SoW-2019-0002: Dynamic Snapshot

[lttng-tools.git] / src / lib / lttng-ctl / filter / filter-visitor-ir-validate-globbing.c

diff --git a/src/lib/lttng-ctl/filter/filter-visitor-ir-validate-globbing.c b/src/lib/lttng-ctl/filter/filter-visitor-ir-validate-globbing.c
deleted file mode 100644 (file)
index 3e749a4..0000000
--- a/src/lib/lttng-ctl/filter/filter-visitor-ir-validate-globbing.c
+++ /dev/null
@@ -1,112 +0,0 @@
-/*
- * filter-visitor-ir-validate-globbing.c
- *
- * LTTng filter IR validate globbing
- *
- * Copyright 2017 Philippe Proulx <pproulx@efficios.com>
- *
- * SPDX-License-Identifier: LGPL-2.1-only
- *
- */
-
-#include <stdio.h>
-#include <unistd.h>
-#include <string.h>
-#include <stdlib.h>
-#include <assert.h>
-#include <errno.h>
-#include <inttypes.h>
-
-#include <common/macros.h>
-
-#include "filter-ast.h"
-#include "filter-parser.h"
-#include "filter-ir.h"
-
-static
-int validate_globbing(struct ir_op *node)
-{
-       int ret;
-
-       switch (node->op) {
-       case IR_OP_UNKNOWN:
-       default:
-               fprintf(stderr, "[error] %s: unknown op type\n", __func__);
-               return -EINVAL;
-
-       case IR_OP_ROOT:
-               return validate_globbing(node->u.root.child);
-       case IR_OP_LOAD:
-               return 0;
-       case IR_OP_UNARY:
-               return validate_globbing(node->u.unary.child);
-       case IR_OP_BINARY:
-       {
-               struct ir_op *left = node->u.binary.left;
-               struct ir_op *right = node->u.binary.right;
-
-               if (left->op == IR_OP_LOAD && right->op == IR_OP_LOAD &&
-                               left->data_type == IR_DATA_STRING &&
-                               right->data_type == IR_DATA_STRING) {
-                       /* Test 1. */
-                       if (left->u.load.u.string.type == IR_LOAD_STRING_TYPE_GLOB_STAR &&
-                                       right->u.load.u.string.type != IR_LOAD_STRING_TYPE_PLAIN) {
-                               fprintf(stderr, "[error] Cannot compare two globbing patterns\n");
-                               return -1;
-                       }
-
-                       if (right->u.load.u.string.type == IR_LOAD_STRING_TYPE_GLOB_STAR &&
-                                       left->u.load.u.string.type != IR_LOAD_STRING_TYPE_PLAIN) {
-                               fprintf(stderr, "[error] Cannot compare two globbing patterns\n");
-                               return -1;
-                       }
-               }
-
-               if ((left->op == IR_OP_LOAD && left->data_type == IR_DATA_STRING) ||
-                               (right->op == IR_OP_LOAD && right->data_type == IR_DATA_STRING)) {
-                       if ((left->op == IR_OP_LOAD && left->u.load.u.string.type == IR_LOAD_STRING_TYPE_GLOB_STAR) ||
-                                       (right->op == IR_OP_LOAD && right->u.load.u.string.type == IR_LOAD_STRING_TYPE_GLOB_STAR)) {
-                               /* Test 2. */
-                               if (node->u.binary.type != AST_OP_EQ &&
-                                               node->u.binary.type != AST_OP_NE) {
-                                       fprintf(stderr, "[error] Only the `==` and `!=` operators are allowed with a globbing pattern\n");
-                                       return -1;
-                               }
-                       }
-               }
-
-               ret = validate_globbing(left);
-               if (ret) {
-                       return ret;
-               }
-
-               return validate_globbing(right);
-       }
-       case IR_OP_LOGICAL:
-               ret = validate_globbing(node->u.logical.left);
-               if (ret)
-                       return ret;
-               return validate_globbing(node->u.logical.right);
-       }
-}
-
-/*
- * This function recursively validates that:
- *
- * 1. When there's a binary operation between two literal strings,
- *    if one of them has the IR_LOAD_STRING_TYPE_GLOB_STAR type,
- *    the other one has the IR_LOAD_STRING_TYPE_PLAIN type.
- *
- *    In other words, you cannot compare two globbing patterns, except
- *    for two globbing patterns with only a star at the end for backward
- *    compatibility reasons.
- *
- * 2. When there's a binary operation between two literal strings, if
- *    one of them is a (full) star globbing pattern, the binary
- *    operation is either == or !=.
- */
-LTTNG_HIDDEN
-int filter_visitor_ir_validate_globbing(struct filter_parser_ctx *ctx)
-{
-       return validate_globbing(ctx->ir_root);
-}