1 | /* libmondo-stream.c
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2 | $Id: libmondo-stream.c 3621 2016-12-20 15:07:32Z bruno $
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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 |
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8 |
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9 | /**
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10 | * @file
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11 | * Functions for writing data to/reading data from streams (tape, CD stream, etc.)
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12 | */
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13 |
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14 | #include "my-stuff.h"
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15 | #include "mr_mem.h"
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16 | #include "mr_file.h"
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17 | #include "mondostructures.h"
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18 | #include "libmondo-devices.h"
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19 | #include "lib-common-externs.h"
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20 | #include "libmondo-stream.h"
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21 | #include "libmondo-string-EXT.h"
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22 | #include "libmondo-files-EXT.h"
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23 | #include "libmondo-gui-EXT.h"
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24 | #include "libmondo-fork-EXT.h"
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25 | #include "libmondo-tools-EXT.h"
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26 | #include "libmondo-fifo-EXT.h"
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27 |
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28 | #define EXTRA_TAPE_CHECKSUMS
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29 | #define STR_HEADER "Mondolicious, baby"
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30 |
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31 | /*@unused@*/
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32 | //static char cvsid[] = "$Id: libmondo-stream.c 3621 2016-12-20 15:07:32Z bruno $";
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33 | extern bool g_sigpipe;
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34 | extern int g_tape_buffer_size_MB;
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35 |
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36 | extern char *g_getfacl;
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37 | extern char *g_getfattr;
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38 | extern char *MONDO_LOGFILE;
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39 |
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40 | /* Reference to global bkpinfo */
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41 | extern struct s_bkpinfo *bkpinfo;
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42 |
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43 | /**
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44 | * @addtogroup globalGroup
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45 | * @{
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46 | */
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47 | /**
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48 | * The file pointer for the opened tape/CD stream.
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49 | * Opened and closed by openin_tape(), openin_cdstream(),
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50 | * openout_tape(), openout_cdstream(), closein_tape(), closein_cdstream(),
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51 | * closeout_tape(), and closeout_cdstream().
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52 | */
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53 | FILE *g_tape_stream = NULL;
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54 |
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55 |
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56 | /**
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57 | * The position (in kilobytes) where we are on the tape.
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58 | */
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59 | long long g_tape_posK = 0;
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60 |
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61 | /**
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62 | * The current media number we're using. This value is 1-based.
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63 | */
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64 | int g_current_media_number = -1;
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65 |
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66 | /**
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67 | * The tape catalog that keeps track of files written to tape.
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68 | */
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69 | struct s_tapecatalog *g_tapecatalog;
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70 |
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71 | /* @} - end of globalGroup */
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72 |
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73 | int write_backcatalog_to_tape();
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74 |
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75 |
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76 |
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77 |
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78 |
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79 | /**
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80 | * @addtogroup streamGroup
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81 | * @{
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82 | */
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83 | /**
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84 | * Close the global output file descriptor which Mondo has used to read
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85 | * from the CD stream.
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86 | * @param bkpinfo The backup information structure. Passed directly to closein_tape().
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87 | * @return 0 for success, nonzero for failure.
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88 | * @note This should be called by restore processes only.
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89 | */
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90 | int closein_cdstream()
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91 | {
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92 | return (closein_tape());
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93 | }
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94 |
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95 |
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96 | /**
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97 | * Close the global output file descriptor which Mondo has used to read
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98 | * from buffer or dd, which read from the tape.
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99 | * @param bkpinfo The backup information structure. Unused.
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100 | * @return 0 for success, nonzero for failure.
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101 | * @note This should be called by restore processes only.
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102 | * @note This function also works for cdstreams for now, but don't count on this behavior.
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103 | * @bug @p bkpinfo parameter is unused.
