#include <stddef.h>
#include <stdint.h>
#include <urcu-pointer.h>
+#include <byteswap.h>
+
#include <lttng/ust-endian.h>
+#include <lttng/ust-events.h>
+
#include "lttng-filter.h"
#include "string-utils.h"
+
/*
* -1: wildcard found.
* -2: unknown escape char.
return diff;
}
-uint64_t lttng_filter_false(void *filter_data,
+uint64_t lttng_filter_interpret_bytecode_false(void *filter_data,
const char *filter_stack_data)
{
return LTTNG_FILTER_DISCARD;
ctx_field = &ctx->fields[idx];
field = &ctx_field->event_field;
ptr->type = LOAD_OBJECT;
- /* field is only used for types nested within variants. */
- ptr->field = NULL;
+ ptr->field = field;
switch (field->type.atype) {
case atype_integer:
int ret;
const struct filter_get_index_data *gid;
- /*
- * Types nested within variants need to perform dynamic lookup
- * based on the field descriptions. LTTng-UST does not implement
- * variants for now.
- */
- if (stack_top->u.ptr.field)
- return -EINVAL;
gid = (const struct filter_get_index_data *) &runtime->data[index];
switch (stack_top->u.ptr.type) {
case LOAD_OBJECT:
stack_top->u.ptr.ptr = ptr;
stack_top->u.ptr.object_type = gid->elem.type;
stack_top->u.ptr.rev_bo = gid->elem.rev_bo;
- /* field is only used for types nested within variants. */
+ assert(stack_top->u.ptr.field->type.atype == atype_array ||
+ stack_top->u.ptr.field->type.atype == atype_array_nestable);
stack_top->u.ptr.field = NULL;
break;
}
stack_top->u.ptr.ptr = ptr;
stack_top->u.ptr.object_type = gid->elem.type;
stack_top->u.ptr.rev_bo = gid->elem.rev_bo;
- /* field is only used for types nested within variants. */
+ assert(stack_top->u.ptr.field->type.atype == atype_sequence ||
+ stack_top->u.ptr.field->type.atype == atype_sequence_nestable);
stack_top->u.ptr.field = NULL;
break;
}
stack_top->u.ptr.ptr = *(const char * const *) stack_top->u.ptr.ptr;
stack_top->u.ptr.object_type = gid->elem.type;
stack_top->u.ptr.type = LOAD_OBJECT;
- /* field is only used for types nested within variants. */
- stack_top->u.ptr.field = NULL;
+ stack_top->u.ptr.field = gid->field;
break;
}
return 0;
return ret;
}
+static
+int lttng_bytecode_interpret_format_output(struct estack_entry *ax,
+ struct lttng_interpreter_output *output)
+{
+ int ret;
+
+again:
+ switch (ax->type) {
+ case REG_S64:
+ output->type = LTTNG_INTERPRETER_TYPE_S64;
+ output->u.s = ax->u.v;
+ break;
+ case REG_U64:
+ output->type = LTTNG_INTERPRETER_TYPE_U64;
+ output->u.u = (uint64_t) ax->u.v;
+ break;
+ case REG_DOUBLE:
+ output->type = LTTNG_INTERPRETER_TYPE_DOUBLE;
+ output->u.d = ax->u.d;
+ break;
+ case REG_STRING:
+ output->type = LTTNG_INTERPRETER_TYPE_STRING;
+ output->u.str.str = ax->u.s.str;
+ output->u.str.len = ax->u.s.seq_len;
+ break;
+ case REG_PTR:
+ switch (ax->u.ptr.object_type) {
+ case OBJECT_TYPE_S8:
+ case OBJECT_TYPE_S16:
+ case OBJECT_TYPE_S32:
+ case OBJECT_TYPE_S64:
+ case OBJECT_TYPE_U8:
+ case OBJECT_TYPE_U16:
+ case OBJECT_TYPE_U32:
+ case OBJECT_TYPE_U64:
+ case OBJECT_TYPE_DOUBLE:
+ case OBJECT_TYPE_STRING:
+ case OBJECT_TYPE_STRING_SEQUENCE:
+ ret = dynamic_load_field(ax);
+ if (ret)
+ return ret;
+ /* Retry after loading ptr into stack top. */
+ goto again;
+ case OBJECT_TYPE_SEQUENCE:
+ output->type = LTTNG_INTERPRETER_TYPE_SEQUENCE;
+ output->u.sequence.ptr = *(const char **) (ax->u.ptr.ptr + sizeof(unsigned long));
+ output->u.sequence.nr_elem = *(unsigned long *) ax->u.ptr.ptr;
+ output->u.sequence.nested_type = ax->u.ptr.field->type.u.sequence_nestable.elem_type;
+ break;
+ case OBJECT_TYPE_ARRAY:
+ /* Skip count (unsigned long) */
+ output->type = LTTNG_INTERPRETER_TYPE_SEQUENCE;
+ output->u.sequence.ptr = *(const char **) (ax->u.ptr.ptr + sizeof(unsigned long));
+ output->u.sequence.nr_elem = ax->u.ptr.field->type.u.array_nestable.length;
+ output->u.sequence.nested_type = ax->u.ptr.field->type.u.array_nestable.elem_type;
+ break;
+ case OBJECT_TYPE_STRUCT:
+ case OBJECT_TYPE_VARIANT:
+ default:
+ return -EINVAL;
+ }
+
+ break;
+ case REG_STAR_GLOB_STRING:
+ case REG_UNKNOWN:
+ default:
+ return -EINVAL;
+ }
+
+ return LTTNG_FILTER_RECORD_FLAG;
+}
+
/*
* Return 0 (discard), or raise the 0x1 flag (log event).
