1990/0820/port/chan.c (diff list | history)

1990/08141/sys/src/9/port/chan.c:340,346 – 1990/0820/sys/src/9/port/chan.c:340,346 (short | long | prev | next)
1990/0227		goto Notfound; } if(c->mountid != mnt->mountid){
1990/0321		pprint("walk: changed underfoot?\n");
1990/0820		pprint("walk: changed underfoot? '%s'\n", name);
1990/0227		unlock(pg); goto Notfound; }
1990/08141/sys/src/9/port/chan.c:431,442 – 1990/0820/sys/src/9/port/chan.c:431,443
1990/0227		{ Chan *c, *nc; int t; int mntok;
1990/0820		int mntok, isdot;
1990/0227		char *elem = u->elem; if(name[0] == 0) error(0, Enonexist); mntok = 1;
1990/0820		isdot = 0;
1990/0227		if(name[0] == '/'){ c = clone(u->slash, 0); /*
1990/08141/sys/src/9/port/chan.c:459,466 – 1990/0820/sys/src/9/port/chan.c:460,471
1990/0227		}else name = nextelem(name, elem); c = (*devtab[t].attach)(elem); }else
1990/0820		}else{
1990/0227		c = clone(u->dot, 0);
1990/0820		name = skipslash(name); /* eat leading ./ */ if(*name == 0) isdot = 1; }
1990/0227		if(waserror()){ close(c);
1990/08141/sys/src/9/port/chan.c:468,475 – 1990/0820/sys/src/9/port/chan.c:473,481
1990/0227		} name = nextelem(name, elem); if(mntok) if(!(amode==Amount && elem[0]==0)) /* don't domount on dot or slash */
1990/0820		if(mntok && !isdot) if(!(amode==Amount && elem[0]==0)) /* don't domount on slash */
1990/0227		c = domount(c); /* see case Atodir below */ /*
1990/08141/sys/src/9/port/chan.c:482,487 – 1990/0820/sys/src/9/port/chan.c:488,494
1990/0227		c = nc; name = nextelem(name, elem); }
1990/0820
1990/0227		/* * Last element; act according to type of access. */
1990/08141/sys/src/9/port/chan.c:488,496 – 1990/0820/sys/src/9/port/chan.c:495,507
1990/0227		switch(amode){ case Aaccess:
1990/0515		if((nc=walk(c, elem, mntok)) == 0)
1990/0227		error(0, Enonexist); c = nc;
1990/0820		if(isdot) c = domount(c); else{ if((nc=walk(c, elem, mntok)) == 0) error(0, Enonexist); c = nc; }
1990/0227		break; case Atodir:
1990/08141/sys/src/9/port/chan.c:506,514 – 1990/0820/sys/src/9/port/chan.c:517,529
1990/0227		break; case Aopen: if((nc=walk(c, elem, mntok)) == 0) error(0, Enonexist); c = nc;
1990/0820		if(isdot) c = domount(c); else{ if((nc=walk(c, elem, mntok)) == 0) error(0, Enonexist); c = nc; }
1990/0227		Open: c = (*devtab[c->type].open)(c, omode);
1990/08141		if(omode & OCEXEC)
1990/08141/sys/src/9/port/chan.c:527,532 – 1990/0820/sys/src/9/port/chan.c:542,549
1990/0227		break; case Acreate:
1990/0820		if(isdot) error(0, Eisdir);
1990/0227		if((nc=walk(c, elem, 1)) != 0){ c = nc; omode |= OTRUNC;
1990/08141/sys/src/9/port/chan.c:552,561 – 1990/0820/sys/src/9/port/chan.c:569,587
1990/0227		char* skipslash(char *name) {
1990/0820		Again:
1990/0227		while(*name == '/'){ if(((ulong)name&KZERO)==0 && (((ulong)name+1)&(BY2PG-1))==0) validaddr((ulong)name+1, 1, 0); name++;
1990/0820		} if(*name == '.'){ if(((ulong)name&KZERO)==0 && (((ulong)name+1)&(BY2PG-1))==0) validaddr((ulong)name+1, 1, 0); if(name[1]==0 || name[1]=='/'){ name++; goto Again; }
1990/0227		} return name; }