X-Git-Url: http://git.lttng.org./?a=blobdiff_plain;f=liblttng-ust%2Flttng-filter-validator.c;h=6cdfd8c164764e075bab11a5cb8234c51765890f;hb=2b90f1d34356963d8cac98fb409689a5c3ebd2ac;hp=a41deb5e7ac54bdd1df2b8a842f368d3a556fd76;hpb=71c1ceeb09675681606ac8c81cbc6fcb363da9e3;p=lttng-ust.git

diff --git a/liblttng-ust/lttng-filter-validator.c b/liblttng-ust/lttng-filter-validator.c
index a41deb5e..6cdfd8c1 100644
--- a/liblttng-ust/lttng-filter-validator.c
+++ b/liblttng-ust/lttng-filter-validator.c
@@ -190,7 +190,7 @@ int bytecode_validate_overflow(struct bytecode_runtime *bytecode,
 	{
 		if (unlikely(pc + sizeof(struct return_op)
 				> start_pc + bytecode->len)) {
-			ret = -EINVAL;
+			ret = -ERANGE;
 		}
 		break;
 	}
@@ -237,10 +237,22 @@ int bytecode_validate_overflow(struct bytecode_runtime *bytecode,
 	case FILTER_OP_LT_DOUBLE:
 	case FILTER_OP_GE_DOUBLE:
 	case FILTER_OP_LE_DOUBLE:
+	case FILTER_OP_EQ_DOUBLE_S64:
+	case FILTER_OP_NE_DOUBLE_S64:
+	case FILTER_OP_GT_DOUBLE_S64:
+	case FILTER_OP_LT_DOUBLE_S64:
+	case FILTER_OP_GE_DOUBLE_S64:
+	case FILTER_OP_LE_DOUBLE_S64:
+	case FILTER_OP_EQ_S64_DOUBLE:
+	case FILTER_OP_NE_S64_DOUBLE:
+	case FILTER_OP_GT_S64_DOUBLE:
+	case FILTER_OP_LT_S64_DOUBLE:
+	case FILTER_OP_GE_S64_DOUBLE:
+	case FILTER_OP_LE_S64_DOUBLE:
 	{
 		if (unlikely(pc + sizeof(struct binary_op)
 				> start_pc + bytecode->len)) {
-			ret = -EINVAL;
+			ret = -ERANGE;
 		}
 		break;
 	}
@@ -258,7 +270,7 @@ int bytecode_validate_overflow(struct bytecode_runtime *bytecode,
 	{
 		if (unlikely(pc + sizeof(struct unary_op)
 				> start_pc + bytecode->len)) {
-			ret = -EINVAL;
+			ret = -ERANGE;
 		}
 		break;
 	}
@@ -269,30 +281,41 @@ int bytecode_validate_overflow(struct bytecode_runtime *bytecode,
 	{
 		if (unlikely(pc + sizeof(struct logical_op)
 				> start_pc + bytecode->len)) {
-			ret = -EINVAL;
+			ret = -ERANGE;
 		}
 		break;
 	}
 
-	/* load */
+	/* load field ref */
 	case FILTER_OP_LOAD_FIELD_REF:
 	{
 		ERR("Unknown field ref type\n");
 		ret = -EINVAL;
 		break;
 	}
+	/* get context ref */
+	case FILTER_OP_GET_CONTEXT_REF:
+	{
+		ERR("Unknown field ref type\n");
+		ret = -EINVAL;
+		break;
+	}
 	case FILTER_OP_LOAD_FIELD_REF_STRING:
 	case FILTER_OP_LOAD_FIELD_REF_SEQUENCE:
 	case FILTER_OP_LOAD_FIELD_REF_S64:
 	case FILTER_OP_LOAD_FIELD_REF_DOUBLE:
+	case FILTER_OP_GET_CONTEXT_REF_STRING:
+	case FILTER_OP_GET_CONTEXT_REF_S64:
+	case FILTER_OP_GET_CONTEXT_REF_DOUBLE:
 	{
 		if (unlikely(pc + sizeof(struct load_op) + sizeof(struct field_ref)
 				> start_pc + bytecode->len)) {
-			ret = -EINVAL;
+			ret = -ERANGE;
 		}
 		break;
 	}
 
+	/* load from immediate operand */
 	case FILTER_OP_LOAD_STRING:
 	{
 		struct load_op *insn = (struct load_op *) pc;
@@ -300,7 +323,7 @@ int bytecode_validate_overflow(struct bytecode_runtime *bytecode,
 
 		if (unlikely(pc + sizeof(struct load_op)
 				> start_pc + bytecode->len)) {
-			ret = -EINVAL;
+			ret = -ERANGE;
 			break;
 		}
 
