1 | /* libmondo-stream.c
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2 | $Id: libmondo-stream.c 30 2005-09-28 23:32:28Z bcornec $
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3 |
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4 | ...tools for talking to tapes, Monitas streams, etc.
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5 |
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6 |
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7 | 07/10
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8 | - added ACL and XATTR support
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9 |
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10 | 04/17
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11 | - added bkpinfo->internal_tape_block_size
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12 | - fixed bug in set_tape_block_size_with_mt()
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13 |
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14 | 03/25
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15 | - call 'mt' when opening tape in/out, to set block size to 32K
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16 |
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17 | 02/06/2004
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18 | - only eject_device() at end of closein_tape() --- not closeout_tape()
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19 |
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20 | 10/26/2003
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21 | - call eject_device() at end of closein_tape() and closeout_tape()
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22 |
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23 | 09/25
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24 | - added docu-header to each subroutine
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25 |
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26 | 09/20
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27 | - working on multi-tape code
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28 | - friendlier message in insist_on_this_tape_number()
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29 | - delay is now 5s
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30 |
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31 | 09/10
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32 | - adding multi-tape support
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33 | - adding 'back catalog' of previous archives, so that we may resume
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34 | from point of end-of-tape (approx.)
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35 |
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36 | 09/08
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37 | - cleaned up insist_on_this_tape_number() --- 10s delay for same tape now
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38 |
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39 | 08/27
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40 | - improved find_tape_device_and_size() --- tries /dev/osst*
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41 |
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42 | 05/05
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43 | - added Joshua Oreman's FreeBSD patches
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44 |
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45 | 04/24
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46 | - added lots of assert()'s and log_OS_error()'s
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47 |
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48 | 04/06/2003
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49 | - use find_home_of_exe() instead of which
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50 |
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51 | 12/13/2002
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52 | - cdrecord -scanbus call was missing 2> /dev/null
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53 |
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54 | 11/24
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55 | - disabled fatal_error("Bad marker")
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56 |
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57 | 10/29
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58 | - replaced convoluted grep wih wc (KP)
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59 |
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60 | 09/07
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61 | - removed g_end_of_tape_reached
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62 | - lots of multitape-related fixes
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63 |
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64 | 08/01 - 08/31
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65 | - write 16MB of zeroes to end of tape when closing(out)
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66 | - compensate for 'buffer' and its distortion of speed of writing/reading
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67 | when writing/reading data disks at start of tape
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68 | - rewrote lots of multitape stuff
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69 | - wrote workaround to allow >2GB of archives w/buffering
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70 | - do not close/reopen tape when starting to read/write from
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71 | new tape: no need! 'buffer' handles all that; we're writing
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72 | to/reading from a FIFO, so no need to close/reopen when new tape
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73 | - write 8MB of zeroes at end of tape, just in case
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74 | - re-enable various calls to *_evalcall_form
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75 | - added g_end_of_tape_reached
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76 | - fixed bugs in start_to_[read|write]_[to|from]_next_tape
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77 | - added internal buffering, replacing the external 'buffer' exe
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78 | - wait 10 seconds (after user inserts new tape), to
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79 | let tape stabilize in drive
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80 | - added insist_on_this_tape_number()
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81 | - worked on find_tape_device_and_size()
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82 | - cleaned up some log_it() calls
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83 | - added find_tape_device_and_size()
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84 | - replaced using_cdstream with backup_media_type
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85 | - replace *_from_tape with *_from_stream
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86 | - replace *_to_stream with *_to_stream
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87 |
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88 | 07/01 - 07/31
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89 | - leave 32MB at end of tape, to avoid overrunning
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90 | - started [07/24/2002]
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91 | */
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92 |
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93 |
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94 | /**
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95 | * @file
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96 | * Functions for writing data to/reading data from streams (tape, CD stream, etc.)
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97 | */
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98 |
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99 | #include "my-stuff.h"
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100 | #include "mondostructures.h"
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101 | #include "libmondo-devices.h"
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102 | #include "lib-common-externs.h"
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103 | #include "libmondo-stream.h"
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104 | #include "libmondo-string-EXT.h"
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105 | #include "libmondo-files-EXT.h"
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106 | #include "libmondo-gui-EXT.h"
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107 | #include "libmondo-fork-EXT.h"
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108 | #include "libmondo-tools-EXT.h"
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109 | #include "libmondo-fifo-EXT.h"
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110 |
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111 | #define EXTRA_TAPE_CHECKSUMS
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112 |
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113 | /*@unused@*/
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114 | //static char cvsid[] = "$Id: libmondo-stream.c 30 2005-09-28 23:32:28Z bcornec $";
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115 | extern bool g_sigpipe;
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116 | extern int g_tape_buffer_size_MB;
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117 |
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118 | /**
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119 | * @addtogroup globalGroup
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120 | * @{
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121 | */
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122 | /**
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123 | * The file pointer for the opened tape/CD stream.
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124 | * Opened and closed by openin_tape(), openin_cdstream(),
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125 | * openout_tape(), openout_cdstream(), closein_tape(), closein_cdstream(),
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126 | * closeout_tape(), and closeout_cdstream().
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127 | */
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128 | FILE *g_tape_stream = NULL;
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129 |
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130 |
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131 | /**
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132 | * The position (in kilobytes) where we are on the tape.
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133 | */
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134 | long long g_tape_posK = 0;
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135 |
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136 | /**
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137 | * The current media number we're using. This value is 1-based.
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138 | */
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139 | int g_current_media_number=-1;
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140 |
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141 | /**
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142 | * The tape catalog that keeps track of files written to tape.
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143 | */
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144 | struct s_tapecatalog *g_tapecatalog;
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145 |
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146 | /* @} - end of globalGroup */
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147 |
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148 | int write_backcatalog_to_tape (struct s_bkpinfo *bkpinfo);
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149 |
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150 |
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151 |
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152 |
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153 |
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154 | /**
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155 | * @addtogroup streamGroup
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156 | * @{
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157 | */
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158 | /**
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159 | * Close the global output file descriptor which Mondo has used to read
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160 | * from the CD stream.
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161 | * @param bkpinfo The backup information structure. Passed directly to closein_tape().
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162 | * @return 0 for success, nonzero for failure.
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163 | * @note This should be called by restore processes only.
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164 | */
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165 | int
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166 | closein_cdstream (struct s_bkpinfo *bkpinfo)
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167 | {
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168 | return (closein_tape (bkpinfo));
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169 | }
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170 |
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171 |
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172 | /**
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173 | * Close the global output file descriptor which Mondo has used to read
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174 | * from buffer or dd, which read from the tape.
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175 | * @param bkpinfo The backup information structure. Unused.
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176 | * @return 0 for success, nonzero for failure.
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177 | * @note This should be called by restore processes only.
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178 | * @note This function also works for cdstreams for now, but don't count on this behavior.
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179 | * @bug @p bkpinfo parameter is unused.
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180 | */
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181 | int
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182 | closein_tape (struct s_bkpinfo *bkpinfo)
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183 | {
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184 | /*@ int's ********************************************************/
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185 | int retval = 0;
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186 | int res = 0;
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187 | int ctrl_chr = '\0';
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188 |
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189 | /*@ buffers ******************************************************/
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190 | char fname[MAX_STR_LEN];
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191 |
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192 | /*@ long long's **************************************************/
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193 | long long size;
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194 | char *blk;
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195 | int i;
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196 |
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197 | blk = (char*)malloc(256*1024);
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198 |
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199 | log_it("closein_tape() -- entering");
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200 | res = read_header_block_from_stream (&size, fname, &ctrl_chr);
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201 | retval += res;
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202 | if (ctrl_chr != BLK_END_OF_BACKUP)
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203 | {
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204 | wrong_marker (BLK_END_OF_BACKUP, ctrl_chr);
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205 | }
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206 | res = read_header_block_from_stream (&size, fname, &ctrl_chr);
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207 | retval += res;
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208 | if (ctrl_chr != BLK_END_OF_TAPE)
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209 | {
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210 | wrong_marker (BLK_END_OF_TAPE, ctrl_chr);
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211 | }
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212 | for(i=0; i<8 && !feof(g_tape_stream); i++)
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213 | {
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214 | (void) fread (blk, 1, 256*1024, g_tape_stream);
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215 | }
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216 | sleep(1);
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217 | paranoid_system("sync");
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218 | sleep(1);
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219 | paranoid_pclose (g_tape_stream);
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220 | log_it("closein_tape() -- leaving");
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221 | /*
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222 | for(i=0; i < g_tapecatalog->entries; i++)
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223 | {
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224 | log_it("i=%d type=%s num=%d aux=%ld", i, (g_tapecatalog->el[i].type==fileset)?"fileset":"bigslice", g_tapecatalog->el[i].number, g_tapecatalog->el[i].aux);
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225 | }
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226 | */
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227 | if (!bkpinfo->please_dont_eject)
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228 | { eject_device(bkpinfo->media_device); }
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229 | paranoid_free(blk);
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230 | paranoid_free(g_tapecatalog);
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231 | return (retval);
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232 | }
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233 |
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234 |
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235 |
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236 | /**
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237 | * Close the global output file descriptor which Mondo has been using to write
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238 | * to the tape device (via buffer or dd).
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239 | * @param bkpinfo The backup information structure. @c bkpinfo->media_size is the only field used.
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240 | * @return 0 for success, nonzero for failure.
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241 | * @note This should be called by backup processes only.
