ref: ddaaf65efe197dafd7ca9175debb075dca0ce49b
dir: /sys/src/lib9p/post.c/
#include <u.h> #include <libc.h> #include <fcall.h> #include <thread.h> #include <9p.h> #include <auth.h> static void postproc(void *v) { Srv *s; s = v; rendezvous(0, 0); close(s->srvfd); srv(s); } static void postsrv(Srv *s, char *name) { char buf[80]; int fd[2]; int cfd; if(pipe(fd) < 0) sysfatal("pipe: %r"); s->infd = s->outfd = fd[1]; s->srvfd = fd[0]; if(name != nil){ snprint(buf, sizeof buf, "/srv/%s", name); if((cfd = create(buf, OWRITE|ORCLOSE|OCEXEC, 0600)) < 0) sysfatal("create %s: %r", buf); if(fprint(cfd, "%d", s->srvfd) < 0) sysfatal("write %s: %r", buf); } else cfd = -1; if(_forker == nil) sysfatal("no forker"); _forker(postproc, s, RFNAMEG|RFNOTEG); rfork(RFFDG); rendezvous(0, 0); close(s->infd); if(s->infd != s->outfd) close(s->outfd); if(cfd >= 0) close(cfd); } void _postmountsrv(Srv *s, char *name, char *mtpt, int flag) { postsrv(s, name); if(mtpt != nil){ if(amount(s->srvfd, mtpt, flag, "") == -1) sysfatal("mount %s: %r", mtpt); /* mount closed s->srvfd */ } else close(s->srvfd); } void _postsharesrv(Srv *s, char *name, char *mtpt, char *desc) { char buf[80]; int cfd; if(mtpt != nil && desc != nil){ snprint(buf, sizeof buf, "#σc/%s", mtpt); if((cfd = create(buf, OREAD, DMDIR|0700)) >= 0) close(cfd); snprint(buf, sizeof buf, "#σc/%s/%s", mtpt, desc); if((cfd = create(buf, OWRITE|ORCLOSE|OCEXEC, 0600)) < 0) sysfatal("create %s: %r", buf); } else cfd = -1; postsrv(s, name); if(cfd >= 0){ if(fprint(cfd, "%d\n", s->srvfd) < 0) sysfatal("write %s: %r", buf); close(cfd); } close(s->srvfd); }