#include "xfs_fsops.h"
#include "xfs_alloc.h"
#include "xfs_rtalloc.h"
+#include "xfs_attr.h"
#include "xfs_ioctl.h"
#include "xfs_ioctl32.h"
if (bulkreq.ubuffer == NULL)
return -XFS_ERROR(EINVAL);
- if (cmd == XFS_IOC_FSINUMBERS_32)
+ if (cmd == XFS_IOC_FSINUMBERS_32) {
error = xfs_inumbers(mp, &inlast, &count,
bulkreq.ubuffer, xfs_inumbers_fmt_compat);
- else {
+ } else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE_32) {
+ int res;
+
+ error = xfs_bulkstat_one_compat(mp, inlast, bulkreq.ubuffer,
+ sizeof(compat_xfs_bstat_t),
+ NULL, 0, NULL, NULL, &res);
+ } else if (cmd == XFS_IOC_FSBULKSTAT_32) {
error = xfs_bulkstat(mp, &inlast, &count,
xfs_bulkstat_one_compat, NULL,
sizeof(compat_xfs_bstat_t), bulkreq.ubuffer,
BULKSTAT_FG_QUICK, &done);
- }
+ } else
+ error = XFS_ERROR(EINVAL);
if (error)
return -error;
return 0;
}
+/*
+ * Convert userspace handle data into inode.
+ *
+ * We use the fact that all the fsop_handlereq ioctl calls have a data
+ * structure argument whose first component is always a xfs_fsop_handlereq_t,
+ * so we can pass that sub structure into this handy, shared routine.
+ *
+ * If no error, caller must always iput the returned inode.
+ */
+STATIC int
+xfs_vget_fsop_handlereq_compat(
+ xfs_mount_t *mp,
+ struct inode *parinode, /* parent inode pointer */
+ compat_xfs_fsop_handlereq_t *hreq,
+ struct inode **inode)
+{
+ void __user *hanp;
+ size_t hlen;
+ xfs_fid_t *xfid;
+ xfs_handle_t *handlep;
+ xfs_handle_t handle;
+ xfs_inode_t *ip;
+ xfs_ino_t ino;
+ __u32 igen;
+ int error;
+
+ /*
+ * Only allow handle opens under a directory.
+ */
+ if (!S_ISDIR(parinode->i_mode))
+ return XFS_ERROR(ENOTDIR);
+
+ hanp = compat_ptr(hreq->ihandle);
+ hlen = hreq->ihandlen;
+ handlep = &handle;
+
+ if (hlen < sizeof(handlep->ha_fsid) || hlen > sizeof(*handlep))
+ return XFS_ERROR(EINVAL);
+ if (copy_from_user(handlep, hanp, hlen))
+ return XFS_ERROR(EFAULT);
+ if (hlen < sizeof(*handlep))
+ memset(((char *)handlep) + hlen, 0, sizeof(*handlep) - hlen);
+ if (hlen > sizeof(handlep->ha_fsid)) {
+ if (handlep->ha_fid.fid_len !=
+ (hlen - sizeof(handlep->ha_fsid) -
+ sizeof(handlep->ha_fid.fid_len)) ||
+ handlep->ha_fid.fid_pad)
+ return XFS_ERROR(EINVAL);
+ }
+
+ /*
+ * Crack the handle, obtain the inode # & generation #
+ */
+ xfid = (struct xfs_fid *)&handlep->ha_fid;
+ if (xfid->fid_len == sizeof(*xfid) - sizeof(xfid->fid_len)) {
+ ino = xfid->fid_ino;
+ igen = xfid->fid_gen;
+ } else {
+ return XFS_ERROR(EINVAL);
+ }
+
+ /*
+ * Get the XFS inode, building a Linux inode to go with it.
+ */
+ error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_SHARED, &ip, 0);
+ if (error)
+ return error;
+ if (ip == NULL)
+ return XFS_ERROR(EIO);
+ if (ip->i_d.di_gen != igen) {
+ xfs_iput_new(ip, XFS_ILOCK_SHARED);
+ return XFS_ERROR(ENOENT);
+ }
+
+ xfs_iunlock(ip, XFS_ILOCK_SHARED);
+
+ *inode = VFS_I(ip);
+ return 0;
+}
+
+STATIC int
+xfs_compat_attrlist_by_handle(
+ xfs_mount_t *mp,
+ void __user *arg,
+ struct inode *parinode)
+{
+ int error;
+ attrlist_cursor_kern_t *cursor;
+ compat_xfs_fsop_attrlist_handlereq_t al_hreq;
+ struct inode *inode;
+ char *kbuf;
+
+ if (!capable(CAP_SYS_ADMIN))
+ return -XFS_ERROR(EPERM);
+ if (copy_from_user(&al_hreq, arg,
+ sizeof(compat_xfs_fsop_attrlist_handlereq_t)))
+ return -XFS_ERROR(EFAULT);
+ if (al_hreq.buflen > XATTR_LIST_MAX)
+ return -XFS_ERROR(EINVAL);
+
+ /*
+ * Reject flags, only allow namespaces.
