*/
#define _LGPL_SOURCE
+#include <stddef.h>
+#include <stdint.h>
#include <urcu-pointer.h>
+#include <byteswap.h>
#include "lttng-filter.h"
+#include "string-utils.h"
/*
* -1: wildcard found.
}
}
+/*
+ * Returns SIZE_MAX if the string is null-terminated, or the number of
+ * characters if not.
+ */
+static
+size_t get_str_or_seq_len(const struct estack_entry *entry)
+{
+ return entry->u.s.seq_len;
+}
+
+static
+int stack_star_glob_match(struct estack *stack, int top, const char *cmp_type)
+{
+ const char *pattern;
+ const char *candidate;
+ size_t pattern_len;
+ size_t candidate_len;
+
+ /* Find out which side is the pattern vs. the candidate. */
+ if (estack_ax(stack, top)->u.s.literal_type == ESTACK_STRING_LITERAL_TYPE_STAR_GLOB) {
+ pattern = estack_ax(stack, top)->u.s.str;
+ pattern_len = get_str_or_seq_len(estack_ax(stack, top));
+ candidate = estack_bx(stack, top)->u.s.str;
+ candidate_len = get_str_or_seq_len(estack_bx(stack, top));
+ } else {
+ pattern = estack_bx(stack, top)->u.s.str;
+ pattern_len = get_str_or_seq_len(estack_bx(stack, top));
+ candidate = estack_ax(stack, top)->u.s.str;
+ candidate_len = get_str_or_seq_len(estack_ax(stack, top));
+ }
+
+ /* Perform the match. Returns 0 when the result is true. */
+ return !strutils_star_glob_match(pattern, pattern_len, candidate,
+ candidate_len);
+}
+
static
int stack_strcmp(struct estack *stack, int top, const char *cmp_type)
{
if (q - estack_ax(stack, top)->u.s.str >= estack_ax(stack, top)->u.s.seq_len || *q == '\0') {
return 0;
} else {
- if (estack_ax(stack, top)->u.s.literal) {
+ if (estack_ax(stack, top)->u.s.literal_type ==
+ ESTACK_STRING_LITERAL_TYPE_PLAIN) {
ret = parse_char(&q);
if (ret == -1)
return 0;
}
}
if (unlikely(q - estack_ax(stack, top)->u.s.str >= estack_ax(stack, top)->u.s.seq_len || *q == '\0')) {
- if (estack_bx(stack, top)->u.s.literal) {
+ if (estack_bx(stack, top)->u.s.literal_type ==
+ ESTACK_STRING_LITERAL_TYPE_PLAIN) {
ret = parse_char(&p);
if (ret == -1)
return 0;
}
return 1;
}
- if (estack_bx(stack, top)->u.s.literal) {
+ if (estack_bx(stack, top)->u.s.literal_type ==
+ ESTACK_STRING_LITERAL_TYPE_PLAIN) {
ret = parse_char(&p);
if (ret == -1) {
return 0;
}
/* else compare both char */
}
- if (estack_ax(stack, top)->u.s.literal) {
+ if (estack_ax(stack, top)->u.s.literal_type ==
+ ESTACK_STRING_LITERAL_TYPE_PLAIN) {
ret = parse_char(&q);
if (ret == -1) {
return 0;
*/
#define START_OP \
- start_pc = &bytecode->data[0]; \
+ start_pc = &bytecode->code[0]; \
pc = next_pc = start_pc; \
if (unlikely(pc - start_pc >= bytecode->len)) \
goto end; \
#endif
+static int context_get_index(struct lttng_ctx *ctx,
+ struct load_ptr *ptr,
+ uint32_t idx)
+{
+
+ struct lttng_ctx_field *ctx_field;
+ struct lttng_event_field *field;
+ struct lttng_ctx_value v;
+
+ 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;
+
+ switch (field->type.atype) {
+ case atype_integer:
+ ctx_field->get_value(ctx_field, &v);
+ if (field->type.u.basic.integer.signedness) {
+ ptr->object_type = OBJECT_TYPE_S64;
+ ptr->u.s64 = v.u.s64;
+ ptr->ptr = &ptr->u.s64;
+ } else {
+ ptr->object_type = OBJECT_TYPE_U64;
+ ptr->u.u64 = v.u.s64; /* Cast. */
+ ptr->ptr = &ptr->u.u64;
+ }
+ break;
+ case atype_enum:
+ {
+ const struct lttng_integer_type *itype =
+ &field->type.u.basic.enumeration.container_type;
+
+ ctx_field->get_value(ctx_field, &v);
+ if (itype->signedness) {
+ ptr->object_type = OBJECT_TYPE_S64;
+ ptr->u.s64 = v.u.s64;
+ ptr->ptr = &ptr->u.s64;
+ } else {
+ ptr->object_type = OBJECT_TYPE_U64;
+ ptr->u.u64 = v.u.s64; /* Cast. */
+ ptr->ptr = &ptr->u.u64;
+ }
+ break;
+ }
+ case atype_array:
+ if (field->type.u.array.elem_type.atype != atype_integer) {
+ ERR("Array nesting only supports integer types.");
+ return -EINVAL;
+ }
+ if (field->type.u.array.elem_type.u.basic.integer.encoding == lttng_encode_none) {
+ ERR("Only string arrays are supported for contexts.");
+ return -EINVAL;
+ }
+ ptr->object_type = OBJECT_TYPE_STRING;