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104 | */
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105 | int closein_tape()
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106 | {
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107 | /*@ int's ******************************************************* */
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108 | int retval = 0;
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109 | int res = 0;
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110 | int ctrl_chr = '\0';
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111 |
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112 | /*@ buffers ***************************************************** */
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113 | char fname[MAX_STR_LEN];
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114 |
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115 | /*@ long long's ************************************************* */
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116 | long long size;
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117 | char *blk;
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118 | int i;
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119 | int j;
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120 |
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121 | blk = (char *) malloc(256 * 1024);
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122 |
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123 | log_it("closein_tape() -- entering");
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124 | res = read_header_block_from_stream(&size, fname, &ctrl_chr);
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125 | retval += res;
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126 | if (ctrl_chr != BLK_END_OF_BACKUP) {
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127 | wrong_marker(BLK_END_OF_BACKUP, ctrl_chr);
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128 | }
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129 | res = read_header_block_from_stream(&size, fname, &ctrl_chr);
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130 | retval += res;
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131 | if (ctrl_chr != BLK_END_OF_TAPE) {
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132 | wrong_marker(BLK_END_OF_TAPE, ctrl_chr);
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133 | }
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134 | for (i = 0; i < 8 && !feof(g_tape_stream); i++) {
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135 | j = fread(blk, 1, 256 * 1024, g_tape_stream);
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136 | if (j) {
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137 | // FIXME
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138 | }
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139 | }
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140 | sleep(1);
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141 | sync();
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142 | sleep(1);
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143 | paranoid_pclose(g_tape_stream);
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144 | log_it("closein_tape() -- leaving");
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145 | if (!bkpinfo->please_dont_eject) {
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146 | eject_device(bkpinfo->media_device);
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147 | }
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148 | paranoid_free(blk);
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149 | paranoid_free(g_tapecatalog);
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150 | return (retval);
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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 | /**
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156 | * Close the global output file descriptor which Mondo has been using to write
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157 | * to the tape device (via buffer or dd).
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158 | * @param bkpinfo The backup information structure. @c bkpinfo->media_size is the only field used.
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159 | * @return 0 for success, nonzero for failure.
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160 | * @note This should be called by backup processes only.
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161 | */
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162 | int closeout_tape()
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163 | {
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164 | /*@ int's ******************************************************* */
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165 | int retval = 0;
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166 | // int res = 0;
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167 | // int ctrl_chr = '\0';
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168 |
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169 | /*@ buffers ***************************************************** */
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170 | // char fname[MAX_STR_LEN];
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171 |
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172 | /*@ long long's ************************************************* */
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173 | // long long size;
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174 | int i;
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175 | char *blk;
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176 |
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177 | blk = (char *) malloc(256 * 1024);
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178 |
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179 | sleep(1);
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180 | sync();
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181 | sleep(1);
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182 | log_it("closeout_tape() -- entering");
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183 | retval +=
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184 | write_header_block_to_stream((off_t)0, "end-of-backup",
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185 | BLK_END_OF_BACKUP);
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186 | retval += write_header_block_to_stream((off_t)0, "end-of-tape", BLK_END_OF_TAPE); /* just in case */
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187 | /* write 1MB of crap */
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188 | for (i = 0; i < 256 * 1024; i++) {
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189 | blk[i] = (int) (random() & 0xFF);
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190 | }
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191 | for (i = 0; i < 4 * 8; i++) {
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192 | if (fwrite(blk, 1, 256 * 1024, g_tape_stream)) {
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193 | //FIXME
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194 | }
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195 | if (should_we_write_to_next_tape
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196 | (bkpinfo->media_size, (off_t)256 * 1024)) {
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197 | start_to_write_to_next_tape();
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198 | }
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199 | }
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200 | /* write 1MB of zeroes */
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201 | /*
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202 | for (i = 0; i < 256*1024; i++)
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203 | {
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204 | blk[i] = 0;
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205 | }
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206 | for (i = 0; i < 4; i++)
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207 | {
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208 | fwrite (blk, 1, 256*1024, g_tape_stream);
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209 | if (should_we_write_to_next_tape (bkpinfo->media_size, 256*1024))
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210 | {
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211 | start_to_write_to_next_tape ();
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212 | }
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213 | }
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214 | */
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215 | sleep(2);
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216 | paranoid_pclose(g_tape_stream);
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217 | log_it("closeout_tape() -- leaving");
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218 | for (i = 0; i < g_tapecatalog->entries; i++) {
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219 | log_it("i=%d type=%s num=%d aux=%ld posK=%lld", i,
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220 | (g_tapecatalog->el[i].type ==
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221 | fileset) ? "fileset" : "bigslice",
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222 | g_tapecatalog->el[i].number, g_tapecatalog->el[i].aux,
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223 | g_tapecatalog->el[i].tape_posK);
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224 | }
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225 | paranoid_free(blk);
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226 | paranoid_free(g_tapecatalog);
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227 | return (retval);
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228 | }
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229 |
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230 |
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231 |
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232 | bool mt_says_tape_exists(char *dev)
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233 | {
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234 | char *command = NULL;
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235 | int res;
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236 |
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237 | mr_asprintf(command, "mt -f %s status", dev);
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238 | res = run_program_and_log_output(command, 1);
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239 | mr_free(command);
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240 |
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241 | if (res) {
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242 | return (FALSE);
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243 | } else {
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244 | return (TRUE);
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245 | }
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246 | }
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247 |
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248 |
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249 |
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250 | /**
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251 | * Determine the name and size of the tape device. Tries the SCSI tape for
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252 | * this platform, then the IDE tape, then "/dev/st0", then "/dev/osst0".
