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 <stdbool.h>
  10 #include <string.h>
  11
  12 #include <babeltrace2/babeltrace.h>
  13
  14 #include "debug-info.h"
  15 #include "utils.h"
  16
  17 const char *get_filename_from_path(const char *path)
  18 {
  19         size_t i = strlen(path);
  20
  21         if (i == 0) {
  22                 goto end;
  23         }
  24
  25         if (path[i - 1] == '/') {
  26                 /*
  27                  * Path ends with a trailing slash, no filename to return.
  28                  * Return the original path.
  29                  */
  30                 goto end;
  31         }
  32
  33         while (i-- > 0) {
  34                 if (path[i] == '/') {
  35                         path = &path[i + 1];
  36                         goto end;
  37                 }
  38         }
  39 end:
  40         return path;
  41 }
  42
  43 bool is_event_common_ctx_dbg_info_compatible(const bt_field_class *in_field_class,
  44                 const char *debug_info_field_class_name)
  45 {
  46         const bt_field_class_structure_member *member;
  47         const bt_field_class *ip_fc, *vpid_fc;
  48         bool match = false;
  49
  50         /*
  51          * If the debug info field is already present in the event common
  52          * context. Do not try to add it.
  53          */
  54         member = bt_field_class_structure_borrow_member_by_name_const(
  55                 in_field_class, debug_info_field_class_name);
  56         if (member) {
  57                 goto end;
  58         }
  59
  60         /*
  61          * Verify that the ip and vpid field are present and of the right field
  62          * class.
  63          */
  64         member = bt_field_class_structure_borrow_member_by_name_const(
  65                 in_field_class, IP_FIELD_NAME);
  66         if (!member) {
  67                 goto end;
  68         }
  69
  70         ip_fc = bt_field_class_structure_member_borrow_field_class_const(
  71                 member);
  72         if (bt_field_class_get_type(ip_fc) !=
  73                         BT_FIELD_CLASS_TYPE_UNSIGNED_INTEGER) {
  74                 goto end;
  75         }
  76
  77         member = bt_field_class_structure_borrow_member_by_name_const(
  78                 in_field_class, VPID_FIELD_NAME);
  79         if (!member) {
  80                 goto end;
  81         }
  82
  83         vpid_fc = bt_field_class_structure_member_borrow_field_class_const(
  84                 member);
  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 = true;
  95
  96 end:
  97         return match;
  98 }