projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 | 1 | /* |
| 7b718769 NS |
2 | * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. |
| 3 | * All Rights Reserved. | |
| 1da177e4 | 4 | * |
| 7b718769 NS |
5 | * This program is free software; you can redistribute it and/or |
| 6 | * modify it under the terms of the GNU General Public License as | |
| 1da177e4 LT |
7 | * published by the Free Software Foundation. |
| 8 | * | |
| 7b718769 NS |
9 | * This program is distributed in the hope that it would be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 12 | * GNU General Public License for more details. | |
| 1da177e4 | 13 | * |
| 7b718769 NS |
14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write the Free Software Foundation, | |
| 16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
| 1da177e4 LT |
17 | */ |
| 18 | #include "xfs.h" | |
| a844f451 | 19 | #include "xfs_fs.h" |
| 1da177e4 | 20 | #include "xfs_types.h" |
| 1da177e4 LT |
21 | #include "xfs_log.h" |
| 22 | #include "xfs_trans.h" | |
| 23 | #include "xfs_sb.h" | |
| 1da177e4 | 24 | #include "xfs_dmapi.h" |
| 293688ec CH |
25 | #include "xfs_inum.h" |
| 26 | #include "xfs_ag.h" | |
| 1da177e4 | 27 | #include "xfs_mount.h" |
| 293688ec CH |
28 | #include "xfs_clnt.h" |
| 29 | ||
| 1da177e4 | 30 | |
| 293688ec | 31 | static struct xfs_dmops xfs_dmcore_stub = { |
| 1da177e4 LT |
32 | .xfs_send_data = (xfs_send_data_t)fs_nosys, |
| 33 | .xfs_send_mmap = (xfs_send_mmap_t)fs_noerr, | |
| 34 | .xfs_send_destroy = (xfs_send_destroy_t)fs_nosys, | |
| 35 | .xfs_send_namesp = (xfs_send_namesp_t)fs_nosys, | |
| 293688ec CH |
36 | .xfs_send_mount = (xfs_send_mount_t)fs_nosys, |
| 37 | .xfs_send_unmount = (xfs_send_unmount_t)fs_noerr, | |
| 1da177e4 | 38 | }; |
| 293688ec CH |
39 | |
| 40 | int | |
| 41 | xfs_dmops_get(struct xfs_mount *mp, struct xfs_mount_args *args) | |
| 42 | { | |
| 43 | if (args->flags & XFSMNT_DMAPI) { | |
| 44 | struct xfs_dmops *ops; | |
| 45 | ||
| 46 | ops = symbol_get(xfs_dmcore_xfs); | |
| 47 | if (!ops) { | |
| 48 | request_module("xfs_dmapi"); | |
| 49 | ops = symbol_get(xfs_dmcore_xfs); | |
| 50 | } | |
| 51 | ||
| 52 | if (!ops) { | |
| 53 | cmn_err(CE_WARN, "XFS: no dmapi support available."); | |
| 54 | return EINVAL; | |
| 55 | } | |
| 56 | mp->m_dm_ops = ops; | |
| 57 | } else { | |
| 58 | mp->m_dm_ops = &xfs_dmcore_stub; | |
| 59 | } | |
| 60 | ||
| 61 | return 0; | |
| 62 | } | |
| 63 | ||
| 64 | void | |
| 65 | xfs_dmops_put(struct xfs_mount *mp) | |
| 66 | { | |
| 67 | if (mp->m_dm_ops != &xfs_dmcore_stub) | |
| 68 | symbol_put(xfs_dmcore_xfs); | |
| 69 | } |