6 * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
13 #include <sys/socket.h>
14 #include <netinet/in.h>
15 #include <arpa/inet.h>
23 #define NFSD_PORTS_FILE "/proc/fs/nfsd/portlist"
24 #define NFSD_VERS_FILE "/proc/fs/nfsd/versions"
25 #define NFSD_THREAD_FILE "/proc/fs/nfsd/threads"
28 nfssvc_setfds(int port, unsigned int ctlbits, char *haddr)
32 int udpfd = -1, tcpfd = -1;
33 struct sockaddr_in sin;
35 fd = open(NFSD_PORTS_FILE, O_RDONLY);
38 n = read(fd, buf, BUFSIZ);
42 /* there are no ports currently open, so it is safe to
43 * try to open some and pass them through.
44 * Note: If the user explicitly asked for 'udp', then
45 * we should probably check if that is open, and should
46 * open it if not. However we don't yet. All sockets
47 * have to be opened when the first daemon is started.
49 fd = open(NFSD_PORTS_FILE, O_WRONLY);
52 sin.sin_family = AF_INET;
53 sin.sin_port = htons(port);
54 sin.sin_addr.s_addr = inet_addr(haddr);
56 if (NFSCTL_UDPISSET(ctlbits)) {
57 udpfd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
59 xlog(L_ERROR, "unable to create UDP socket: "
60 "errno %d (%m)", errno);
63 if (bind(udpfd, (struct sockaddr *)&sin, sizeof(sin)) < 0){
64 xlog(L_ERROR, "unable to bind UDP socket: "
65 "errno %d (%m)", errno);
70 if (NFSCTL_TCPISSET(ctlbits)) {
71 tcpfd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
73 xlog(L_ERROR, "unable to create TCP socket: "
74 "errno %d (%m)", errno);
77 if (setsockopt(tcpfd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)) < 0) {
78 xlog(L_ERROR, "unable to set SO_REUSEADDR: "
79 "errno %d (%m)", errno);
82 if (bind(tcpfd, (struct sockaddr *)&sin, sizeof(sin)) < 0){
83 xlog(L_ERROR, "unable to bind TCP socket: "
84 "errno %d (%m)", errno);
87 if (listen(tcpfd, 64) < 0){
88 xlog(L_ERROR, "unable to create listening socket: "
89 "errno %d (%m)", errno);
94 snprintf(buf, BUFSIZ,"%d\n", udpfd);
95 if (write(fd, buf, strlen(buf)) != strlen(buf)) {
97 "writing fds to kernel failed: errno %d (%m)",
105 fd = open(NFSD_PORTS_FILE, O_WRONLY);
106 snprintf(buf, BUFSIZ,"%d\n", tcpfd);
107 if (write(fd, buf, strlen(buf)) != strlen(buf)) {
109 "writing fds to kernel failed: errno %d (%m)",
118 nfssvc_versbits(unsigned int ctlbits, int minorvers4)
121 char buf[BUFSIZ], *ptr;
125 fd = open(NFSD_VERS_FILE, O_WRONLY);
129 for (n = NFSD_MINVERS; n <= NFSD_MAXVERS; n++) {
130 if (NFSCTL_VERISSET(ctlbits, n))
131 off += snprintf(ptr+off, BUFSIZ - off, "+%d ", n);
133 off += snprintf(ptr+off, BUFSIZ - off, "-%d ", n);
135 n = minorvers4 >= 0 ? minorvers4 : -minorvers4;
136 if (n >= NFSD_MINMINORVERS4 && n <= NFSD_MAXMINORVERS4)
137 off += snprintf(ptr+off, BUFSIZ - off, "%c4.%d",
138 minorvers4 > 0 ? '+' : '-',
140 xlog(D_GENERAL, "Writing version string to kernel: %s", buf);
141 snprintf(ptr+off, BUFSIZ - off, "\n");
142 if (write(fd, buf, strlen(buf)) != strlen(buf))
143 xlog(L_ERROR, "Setting version failed: errno %d (%m)", errno);
150 nfssvc(int port, int nrservs, unsigned int versbits, int minorvers4,
151 unsigned protobits, char *haddr)
153 struct nfsctl_arg arg;
156 /* Note: must set versions before fds so that
157 * the ports get registered with portmap against correct
160 nfssvc_versbits(versbits, minorvers4);
161 nfssvc_setfds(port, protobits, haddr);
163 fd = open(NFSD_THREAD_FILE, O_WRONLY);
165 fd = open("/proc/fs/nfs/threads", O_WRONLY);
167 /* 2.5+ kernel with nfsd filesystem mounted.
168 * Just write the number in.
169 * Cannot handle port number yet, but does anyone care?
173 snprintf(buf, 20,"%d\n", nrservs);
174 n = write(fd, buf, strlen(buf));
176 if (n != strlen(buf))
182 arg.ca_version = NFSCTL_VERSION;
183 arg.ca_svc.svc_nthreads = nrservs;
184 arg.ca_svc.svc_port = port;
185 return nfsctl(NFSCTL_SVC, &arg, NULL);