support/nfs/nfssvc.c

   1 /*
   2  * support/nfs/nfssvc.c
   3  *
   4  * Run an NFS daemon.
   5  *
   6  * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
   7  */
   8
   9 #include "config.h"
  10
  11 #include <unistd.h>
  12 #include <fcntl.h>
  13
  14 #include "nfslib.h"
  15
  16 int
  17 nfssvc(int port, int nrservs)
  18 {
  19         struct nfsctl_arg       arg;
  20         int fd;
  21
  22         fd = open("/proc/fs/nfsd/threads", O_WRONLY);
  23         if (fd < 0)
  24                 fd = open("/proc/fs/nfs/threads", O_WRONLY);
  25         if (fd >= 0) {
  26                 /* 2.5+ kernel with nfsd filesystem mounted.
  27                  * Just write the number in.
  28                  * Cannot handle port number yet, but does anyone care?
  29                  */
  30                 char buf[20];
  31                 int n;
  32                 snprintf(buf, 20,"%d\n", nrservs);
  33                 n = write(fd, buf, strlen(buf));
  34                 close(fd);
  35                 if (n != strlen(buf))
  36                         return -1;
  37                 else
  38                         return 0;
  39         }
  40
  41         arg.ca_version = NFSCTL_VERSION;
  42         arg.ca_svc.svc_nthreads = nrservs;
  43         arg.ca_svc.svc_port = port;
  44         return nfsctl(NFSCTL_SVC, &arg, NULL);
  45 }