+ ctx_field->get_value(ctx_field, &v);
+ ptr->ptr = v.u.str;
+ break;
+ case atype_sequence:
+ if (field->type.u.sequence.elem_type.atype != atype_integer) {
+ ERR("Sequence nesting only supports integer types.");
+ return -EINVAL;
+ }
+ if (field->type.u.sequence.elem_type.u.basic.integer.encoding == lttng_encode_none) {
+ ERR("Only string sequences are supported for contexts.");
+ return -EINVAL;
+ }
+ ptr->object_type = OBJECT_TYPE_STRING;
+ ctx_field->get_value(ctx_field, &v);
+ ptr->ptr = v.u.str;
+ break;
+ case atype_string:
+ ptr->object_type = OBJECT_TYPE_STRING;
+ ctx_field->get_value(ctx_field, &v);
+ ptr->ptr = v.u.str;
+ break;
+ case atype_float:
+ ptr->object_type = OBJECT_TYPE_DOUBLE;
+ ctx_field->get_value(ctx_field, &v);
+ ptr->u.d = v.u.d;
+ ptr->ptr = &ptr->u.d;
+ break;
+ case atype_dynamic:
+ ctx_field->get_value(ctx_field, &v);
+ switch (v.sel) {
+ case LTTNG_UST_DYNAMIC_TYPE_NONE:
+ return -EINVAL;
+ case LTTNG_UST_DYNAMIC_TYPE_S64:
+ ptr->object_type = OBJECT_TYPE_S64;
+ ptr->u.s64 = v.u.s64;
+ ptr->ptr = &ptr->u.s64;
+ dbg_printf("context get index dynamic s64 %" PRIi64 "\n", ptr->u.s64);
+ break;
+ case LTTNG_UST_DYNAMIC_TYPE_DOUBLE:
+ ptr->object_type = OBJECT_TYPE_DOUBLE;
+ ptr->u.d = v.u.d;
+ ptr->ptr = &ptr->u.d;
+ dbg_printf("context get index dynamic double %g\n", ptr->u.d);
+ break;
+ case LTTNG_UST_DYNAMIC_TYPE_STRING:
+ ptr->object_type = OBJECT_TYPE_STRING;
+ ptr->ptr = v.u.str;
+ dbg_printf("context get index dynamic string %s\n", (const char *) ptr->ptr);
+ break;
+ default:
+ dbg_printf("Filter warning: unknown dynamic type (%d).\n", (int) v.sel);
+ return -EINVAL;
+ }
+ break;
+ case atype_struct:
+ ERR("Structure type cannot be loaded.");
+ return -EINVAL;
+ default:
+ ERR("Unknown type: %d", (int) field->type.atype);
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int dynamic_get_index(struct lttng_session *session,
+ struct bytecode_runtime *runtime,
+ uint64_t index, struct estack_entry *stack_top)
+{
+ 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:
+ switch (stack_top->u.ptr.object_type) {
+ case OBJECT_TYPE_ARRAY:
+ {
+ const char *ptr;
+
+ assert(gid->offset < gid->array_len);
+ /* Skip count (unsigned long) */
+ ptr = *(const char **) (stack_top->u.ptr.ptr + sizeof(unsigned long));
+ ptr = ptr + gid->offset;
+ 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. */
+ stack_top->u.ptr.field = NULL;
+ break;
+ }
+ case OBJECT_TYPE_SEQUENCE:
+ {
+ const char *ptr;
+ size_t ptr_seq_len;
+
+ ptr = *(const char **) (stack_top->u.ptr.ptr + sizeof(unsigned long));
+ ptr_seq_len = *(unsigned long *) stack_top->u.ptr.ptr;
+ if (gid->offset >= gid->elem.len * ptr_seq_len) {
+ ret = -EINVAL;
+ goto end;
+ }
+ ptr = ptr + gid->offset;
+ 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. */
+ stack_top->u.ptr.field = NULL;
+ break;
+ }
+ case OBJECT_TYPE_STRUCT:
+ ERR("Nested structures are not supported yet.");
+ ret = -EINVAL;
+ goto end;
+ case OBJECT_TYPE_VARIANT:
+ default:
+ ERR("Unexpected get index type %d",
+ (int) stack_top->u.ptr.object_type);
+ ret = -EINVAL;
+ goto end;
+ }
+ break;
+ case LOAD_ROOT_CONTEXT:
+ case LOAD_ROOT_APP_CONTEXT: /* Fall-through */
+ {
+ struct lttng_ctx *ctx;
+
+ ctx = rcu_dereference(session->ctx);
+ ret = context_get_index(ctx,
+ &stack_top->u.ptr,
+ gid->ctx_index);
+ if (ret) {
+ goto end;
+ }
+ break;
+ }
+ case LOAD_ROOT_PAYLOAD:
+ stack_top->u.ptr.ptr += gid->offset;
+ if (gid->elem.type == OBJECT_TYPE_STRING)
+ 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;
+ break;
+ }
+ return 0;
+
+end:
+ return ret;
+}
+
+static int dynamic_load_field(struct estack_entry *stack_top)
+{
+ int ret;
+
+ switch (stack_top->u.ptr.type) {
+ case LOAD_OBJECT:
+ break;
+ case LOAD_ROOT_CONTEXT:
+ case LOAD_ROOT_APP_CONTEXT:
+ case LOAD_ROOT_PAYLOAD:
+ default:
+ dbg_printf("Filter warning: cannot load root, missing field name.\n");
+ ret = -EINVAL;
+ goto end;
+ }