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242 | */
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243 | int
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244 | closeout_tape (struct s_bkpinfo *bkpinfo)
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245 | {
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246 | /*@ int's ********************************************************/
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247 | int retval = 0;
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248 | // int res = 0;
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249 | // int ctrl_chr = '\0';
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250 |
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251 | /*@ buffers ******************************************************/
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252 | // char fname[MAX_STR_LEN];
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253 |
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254 | /*@ long long's **************************************************/
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255 | // long long size;
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256 | int i;
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257 | char *blk;
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258 |
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259 | blk = (char*)malloc(256*1024);
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260 |
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261 | sleep(1);
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262 | paranoid_system("sync");
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263 | sleep(1);
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264 | log_it("closeout_tape() -- entering");
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265 | retval+=write_header_block_to_stream (0, "end-of-backup", BLK_END_OF_BACKUP);
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266 | retval+=write_header_block_to_stream (0, "end-of-tape", BLK_END_OF_TAPE); /* just in case */
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267 | /* write 1MB of crap */
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268 | for (i = 0; i < 256*1024; i++)
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269 | {
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270 | blk[i] = (int)(random()&0xFF);
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271 | }
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272 | for (i = 0; i < 4*8; i++)
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273 | {
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274 | (void) fwrite (blk, 1, 256*1024, g_tape_stream);
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275 | if (should_we_write_to_next_tape (bkpinfo->media_size[g_current_media_number], 256*1024))
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276 | {
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277 | start_to_write_to_next_tape (bkpinfo);
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278 | }
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279 | }
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280 | /* write 1MB of zeroes */
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281 | /*
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282 | for (i = 0; i < 256*1024; i++)
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283 | {
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284 | blk[i] = 0;
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285 | }
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286 | for (i = 0; i < 4; i++)
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287 | {
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288 | fwrite (blk, 1, 256*1024, g_tape_stream);
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289 | if (should_we_write_to_next_tape (bkpinfo->media_size[g_current_media_number], 256*1024))
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290 | {
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291 | start_to_write_to_next_tape (bkpinfo);
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292 | }
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293 | }
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294 | */
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295 | sleep(2);
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296 | paranoid_pclose (g_tape_stream);
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297 | log_it("closeout_tape() -- leaving");
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298 | for(i=0; i<g_tapecatalog->entries; i++)
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299 | {
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300 | log_it("i=%d type=%s num=%d aux=%ld posK=%lld", i, (g_tapecatalog->el[i].type==fileset)?"fileset":"bigslice", g_tapecatalog->el[i].number, g_tapecatalog->el[i].aux, g_tapecatalog->el[i].tape_posK);
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301 | }
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302 | // if (!bkpinfo->please_dont_eject)
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303 | // { eject_device(bkpinfo->media_device); }
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304 | paranoid_free(blk);
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305 | paranoid_free(g_tapecatalog);
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306 | return (retval);
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307 | }
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308 |
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309 |
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310 |
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311 | bool mt_says_tape_exists(char*dev)
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312 | {
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313 | char *command;
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314 | int res;
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315 |
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316 | malloc_string(command);
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317 | sprintf(command, "mt -f %s status", dev);
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318 | res = run_program_and_log_output(command, 1);
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319 | paranoid_free(command);
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320 | if (res) { return(FALSE); } else { return(TRUE); }
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321 | }
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322 |
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323 |
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324 |
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325 | /**
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326 | * Determine the name and size of the tape device. Tries the SCSI tape for
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327 | * this platform, then the IDE tape, then "/dev/st0", then "/dev/osst0".
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328 | * @param dev Where to put the found tape device.
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329 | * @param siz Where to put the tape size (a string like "4GB")
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330 | * @return 0 if success, nonzero if failure (in which @p dev and @p siz are undefined).
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331 | */
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332 | int
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333 | find_tape_device_and_size (char*dev, char*siz)
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334 | {
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335 | char tmp[MAX_STR_LEN];
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336 | char command[MAX_STR_LEN*2];
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337 | char cdr_exe[MAX_STR_LEN];
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338 | // char tape_description_[MAX_STR_LEN];
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339 | // char tape_manufacturer_cdr[MAX_STR_LEN];
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340 | // FILE*fin;
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341 | int res;
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342 |
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343 | log_to_screen("I am looking for your tape streamer. Please wait.");
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344 | dev[0] = siz[0] = '\0';
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345 | if (find_home_of_exe("cdrecord"))
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346 | { strcpy(cdr_exe, "cdrecord"); }
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347 | else
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348 | { strcpy(cdr_exe, "dvdrecord"); }
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349 | sprintf(command, "%s -scanbus 2> /dev/null | grep -i tape | wc -l", cdr_exe);
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350 | strcpy (tmp, call_program_and_get_last_line_of_output(command));
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351 | if (atoi(tmp)!=1)
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352 | {
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353 | log_it("Either too few or too many tape streamers for me to detect...");
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354 | strcpy(dev, VANILLA_SCSI_TAPE);
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355 | return 1;
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356 | }
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357 | sprintf(command, "%s -scanbus 2> /dev/null | tr -s '\t' ' ' | grep \"[0-9]*,[0-9]*,[0-9]*\" | grep -v \"[0-9]*) \\*\" | grep -i TAPE | cut -d' ' -f2 | head -n1", cdr_exe);
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358 | strcpy (tmp, call_program_and_get_last_line_of_output(command));
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359 | if (strlen (tmp) < 2)
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360 | {
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361 | log_it ("Could not find tape device");
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362 | return 1;
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363 | }
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364 | sprintf(command, "%s -scanbus 2> /dev/null | tr -s '\t' ' ' | grep \"[0-9]*,[0-9]*,[0-9]*\" | grep -v \"[0-9]*) \\*\" | grep -i TAPE | cut -d' ' -f3 | cut -d')' -f1 | head -n1", cdr_exe);
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365 | strcpy (tmp, call_program_and_get_last_line_of_output(command));
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366 | strcpy (dev, VANILLA_SCSI_TAPE);
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367 | dev[strlen(dev)-1] = '\0';
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368 | strcat(dev, tmp); // e.g. '/dev/st0' becomes '/dev/stN'
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369 | res = 0;
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370 | if (!mt_says_tape_exists(dev))
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371 | {
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372 | strcpy(dev, ALT_TAPE);
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373 | if (!mt_says_tape_exists(dev))
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374 | {
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375 | log_it ("Cannot openin %s", dev);
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376 | strcpy(dev, "/dev/st0");
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377 | if (!mt_says_tape_exists(dev))
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378 | {
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379 | log_it ("Cannot openin %s", dev);
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380 | strcpy(dev, "/dev/osst0");
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381 | if (!mt_says_tape_exists(dev))
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382 | { res++; }
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383 | else
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384 | { res=0; }
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385 | }
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386 | }
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387 | }
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388 |
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389 | log_it("At this point, dev = %s and res = %d" , dev, res);
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390 |
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391 | strcpy(tmp, call_program_and_get_last_line_of_output("\
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392 | cdrecord -scanbus 2> /dev/null | tr -s '\t' ' ' | \
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393 | grep \"[0-9]*,[0-9]*,[0-9]*\" | grep -v \"[0-9]*) \\*\" | grep -i TAPE | \
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394 | awk '{for(i=1; i<NF; i++) { if (index($i, \"GB\")>0) { print $i;};};};'"));
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395 |
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396 | if (mt_says_tape_exists(dev))
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397 | { res = 0; }
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398 | else
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399 | {
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400 | log_it("Turning %s", dev);
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401 | strcpy(tmp, (strrchr(dev, '/')!=NULL)?strrchr(dev, '/'):dev);
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402 | sprintf(dev, "/dev/os%s", tmp);
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403 | log_it("...into %s", dev);
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404 | if (mt_says_tape_exists(dev))
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405 | { res=0; }
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406 | else
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407 | { res++; }
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408 | }
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409 |
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410 | siz[0] = '\0';
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411 | log_it("res=%d; dev=%s", res, dev);
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412 |
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413 | if (res) { return(res); }
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414 |
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415 | if (strlen(tmp)<2) { siz[0]='\0'; log_it("Warning - size of tape unknown"); return(0); }
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416 | else { strcpy(siz, tmp); return(0); }
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417 | }
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418 |
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419 |
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420 |
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421 |
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422 |
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423 |
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424 | int read_EXAT_files_from_tape(struct s_bkpinfo *bkpinfo, long long *ptmp_size, char *tmp_fname, int *pctrl_chr, char*xattr_fname, char*acl_fname)
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425 | {
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426 | int res=0;
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427 | int retval=0;
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428 |
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429 | // xattr
|
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430 | res = read_header_block_from_stream(ptmp_size, tmp_fname, pctrl_chr);
|
---|
431 | if(*pctrl_chr!=BLK_START_EXAT_FILE){wrong_marker(BLK_START_EXAT_FILE,*pctrl_chr);}
|
---|
432 | if (!strstr(tmp_fname, "xattr")) { fatal_error("Wrong order, sunshine."); }
|
---|
433 | read_file_from_stream_to_file(bkpinfo, xattr_fname, *ptmp_size);
|
---|
434 | res = read_header_block_from_stream(ptmp_size, tmp_fname, pctrl_chr);
|
---|
435 | if(*pctrl_chr!= BLK_STOP_EXAT_FILE) {wrong_marker(BLK_STOP_EXAT_FILE,*pctrl_chr);}
|
---|
436 | // acl
|
---|
437 | res = read_header_block_from_stream(ptmp_size, tmp_fname, pctrl_chr);
|
---|
438 | if (!strstr(tmp_fname, "acl")) { fatal_error("Wrong order, sunshine."); }
|
---|
439 | if(*pctrl_chr!=BLK_START_EXAT_FILE){wrong_marker(BLK_START_EXAT_FILE,*pctrl_chr);}
|
---|
440 | read_file_from_stream_to_file(bkpinfo, acl_fname, *ptmp_size);
|
---|
441 | res = read_header_block_from_stream(ptmp_size, tmp_fname, pctrl_chr);
|
---|
442 | if(*pctrl_chr!= BLK_STOP_EXAT_FILE){wrong_marker(BLK_STOP_EXAT_FILE,*pctrl_chr);}
|
---|
443 | res=read_header_block_from_stream(ptmp_size, tmp_fname, pctrl_chr);
|
---|
444 | if(*pctrl_chr!= BLK_STOP_EXTENDED_ATTRIBUTES)
|
---|
445 | { wrong_marker(BLK_STOP_EXTENDED_ATTRIBUTES,*pctrl_chr); }
|
---|
446 | // tarball itself
|
---|
447 | res=read_header_block_from_stream(ptmp_size, tmp_fname, pctrl_chr);
|
---|
448 | log_msg(1, "Got xattr and acl; now looking for afioball");
|
---|
449 | return(retval);
|
---|
450 | }
|
---|
451 |
|
---|
452 |
|
---|
453 | int write_EXAT_files_to_tape(struct s_bkpinfo *bkpinfo, char*xattr_fname, char*acl_fname)
|
---|
454 | {
|
---|
455 | int res=0;
|
---|
456 | // EXATs
|
---|
457 | write_header_block_to_stream(length_of_file(xattr_fname), xattr_fname, BLK_START_EXTENDED_ATTRIBUTES);
|
---|
458 | // xattr
|
---|
459 | write_header_block_to_stream(length_of_file(xattr_fname), xattr_fname, BLK_START_EXAT_FILE);
|
---|
460 | write_file_to_stream_from_file(bkpinfo, xattr_fname);
|
---|
461 | write_header_block_to_stream(-1, xattr_fname, BLK_STOP_EXAT_FILE);
|
---|
462 | // acl
|
---|
463 | write_header_block_to_stream(length_of_file(acl_fname), acl_fname, BLK_START_EXAT_FILE);
|
---|
464 | write_file_to_stream_from_file(bkpinfo, acl_fname);
|
---|
465 | write_header_block_to_stream(-1, acl_fname, BLK_STOP_EXAT_FILE);
|
---|
466 | write_header_block_to_stream(length_of_file(xattr_fname), xattr_fname, BLK_STOP_EXTENDED_ATTRIBUTES);
|
---|
467 | return(res);
|
---|
468 | }
|
---|
469 |
|
---|
470 |
|
---|
471 |
|
---|
472 |
|
---|
473 | /**
|
---|
474 | * Tell the user to insert tape @p tapeno and wait for it to settle (5 seconds).
|
---|
475 | * @param tapeno The tape number to insist on.
