libkmod/libkmod-index.h

   1 /*
   2  * libkmod - interface to kernel module operations
   3  *
   4  * Copyright (C) 2011-2013  ProFUSION embedded systems
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #pragma once
  21
  22 #include <inttypes.h>
  23
  24 struct index_value {
  25         struct index_value *next;
  26         unsigned int priority;
  27         unsigned int len;
  28         char value[0];
  29 };
  30
  31 /* In-memory index (depmod only) */
  32 struct index_file;
  33 struct index_file *index_file_open(const char *filename);
  34 void index_file_close(struct index_file *idx);
  35 char *index_search(struct index_file *idx, const char *key);
  36 void index_dump(struct index_file *in, int fd, const char *prefix);
  37 struct index_value *index_searchwild(struct index_file *idx, const char *key);
  38
  39 void index_values_free(struct index_value *values);
  40
  41 /* Implementation using mmap */
  42 struct index_mm;
  43 struct index_mm *index_mm_open(struct kmod_ctx *ctx, const char *filename,
  44                                                 unsigned long long *stamp);
  45 void index_mm_close(struct index_mm *index);
  46 char *index_mm_search(struct index_mm *idx, const char *key);
  47 struct index_value *index_mm_searchwild(struct index_mm *idx, const char *key);
  48 void index_mm_dump(struct index_mm *idx, int fd, const char *prefix);