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/*
Copyright (c) 2012 Gluster, Inc. <http://www.gluster.com>
This file is part of GlusterFS.
This file is licensed to you under your choice of the GNU Lesser
General Public License, version 3 or any later version (LGPLv3 or
later), or the GNU General Public License, version 2 (GPLv2), in all
cases as published by the Free Software Foundation.
*/
#include "xdr-nfs3.h"
#include "logging.h"
#include "mem-pool.h"
#include "nfs-mem-types.h"
#include "nfs-messages.h"
#include "mount3.h"
#include <stdio.h>
#include <stdlib.h>
#include <rpc/pmap_clnt.h>
#include <string.h>
#include <memory.h>
#include <sys/socket.h>
#include <netinet/in.h>
extern struct nfs3_fh*
nfs3_rootfh (struct svc_req *req, xlator_t *nfsx, char *dp, char *expname);
extern mountres3
mnt3svc_set_mountres3 (mountstat3 stat, struct nfs3_fh *fh,
int *authflavor, u_int aflen);
extern int
mount3udp_add_mountlist (xlator_t *nfsx, char *host, char *expname);
extern int
mount3udp_delete_mountlist (xlator_t *nfsx, char *host, char *expname);
extern mountstat3
mnt3svc_errno_to_mnterr (int32_t errnum);
/* only this thread will use this, no locking needed */
char mnthost[INET_ADDRSTRLEN+1];
#define MNT3UDP_AUTH_LEN 1 /* Only AUTH_UNIX for now */
mountres3 *
mountudpproc3_mnt_3_svc(dirpath **dpp, struct svc_req *req)
{
struct mountres3 *res = NULL;
int *autharr = NULL;
struct nfs3_fh *fh = NULL;
char *mpath = NULL;
xlator_t *nfsx = THIS;
char expname[PATH_MAX] = {0, };
mountstat3 stat = MNT3ERR_SERVERFAULT;
errno = 0; /* RESET errno */
mpath = (char *)*dpp;
while (*mpath == '/')
mpath++;
res = GF_CALLOC (1, sizeof(*res), gf_nfs_mt_mountres3);
if (res == NULL) {
gf_msg (GF_MNT, GF_LOG_ERROR, ENOMEM, NFS_MSG_NO_MEMORY,
"Unable to allocate memory");
goto err;
}
autharr = GF_CALLOC (MNT3UDP_AUTH_LEN, sizeof(int), gf_nfs_mt_int);
if (autharr == NULL) {
gf_msg (GF_MNT, GF_LOG_ERROR, ENOMEM, NFS_MSG_NO_MEMORY,
"Unable to allocate memory");
goto err;
}
autharr[0] = AUTH_UNIX;
fh = nfs3_rootfh (req, nfsx, mpath, (char *)expname);
/* FAILURE: No FH */
if (fh == NULL) {
gf_msg (GF_MNT, GF_LOG_ERROR, errno, NFS_MSG_GET_FH_FAIL,
"Unable to get fh for %s", mpath);
if (errno)
stat = mnt3svc_errno_to_mnterr (errno);
*res = mnt3svc_set_mountres3 (stat, NULL /* fh */,
autharr, MNT3UDP_AUTH_LEN);
return res;
}
/* SUCCESS */
stat = MNT3_OK;
*res = mnt3svc_set_mountres3 (stat, fh, autharr, MNT3UDP_AUTH_LEN);
(void) mount3udp_add_mountlist (nfsx, mnthost, (char *) expname);
return res;
err:
GF_FREE (fh);
GF_FREE (res);
GF_FREE (autharr);
return NULL;
}
mountstat3 *
mountudpproc3_umnt_3_svc(dirpath **dp, struct svc_req *req)
{
mountstat3 *stat = NULL;
char *mpath = (char *) *dp;
xlator_t *nfsx = THIS;
stat = GF_CALLOC (1, sizeof(mountstat3), gf_nfs_mt_mountstat3);
if (stat == NULL) {