|
---|
476 | * @bug There is currently no way to actually verify that the user has actually
|
---|
477 | * inserted the right tape.
|
---|
478 | */
|
---|
479 | void insist_on_this_tape_number(int tapeno)
|
---|
480 | {
|
---|
481 | int i;
|
---|
482 | char tmp[MAX_STR_LEN];
|
---|
483 |
|
---|
484 | log_it("Insisting on tape #%d", tapeno);
|
---|
485 | if (g_current_media_number != tapeno)
|
---|
486 | {
|
---|
487 | // log_it("g_current_media_number = %d", g_current_media_number);
|
---|
488 | sprintf(tmp, "When the tape drive goes quiet, please insert volume %d in this series.", tapeno);
|
---|
489 | popup_and_OK (tmp);
|
---|
490 | open_evalcall_form ("Waiting while the tape drive settles");
|
---|
491 | }
|
---|
492 | else
|
---|
493 | {
|
---|
494 | open_evalcall_form ("Waiting while the tape drive rewinds");
|
---|
495 | }
|
---|
496 |
|
---|
497 | for(i=0; i<=100; i+=2)
|
---|
498 | {
|
---|
499 | usleep(100000);
|
---|
500 | update_evalcall_form (i);
|
---|
501 | }
|
---|
502 | close_evalcall_form();
|
---|
503 | log_it("I assume user has inserted it. They _say_ they have...");
|
---|
504 | g_current_media_number = tapeno;
|
---|
505 |
|
---|
506 | // log_it("g_current_media_number = %d", g_current_media_number);
|
---|
507 | log_it("OK, I've finished insisting. On with the revelry.");
|
---|
508 | }
|
---|
509 |
|
---|
510 |
|
---|
511 |
|
---|
512 |
|
---|
513 | /**
|
---|
514 | * Debugging aid - log the offset we're at on the tape (reading or writing).
|
---|
515 | */
|
---|
516 | void
|
---|
517 | log_tape_pos (void)
|
---|
518 | {
|
---|
519 | /*@ buffers ******************************************************/
|
---|
520 |
|
---|
521 |
|
---|
522 | /*@ end vars ****************************************************/
|
---|
523 |
|
---|
524 | log_it ("Tape position -- %ld KB (%ld MB)", (long) g_tape_posK,
|
---|
525 | (long) g_tape_posK >> 10);
|
---|
526 | }
|
---|
527 |
|
---|
528 |
|
---|
529 |
|
---|
530 |
|
---|
531 | /**
|
---|
532 | * Add a file to a collection of recently archived filesets/slices.
|
---|
533 | * The type is determined by the filename: if it contains ".afio." it is
|
---|
534 | * assumed to be a fileset, otherwise if it contains "slice" it's a slice,
|
---|
535 | * otherwise we generate a fatal_error().
|
---|
536 | * @param td The current @c bkpinfo->tempdir (file will be placed in <tt>td</tt>/tmpfs/backcatalog/).
|
---|
537 | * @param latest_fname The file to place in the collection.
|
---|
538 | * @return 0, always.
|
---|
539 | * @bug Return value is redundant.
|
---|
540 | * @bug The detection won't work for uncompressed afioballs (they end in ".afio", no dot afterwards). // Not true. They end in '.' -Hugo
|
---|
541 | */
|
---|
542 | int maintain_collection_of_recent_archives(char *td, char *latest_fname)
|
---|
543 | {
|
---|
544 | long long final_alleged_writeK, final_projected_certain_writeK, final_actually_certain_writeK=0, cposK, bufsize_K;
|
---|
545 | int last, curr, i;
|
---|
546 | t_archtype type=other;
|
---|
547 | char command[MAX_STR_LEN];
|
---|
548 | char tmpdir[MAX_STR_LEN];
|
---|
549 | char old_fname[MAX_STR_LEN];
|
---|
550 | char *p;
|
---|
551 | char suffix[16];
|
---|
552 |
|
---|
553 | bufsize_K = (long long)(1024LL * (1+g_tape_buffer_size_MB) );
|
---|
554 | sprintf(tmpdir, "%s/tmpfs/backcatalog", td);
|
---|
555 | if ((p=strrchr(latest_fname, '.'))) { strcpy(suffix, ++p); } else { suffix[0] = '\0'; }
|
---|
556 | if (strstr(latest_fname, ".afio.") || strstr(latest_fname, ".star.")) { type = fileset; }
|
---|
557 | else if (strstr(latest_fname, "slice")) { type = biggieslice; }
|
---|
558 | else
|
---|
559 | {
|
---|
560 | log_it("fname = %s", latest_fname);
|
---|
561 | fatal_error("Unknown type. Internal error in maintain_collection_of_recent_archives()");
|
---|
562 | }
|
---|
563 | mkdir(tmpdir, 0x700);
|
---|
564 | sprintf(command, "cp -f %s %s", latest_fname, tmpdir);
|
---|
565 | if (run_program_and_log_output(command, 6)) { log_it("Warning - failed to copy %s to backcatalog at %s", latest_fname, tmpdir); }
|
---|
566 | last = g_tapecatalog->entries-1;
|
---|
567 | if ( last<=0 )
|
---|
568 | {
|
---|
569 | iamhere("Too early to start deleting from collection.");
|
---|
570 | return( 0 );
|
---|
571 | }
|
---|
572 | final_alleged_writeK = g_tapecatalog->el[last].tape_posK;
|
---|
573 | final_projected_certain_writeK = final_alleged_writeK - bufsize_K;
|
---|
574 | for( curr=last; curr>=0; curr--)
|
---|
575 | {
|
---|
576 | cposK = g_tapecatalog->el[curr].tape_posK;
|
---|
577 | if (cposK < final_projected_certain_writeK)
|
---|
578 | {
|
---|
579 | final_actually_certain_writeK = cposK;
|
---|
580 | break;
|
---|
581 | }
|
---|
582 | }
|
---|
583 | if ( curr<0 )
|
---|
584 | {
|
---|
585 | iamhere( "Not far enough into tape to start deleting old archives from collection." );
|
---|
586 | return( 0 );
|
---|
587 | }
|
---|
588 | // log_it( "There are %lld KB (more than %d KB) in my backcatalog", final_alleged_writeK - final_actually_certain_writeK, bufsize_K);
|
---|
589 |
|
---|
590 | for(i=curr-1; i>=0 && curr-i<10; i--)
|
---|
591 | {
|
---|
592 | sprintf(old_fname, "%s/%s", tmpdir, g_tapecatalog->el[i].fname);
|
---|
593 | unlink(old_fname);
|
---|
594 | }
|
---|
595 | return(0);
|
---|
596 | }
|
---|
597 |
|
---|
598 |
|
---|
599 |
|
---|
600 |
|
---|
601 | /**
|
---|
602 | * Open the CD stream for input.
|
---|
603 | * @param bkpinfo The backup information structure. Passed to openin_tape().
|
---|
604 | * @return 0 for success, nonzero for failure.
|
---|
605 | * @note Equivalent to openin_tape() for now, but don't count on this behavior.
|
---|
606 | */
|
---|
607 | int
|
---|
608 | openin_cdstream (struct s_bkpinfo *bkpinfo)
|
---|
609 | {
|
---|
610 | return (openin_tape (bkpinfo));
|
---|
611 | }
|
---|
612 |
|
---|
613 | /**
|
---|
614 | * FIFO used to read/write to the tape device.
|
---|
615 | * @bug This seems obsolete now that we call an external @c buffer program. Please look onto this.
|
---|
616 | */
|
---|
617 | char g_tape_fifo[MAX_STR_LEN];
|
---|
618 |
|
---|
619 |
|
---|
620 |
|
---|
621 | int set_tape_block_size_with_mt(char*tapedev, long internal_tape_block_size)
|
---|
622 | {
|
---|
623 | char *tmp;
|
---|
624 | int res;
|
---|
625 |
|
---|
626 | if (strncmp(tapedev, "/dev/", 5))
|
---|
627 | {
|
---|
628 | log_msg(1, "Not using 'mt setblk'. This isn't an actual /dev entry.");
|
---|
629 | return(0);
|
---|
630 | }
|
---|
631 | malloc_string( tmp );
|
---|
632 | sprintf(tmp, "mt -f %s setblk %ld", tapedev, internal_tape_block_size);
|
---|
633 | res = run_program_and_log_output(tmp, 3);
|
---|
634 | paranoid_free( tmp );
|
---|
635 | return(res);
|
---|
636 | }
|
---|
637 |
|
---|
638 |
|
---|
639 |
|
---|
640 | /**
|
---|
641 | * Open the tape device for input.
|
---|
642 | * @param bkpinfo The backup information structure. Fields used:
|
---|
643 | * - @c bkpinfo->media_device
|
---|
644 | * - @c bkpinfo->tmpdir
|
---|
645 | * @return 0 for success, nonzero for failure.
|
---|
646 | * @note This will also work with a cdstream for now, but don't count on this behavior.
