X-Git-Url: https://git.decadent.org.uk/gitweb/?p=nfs-utils.git;a=blobdiff_plain;f=utils%2Fmountd%2Fmountd.c;h=971e4f4e2be8ca774328aed24c921bdea4f7edcc;hp=8779afed4a4fbb73ff59c3a3e1d6a93da15591be;hb=8b064fcf464aaf3717d8940f97a7d3f8bf21de1a;hpb=0bdb8d4f216cafb4fef03c9a1fc1f87508eed2d3

diff --git a/utils/mountd/mountd.c b/utils/mountd/mountd.c
index 8779afe..971e4f4 100644
--- a/utils/mountd/mountd.c
+++ b/utils/mountd/mountd.c
@@ -14,9 +14,11 @@
 #include <arpa/inet.h>
 #include <unistd.h>
 #include <stdlib.h>
+#include <string.h>
 #include <getopt.h>
 #include <errno.h>
 #include <fcntl.h>
+#include <sys/resource.h>
 #include "xmalloc.h"
 #include "misc.h"
 #include "mountd.h"
@@ -29,6 +31,7 @@ static struct nfs_fh_len *get_rootfh(struct svc_req *, dirpath *, int *, int v3)
 static struct option longopts[] =
 {
 	{ "foreground", 0, 0, 'F' },
+	{ "descriptors", 1, 0, 'o' },
 	{ "debug", 1, 0, 'd' },
 	{ "help", 0, 0, 'h' },
 	{ "exports-file", 1, 0, 'f' },
@@ -389,13 +392,23 @@ main(int argc, char **argv)
 	char	*export_file = _PATH_EXPORTS;
 	int	foreground = 0;
 	int	port = 0;
+	int	descriptors = 256;
 	int	c;
 	struct sigaction sa;
+	struct rlimit rlim;
 
 	/* Parse the command line options and arguments. */
 	opterr = 0;
-	while ((c = getopt_long(argc, argv, "Fd:f:p:P:hN:V:v", longopts, NULL)) != EOF)
+	while ((c = getopt_long(argc, argv, "on:Fd:f:p:P:hN:V:v", longopts, NULL)) != EOF)
 		switch (c) {
+		case 'o':
+			descriptors = atoi(optarg);
+			if (descriptors <= 0) {
+				fprintf(stderr, "%s: bad descriptors: %s\n",
+					argv [0], optarg);
+				usage(argv [0], 1);
+			}
+			break;
 		case 'F':
 			foreground = 1;
 			break;
@@ -440,6 +453,25 @@ main(int argc, char **argv)
 	if (optind != argc || !(nfs_version & 0x7))
 		usage(argv [0], 1);
 
+	if (chdir(NFS_STATEDIR)) {
+		fprintf(stderr, "%s: chdir(%s) failed: %s\n",
+			argv [0], NFS_STATEDIR, strerror(errno));
+		exit(1);
+	}
+
+	if (getrlimit (RLIMIT_NOFILE, &rlim) != 0) {
+		fprintf(stderr, "%s: getrlimit (RLIMIT_NOFILE) failed: %s\n",
+			argv [0], strerror(errno));
+		exit(1);
+	}
+
+	rlim.rlim_cur = descriptors;
+	if (setrlimit (RLIMIT_NOFILE, &rlim) != 0) {
+		fprintf(stderr, "%s: setrlimit (RLIMIT_NOFILE) failed: %s\n",
+			argv [0], strerror(errno));
+		exit(1);
+	}
+
 	/* Initialize logging. */
 /*	xlog_open("mountd"); */
 
@@ -452,6 +484,13 @@ main(int argc, char **argv)
 	/* WARNING: the following works on Linux and SysV, but not BSD! */
 	sigaction(SIGCHLD, &sa, NULL);
 
+	/* Daemons should close all extra filehandles ... *before* RPC init. */
+	if (!foreground) {
+		int fd = sysconf (_SC_OPEN_MAX);
+		while (--fd > 2)
+			(void) close(fd);
+	}
+
 	if (nfs_version & 0x1)
 		rpc_init("mountd", MOUNTPROG, MOUNTVERS,
 			 mount_dispatch, port);
@@ -500,9 +539,9 @@ static void
 usage(const char *prog, int n)
 {
 	fprintf(stderr,
-"Usage: %s [-Fhnv] [-d kind] [-f exports-file] [-V version]\n"
-"	[-N version] [--debug kind] [-p|--port port] [--help] [--version]\n"
-"	[--exports-file=file] [--nfs-version version]\n"
-"	[--no-nfs-version version] [--no-tcp]\n", prog);
+"Usage: %s [-F|--foreground] [-h|--help] [-v|--version] [-d kind|--debug kind]\n"
+"	[-o num|--descriptors num] [-f exports-file|--exports-file=file]\n"
+"	[-p|--port port] [-V version|--nfs-version version]\n"
+"	[-N version|--no-nfs-version version] [-n|--no-tcp]\n", prog);
 	exit(n);
 }