#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"
+#include "nfssvc.h"
+#include "xlog.h"
+
+/*
+ * IPv6 support for nfsd was finished before some of the other daemons (mountd
+ * and statd in particular). That could be a problem in the future if someone
+ * were to boot a kernel that supports IPv6 serving with an older nfs-utils. For
+ * now, hardcode the IPv6 switch into the off position until the other daemons
+ * are functional.
+ */
+#undef IPV6_SUPPORTED
static void usage(const char *);
{ "no-udp", 0, 0, 'U' },
{ "port", 1, 0, 'P' },
{ "port", 1, 0, 'p' },
+ { "debug", 0, 0, 'd' },
+ { "syslog", 0, 0, 's' },
{ NULL, 0, 0, 0 }
};
-unsigned int protobits = NFSCTL_ALLBITS;
-unsigned int versbits = NFSCTL_ALLBITS;
-char *haddr = NULL;
+
+/* given a family and ctlbits, disable any that aren't listed in netconfig */
+#ifdef HAVE_LIBTIRPC
+static void
+nfsd_enable_protos(unsigned int *proto4, unsigned int *proto6)
+{
+ struct netconfig *nconf;
+ unsigned int *famproto;
+ void *handle;
+
+ xlog(D_GENERAL, "Checking netconfig for visible protocols.");
+
+ handle = setnetconfig();
+ while((nconf = getnetconfig(handle))) {
+ if (!(nconf->nc_flag & NC_VISIBLE))
+ continue;
+
+ if (!strcmp(nconf->nc_protofmly, NC_INET))
+ famproto = proto4;
+ else if (!strcmp(nconf->nc_protofmly, NC_INET6))
+ famproto = proto6;
+ else
+ continue;
+
+ if (!strcmp(nconf->nc_proto, NC_TCP))
+ NFSCTL_TCPSET(*famproto);
+ else if (!strcmp(nconf->nc_proto, NC_UDP))
+ NFSCTL_UDPSET(*famproto);
+
+ xlog(D_GENERAL, "Enabling %s %s.", nconf->nc_protofmly,
+ nconf->nc_proto);
+ }
+ endnetconfig(handle);
+ return;
+}
+#else /* HAVE_LIBTIRPC */
+static void
+nfsd_enable_protos(unsigned int *proto4, unsigned int *proto6)
+{
+ /* Enable all IPv4 protocols if no TIRPC support */
+ *proto4 = NFSCTL_ALLBITS;
+ *proto6 = 0;
+}
+#endif /* HAVE_LIBTIRPC */
int
main(int argc, char **argv)
{
- int count = 1, c, error, port, fd, found_one;
- struct servent *ent;
- struct hostent *hp;
+ int count = 1, c, error = 0, portnum = 0, fd, found_one;
+ char *p, *progname, *port;
+ char *haddr = NULL;
+ int socket_up = 0;
+ int minorvers4 = NFSD_MAXMINORVERS4; /* nfsv4 minor version */
+ unsigned int versbits = NFSCTL_ALLBITS;
+ unsigned int protobits = NFSCTL_ALLBITS;
+ unsigned int proto4 = 0;
+ unsigned int proto6 = 0;
+
+ progname = strdup(basename(argv[0]));
+ if (!progname) {
+ fprintf(stderr, "%s: unable to allocate memory.\n", argv[0]);
+ exit(1);
+ }
- ent = getservbyname ("nfs", "udp");
- if (ent != NULL)
- port = ntohs (ent->s_port);
- else
- port = 2049;
+ port = strdup("nfs");
+ if (!port) {
+ fprintf(stderr, "%s: unable to allocate memory.\n", progname);
+ exit(1);
+ }
+
+ xlog_syslog(0);
+ xlog_stderr(1);
- while ((c = getopt_long(argc, argv, "H:hN:p:P:TU", longopts, NULL)) != EOF) {
+ while ((c = getopt_long(argc, argv, "dH:hN:p:P:sTU", longopts, NULL)) != EOF) {
switch(c) {
+ case 'd':
+ xlog_config(D_ALL, 1);
+ break;
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]);
+ /*
+ * for now, this only handles one -H option. Use the
+ * last one specified.