|
---|
647 | */
|
---|
648 | int
|
---|
649 | openin_tape (struct s_bkpinfo *bkpinfo)
|
---|
650 | {
|
---|
651 | /*@ buffer ******************************************************/
|
---|
652 | char fname[MAX_STR_LEN];
|
---|
653 | char *datablock;
|
---|
654 | char tmp[MAX_STR_LEN];
|
---|
655 | char old_cwd[MAX_STR_LEN];
|
---|
656 | char outfname[MAX_STR_LEN];
|
---|
657 | /*@ int ********************************************************/
|
---|
658 | int i;
|
---|
659 | int j;
|
---|
660 | int res;
|
---|
661 | long length, templong;
|
---|
662 | size_t k;
|
---|
663 | int retval = 0;
|
---|
664 | int ctrl_chr;
|
---|
665 |
|
---|
666 | /*@ long long **************************************************/
|
---|
667 | long long size;
|
---|
668 |
|
---|
669 | /*@ pointers ***************************************************/
|
---|
670 | FILE *fout;
|
---|
671 |
|
---|
672 | /*@ end vars ****************************************************/
|
---|
673 |
|
---|
674 | assert_string_is_neither_NULL_nor_zerolength(bkpinfo->media_device);
|
---|
675 | if (!(g_tapecatalog = malloc(sizeof(struct s_tapecatalog)))) { fatal_error("Cannot alloc mem for tape catalog"); }
|
---|
676 | g_tapecatalog->entries = 0;
|
---|
677 | g_tape_posK = 0;
|
---|
678 | if (g_tape_stream) { log_it("FYI - I won't 'openin' the tape. It's already open."); return(0); }
|
---|
679 | insist_on_this_tape_number(1);
|
---|
680 | sprintf (outfname, "%s/tmp/all.tar.gz", bkpinfo->tmpdir);
|
---|
681 | make_hole_for_file (outfname);
|
---|
682 |
|
---|
683 | set_tape_block_size_with_mt(bkpinfo->media_device, bkpinfo->internal_tape_block_size);
|
---|
684 |
|
---|
685 | // start_buffer_process( bkpinfo->media_device, g_tape_fifo, FALSE);
|
---|
686 | log_it ("Opening IN tape");
|
---|
687 | if (!(g_tape_stream = open_device_via_buffer(bkpinfo->media_device, 'r', bkpinfo->internal_tape_block_size))) { log_OS_error(g_tape_fifo); log_to_screen ("Cannot openin stream device"); return(1); }
|
---|
688 | log_to_screen ("Reading stream");
|
---|
689 | log_it ("stream device = '%s'", bkpinfo->media_device);
|
---|
690 | /* skip data disks */
|
---|
691 | open_evalcall_form ("Skipping data disks on stream");
|
---|
692 | log_to_screen ("Skipping data disks on stream");
|
---|
693 | if (!(fout = fopen (outfname, "w")))
|
---|
694 | {
|
---|
695 | log_OS_error(outfname);
|
---|
696 | log_to_screen ("Cannot openout datadisk all.tar.gz file");
|
---|
697 | return(-1);
|
---|
698 | }
|
---|
699 | if (!(datablock = (char*)malloc(256*1024))) { log_to_screen("Unable to malloc 256*1024"); exit(1); }
|
---|
700 | for (i = 0; i < 32; i++)
|
---|
701 | {
|
---|
702 | for (j = 0; j < 4; j++)
|
---|
703 | {
|
---|
704 | for(length=0, k=0; length<256*1024; length+=k)
|
---|
705 | {
|
---|
706 | k=fread(datablock+length, 1, 256*1024 - length, g_tape_stream);
|
---|
707 | }
|
---|
708 | (void) fwrite (datablock, 1, (size_t) length, fout);
|
---|
709 | g_tape_posK += length/1024;
|
---|
710 | }
|
---|
711 | if (i>8) // otherwise, 'buffer' distorts calculations
|
---|
712 | {
|
---|
713 | templong = ((i-8) * 4 + j) * 100 / (128-8*4);
|
---|
714 | update_evalcall_form ((int)(templong));
|
---|
715 | }
|
---|
716 | }
|
---|
717 | paranoid_fclose (fout);
|
---|
718 | paranoid_free(datablock);
|
---|
719 | /* find initial blocks */
|
---|
720 | res = read_header_block_from_stream (&size, fname, &ctrl_chr);
|
---|
721 | retval += res;
|
---|
722 | if (ctrl_chr != BLK_START_OF_TAPE)
|
---|
723 | {
|
---|
724 | wrong_marker (BLK_START_OF_TAPE, ctrl_chr);
|
---|
725 | }
|
---|
726 | res = read_header_block_from_stream (&size, fname, &ctrl_chr);
|
---|
727 | retval += res;
|
---|
728 | if (ctrl_chr != BLK_START_OF_BACKUP)
|
---|
729 | {
|
---|
730 | wrong_marker (BLK_START_OF_BACKUP, ctrl_chr);
|
---|
731 | }
|
---|
732 | close_evalcall_form ();
|
---|
733 | log_it ("Saved all.tar.gz to '%s'", outfname);
|
---|
734 | (void) getcwd (old_cwd, MAX_STR_LEN);
|
---|
735 | chdir (bkpinfo->tmpdir);
|
---|
736 | sprintf (tmp, "tar -zxf %s tmp/mondo-restore.cfg 2> /dev/null", outfname);
|
---|
737 | paranoid_system(tmp);
|
---|
738 | paranoid_system ("cp -f tmp/mondo-restore.cfg . 2> /dev/null");
|
---|
739 | chdir (old_cwd);
|
---|
740 | unlink (outfname);
|
---|
741 | return (retval);
|
---|
742 | }
|
---|
743 |
|
---|
744 |
|
---|
745 | /**
|
---|
746 | * Start writing to a CD stream.
|
---|
747 | * @param cddev The CD device to openout via cdrecord.
|
---|
748 | * @param speed The speed to write at.
|
---|
749 | * @return 0 for success, nonzero for failure.
|
---|
750 | * @note This should be called only from backup processes.
|
---|
751 | */
|
---|
752 | int
|
---|
753 | openout_cdstream (char *cddev, int speed)
|
---|
754 | {
|
---|
755 | /*@ buffers ******************************************************/
|
---|
756 | char command[MAX_STR_LEN*2];
|
---|
757 |
|
---|
758 | /*@ end vars ****************************************************/
|
---|
759 |
|
---|
760 | /* add 'dummy' if testing */
|
---|
761 | sprintf (command,
|
---|
762 | "cdrecord -eject dev=%s speed=%d fs=24m -waiti - >> %s 2>> %s",
|
---|
763 | cddev, speed, MONDO_LOGFILE, MONDO_LOGFILE);
|
---|
764 | /* initialise the catalog */
|
---|
765 | g_current_media_number = 1;
|
---|
766 | if (!(g_tapecatalog = malloc(sizeof(struct s_tapecatalog)))) { fatal_error("Cannot alloc mem for tape catalog"); }
|
---|
767 | g_tapecatalog->entries = 0;
|
---|
768 | /* log stuff */
|
---|
769 | log_it ("Opening OUT cdstream with the command");
|
---|
770 | log_it (command);
|
---|
771 | /* log_it("Let's see what happens, shall we?"); */
|
---|
772 | g_tape_stream = popen (command, "w");
|
---|
773 | if (g_tape_stream)
|
---|
774 | {
|
---|
775 | return (0);
|
---|
776 | }
|
---|
777 | else
|
---|
778 | {
|
---|
779 | log_to_screen ("Failed to openout to cdstream (fifo)");
|
---|
780 | return (1);
|
---|
781 | }
|
---|
782 | }
|
---|
783 |
|
---|
784 | /**
|
---|
785 | * Start writing to a tape device for the backup.
|
---|
786 | * @param tapedev The tape device to open for writing.
|
---|
787 | * @return 0 for success, nonzero for failure.
|
---|
788 | * @note This should be called ONLY from backup processes. It will OVERWRITE ANY
|
---|
789 | * EXISTING DATA on the tape!
|
---|
790 | */
|
---|
791 | int
|
---|
792 | openout_tape (char *tapedev, long internal_tape_block_size)
|
---|
793 | {
|
---|
794 | // char sz_call_to_buffer[MAX_STR_LEN];
|
---|
795 |
|
---|
796 | g_current_media_number = 1;
|
---|
797 | if (g_tape_stream) { log_it("FYI - I won't 'openout' the tape. It's already open."); return(0); }
|
---|
798 | if (!(g_tapecatalog = malloc(sizeof(struct s_tapecatalog)))) { fatal_error("Cannot alloc mem for tape catalog"); }
|
---|
799 | g_tapecatalog->entries = 0;
|
---|
800 | g_tape_posK = 0;
|
---|
801 |
|
---|
802 | set_tape_block_size_with_mt(tapedev, internal_tape_block_size);
|
---|
803 | log_it ("Opening OUT tape");
|
---|
804 | if (!(g_tape_stream = open_device_via_buffer(tapedev, 'w', internal_tape_block_size))) { log_OS_error(g_tape_fifo); log_to_screen ("Cannot openin stream device"); return(1); }
|
---|
805 | return(0);
|
---|
806 | }
|
---|
807 |
|
---|
808 |
|
---|
809 |
|
---|
810 |
|
---|
811 | /**
|
---|
812 | * Copy a file from the opened stream (CD or tape) to @p outfile.
|
---|
813 | * @param bkpinfo The backup information structure. @c bkpinfo->media_device is the only field used.
|
---|
814 | * @param outfile The file to write to.
|
---|
815 | * @param size The size of the file in the input stream.
|
---|
816 | * @return 0 for success, nonzero for failure.
|
---|
817 | */
|
---|
818 | int
|
---|
819 | read_file_from_stream_to_file (struct s_bkpinfo *bkpinfo, char *outfile,
|
---|
820 | long long size)
|
---|
821 | {
|
---|
822 |
|
---|
823 | /*@ int *********************************************************/
|
---|
824 | int res;
|
---|
825 |
|
---|
826 | /*@ end vars ****************************************************/
|
---|
827 |
|
---|
828 | res = read_file_from_stream_FULL (bkpinfo, outfile, NULL, size);
|
---|
829 |
|
---|
830 | return (res);
|
---|
831 | }
|
---|
832 |
|
---|
833 |
|
---|
834 |
|
---|
835 | /**
|
---|
836 | * Copy a file from the currently opened stream (CD or tape) to the stream indicated
|
---|
837 | * by @p fout.
|
---|
838 | * @param bkpinfo The backup information structure. @c bkpinfo->media_size is the only field used.
|
---|
839 | * @param fout The stream to write the file to.
|
---|
840 | * @param size The size of the file in bytes.
|
---|
841 | * @return 0 for success, nonzero for failure.
|
---|
842 | */
|
---|
843 | int
|
---|
844 | read_file_from_stream_to_stream (struct s_bkpinfo *bkpinfo, FILE * fout,
|
---|
845 | long long size)
|
---|
846 | {
|
---|
847 |
|
---|
848 | /*@ int *********************************************************/
|
---|
849 | int res;
|
---|
850 |
|
---|
851 | /*@ end vars ****************************************************/
|
---|
852 |
|
---|
853 | res = read_file_from_stream_FULL (bkpinfo, NULL, fout, size);
|
---|
854 | /* fflush(g_tape_stream);
|
---|
855 | fflush(fout);*/
|
---|
856 | return (res);
|
---|
857 | }
|
---|
858 |
|
---|
859 |
|
---|
860 |
|
---|
861 | /**
|
---|
862 | * Copy a file from the currently opened stream (CD or tape) to either a
|
---|
863 | * @c FILE pointer indicating a currently-opened file, or a filename indicating
|
---|
864 | * a new file to create. This is the backbone function that read_file_from_stream_to_file()
|
---|
865 | * and read_file_from_stream_to_stream() are wrappers for.
|
---|
866 | * @param bkpinfo The backup information structure. @c bkpinfo->media_size is the only field used.
|
---|
867 | * @param outfname If non-NULL, write to this file.
|
---|
868 | * @param foutstream If non-NULL, write to this stream.
|
---|
869 | * @param orig_size The original length of the file in bytes.
|
---|
870 | * @return 0 for success, nonzero for failure.
|
---|
871 | * @note Only @b one of @p outfname or @p foutstream may be non-NULL.
|
---|
872 | */
|
---|
873 | int
|
---|
874 | read_file_from_stream_FULL (struct s_bkpinfo *bkpinfo, char *outfname,
|
---|
875 | FILE * foutstream, long long orig_size)
|
---|
876 | {
|
---|
877 | /*@ buffers ******************************************************/
|
---|
878 | char *tmp;
|
---|
879 | char *datablock;
|
---|
880 | char *temp_fname;
|
---|
881 | char *temp_cksum;
|
---|
882 | char *actual_cksum;
|
---|
883 | // char *pA, *pB;
|
---|
884 |
|
---|
885 | /*@ int **********************************************************/
|
---|
886 | int retval = 0;
|
---|
887 | #ifdef EXTRA_TAPE_CHECKSUMS
|
---|
888 | int i, ch;
|
---|
889 | #endif
|
---|
890 | int noof_blocks;
|
---|
891 | int ctrl_chr;
|
---|
892 | int res;
|
---|
893 | /*@ pointers *****************************************************/
|
---|
894 | FILE *fout;
|
---|
895 |
|
---|
896 | /*@ long ******************************************************/
|
---|
897 | long bytes_to_write = 0 /*,i */ ;
|
---|
898 | // long bytes_successfully_read_in_this_time = 0;
|
---|
899 |
|
---|
900 | /*@ long long ****************************************************/
|
---|
901 | long long temp_size, size;
|
---|
902 | long bytes_read, bytes_to_read;
|
---|
903 | long long total_read_from_tape_for_this_file = 0;
|
---|
904 | long long where_I_was_before_tape_change = 0;
|
---|
905 | /*@ unsigned int *************************************************/
|
---|
906 | /* unsigned int ch; */
|
---|
907 | unsigned int crc16;
|
---|
908 | unsigned int crctt;
|
---|
909 |
|
---|
910 | bool had_to_resync=FALSE;
|
---|
911 |
|
---|
912 | /*@ init ********************************************************/
|
---|
913 | malloc_string(tmp);
|
---|
914 | malloc_string(temp_fname);
|
---|
915 | malloc_string(temp_cksum);
|
---|
916 | malloc_string(actual_cksum);
|
---|
917 | datablock = malloc(TAPE_BLOCK_SIZE);
|
---|
918 | crc16 = 0;
|
---|
919 | crctt = 0;
|
---|
920 | size = orig_size;
|
---|
921 |
|
---|
922 | /*@ end vars ****************************************************/
|
---|
923 |
|
---|
924 | res = read_header_block_from_stream (&temp_size, temp_fname, &ctrl_chr);
|
---|
925 | if (orig_size != temp_size && orig_size != -1)
|
---|
926 | {
|
---|
927 | sprintf (tmp,
|
---|
928 | "output file's size should be %ld K but is apparently %ld K",
|
---|
929 | (long) size >> 10, (long) temp_size >> 10);
|
---|
930 | log_to_screen (tmp);
|
---|
931 | }
|
---|
932 | if (ctrl_chr != BLK_START_FILE)
|
---|
933 | {
|
---|
934 | wrong_marker (BLK_START_FILE, ctrl_chr);
|
---|
935 | return(1);
|
---|
936 | }
|
---|
937 | sprintf (tmp, "Reading file from tape; writing to '%s'; %ld KB", outfname,
|
---|
938 | (long) size >> 10);
|
---|
939 |
|
---|
940 | if (foutstream) { fout = foutstream; }
|
---|
941 | else { fout = fopen (outfname, "w"); }
|
---|
942 | if (!fout)
|
---|
943 | {
|
---|
944 | log_OS_error (outfname);
|
---|
945 | log_to_screen ("Cannot openout file");
|
---|
946 | return(1);
|
---|
947 | }
|
---|
948 | total_read_from_tape_for_this_file = 0;
|
---|
949 | for (noof_blocks = 0; size > 0; noof_blocks++, size-=bytes_to_write, total_read_from_tape_for_this_file+=bytes_read)
|
---|
950 | {
|
---|
951 | bytes_to_write = (size < TAPE_BLOCK_SIZE) ? (long)size : TAPE_BLOCK_SIZE;
|
---|
952 | bytes_to_read = TAPE_BLOCK_SIZE;
|
---|
953 | bytes_read = fread(datablock, 1, bytes_to_read, g_tape_stream);
|
---|
954 | while(bytes_read < bytes_to_read)
|
---|
955 | { // next tape!
|
---|
956 | // crctt=crc16=0;
|
---|
957 | where_I_was_before_tape_change = size;
|
---|
958 | log_msg(4, "where_I_was_... = %lld", where_I_was_before_tape_change);
|
---|
959 | start_to_read_from_next_tape(bkpinfo);
|
---|
960 | log_msg(4, "Started reading from next tape.");
|
---|
961 | skip_incoming_files_until_we_find_this_one(temp_fname);
|
---|
962 | log_msg(4, "Skipped irrelevant files OK.");
|
---|
963 | for(size = orig_size; size > where_I_was_before_tape_change; size-=bytes_to_write)
|
---|
964 | {
|
---|
965 | bytes_read = fread(datablock, 1, bytes_to_read, g_tape_stream);
|
---|
966 | }
|
---|
967 | log_msg(4, "'size' is now %lld (should be %lld)", size, where_I_was_before_tape_change);
|
---|
968 | log_to_screen("Successfully re-sync'd tape");
|
---|
969 | had_to_resync = TRUE;
|
---|
970 | bytes_read = fread(datablock, 1, bytes_to_read, g_tape_stream);
|
---|
971 | }
|
---|
972 |
|
---|
973 | (void) fwrite (datablock, 1, (size_t) bytes_to_write, fout); // for blocking reasons, bytes_successfully_read_in isn't necessarily the same as bytes_to_write
|
---|
974 |
|
---|
975 | #ifdef EXTRA_TAPE_CHECKSUMS
|
---|
976 | for(i=0;i<(int)bytes_to_write;i++)
|
---|
977 | {
|
---|
978 | ch=datablock[i];
|
---|
979 | crc16=updcrcr(crc16,(unsigned)ch);
|
---|
980 | crctt=updcrc(crctt,(unsigned)ch);
|
---|
981 | }
|
---|
982 | #endif
|
---|
983 | }
|
---|
984 | log_msg(6, "Total read from tape for this file = %lld", total_read_from_tape_for_this_file);
|
---|
985 | log_msg(6, ".......................... Should be %lld", orig_size);
|
---|
986 | g_tape_posK += total_read_from_tape_for_this_file/1024;
|
---|
987 | sprintf (actual_cksum, "%04x%04x", crc16, crctt);
|
---|
988 | if (foutstream)
|
---|
989 | { /*log_it("Finished writing to foutstream"); */
|
---|
990 | }
|
---|
991 | else
|
---|
992 | {
|
---|
993 | paranoid_fclose (fout);
|
---|
994 | }
|
---|
995 | res = read_header_block_from_stream (&temp_size, temp_cksum, &ctrl_chr);
|
---|
996 | if (ctrl_chr != BLK_STOP_FILE)
|
---|
997 | {
|
---|
998 | wrong_marker (BLK_STOP_FILE, ctrl_chr);
|
---|
999 | // fatal_error("Bad marker"); // return(1);
|
---|
1000 | }
|
---|
1001 | if (strcmp (temp_cksum, actual_cksum))
|
---|
1002 | {
|
---|
1003 | sprintf (tmp, "actual cksum=%s; recorded cksum=%s", actual_cksum,
|
---|
1004 | temp_cksum);
|
---|
1005 | log_to_screen (tmp);
|
---|
1006 | sprintf (tmp, "%s (%ld K) is corrupt on tape", temp_fname,
|
---|
1007 | (long) orig_size >> 10);
|
---|
1008 | log_to_screen (tmp);
|
---|
1009 | retval++;
|
---|
1010 | }
|
---|
1011 | else
|
---|
1012 | {
|
---|
1013 | sprintf (tmp, "%s is GOOD on tape", temp_fname);
|
---|
1014 | /* log_it(tmp); */
|
---|
1015 | }
|
---|
1016 | paranoid_free(datablock);
|
---|
1017 | paranoid_free(tmp);
|
---|
1018 | paranoid_free(temp_fname);
|
---|
1019 | paranoid_free(temp_cksum);
|
---|
1020 | paranoid_free(actual_cksum);
|
---|
1021 | return (retval);
|
---|
1022 | }
|
---|
1023 |
|
---|
1024 |
|
---|
1025 |
|
---|
1026 | /**
|
---|
1027 | * Read a header block from the currently opened stream (CD or tape).
|
---|
1028 | * This block indicates the length of the following file (if it's file-related)
|
---|
1029 | * the filename (if it's file-related), and the block type.
|
---|
1030 | * @param plen Where to put the length of the file. Valid only for file-related header blocks.
|
---|
1031 | * @param filename Where to put the name of the file. Valid only for file-related header blocks.
|
---|
1032 | * @param pcontrol_char Where to put the type of block (e.g. start-file, end-file, start-tape, ...)
|
---|
1033 | * @return 0 for success, nonzero for failure.
|
---|
1034 | * @note If you read a marker (@p pcontrol_char) you're not expecting, you can call wrong_marker().
|
---|
1035 | */
|
---|
1036 | int
|
---|
1037 | read_header_block_from_stream (long long *plen, char *filename,
|
---|
1038 | int *pcontrol_char)
|
---|
1039 | {
|
---|
1040 |
|
---|
1041 | /*@ buffers ******************************************************/
|
---|
1042 | char *tempblock;
|
---|
1043 |
|
---|
1044 | /*@ int **********************************************************/
|
---|
1045 | int i, retval;
|
---|
1046 |
|
---|
1047 | /*@ end vars ****************************************************/
|
---|
1048 |
|
---|
1049 | tempblock = (char*)malloc((size_t) TAPE_BLOCK_SIZE);
|
---|
1050 |
|
---|
1051 | for (i = 0; i < (int) TAPE_BLOCK_SIZE; i++)
|
---|
1052 | {
|
---|
1053 | tempblock[i] = 0;
|
---|
1054 | }
|
---|
1055 | while(!(*pcontrol_char = tempblock[7000]))
|
---|
1056 | {
|
---|
1057 | g_tape_posK += fread (tempblock, 1, (size_t) TAPE_BLOCK_SIZE, g_tape_stream) / 1024;
|
---|
1058 | }
|
---|
1059 | /* memcpy((char*)plength_of_incoming_file,(char*)tempblock+7001,sizeof(long long)); */
|
---|
1060 | /* for(*plen=0,i=7;i>=0;i--) {*plen<<=8; *plen |= tempblock[7001+i];} */
|
---|
1061 | memcpy ((char *) plen, tempblock + 7001, sizeof (long long));
|
---|
1062 | if (strcmp (tempblock + 6000 + *pcontrol_char, "Mondolicious, baby"))
|
---|
1063 | {
|
---|
1064 | log_it ("Bad header block at %ld K", (long) g_tape_posK);
|
---|
1065 | }
|
---|
1066 | strcpy (filename, tempblock + 1000);
|
---|
1067 | /* strcpy(cksum,tempblock+5555);*/
|
---|
1068 | /* log_it( "%s (reading) fname=%s, filesize=%ld K",
|
---|
1069 | marker_to_string (*pcontrol_char), filename,
|
---|
1070 | (long) ((*plen) >> 10));
|
---|
1071 | */
|
---|
1072 | if (*pcontrol_char == BLK_ABORTED_BACKUP)
|
---|
1073 | {
|
---|
1074 | log_to_screen ("I can't verify an aborted backup.");
|
---|
1075 | retval=1;
|
---|
1076 | }
|
---|
1077 | else
|
---|
1078 | { retval=0; }
|
---|
1079 | for(i=1000; i<1020; i++) { if (tempblock[i]<32 || tempblock[i]>126) { tempblock[i]=' '; } }
|
---|
1080 | tempblock[i] = '\0';
|
---|
1081 | log_msg(6, "%s (fname=%s, size=%ld K)", marker_to_string (*pcontrol_char),
|
---|
1082 | tempblock+1000, (long) (*plen) >> 10);
|
---|
1083 | paranoid_free(tempblock);
|
---|
1084 | return (retval);
|
---|
1085 | }
|
---|
1086 |
|
---|
1087 |
|
---|
1088 |
|
---|
1089 | /**
|
---|
1090 | * Add specified file/slice to the internal catalog of all archives written.
|
---|
1091 | * This lets us restart on a new CD/tape/whatever if it runs out of room. We just
|
---|
1092 | * write the last [buffer size] MB from the catalog to the new tape, so we know
|
---|
1093 | * we have @e all archives on some CD/tape/whatever.
|
---|
1094 | * @param type The type of file we're cataloging (afioball, slice, something else)
|
---|
1095 | * @param number The fileset number or biggiefile number.
|
---|
1096 | * @param aux The slice number if it's a biggiefile, or any other additional info.
|
---|
1097 | * @param fn The original full pathname of the file we're recording.
|
---|
1098 | * @return The index of the record we just added.
|
---|
1099 | */
|
---|
1100 | int register_in_tape_catalog(t_archtype type, int number, long aux, char*fn)
|
---|
1101 | {
|
---|
1102 | int last;
|
---|
1103 | char fname[MAX_TAPECAT_FNAME_LEN];
|
---|
1104 | char *p;
|
---|
1105 |
|
---|
1106 | p = strrchr(fn, '/');
|
---|
1107 | if (p) { p++; } else { p = fn; }
|
---|
1108 | strncpy(fname, p, MAX_TAPECAT_FNAME_LEN);
|
---|
1109 | fname[MAX_TAPECAT_FNAME_LEN] = '\0';
|
---|
1110 | last = g_tapecatalog->entries;
|
---|
1111 | if (last >= MAX_TAPECATALOG_ENTRIES)
|
---|
1112 | {
|
---|
1113 | log_it("Warning - can't log #%d in tape catalog - too many entries already", number);
|
---|
1114 | return(-1);
|
---|
1115 | }
|
---|
1116 | g_tapecatalog->el[last].type = type;
|
---|
1117 | g_tapecatalog->el[last].number = number;
|
---|
1118 | g_tapecatalog->el[last].aux = aux;
|
---|
1119 | g_tapecatalog->el[last].tape_posK = g_tape_posK;
|
---|
1120 | strcpy(g_tapecatalog->el[last].fname, fname);
|
---|
1121 | g_tapecatalog->entries ++;
|
---|
1122 | return(last); // returns the index of the record we've jsut added
|
---|
1123 | }
|
---|
1124 |
|
---|
1125 |
|
---|
1126 |
|
---|
1127 |
|
---|
1128 | /**
|
---|
1129 | * Decide whether we should start a new tape. This is TRUE if we've run out of tape
|
---|
1130 | * (got SIGPIPE) or look like we will.
|
---|
1131 | * @param mediasize The size of the tape in megabytes.
|
---|
1132 | * @param length_of_incoming_file The length of the file we're about to write, in bytes.
|
---|
1133 | * @bug This seems like it'll only work for media_size != autodetect, but Mondo only allows
|
---|
1134 | * autodetecting the size. Huh?
|
---|
1135 | */
|
---|
1136 | bool
|
---|
1137 | should_we_write_to_next_tape (long mediasize,
|
---|
1138 | long long length_of_incoming_file)
|
---|
1139 | {
|
---|
1140 | /*@ bool's ******************************************************/
|
---|
1141 | bool we_need_a_new_tape = FALSE;
|
---|
1142 |
|
---|
1143 | /*@ end vars ****************************************************/
|
---|
1144 |
|
---|
1145 | if (mediasize==0) { return(FALSE); }
|
---|
1146 | if (mediasize>0 && (g_tape_posK >> 10 >= mediasize))
|
---|
1147 | {
|
---|
1148 | log_it("mediasize = %ld", mediasize);
|
---|
1149 | we_need_a_new_tape = TRUE;
|
---|
1150 | log_to_screen ("Should have started a new tape/CD already");
|
---|
1151 | }
|
---|
1152 | if ((g_tape_posK + length_of_incoming_file / 1024) >> 10 >= mediasize-(SLICE_SIZE*4/1024))
|
---|
1153 | {
|
---|
1154 | log_it("g_tape_posK = %ld\nmediasize = %ld\n", g_tape_posK, mediasize);
|
---|
1155 | we_need_a_new_tape = TRUE;
|
---|
1156 | }
|
---|
1157 | return (we_need_a_new_tape);
|
---|
1158 | }
|
---|
1159 |
|
---|
1160 |
|
---|
1161 | /**
|
---|
1162 | * Seek through the stream until we find a header block where the NAME field matches
|
---|
1163 | * @p the_file_I_was_reading. This is useful if you've just started reading from
|
---|
1164 | * a new tape and want to find the file you were reading when the tape ended.
|
---|
1165 | * @param the_file_I_was_reading File name to look for.
|
---|
1166 | * @return 0 for success, nonzero for failure.
|
---|
1167 | */
|
---|
1168 | int skip_incoming_files_until_we_find_this_one(char*the_file_I_was_reading)
|
---|
1169 | {
|
---|
1170 | char*pA;
|
---|
1171 | char*pB;
|
---|
1172 | int res;
|
---|
1173 | int ctrl_chr;
|
---|
1174 | char *temp_fname;
|
---|
1175 | char *datablock;
|
---|
1176 | long long temp_size, size;
|
---|
1177 | long bytes_to_write;
|
---|
1178 |
|
---|
1179 | datablock = malloc(TAPE_BLOCK_SIZE);
|
---|
1180 | malloc_string(temp_fname);
|
---|
1181 | pB = strrchr(the_file_I_was_reading, '/'); if (pB) { pB++; } else { pB = the_file_I_was_reading; }
|
---|
1182 | log_msg(1, "skip_incoming_..(%s)", pB);
|
---|
1183 | log_msg(2, "Looking for initial START_AN_AFIO_OR_SLICE");
|
---|
1184 | ctrl_chr=-1;
|
---|
1185 | while(ctrl_chr != BLK_START_AN_AFIO_OR_SLICE)
|
---|
1186 | {
|
---|
1187 | res=read_header_block_from_stream (&temp_size, temp_fname, &ctrl_chr);
|
---|
1188 | if (ctrl_chr == BLK_START_AN_AFIO_OR_SLICE)
|
---|
1189 | { break; }
|
---|
1190 | log_msg(1, "%lld %s %c", temp_size, temp_fname, ctrl_chr);
|
---|
1191 | wrong_marker(BLK_START_AN_AFIO_OR_SLICE, ctrl_chr);
|
---|
1192 | log_msg(3, "Still trying to re-sync w/ tape");
|
---|
1193 | }
|
---|
1194 | while(ctrl_chr != BLK_START_FILE)
|
---|
1195 | {
|
---|
1196 | res=read_header_block_from_stream (&temp_size, temp_fname, &ctrl_chr);
|
---|
1197 | if (ctrl_chr == BLK_START_FILE)
|
---|
1198 | { break; }
|
---|
1199 | log_msg(1, "%lld %s %c", temp_size, temp_fname, ctrl_chr);
|
---|
1200 | wrong_marker(BLK_START_FILE, ctrl_chr);
|
---|
1201 | log_msg(3, "Still trying to re-sync w/ tape");
|
---|
1202 | }
|
---|
1203 | pA = strrchr(temp_fname, '/'); if (pA) { pA++; } else { pA = temp_fname; }
|
---|
1204 | pB = strrchr(the_file_I_was_reading, '/'); if (pB) { pB++; } else { pB = the_file_I_was_reading; }
|
---|
1205 | while (strcmp(pA, pB))
|
---|
1206 | {
|
---|
1207 | log_msg(6, "Skipping %s (it's not %s)", temp_fname, the_file_I_was_reading);
|
---|
1208 | for(size=temp_size; size>0; size-=bytes_to_write)
|
---|
1209 | {
|
---|
1210 | bytes_to_write = (size < TAPE_BLOCK_SIZE) ? (long)size : TAPE_BLOCK_SIZE;
|
---|
1211 | // FIXME - needs error-checking and -catching
|
---|
1212 | fread(datablock,1,(size_t) TAPE_BLOCK_SIZE, g_tape_stream);
|
---|
1213 | }
|
---|
1214 | res = read_header_block_from_stream (&temp_size, temp_fname, &ctrl_chr);
|
---|
1215 | if (ctrl_chr != BLK_STOP_FILE) { wrong_marker (BLK_STOP_FILE, ctrl_chr); }
|
---|
1216 | res = read_header_block_from_stream (&temp_size, temp_fname, &ctrl_chr);
|
---|
1217 | if (ctrl_chr != BLK_STOP_AN_AFIO_OR_SLICE) { wrong_marker(BLK_STOP_AN_AFIO_OR_SLICE, ctrl_chr); }
|
---|
1218 | res = read_header_block_from_stream (&temp_size, temp_fname, &ctrl_chr);
|
---|
1219 | if (ctrl_chr != BLK_START_AN_AFIO_OR_SLICE) { wrong_marker(BLK_START_AN_AFIO_OR_SLICE, ctrl_chr); }
|
---|
1220 | res = read_header_block_from_stream (&temp_size, temp_fname, &ctrl_chr);
|
---|
1221 | if (ctrl_chr != BLK_START_FILE) { wrong_marker(BLK_START_FILE, ctrl_chr); }
|
---|
1222 | pA = strrchr(temp_fname, '/'); if (pA) { pA++; } else { pA = temp_fname; }
|
---|
1223 | pB = strrchr(the_file_I_was_reading, '/'); if (pB) { pB++; } else { pB = the_file_I_was_reading; }
|
---|
1224 | }
|
---|
1225 | log_msg(2, "Reading %s (it matches %s)", temp_fname, the_file_I_was_reading);
|
---|
1226 | paranoid_free(temp_fname);
|
---|
1227 | paranoid_free(datablock);
|
---|
1228 | return(0);
|
---|
1229 | }
|
---|
1230 |
|
---|
1231 |
|
---|
1232 | /**
|
---|
1233 | * Start to read from the next tape. Assumes the user has already inserted it.
|
---|
1234 | * @param bkpinfo The backup information structure. @c bkpinfo->media_device is the only field used.
|
---|
1235 | * @return 0 for success, nonzero for failure.
|
---|
1236 | */
|
---|
1237 | int
|
---|
1238 | start_to_read_from_next_tape (struct s_bkpinfo *bkpinfo)
|
---|
1239 | {
|
---|
1240 | /*@ int **********************************************************/
|
---|
1241 | int res = 0;
|
---|
1242 | char *sz_msg;
|
---|
1243 | int ctrlchr;
|
---|
1244 | long long temp_size;
|
---|
1245 | malloc_string(sz_msg);
|
---|
1246 | /*@ end vars ****************************************************/
|
---|
1247 |
|
---|
1248 | paranoid_pclose(g_tape_stream);
|
---|
1249 | system("sync");system("sync");system("sync");
|
---|
1250 | log_it ("Next tape requested.");
|
---|
1251 | insist_on_this_tape_number(g_current_media_number+1); // will increment it, too
|
---|
1252 | log_it ("Opening IN the next tape");
|
---|
1253 | if (!(g_tape_stream = open_device_via_buffer(bkpinfo->media_device, 'r', bkpinfo->internal_tape_block_size))) { log_OS_error(g_tape_fifo); log_to_screen ("Cannot openin stream device"); return(1); }
|
---|
1254 | g_tape_posK = 0;
|
---|
1255 | g_sigpipe = FALSE;
|
---|
1256 | res+=read_header_block_from_stream (&temp_size, sz_msg, &ctrlchr); /* just in case */
|
---|
1257 | if (ctrlchr != BLK_START_OF_TAPE) { wrong_marker (BLK_START_OF_TAPE, ctrlchr); }
|
---|
1258 | res+=read_header_block_from_stream (&temp_size, sz_msg, &ctrlchr); /* just in case */
|
---|
1259 | if (ctrlchr != BLK_START_OF_BACKUP) { wrong_marker (BLK_START_OF_BACKUP, ctrlchr); }
|
---|
1260 | else { log_msg(3, "Next tape opened OK. Whoopee!"); }
|
---|
1261 | paranoid_free(sz_msg);
|
---|
1262 | return (res);
|
---|
1263 | }
|
---|
1264 |
|
---|
1265 |
|
---|
1266 |
|
---|
1267 | /**
|
---|
1268 | * Start to write to the next tape. Assume the user has already inserted it.
|
---|
1269 | * @param bkpinfo The backup information structure. @c bkpinfo->media_device is the only field used.
|
---|
1270 | * @return 0 for success, nonzero for failure.
|
---|
1271 | */
|
---|
1272 | int
|
---|
1273 | start_to_write_to_next_tape (struct s_bkpinfo *bkpinfo)
|
---|
1274 | {
|
---|
1275 | int res=0;
|
---|
1276 | char command[MAX_STR_LEN*2];
|
---|
1277 | paranoid_pclose(g_tape_stream);
|
---|
1278 | system("sync");system("sync");system("sync");
|
---|
1279 | log_it ("New tape requested.");
|
---|
1280 | insist_on_this_tape_number(g_current_media_number+1); // will increment g_current_media, too
|
---|
1281 | if (g_current_media_number > MAX_NOOF_MEDIA) { res++; log_to_screen("Too many tapes. Man, you need to use nfs!"); }
|
---|
1282 | if (bkpinfo->backup_media_type == cdstream)
|
---|
1283 | {
|
---|
1284 | sprintf (command, "cdrecord -eject dev=%s speed=%d fs=24m -waiti - >> %s 2>> %s", bkpinfo->media_device, bkpinfo->cdrw_speed, MONDO_LOGFILE, MONDO_LOGFILE);
|
---|
1285 | log_it ("Opening OUT to next CD with the command");
|
---|
1286 | log_it (command);
|
---|
1287 | log_it ("Let's see what happens, shall we?");
|
---|
1288 | g_tape_stream = popen (command, "w");
|
---|
1289 | if (!g_tape_stream)
|
---|
1290 | {
|
---|
1291 | log_to_screen ("Failed to openout to cdstream (fifo)");
|
---|
1292 | return (1);
|
---|
1293 | }
|
---|
1294 | }
|
---|
1295 | else
|
---|
1296 | {
|
---|
1297 | log_it ("Opening OUT to next tape");
|
---|
1298 | if (!(g_tape_stream = open_device_via_buffer(bkpinfo->media_device, 'w', bkpinfo->internal_tape_block_size)))
|
---|
1299 | {
|
---|
1300 | log_OS_error(g_tape_fifo);
|
---|
1301 | log_to_screen ("Cannot openin stream device");
|
---|
1302 | return(1);
|
---|
1303 | }
|
---|
1304 | }
|
---|
1305 | g_tape_posK = 0;
|
---|
1306 | g_sigpipe = FALSE;
|
---|
1307 | res+=write_header_block_to_stream (0, "start-of-tape", BLK_START_OF_TAPE); /* just in case */
|
---|
1308 | res+=write_header_block_to_stream (0, "start-of-backup", BLK_START_OF_BACKUP); /* just in case */
|
---|
1309 | return (res);
|
---|
1310 | }
|
---|
1311 |
|
---|
1312 |
|
---|
1313 |
|
---|
1314 |
|
---|
1315 | /**
|
---|
1316 | * Write a bufferfull of the most recent archives to the tape. The
|
---|
1317 | * rationale behind this is a bit complex. If the previous tape ended
|
---|
1318 | * suddenly (EOF or otherwise) some archives were probably left in the
|
---|
1319 | * buffer. That means that Mondo thinks they have been written, but
|
---|
1320 | * the external binary @c buffer has not actually written them. So to
|
---|
1321 | * be safe, we start the new tape by writing the last bufferfull from
|
---|
1322 | * the old one. This insures that all archives will be on at least
|
---|
1323 | * one tape. Sounds inelegant, but it works.
|
---|
1324 | * @param bkpinfo The backup information structure. @c bkpinfo->tmpdir is the only field used.
|
---|
1325 | * @return 0 for success, nonzero for failure.
|
---|
1326 | */
|
---|
1327 | int write_backcatalog_to_tape (struct s_bkpinfo *bkpinfo)
|
---|
1328 | {
|
---|
1329 | int i, last, res=0;
|
---|
1330 | char *fname;
|
---|
1331 |
|
---|
1332 | log_msg(2, "I am now writing back catalog to tape");
|
---|
1333 | malloc_string(fname);
|
---|
1334 | last = g_tapecatalog->entries-1;
|
---|
1335 | for(i=0; i<=last; i++)
|
---|
1336 | {
|
---|
1337 | sprintf(fname, "%s/tmpfs/backcatalog/%s", bkpinfo->tmpdir, g_tapecatalog->el[i].fname);
|
---|
1338 | if (!does_file_exist(fname))
|
---|
1339 | { log_msg(6, "Can't write %s - it doesn't exist.", fname); }
|
---|
1340 | else
|
---|
1341 | {
|
---|
1342 | write_header_block_to_stream (length_of_file(fname), "start-backcatalog-afio-or-slice", BLK_START_AN_AFIO_OR_SLICE);
|
---|
1343 | log_msg(2, "Writing %s", fname);
|
---|
1344 | if (write_file_to_stream_from_file(bkpinfo, fname))
|
---|
1345 | { res++; log_msg(2, "%s failed", fname); }
|
---|
1346 | if (i!=last)
|
---|
1347 | { write_header_block_to_stream (0, "stop-backcatalog-afio-or-slice", BLK_STOP_AN_AFIO_OR_SLICE); }
|
---|
1348 | }
|
---|
1349 | }
|
---|
1350 | paranoid_free(fname);
|
---|
1351 | log_msg(2, "Finished writing back catalog to tape");
|
---|
1352 | return(res);
|
---|
1353 | }
|
---|
1354 |
|
---|
1355 |
|
---|
1356 |
|
---|
1357 | /**
|
---|
1358 | * Write all.tar.gz (produced by Mindi) to the first 32M of the first tape.
|
---|
1359 | * @param fname The path to all.tar.gz.
|
---|
1360 | * @return 0 for success, nonzero for failure.
|
---|
1361 | */
|
---|
1362 | int
|
---|
1363 | write_data_disks_to_stream (char *fname)
|
---|
1364 | {
|
---|
1365 | /*@ pointers ****************************************************/
|
---|
1366 | FILE *fin;
|
---|
1367 | char tmp[MAX_STR_LEN];
|
---|
1368 |
|
---|
1369 | /*@ long ********************************************************/
|
---|
1370 | long m = -1;
|
---|
1371 | long templong;
|
---|
1372 |
|
---|
1373 | /*@ int *********************************************************/
|
---|
1374 | int i,j;
|
---|
1375 |
|
---|
1376 | /*@ buffers *****************************************************/
|
---|
1377 | char tempblock[256 * 1024];
|
---|
1378 |
|
---|
1379 | /*@ end vars ****************************************************/
|
---|
1380 |
|
---|
1381 | open_evalcall_form ("Writing data disks to tape");
|
---|
1382 | log_to_screen ("Writing data disks to tape");
|
---|
1383 | log_it ("Data disks = %s", fname);
|
---|
1384 | if (!does_file_exist (fname))
|
---|
1385 | {
|
---|
1386 | sprintf (tmp, "Cannot find %s", fname);
|
---|
1387 | log_to_screen (tmp);
|
---|
1388 | return(1);
|
---|
1389 | }
|
---|
1390 | if (!(fin = fopen (fname, "r")))
|
---|
1391 | {
|
---|
1392 | log_OS_error (fname);
|
---|
1393 | fatal_error ("Cannot openin the data disk");
|
---|
1394 | }
|
---|
1395 | for (i = 0; i < 32; i++) /* 32MB */
|
---|
1396 | {
|
---|
1397 | for (j = 0; j < 4; j++) /* 256K x 4 = 1MB (1024K) */
|
---|
1398 | {
|
---|
1399 | if (!feof (fin))
|
---|
1400 | {
|
---|
1401 | m = (long) fread (tempblock, 1, 256 * 1024, fin);
|
---|
1402 | }
|
---|
1403 | else
|
---|
1404 | {
|
---|
1405 | m = 0;
|
---|
1406 | }
|
---|
1407 | for (; m < 256 * 1024; m++)
|
---|
1408 | {
|
---|
1409 | tempblock[m] = '\0';
|
---|
1410 | }
|
---|
1411 | g_tape_posK +=
|
---|
1412 | fwrite (tempblock, 1, 256 * 1024, g_tape_stream) / 1024;
|
---|
1413 | }
|
---|
1414 | if (i>g_tape_buffer_size_MB) // otherwise, 'buffer' distorts calculations
|
---|
1415 | {
|
---|
1416 | templong = ((i-8) * 4 + j) * 100 / (128-8*4);
|
---|
1417 | update_evalcall_form ((int)(templong));
|
---|
1418 | }
|
---|
1419 | }
|
---|
1420 | paranoid_fclose (fin);
|
---|
1421 | close_evalcall_form ();
|
---|
1422 | return (0);
|
---|
1423 | }
|
---|
1424 |
|
---|
1425 |
|
---|
1426 |
|
---|
1427 |
|
---|
1428 | /**
|
---|
1429 | * Copy @p infile to the opened stream (CD or tape).
