X-Git-Url: https://git.decadent.org.uk/gitweb/?p=nfs-utils.git;a=blobdiff_plain;f=utils%2Fnfsd%2Fnfsd.c;h=aaf8d298e3ad9c589c1d0d0c31df7cd64d36da27;hp=3a22370a27540c81979656e7fcf97dde85c4ca55;hb=e64f7f6b73cfc80662cf5f724f3c1eb86a392883;hpb=8b7ad01b14df1e7529b9ba8a1ea17df0d6004ef9

diff --git a/utils/nfsd/nfsd.c b/utils/nfsd/nfsd.c
index 3a22370..aaf8d29 100644
--- a/utils/nfsd/nfsd.c
+++ b/utils/nfsd/nfsd.c
@@ -7,26 +7,68 @@
  * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
  */
 
-#include "config.h"
+#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;
+char *haddr = NULL;
+
 int
 main(int argc, char **argv)
 {
-	int	count = 1, c, error, port;
+	int	count = 1, c, error, port, fd, found_one;
+	struct servent *ent;
+	struct hostent *hp;
 
-	port = 2049;
+	ent = getservbyname ("nfs", "udp");
+	if (ent != NULL)
+		port = ntohs (ent->s_port);
+	else
+		port = 2049;
 
-	/* FIXME: Check for nfs in /etc/services */
-
-	while ((c = getopt(argc, argv, "hp:P:")) != EOF) {
+	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);
@@ -36,12 +78,61 @@ main(int argc, char **argv)
 				usage(argv [0]);
 			}
 			break;
+		case 'N':
+			switch((c = atoi(optarg))) {
+			case 2:
+			case 3:
+			case 4:
+				NFSCTL_VERUNSET(versbits, c);
+				break;
+			default:
+				fprintf(stderr, "%c: Unsupported version\n", c);
+				exit(1);
+			}
 			break;
-		case 'h':
+		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) {
@@ -52,9 +143,26 @@ main(int argc, char **argv)
 			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);
 
-	if ((error = nfssvc(port, count)) < 0)
-		perror("nfssvc");
+	openlog("nfsd", LOG_PID, LOG_DAEMON);
+	if ((error = nfssvc(port, count, versbits, protobits, haddr)) < 0) {
+		int e = errno;
+		syslog(LOG_ERR, "nfssvc: %s", strerror(e));
+		closelog();
+	}
 
 	return (error != 0);
 }
@@ -62,7 +170,8 @@ main(int argc, char **argv)
 static void
 usage(const char *prog)
 {
-	fprintf(stderr, "usage:\n"
-			"%s nrservs\n", 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);
 }