+ switch (stack_top->u.ptr.object_type) {
+ case OBJECT_TYPE_S8:
+ dbg_printf("op load field s8\n");
+ stack_top->u.v = *(int8_t *) stack_top->u.ptr.ptr;
+ stack_top->type = REG_S64;
+ break;
+ case OBJECT_TYPE_S16:
+ {
+ int16_t tmp;
+
+ dbg_printf("op load field s16\n");
+ tmp = *(int16_t *) stack_top->u.ptr.ptr;
+ if (stack_top->u.ptr.rev_bo)
+ tmp = bswap_16(tmp);
+ stack_top->u.v = tmp;
+ stack_top->type = REG_S64;
+ break;
+ }
+ case OBJECT_TYPE_S32:
+ {
+ int32_t tmp;
+
+ dbg_printf("op load field s32\n");
+ tmp = *(int32_t *) stack_top->u.ptr.ptr;
+ if (stack_top->u.ptr.rev_bo)
+ tmp = bswap_32(tmp);
+ stack_top->u.v = tmp;
+ stack_top->type = REG_S64;
+ break;
+ }
+ case OBJECT_TYPE_S64:
+ {
+ int64_t tmp;
+
+ dbg_printf("op load field s64\n");
+ tmp = *(int64_t *) stack_top->u.ptr.ptr;
+ if (stack_top->u.ptr.rev_bo)
+ tmp = bswap_64(tmp);
+ stack_top->u.v = tmp;
+ stack_top->type = REG_S64;
+ break;
+ }
+ case OBJECT_TYPE_U8:
+ dbg_printf("op load field u8\n");
+ stack_top->u.v = *(uint8_t *) stack_top->u.ptr.ptr;
+ stack_top->type = REG_S64;
+ break;
+ case OBJECT_TYPE_U16:
+ {
+ uint16_t tmp;
+
+ dbg_printf("op load field s16\n");
+ tmp = *(uint16_t *) stack_top->u.ptr.ptr;
+ if (stack_top->u.ptr.rev_bo)
+ tmp = bswap_16(tmp);
+ stack_top->u.v = tmp;
+ stack_top->type = REG_S64;
+ break;
+ }
+ case OBJECT_TYPE_U32:
+ {
+ uint32_t tmp;
+
+ dbg_printf("op load field u32\n");
+ tmp = *(uint32_t *) stack_top->u.ptr.ptr;
+ if (stack_top->u.ptr.rev_bo)
+ tmp = bswap_32(tmp);
+ stack_top->u.v = tmp;
+ stack_top->type = REG_S64;
+ break;
+ }
+ case OBJECT_TYPE_U64:
+ {
+ uint64_t tmp;
+
+ dbg_printf("op load field u64\n");
+ tmp = *(uint64_t *) stack_top->u.ptr.ptr;
+ if (stack_top->u.ptr.rev_bo)
+ tmp = bswap_64(tmp);
+ stack_top->u.v = tmp;
+ stack_top->type = REG_S64;
+ break;
+ }
+ case OBJECT_TYPE_DOUBLE:
+ memcpy(&stack_top->u.d,
+ stack_top->u.ptr.ptr,
+ sizeof(struct literal_double));
+ stack_top->type = REG_DOUBLE;
+ break;
+ case OBJECT_TYPE_STRING:
+ {
+ const char *str;
+
+ dbg_printf("op load field string\n");
+ str = (const char *) stack_top->u.ptr.ptr;
+ stack_top->u.s.str = str;
+ if (unlikely(!stack_top->u.s.str)) {
+ dbg_printf("Filter warning: loading a NULL string.\n");
+ ret = -EINVAL;
+ goto end;
+ }
+ stack_top->u.s.seq_len = SIZE_MAX;
+ stack_top->u.s.literal_type =
+ ESTACK_STRING_LITERAL_TYPE_NONE;
+ stack_top->type = REG_STRING;
+ break;
+ }
+ case OBJECT_TYPE_STRING_SEQUENCE:
+ {
+ const char *ptr;
+
+ dbg_printf("op load field string sequence\n");
+ ptr = stack_top->u.ptr.ptr;
+ stack_top->u.s.seq_len = *(unsigned long *) ptr;
+ stack_top->u.s.str = *(const char **) (ptr + sizeof(unsigned long));
+ stack_top->type = REG_STRING;
+ if (unlikely(!stack_top->u.s.str)) {
+ dbg_printf("Filter warning: loading a NULL sequence.\n");
+ ret = -EINVAL;
+ goto end;
+ }
+ stack_top->u.s.literal_type =
+ ESTACK_STRING_LITERAL_TYPE_NONE;
+ break;
+ }
+ case OBJECT_TYPE_DYNAMIC:
+ /*
+ * Dynamic types in context are looked up
+ * by context get index.
+ */
+ ret = -EINVAL;
+ goto end;
+ case OBJECT_TYPE_SEQUENCE:
+ case OBJECT_TYPE_ARRAY:
+ case OBJECT_TYPE_STRUCT:
+ case OBJECT_TYPE_VARIANT:
+ ERR("Sequences, arrays, struct and variant cannot be loaded (nested types).");
+ ret = -EINVAL;
+ goto end;
+ }
+ return 0;
+
+end:
+ return ret;
+}
+
/*
* Return 0 (discard), or raise the 0x1 flag (log event).
* Currently, other flags are kept for future extensions and have no
[ FILTER_OP_MOD ] = &&LABEL_FILTER_OP_MOD,
[ FILTER_OP_PLUS ] = &&LABEL_FILTER_OP_PLUS,
[ FILTER_OP_MINUS ] = &&LABEL_FILTER_OP_MINUS,
- [ FILTER_OP_RSHIFT ] = &&LABEL_FILTER_OP_RSHIFT,
- [ FILTER_OP_LSHIFT ] = &&LABEL_FILTER_OP_LSHIFT,
- [ FILTER_OP_BIN_AND ] = &&LABEL_FILTER_OP_BIN_AND,
- [ FILTER_OP_BIN_OR ] = &&LABEL_FILTER_OP_BIN_OR,
- [ FILTER_OP_BIN_XOR ] = &&LABEL_FILTER_OP_BIN_XOR,
+ [ FILTER_OP_BIT_RSHIFT ] = &&LABEL_FILTER_OP_BIT_RSHIFT,
+ [ FILTER_OP_BIT_LSHIFT ] = &&LABEL_FILTER_OP_BIT_LSHIFT,
