2 Copyright (C) by Ronnie Sahlberg <ronniesahlberg@gmail.com> 2011
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 3 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, see <http://www.gnu.org/licenses/>.
18 /* Example program using the lowlevel raw broadcast interface.
28 #include <sys/socket.h>
29 #include <sys/ioctl.h>
34 #include "libnfs-raw.h"
35 #include "libnfs-private.h"
36 #include "libnfs-raw-mount.h"
37 #include "libnfs-raw-portmap.h"
39 struct nfs_list_data
{
41 struct nfs_server_list
*srvrs
;
44 void free_nfs_srvr_list(struct nfs_server_list
*srv
)
47 struct nfs_server_list
*next
= srv
->next
;
55 void pm_cb(struct rpc_context
*rpc
, int status
, void *data _U_
, void *private_data
)
57 struct nfs_list_data
*srv_data
= private_data
;
60 struct nfs_server_list
*srvr
;
62 if (status
== RPC_STATUS_CANCEL
) {
66 srv_data
->status
= -1;
70 sin
= rpc_get_recv_sockaddr(rpc
);
72 rpc_set_error(rpc
, "failed to get sockaddr in CALLIT callback");
73 srv_data
->status
= -1;
77 if (getnameinfo(sin
, sizeof(struct sockaddr_in
), &hostdd
[0], sizeof(hostdd
), NULL
, 0, NI_NUMERICHOST
) < 0) {
78 rpc_set_error(rpc
, "getnameinfo failed in CALLIT callback");
79 srv_data
->status
= -1;
84 srvr
= malloc(sizeof(struct nfs_server_list
));
86 rpc_set_error(rpc
, "Malloc failed when allocating server structure");
87 srv_data
->status
= -1;
91 srvr
->addr
= strdup(hostdd
);
92 if (srvr
->addr
== NULL
) {
93 rpc_set_error(rpc
, "Strdup failed when allocating server structure");
95 srv_data
->status
= -1;
99 srvr
->next
= srv_data
->srvrs
;
100 srv_data
->srvrs
= srvr
;
103 int main(int argc _U_
, char *argv
[] _U_
)
105 struct rpc_context
*rpc
;
109 struct timeval tv_start
, tv_current
;
110 struct nfs_list_data data
= {0, NULL
};
111 struct nfs_server_list
*srvr
;
114 rpc
= rpc_init_udp_context();
116 printf("failed to init context\n");
120 if (rpc_bind_udp(rpc
, "0.0.0.0", 0) < 0) {
121 printf("failed to bind to udp %s\n", rpc_get_error(rpc
));
126 /* get list of all interfaces */
127 size
= sizeof(struct ifreq
);
131 while (ifc
.ifc_len
== size
) {
136 ifc
.ifc_buf
= malloc(size
);
137 memset(ifc
.ifc_buf
, 0, size
);
138 if (ioctl(rpc_get_fd(rpc
), SIOCGIFCONF
, (caddr_t
)&ifc
) < 0) {
139 printf("ioctl SIOCGIFCONF failed\n");
144 for (ptr
=(char *)ifc
.ifc_buf
; ptr
< ((char *)ifc
.ifc_buf
) + ifc
.ifc_len
; ) {
148 ifr
= (struct ifreq
*)ptr
;
149 #ifdef HAVE_SOCKADDR_LEN
150 if (ifr
->ifr_addr
.sa_len
> sizeof(struct sockaddr
)) {
151 ptr
+= sizeof(ifr
->ifr_name
) + ifr
->ifr_addr
.sa_len
;
153 ptr
+= sizeof(ifr
->ifr_name
) + sizeof(struct sockaddr
);
156 ptr
+= sizeof(struct ifreq
);
159 if (ifr
->ifr_addr
.sa_family
!= AF_INET
) {
162 if (ioctl(rpc_get_fd(rpc
), SIOCGIFFLAGS
, ifr
) < 0) {
163 printf("ioctl DRBADDR failed\n");
166 if (!(ifr
->ifr_flags
& IFF_UP
)) {
169 if (ifr
->ifr_flags
& IFF_LOOPBACK
) {
172 if (!(ifr
->ifr_flags
& IFF_BROADCAST
)) {
175 if (ioctl(rpc_get_fd(rpc
), SIOCGIFBRDADDR
, ifr
) < 0) {
178 if (getnameinfo(&ifr
->ifr_broadaddr
, sizeof(struct sockaddr_in
), &bcdd
[0], sizeof(bcdd
), NULL
, 0, NI_NUMERICHOST
) < 0) {
181 if (rpc_set_udp_destination(rpc
, bcdd
, 111, 1) < 0) {
182 printf("failed to set udp destination %s\n", rpc_get_error(rpc
));
186 if (rpc_pmap_callit_async(rpc
, MOUNT_PROGRAM
, 2, 0, NULL
, 0, pm_cb
, &data
) < 0) {
187 printf("Failed to set up callit function\n");
193 gettimeofday(&tv_start
, NULL
);
197 pfd
.fd
= rpc_get_fd(rpc
);
198 pfd
.events
= rpc_which_events(rpc
);
200 gettimeofday(&tv_current
, NULL
);
202 - (tv_current
.tv_sec
*1000 + tv_current
.tv_usec
/ 1000)
203 + (tv_start
.tv_sec
*1000 + tv_start
.tv_usec
/ 1000);
205 if (poll(&pfd
, 1, mpt
) < 0) {
206 printf("Poll failed");
209 if (pfd
.revents
== 0) {
213 if (rpc_service(rpc
, pfd
.revents
) < 0) {
214 printf("rpc_service failed with %s\n", rpc_get_error(rpc
));
219 for (srvr
=data
.srvrs
; srvr
; srvr
= srvr
->next
) {
220 printf("NFS SERVER @ %s\n", srvr
->addr
);
222 free_nfs_srvr_list(data
.srvrs
);
224 rpc_destroy_context(rpc
);