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
  11 #include <babeltrace2/babeltrace.h>
  12
  13 #include "debug-info.h"
  14 #include "utils.h"
  15
  16 BT_HIDDEN
  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 BT_HIDDEN
  44 bt_bool is_event_common_ctx_dbg_info_compatible(const bt_field_class *in_field_class,
  45                 const char *debug_info_field_class_name)
  46 {
  47         const bt_field_class_structure_member *member;
  48         const bt_field_class *ip_fc, *vpid_fc;
  49         bt_bool match = BT_FALSE;
  50
  51         /*
  52          * If the debug info field is already present in the event common
  53          * context. Do not try to add it.
  54          */
  55         member =
  56                 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                 match = BT_FALSE;
  77                 goto end;
  78         }
  79
  80         member = bt_field_class_structure_borrow_member_by_name_const(
  81                         in_field_class, VPID_FIELD_NAME);
  82         if (!member) {
  83                 goto end;
  84         }
  85
  86         vpid_fc = bt_field_class_structure_member_borrow_field_class_const(
  87                 member);
  88
  89         if (bt_field_class_get_type(vpid_fc) !=
  90                         BT_FIELD_CLASS_TYPE_SIGNED_INTEGER) {
  91                 goto end;
  92         }
  93
  94         if (bt_field_class_integer_get_field_value_range(vpid_fc) != 32) {
  95                 goto end;
  96         }
  97
  98         match = BT_TRUE;
  99
 100 end:
 101         return match;
 102 }