2 Bacula® - The Network Backup Solution
4 Copyright (C) 2000-2008 Free Software Foundation Europe e.V.
6 The main author of Bacula is Kern Sibbald, with contributions from
7 many others, a complete list can be found in the file AUTHORS.
8 This program is Free Software; you can redistribute it and/or
9 modify it under the terms of version two of the GNU General Public
10 License as published by the Free Software Foundation, which is
11 listed in the file LICENSE.
13 This program is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
23 Bacula® is a registered trademark of Kern Sibbald.
24 The licensor of Bacula is the Free Software Foundation Europe
25 (FSFE), Fiduciary Program, Sumatrastrasse 25, 8006 Zürich,
26 Switzerland, email:ftf@fsfeurope.org.
29 * vtape.h - Emulate the Linux st (scsi tape) driver on file.
30 * for regression and bug hunting purpose
42 * Theses functions will replace open/read/write
44 int vtape_open(const char *pathname, int flags, ...);
45 int vtape_close(int fd);
46 int vtape_ioctl(int fd, ioctl_req_t request, ...);
47 void vtape_debug(int level);
48 ssize_t vtape_read(int fd, void *buffer, size_t count);
49 ssize_t vtape_write(int fd, const void *buffer, size_t count);
53 #define FTAPE_MAX_DRIVE 50
55 #define VTAPE_MAX_BLOCK 20*1024*2048; /* 20GB */
58 VT_READ_EOF, /* Need to read the entire EOF struct */
59 VT_SKIP_EOF /* Have already read the EOF byte */
64 int fd; /* Our file descriptor */
66 boffset_t file_block; /* size */
69 boffset_t last_FM; /* last file mark (last file) */
70 boffset_t next_FM; /* next file mark (next file) */
71 boffset_t cur_FM; /* current file mark */
73 bool atEOF; /* End of file */
74 bool atEOT; /* End of media */
75 bool atEOD; /* End of data */
76 bool atBOT; /* Begin of tape */
77 bool online; /* volume online */
78 bool needEOF; /* check if last operation need eof */
80 int32_t last_file; /* last file of the volume */
81 int32_t current_file; /* current position */
82 int32_t current_block; /* current position */
87 void check_eof() { if(needEOF) weof();};
89 bool read_fm(VT_READ_FM_MODE readfirst);
103 int open(const char *pathname, int flags);
104 ssize_t read(void *buffer, size_t count);
105 ssize_t write(const void *buffer, size_t count);
108 int tape_op(struct mtop *mt_com);
109 int tape_get(struct mtget *mt_com);
110 int tape_pos(struct mtpos *mt_com);
114 #endif /*!USE_VTAPE */
116 #endif /* !VTAPE_H */