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253 | * @param dev Where to put the found tape device.
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254 | * @param siz Where to put the tape size (a string like "4GB")
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255 | * @return 0 if success, nonzero if failure (in which @p dev and @p siz are undefined).
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256 | */
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257 | int find_tape_device_and_size(char *dev, char *siz)
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258 | {
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259 | char *tmp = NULL;
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260 | char *command = NULL;
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261 | char *cdr_exe = NULL;
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262 | int res;
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263 |
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264 | log_to_screen("I am looking for your tape streamer. Please wait.");
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265 | dev[0] = siz[0] = '\0';
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266 | if (find_home_of_exe("cdrecord")) {
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267 | mr_asprintf(cdr_exe, "cdrecord");
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268 | } else {
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269 | mr_asprintf(cdr_exe, "dvdrecord");
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270 | }
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271 | mr_asprintf(command, "%s -scanbus 2> /dev/null | grep -i tape | wc -l", cdr_exe);
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272 | tmp = call_program_and_get_last_line_of_output(command);
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273 | mr_free(command);
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274 |
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275 | if (atoi(tmp) != 1) {
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276 | log_it("Either too few or too many tape streamers for me to detect...");
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277 | strcpy(dev, VANILLA_SCSI_TAPE);
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278 | mr_free(tmp);
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279 | mr_free(cdr_exe);
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280 | return 1;
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281 | }
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282 | mr_free(tmp);
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283 |
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284 | mr_asprintf(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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285 | tmp = call_program_and_get_last_line_of_output(command);
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286 | mr_free(command);
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287 |
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288 | if (strlen(tmp) < 2) {
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289 | log_it("Could not find tape device");
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290 | mr_free(cdr_exe);
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291 | mr_free(tmp);
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292 | return 1;
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293 | }
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294 | mr_asprintf(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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295 | mr_free(cdr_exe);
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296 |
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297 | tmp = call_program_and_get_last_line_of_output(command);
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298 | mr_free(command);
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299 |
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300 | strcpy(dev, VANILLA_SCSI_TAPE);
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301 | dev[strlen(dev) - 1] = '\0';
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302 | strcat(dev, tmp); // e.g. '/dev/st0' becomes '/dev/stN'
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303 | mr_free(tmp);
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304 |
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305 | res = 0;
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306 | if (!mt_says_tape_exists(dev)) {
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307 | strcpy(dev, ALT_TAPE);
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308 | if (!mt_says_tape_exists(dev)) {
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309 | log_it("Cannot openin %s", dev);
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310 | strcpy(dev, "/dev/st0");
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311 | if (!mt_says_tape_exists(dev)) {
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312 | log_it("Cannot openin %s", dev);
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313 | strcpy(dev, "/dev/osst0");
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314 | if (!mt_says_tape_exists(dev)) {
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315 | res++;
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316 | } else {
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317 | res = 0;
