+++ /dev/null
-/*
- * support/nfs/nfssvc.c
- *
- * Run an NFS daemon.
- *
- * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
- */
-
-#ifdef HAVE_CONFIG_H
-#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, int minorvers4)
-{
- int fd, n, off;
- char buf[BUFSIZ], *ptr;
-
- ptr = buf;
- off = 0;
- fd = open(NFSD_VERS_FILE, O_WRONLY);
- if (fd < 0)
- return;
-
- for (n = NFSD_MINVERS; n <= NFSD_MAXVERS; n++) {
- if (NFSCTL_VERISSET(ctlbits, n))
- off += snprintf(ptr+off, BUFSIZ - off, "+%d ", n);
- else
- off += snprintf(ptr+off, BUFSIZ - off, "-%d ", n);
- }
- n = minorvers4 >= 0 ? minorvers4 : -minorvers4;
- if (n >= NFSD_MINMINORVERS4 && n <= NFSD_MAXMINORVERS4)
- off += snprintf(ptr+off, BUFSIZ - off, "%c4.%d",
- minorvers4 > 0 ? '+' : '-',
- n);
- snprintf(ptr+off, BUFSIZ - off, "\n");
- if (write(fd, buf, strlen(buf)) != strlen(buf)) {
- syslog(LOG_ERR, "nfssvc: Setting version failed: errno %d (%s)",
- errno, strerror(errno));
- }
- close(fd);
-
- return;
-}
-int
-nfssvc(int port, int nrservs, unsigned int versbits, int minorvers4,
- 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, minorvers4);
- nfssvc_setfds(port, protobits, haddr);
-
- fd = open(NFSD_THREAD_FILE, O_WRONLY);
- if (fd < 0)
- fd = open("/proc/fs/nfs/threads", O_WRONLY);
- if (fd >= 0) {
- /* 2.5+ kernel with nfsd filesystem mounted.
- * Just write the number in.
- * Cannot handle port number yet, but does anyone care?
- */
- char buf[20];
- int n;
- snprintf(buf, 20,"%d\n", nrservs);
- n = write(fd, buf, strlen(buf));
- close(fd);
- if (n != strlen(buf))
- return -1;
- else
- return 0;
- }
-
- arg.ca_version = NFSCTL_VERSION;
- arg.ca_svc.svc_nthreads = nrservs;
- arg.ca_svc.svc_port = port;
- return nfsctl(NFSCTL_SVC, &arg, NULL);
-}
projects / nfs-utils.git / blobdiff