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authorDavid Howells <dhowells@redhat.com>2018-10-20 00:57:58 +0100
committerDavid Howells <dhowells@redhat.com>2018-10-24 00:41:08 +0100
commit30062bd13e3659a309d249a06d5f4ebb4a5c5251 (patch)
tree151b4925fbf78d25f098fe54a1d2422a434ee780 /fs/afs/fsclient.c
parentd4936803a92b7d088086b1d7b8ecb5739d52c03b (diff)
afs: Implement YFS support in the fs client
Implement support for talking to YFS-variant fileservers in the cache manager and the filesystem client. These implement upgraded services on the same port as their AFS services. YFS fileservers provide expanded capabilities over AFS. Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'fs/afs/fsclient.c')
-rw-r--r--fs/afs/fsclient.c104
1 files changed, 86 insertions, 18 deletions
diff --git a/fs/afs/fsclient.c b/fs/afs/fsclient.c
index 2da65309e0de..3975969719de 100644
--- a/fs/afs/fsclient.c
+++ b/fs/afs/fsclient.c
@@ -17,6 +17,7 @@
#include "internal.h"
#include "afs_fs.h"
#include "xdr_fs.h"
+#include "protocol_yfs.h"
static const struct afs_fid afs_zero_fid;
@@ -312,14 +313,18 @@ static void xdr_decode_AFSVolSync(const __be32 **_bp,
struct afs_volsync *volsync)
{
const __be32 *bp = *_bp;
+ u32 creation;
- volsync->creation = ntohl(*bp++);
+ creation = ntohl(*bp++);
bp++; /* spare2 */
bp++; /* spare3 */
bp++; /* spare4 */
bp++; /* spare5 */
bp++; /* spare6 */
*_bp = bp;
+
+ if (volsync)
+ volsync->creation = creation;
}
/*
@@ -380,6 +385,8 @@ static void xdr_decode_AFSFetchVolumeStatus(const __be32 **_bp,
vs->blocks_in_use = ntohl(*bp++);
vs->part_blocks_avail = ntohl(*bp++);
vs->part_max_blocks = ntohl(*bp++);
+ vs->vol_copy_date = 0;
+ vs->vol_backup_date = 0;
*_bp = bp;
}
@@ -405,8 +412,7 @@ static int afs_deliver_fs_fetch_status_vnode(struct afs_call *call)
if (ret < 0)
return ret;
xdr_decode_AFSCallBack(call, vnode, &bp);
- if (call->reply[1])
- xdr_decode_AFSVolSync(&bp, call->reply[1]);
+ xdr_decode_AFSVolSync(&bp, call->reply[1]);
_leave(" = 0 [done]");
return 0;
@@ -433,6 +439,9 @@ int afs_fs_fetch_file_status(struct afs_fs_cursor *fc, struct afs_volsync *volsy
struct afs_net *net = afs_v2net(vnode);
__be32 *bp;
+ if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags))
+ return yfs_fs_fetch_file_status(fc, volsync, new_inode);
+
_enter(",%x,{%llx:%llu},,",
key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
@@ -567,8 +576,7 @@ static int afs_deliver_fs_fetch_data(struct afs_call *call)
if (ret < 0)
return ret;
xdr_decode_AFSCallBack(call, vnode, &bp);
- if (call->reply[1])
- xdr_decode_AFSVolSync(&bp, call->reply[1]);
+ xdr_decode_AFSVolSync(&bp, call->reply[1]);
call->unmarshall++;
@@ -665,6 +673,9 @@ int afs_fs_fetch_data(struct afs_fs_cursor *fc, struct afs_read *req)
struct afs_net *net = afs_v2net(vnode);
__be32 *bp;
+ if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags))
+ return yfs_fs_fetch_data(fc, req);
+
if (upper_32_bits(req->pos) ||
upper_32_bits(req->len) ||
upper_32_bits(req->pos + req->len))
@@ -765,6 +776,15 @@ int afs_fs_create(struct afs_fs_cursor *fc,
size_t namesz, reqsz, padsz;
__be32 *bp;
+ if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags)){
+ if (S_ISDIR(mode))
+ return yfs_fs_make_dir(fc, name, mode, current_data_version,
+ newfid, newstatus, newcb);