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318 | }
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319 | }
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320 | }
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321 | }
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322 |
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323 | if (dev) {
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324 | log_it("At this point, dev = %s and res = %d", dev, res);
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325 | } else {
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326 | log_it("At this point, dev is NULL and res = %d", dev, res);
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327 | }
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328 |
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329 | tmp = call_program_and_get_last_line_of_output("cdrecord -scanbus 2> /dev/null | tr -s '\t' ' ' | grep \"[0-9]*,[0-9]*,[0-9]*\" | grep -v \"[0-9]*) \\*\" | grep -i TAPE | awk '{for(i=1; i<NF; i++) { if (index($i, \"GB\")>0) { print $i;};};};'");
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330 |
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331 | if (mt_says_tape_exists(dev)) {
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332 | res = 0;
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333 | } else {
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334 | log_it("Turning %s", dev);
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335 | mr_free(tmp);
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336 | mr_asprintf(tmp, "%s", (strrchr(dev, '/') != NULL) ? strrchr(dev, '/') : dev);
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337 | sprintf(dev, "/dev/os%s", tmp);
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338 | log_it("...into %s", dev);
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339 | if (mt_says_tape_exists(dev)) {
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340 | res = 0;
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341 | } else {
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342 | res++;
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343 | }
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344 | }
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345 |
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346 | siz[0] = '\0';
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347 | log_it("res=%d; dev=%s", res, dev);
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348 |
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349 | if (res) {
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350 | return (res);
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351 | }
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352 |
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353 | if (strlen(tmp) < 2) {
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354 | siz[0] = '\0';
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355 | log_it("Warning - size of tape unknown");
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356 | } else {
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357 | strcpy(siz, tmp);
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358 | }
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359 | mr_free(tmp);
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360 | return (0);
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361 | }
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362 |
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363 |
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364 | int read_EXAT_files_from_tape(long long *ptmp_size, char *tmp_fname,
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365 | int *pctrl_chr, char *xattr_fname,
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366 | char *acl_fname)
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367 | {
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368 | int res = 0;
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369 | char fname_buf[PATH_MAX];
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370 | char *fname = (char *)fname_buf; /* Should NOT be NULL */
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371 | char *tmp = NULL;
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372 |
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373 | // xattr
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374 | if (g_getfattr) {
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375 | res = read_header_block_from_stream(ptmp_size, fname, pctrl_chr);
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376 | if (*pctrl_chr != BLK_START_EXAT_FILE) {
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377 | wrong_marker(BLK_START_EXAT_FILE, *pctrl_chr);
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378 | }
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379 | if (strstr(fname, "xattr") == NULL) {
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380 | mr_asprintf(tmp,"Wrong order expected xattr, got %s, sunshine.", fname);
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381 | fatal_error(tmp);
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382 | }
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383 | read_file_from_stream_to_file(xattr_fname, *ptmp_size);
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384 | res = read_header_block_from_stream(ptmp_size, fname, pctrl_chr);
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385 | if (*pctrl_chr != BLK_STOP_EXAT_FILE) {
