cwfs: fix 1GB memsize limitation

the malloc pool allocator is limited in its allocation
size. as almost all data structures in cwfs are never
freed, use brk() in ialloc() instead of mallocalign().
this means memory returned by ialloc() cannot be freed!

to make sure we do not call free by accident, remove
the #define malloc(n) ialloc(n, 0) macro and use ialloc()
directly as in the original code to show the intend
of permanent allocations.

1 files changed, 4 insertions, 5 deletions

diff --git a/sys/src/cmd/cwfs/config.c b/sys/src/cmd/cwfs/config.c
index bcb8b5e58..da71fcd69 100644
--- a/sys/src/cmd/cwfs/config.c
+++ b/sys/src/cmd/cwfs/config.c
@@ -175,7 +175,7 @@ config1(int c)
 	Device *d, *t;
 	int m;
 
-	d = malloc(sizeof(Device));
+	d = ialloc(sizeof(Device), 0);
 	do {
 		t = config();
 		if(d->cat.first == 0)
@@ -233,8 +233,7 @@ config(void)
 
 	if(f.error)
 		return devnone;
-	d = malloc(sizeof(Device));
-
+	d = ialloc(sizeof(Device), 0);
 	c = *f.charp++;
 	switch(c) {
 	default:
@@ -277,7 +276,7 @@ config(void)
 		d->wren.ctrl = -1;
 		d->wren.targ = -1;
 		d->wren.lun = -1;
-		d->wren.file = malloc((e - s) + 1);
+		d->wren.file = ialloc((e - s) + 1, 0);
 		memmove(d->wren.file, s, e - s);
 		d->wren.file[e - s] = 0;
 		break;
@@ -336,7 +335,7 @@ config(void)
 		d->type = Devcw;
 		d->cw.c = config();
 		d->cw.w = config();
-		d->cw.ro = malloc(sizeof(Device));
+		d->cw.ro = ialloc(sizeof(Device), 0);
 		d->cw.ro->type = Devro;
 		d->cw.ro->ro.parent = d;
 		f.lastcw = d;