+ [ FILTER_OP_BIT_AND ] = &&LABEL_FILTER_OP_BIT_AND,
+ [ FILTER_OP_BIT_OR ] = &&LABEL_FILTER_OP_BIT_OR,
+ [ FILTER_OP_BIT_XOR ] = &&LABEL_FILTER_OP_BIT_XOR,
/* binary comparators */
[ FILTER_OP_EQ ] = &&LABEL_FILTER_OP_EQ,
[ FILTER_OP_GE_STRING ] = &&LABEL_FILTER_OP_GE_STRING,
[ FILTER_OP_LE_STRING ] = &&LABEL_FILTER_OP_LE_STRING,
+ /* globbing pattern binary comparator */
+ [ FILTER_OP_EQ_STAR_GLOB_STRING ] = &&LABEL_FILTER_OP_EQ_STAR_GLOB_STRING,
+ [ FILTER_OP_NE_STAR_GLOB_STRING ] = &&LABEL_FILTER_OP_NE_STAR_GLOB_STRING,
+
/* s64 binary comparator */
[ FILTER_OP_EQ_S64 ] = &&LABEL_FILTER_OP_EQ_S64,
[ FILTER_OP_NE_S64 ] = &&LABEL_FILTER_OP_NE_S64,
/* load from immediate operand */
[ FILTER_OP_LOAD_STRING ] = &&LABEL_FILTER_OP_LOAD_STRING,
+ [ FILTER_OP_LOAD_STAR_GLOB_STRING ] = &&LABEL_FILTER_OP_LOAD_STAR_GLOB_STRING,
[ FILTER_OP_LOAD_S64 ] = &&LABEL_FILTER_OP_LOAD_S64,
[ FILTER_OP_LOAD_DOUBLE ] = &&LABEL_FILTER_OP_LOAD_DOUBLE,
[ FILTER_OP_GET_CONTEXT_REF_STRING ] = &&LABEL_FILTER_OP_GET_CONTEXT_REF_STRING,
[ FILTER_OP_GET_CONTEXT_REF_S64 ] = &&LABEL_FILTER_OP_GET_CONTEXT_REF_S64,
[ FILTER_OP_GET_CONTEXT_REF_DOUBLE ] = &&LABEL_FILTER_OP_GET_CONTEXT_REF_DOUBLE,
+
+ /* Instructions for recursive traversal through composed types. */
+ [ FILTER_OP_GET_CONTEXT_ROOT ] = &&LABEL_FILTER_OP_GET_CONTEXT_ROOT,
+ [ FILTER_OP_GET_APP_CONTEXT_ROOT ] = &&LABEL_FILTER_OP_GET_APP_CONTEXT_ROOT,
+ [ FILTER_OP_GET_PAYLOAD_ROOT ] = &&LABEL_FILTER_OP_GET_PAYLOAD_ROOT,
+
+ [ FILTER_OP_GET_SYMBOL ] = &&LABEL_FILTER_OP_GET_SYMBOL,
+ [ FILTER_OP_GET_SYMBOL_FIELD ] = &&LABEL_FILTER_OP_GET_SYMBOL_FIELD,
+ [ FILTER_OP_GET_INDEX_U16 ] = &&LABEL_FILTER_OP_GET_INDEX_U16,
+ [ FILTER_OP_GET_INDEX_U64 ] = &&LABEL_FILTER_OP_GET_INDEX_U64,
+
+ [ FILTER_OP_LOAD_FIELD ] = &&LABEL_FILTER_OP_LOAD_FIELD,
+ [ FILTER_OP_LOAD_FIELD_S8 ] = &&LABEL_FILTER_OP_LOAD_FIELD_S8,
+ [ FILTER_OP_LOAD_FIELD_S16 ] = &&LABEL_FILTER_OP_LOAD_FIELD_S16,
+ [ FILTER_OP_LOAD_FIELD_S32 ] = &&LABEL_FILTER_OP_LOAD_FIELD_S32,
+ [ FILTER_OP_LOAD_FIELD_S64 ] = &&LABEL_FILTER_OP_LOAD_FIELD_S64,
+ [ FILTER_OP_LOAD_FIELD_U8 ] = &&LABEL_FILTER_OP_LOAD_FIELD_U8,
+ [ FILTER_OP_LOAD_FIELD_U16 ] = &&LABEL_FILTER_OP_LOAD_FIELD_U16,
+ [ FILTER_OP_LOAD_FIELD_U32 ] = &&LABEL_FILTER_OP_LOAD_FIELD_U32,
+ [ FILTER_OP_LOAD_FIELD_U64 ] = &&LABEL_FILTER_OP_LOAD_FIELD_U64,
+ [ FILTER_OP_LOAD_FIELD_STRING ] = &&LABEL_FILTER_OP_LOAD_FIELD_STRING,
+ [ FILTER_OP_LOAD_FIELD_SEQUENCE ] = &&LABEL_FILTER_OP_LOAD_FIELD_SEQUENCE,
+ [ FILTER_OP_LOAD_FIELD_DOUBLE ] = &&LABEL_FILTER_OP_LOAD_FIELD_DOUBLE,
+
+ [ FILTER_OP_UNARY_BIT_NOT ] = &&LABEL_FILTER_OP_UNARY_BIT_NOT,
+
+ [ FILTER_OP_RETURN_S64 ] = &&LABEL_FILTER_OP_RETURN_S64,
};
#endif /* #ifndef INTERPRETER_USE_SWITCH */
#ifdef INTERPRETER_USE_SWITCH
default:
#endif /* INTERPRETER_USE_SWITCH */
- ERR("unknown bytecode op %u\n",
+ ERR("unknown bytecode op %u",
(unsigned int) *(filter_opcode_t *) pc);
ret = -EINVAL;
goto end;
OP(FILTER_OP_RETURN):
+ /* LTTNG_FILTER_DISCARD or LTTNG_FILTER_RECORD_FLAG */
+ /* Handle dynamic typing. */
+ switch (estack_ax_t) {
+ case REG_S64:
+ retval = !!estack_ax_v;
+ break;
+ case REG_DOUBLE:
+ case REG_STRING:
+ case REG_STAR_GLOB_STRING:
+ default:
+ ret = -EINVAL;
+ goto end;
+ }
+ ret = 0;
+ goto end;
+
+ OP(FILTER_OP_RETURN_S64):
/* LTTNG_FILTER_DISCARD or LTTNG_FILTER_RECORD_FLAG */
retval = !!estack_ax_v;
ret = 0;
OP(FILTER_OP_MOD):
OP(FILTER_OP_PLUS):
OP(FILTER_OP_MINUS):
- OP(FILTER_OP_RSHIFT):
- OP(FILTER_OP_LSHIFT):
- OP(FILTER_OP_BIN_AND):
- OP(FILTER_OP_BIN_OR):
- OP(FILTER_OP_BIN_XOR):
- ERR("unsupported bytecode op %u\n",
+ ERR("unsupported bytecode op %u",
(unsigned int) *(filter_opcode_t *) pc);
ret = -EINVAL;
goto end;
JUMP_TO(FILTER_OP_EQ_S64);
case REG_DOUBLE:
JUMP_TO(FILTER_OP_EQ_DOUBLE_S64);
- case REG_STRING:
+ case REG_STRING: /* Fall-through */
+ case REG_STAR_GLOB_STRING:
ret = -EINVAL;
goto end;
default:
JUMP_TO(FILTER_OP_EQ_S64_DOUBLE);
case REG_DOUBLE:
