bsnmp/lib/snmpagent.c

77  * Set context
79 struct context {
93  * Allocate a context
98 	struct context *context;
100 	if ((context = malloc(sizeof(*context))) == NULL)
103 	memset(context, 0, sizeof(*context));
104 	TAILQ_INIT(&context->dlist);
106 	return (&context->ctx);
206 	struct context context;
209 	memset(&context, 0, sizeof(context));
210 	context.ctx.data = data;
236 			ret = (*tp->op)(&context.ctx, &resp->bindings[i],
327 do_getnext(struct context *context, const struct snmp_value *inb,
348 			ret = (*tp->op)(&context->ctx, outb, tp->oid.len,
352 			ret = (*tp->op)(&context->ctx, outb, tp->oid.len,
399 	struct context context;
404 	memset(&context, 0, sizeof(context));
405 	context.ctx.data = data;
413 		result = do_getnext(&context, &pdu->bindings[i],
448 	struct context context;
456 	memset(&context, 0, sizeof(context));
457 	context.ctx.data = data;
470 		result = do_getnext(&context, &pdu->bindings[i],
508 				result = do_getnext(&context, &pdu->bindings[i],
511 				result = do_getnext(&context,
552 rollback(struct context *context, struct snmp_pdu *pdu, u_int i)
560 		np = context->node[i];
562 		context->ctx.scratch = &context->scratch[i];
564 		ret = (*np->op)(&context->ctx, b, np->oid.len, np->index,
584 	struct context *context = (struct context *)ctx;
587 	TAILQ_FOREACH(context->depend, &context->dlist, link) {
588 		ctx->dep = &context->depend->dep;
594 		ret = context->depend->func(ctx, ctx->dep, SNMP_DEPOP_COMMIT);
611 	struct context *context = (struct context *)ctx;
617 	while ((context->depend =
618 	    TAILQ_PREV(context->depend, depend_list, link)) != NULL) {
619 		ctx->dep = &context->depend->dep;
625 		ret = context->depend->func(ctx, ctx->dep, SNMP_DEPOP_ROLLBACK);
641 	struct context *context = (struct context *)ctx;
644 	while ((d = TAILQ_FIRST(&context->dlist)) != NULL) {
647 		TAILQ_REMOVE(&context->dlist, d, link);
662 	struct context context;
667 	memset(&context, 0, sizeof(context));
668 	TAILQ_INIT(&context.dlist);
669 	context.ctx.data = data;
683 		if ((np = context.node[i] = find_node(b, &except)) == NULL) {
762 	context.ctx.code = SNMP_RET_OK;
770 		np = context.node[i];
772 		context.ctx.var_index = i + 1;
773 		context.ctx.scratch = &context.scratch[i];
775 		ret = (*np->op)(&context.ctx, b, np->oid.len, np->index,
831 			rollback(&context, pdu, i);
834 			context.ctx.code = SNMP_RET_ERR;
846 	if ((ret = snmp_dep_commit(&context.ctx)) != SNMP_ERR_NOERROR) {
848 		pdu->error_index = context.ctx.var_index;
850 		if ((ret = snmp_dep_rollback(&context.ctx)) != SNMP_ERR_NOERROR) {
856 		rollback(&context, pdu, i);
859 		context.ctx.code = SNMP_RET_ERR;
874 		np = context.node[i];
876 		context.ctx.var_index = i + 1;
877 		context.ctx.scratch = &context.scratch[i];
879 		ret = (*np->op)(&context.ctx, b, np->oid.len, np->index,
891 		context.ctx.code = SNMP_RET_IGN;
898 	snmp_dep_finish(&context.ctx);
901 		snmp_debug("set: returning %d", context.ctx.code);
903 	return (context.ctx.code);
912 	struct context *context;
915 	context = (struct context *)(void *)
916 	    ((char *)ctx - offsetof(struct context, ctx));
922 	TAILQ_FOREACH(d, &context->dlist, link)
946 	TAILQ_INSERT_TAIL(&context->dlist, d, link);