#include <config.h>
#endif
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <syslog.h>
+
#include "nfslib.h"
+#define NFSD_PORTS_FILE "/proc/fs/nfsd/portlist"
+#define NFSD_VERS_FILE "/proc/fs/nfsd/versions"
+#define NFSD_THREAD_FILE "/proc/fs/nfsd/threads"
+
+static void
+nfssvc_setfds(int port, unsigned int ctlbits, char *haddr)
+{
+ int fd, n, on=1;
+ char buf[BUFSIZ];
+ int udpfd = -1, tcpfd = -1;
+ struct sockaddr_in sin;
+
+ fd = open(NFSD_PORTS_FILE, O_RDONLY);
+ if (fd < 0)
+ return;
+ n = read(fd, buf, BUFSIZ);
+ close(fd);
+ if (n != 0)
+ return;
+ /* there are no ports currently open, so it is safe to
+ * try to open some and pass them through.
+ * Note: If the user explicitly asked for 'udp', then
+ * we should probably check if that is open, and should
+ * open it if not. However we don't yet. All sockets
+ * have to be opened when the first daemon is started.
+ */
+ fd = open(NFSD_PORTS_FILE, O_WRONLY);
+ if (fd < 0)
+ return;
+ sin.sin_family = AF_INET;
+ sin.sin_port = htons(port);
+ sin.sin_addr.s_addr = inet_addr(haddr);
+
+ if (NFSCTL_UDPISSET(ctlbits)) {
+ udpfd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
+ if (udpfd < 0) {
+ syslog(LOG_ERR, "nfssvc: unable to create UPD socket: "
+ "errno %d (%s)\n", errno, strerror(errno));
+ exit(1);
+ }
+ if (bind(udpfd, (struct sockaddr *)&sin, sizeof(sin)) < 0){
+ syslog(LOG_ERR, "nfssvc: unable to bind UPD socket: "
+ "errno %d (%s)\n", errno, strerror(errno));
+ exit(1);
+ }
+ }
+
+ if (NFSCTL_TCPISSET(ctlbits)) {
+ tcpfd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
+ if (tcpfd < 0) {
+ syslog(LOG_ERR, "nfssvc: unable to createt tcp socket: "
+ "errno %d (%s)\n", errno, strerror(errno));
+ exit(1);
+ }
+ if (setsockopt(tcpfd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)) < 0) {
+ syslog(LOG_ERR, "nfssvc: unable to set SO_REUSEADDR: "
+ "errno %d (%s)\n", errno, strerror(errno));
+ exit(1);
+ }
+ if (bind(tcpfd, (struct sockaddr *)&sin, sizeof(sin)) < 0){
+ syslog(LOG_ERR, "nfssvc: unable to bind TCP socket: "
+ "errno %d (%s)\n", errno, strerror(errno));
+ exit(1);
+ }
+ if (listen(tcpfd, 64) < 0){
+ syslog(LOG_ERR, "nfssvc: unable to create listening socket: "
+ "errno %d (%s)\n", errno, strerror(errno));
+ exit(1);
+ }
+ }
+ if (udpfd >= 0) {
+ snprintf(buf, BUFSIZ,"%d\n", udpfd);
+ if (write(fd, buf, strlen(buf)) != strlen(buf)) {
+ syslog(LOG_ERR,
+ "nfssvc: writing fds to kernel failed: errno %d (%s)",
+ errno, strerror(errno));
+ }
+ close(fd);
+ fd = -1;
+ }
+ if (tcpfd >= 0) {
+ if (fd < 0)
+ fd = open(NFSD_PORTS_FILE, O_WRONLY);
+ snprintf(buf, BUFSIZ,"%d\n", tcpfd);
+ if (write(fd, buf, strlen(buf)) != strlen(buf)) {
+ syslog(LOG_ERR,
+ "nfssvc: writing fds to kernel failed: errno %d (%s)",
+ errno, strerror(errno));
+ }
+ }
+ close(fd);
+
+ return;
+}
static void
nfssvc_versbits(unsigned int ctlbits)
{
ptr = buf;
off = 0;
- fd = open("/proc/fs/nfsd/versions", O_WRONLY);
+ fd = open(NFSD_VERS_FILE, O_WRONLY);
if (fd < 0)
return;
return;
}
int
-nfssvc(int port, int nrservs, unsigned int versbits)
+nfssvc(int port, int nrservs, unsigned int versbits, unsigned protobits,
+ char *haddr)
{
struct nfsctl_arg arg;
int fd;
+ /* Note: must set versions before fds so that
+ * the ports get registered with portmap against correct
+ * versions
+ */
nfssvc_versbits(versbits);
+ nfssvc_setfds(port, protobits, haddr);
- fd = open("/proc/fs/nfsd/threads", O_WRONLY);
+ fd = open(NFSD_THREAD_FILE, O_WRONLY);
if (fd < 0)
fd = open("/proc/fs/nfs/threads", O_WRONLY);
if (fd >= 0) {