JUMP_TO(FILTER_OP_EQ_DOUBLE);
- case REG_STRING:
+ case REG_STRING: /* Fall-through */
+ case REG_STAR_GLOB_STRING:
ret = -EINVAL;
goto end;
default:
goto end;
case REG_STRING:
JUMP_TO(FILTER_OP_EQ_STRING);
+ case REG_STAR_GLOB_STRING:
+ JUMP_TO(FILTER_OP_EQ_STAR_GLOB_STRING);
+ default:
+ ERR("Unknown filter register type (%d)",
+ (int) estack_bx_t);
+ ret = -EINVAL;
+ goto end;
+ }
+ break;
+ case REG_STAR_GLOB_STRING:
+ switch (estack_bx_t) {
+ case REG_S64: /* Fall-through */
+ case REG_DOUBLE:
+ ret = -EINVAL;
+ goto end;
+ case REG_STRING:
+ JUMP_TO(FILTER_OP_EQ_STAR_GLOB_STRING);
+ case REG_STAR_GLOB_STRING:
+ ret = -EINVAL;
+ goto end;
default:
ERR("Unknown filter register type (%d)",
(int) estack_bx_t);
JUMP_TO(FILTER_OP_NE_S64);
case REG_DOUBLE:
JUMP_TO(FILTER_OP_NE_DOUBLE_S64);
- case REG_STRING:
+ case REG_STRING: /* Fall-through */
+ case REG_STAR_GLOB_STRING:
ret = -EINVAL;
goto end;
default:
JUMP_TO(FILTER_OP_NE_S64_DOUBLE);
case REG_DOUBLE:
JUMP_TO(FILTER_OP_NE_DOUBLE);
- case REG_STRING:
+ case REG_STRING: /* Fall-through */
+ case REG_STAR_GLOB_STRING:
ret = -EINVAL;
goto end;
default:
goto end;
case REG_STRING:
JUMP_TO(FILTER_OP_NE_STRING);
+ case REG_STAR_GLOB_STRING:
+ JUMP_TO(FILTER_OP_NE_STAR_GLOB_STRING);
+ default:
+ ERR("Unknown filter register type (%d)",
+ (int) estack_bx_t);
+ ret = -EINVAL;
+ goto end;
+ }
+ break;
+ case REG_STAR_GLOB_STRING:
+ switch (estack_bx_t) {
+ case REG_S64: /* Fall-through */
+ case REG_DOUBLE:
+ ret = -EINVAL;
+ goto end;
+ case REG_STRING:
+ JUMP_TO(FILTER_OP_NE_STAR_GLOB_STRING);
+ case REG_STAR_GLOB_STRING:
+ ret = -EINVAL;
+ goto end;
default:
ERR("Unknown filter register type (%d)",
(int) estack_bx_t);
JUMP_TO(FILTER_OP_GT_S64);
case REG_DOUBLE:
JUMP_TO(FILTER_OP_GT_DOUBLE_S64);
- case REG_STRING:
+ case REG_STRING: /* Fall-through */
+ case REG_STAR_GLOB_STRING:
ret = -EINVAL;
goto end;
default:
JUMP_TO(FILTER_OP_GT_S64_DOUBLE);
case REG_DOUBLE:
JUMP_TO(FILTER_OP_GT_DOUBLE);
- case REG_STRING:
+ case REG_STRING: /* Fall-through */
+ case REG_STAR_GLOB_STRING:
ret = -EINVAL;
goto end;
default:
case REG_STRING:
switch (estack_bx_t) {
case REG_S64: /* Fall-through */
- case REG_DOUBLE:
+ case REG_DOUBLE: /* Fall-through */
+ case REG_STAR_GLOB_STRING:
ret = -EINVAL;
goto end;
case REG_STRING:
JUMP_TO(FILTER_OP_LT_S64);
case REG_DOUBLE:
JUMP_TO(FILTER_OP_LT_DOUBLE_S64);
- case REG_STRING:
+ case REG_STRING: /* Fall-through */
+ case REG_STAR_GLOB_STRING:
ret = -EINVAL;
goto end;
default:
JUMP_TO(FILTER_OP_LT_S64_DOUBLE);
case REG_DOUBLE:
JUMP_TO(FILTER_OP_LT_DOUBLE);
- case REG_STRING:
+ case REG_STRING: /* Fall-through */
+ case REG_STAR_GLOB_STRING:
ret = -EINVAL;
goto end;
default:
case REG_STRING:
switch (estack_bx_t) {
case REG_S64: /* Fall-through */
- case REG_DOUBLE:
+ case REG_DOUBLE: /* Fall-through */
+ case REG_STAR_GLOB_STRING:
ret = -EINVAL;
goto end;
case REG_STRING:
JUMP_TO(FILTER_OP_GE_S64);
case REG_DOUBLE:
JUMP_TO(FILTER_OP_GE_DOUBLE_S64);
- case REG_STRING:
+ case REG_STRING: /* Fall-through */
+ case REG_STAR_GLOB_STRING:
ret = -EINVAL;
goto end;
default:
JUMP_TO(FILTER_OP_GE_S64_DOUBLE);
case REG_DOUBLE:
JUMP_TO(FILTER_OP_GE_DOUBLE);
- case REG_STRING:
+ case REG_STRING: /* Fall-through */
+ case REG_STAR_GLOB_STRING:
ret = -EINVAL;
goto end;
default:
case REG_STRING:
switch (estack_bx_t) {
case REG_S64: /* Fall-through */
- case REG_DOUBLE:
+ case REG_DOUBLE: /* Fall-through */
+ case REG_STAR_GLOB_STRING:
ret = -EINVAL;
goto end;
case REG_STRING:
JUMP_TO(FILTER_OP_LE_S64);
case REG_DOUBLE:
JUMP_TO(FILTER_OP_LE_DOUBLE_S64);
- case REG_STRING:
+ case REG_STRING: /* Fall-through */
+ case REG_STAR_GLOB_STRING:
ret = -EINVAL;
goto end;
default:
JUMP_TO(FILTER_OP_LE_S64_DOUBLE);
case REG_DOUBLE:
JUMP_TO(FILTER_OP_LE_DOUBLE);
- case REG_STRING:
+ case REG_STRING: /* Fall-through */
+ case REG_STAR_GLOB_STRING:
ret = -EINVAL;
goto end;
default:
case REG_STRING:
switch (estack_bx_t) {
case REG_S64: /* Fall-through */
