfs_attrmulti_attr_set(
if (len > XATTR_SIZE_MAX)
return EINVAL;
kbuf = kmalloc(len, GFP_KERNEL);
if (!kbuf)
return ENOMEM;
if (copy_from_user(kbuf, ubuf, len))
goto out_kfree;
kbuf = memdup_user(ubuf, len);
if (IS_ERR(kbuf))
return PTR_ERR(kbuf);
error = xfs_attr_set(XFS_I(inode), name, kbuf, len, flags);
out_kfree:
kfree(kbuf);
return error;
}
@ -540,20 +535,16 @@ xfs_attrmulti_by_handle(
if (!size || size > 16 * PAGE_SIZE)
goto out_dput;
error = ENOMEM;
ops = kmalloc(size, GFP_KERNEL);
if (!ops)
ops = memdup_user(am_hreq.ops, size);
if (IS_ERR(ops)) {
error = PTR_ERR(ops);
goto out_dput;
error = EFAULT;
if (copy_from_user(ops, am_hreq.ops, size))
goto out_kfree_ops;
}
attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL);
if (!attr_name)
goto out_kfree_ops;
error = 0;
for (i = 0; i < am_hreq.opcount; i++) {
ops[i].am_error = strncpy_from_user(attr_name,

12
fs/xfs/linux-2.6/xfs_ioctl32.c
View File

@ -427,20 +427,16 @@ xfs_compat_attrmulti_by_handle(
if (!size || size > 16 * PAGE_SIZE)
goto out_dput;
error = ENOMEM;
ops = kmalloc(size, GFP_KERNEL);
if (!ops)
ops = memdup_user(compat_ptr(am_hreq.ops), size);
if (IS_ERR(ops)) {
error = PTR_ERR(ops);
goto out_dput;
error = EFAULT;
if (copy_from_user(ops, compat_ptr(am_hreq.ops), size))
goto out_kfree_ops;
}
attr_name = kmalloc(MAXNAMELEN, GFP_KERNEL);
if (!attr_name)
goto out_kfree_ops;
error = 0;
for (i = 0; i < am_hreq.opcount; i++) {
ops[i].am_error = strncpy_from_user(attr_name,