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authorSripathi Kodi <sripathik@in.ibm.com>2010-03-25 12:45:30 +0000
committerEric Van Hensbergen <ericvh@gmail.com>2010-05-21 16:44:33 -0500
commitbda8e7752063cdbdd1d308bc1705400a8cec1aeb (patch)
treecfc751da04d3ffe46d7b7e935f7ceb21b1f8a8d0 /net
parent9b6533c9b331ddbba9a40c972d82222ecffbc359 (diff)
downloadop-kernel-dev-bda8e7752063cdbdd1d308bc1705400a8cec1aeb.zip
op-kernel-dev-bda8e7752063cdbdd1d308bc1705400a8cec1aeb.tar.gz
9p: add 9P2000.L statfs operation
I made a V2 of this patch on top of my patches for VFS switches. The change was adding v9fs_statfs pointer to v9fs_super_ops_dotl instead of v9fs_super_ops. statfs - get file system statistics size[4] Tstatfs tag[2] fid[4] size[4] Rstatfs tag[2] type[4] bsize[4] blocks[8] bfree[8] bavail[8] files[8] ffree[8] fsid[8] namelen[4] The statfs message is used to request file system information returned by the statfs(2) system call, which is used by df(1) to report file system and disk space usage. Signed-off-by: Jim Garlick <garlick@llnl.gov> Signed-off-by: Sripathi Kodi <sripathik@in.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
Diffstat (limited to 'net')
-rw-r--r--net/9p/client.c39
1 files changed, 39 insertions, 0 deletions
diff --git a/net/9p/client.c b/net/9p/client.c
index e2d3146..430a1c4 100644
--- a/net/9p/client.c
+++ b/net/9p/client.c
@@ -1365,3 +1365,42 @@ error:
return err;
}
EXPORT_SYMBOL(p9_client_wstat);
+
+int p9_client_statfs(struct p9_fid *fid, struct p9_rstatfs *sb)
+{
+ int err;
+ struct p9_req_t *req;
+ struct p9_client *clnt;
+
+ err = 0;
+ clnt = fid->clnt;
+
+ P9_DPRINTK(P9_DEBUG_9P, ">>> TSTATFS fid %d\n", fid->fid);
+
+ req = p9_client_rpc(clnt, P9_TSTATFS, "d", fid->fid);
+ if (IS_ERR(req)) {
+ err = PTR_ERR(req);
+ goto error;
+ }
+
+ err = p9pdu_readf(req->rc, clnt->proto_version, "ddqqqqqqd", &sb->type,
+ &sb->bsize, &sb->blocks, &sb->bfree, &sb->bavail,
+ &sb->files, &sb->ffree, &sb->fsid, &sb->namelen);
+ if (err) {
+ p9pdu_dump(1, req->rc);
+ p9_free_req(clnt, req);
+ goto error;
+ }
+
+ P9_DPRINTK(P9_DEBUG_9P, "<<< RSTATFS fid %d type 0x%lx bsize %ld "
+ "blocks %llu bfree %llu bavail %llu files %llu ffree %llu "
+ "fsid %llu namelen %ld\n",
+ fid->fid, (long unsigned int)sb->type, (long int)sb->bsize,
+ sb->blocks, sb->bfree, sb->bavail, sb->files, sb->ffree,
+ sb->fsid, (long int)sb->namelen);
+
+ p9_free_req(clnt, req);
+error:
+ return err;
+}
+EXPORT_SYMBOL(p9_client_statfs);
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