1991/1219/port/devsrv.c (diff list | history)

1991/1127/sys/src/9/port/devsrv.c:9,27 – 1991/1219/sys/src/9/port/devsrv.c:9,35 (short | long | prev | next)
1990/0227
1991/0828		typedef struct Srv Srv; struct Srv{
1990/0227		Lock;
1991/0828		char *name; Chan **chan; }srv;
1991/1219		char name[NAMELEN]; char owner[NAMELEN]; ulong perm; Chan *chan; };
1990/0227
1991/1219		Lock srvlk; Srv *srv;
1991/0828		int srvgen(Chan *c, Dirtab *tab, int ntab, int s, Dir *dp) {
1991/1219		Srv *sp;
1991/0828		if(s >= conf.nsrv) return -1; if(srv.chan[s] == 0)
1991/1219		sp = &srv[s]; if(sp->chan == 0)
1991/0828		return 0;
1991/1109		devdir(c, (Qid){s, 0}, &srv.name[s*NAMELEN], 0, eve, 0666, dp);
1991/1219		devdir(c, (Qid){s, 0}, sp->name, 0, sp->owner, sp->perm, dp);
1991/0828		return 1; }
1991/1127/sys/src/9/port/devsrv.c:33,40 – 1991/1219/sys/src/9/port/devsrv.c:41,47
1990/0227		void srvreset(void) {
1991/0828		srv.chan = ialloc(conf.nsrv*sizeof(Chan*), 0); srv.name = ialloc(conf.nsrv*NAMELEN, 0);
1991/1219		srv = ialloc(conf.nsrv*sizeof(Srv), 0);
1990/0227		} Chan *
1991/1127/sys/src/9/port/devsrv.c:74,85 – 1991/1219/sys/src/9/port/devsrv.c:81,92
1990/0227		c->offset = 0; return c; }
1991/0828		lock(&srv);
1991/1219		lock(&srvlk);
1991/0828		if(waserror()){ unlock(&srv);
1991/1219		unlock(&srvlk);
1991/0828		nexterror(); } f = srv.chan[c->qid.path];
1991/1219		f = srv[c->qid.path].chan;
1991/0828		if(f == 0)
1990/11211		error(Eshutdown);
1991/0828		if(omode&OTRUNC)
1991/1127/sys/src/9/port/devsrv.c:88,94 – 1991/1219/sys/src/9/port/devsrv.c:95,101
1990/11211		error(Eperm);
1990/0227		close(c); incref(f);
1991/0828		unlock(&srv);
1991/1219		unlock(&srvlk);
1991/0828		poperror();
1990/0227		return f; }
1991/1127/sys/src/9/port/devsrv.c:97,124 – 1991/1219/sys/src/9/port/devsrv.c:104,138
1990/0227		srvcreate(Chan *c, char *name, int omode, ulong perm) {
1991/0828		int j, i;
1991/1219		Srv *sp;
1990/0227
1991/0828		if(omode != OWRITE) error(Eperm); lock(&srv);
1991/1219		lock(&srvlk);
1991/0828		if(waserror()){ unlock(&srv);
1991/1219		unlock(&srvlk);
1990/0227		nexterror(); }
1991/0828		j = -1; for(i=0; i<conf.nsrv; i++){ if(srv.chan[i] == 0){
1991/1219		if(srv[i].chan == 0){
1991/0828		if(j == -1) j = i; }else if(strcmp(name, &srv.name[i*NAMELEN]) == 0)
1991/1219		} else if(strcmp(name, srv[i].name) == 0)
1990/11211		error(Einuse);
1991/0828		} if(j == -1) error(Enosrv); srv.chan[j] = c; unlock(&srv);
1991/1219		sp = &srv[j]; sp->chan = c; unlock(&srvlk);
1990/1002		poperror();
1991/0828		strcpy(&srv.name[j*NAMELEN], name);
1991/1219		strncpy(sp->name, name, NAMELEN); strncpy(sp->owner, u->p->user, NAMELEN); sp->perm = perm&0777;
1991/0828		c->qid.path = j;
1990/0227		c->flag |= COPEN;
1991/0828		c->mode = OWRITE;
1991/1127/sys/src/9/port/devsrv.c:131,148 – 1991/1219/sys/src/9/port/devsrv.c:145,163
1990/0227
1991/0828		if(c->qid.path == CHDIR)
1990/11211		error(Eperm);
1991/0828		lock(&srv);
1991/1219		lock(&srvlk);
1990/1110		if(waserror()){
1991/0828		unlock(&srv);
1991/1219		unlock(&srvlk);
1990/0227		nexterror(); }
1991/0828		f = srv.chan[c->qid.path];
1991/1219		f = srv[c->qid.path].chan;
1991/0828		if(f == 0) error(Eshutdown); if(strcmp(&srv.name[c->qid.path*NAMELEN], "boot") == 0)
1991/1219		if(strcmp(srv[c->qid.path].name, "boot") == 0)
1991/0828		error(Eperm); srv.chan[c->qid.path] = 0; unlock(&srv);
1991/1219		srv[c->qid.path].chan = 0; unlock(&srvlk);
1990/0227		poperror();
1991/0828		close(f);
1990/0227		}
1991/1127/sys/src/9/port/devsrv.c:175,181 – 1991/1219/sys/src/9/port/devsrv.c:190,196
1990/0227		char buf[32];
1991/0828		i = c->qid.path; if(srv.chan[i] != c) /* already been written to */
1991/1219		if(srv[i].chan != c) /* already been written to */
1990/11211		error(Egreg);
1990/1110		if(n >= sizeof buf)
1990/11211		error(Egreg);
1991/1127/sys/src/9/port/devsrv.c:185,192 – 1991/1219/sys/src/9/port/devsrv.c:200,207
1991/1127		f = u->p->fgrp; lock(f);
1991/1011		fdtochan(fd, -1, 0); /* error check only */
1991/1127		srv.chan[i] = f->fd[fd];
1991/0921		incref(srv.chan[i]);
1991/1219		srv[i].chan = f->fd[fd]; incref(srv[i].chan);
1991/1127		unlock(f);
1990/0227		return n; }