@@ -308,7 +331,7 @@ int bytecode_validate_overflow(struct bytecode_runtime *bytecode,
 		str_len = strnlen(insn->data, maxlen);
 		if (unlikely(str_len >= maxlen)) {
 			/* Final '\0' not found within range */
-			ret = -EINVAL;
+			ret = -ERANGE;
 		}
 		break;
 	}
@@ -317,7 +340,7 @@ int bytecode_validate_overflow(struct bytecode_runtime *bytecode,
 	{
 		if (unlikely(pc + sizeof(struct load_op) + sizeof(struct literal_numeric)
 				> start_pc + bytecode->len)) {
-			ret = -EINVAL;
+			ret = -ERANGE;
 		}
 		break;
 	}
@@ -326,7 +349,7 @@ int bytecode_validate_overflow(struct bytecode_runtime *bytecode,
 	{
 		if (unlikely(pc + sizeof(struct load_op) + sizeof(struct literal_double)
 				> start_pc + bytecode->len)) {
-			ret = -EINVAL;
+			ret = -ERANGE;
 		}
 		break;
 	}
@@ -337,10 +360,11 @@ int bytecode_validate_overflow(struct bytecode_runtime *bytecode,
 	{
 		if (unlikely(pc + sizeof(struct cast_op)
 				> start_pc + bytecode->len)) {
-			ret = -EINVAL;
+			ret = -ERANGE;
 		}
 		break;
 	}
+
 	}
 
 	return ret;
@@ -508,14 +532,48 @@ int validate_instruction_context(struct bytecode_runtime *bytecode,
 			ret = -EINVAL;
 			goto end;
 		}
-		if ((vstack_ax(stack)->type != REG_DOUBLE && vstack_ax(stack)->type != REG_S64)
-				|| (vstack_bx(stack)-> type != REG_DOUBLE && vstack_bx(stack)->type != REG_S64)) {
-			ERR("Unexpected register type for double comparator\n");
+		if (vstack_ax(stack)->type != REG_DOUBLE && vstack_bx(stack)->type != REG_DOUBLE) {
+			ERR("Double operator should have two double registers\n");
 			ret = -EINVAL;
 			goto end;
 		}
-		if (vstack_ax(stack)->type != REG_DOUBLE && vstack_bx(stack)->type != REG_DOUBLE) {
-			ERR("Double operator should have at least one double register\n");
+		break;
+	}
+
+	case FILTER_OP_EQ_DOUBLE_S64:
+	case FILTER_OP_NE_DOUBLE_S64:
+	case FILTER_OP_GT_DOUBLE_S64:
+	case FILTER_OP_LT_DOUBLE_S64:
+	case FILTER_OP_GE_DOUBLE_S64:
+	case FILTER_OP_LE_DOUBLE_S64:
+	{
+		if (!vstack_ax(stack) || !vstack_bx(stack)) {
+			ERR("Empty stack\n");
+			ret = -EINVAL;
+			goto end;
+		}
+		if (vstack_ax(stack)->type != REG_S64 && vstack_bx(stack)->type != REG_DOUBLE) {
+			ERR("Double-S64 operator has unexpected register types\n");
+			ret = -EINVAL;
+			goto end;
+		}
+		break;
+	}
+
+	case FILTER_OP_EQ_S64_DOUBLE:
+	case FILTER_OP_NE_S64_DOUBLE:
+	case FILTER_OP_GT_S64_DOUBLE:
+	case FILTER_OP_LT_S64_DOUBLE:
+	case FILTER_OP_GE_S64_DOUBLE:
+	case FILTER_OP_LE_S64_DOUBLE:
+	{
+		if (!vstack_ax(stack) || !vstack_bx(stack)) {
+			ERR("Empty stack\n");
+			ret = -EINVAL;
+			goto end;
+		}
+		if (vstack_ax(stack)->type != REG_DOUBLE && vstack_bx(stack)->type != REG_S64) {
+			ERR("S64-Double operator has unexpected register types\n");
 			ret = -EINVAL;
 			goto end;
 		}
@@ -611,7 +669,7 @@ int validate_instruction_context(struct bytecode_runtime *bytecode,
 		break;
 	}
 
-	/* load */
+	/* load field ref */
 	case FILTER_OP_LOAD_FIELD_REF:
 	{
 		ERR("Unknown field ref type\n");
@@ -647,6 +705,7 @@ int validate_instruction_context(struct bytecode_runtime *bytecode,
 		break;
 	}
 
+	/* load from immediate operand */
 	case FILTER_OP_LOAD_STRING:
 	{
 		break;
@@ -701,6 +760,41 @@ int validate_instruction_context(struct bytecode_runtime *bytecode,
 		break;
 	}
 