+ */
+ free(haddr);
+ haddr = strdup(optarg);
+ if (!haddr) {
+ fprintf(stderr, "%s: unable to allocate "
+ "memory.\n", progname);
+ exit(1);
}
break;
case 'P': /* XXX for nfs-server compatibility */
case 'p':
- port = atoi(optarg);
- if (port <= 0 || port > 65535) {
+ /* only the last -p option has any effect */
+ portnum = atoi(optarg);
+ if (portnum <= 0 || portnum > 65535) {
fprintf(stderr, "%s: bad port number: %s\n",
- argv[0], optarg);
- usage(argv [0]);
+ progname, optarg);
+ usage(progname);
+ }
+ free(port);
+ port = strdup(optarg);
+ if (!port) {
+ fprintf(stderr, "%s: unable to allocate "
+ "memory.\n", progname);
+ exit(1);
}
break;
case 'N':
- switch((c = atoi(optarg))) {
- case 2:
- case 3:
+ switch((c = strtol(optarg, &p, 0))) {
case 4:
+ if (*p == '.') {
+ minorvers4 = -atoi(p + 1);
+ break;
+ }
+ case 3:
+ case 2:
NFSCTL_VERUNSET(versbits, c);
break;
default:
- fprintf(stderr, "%c: Unsupported version\n", c);
+ fprintf(stderr, "%s: Unsupported version\n", optarg);
exit(1);
}
break;
+ case 's':
+ xlog_syslog(1);
+ xlog_stderr(0);
+ break;
case 'T':
- NFSCTL_TCPUNSET(protobits);
- break;
+ NFSCTL_TCPUNSET(protobits);
+ break;
case 'U':
- NFSCTL_UDPUNSET(protobits);
- break;
+ NFSCTL_UDPUNSET(protobits);
+ break;
default:
fprintf(stderr, "Invalid argument: '%c'\n", c);
case 'h':
- usage(argv[0]);
+ usage(progname);
}
}
- /*
- * Do some sanity checking, if the ctlbits are set
- */
- if (!NFSCTL_UDPISSET(protobits) && !NFSCTL_TCPISSET(protobits)) {
- fprintf(stderr, "invalid protocol specified\n");
- 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;
+ } else if (count == 0) {
+ /*
+ * don't bother setting anything else if the threads
+ * are coming down anyway.
+ */
+ socket_up = 1;
+ goto set_threads;
+ }
}
+
+ xlog_open(progname);
+
+ nfsd_enable_protos(&proto4, &proto6);
+
+ if (!NFSCTL_TCPISSET(protobits)) {
+ NFSCTL_TCPUNSET(proto4);
+ NFSCTL_TCPUNSET(proto6);
+ }
+
+ if (!NFSCTL_UDPISSET(protobits)) {
+ NFSCTL_UDPUNSET(proto4);
+ NFSCTL_UDPUNSET(proto6);
+ }
+
+ /* make sure that at least one version is enabled */
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");
+ xlog(L_ERROR, "no version specified");
exit(1);
}
- if (NFSCTL_VERISSET(versbits, 4) && !NFSCTL_TCPISSET(versbits)) {
- fprintf(stderr, "version 4 requires the TCP protocol\n");
+
+ if (NFSCTL_VERISSET(versbits, 4) &&
+ !NFSCTL_TCPISSET(proto4) &&
+ !NFSCTL_TCPISSET(proto6)) {
+ xlog(L_ERROR, "version 4 requires the TCP protocol");
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));
+ xlog(L_ERROR, "chdir(%s) failed: %m", NFS_STATEDIR);
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;
- }
+ /* can only change number of threads if nfsd is already up */
+ if (nfssvc_inuse()) {
+ socket_up = 1;
+ goto set_threads;
+ }
+
+ /*
+ * must set versions before the fd's so that the right versions get
+ * registered with rpcbind. Note that on older kernels w/o the right
+ * interfaces, these are a no-op.
+ */
+ nfssvc_setvers(versbits, minorvers4);
+
+ error = nfssvc_set_sockets(AF_INET, proto4, haddr, port);
+ if (!error)
+ socket_up = 1;
+
+#ifdef IPV6_SUPPORTED
+ error = nfssvc_set_sockets(AF_INET6, proto6, haddr, port);
+ if (!error)
+ socket_up = 1;
+#endif /* IPV6_SUPPORTED */
+
+set_threads:
+ /* don't start any threads if unable to hand off any sockets */
+ if (!socket_up) {
+ xlog(L_ERROR, "unable to set any sockets for nfsd");
+ goto out;
}
- /* 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 */
+ error = 0;
+
+ /*
+ * 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");
+ xlog(L_ERROR, "Unable to open /dev/null: %m");
else {
+ /* switch xlog output to syslog since stderr is being closed */
+ xlog_syslog(1);
+ xlog_stderr(0);
(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, protobits, haddr)) < 0) {
- int e = errno;
- syslog(LOG_ERR, "nfssvc: %s", strerror(e));
- closelog();
- }
-
+ if ((error = nfssvc_threads(portnum, count)) < 0)
+ xlog(L_ERROR, "error starting threads: errno %d (%m)", errno);
+out:
+ free(port);
+ free(haddr);
+ free(progname);
return (error != 0);
}
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",
+ "%s [-d|--debug] [-H hostname] [-p|-P|--port port] [-N|--no-nfs-version version ] [-s|--syslog] [-T|--no-tcp] [-U|--no-udp] nrservs\n",
prog);
exit(2);
}
projects / nfs-utils.git / blobdiff