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386 | wrong_marker(BLK_STOP_EXAT_FILE, *pctrl_chr);
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387 | }
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388 | log_msg(1, "Got xattr");
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389 | res = read_header_block_from_stream(ptmp_size, fname, pctrl_chr);
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390 | if (*pctrl_chr != BLK_STOP_EXTENDED_ATTRIBUTES) {
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391 | wrong_marker(BLK_STOP_EXTENDED_ATTRIBUTES, *pctrl_chr);
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392 | }
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393 | res = read_header_block_from_stream(ptmp_size, fname, pctrl_chr);
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394 | if (*pctrl_chr == BLK_START_AN_AFIO_OR_SLICE) {
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395 | log_msg(1, "No acl attributes found, skipping to afio files");
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396 | return(0);
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397 | } else {
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398 | if (*pctrl_chr != BLK_START_EXTENDED_ATTRIBUTES) {
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399 | wrong_marker(BLK_START_EXTENDED_ATTRIBUTES, *pctrl_chr);
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400 | }
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401 | }
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402 | }
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403 | // acl
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404 | if (g_getfacl) {
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405 | res = read_header_block_from_stream(ptmp_size, fname, pctrl_chr);
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406 | if (*pctrl_chr != BLK_START_EXAT_FILE) {
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407 | wrong_marker(BLK_START_EXAT_FILE, *pctrl_chr);
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408 | }
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409 | if (strstr(fname, "acl") == NULL) {
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410 | mr_asprintf(tmp,"Wrong order expected acl, got %s, sunshine.", fname);
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411 | fatal_error(tmp);
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412 | }
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413 | read_file_from_stream_to_file(acl_fname, *ptmp_size);
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414 | res = read_header_block_from_stream(ptmp_size, fname, pctrl_chr);
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415 | if (*pctrl_chr != BLK_STOP_EXAT_FILE) {
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416 | wrong_marker(BLK_STOP_EXAT_FILE, *pctrl_chr);
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417 | }
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418 | res = read_header_block_from_stream(ptmp_size, fname, pctrl_chr);
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419 | if (*pctrl_chr != BLK_STOP_EXTENDED_ATTRIBUTES) {
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420 | wrong_marker(BLK_STOP_EXTENDED_ATTRIBUTES, *pctrl_chr);
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421 | }
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422 | log_msg(1, "Got acl");
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423 | }
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424 | // tarball itself
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425 | res = read_header_block_from_stream(ptmp_size, tmp_fname, pctrl_chr);
|
---|
426 | log_msg(1, "End of extended attributes, now looking for afioball");
|
---|
427 | return (res);
|
---|
428 | }
|
---|
429 |
|
---|
430 |
|
---|
431 | int write_EXAT_files_to_tape(char *xattr_fname,
|
---|
432 | char *acl_fname)
|
---|
433 | {
|
---|
434 | int res = 0;
|
---|
435 | if (g_getfattr) {
|
---|
436 | // xattr
|
---|
437 | write_header_block_to_stream(length_of_file(xattr_fname), xattr_fname,
|
---|
438 | BLK_START_EXTENDED_ATTRIBUTES);
|
---|
439 | write_header_block_to_stream(length_of_file(xattr_fname), xattr_fname,
|
---|
440 | BLK_START_EXAT_FILE);
|
---|
441 | write_file_to_stream_from_file(xattr_fname);
|
---|
442 | write_header_block_to_stream((off_t)-1, xattr_fname, BLK_STOP_EXAT_FILE);
|
---|
443 | write_header_block_to_stream(length_of_file(xattr_fname), xattr_fname,
|
---|
444 | BLK_STOP_EXTENDED_ATTRIBUTES);
|
---|
445 | }
|
---|
446 | if (g_getfacl) {
|
---|
447 | // acl
|
---|
448 | write_header_block_to_stream(length_of_file(acl_fname), acl_fname,
|
---|
449 | BLK_START_EXTENDED_ATTRIBUTES);
|
---|
450 | write_header_block_to_stream(length_of_file(acl_fname), acl_fname,
|
---|
451 | BLK_START_EXAT_FILE);
|
---|
452 | write_file_to_stream_from_file(acl_fname);
|
---|
453 | write_header_block_to_stream((off_t)-1, acl_fname, BLK_STOP_EXAT_FILE);
|
---|
454 | write_header_block_to_stream(length_of_file(acl_fname), acl_fname,
|
---|
455 | BLK_STOP_EXTENDED_ATTRIBUTES);
|
---|
456 | }
|
---|
457 | return (res);
|
---|
458 | }
|
---|
459 |
|
---|
460 |
|
---|
461 |
|
---|
462 |
|
---|
463 | /**
|
---|
464 | * Tell the user to insert tape @p tapeno and wait for it to settle (5 seconds).
|
---|
465 | * @param tapeno The tape number to insist on.
|
---|
466 | * @bug There is currently no way to actually verify that the user has actually
|
---|
467 | * inserted the right tape.