+ else
+ return yfs_fs_create_file(fc, name, mode, current_data_version,
+ newfid, newstatus, newcb);
+ }
+
_enter("");
namesz = strlen(name);
@@ -857,15 +877,18 @@ static const struct afs_call_type afs_RXFSRemoveDir = {
/*
* remove a file or directory
*/
-int afs_fs_remove(struct afs_fs_cursor *fc, const char *name, bool isdir,
- u64 current_data_version)
+int afs_fs_remove(struct afs_fs_cursor *fc, struct afs_vnode *vnode,
+ const char *name, bool isdir, u64 current_data_version)
{
- struct afs_vnode *vnode = fc->vnode;
+ struct afs_vnode *dvnode = fc->vnode;
struct afs_call *call;
- struct afs_net *net = afs_v2net(vnode);
+ struct afs_net *net = afs_v2net(dvnode);
size_t namesz, reqsz, padsz;
__be32 *bp;
+ if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags))
+ return yfs_fs_remove(fc, vnode, name, isdir, current_data_version);
+
_enter("");
namesz = strlen(name);
@@ -879,15 +902,16 @@ int afs_fs_remove(struct afs_fs_cursor *fc, const char *name, bool isdir,
return -ENOMEM;
call->key = fc->key;
- call->reply[0] = vnode;
+ call->reply[0] = dvnode;
+ call->reply[1] = vnode;
call->expected_version = current_data_version + 1;
/* marshall the parameters */
bp = call->request;
*bp++ = htonl(isdir ? FSREMOVEDIR : FSREMOVEFILE);
- *bp++ = htonl(vnode->fid.vid);
- *bp++ = htonl(vnode->fid.vnode);
- *bp++ = htonl(vnode->fid.unique);
+ *bp++ = htonl(dvnode->fid.vid);
+ *bp++ = htonl(dvnode->fid.vnode);
+ *bp++ = htonl(dvnode->fid.unique);
*bp++ = htonl(namesz);
memcpy(bp, name, namesz);
bp = (void *) bp + namesz;
@@ -897,7 +921,7 @@ int afs_fs_remove(struct afs_fs_cursor *fc, const char *name, bool isdir,
}
afs_use_fs_server(call, fc->cbi);
- trace_afs_make_fs_call(call, &vnode->fid);
+ trace_afs_make_fs_call(call, &dvnode->fid);
return afs_make_call(&fc->ac, call, GFP_NOFS, false);
}
@@ -953,6 +977,9 @@ int afs_fs_link(struct afs_fs_cursor *fc, struct afs_vnode *vnode,
size_t namesz, reqsz, padsz;
__be32 *bp;
+ if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags))
+ return yfs_fs_link(fc, vnode, name, current_data_version);
+
_enter("");
namesz = strlen(name);
@@ -1047,6 +1074,10 @@ int afs_fs_symlink(struct afs_fs_cursor *fc,
size_t namesz, reqsz, padsz, c_namesz, c_padsz;
__be32 *bp;
+ if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags))
+ return yfs_fs_symlink(fc, name, contents, current_data_version,
+ newfid, newstatus);
+
_enter("");
namesz = strlen(name);
@@ -1159,6 +1190,12 @@ int afs_fs_rename(struct afs_fs_cursor *fc,
size_t reqsz, o_namesz, o_padsz, n_namesz, n_padsz;
__be32 *bp;
+ if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags))
+ return yfs_fs_rename(fc, orig_name,
+ new_dvnode, new_name,
+ current_orig_data_version,
+ current_new_data_version);
+
_enter("");
o_namesz = strlen(orig_name);
@@ -1329,6 +1366,9 @@ int afs_fs_store_data(struct afs_fs_cursor *fc, struct address_space *mapping,
loff_t size, pos, i_size;
__be32 *bp;
+ if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags))
+ return yfs_fs_store_data(fc, mapping, first, last, offset, to);
+
_enter(",%x,{%llx:%llu},,",
key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
@@ -1544,6 +1584,9 @@ int afs_fs_setattr(struct afs_fs_cursor *fc, struct iattr *attr)
struct afs_net *net = afs_v2net(vnode);
