X-Git-Url: https://git.decadent.org.uk/gitweb/?a=blobdiff_plain;f=utils%2Fnfsd%2Fnfsd.c;h=772f72df54693751550eac1c9fbe978d427720b9;hb=ac84b80afc13d5a96813e678ad5c86c6036f022e;hp=3a22370a27540c81979656e7fcf97dde85c4ca55;hpb=8b7ad01b14df1e7529b9ba8a1ea17df0d6004ef9;p=nfs-utils.git

diff --git a/utils/nfsd/nfsd.c b/utils/nfsd/nfsd.c
index 3a22370..772f72d 100644
--- a/utils/nfsd/nfsd.c
+++ b/utils/nfsd/nfsd.c
@@ -11,7 +11,12 @@
 
 #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 "nfslib.h"
 
 static void	usage(const char *);
@@ -19,7 +24,7 @@ static void	usage(const char *);
 int
 main(int argc, char **argv)
 {
-	int	count = 1, c, error, port;
+	int	count = 1, c, error, port, fd;
 
 	port = 2049;
 
@@ -43,6 +48,12 @@ main(int argc, char **argv)
 		}
 	}
 
+	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 */
@@ -53,8 +64,28 @@ main(int argc, char **argv)
 		}
 	}
 
-	if ((error = nfssvc(port, count)) < 0)
-		perror("nfssvc");
+	/* 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);
+	}
+	fd = sysconf(_SC_OPEN_MAX);
+	while (--fd > 2)
+		(void) close(fd);
+
+	if ((error = nfssvc(port, count)) < 0) {
+		int e = errno;
+		openlog("nfsd", LOG_PID, LOG_DAEMON);
+		syslog(LOG_ERR, "nfssvc: %s", strerror(e));
+		closelog();
+	}
 
 	return (error != 0);
 }