sys/src/lib9p/post.c

   1 #include <u.h>
   2 #include <libc.h>
   3 #include <fcall.h>
   4 #include <thread.h>
   5 #include <9p.h>
   6
   7 static void
   8 postproc(void *v)
   9 {
  10         Srv *s = v;
  11         close((int)(uintptr)rendezvous(s, 0));
  12         srv(s);
  13 }
  14
  15 int
  16 postsrv(Srv *s, char *name)
  17 {
  18         int fd[2], cfd;
  19
  20         if(pipe(fd) < 0)
  21                 return -1;
  22         if(name != nil){
  23                 char buf[80];
  24
  25                 snprint(buf, sizeof buf, "/srv/%s", name);
  26                 if((cfd = create(buf, OWRITE|ORCLOSE|OCEXEC, 0600)) < 0
  27                 || fprint(cfd, "%d", fd[0]) < 0){
  28                         close(fd[0]);
  29                         fd[0] = -1;
  30                         goto Out;
  31                 }
  32         } else
  33                 cfd = -1;
  34
  35         /* now we are commited */
  36         s->infd = s->outfd = fd[1];
  37         if(s->forker == nil)
  38                 s->forker = srvforker;
  39         (*s->forker)(postproc, s, RFNAMEG|RFNOTEG);
  40
  41         rfork(RFFDG);
  42         rendezvous(s, (void*)(uintptr)fd[0]);
  43 Out:
  44         if(cfd >= 0)
  45                 close(cfd);
  46         close(fd[1]);
  47         return fd[0];
  48 }