|
---|
468 | */
|
---|
469 | void insist_on_this_tape_number(int tapeno)
|
---|
470 | {
|
---|
471 | int i;
|
---|
472 | char *tmp = NULL;
|
---|
473 |
|
---|
474 | log_it("Insisting on tape #%d", tapeno);
|
---|
475 | if (g_current_media_number != tapeno) {
|
---|
476 | mr_asprintf(tmp, "When the tape drive goes quiet, please insert volume %d in this series.", tapeno);
|
---|
477 | popup_and_OK(tmp);
|
---|
478 | mr_free(tmp);
|
---|
479 | open_evalcall_form("Waiting while the tape drive settles");
|
---|
480 | } else {
|
---|
481 | open_evalcall_form("Waiting while the tape drive rewinds");
|
---|
482 | }
|
---|
483 |
|
---|
484 | for (i = 0; i <= 100; i += 2) {
|
---|
485 | usleep(100000);
|
---|
486 | update_evalcall_form(i);
|
---|
487 | }
|
---|
488 | close_evalcall_form();
|
---|
489 | log_it("I assume user has inserted it. They _say_ they have...");
|
---|
490 | g_current_media_number = tapeno;
|
---|
491 |
|
---|
492 | // log_it("g_current_media_number = %d", g_current_media_number);
|
---|
493 | log_it("OK, I've finished insisting. On with the revelry.");
|
---|
494 | }
|
---|
495 |
|
---|
496 |
|
---|
497 |
|
---|
498 |
|
---|
499 | /**
|
---|
500 | * Debugging aid - log the offset we're at on the tape (reading or writing).
|
---|
501 | */
|
---|
502 | void log_tape_pos(void)
|
---|
503 | {
|
---|
504 | /*@ buffers ***************************************************** */
|
---|
505 |
|
---|
506 |
|
---|
507 | /*@ end vars *************************************************** */
|
---|
508 |
|
---|
509 | log_it("Tape position -- %ld KB (%ld MB)", (long) g_tape_posK,
|
---|
510 | (long) g_tape_posK >> 10);
|
---|
511 | }
|
---|
512 |
|
---|
513 |
|
---|
514 |
|
---|
515 |
|
---|
516 | /**
|
---|
517 | * Add a file to a collection of recently archived filesets/slices.
|
---|
518 | * The type is determined by the filename: if it contains ".afio." it is
|
---|
519 | * assumed to be a fileset, otherwise if it contains "slice" it's a slice,
|
---|
520 | * otherwise we generate a fatal_error().
|
---|
521 | * @param td The current @c bkpinfo->tempdir (file will be placed in <tt>td</tt>/tmpfs/backcatalog/).
|
---|
522 | * @param latest_fname The file to place in the collection.
|
---|
523 | * @return 0, always.
|
---|
524 | * @bug Return value is redundant.
|
---|
525 | * @bug The detection won't work for uncompressed afioballs (they end in ".afio", no dot afterwards). // Not true. They end in '.' -Hugo
|
---|
526 | */
|
---|
527 | int maintain_collection_of_recent_archives(char *td, char *latest_fname)
|
---|
528 | {
|
---|
529 | long long final_alleged_writeK, final_projected_certain_writeK,
|
---|
530 | cposK, bufsize_K;
|
---|
531 | int last, curr, i;
|
---|
532 | char *command = NULL;
|
---|
533 | char *tmpdir = NULL;
|
---|
534 | char *old_fname = NULL;
|
---|
535 | char *p;
|
---|
536 | char suffix[16];
|
---|
537 |
|
---|
538 | bufsize_K = (long long) (1024LL * (1 + g_tape_buffer_size_MB));
|
---|
539 | if ((p = strrchr(latest_fname, '.'))) {
|
---|
540 | strcpy(suffix, ++p);
|
---|
541 | } else {
|
---|
542 | suffix[0] = '\0';
|
---|
543 | }
