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

   1 /*
   2  * Babeltrace - Debug info utilities
   3  *
   4  * Copyright (c) 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com>
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  19  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  */
  24
  25 #include <string.h>
  26 #include "utils.h"
  27
  28 BT_HIDDEN
  29 const char *get_filename_from_path(const char *path)
  30 {
  31         size_t i = strlen(path);
  32
  33         if (i == 0) {
  34                 goto end;
  35         }
  36
  37         if (path[i - 1] == '/') {
  38                 /*
  39                  * Path ends with a trailing slash, no filename to return.
  40                  * Return the original path.
  41                  */
  42                 goto end;
  43         }
  44
  45         while (i-- > 0) {
  46                 if (path[i] == '/') {
  47                         path = &path[i + 1];
  48                         goto end;
  49                 }
  50         }
  51 end:
  52         return path;
  53 }
  54
  55 BT_HIDDEN
  56 bt_bool is_event_common_ctx_dbg_info_compatible(const bt_field_class *in_field_class,
  57                 const char *debug_info_field_class_name)
  58 {
  59         const bt_field_class_structure_member *member;
  60         const bt_field_class *ip_fc, *vpid_fc;
  61         bt_bool match = BT_FALSE;
  62
  63         /*
  64          * If the debug info field is already present in the event common
  65          * context. Do not try to add it.
  66          */
  67         member =
  68                 bt_field_class_structure_borrow_member_by_name_const(
  69                         in_field_class, debug_info_field_class_name);
  70         if (member) {
  71                 goto end;
  72         }
  73
  74         /*
  75          * Verify that the ip and vpid field are present and of the right field
  76          * class.
  77          */
  78         member = bt_field_class_structure_borrow_member_by_name_const(
  79                         in_field_class, IP_FIELD_NAME);
  80         if (!member) {
  81                 goto end;
  82         }
  83
  84         ip_fc = bt_field_class_structure_member_borrow_field_class_const(
  85                 member);
  86         if (bt_field_class_get_type(ip_fc) !=
  87                         BT_FIELD_CLASS_TYPE_UNSIGNED_INTEGER) {
  88                 match = BT_FALSE;
  89                 goto end;
  90         }
  91
  92         member = bt_field_class_structure_borrow_member_by_name_const(
  93                         in_field_class, VPID_FIELD_NAME);
  94         if (!member) {
  95                 goto end;
  96         }
  97
  98         vpid_fc = bt_field_class_structure_member_borrow_field_class_const(
  99                 member);
 100
 101         if (bt_field_class_get_type(vpid_fc) !=
 102                         BT_FIELD_CLASS_TYPE_SIGNED_INTEGER) {
 103                 goto end;
 104         }
 105
 106         if (bt_field_class_integer_get_field_value_range(vpid_fc) != 32) {
 107                 goto end;
 108         }
 109
 110         match = BT_TRUE;
 111
 112 end:
 113         return match;
 114 }