+ */
+ if (al_hreq.flags & ~(ATTR_ROOT | ATTR_SECURE))
+ return -XFS_ERROR(EINVAL);
+
+ error = xfs_vget_fsop_handlereq_compat(mp, parinode, &al_hreq.hreq,
+ &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;
+ error = xfs_attr_list(XFS_I(inode), kbuf, al_hreq.buflen,
+ al_hreq.flags, cursor);
+ if (error)
+ goto out_kfree;
+
+ if (copy_to_user(compat_ptr(al_hreq.buffer), kbuf, al_hreq.buflen))
+ error = -EFAULT;
+
+ out_kfree:
+ kfree(kbuf);
+ out_vn_rele:
+ iput(inode);
+ out:
+ return -error;
+}
+
+STATIC int
+xfs_compat_attrmulti_by_handle(
+ xfs_mount_t *mp,
+ void __user *arg,
+ struct inode *parinode)
+{
+ int error;
+ compat_xfs_attr_multiop_t *ops;
+ compat_xfs_fsop_attrmulti_handlereq_t am_hreq;
+ struct inode *inode;
+ unsigned int i, size;
+ char *attr_name;
+
+ if (!capable(CAP_SYS_ADMIN))
+ return -XFS_ERROR(EPERM);
+ if (copy_from_user(&am_hreq, arg,
+ sizeof(compat_xfs_fsop_attrmulti_handlereq_t)))
+ return -XFS_ERROR(EFAULT);
+
+ error = xfs_vget_fsop_handlereq_compat(mp, parinode, &am_hreq.hreq,
+ &inode);
+ if (error)
+ goto out;
+
+ error = E2BIG;
+ size = am_hreq.opcount * sizeof(compat_xfs_attr_multiop_t);
+ if (!size || size > 16 * PAGE_SIZE)
+ goto out_vn_rele;
+
+ error = ENOMEM;
+ ops = kmalloc(size, GFP_KERNEL);
+ if (!ops)
+ goto out_vn_rele;
+
+ 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,
+ compat_ptr(ops[i].am_attrname),
+ MAXNAMELEN);
+ if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN)
+ error = -ERANGE;
+ if (ops[i].am_error < 0)
+ break;
+
+ switch (ops[i].am_opcode) {
+ case ATTR_OP_GET:
+ ops[i].am_error = xfs_attrmulti_attr_get(inode,
+ attr_name,
+ compat_ptr(ops[i].am_attrvalue),
+ &ops[i].am_length, ops[i].am_flags);
+ break;
+ case ATTR_OP_SET:
+ ops[i].am_error = xfs_attrmulti_attr_set(inode,
+ attr_name,
+ compat_ptr(ops[i].am_attrvalue),
+ ops[i].am_length, ops[i].am_flags);
+ break;
+ case ATTR_OP_REMOVE:
+ ops[i].am_error = xfs_attrmulti_attr_remove(inode,
+ attr_name, ops[i].am_flags);
+ break;
+ default:
+ ops[i].am_error = EINVAL;
+ }
+ }
+
+ if (copy_to_user(compat_ptr(am_hreq.ops), ops, size))
+ error = XFS_ERROR(EFAULT);
+
+ kfree(attr_name);
+ out_kfree_ops:
+ kfree(ops);
+ out_vn_rele:
+ iput(inode);
+ out:
+ return -error;
+}
+
STATIC long
xfs_compat_ioctl(
xfs_inode_t *ip,
case XFS_IOC_GETBMAP:
case XFS_IOC_GETBMAPA:
case XFS_IOC_GETBMAPX:
-/* not handled
- case XFS_IOC_FSSETDM_BY_HANDLE:
- case XFS_IOC_ATTRLIST_BY_HANDLE:
- case XFS_IOC_ATTRMULTI_BY_HANDLE:
-*/
+/* case XFS_IOC_FSSETDM_BY_HANDLE: not handled */
case XFS_IOC_FSCOUNTS:
case XFS_IOC_SET_RESBLKS:
case XFS_IOC_GET_RESBLKS:
return -XFS_ERROR(EFAULT);
return xfs_readlink_by_handle(mp, &hreq, inode);
}
+ case XFS_IOC_ATTRLIST_BY_HANDLE_32:
+ return xfs_compat_attrlist_by_handle(mp, arg, inode);
+ case XFS_IOC_ATTRMULTI_BY_HANDLE_32:
+ return xfs_compat_attrmulti_by_handle(mp, arg, inode);
default:
return -XFS_ERROR(ENOIOCTLCMD);
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff