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 BT_HIDDEN
  18 const char *get_filename_from_path(const char *path)
  19 {
  20         size_t i = strlen(path);
  21
  22         if (i == 0) {
  23                 goto end;
  24         }
  25
  26         if (path[i - 1] == '/') {
  27                 /*
  28                  * Path ends with a trailing slash, no filename to return.
  29                  * Return the original path.
  30                  */
  31                 goto end;
  32         }
  33
  34         while (i-- > 0) {
  35                 if (path[i] == '/') {
  36                         path = &path[i + 1];
  37                         goto end;
  38                 }
  39         }
  40 end:
  41         return path;
  42 }
  43
  44 BT_HIDDEN
  45 bool is_event_common_ctx_dbg_info_compatible(const bt_field_class *in_field_class,
  46                 const char *debug_info_field_class_name)
  47 {
  48         const bt_field_class_structure_member *member;
  49         const bt_field_class *ip_fc, *vpid_fc;
  50         bool match = false;
  51
  52         /*
  53          * If the debug info field is already present in the event common
  54          * context. Do not try to add it.
  55          */
  56         member = bt_field_class_structure_borrow_member_by_name_const(
  57                         in_field_class, debug_info_field_class_name);
  58         if (member) {
  59                 goto end;
  60         }
  61
  62         /*
  63          * Verify that the ip and vpid field are present and of the right field
  64          * class.
  65          */
  66         member = bt_field_class_structure_borrow_member_by_name_const(
  67                         in_field_class, IP_FIELD_NAME);
  68         if (!member) {
  69                 goto end;
  70         }
  71
  72         ip_fc = bt_field_class_structure_member_borrow_field_class_const(
  73                 member);
  74         if (bt_field_class_get_type(ip_fc) !=
  75                         BT_FIELD_CLASS_TYPE_UNSIGNED_INTEGER) {
  76                 goto end;
  77         }
  78
  79         member = bt_field_class_structure_borrow_member_by_name_const(
  80                         in_field_class, VPID_FIELD_NAME);
  81         if (!member) {
  82                 goto end;
  83         }
  84
  85         vpid_fc = bt_field_class_structure_member_borrow_field_class_const(
  86                 member);
  87         if (bt_field_class_get_type(vpid_fc) !=
  88                         BT_FIELD_CLASS_TYPE_SIGNED_INTEGER) {
  89                 goto end;
  90         }
  91
  92         if (bt_field_class_integer_get_field_value_range(vpid_fc) != 32) {
  93                 goto end;
  94         }
  95
  96         match = true;
  97
  98 end:
  99         return match;
 100 }