X-Git-Url: https://git.decadent.org.uk/gitweb/?p=nfs-utils.git;a=blobdiff_plain;f=utils%2Fnfsd%2Fnfssvc.c;h=683008e291c6bff1016b365789d3401b5380604c;hp=34c67ca11b927ff6201e2d6b61a2e9c8c605ae7b;hb=014e00dfaea0efc92150e2aedc5ca43aa337545e;hpb=b594ee2b2a1b9c0c5823a7af279488f113f91be4

diff --git a/utils/nfsd/nfssvc.c b/utils/nfsd/nfssvc.c
index 34c67ca..683008e 100644
--- a/utils/nfsd/nfssvc.c
+++ b/utils/nfsd/nfssvc.c
@@ -15,25 +15,22 @@
 #include <netdb.h>
 #include <netinet/in.h>
 #include <arpa/inet.h>
+#include <sys/stat.h>
 #include <unistd.h>
 #include <fcntl.h>
 #include <errno.h>
+#include <stdlib.h>
 
 #include "nfslib.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
+#ifndef NFSD_FS_DIR
+#define NFSD_FS_DIR	  "/proc/fs/nfsd"
+#endif
 
-#define NFSD_PORTS_FILE     "/proc/fs/nfsd/portlist"
-#define NFSD_VERS_FILE    "/proc/fs/nfsd/versions"
-#define NFSD_THREAD_FILE  "/proc/fs/nfsd/threads"
+#define NFSD_PORTS_FILE   NFSD_FS_DIR "/portlist"
+#define NFSD_VERS_FILE    NFSD_FS_DIR "/versions"
+#define NFSD_THREAD_FILE  NFSD_FS_DIR "/threads"
 
 /*
  * declaring a common static scratch buffer here keeps us from having to
@@ -43,6 +40,46 @@
  */
 char buf[128];
 
+/*
+ * Using the "new" interfaces for nfsd requires that /proc/fs/nfsd is
+ * actually mounted. Make an attempt to mount it here if it doesn't appear
+ * to be. If the mount attempt fails, no big deal -- fall back to using nfsctl
+ * instead.
+ */
+void
+nfssvc_mount_nfsdfs(char *progname)
+{
+	int err;
+	struct stat statbuf;
+
+	err = stat(NFSD_THREAD_FILE, &statbuf);
+	if (err == 0)
+		return;
+
+	if (errno != ENOENT) {
+		xlog(L_ERROR, "Unable to stat %s: errno %d (%m)",
+				NFSD_THREAD_FILE, errno);
+		return;
+	}
+
+	/*
+	 * this call can return an error if modprobe is set up to automatically
+	 * mount nfsdfs when nfsd.ko is plugged in. So, ignore the return
+	 * code from it and just check for the "threads" file afterward.
+	 */
+	system("/bin/mount -t nfsd nfsd " NFSD_FS_DIR " >/dev/null 2>&1");
+
+	err = stat(NFSD_THREAD_FILE, &statbuf);
+	if (err == 0)
+		return;
+
+	xlog(L_WARNING, "Unable to access " NFSD_FS_DIR " errno %d (%m)." 
+		"\nPlease try, as root, 'mount -t nfsd nfsd " NFSD_FS_DIR 
+		"' and then restart %s to correct the problem", errno, progname);
+
+	return;
+}
+
 /*
  * Are there already sockets configured? If not, then it is safe to try to
  * open some and pass them through.
@@ -137,8 +174,13 @@ nfssvc_setfds(const struct addrinfo *hints, const char *node, const char *port)
 		sockfd = socket(addr->ai_family, addr->ai_socktype,
 				addr->ai_protocol);
 		if (sockfd < 0) {
-			xlog(L_ERROR, "unable to create %s %s socket: "
-				"errno %d (%m)", family, proto, errno);
+			if (errno == EAFNOSUPPORT)
+				xlog(L_NOTICE, "address family %s not "
+						"supported by protocol %s",
+						family, proto);
+			else
+				xlog(L_ERROR, "unable to create %s %s socket: "
+				     "errno %d (%m)", family, proto, errno);
 			rc = errno;
 			goto error;
 		}
@@ -227,7 +269,7 @@ nfssvc_set_sockets(const int family, const unsigned int protobits,
 }
 
 void
-nfssvc_setvers(unsigned int ctlbits, int minorvers4)
+nfssvc_setvers(unsigned int ctlbits, int minorvers41)
 {
 	int fd, n, off;
 	char *ptr;
@@ -238,11 +280,9 @@ nfssvc_setvers(unsigned int ctlbits, int minorvers4)
 	if (fd < 0)
 		return;
 
-	n = minorvers4 >= 0 ? minorvers4 : -minorvers4;
-	if (n >= NFSD_MINMINORVERS4 && n <= NFSD_MAXMINORVERS4)
-		    off += snprintf(ptr+off, sizeof(buf) - off, "%c4.%d ",
-				    minorvers4 > 0 ? '+' : '-',
-				    n);
+	if (minorvers41)
+		off += snprintf(ptr+off, sizeof(buf) - off, "%c4.1",
+				minorvers41 > 0 ? '+' : '-');
 	for (n = NFSD_MINVERS; n <= NFSD_MAXVERS; n++) {
 		if (NFSCTL_VERISSET(ctlbits, n))
 		    off += snprintf(ptr+off, sizeof(buf) - off, "+%d ", n);