gf_msg (GF_MNT, GF_LOG_ERROR, ENOMEM, NFS_MSG_NO_MEMORY,
"Unable to allocate memory");
return NULL;
}
*stat = MNT3_OK;
(void) mount3udp_delete_mountlist (nfsx, mnthost, mpath);
return stat;
}
static void
mountudp_program_3(struct svc_req *rqstp, register SVCXPRT *transp)
{
union {
dirpath mountudpproc3_mnt_3_arg;
} argument;
char *result = NULL;
xdrproc_t _xdr_argument = NULL, _xdr_result = NULL;
char *(*local)(char *, struct svc_req *) = NULL;
mountres3 *res = NULL;
struct sockaddr_in *sin = NULL;
sin = svc_getcaller (transp);
inet_ntop (AF_INET, &sin->sin_addr, mnthost, INET_ADDRSTRLEN+1);
switch (rqstp->rq_proc) {
case NULLPROC:
(void) svc_sendreply (transp, (xdrproc_t) xdr_void,
(char *)NULL);
return;
case MOUNT3_MNT:
_xdr_argument = (xdrproc_t) xdr_dirpath;
_xdr_result = (xdrproc_t) xdr_mountres3;
local = (char *(*)(char *,
struct svc_req *)) mountudpproc3_mnt_3_svc;
break;
case MOUNT3_UMNT:
_xdr_argument = (xdrproc_t) xdr_dirpath;
_xdr_result = (xdrproc_t) xdr_mountstat3;
local = (char *(*)(char *,
struct svc_req *)) mountudpproc3_umnt_3_svc;
break;
default:
svcerr_noproc (transp);
return;
}
memset ((char *)&argument, 0, sizeof (argument));
if (!svc_getargs (transp, (xdrproc_t) _xdr_argument,
(caddr_t) &argument)) {
svcerr_decode (transp);
return;
}
result = (*local)((char *)&argument, rqstp);
if (result == NULL) {
gf_msg_debug (GF_MNT, 0, "PROC returned error");
svcerr_systemerr (transp);
}
if (result != NULL && !svc_sendreply(transp, (xdrproc_t) _xdr_result,
result)) {
gf_msg (GF_MNT, GF_LOG_ERROR, 0, NFS_MSG_SVC_ERROR,
"svc_sendreply returned error");
svcerr_systemerr (transp);
}
if (!svc_freeargs (transp, (xdrproc_t) _xdr_argument,
(caddr_t) &argument)) {
gf_msg (GF_MNT, GF_LOG_ERROR, 0, NFS_MSG_ARG_FREE_FAIL,
"Unable to free arguments");
}
if (result == NULL)
return;
/* free the result */
switch (rqstp->rq_proc) {
case MOUNT3_MNT:
res = (mountres3 *) result;
GF_FREE (res->mountres3_u.mountinfo.fhandle.fhandle3_val);
GF_FREE (res->mountres3_u.mountinfo.auth_flavors.auth_flavors_val);
GF_FREE (res);
break;
case MOUNT3_UMNT:
GF_FREE (result);
break;
}
return;
}
void *
mount3udp_thread (void *argv)
{
xlator_t *nfsx = argv;
register SVCXPRT *transp = NULL;
GF_ASSERT (nfsx);
if (glusterfs_this_set(nfsx)) {
gf_msg (GF_MNT, GF_LOG_ERROR, ENOMEM, NFS_MSG_XLATOR_SET_FAIL,
"Failed to set xlator, nfs.mount-udp will not work");
return NULL;
}
transp = svcudp_create(RPC_ANYSOCK);
if (transp == NULL) {
gf_msg (GF_MNT, GF_LOG_ERROR, 0, NFS_MSG_SVC_ERROR,
"svcudp_create error");
return NULL;
}
if (!svc_register(transp, MOUNT_PROGRAM, MOUNT_V3,
mountudp_program_3, IPPROTO_UDP)) {
gf_msg (GF_MNT, GF_LOG_ERROR, 0, NFS_MSG_SVC_ERROR,
"svc_register error");
return NULL;
}
svc_run ();
gf_msg (GF_MNT, GF_LOG_ERROR, 0, NFS_MSG_SVC_RUN_RETURNED,
"svc_run returned");
return NULL;
}
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