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authorDavid Howells <dhowells@redhat.com>2007-05-11 01:22:20 -0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-11 11:29:32 -0400
commit45222b9e02fb282eb0a8007a3d992dd229ec2410 (patch)
tree2160228a23c700437bda0898d3a700ac499b941d /fs/afs/fsclient.c
parent0f300ca9284caabdd2c07c7f91b90f1f530f614e (diff)
AFS: implement statfs
Implement the statfs() op for AFS. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/afs/fsclient.c')
-rw-r--r--fs/afs/fsclient.c298
1 files changed, 298 insertions, 0 deletions
diff --git a/fs/afs/fsclient.c b/fs/afs/fsclient.c
index 56cc0efa2a0c..5dff1308b6f0 100644
--- a/fs/afs/fsclient.c
+++ b/fs/afs/fsclient.c
@@ -202,6 +202,29 @@ static void xdr_encode_AFS_StoreStatus(__be32 **_bp, struct iattr *attr)
202} 202}
203 203
204/* 204/*
205 * decode an AFSFetchVolumeStatus block
206 */
207static void xdr_decode_AFSFetchVolumeStatus(const __be32 **_bp,
208 struct afs_volume_status *vs)
209{
210 const __be32 *bp = *_bp;
211
212 vs->vid = ntohl(*bp++);
213 vs->parent_id = ntohl(*bp++);
214 vs->online = ntohl(*bp++);
215 vs->in_service = ntohl(*bp++);
216 vs->blessed = ntohl(*bp++);
217 vs->needs_salvage = ntohl(*bp++);
218 vs->type = ntohl(*bp++);
219 vs->min_quota = ntohl(*bp++);
220 vs->max_quota = ntohl(*bp++);
221 vs->blocks_in_use = ntohl(*bp++);
222 vs->part_blocks_avail = ntohl(*bp++);
223 vs->part_max_blocks = ntohl(*bp++);
224 *_bp = bp;
225}
226
227/*
205 * deliver reply data to an FS.FetchStatus 228 * deliver reply data to an FS.FetchStatus
206 */ 229 */
207static int afs_deliver_fs_fetch_status(struct afs_call *call, 230static int afs_deliver_fs_fetch_status(struct afs_call *call,
@@ -1450,3 +1473,278 @@ int afs_fs_setattr(struct afs_server *server, struct key *key,
1450 1473
1451 return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); 1474 return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
1452} 1475}
1476
1477/*
1478 * deliver reply data to an FS.GetVolumeStatus
1479 */
1480static int afs_deliver_fs_get_volume_status(struct afs_call *call,
1481 struct sk_buff *skb, bool last)
1482{
1483 const __be32 *bp;
1484 char *p;
1485 int ret;
1486
1487 _enter("{%u},{%u},%d", call->unmarshall, skb->len, last);
1488
1489 switch (call->unmarshall) {
1490 case 0:
1491 call->offset = 0;
1492 call->unmarshall++;
1493
1494 /* extract the returned status record */
1495 case 1:
1496 _debug("extract status");
1497 ret = afs_extract_data(call, skb, last, call->buffer,
1498 12 * 4);
1499 switch (ret) {
1500 case 0: break;
1501 case -EAGAIN: return 0;
1502 default: return ret;
1503 }
1504
1505 bp = call->buffer;
1506 xdr_decode_AFSFetchVolumeStatus(&bp, call->reply2);
1507 call->offset = 0;
1508 call->unmarshall++;
1509
1510 /* extract the volume name length */
1511 case 2:
1512 ret = afs_extract_data(call, skb, last, &call->tmp, 4);
1513 switch (ret) {
1514 case 0: break;
1515 case -EAGAIN: return 0;
1516 default: return ret;
1517 }
1518
1519 call->count = ntohl(call->tmp);
1520 _debug("volname length: %u", call->count);
1521 if (call->count >= AFSNAMEMAX)
1522 return -EBADMSG;
1523 call->offset = 0;
1524 call->unmarshall++;
1525
1526 /* extract the volume name */
1527 case 3:
1528 _debug("extract volname");
1529 if (call->count > 0) {
1530 ret = afs_extract_data(call, skb, last, call->reply3,
1531 call->count);
1532 switch (ret) {
1533 case 0: break;
1534 case -EAGAIN: return 0;
1535 default: return ret;
1536 }
1537 }
1538
1539 p = call->reply3;
1540 p[call->count] = 0;
1541 _debug("volname '%s'", p);
1542
1543 call->offset = 0;
1544 call->unmarshall++;
1545
1546 /* extract the volume name padding */
1547 if ((call->count & 3) == 0) {
1548 call->unmarshall++;
1549 goto no_volname_padding;
1550 }
1551 call->count = 4 - (call->count & 3);
1552
1553 case 4:
1554 ret = afs_extract_data(call, skb, last, call->buffer,
1555 call->count);
1556 switch (ret) {
1557 case 0: break;
1558 case -EAGAIN: return 0;
1559 default: return ret;
1560 }
1561
1562 call->offset = 0;
1563 call->unmarshall++;
1564 no_volname_padding:
1565
1566 /* extract the offline message length */
1567 case 5:
1568 ret = afs_extract_data(call, skb, last, &call->tmp, 4);
1569 switch (ret) {
1570 case 0: break;
1571 case -EAGAIN: return 0;