- case REG_DOUBLE:
+ case REG_DOUBLE: /* Fall-through */
+ case REG_STAR_GLOB_STRING:
ret = -EINVAL;
goto end;
case REG_STRING:
PO;
}
+ OP(FILTER_OP_EQ_STAR_GLOB_STRING):
+ {
+ int res;
+
+ res = (stack_star_glob_match(stack, top, "==") == 0);
+ estack_pop(stack, top, ax, bx, ax_t, bx_t);
+ estack_ax_v = res;
+ estack_ax_t = REG_S64;
+ next_pc += sizeof(struct binary_op);
+ PO;
+ }
+ OP(FILTER_OP_NE_STAR_GLOB_STRING):
+ {
+ int res;
+
+ res = (stack_star_glob_match(stack, top, "!=") != 0);
+ estack_pop(stack, top, ax, bx, ax_t, bx_t);
+ estack_ax_v = res;
+ estack_ax_t = REG_S64;
+ next_pc += sizeof(struct binary_op);
+ PO;
+ }
+
OP(FILTER_OP_EQ_S64):
{
int res;
next_pc += sizeof(struct binary_op);
PO;
}
+ OP(FILTER_OP_BIT_RSHIFT):
+ {
+ int64_t res;
+
+ /* Dynamic typing. */
+ if (estack_ax_t != REG_S64 || estack_bx_t != REG_S64) {
+ ret = -EINVAL;
+ goto end;
+ }
+ /* Catch undefined behavior. */
+ if (caa_unlikely(estack_ax_v < 0 || estack_ax_v >= 64)) {
+ ret = -EINVAL;
+ goto end;
+ }
+ res = ((uint64_t) estack_bx_v >> (uint32_t) estack_ax_v);
+ estack_pop(stack, top, ax, bx, ax_t, bx_t);
+ estack_ax_v = res;
+ estack_ax_t = REG_S64;
+ next_pc += sizeof(struct binary_op);
+ PO;
+ }
+ OP(FILTER_OP_BIT_LSHIFT):
+ {
+ int64_t res;
+
+ /* Dynamic typing. */
+ if (estack_ax_t != REG_S64 || estack_bx_t != REG_S64) {
+ ret = -EINVAL;
+ goto end;
+ }
+ /* Catch undefined behavior. */
+ if (caa_unlikely(estack_ax_v < 0 || estack_ax_v >= 64)) {
+ ret = -EINVAL;
+ goto end;
+ }
+ res = ((uint64_t) estack_bx_v << (uint32_t) estack_ax_v);
+ estack_pop(stack, top, ax, bx, ax_t, bx_t);
+ estack_ax_v = res;
+ estack_ax_t = REG_S64;
+ next_pc += sizeof(struct binary_op);
+ PO;
+ }
+ OP(FILTER_OP_BIT_AND):
+ {
+ int64_t res;
+
+ /* Dynamic typing. */
+ if (estack_ax_t != REG_S64 || estack_bx_t != REG_S64) {
+ ret = -EINVAL;
+ goto end;
+ }
+
+ res = ((uint64_t) estack_bx_v & (uint64_t) estack_ax_v);
+ estack_pop(stack, top, ax, bx, ax_t, bx_t);
+ estack_ax_v = res;
+ estack_ax_t = REG_S64;
+ next_pc += sizeof(struct binary_op);
+ PO;
+ }
+ OP(FILTER_OP_BIT_OR):
+ {
+ int64_t res;
+
+ /* Dynamic typing. */
+ if (estack_ax_t != REG_S64 || estack_bx_t != REG_S64) {
+ ret = -EINVAL;
+ goto end;
+ }
+
+ res = ((uint64_t) estack_bx_v | (uint64_t) estack_ax_v);
+ estack_pop(stack, top, ax, bx, ax_t, bx_t);
+ estack_ax_v = res;
+ estack_ax_t = REG_S64;
+ next_pc += sizeof(struct binary_op);
+ PO;
+ }
+ OP(FILTER_OP_BIT_XOR):
+ {
+ int64_t res;
+
+ /* Dynamic typing. */
+ if (estack_ax_t != REG_S64 || estack_bx_t != REG_S64) {
+ ret = -EINVAL;
+ goto end;
+ }
+
+ res = ((uint64_t) estack_bx_v ^ (uint64_t) estack_ax_v);
+ estack_pop(stack, top, ax, bx, ax_t, bx_t);
+ estack_ax_v = res;
+ estack_ax_t = REG_S64;
+ next_pc += sizeof(struct binary_op);
+ PO;
+ }
/* unary */
OP(FILTER_OP_UNARY_PLUS):
JUMP_TO(FILTER_OP_UNARY_PLUS_S64);
case REG_DOUBLE:
JUMP_TO(FILTER_OP_UNARY_PLUS_DOUBLE);
- case REG_STRING:
+ case REG_STRING: /* Fall-through */
+ case REG_STAR_GLOB_STRING:
ret = -EINVAL;
goto end;
default:
JUMP_TO(FILTER_OP_UNARY_MINUS_S64);
case REG_DOUBLE:
JUMP_TO(FILTER_OP_UNARY_MINUS_DOUBLE);
- case REG_STRING:
+ case REG_STRING: /* Fall-through */
+ case REG_STAR_GLOB_STRING:
ret = -EINVAL;
goto end;
default:
JUMP_TO(FILTER_OP_UNARY_NOT_S64);
case REG_DOUBLE:
JUMP_TO(FILTER_OP_UNARY_NOT_DOUBLE);
- case REG_STRING:
+ case REG_STRING: /* Fall-through */
+ case REG_STAR_GLOB_STRING:
ret = -EINVAL;
goto end;
default:
PO;
}
+ OP(FILTER_OP_UNARY_BIT_NOT):
+ {
+ /* Dynamic typing. */
+ if (estack_ax_t != REG_S64) {
+ ret = -EINVAL;
+ goto end;
+ }
+
+ estack_ax_v = ~(uint64_t) estack_ax_v;
+ next_pc += sizeof(struct unary_op);
+ PO;
+ }
+
OP(FILTER_OP_UNARY_PLUS_S64):
OP(FILTER_OP_UNARY_PLUS_DOUBLE):
{
ret = -EINVAL;
goto end;
}
- estack_ax(stack, top)->u.s.seq_len = UINT_MAX;
- estack_ax(stack, top)->u.s.literal = 0;
+ estack_ax(stack, top)->u.s.seq_len = SIZE_MAX;
+ estack_ax(stack, top)->u.s.literal_type =
