static unsigned int add_tile(unsigned int i, int x, int y, int w, int h)
{
int j = 0;
if ((chk_host(i)) && (j = new_tile()))
{
/* Set a default display configuration. */
tile[j] = default_tile;
/* The rectangle defines viewport size and default ortho projection. */
tile[j].pix_x = tile[j].win_x = x;
tile[j].pix_y = tile[j].win_y = y;
tile[j].pix_w = tile[j].win_w = w;
tile[j].pix_h = tile[j].win_h = h;
/* Include this tile in the host and in the total display. */
host[i].tile[host[i].n++] = j;
bound_display();
}
return j;
}
/*
* The mount rpc service
*/
void
mntsrv(struct svc_req *rqstp, SVCXPRT *transp)
{
char rpcpath[RPCMNT_PATHLEN+1], dirpath[MAXPATHLEN];
struct hostent *hp = NULL;
struct exportlist *ep;
sigset_t sighup_mask;
int defset, hostset;
struct fhreturn fhr;
struct dirlist *dp;
struct statfs fsb;
struct stat stb;
in_addr_t saddr;
u_short sport;
long bad = 0;
sigemptyset(&sighup_mask);
sigaddset(&sighup_mask, SIGHUP);
saddr = transp->xp_raddr.sin_addr.s_addr;
sport = ntohs(transp->xp_raddr.sin_port);
switch (rqstp->rq_proc) {
case NULLPROC:
if (!svc_sendreply(transp, xdr_void, NULL))
syslog(LOG_ERR, "Can't send reply");
return;
case RPCMNT_MOUNT:
if (debug)
fprintf(stderr, "Got mount request from %s\n",
inet_ntoa(transp->xp_raddr.sin_addr));
if (sport >= IPPORT_RESERVED && resvport_only) {
syslog(LOG_NOTICE,
"Refused mount RPC from host %s port %d",
inet_ntoa(transp->xp_raddr.sin_addr), sport);
svcerr_weakauth(transp);
return;
}
if (!svc_getargs(transp, xdr_dir, rpcpath)) {
svcerr_decode(transp);
return;
}
if (debug)
fprintf(stderr, "rpcpath: %s\n", rpcpath);
/*
* Get the real pathname and make sure it is a file or
* directory that exists.
*/
if (realpath(rpcpath, dirpath) == NULL) {
bad = errno;
if (debug)
fprintf(stderr, "realpath failed on %s\n",
rpcpath);
strlcpy(dirpath, rpcpath, sizeof(dirpath));
} else if (stat(dirpath, &stb) < 0 ||
(!S_ISDIR(stb.st_mode) && !S_ISREG(stb.st_mode)) ||
statfs(dirpath, &fsb) < 0) {
if (debug)
fprintf(stderr, "stat failed on %s\n", dirpath);
bad = ENOENT; /* We will send error reply later */
}
/* Check in the exports list */
sigprocmask(SIG_BLOCK, &sighup_mask, NULL);
ep = ex_search(&fsb.f_fsid);
hostset = defset = 0;
if (ep && (chk_host(ep->ex_defdir, saddr, &defset, &hostset) ||
((dp = dirp_search(ep->ex_dirl, dirpath)) &&
chk_host(dp, saddr, &defset, &hostset)) ||
(defset && scan_tree(ep->ex_defdir, saddr) == 0 &&
scan_tree(ep->ex_dirl, saddr) == 0))) {
if (bad) {
if (!svc_sendreply(transp, xdr_long,
(caddr_t)&bad))
syslog(LOG_ERR, "Can't send reply");
sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
return;
}
if (hostset & DP_HOSTSET)
fhr.fhr_flag = hostset;
else
fhr.fhr_flag = defset;
fhr.fhr_vers = rqstp->rq_vers;
/* Get the file handle */
memset(&fhr.fhr_fh, 0, sizeof(nfsfh_t));
if (getfh(dirpath, (fhandle_t *)&fhr.fhr_fh) < 0) {
if (errno == ENOSYS) {
syslog(LOG_ERR,
"Kernel does not support NFS exporting, "
"mountd aborting..");
_exit(1);
}
bad = errno;
syslog(LOG_ERR, "Can't get fh for %s", dirpath);
if (!svc_sendreply(transp, xdr_long,
(caddr_t)&bad))
syslog(LOG_ERR, "Can't send reply");
sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
return;
}
if (!svc_sendreply(transp, xdr_fhs, (caddr_t)&fhr))
syslog(LOG_ERR, "Can't send reply");
if (hp == NULL)
hp = gethostbyaddr((caddr_t)&saddr,
sizeof(saddr), AF_INET);
if (hp)
add_mlist(hp->h_name, dirpath);
else
add_mlist(inet_ntoa(transp->xp_raddr.sin_addr),
dirpath);
if (debug) {
fprintf(stderr,
"Mount successful for %s by %s.\n",
dirpath,
inet_ntoa(transp->xp_raddr.sin_addr));
}
} else
bad = EACCES;
if (bad && !svc_sendreply(transp, xdr_long, (caddr_t)&bad))
syslog(LOG_ERR, "Can't send reply");
sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
return;
case RPCMNT_DUMP:
if (!svc_sendreply(transp, xdr_mlist, NULL))
syslog(LOG_ERR, "Can't send reply");
return;
case RPCMNT_UMOUNT:
if (sport >= IPPORT_RESERVED && resvport_only) {
svcerr_weakauth(transp);
return;
}
if (!svc_getargs(transp, xdr_dir, dirpath)) {
svcerr_decode(transp);
return;
}
if (!svc_sendreply(transp, xdr_void, NULL))
syslog(LOG_ERR, "Can't send reply");
hp = gethostbyaddr((caddr_t)&saddr, sizeof(saddr), AF_INET);
if (hp)
del_mlist(hp->h_name, dirpath);
del_mlist(inet_ntoa(transp->xp_raddr.sin_addr), dirpath);
return;
case RPCMNT_UMNTALL:
if (sport >= IPPORT_RESERVED && resvport_only) {
svcerr_weakauth(transp);
return;
}
if (!svc_sendreply(transp, xdr_void, NULL))
syslog(LOG_ERR, "Can't send reply");
hp = gethostbyaddr((caddr_t)&saddr, sizeof(saddr), AF_INET);
if (hp)
del_mlist(hp->h_name, NULL);
del_mlist(inet_ntoa(transp->xp_raddr.sin_addr), NULL);
return;
case RPCMNT_EXPORT:
if (!svc_sendreply(transp, xdr_explist, NULL))
syslog(LOG_ERR, "Can't send reply");
return;
default:
svcerr_noproc(transp);
return;
}
}
