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9p: Implement LOPEN

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Implement 9p2000.L version of open(LOPEN) interface in 9p client.

For LOPEN, no need to convert the flags to and from 9p mode to VFS mode.

Synopsis:

    size[4] Tlopen tag[2] fid[4] mode[4]

    size[4] Rlopen tag[2] qid[13] iounit[4]

[Fix mode bit format - jvrao@linux.vnet.ibm.com]

Signed-off-by: M. Mohan Kumar <mohan@in.ibm.com>
Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com>
Signed-off-by: Eric Van Hensbegren <ericvh@gmail.com>
This commit is contained in:
M. Mohan Kumar
2010-06-22 19:47:50 +05:30
committed by Eric Van Hensbergen
parent 5643135a28
commit ef56547efa
3 changed files with 21 additions and 11 deletions
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17
net/9p/client.c
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@@ -1016,14 +1016,18 @@ int p9_client_open(struct p9_fid *fid, int mode)
struct p9_qid qid;
int iounit;
P9_DPRINTK(P9_DEBUG_9P, ">>> TOPEN fid %d mode %d\n", fid->fid, mode);
err = 0;
clnt = fid->clnt;
P9_DPRINTK(P9_DEBUG_9P, ">>> %s fid %d mode %d\n",
p9_is_proto_dotl(clnt) ? "TLOPEN" : "TOPEN", fid->fid, mode);
err = 0;
if (fid->mode != -1)
return -EINVAL;
req = p9_client_rpc(clnt, P9_TOPEN, "db", fid->fid, mode);
if (p9_is_proto_dotl(clnt))
req = p9_client_rpc(clnt, P9_TLOPEN, "dd", fid->fid, mode);
else
req = p9_client_rpc(clnt, P9_TOPEN, "db", fid->fid, mode);
if (IS_ERR(req)) {
err = PTR_ERR(req);
goto error;
@@ -1035,10 +1039,9 @@ int p9_client_open(struct p9_fid *fid, int mode)
goto free_and_error;
}
P9_DPRINTK(P9_DEBUG_9P, "<<< ROPEN qid %x.%llx.%x iounit %x\n",
qid.type,
(unsigned long long)qid.path,
qid.version, iounit);
P9_DPRINTK(P9_DEBUG_9P, "<<< %s qid %x.%llx.%x iounit %x\n",
p9_is_proto_dotl(clnt) ? "RLOPEN" : "ROPEN", qid.type,
(unsigned long long)qid.path, qid.version, iounit);
fid->mode = mode;
fid->iounit = iounit;