src/plugins/lttng-utils/debug-info/utils.c

   1 /*
   2  * SPDX-License-Identifier: MIT
   3  *
   4  * Copyright (c) 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com>
   5  *
   6  * Babeltrace - Debug info utilities
   7  */
   8
   9 #include <string.h>
  10 #include "utils.h"
  11
  12 BT_HIDDEN
  13 const char *get_filename_from_path(const char *path)
  14 {
  15         size_t i = strlen(path);
  16
  17         if (i == 0) {
  18                 goto end;
  19         }
  20
  21         if (path[i - 1] == '/') {
  22                 /*
  23                  * Path ends with a trailing slash, no filename to return.
  24                  * Return the original path.
  25                  */
  26                 goto end;
  27         }
  28
  29         while (i-- > 0) {
  30                 if (path[i] == '/') {
  31                         path = &path[i + 1];
  32                         goto end;
  33                 }
  34         }
  35 end:
  36         return path;
  37 }
  38
  39 BT_HIDDEN
  40 bt_bool is_event_common_ctx_dbg_info_compatible(const bt_field_class *in_field_class,
  41                 const char *debug_info_field_class_name)
  42 {
  43         const bt_field_class_structure_member *member;
  44         const bt_field_class *ip_fc, *vpid_fc;
  45         bt_bool match = BT_FALSE;
  46
  47         /*
  48          * If the debug info field is already present in the event common
  49          * context. Do not try to add it.
  50          */
  51         member =
  52                 bt_field_class_structure_borrow_member_by_name_const(
  53                         in_field_class, debug_info_field_class_name);
  54         if (member) {
  55                 goto end;
  56         }
  57
  58         /*
  59          * Verify that the ip and vpid field are present and of the right field
  60          * class.
  61          */
  62         member = bt_field_class_structure_borrow_member_by_name_const(
  63                         in_field_class, IP_FIELD_NAME);
  64         if (!member) {
  65                 goto end;
  66         }
  67
  68         ip_fc = bt_field_class_structure_member_borrow_field_class_const(
  69                 member);
  70         if (bt_field_class_get_type(ip_fc) !=
  71                         BT_FIELD_CLASS_TYPE_UNSIGNED_INTEGER) {
  72                 match = BT_FALSE;
  73                 goto end;
  74         }
  75
  76         member = bt_field_class_structure_borrow_member_by_name_const(
  77                         in_field_class, VPID_FIELD_NAME);
  78         if (!member) {
  79                 goto end;
  80         }
  81
  82         vpid_fc = bt_field_class_structure_member_borrow_field_class_const(
  83                 member);
  84
  85         if (bt_field_class_get_type(vpid_fc) !=
  86                         BT_FIELD_CLASS_TYPE_SIGNED_INTEGER) {
  87                 goto end;
  88         }
  89
  90         if (bt_field_class_integer_get_field_value_range(vpid_fc) != 32) {
  91                 goto end;
  92         }
  93
  94         match = BT_TRUE;
  95
  96 end:
  97         return match;
  98 }