|
---|
544 | mr_asprintf(tmpdir, "%s/tmpfs/backcatalog", td);
|
---|
545 | mkdir(tmpdir, 0x700);
|
---|
546 | mr_asprintf(command, "cp -f %s %s", latest_fname, tmpdir);
|
---|
547 | if (run_program_and_log_output(command, 6)) {
|
---|
548 | log_it("Warning - failed to copy %s to backcatalog at %s",
|
---|
549 | latest_fname, tmpdir);
|
---|
550 | }
|
---|
551 | mr_free(command);
|
---|
552 |
|
---|
553 | last = g_tapecatalog->entries - 1;
|
---|
554 | if (last <= 0) {
|
---|
555 | log_it("Too early to start deleting from collection.");
|
---|
556 | mr_free(tmpdir);
|
---|
557 | return (0);
|
---|
558 | }
|
---|
559 | final_alleged_writeK = g_tapecatalog->el[last].tape_posK;
|
---|
560 | final_projected_certain_writeK = final_alleged_writeK - bufsize_K;
|
---|
561 | for (curr = last; curr >= 0; curr--) {
|
---|
562 | cposK = g_tapecatalog->el[curr].tape_posK;
|
---|
563 | if (cposK < final_projected_certain_writeK) {
|
---|
564 | break;
|
---|
565 | }
|
---|
566 | }
|
---|
567 | if (curr < 0) {
|
---|
568 | log_it("Not far enough into tape to start deleting old archives from collection.");
|
---|
569 | mr_free(tmpdir);
|
---|
570 | return (0);
|
---|
571 | }
|
---|
572 |
|
---|
573 | for (i = curr - 1; i >= 0 && curr - i < 10; i--) {
|
---|
574 | mr_asprintf(old_fname, "%s/%s", tmpdir, g_tapecatalog->el[i].fname);
|
---|
575 | unlink(old_fname);
|
---|
576 | mr_free(old_fname);
|
---|
577 | }
|
---|
578 | mr_free(tmpdir);
|
---|
579 | return (0);
|
---|
580 | }
|
---|
581 |
|
---|
582 |
|
---|
583 |
|
---|
584 |
|
---|
585 | /**
|
---|
586 | * Open the CD stream for input.
|
---|
587 | * @param bkpinfo The backup information structure. Passed to openin_tape().
|
---|
588 | * @return 0 for success, nonzero for failure.
|
---|
589 | * @note Equivalent to openin_tape() for now, but don't count on this behavior.
|
---|
590 | */
|
---|
591 | int openin_cdstream()
|
---|
592 | {
|
---|
593 | return (openin_tape());
|
---|
594 | }
|
---|
595 |
|
---|
596 | /**
|
---|
597 | * FIFO used to read/write to the tape device.
|
---|
598 | * @bug This seems obsolete now that we call an external @c buffer program. Please look onto this.
|
---|
599 | */
|
---|
600 | char g_tape_fifo[MAX_STR_LEN];
|
---|
601 |
|
---|
602 |
|
---|
603 |
|
---|
604 | int set_tape_block_size_with_mt(long internal_tape_block_size)
|
---|
605 | {
|
---|
606 | char *tmp = NULL;
|
---|
607 | int res;
|
---|
608 |
|
---|
609 | if (bkpinfo->media_device == NULL) {
|
---|
610 | return(1);
|
---|
611 | }
|
---|
612 |
|
---|
613 | if (strncmp(bkpinfo->media_device, "/dev/", 5)) {
|
---|
614 | log_msg(1, "Not using 'mt setblk'. This isn't an actual /dev entry.");
|
---|
615 | return (0);
|
---|
616 | }
|
---|
617 | mr_asprintf(tmp, "mt -f %s setblk %ld", bkpinfo->media_device, internal_tape_block_size);
|
---|
618 | res = run_program_and_log_output(tmp, 3);
|
---|
619 | mr_free(tmp);
|
---|
620 | return (res);
|
---|
621 | }
|
---|
622 |
|
---|
623 | /**
|
---|
624 | * Return the non-rewinding device when passed the normal one
|
---|
625 | * @param tapedev The tape device to open for writing.
