include/lttng/snapshot-internal.h

   1 /*
   2  * Copyright (C) 2013 David Goulet <dgoulet@efficios.com>
   3  *
   4  * SPDX-License-Identifier: LGPL-2.1-only
   5  *
   6  */
   7
   8 #ifndef LTTNG_SNAPSHOT_INTERNAL_ABI_H
   9 #define LTTNG_SNAPSHOT_INTERNAL_ABI_H
  10
  11 #include <limits.h>
  12 #include <stdint.h>
  13 #include <lttng/constant.h>
  14
  15 /*
  16  * Object used for the snapshot API. This is opaque to the public library.
  17  */
  18 struct lttng_snapshot_output {
  19         /*
  20          * ID of the snapshot output. This is only used when they are listed. It is
  21          * assigned by the session daemon so when adding an output, this value will
  22          * not be used.
  23          */
  24         uint32_t id;
  25         /*
  26          * Maximum size in bytes of the snapshot meaning the total size of all
  27          * stream combined. A value of 0 is unlimited.
  28          */
  29         uint64_t max_size;
  30         /* Name of the output so it can be recognized easily when listing them. */
  31         char name[LTTNG_NAME_MAX];
  32         /* Destination of the output. See lttng(1) for URL format. */
  33         char ctrl_url[PATH_MAX];
  34         /* Destination of the output. See lttng(1) for URL format. */
  35         char data_url[PATH_MAX];
  36 };
  37
  38 /*
  39  * Snapshot output list object opaque to the user.
  40  */
  41 struct lttng_snapshot_output_list {
  42         /*
  43          * The position in the output array. This is changed by a get_next call.
  44          */
  45         int index;
  46
  47         /*
  48          * Number of element in the array.
  49          */
  50         size_t count;
  51
  52         /*
  53          * Contains snapshot output object.
  54          */
  55         struct lttng_snapshot_output *array;
  56 };
  57
  58 #endif /* LTTNG_SNAPSHOT_INTERNAL_ABI_H */