* Currently, other flags are kept for future extensions and have no
* effect.
*/
-uint64_t lttng_filter_interpret_bytecode(void *filter_data,
- const char *filter_stack_data)
+static
+uint64_t bytecode_interpret(void *interpreter_data,
+ const char *interpreter_stack_data,
+ struct lttng_interpreter_output *output)
{
- struct bytecode_runtime *bytecode = filter_data;
+ struct bytecode_runtime *bytecode = interpreter_data;
struct lttng_ctx *ctx = rcu_dereference(*bytecode->p.pctx);
void *pc, *next_pc, *start_pc;
int ret = -EINVAL;
break;
case REG_DOUBLE:
case REG_STRING:
+ case REG_PTR:
+ if (!output) {
+ ret = -EINVAL;
+ goto end;
+ }
+ retval = 0;
+ break;
case REG_STAR_GLOB_STRING:
+ case REG_UNKNOWN:
default:
ret = -EINVAL;
goto end;
ref->offset);
estack_push(stack, top, ax, bx, ax_t, bx_t);
estack_ax(stack, top)->u.s.str =
- *(const char * const *) &filter_stack_data[ref->offset];
+ *(const char * const *) &interpreter_stack_data[ref->offset];
if (unlikely(!estack_ax(stack, top)->u.s.str)) {
dbg_printf("Filter warning: loading a NULL string.\n");
ret = -EINVAL;
ref->offset);
estack_push(stack, top, ax, bx, ax_t, bx_t);
estack_ax(stack, top)->u.s.seq_len =
- *(unsigned long *) &filter_stack_data[ref->offset];
+ *(unsigned long *) &interpreter_stack_data[ref->offset];
estack_ax(stack, top)->u.s.str =
- *(const char **) (&filter_stack_data[ref->offset
+ *(const char **) (&interpreter_stack_data[ref->offset
+ sizeof(unsigned long)]);
estack_ax_t = REG_STRING;
if (unlikely(!estack_ax(stack, top)->u.s.str)) {
ref->offset);
estack_push(stack, top, ax, bx, ax_t, bx_t);
estack_ax_v =
- ((struct literal_numeric *) &filter_stack_data[ref->offset])->v;
+ ((struct literal_numeric *) &interpreter_stack_data[ref->offset])->v;
estack_ax_t = REG_S64;
dbg_printf("ref load s64 %" PRIi64 "\n", estack_ax_v);
next_pc += sizeof(struct load_op) + sizeof(struct field_ref);
dbg_printf("load field ref offset %u type double\n",
ref->offset);
estack_push(stack, top, ax, bx, ax_t, bx_t);
- memcpy(&estack_ax(stack, top)->u.d, &filter_stack_data[ref->offset],
+ memcpy(&estack_ax(stack, top)->u.d, &interpreter_stack_data[ref->offset],
sizeof(struct literal_double));
estack_ax_t = REG_DOUBLE;
dbg_printf("ref load double %g\n", estack_ax(stack, top)->u.d);
dbg_printf("op get app payload root\n");
estack_push(stack, top, ax, bx, ax_t, bx_t);
estack_ax(stack, top)->u.ptr.type = LOAD_ROOT_PAYLOAD;
- estack_ax(stack, top)->u.ptr.ptr = filter_stack_data;
+ estack_ax(stack, top)->u.ptr.ptr = interpreter_stack_data;
/* "field" only needed for variants. */
estack_ax(stack, top)->u.ptr.field = NULL;
estack_ax_t = REG_PTR;
/* Return _DISCARD on error. */
if (ret)
return LTTNG_FILTER_DISCARD;
+
+ if (output) {
+ return lttng_bytecode_interpret_format_output(estack_ax(stack, top),
+ output);
+ }
+
return retval;
}
+uint64_t lttng_filter_interpret_bytecode(void *filter_data,
+ const char *filter_stack_data)
+{
+ return bytecode_interpret(filter_data, filter_stack_data, NULL);
+}
+
#undef START_OP
#undef OP
#undef PO
projects / deliverable / lttng-ust.git / blobdiff