Commit 652df9a7 authored by Venkateswararao Jujjuri (JV)'s avatar Venkateswararao Jujjuri (JV) Committed by Eric Van Hensbergen
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9p: Define and implement TLINK for 9P2000.L 



This patch adds a helper function to get the dentry from inode and
uses it in creating a Hardlink

SYNOPSIS

size[4] Tlink tag[2] dfid[4] oldfid[4] newpath[s]

size[4] Rlink tag[2]

DESCRIPTION

Create a link 'newpath' in directory pointed by dfid linking to oldfid path.

[sripathik@in.ibm.com : p9_client_link should not free req structure
if p9_client_rpc has returned an error.]

Signed-off-by: default avatarVenkateswararao Jujjuri <jvrao@linux.vnet.ibm.com>
Signed-off-by: default avatarEric Van Hensbergen <ericvh@gmail.com>
parent 09d34ee5

include/net/9p/9p.h

+2 −0
Original line number Diff line number Diff line
@@ -139,6 +139,8 @@ enum p9_msg_t { 
	P9_RSETATTR,

	P9_TREADDIR = 40,

	P9_RREADDIR,

	P9_TLINK = 70,

	P9_RLINK,

	P9_TVERSION = 100,

	P9_RVERSION,

	P9_TAUTH = 102,

include/net/9p/client.h

+1 −0
Original line number Diff line number Diff line
@@ -226,6 +226,7 @@ struct p9_fid *p9_client_walk(struct p9_fid *oldfid, int nwname, char **wnames, 
int p9_client_open(struct p9_fid *fid, int mode);

int p9_client_fcreate(struct p9_fid *fid, char *name, u32 perm, int mode,

							char *extension);

int p9_client_link(struct p9_fid *fid, struct p9_fid *oldfid, char *newname);

int p9_client_clunk(struct p9_fid *fid);

int p9_client_remove(struct p9_fid *fid);

int p9_client_read(struct p9_fid *fid, char *data, char __user *udata,

net/9p/client.c

+19 −0
Original line number Diff line number Diff line
@@ -1095,6 +1095,25 @@ error: 
}

EXPORT_SYMBOL(p9_client_fcreate);



int p9_client_link(struct p9_fid *dfid, struct p9_fid *oldfid, char *newname)

{

	struct p9_client *clnt;

	struct p9_req_t *req;



	P9_DPRINTK(P9_DEBUG_9P, ">>> TLINK dfid %d oldfid %d newname %s\n",

			dfid->fid, oldfid->fid, newname);

	clnt = dfid->clnt;

	req = p9_client_rpc(clnt, P9_TLINK, "dds", dfid->fid, oldfid->fid,

			newname);

	if (IS_ERR(req))

		return PTR_ERR(req);



	P9_DPRINTK(P9_DEBUG_9P, "<<< RLINK\n");

	p9_free_req(clnt, req);

	return 0;

}

EXPORT_SYMBOL(p9_client_link);



int p9_client_clunk(struct p9_fid *fid)

{

	int err;

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