STATIC int
xfs_attrlist_by_handle(
xfs_mount_t *mp,
unsigned long arg,
struct file *parfilp,
struct inode *parinode)
{
int error;
attrlist_cursor_kern_t *cursor;
xfs_fsop_attrlist_handlereq_t al_hreq;
struct inode *inode;
vnode_t *vp;
error = xfs_vget_fsop_handlereq(mp, parinode, CAP_SYS_ADMIN, arg,
sizeof(xfs_fsop_attrlist_handlereq_t),
(xfs_fsop_handlereq_t *)&al_hreq,
&vp, &inode);
if (error)
return -error;
cursor = (attrlist_cursor_kern_t *)&al_hreq.pos;
VOP_ATTR_LIST(vp, al_hreq.buffer, al_hreq.buflen, al_hreq.flags,
cursor, NULL, error);
VN_RELE(vp);
if (error)
return -error;
return 0;
}
STATIC int
xfs_attrlist_by_handle(
xfs_mount_t *mp,
void __user *arg,
struct file *parfilp,
struct inode *parinode)
{
int error;
attrlist_cursor_kern_t *cursor;
xfs_fsop_attrlist_handlereq_t al_hreq;
struct inode *inode;
vnode_t *vp;
char *kbuf;
if (!capable(CAP_SYS_ADMIN))
return -XFS_ERROR(EPERM);
if (copy_from_user(&al_hreq, arg, sizeof(xfs_fsop_attrlist_handlereq_t)))
return -XFS_ERROR(EFAULT);
if (al_hreq.buflen > XATTR_LIST_MAX)
return -XFS_ERROR(EINVAL);
error = xfs_vget_fsop_handlereq(mp, parinode, &al_hreq.hreq,
&vp, &inode);
if (error)
goto out;
kbuf = kmalloc(al_hreq.buflen, GFP_KERNEL);
if (!kbuf)
goto out_vn_rele;
cursor = (attrlist_cursor_kern_t *)&al_hreq.pos;
VOP_ATTR_LIST(vp, kbuf, al_hreq.buflen, al_hreq.flags,
cursor, NULL, error);
if (error)
goto out_kfree;
if (copy_to_user(al_hreq.buffer, kbuf, al_hreq.buflen))
error = -EFAULT;
out_kfree:
kfree(kbuf);
out_vn_rele:
VN_RELE(vp);
out:
return -error;
}
STATIC ssize_t
linvfs_listxattr(
struct dentry *dentry,
char *data,
size_t size)
{
ssize_t error;
int result = 0;
int xflags = ATTR_KERNAMELS;
char *k = data;
attrlist_cursor_kern_t cursor;
xattr_namespace_t *sys;
vnode_t *vp;
vp = LINVFS_GET_VP(dentry->d_inode);
if (!size)
xflags |= ATTR_KERNOVAL;
if (capable(CAP_SYS_ADMIN))
xflags |= ATTR_KERNFULLS;
memset(&cursor, 0, sizeof(cursor));
VOP_ATTR_LIST(vp, data, size, xflags, &cursor, NULL, error);
if (error > 0)
return -error;
result += -error;
k += result; /* advance start of our buffer */
for (sys = &sys_namespace_array[0]; sys->name != NULL; sys++) {
if (sys->exists == NULL || !sys->exists(vp))
continue;
result += xfs_namespaces[SYSTEM_NAMES].namelen;
result += sys->namelen + 1;
if (size) {
if (result > size)
return -ERANGE;
strcpy(k, xfs_namespaces[SYSTEM_NAMES].name);
k += xfs_namespaces[SYSTEM_NAMES].namelen;
strcpy(k, sys->name);
k += sys->namelen + 1;
}
}
return result;
}