+ ESTACK_STRING_LITERAL_TYPE_NONE;
estack_ax_t = REG_STRING;
dbg_printf("ref load string %s\n", estack_ax(stack, top)->u.s.str);
next_pc += sizeof(struct load_op) + sizeof(struct field_ref);
ret = -EINVAL;
goto end;
}
- estack_ax(stack, top)->u.s.literal = 0;
+ estack_ax(stack, top)->u.s.literal_type =
+ ESTACK_STRING_LITERAL_TYPE_NONE;
next_pc += sizeof(struct load_op) + sizeof(struct field_ref);
PO;
}
dbg_printf("load string %s\n", insn->data);
estack_push(stack, top, ax, bx, ax_t, bx_t);
estack_ax(stack, top)->u.s.str = insn->data;
- estack_ax(stack, top)->u.s.seq_len = UINT_MAX;
- estack_ax(stack, top)->u.s.literal = 1;
+ estack_ax(stack, top)->u.s.seq_len = SIZE_MAX;
+ estack_ax(stack, top)->u.s.literal_type =
+ ESTACK_STRING_LITERAL_TYPE_PLAIN;
estack_ax_t = REG_STRING;
next_pc += sizeof(struct load_op) + strlen(insn->data) + 1;
PO;
}
+ OP(FILTER_OP_LOAD_STAR_GLOB_STRING):
+ {
+ struct load_op *insn = (struct load_op *) pc;
+
+ dbg_printf("load globbing pattern %s\n", insn->data);
+ estack_push(stack, top, ax, bx, ax_t, bx_t);
+ estack_ax(stack, top)->u.s.str = insn->data;
+ estack_ax(stack, top)->u.s.seq_len = SIZE_MAX;
+ estack_ax(stack, top)->u.s.literal_type =
+ ESTACK_STRING_LITERAL_TYPE_STAR_GLOB;
+ estack_ax_t = REG_STAR_GLOB_STRING;
+ next_pc += sizeof(struct load_op) + strlen(insn->data) + 1;
+ PO;
+ }
+
OP(FILTER_OP_LOAD_S64):
{
struct load_op *insn = (struct load_op *) pc;
JUMP_TO(FILTER_OP_CAST_NOP);
case REG_DOUBLE:
JUMP_TO(FILTER_OP_CAST_DOUBLE_TO_S64);
- case REG_STRING:
+ case REG_STRING: /* Fall-through */
+ case REG_STAR_GLOB_STRING:
ret = -EINVAL;
goto end;
default:
ret = -EINVAL;
goto end;
}
- estack_ax(stack, top)->u.s.seq_len = UINT_MAX;
- estack_ax(stack, top)->u.s.literal = 0;
+ estack_ax(stack, top)->u.s.seq_len = SIZE_MAX;
+ estack_ax(stack, top)->u.s.literal_type =
+ ESTACK_STRING_LITERAL_TYPE_NONE;
dbg_printf("ref get context dynamic string %s\n", estack_ax(stack, top)->u.s.str);
estack_ax_t = REG_STRING;
break;
ret = -EINVAL;
goto end;
}
- estack_ax(stack, top)->u.s.seq_len = UINT_MAX;
- estack_ax(stack, top)->u.s.literal = 0;
+ estack_ax(stack, top)->u.s.seq_len = SIZE_MAX;
+ estack_ax(stack, top)->u.s.literal_type =
+ ESTACK_STRING_LITERAL_TYPE_NONE;
estack_ax_t = REG_STRING;
dbg_printf("ref get context string %s\n", estack_ax(stack, top)->u.s.str);
next_pc += sizeof(struct load_op) + sizeof(struct field_ref);
PO;
}
+ OP(FILTER_OP_GET_CONTEXT_ROOT):
+ {
+ dbg_printf("op get context root\n");
+ estack_push(stack, top, ax, bx, ax_t, bx_t);
+ estack_ax(stack, top)->u.ptr.type = LOAD_ROOT_CONTEXT;
+ /* "field" only needed for variants. */
+ estack_ax(stack, top)->u.ptr.field = NULL;
+ estack_ax_t = REG_PTR;
+ next_pc += sizeof(struct load_op);
+ PO;
+ }
+
+ OP(FILTER_OP_GET_APP_CONTEXT_ROOT):
+ {
+ dbg_printf("op get app context root\n");
+ estack_push(stack, top, ax, bx, ax_t, bx_t);
+ estack_ax(stack, top)->u.ptr.type = LOAD_ROOT_APP_CONTEXT;
+ /* "field" only needed for variants. */
+ estack_ax(stack, top)->u.ptr.field = NULL;
+ estack_ax_t = REG_PTR;
+ next_pc += sizeof(struct load_op);
+ PO;
+ }
+
+ OP(FILTER_OP_GET_PAYLOAD_ROOT):
+ {
+ 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;
+ /* "field" only needed for variants. */
+ estack_ax(stack, top)->u.ptr.field = NULL;
+ estack_ax_t = REG_PTR;
+ next_pc += sizeof(struct load_op);
+ PO;
+ }
+
+ OP(FILTER_OP_GET_SYMBOL):
+ {
+ dbg_printf("op get symbol\n");
+ switch (estack_ax(stack, top)->u.ptr.type) {
+ case LOAD_OBJECT:
+ ERR("Nested fields not implemented yet.");
+ ret = -EINVAL;
+ goto end;
+ case LOAD_ROOT_CONTEXT:
+ case LOAD_ROOT_APP_CONTEXT:
+ case LOAD_ROOT_PAYLOAD:
+ /*
+ * symbol lookup is performed by
+ * specialization.
+ */
+ ret = -EINVAL;
+ goto end;
+ }
+ next_pc += sizeof(struct load_op) + sizeof(struct get_symbol);
+ PO;
+ }
+
+ OP(FILTER_OP_GET_SYMBOL_FIELD):
+ {
+ /*
+ * Used for first variant encountered in a
+ * traversal. Variants are not implemented yet.
+ */
+ ret = -EINVAL;
+ goto end;
+ }
+
+ OP(FILTER_OP_GET_INDEX_U16):
+ {
+ struct load_op *insn = (struct load_op *) pc;
+ struct get_index_u16 *index = (struct get_index_u16 *) insn->data;
+
+ dbg_printf("op get index u16\n");
+ ret = dynamic_get_index(session, bytecode, index->index, estack_ax(stack, top));
+ if (ret)
+ goto end;
+ estack_ax_v = estack_ax(stack, top)->u.v;
+ estack_ax_t = estack_ax(stack, top)->type;
+ next_pc += sizeof(struct load_op) + sizeof(struct get_index_u16);
+ PO;
+ }
+
+ OP(FILTER_OP_GET_INDEX_U64):
+ {
+ struct load_op *insn = (struct load_op *) pc;
+ struct get_index_u64 *index = (struct get_index_u64 *) insn->data;
+
+ dbg_printf("op get index u64\n");
+ ret = dynamic_get_index(session, bytecode, index->index, estack_ax(stack, top));
+ if (ret)
+ goto end;
+ estack_ax_v = estack_ax(stack, top)->u.v;
+ estack_ax_t = estack_ax(stack, top)->type;
+ next_pc += sizeof(struct load_op) + sizeof(struct get_index_u64);
+ PO;
+ }
+
+ OP(FILTER_OP_LOAD_FIELD):
+ {
+ dbg_printf("op load field\n");
+ ret = dynamic_load_field(estack_ax(stack, top));
+ if (ret)
+ goto end;
+ estack_ax_v = estack_ax(stack, top)->u.v;
+ estack_ax_t = estack_ax(stack, top)->type;
+ next_pc += sizeof(struct load_op);
+ PO;
+ }
+
+ OP(FILTER_OP_LOAD_FIELD_S8):
+ {
+ dbg_printf("op load field s8\n");
+
+ estack_ax_v = *(int8_t *) estack_ax(stack, top)->u.ptr.ptr;
+ estack_ax_t = REG_S64;
+ next_pc += sizeof(struct load_op);
+ PO;
+ }
+ OP(FILTER_OP_LOAD_FIELD_S16):
+ {
+ dbg_printf("op load field s16\n");
+
+ estack_ax_v = *(int16_t *) estack_ax(stack, top)->u.ptr.ptr;
+ estack_ax_t = REG_S64;
+ next_pc += sizeof(struct load_op);
+ PO;
+ }
+ OP(FILTER_OP_LOAD_FIELD_S32):
+ {
+ dbg_printf("op load field s32\n");
+
+ estack_ax_v = *(int32_t *) estack_ax(stack, top)->u.ptr.ptr;
+ estack_ax_t = REG_S64;
+ next_pc += sizeof(struct load_op);
+ PO;
+ }
+ OP(FILTER_OP_LOAD_FIELD_S64):
+ {
+ dbg_printf("op load field s64\n");
+
+ estack_ax_v = *(int64_t *) estack_ax(stack, top)->u.ptr.ptr;
+ estack_ax_t = REG_S64;
+ next_pc += sizeof(struct load_op);
+ PO;
+ }
+ OP(FILTER_OP_LOAD_FIELD_U8):
+ {
+ dbg_printf("op load field u8\n");
+
+ estack_ax_v = *(uint8_t *) estack_ax(stack, top)->u.ptr.ptr;
+ estack_ax_t = REG_S64;
+ next_pc += sizeof(struct load_op);
+ PO;
+ }
+ OP(FILTER_OP_LOAD_FIELD_U16):
+ {
+ dbg_printf("op load field u16\n");
+
+ estack_ax_v = *(uint16_t *) estack_ax(stack, top)->u.ptr.ptr;
+ estack_ax_t = REG_S64;
+ next_pc += sizeof(struct load_op);
+ PO;
+ }
+ OP(FILTER_OP_LOAD_FIELD_U32):
+ {
+ dbg_printf("op load field u32\n");
+
+ estack_ax_v = *(uint32_t *) estack_ax(stack, top)->u.ptr.ptr;
+ estack_ax_t = REG_S64;
+ next_pc += sizeof(struct load_op);
+ PO;
+ }
+ OP(FILTER_OP_LOAD_FIELD_U64):
+ {
+ dbg_printf("op load field u64\n");
+
+ estack_ax_v = *(uint64_t *) estack_ax(stack, top)->u.ptr.ptr;
+ estack_ax_t = REG_S64;
+ next_pc += sizeof(struct load_op);
+ PO;
+ }
+ OP(FILTER_OP_LOAD_FIELD_DOUBLE):
+ {
+ dbg_printf("op load field double\n");
+
+ memcpy(&estack_ax(stack, top)->u.d,
+ estack_ax(stack, top)->u.ptr.ptr,
+ sizeof(struct literal_double));
+ estack_ax(stack, top)->type = REG_DOUBLE;
+ next_pc += sizeof(struct load_op);
+ PO;
+ }
+
+ OP(FILTER_OP_LOAD_FIELD_STRING):
+ {
+ const char *str;
+
+ dbg_printf("op load field string\n");
+ str = (const char *) estack_ax(stack, top)->u.ptr.ptr;
+ estack_ax(stack, top)->u.s.str = str;
+ if (unlikely(!estack_ax(stack, top)->u.s.str)) {
+ dbg_printf("Filter warning: loading a NULL string.\n");
+ ret = -EINVAL;
+ goto end;
+ }
+ estack_ax(stack, top)->u.s.seq_len = SIZE_MAX;
+ estack_ax(stack, top)->u.s.literal_type =
+ ESTACK_STRING_LITERAL_TYPE_NONE;
+ estack_ax(stack, top)->type = REG_STRING;
+ next_pc += sizeof(struct load_op);
+ PO;
+ }
+
+ OP(FILTER_OP_LOAD_FIELD_SEQUENCE):
+ {
+ const char *ptr;
+
+ dbg_printf("op load field string sequence\n");
+ ptr = estack_ax(stack, top)->u.ptr.ptr;
+ estack_ax(stack, top)->u.s.seq_len = *(unsigned long *) ptr;
+ estack_ax(stack, top)->u.s.str = *(const char **) (ptr + sizeof(unsigned long));
+ estack_ax(stack, top)->type = REG_STRING;
+ if (unlikely(!estack_ax(stack, top)->u.s.str)) {
+ dbg_printf("Filter warning: loading a NULL sequence.\n");
+ ret = -EINVAL;
+ goto end;
+ }
+ estack_ax(stack, top)->u.s.literal_type =
+ ESTACK_STRING_LITERAL_TYPE_NONE;
+ next_pc += sizeof(struct load_op);
+ PO;
+ }
+
END_OP
end:
/* return 0 (discard) on error */
projects / lttng-ust.git / blobdiff