+++ /dev/null
-/*
- * Copyright (C) 2017 Jérémie Galarneau <jeremie.galarneau@efficios.com>
- *
- * SPDX-License-Identifier: LGPL-2.1-only
- *
- */
-
-#include <common/buffer-view.h>
-#include <common/dynamic-buffer.h>
-#include <common/error.h>
-
-struct lttng_buffer_view lttng_buffer_view_init(
- const char *src, size_t offset, ptrdiff_t len)
-{
- struct lttng_buffer_view view = { .data = src + offset, .size = len };
- return view;
-}
-
-bool lttng_buffer_view_is_valid(const struct lttng_buffer_view *view)
-{
- return view && view->data && view->size > 0;
-}
-
-struct lttng_buffer_view lttng_buffer_view_from_view(
- const struct lttng_buffer_view *src, size_t offset,
- ptrdiff_t len)
-{
- struct lttng_buffer_view view = { .data = NULL, .size = 0 };
-
- LTTNG_ASSERT(src);
-
- if (offset > src->size) {
- ERR("Attempt to create buffer view from another view with invalid offset (offset > source size): source size = %zu, offset in source = %zu, length = %zd",
- src->size, offset, len);
- goto end;
- }
-
- if (len != -1 && len > (src->size - offset)) {
- ERR("Attempt to create buffer view from another view with invalid length (length > space left after offset in source): source size = %zu, offset in source = %zu, length = %zd",
- src->size, offset, len);
- goto end;
- }
-
- view.data = src->data + offset;
- view.size = len == -1 ? (src->size - offset) : len;
-end:
- return view;
-}
-
-struct lttng_buffer_view lttng_buffer_view_from_dynamic_buffer(
- const struct lttng_dynamic_buffer *src, size_t offset,
- ptrdiff_t len)
-{
- struct lttng_buffer_view view = { .data = NULL, .size = 0 };
-
- LTTNG_ASSERT(src);
-
- if (offset > src->size) {
- ERR("Attempt to create buffer view from a dynamic buffer with invalid offset (offset > source size): source size = %zu, offset in source = %zu, length = %zd",
- src->size, offset, len);
- goto end;
- }
-
- if (len != -1 && len > (src->size - offset)) {
- ERR("Attempt to create buffer view from a dynamic buffer with invalid length (length > space left after offset in source): source size = %zu, offset in source = %zu, length = %zd",
- src->size, offset, len);
- goto end;
- }
-
- view.data = src->data + offset;
- view.size = len == -1 ? (src->size - offset) : len;
-end:
- return view;
-}
-
-bool lttng_buffer_view_contains_string(const struct lttng_buffer_view *buf,
- const char *str,
- size_t len_with_null_terminator)
-{
- const char *past_buf_end;
- size_t max_str_len_with_null_terminator;
- size_t str_len;
- bool ret;
-
- past_buf_end = buf->data + buf->size;
-
- /* Is the start of the string in the buffer view? */
- if (str < buf->data || str >= past_buf_end) {
- ret = false;
- goto end;
- }
-
- /*
- * Max length the string could have to fit in the buffer, including
- * NULL terminator.
- */
- max_str_len_with_null_terminator = past_buf_end - str;
-
- /* Could the string even fit in the buffer? */
- if (len_with_null_terminator > max_str_len_with_null_terminator) {
- ret = false;
- goto end;
- }
-
- str_len = lttng_strnlen(str, max_str_len_with_null_terminator);
- if (str_len != (len_with_null_terminator - 1)) {
- ret = false;
- goto end;
- }
-
- ret = true;
-
-end:
- return ret;
-}