1572 default: return ret;
1573 }
1574
1575 call->count = ntohl(call->tmp);
1576 _debug("offline msg length: %u", call->count);
1577 if (call->count >= AFSNAMEMAX)
1578 return -EBADMSG;
1579 call->offset = 0;
1580 call->unmarshall++;
1581
1582 /* extract the offline message */
1583 case 6:
1584 _debug("extract offline");
1585 if (call->count > 0) {
1586 ret = afs_extract_data(call, skb, last, call->reply3,
1587 call->count);
1588 switch (ret) {
1589 case 0: break;
1590 case -EAGAIN: return 0;
1591 default: return ret;
1592 }
1593 }
1594
1595 p = call->reply3;
1596 p[call->count] = 0;
1597 _debug("offline '%s'", p);
1598
1599 call->offset = 0;
1600 call->unmarshall++;
1601
1602 /* extract the offline message padding */
1603 if ((call->count & 3) == 0) {
1604 call->unmarshall++;
1605 goto no_offline_padding;
1606 }
1607 call->count = 4 - (call->count & 3);
1608
1609 case 7:
1610 ret = afs_extract_data(call, skb, last, call->buffer,
1611 call->count);
1612 switch (ret) {
1613 case 0: break;
1614 case -EAGAIN: return 0;
1615 default: return ret;
1616 }
1617
1618 call->offset = 0;
1619 call->unmarshall++;
1620 no_offline_padding:
1621
1622 /* extract the message of the day length */
1623 case 8:
1624 ret = afs_extract_data(call, skb, last, &call->tmp, 4);
1625 switch (ret) {
1626 case 0: break;
1627 case -EAGAIN: return 0;
1628 default: return ret;
1629 }
1630
1631 call->count = ntohl(call->tmp);
1632 _debug("motd length: %u", call->count);
1633 if (call->count >= AFSNAMEMAX)
1634 return -EBADMSG;
1635 call->offset = 0;
1636 call->unmarshall++;
1637
1638 /* extract the message of the day */
1639 case 9:
1640 _debug("extract motd");
1641 if (call->count > 0) {
1642 ret = afs_extract_data(call, skb, last, call->reply3,
1643 call->count);
1644 switch (ret) {
1645 case 0: break;
1646 case -EAGAIN: return 0;
1647 default: return ret;
1648 }
1649 }
1650
1651 p = call->reply3;
1652 p[call->count] = 0;
1653 _debug("motd '%s'", p);
1654
1655 call->offset = 0;
1656 call->unmarshall++;
1657
1658 /* extract the message of the day padding */
1659 if ((call->count & 3) == 0) {
1660 call->unmarshall++;
1661 goto no_motd_padding;
1662 }
1663 call->count = 4 - (call->count & 3);
1664
1665 case 10:
1666 ret = afs_extract_data(call, skb, last, call->buffer,
1667 call->count);
1668 switch (ret) {
1669 case 0: break;
1670 case -EAGAIN: return 0;
1671 default: return ret;
1672 }
1673
1674 call->offset = 0;
1675 call->unmarshall++;
1676 no_motd_padding:
1677
1678 case 11:
1679 _debug("trailer %d", skb->len);
1680 if (skb->len != 0)
1681 return -EBADMSG;
1682 break;
1683 }
1684
1685 if (!last)
1686 return 0;
1687
1688 _leave(" = 0 [done]");
1689 return 0;
1690}
1691
1692/*
1693 * destroy an FS.GetVolumeStatus call
1694 */
1695static void afs_get_volume_status_call_destructor(struct afs_call *call)
1696{
1697 kfree(call->reply3);
1698 call->reply3 = NULL;
1699 afs_flat_call_destructor(call);
1700}
1701
1702/*
1703 * FS.GetVolumeStatus operation type
1704 */
1705static const struct afs_call_type afs_RXFSGetVolumeStatus = {
1706 .name = "FS.GetVolumeStatus",
1707 .deliver = afs_deliver_fs_get_volume_status,
1708 .abort_to_error = afs_abort_to_error,
1709 .destructor = afs_get_volume_status_call_destructor,
1710};
1711
1712/*
1713 * fetch the status of a volume
1714 */
1715int afs_fs_get_volume_status(struct afs_server *server,
1716 struct key *key,
1717 struct afs_vnode *vnode,
1718 struct afs_volume_status *vs,
1719 const struct afs_wait_mode *wait_mode)
1720{
1721 struct afs_call *call;
1722 __be32 *bp;
1723 void *tmpbuf;
1724
1725 _enter("");
1726
1727 tmpbuf = kmalloc(AFSOPAQUEMAX, GFP_KERNEL);
1728 if (!tmpbuf)
1729 return -ENOMEM;
1730
1731 call = afs_alloc_flat_call(&afs_RXFSGetVolumeStatus, 2 * 4, 12 * 4);
1732 if (!call) {
1733 kfree(tmpbuf);
1734 return -ENOMEM;
1735 }
1736
1737 call->key = key;
1738 call->reply = vnode;
1739 call->reply2 = vs;
1740 call->reply3 = tmpbuf;
1741 call->service_id = FS_SERVICE;
1742 call->port = htons(AFS_FS_PORT);
1743
1744 /* marshall the parameters */
1745 bp = call->request;
1746 bp[0] = htonl(FSGETVOLUMESTATUS);
1747 bp[1] = htonl(vnode->fid.vid);
1748
1749 return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
1750}
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-04 13:12:15 -0500