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/*
* nfsd
*
* This is the user level part of nfsd. This is very primitive, because
* all the work is now done in the kernel module.
*
* Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <errno.h>
#include <getopt.h>
#include <syslog.h>
#include <netdb.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include "nfslib.h"
static void usage(const char *);
static struct option longopts[] =
{
{ "host", 1, 0, 'H' },
{ "help", 0, 0, 'h' },
{ "no-nfs-version", 1, 0, 'N' },
{ "no-tcp", 0, 0, 'T' },
{ "no-udp", 0, 0, 'U' },
{ "port", 1, 0, 'P' },
{ "port", 1, 0, 'p' },
{ NULL, 0, 0, 0 }
};
unsigned int protobits = NFSCTL_ALLBITS;
unsigned int versbits = NFSCTL_ALLBITS;
int minorvers4; /* nfsv4 minor version */
char *haddr = NULL;
int
main(int argc, char **argv)
{
int count = 1, c, error, port, fd, found_one;
struct servent *ent;
struct hostent *hp;
ent = getservbyname ("nfs", "udp");
if (ent != NULL)
port = ntohs (ent->s_port);
else
port = 2049;
while ((c = getopt_long(argc, argv, "H:hN:p:P:TU", longopts, NULL)) != EOF) {
switch(c) {
case 'H':
if (inet_addr(optarg) != INADDR_NONE) {
haddr = strdup(optarg);
} else if ((hp = gethostbyname(optarg)) != NULL) {
haddr = inet_ntoa((*(struct in_addr*)(hp->h_addr_list[0])));
} else {
fprintf(stderr, "%s: Unknown hostname: %s\n",
argv[0], optarg);
usage(argv [0]);
}
break;
case 'P': /* XXX for nfs-server compatibility */
case 'p':
port = atoi(optarg);
if (port <= 0 || port > 65535) {
fprintf(stderr, "%s: bad port number: %s\n",
argv[0], optarg);
usage(argv [0]);
}
break;
case 'N':
switch((c = atoi(optarg))) {
case 2:
case 3:
case 4:
NFSCTL_VERUNSET(versbits, c);
break;
default:
fprintf(stderr, "%s: Unsupported version\n", optarg);
exit(1);
}
break;
case 'T':
NFSCTL_TCPUNSET(protobits);
break;
case 'U':
NFSCTL_UDPUNSET(protobits);
break;
default:
fprintf(stderr, "Invalid argument: '%c'\n", c);
case 'h':
usage(argv[0]);
}
}
/*
* Do some sanity checking, if the ctlbits are set
*/
if (!NFSCTL_UDPISSET(protobits) && !NFSCTL_TCPISSET(protobits)) {
fprintf(stderr, "invalid protocol specified\n");
exit(1);
}
found_one = 0;
for (c = NFSD_MINVERS; c <= NFSD_MAXVERS; c++) {
if (NFSCTL_VERISSET(versbits, c))
found_one = 1;
}
if (!found_one) {
fprintf(stderr, "no version specified\n");
exit(1);
}
if (NFSCTL_VERISSET(versbits, 4) && !NFSCTL_TCPISSET(protobits)) {
fprintf(stderr, "version 4 requires the TCP protocol\n");
exit(1);
}
if (haddr == NULL) {
struct in_addr in = {INADDR_ANY};
haddr = strdup(inet_ntoa(in));
}
if (chdir(NFS_STATEDIR)) {
fprintf(stderr, "%s: chdir(%s) failed: %s\n",
argv [0], NFS_STATEDIR, strerror(errno));
exit(1);
}
if (optind < argc) {
if ((count = atoi(argv[optind])) < 0) {
/* insane # of servers */
fprintf(stderr,
"%s: invalid server count (%d), using 1\n",
argv[0], count);
count = 1;
}
}
/* KLUDGE ALERT:
Some kernels let nfsd kernel threads inherit open files
from the program that spawns them (i.e. us). So close
everything before spawning kernel threads. --Chip */
fd = open("/dev/null", O_RDWR);
if (fd == -1)
perror("/dev/null");
else {
(void) dup2(fd, 0);
(void) dup2(fd, 1);
(void) dup2(fd, 2);
}
closeall(3);
openlog("nfsd", LOG_PID, LOG_DAEMON);
if ((error = nfssvc(port, count, versbits, minorvers4, protobits, haddr)) < 0) {
int e = errno;
syslog(LOG_ERR, "nfssvc: %s", strerror(e));
closelog();
}
return (error != 0);
}
static void
usage(const char *prog)
{
fprintf(stderr, "Usage:\n"
"%s [-H hostname] [-p|-P|--port port] [-N|--no-nfs-version version ] [-T|--no-tcp] [-U|--no-udp] nrservs\n",
prog);
exit(2);
}
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