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69 lines
1.3 KiB
C
69 lines
1.3 KiB
C
/*
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* Copyright (C) 2001 Sistina Software (UK) Limited.
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*
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* This file is released under the LGPL.
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*/
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#include "lib.h"
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#include "filter-composite.h"
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#include <stdarg.h>
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static int _and_p(struct dev_filter *f, struct device *dev)
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{
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struct dev_filter **filters = (struct dev_filter **) f->private;
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while (*filters) {
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if (!(*filters)->passes_filter(*filters, dev))
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return 0;
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filters++;
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}
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log_debug("Using %s", dev_name(dev));
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return 1;
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}
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static void _destroy(struct dev_filter *f)
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{
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struct dev_filter **filters = (struct dev_filter **) f->private;
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while (*filters) {
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(*filters)->destroy(*filters);
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filters++;
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}
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dbg_free(f->private);
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dbg_free(f);
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}
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struct dev_filter *composite_filter_create(int n, struct dev_filter **filters)
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{
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struct dev_filter **filters_copy, *cf;
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if (!filters) {
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stack;
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return NULL;
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}
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if (!(filters_copy = dbg_malloc(sizeof(*filters) * (n + 1)))) {
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log_error("composite filters allocation failed");
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return NULL;
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}
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memcpy(filters_copy, filters, sizeof(*filters) * n);
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filters_copy[n] = NULL;
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if (!(cf = dbg_malloc(sizeof(*cf)))) {
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log_error("compsoite filters allocation failed");
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dbg_free(filters_copy);
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return NULL;
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}
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cf->passes_filter = _and_p;
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cf->destroy = _destroy;
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cf->private = filters_copy;
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return cf;
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}
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