1992/0623/port/net.c (diff list | history)

1992/0619/sys/src/9/port/net.c:15,20 – 1992/0623/sys/src/9/port/net.c:15,34 (short | long | prev | next)
1991/1107		}; /*
1992/0623		* find protection structure */ static Netprot* findprot(Network *np, int id) { Netprot *p; for(p = np->prot; p; p = p->next) if(p->id == id) break; return p; } /*
1991/1107		* generate a 3 level directory */ int
1992/0619/sys/src/9/port/net.c:24,30 – 1992/0623/sys/src/9/port/net.c:38,43
1991/1107		char buf[32]; Network *np = vp;
1991/1115		int t; int id; Netprot *p; int perm; char *o;
1992/0619/sys/src/9/port/net.c:61,69 – 1992/0623/sys/src/9/port/net.c:74,81
1991/1107		} /* third level depends on the number of info files */
1991/1115		id = STREAMID(c->qid.path); p = &np->prot[id]; if(*p->owner){
1992/0623		p = findprot(np, STREAMID(c->qid.path)); if(p && *p->owner){
1991/1115		o = p->owner; perm = p->mode; } else {
1992/0619/sys/src/9/port/net.c:153,159 – 1992/0623/sys/src/9/port/net.c:165,173
1991/1115		Dir dir; Netprot *p; p = &np->prot[STREAMID(c->qid.path)];
1992/0623		p = findprot(np, STREAMID(c->qid.path)); if(p == 0) error(Enonexist);
1991/1115		lock(np); if(strncmp(p->owner, u->p->user, NAMELEN)){ unlock(np);
1992/0619/sys/src/9/port/net.c:169,174 – 1992/0623/sys/src/9/port/net.c:183,189
1991/1107		netopen(Chan *c, int omode, Network *np) {
1991/1122		int id = 0;
1992/0623		Netprot *p;
1991/1107		if(c->qid.path & CHDIR){ if(omode != OREAD)
1992/0619/sys/src/9/port/net.c:199,205 – 1992/0623/sys/src/9/port/net.c:214,222
1991/1107		streamopen(c, np->devp); if(np->protop && c->stream->devq->next->info != np->protop) pushq(c->stream, np->protop);
1991/1116		if(netown(np, id, u->p->user, omode&7) < 0)
1992/0623		p = findprot(np, id); if(p == 0) print("netopen: can't find %d\n", id); if(netown(p, u->p->user, omode&7) < 0)
1991/1116		error(Eperm);
1991/1107		break; }
1992/0619/sys/src/9/port/net.c:227,245 – 1992/0623/sys/src/9/port/net.c:244,279
1991/1107		error(Ebadusefd);
1991/1108		(*np->info[t-Qinf].fill)(c, buf, sizeof(buf));
1991/1115		return stringread(a, n, buf, offset);
1992/0623		return readstr(offset, a, n, buf);
1991/1115		}
1992/0623		void netadd(Network *np, Netprot *p, int id) { Netprot **l, *pp; memset(p, 0, sizeof(Netprot)); p->id = id; l = &np->prot; for(pp = np->prot; pp; pp = pp->next){ if(pp->id == id) panic("netadd"); l = &pp->next; } *l = p; } Lock netlock;
1991/1115		int netown(Network *np, int id, char *o, int omode)
1992/0623		netown(Netprot *p, char *o, int omode)
1991/1115		{ static int access[] = { 0400, 0200, 0600, 0100 }; Netprot *p; int mode; int t; p = &np->prot[id]; lock(np);
1992/0623		lock(&netlock);
1991/1115		if(*p->owner){ if(strncmp(o, p->owner, NAMELEN) == 0) /* User */ mode = p->mode;
1992/0619/sys/src/9/port/net.c:250,271 – 1992/0623/sys/src/9/port/net.c:284,304
1991/1115		t = access[omode&3]; if((t & mode) == t){ unlock(np);
1992/0623		unlock(&netlock);
1991/1115		return 0; } else { unlock(np);
1992/0623		unlock(&netlock);
1991/1115		return -1; } } strncpy(p->owner, o, NAMELEN); np->prot[id].mode = 0660; unlock(np);
1992/0623		p->mode = 0660; unlock(&netlock);
1991/1115		return 0; } void netdisown(Network *np, int id)
1992/0623		netdisown(Netprot *p)
1991/1115		{
1992/0416		if(np == 0) panic("np == 0");
1991/1115		*np->prot[id].owner = 0;
1992/0623		p->owner[0] = 0;
1991/1107		}