/[LeafOK_CVS]/lbbs/src/file_loader.c
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Diff of /lbbs/src/file_loader.c

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Revision 1.14 by sysadm, Mon Jun 16 01:36:56 2025 UTC Revision 1.20 by sysadm, Tue Nov 4 14:58:56 2025 UTC
# Line 1  Line 1 
1  /***************************************************************************  /* SPDX-License-Identifier: GPL-3.0-or-later */
2                                                  file_loader.c  -  description  /*
3                                                           -------------------   * file_loader
4          Copyright            : (C) 2004-2025 by Leaflet   *   - shared memory based file loader
5          Email                : leaflet@leafok.com   *
6   ***************************************************************************/   * Copyright (C) 2004-2025  Leaflet <leaflet@leafok.com>
7     */
 /***************************************************************************  
  *                                                                         *  
  *   This program is free software; you can redistribute it and/or modify  *  
  *   it under the terms of the GNU General Public License as published by  *  
  *   the Free Software Foundation; either version 3 of the License, or     *  
  *   (at your option) any later version.                                   *  
  *                                                                         *  
  ***************************************************************************/  
8    
9  #include "file_loader.h"  #include "file_loader.h"
 #include "trie_dict.h"  
 #include "str_process.h"  
10  #include "log.h"  #include "log.h"
11  #include <fcntl.h>  #include "str_process.h"
12    #include "trie_dict.h"
13  #include <errno.h>  #include <errno.h>
14  #include <unistd.h>  #include <fcntl.h>
15  #include <stdlib.h>  #include <stdlib.h>
16  #include <string.h>  #include <string.h>
17  #include <time.h>  #include <time.h>
18    #include <unistd.h>
19    #include <sys/ipc.h>
20  #include <sys/mman.h>  #include <sys/mman.h>
 #include <sys/stat.h>  
21  #include <sys/shm.h>  #include <sys/shm.h>
22  #include <sys/ipc.h>  #include <sys/stat.h>
23    
24  struct shm_header_t  struct shm_header_t
25  {  {
# Line 60  static void trie_file_dict_cleanup_cb(co Line 52  static void trie_file_dict_cleanup_cb(co
52  {  {
53          int shmid = (int)value;          int shmid = (int)value;
54    
55          if (shmctl(shmid, IPC_RMID, NULL) == -1)          if (shmid != 0 && shmctl(shmid, IPC_RMID, NULL) == -1)
56          {          {
57                  log_error("shmctl(shmid=%d, IPC_RMID) error (%d)\n", shmid, errno);                  log_error("shmctl(shmid=%d, IPC_RMID) error (%d)\n", shmid, errno);
58          }          }
# Line 121  int load_file(const char *filename) Line 113  int load_file(const char *filename)
113                  return -1;                  return -1;
114          }          }
115    
116          line_total = split_data_lines(p_data, SCREEN_COLS, line_offsets, MAX_SPLIT_FILE_LINES, 1);          line_total = split_data_lines(p_data, SCREEN_COLS, line_offsets, MAX_SPLIT_FILE_LINES, 1, NULL);
117    
118          // Allocate shared memory          // Allocate shared memory
119          proj_id = (int)(time(NULL) % getpid());          proj_id = (int)(time(NULL) % getpid());
# Line 149  int load_file(const char *filename) Line 141  int load_file(const char *filename)
141          ((struct shm_header_t *)p_shm)->shmid = shmid;          ((struct shm_header_t *)p_shm)->shmid = shmid;
142          ((struct shm_header_t *)p_shm)->data_len = data_len;          ((struct shm_header_t *)p_shm)->data_len = data_len;
143          ((struct shm_header_t *)p_shm)->line_total = line_total;          ((struct shm_header_t *)p_shm)->line_total = line_total;
144          memcpy(p_shm + sizeof(struct shm_header_t), p_data, data_len);          memcpy((char *)p_shm + sizeof(struct shm_header_t), p_data, data_len);
145    
146          if (munmap(p_data, data_len) < 0)          if (munmap(p_data, data_len) < 0)
147          {          {
# Line 157  int load_file(const char *filename) Line 149  int load_file(const char *filename)
149                  return -2;                  return -2;
150          }          }
151    
152          p_data = p_shm + sizeof(struct shm_header_t);          p_data = (char *)p_shm + sizeof(struct shm_header_t);
153          p_line_offsets = p_data + data_len + 1;          p_line_offsets = (long *)((char *)p_data + data_len + 1);
154          memcpy(p_line_offsets, line_offsets, sizeof(long) * (size_t)(line_total + 1));          memcpy(p_line_offsets, line_offsets, sizeof(long) * (size_t)(line_total + 1));
155    
156          if (shmdt(p_shm) == -1)          if (shmdt(p_shm) == -1)
# Line 180  int load_file(const char *filename) Line 172  int load_file(const char *filename)
172          {          {
173                  log_error("trie_dict_set(%s) error\n", filename);                  log_error("trie_dict_set(%s) error\n", filename);
174    
175                  if (shmctl(shmid, IPC_RMID, NULL) == -1)                  if (shmid != 0 && shmctl(shmid, IPC_RMID, NULL) == -1)
176                  {                  {
177                          log_error("shmctl(shmid=%d, IPC_RMID) error (%d)\n", shmid, errno);                          log_error("shmctl(shmid=%d, IPC_RMID) error (%d)\n", shmid, errno);
178                  }                  }
# Line 241  const void *get_file_shm_readonly(const Line 233  const void *get_file_shm_readonly(const
233    
234          *p_data_len = ((struct shm_header_t *)p_shm)->data_len;          *p_data_len = ((struct shm_header_t *)p_shm)->data_len;
235          *p_line_total = ((struct shm_header_t *)p_shm)->line_total;          *p_line_total = ((struct shm_header_t *)p_shm)->line_total;
236          *pp_data = p_shm + sizeof(struct shm_header_t);          *pp_data = (char *)p_shm + sizeof(struct shm_header_t);
237          *pp_line_offsets = *pp_data + *p_data_len + 1;          *pp_line_offsets = (const long *)((const char *)(*pp_data) + *p_data_len + 1);
238    
239          return p_shm;          return p_shm;
240  }  }

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