+	/* get context ref */
+	case FILTER_OP_GET_CONTEXT_REF:
+	{
+		ERR("Unknown get context ref type\n");
+		ret = -EINVAL;
+		goto end;
+	}
+	case FILTER_OP_GET_CONTEXT_REF_STRING:
+	{
+		struct load_op *insn = (struct load_op *) pc;
+		struct field_ref *ref = (struct field_ref *) insn->data;
+
+		dbg_printf("Validate get context ref offset %u type string\n",
+			ref->offset);
+		break;
+	}
+	case FILTER_OP_GET_CONTEXT_REF_S64:
+	{
+		struct load_op *insn = (struct load_op *) pc;
+		struct field_ref *ref = (struct field_ref *) insn->data;
+
+		dbg_printf("Validate get context ref offset %u type s64\n",
+			ref->offset);
+		break;
+	}
+	case FILTER_OP_GET_CONTEXT_REF_DOUBLE:
+	{
+		struct load_op *insn = (struct load_op *) pc;
+		struct field_ref *ref = (struct field_ref *) insn->data;
+
+		dbg_printf("Validate get context ref offset %u type double\n",
+			ref->offset);
+		break;
+	}
+
 	}
 end:
 	return ret;
@@ -834,6 +928,18 @@ int exec_insn(struct bytecode_runtime *bytecode,
 	case FILTER_OP_LT_DOUBLE:
 	case FILTER_OP_GE_DOUBLE:
 	case FILTER_OP_LE_DOUBLE:
+	case FILTER_OP_EQ_DOUBLE_S64:
+	case FILTER_OP_NE_DOUBLE_S64:
+	case FILTER_OP_GT_DOUBLE_S64:
+	case FILTER_OP_LT_DOUBLE_S64:
+	case FILTER_OP_GE_DOUBLE_S64:
+	case FILTER_OP_LE_DOUBLE_S64:
+	case FILTER_OP_EQ_S64_DOUBLE:
+	case FILTER_OP_NE_S64_DOUBLE:
+	case FILTER_OP_GT_S64_DOUBLE:
+	case FILTER_OP_LT_S64_DOUBLE:
+	case FILTER_OP_GE_S64_DOUBLE:
+	case FILTER_OP_LE_S64_DOUBLE:
 	{
 		/* Pop 2, push 1 */
 		if (vstack_pop(stack)) {
@@ -908,15 +1014,23 @@ int exec_insn(struct bytecode_runtime *bytecode,
 		break;
 	}
 
-	/* load */
+	/* load field ref */
 	case FILTER_OP_LOAD_FIELD_REF:
 	{
 		ERR("Unknown field ref type\n");
 		ret = -EINVAL;
 		goto end;
 	}
+	/* get context ref */
+	case FILTER_OP_GET_CONTEXT_REF:
+	{
+		ERR("Unknown get context ref type\n");
+		ret = -EINVAL;
+		goto end;
+	}
 	case FILTER_OP_LOAD_FIELD_REF_STRING:
 	case FILTER_OP_LOAD_FIELD_REF_SEQUENCE:
+	case FILTER_OP_GET_CONTEXT_REF_STRING:
 	{
 		if (vstack_push(stack)) {
 			ret = -EINVAL;
@@ -927,6 +1041,7 @@ int exec_insn(struct bytecode_runtime *bytecode,
 		break;
 	}
 	case FILTER_OP_LOAD_FIELD_REF_S64:
+	case FILTER_OP_GET_CONTEXT_REF_S64:
 	{
 		if (vstack_push(stack)) {
 			ret = -EINVAL;
@@ -937,6 +1052,7 @@ int exec_insn(struct bytecode_runtime *bytecode,
 		break;
 	}
 	case FILTER_OP_LOAD_FIELD_REF_DOUBLE:
+	case FILTER_OP_GET_CONTEXT_REF_DOUBLE:
 	{
 		if (vstack_push(stack)) {
 			ret = -EINVAL;
@@ -947,6 +1063,7 @@ int exec_insn(struct bytecode_runtime *bytecode,
 		break;
 	}
 
+	/* load from immediate operand */
 	case FILTER_OP_LOAD_STRING:
 	{
 		struct load_op *insn = (struct load_op *) pc;
@@ -1041,9 +1158,10 @@ int lttng_filter_validate_bytecode(struct bytecode_runtime *bytecode)
 	start_pc = &bytecode->data[0];
 	for (pc = next_pc = start_pc; pc - start_pc < bytecode->len;
 			pc = next_pc) {
-		if (bytecode_validate_overflow(bytecode, start_pc, pc) != 0) {
-			ERR("filter bytecode overflow\n");
-			ret = -EINVAL;
+		ret = bytecode_validate_overflow(bytecode, start_pc, pc);
+		if (ret != 0) {
+			if (ret == -ERANGE)
+				ERR("filter bytecode overflow\n");
 			goto end;
 		}
 		dbg_printf("Validating op %s (%u)\n",