src/fs_io.h

   1 /*
   2  * Copyright (C) 1996-2017 The Squid Software Foundation and contributors
   3  *
   4  * Squid software is distributed under GPLv2+ license and includes
   5  * contributions from numerous individuals and organizations.
   6  * Please see the COPYING and CONTRIBUTORS files for details.
   7  */
   8
   9 /* DEBUG: section 06    Disk I/O Routines */
  10
  11 #ifndef SQUID_FS_IO_H_
  12 #define SQUID_FS_IO_H_
  13
  14 #include "mem/forward.h"
  15 #include "typedefs.h" //DRCB, DWCB
  16
  17 class MemBuf;
  18
  19 // POD
  20 class dread_ctrl
  21 {
  22 public:
  23     int fd;
  24     off_t offset;
  25     int req_len;
  26     char *buf;
  27     int end_of_file;
  28     DRCB *handler;
  29     void *client_data;
  30 };
  31
  32 // POD
  33 class dwrite_q
  34 {
  35 public:
  36     off_t file_offset;
  37     char *buf;
  38     size_t len;
  39     size_t buf_offset;
  40     dwrite_q *next;
  41     FREE *free_func;
  42 };
  43
  44 int file_open(const char *path, int mode);
  45 void file_close(int fd);
  46 void file_write(int, off_t, void const *, int len, DWCB *, void *, FREE *);
  47 void file_write_mbuf(int fd, off_t, MemBuf mb, DWCB * handler, void *handler_data);
  48 void file_read(int, char *, int, off_t, DRCB *, void *);
  49 void safeunlink(const char *path, int quiet);
  50 int xrename(const char *from, const char *to);
  51
  52 int fsBlockSize(const char *path, int *blksize);
  53 int fsStats(const char *, int *, int *, int *, int *);
  54
  55 #endif /* SQUID_FS_IO_H_ */
  56