X-Git-Url: https://git.decadent.org.uk/gitweb/?a=blobdiff_plain;f=utils%2Fnfsd%2Fnfsd.c;h=86e809499236c8a4bf3e3bf3c213d91dbcbdf4a1;hb=cf9569df886a4eda5ae55e5be3bce92c8f143373;hp=c1cb56fe46db0e8e276bccecdbb3532a42cf5fbc;hpb=63049fd3c95c67df5ac175c746f8ec9058f8a76c;p=nfs-utils.git

diff --git a/utils/nfsd/nfsd.c b/utils/nfsd/nfsd.c
index c1cb56f..86e8094 100644
--- a/utils/nfsd/nfsd.c
+++ b/utils/nfsd/nfsd.c
@@ -12,9 +12,12 @@
 #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 <netdb.h>
 #include "nfslib.h"
 
 static void	usage(const char *);
@@ -22,11 +25,14 @@ static void	usage(const char *);
 int
 main(int argc, char **argv)
 {
-	int	count = 1, c, error, port;
+	int	count = 1, c, error, port, fd;
+	struct servent *ent;
 
-	port = 2049;
-
-	/* FIXME: Check for nfs in /etc/services */
+	ent = getservbyname ("nfs", "udp");
+	if (ent != NULL)
+		port = ntohs (ent->s_port);
+	else
+		port = 2049;
 
 	while ((c = getopt(argc, argv, "hp:P:")) != EOF) {
 		switch(c) {
@@ -62,8 +68,28 @@ 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);
 }