src/common/fd-tracker/utils.hpp

   1 /*
   2  * Copyright (C) 2018 Jérémie Galarneau <jeremie.galarneau@efficios.com>
   3  *
   4  * SPDX-License-Identifier: LGPL-2.1-only
   5  *
   6  */
   7
   8 #ifndef FD_TRACKER_UTILS_H
   9 #define FD_TRACKER_UTILS_H
  10
  11 #include <common/compat/directory-handle.hpp>
  12 #include <common/compat/poll.hpp>
  13 #include <common/fd-tracker/fd-tracker.hpp>
  14 #include <common/macros.hpp>
  15
  16 /*
  17  * Utility implementing a close_fd callback which receives one file descriptor
  18  * and closes it, returning close()'s return value.
  19  */
  20 int fd_tracker_util_close_fd(void *, int *fd);
  21
  22 /*
  23  * Create a pipe and track its underlying fds.
  24  */
  25 int fd_tracker_util_pipe_open_cloexec(
  26                 struct fd_tracker *tracker, const char *name, int *pipe);
  27 int fd_tracker_util_pipe_close(struct fd_tracker *tracker, int *pipe);
  28
  29 /*
  30  * Create a poll event and track its underlying fd, if applicable.
  31  */
  32 int fd_tracker_util_poll_create(struct fd_tracker *tracker,
  33                 const char *name,
  34                 struct lttng_poll_event *events,
  35                 int size,
  36                 int flags);
  37 int fd_tracker_util_poll_clean(
  38                 struct fd_tracker *tracker, struct lttng_poll_event *events);
  39
  40 struct lttng_directory_handle *fd_tracker_create_directory_handle(
  41                 struct fd_tracker *tracker, const char *path);
  42
  43 struct lttng_directory_handle *fd_tracker_create_directory_handle_from_handle(
  44                 struct fd_tracker *tracker,
  45                 struct lttng_directory_handle *handle,
  46                 const char *path);
  47
  48 #endif /* FD_TRACKER_UTILS_H */