__be32 *bp;
+ if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags))
+ return yfs_fs_setattr(fc, attr);
+
if (attr->ia_valid & ATTR_SIZE)
return afs_fs_setattr_size(fc, attr);
@@ -1728,6 +1771,9 @@ int afs_fs_get_volume_status(struct afs_fs_cursor *fc,
__be32 *bp;
void *tmpbuf;
+ if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags))
+ return yfs_fs_get_volume_status(fc, vs);
+
_enter("");
tmpbuf = kmalloc(AFSOPAQUEMAX, GFP_KERNEL);
@@ -1817,6 +1863,9 @@ int afs_fs_set_lock(struct afs_fs_cursor *fc, afs_lock_type_t type)
struct afs_net *net = afs_v2net(vnode);
__be32 *bp;
+ if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags))
+ return yfs_fs_set_lock(fc, type);
+
_enter("");
call = afs_alloc_flat_call(net, &afs_RXFSSetLock, 5 * 4, 6 * 4);
@@ -1849,6 +1898,9 @@ int afs_fs_extend_lock(struct afs_fs_cursor *fc)
struct afs_net *net = afs_v2net(vnode);
__be32 *bp;
+ if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags))
+ return yfs_fs_extend_lock(fc);
+
_enter("");
call = afs_alloc_flat_call(net, &afs_RXFSExtendLock, 4 * 4, 6 * 4);
@@ -1880,6 +1932,9 @@ int afs_fs_release_lock(struct afs_fs_cursor *fc)
struct afs_net *net = afs_v2net(vnode);
__be32 *bp;
+ if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags))
+ return yfs_fs_release_lock(fc);
+
_enter("");
call = afs_alloc_flat_call(net, &afs_RXFSReleaseLock, 4 * 4, 6 * 4);
@@ -1951,6 +2006,7 @@ int afs_fs_give_up_all_callbacks(struct afs_net *net,
*/
static int afs_deliver_fs_get_capabilities(struct afs_call *call)
{
+ struct afs_server *server = call->reply[0];
u32 count;
int ret;
@@ -1986,6 +2042,11 @@ static int afs_deliver_fs_get_capabilities(struct afs_call *call)
break;
}
+ if (call->service_id == YFS_FS_SERVICE)
+ set_bit(AFS_SERVER_FL_IS_YFS, &server->flags);
+ else
+ clear_bit(AFS_SERVER_FL_IS_YFS, &server->flags);
+
_leave(" = 0 [done]");
return 0;
}
@@ -2019,6 +2080,8 @@ int afs_fs_get_capabilities(struct afs_net *net,
return -ENOMEM;
call->key = key;
+ call->reply[0] = server;
+ call->upgrade = true;
/* marshall the parameters */
bp = call->request;
@@ -2054,8 +2117,7 @@ static int afs_deliver_fs_fetch_status(struct afs_call *call)
if (ret < 0)
return ret;
xdr_decode_AFSCallBack_raw(call, &bp, callback);
- if (volsync)
- xdr_decode_AFSVolSync(&bp, volsync);
+ xdr_decode_AFSVolSync(&bp, volsync);
_leave(" = 0 [done]");
return 0;
@@ -2084,6 +2146,9 @@ int afs_fs_fetch_status(struct afs_fs_cursor *fc,
struct afs_call *call;
__be32 *bp;
+ if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags))
+ return yfs_fs_fetch_status(fc, net, fid, status, callback, volsync);
+
_enter(",%x,{%llx:%llu},,",
key_serial(fc->key), fid->vid, fid->vnode);
@@ -2218,8 +2283,7 @@ static int afs_deliver_fs_inline_bulk_status(struct afs_call *call)
return ret;
bp = call->buffer;
- if (call->reply[3])
- xdr_decode_AFSVolSync(&bp, call->reply[3]);
+ xdr_decode_AFSVolSync(&bp, call->reply[3]);
call->unmarshall++;
@@ -2256,6 +2320,10 @@ int afs_fs_inline_bulk_status(struct afs_fs_cursor *fc,
__be32 *bp;
int i;
+ if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags))
+ return yfs_fs_inline_bulk_status(fc, net, fids, statuses, callbacks,
+ nr_fids, volsync);
+
_enter(",%x,{%llx:%llu},%u",
key_serial(fc->key), fids[0].vid, fids[1].vnode, nr_fids);