|
---|
1430 | * @param bkpinfo The backup information structure. @c bkpinfo->media_size is the only field used.
|
---|
1431 | * @param infile The file to write to the stream.
|
---|
1432 | * @return 0 for success, nonzero for failure.
|
---|
1433 | */
|
---|
1434 | int
|
---|
1435 | write_file_to_stream_from_file (struct s_bkpinfo *bkpinfo, char *infile)
|
---|
1436 | {
|
---|
1437 | /*@ buffers *****************************************************/
|
---|
1438 | char tmp[MAX_STR_LEN];
|
---|
1439 | char datablock[TAPE_BLOCK_SIZE];
|
---|
1440 | char checksum[MAX_STR_LEN];
|
---|
1441 | char *infile_basename;
|
---|
1442 |
|
---|
1443 | /*@ int *********************************************************/
|
---|
1444 | int retval = 0;
|
---|
1445 | int noof_blocks;
|
---|
1446 |
|
---|
1447 | /* unsigned int ch; */
|
---|
1448 | unsigned int crc16;
|
---|
1449 | unsigned int crctt;
|
---|
1450 |
|
---|
1451 | /*@ pointers ****************************************************/
|
---|
1452 | FILE *fin;
|
---|
1453 | char *p;
|
---|
1454 |
|
---|
1455 | /*@ long ********************************************************/
|
---|
1456 | long bytes_to_read = 0;
|
---|
1457 | long i;
|
---|
1458 |
|
---|
1459 | /*@ long long ***************************************************/
|
---|
1460 | long long filesize;
|
---|
1461 |
|
---|
1462 | #ifdef EXTRA_TAPE_CHECKSUMS
|
---|
1463 | int ch;
|
---|
1464 | #endif
|
---|
1465 |
|
---|
1466 | /*@ initialize *************************************************/
|
---|
1467 | crc16 = 0;
|
---|
1468 | crctt = 0;
|
---|
1469 |
|
---|
1470 |
|
---|
1471 |
|
---|
1472 | /*@ end vars ****************************************************/
|
---|
1473 |
|
---|
1474 | infile_basename = strrchr(infile, '/');
|
---|
1475 | if (infile_basename) { infile_basename++; } else { infile_basename=infile; }
|
---|
1476 | filesize = length_of_file (infile);
|
---|
1477 | if (should_we_write_to_next_tape (bkpinfo->media_size[g_current_media_number], filesize))
|
---|
1478 | {
|
---|
1479 | start_to_write_to_next_tape (bkpinfo);
|
---|
1480 | write_backcatalog_to_tape (bkpinfo);
|
---|
1481 | }
|
---|
1482 | p = strrchr (infile, '/');
|
---|
1483 | if (!p)
|
---|
1484 | {
|
---|
1485 | p = infile;
|
---|
1486 | }
|
---|
1487 | else
|
---|
1488 | {
|
---|
1489 | p++;
|
---|
1490 | }
|
---|
1491 | sprintf (tmp, "Writing file '%s' to tape (%ld KB)", p,
|
---|
1492 | (long) filesize >> 10);
|
---|
1493 | log_it (tmp);
|
---|
1494 | write_header_block_to_stream (filesize, infile_basename, BLK_START_FILE);
|
---|
1495 | //go_here_to_restart_saving_of_file:
|
---|
1496 | if (!(fin = fopen (infile, "r"))) { log_OS_error(infile); return(1); }
|
---|
1497 | for (noof_blocks = 0; filesize > 0;
|
---|
1498 | noof_blocks++, filesize -= bytes_to_read)
|
---|
1499 | {
|
---|
1500 | if (filesize < TAPE_BLOCK_SIZE)
|
---|
1501 | {
|
---|
1502 | bytes_to_read = (long) filesize;
|
---|
1503 | for (i = 0; i < TAPE_BLOCK_SIZE; i++)
|
---|
1504 | {
|
---|
1505 | datablock[i] = '\0';
|
---|
1506 | }
|
---|
1507 | }
|
---|
1508 | else
|
---|
1509 | {
|
---|
1510 | bytes_to_read = TAPE_BLOCK_SIZE;
|
---|
1511 | }
|
---|
1512 | (void) fread (datablock, 1, (size_t) bytes_to_read, fin);
|
---|
1513 | g_tape_posK += fwrite (datablock, 1, /*bytes_to_read */ (size_t) TAPE_BLOCK_SIZE,
|
---|
1514 | g_tape_stream) / 1024;
|
---|
1515 | if (g_sigpipe)
|
---|
1516 | {
|
---|
1517 | iamhere("Sigpipe occurred recently. I'll start a new tape.");
|
---|
1518 | fclose(fin);
|
---|
1519 | g_sigpipe = FALSE;
|
---|
1520 | start_to_write_to_next_tape (bkpinfo);
|
---|
1521 | write_backcatalog_to_tape (bkpinfo); // kinda-sorta recursive :)
|
---|
1522 | return(0);
|
---|
1523 | }
|
---|
1524 | #ifdef EXTRA_TAPE_CHECKSUMS
|
---|
1525 | for(i=0;i<bytes_to_read;i++)
|
---|
1526 | {
|
---|
1527 | ch=datablock[i];
|
---|
1528 | crc16=updcrcr(crc16,(unsigned)ch);
|
---|
1529 | crctt=updcrc(crctt,(unsigned)ch);
|
---|
1530 | }
|
---|
1531 | #endif
|
---|
1532 | }
|
---|
1533 | paranoid_fclose (fin);
|
---|
1534 | sprintf (checksum, "%04x%04x", crc16, crctt);
|
---|
1535 | write_header_block_to_stream (g_current_media_number, checksum,
|
---|
1536 | BLK_STOP_FILE);
|
---|
1537 | // log_it("File '%s' written to tape.", infile);
|
---|
1538 | return (retval);
|
---|
1539 | }
|
---|
1540 |
|
---|
1541 |
|
---|
1542 |
|
---|
1543 |
|
---|
1544 |
|
---|
1545 | /**
|
---|
1546 | * Write a header block to the opened stream (CD or tape).
|
---|
1547 | * @param length_of_incoming_file The length to store in the header block.
|
---|
1548 | * Usually matters only if this is a file-related header, in which case it should
|
---|
1549 | * be the length of the file that will follow.
|
---|
1550 | * @param filename The filename to store in the header block. Usually matters
|
---|
1551 | * only if this is a file-related header, in which case this should be the name
|
---|
1552 | * if the file that will follow.
|
---|
1553 | * @param control_char The type of header block this is (start-file, end-file, start-tape, ...)
|
---|
1554 | * @return 0 for success, nonzero for failure.
|
---|
1555 | */
|
---|
1556 | int
|
---|
1557 | write_header_block_to_stream (long long length_of_incoming_file, char *filename,
|
---|
1558 | int control_char)
|
---|
1559 | {
|
---|
1560 | /*@ buffers *****************************************************/
|
---|
1561 | char tempblock[TAPE_BLOCK_SIZE];
|
---|
1562 | char tmp[MAX_STR_LEN];
|
---|
1563 | char *p;
|
---|
1564 |
|
---|
1565 | /*@ int *********************************************************/
|
---|
1566 | int i;
|
---|
1567 |
|
---|
1568 | /*@ long long ***************************************************/
|
---|
1569 | long long olen;
|
---|
1570 |
|
---|
1571 | /*@ end vars ****************************************************/
|
---|
1572 |
|
---|
1573 |
|
---|
1574 | olen = length_of_incoming_file;
|
---|
1575 | p = strrchr (filename, '/'); /* Make 'em go, "Unnnh!" Oh wait, that was _Master_ P... */
|
---|
1576 | if (!p)
|
---|
1577 | {
|
---|
1578 | p = filename;
|
---|
1579 | }
|
---|
1580 | else
|
---|
1581 | {
|
---|
1582 | p++;
|
---|
1583 | }
|
---|
1584 | if (!g_tape_stream)
|
---|
1585 | {
|
---|
1586 | log_to_screen
|
---|
1587 | ("You're not backing up to tape. Why write a tape header?");
|
---|
1588 | return(1);
|
---|
1589 | }
|
---|
1590 | for (i = 0; i < (int) TAPE_BLOCK_SIZE; i++)
|
---|
1591 | {
|
---|
1592 | tempblock[i] = 0;
|
---|
1593 | }
|
---|
1594 | sprintf (tempblock + 6000 + control_char, "Mondolicious, baby");
|
---|
1595 | tempblock[7000] = control_char;
|
---|
1596 | /* for(i=0;i<8;i++) {tempblock[7001+i]=olen&0xff; olen>>=8;} */
|
---|
1597 | memcpy (tempblock + 7001, (char *) &olen, sizeof (long long));
|
---|
1598 | /* if (length_of_incoming_file) {memcpy(tempblock+7001,(char*)&length_of_incoming_file,sizeof(long long));} */
|
---|
1599 | strcpy (tempblock + 1000, filename);
|
---|
1600 | /* strcpy(tempblock+5555,cksum); */
|
---|
1601 | g_tape_posK += fwrite (tempblock, 1, (size_t) TAPE_BLOCK_SIZE, g_tape_stream) / 1024;
|
---|
1602 | sprintf (tmp, "%s (fname=%s, size=%ld K)", marker_to_string (control_char),
|
---|
1603 | p, (long) length_of_incoming_file >> 10);
|
---|
1604 | log_msg(6, tmp);
|
---|
1605 | /* log_tape_pos(); */
|
---|
1606 | return (0);
|
---|
1607 | }
|
---|
1608 |
|
---|
1609 |
|
---|
1610 |
|
---|
1611 |
|
---|
1612 |
|
---|
1613 |
|
---|
1614 |
|
---|
1615 |
|
---|
1616 |
|
---|
1617 |
|
---|
1618 | /**
|
---|
1619 | * Log (to screen) an erroneous marker, along with what it should have been.
|
---|
1620 | * @param should_be What we were expecting.
|
---|
1621 | * @param it_is What we got.
|
---|
1622 | */
|
---|
1623 | void
|
---|
1624 | wrong_marker (int should_be, int it_is)
|
---|
1625 | {
|
---|
1626 | /*@ buffer ******************************************************/
|
---|
1627 | char tmp[MAX_STR_LEN];
|
---|
1628 |
|
---|
1629 |
|
---|
1630 | /*@ end vars ****************************************************/
|
---|
1631 | sprintf (tmp, "Wrong marker! (Should be %s, ",
|
---|
1632 | marker_to_string (should_be));
|
---|
1633 | sprintf (tmp + strlen (tmp), "is actually %s)", marker_to_string (it_is));
|
---|
1634 | log_to_screen (tmp);
|
---|
1635 | }
|
---|
1636 |
|
---|
1637 | /* @} - end of streamGroup */
|
---|