|
---|
626 | * @note the caller needs to free the string returned
|
---|
627 | */
|
---|
628 | char *get_non_rewind_dev(char *tapedev)
|
---|
629 | {
|
---|
630 |
|
---|
631 | char *ntapedev = NULL;
|
---|
632 | char *p = NULL;
|
---|
633 | char *q = NULL;
|
---|
634 | char *r = NULL;
|
---|
635 |
|
---|
636 | ntapedev = (char *)mr_malloc(strlen(tapedev)+2*sizeof(char));
|
---|
637 | p = strrchr(tapedev,'/');
|
---|
638 | if (p == NULL) {
|
---|
639 | log_it("Didn't find a '/' in %s",tapedev);
|
---|
640 | return(NULL);
|
---|
641 | }
|
---|
642 |
|
---|
643 | /* Copy tapedev content up to the last / */
|
---|
644 | q = tapedev;
|
---|
645 | r = ntapedev;
|
---|
646 | while (q != p) {
|
---|
647 | *r = *q;
|
---|
648 | r++;
|
---|
649 | q++;
|
---|
650 | }
|
---|
651 | /* Copy the '/' */
|
---|
652 | *r = *q;
|
---|
653 | r++;
|
---|
654 | q++;
|
---|
655 | /* Adds a 'n' - non-rewinding */
|
---|
656 | *r = 'n';
|
---|
657 | r++;
|
---|
658 | /* Copy the rest of tapedev */
|
---|
659 | while (*q != '\0') {
|
---|
660 | *r = *q;
|
---|
661 | r++;
|
---|
662 | q++;
|
---|
663 | }
|
---|
664 | *r = '\0';
|
---|
665 | if (mt_says_tape_exists(ntapedev)) {
|
---|
666 | log_it("Non-rewinding tape device is %s",ntapedev);
|
---|
667 | } else {
|
---|
668 | log_it("Unable to find non-rewinding tape device.");
|
---|
669 | ntapedev = NULL;
|
---|
670 | }
|
---|
671 | return(ntapedev);
|
---|
672 | }
|
---|
673 |
|
---|
674 |
|
---|
675 |
|
---|
676 | /**
|
---|
677 | * Handle OBDR if we were asked to do so
|
---|
678 | * @param tapedev The tape device to open for reading.
|
---|
679 | */
|
---|
680 | int skip_obdr(void)
|
---|
681 | {
|
---|
682 | char *command = NULL;
|
---|
683 | int res = 0;
|
---|
684 |
|
---|
685 | if (bkpinfo->media_device == NULL) {
|
---|
686 | return(1);
|
---|
687 | }
|
---|
688 |
|
---|
689 | log_it("Skipping OBDR headers");
|
---|
690 | mr_asprintf(command, "mt -f %s rewind",bkpinfo->media_device);
|
---|
691 | res = run_program_and_log_output(command, 1);
|
---|
692 | paranoid_free(command);
|
---|
693 |
|
---|
694 | mr_asprintf(command, "mt -f %s fsf 2",bkpinfo->media_device);
|
---|
695 | res = run_program_and_log_output(command, 1);
|
---|
696 | paranoid_free(command);
|
---|
697 |
|
---|
698 | set_tape_block_size_with_mt(bkpinfo->internal_tape_block_size);
|
---|
699 | return(res);
|
---|
700 | }
|
---|
701 |
|
---|
702 | /**
|
---|
703 | * Handle OBDR if we were asked to do so
|
---|
704 | * @param tapedev The tape device to open for writing.
|
---|
705 | * @return 0 for success, nonzero for failure.
|
---|
706 | * @note This should be called ONLY from backup processes. It will OVERWRITE ANY
|
---|
707 | * EXISTING DATA on the tape!
|
---|
708 | */
|
---|
709 | int create_obdr(void)
|
---|
710 | {
|
---|
711 |
|
---|
712 | char *command = NULL;
|
---|
713 | int res = 0;
|
---|
714 |
|
---|
715 | if (bkpinfo->media_device == NULL) {
|
---|
716 | return(1);
|
---|
717 | }
|
---|
718 |
|
---|
719 | log_it("Creating OBDR headers");
|
---|
720 | /* OBDR: First block 10 kB of zero bs = 512 */
|
---|
721 | mr_asprintf(command, "mt -f %s compression off",bkpinfo->media_device);
|
---|
722 | res = run_program_and_log_output(command, 1);
|
---|
723 | paranoid_free(command);
|
---|
724 |
|
---|
725 | mr_asprintf(command, "mt -f %s rewind",bkpinfo->media_device);
|
---|
726 | res += run_program_and_log_output(command, 1);
|
---|
727 | paranoid_free(command);
|
---|
728 |
|
---|
729 | set_tape_block_size_with_mt(512);
|
---|
730 |
|
---|
731 | mr_asprintf(command, "dd if=/dev/zero of=%s bs=512 count=20",bkpinfo->media_device);
|
---|
732 | res += run_program_and_log_output(command, 1);
|
---|
733 | paranoid_free(command);
|
---|
734 |
|
---|
735 | /* OBDR: then ISO boot image bs = 2048 */
|
---|
736 | set_tape_block_size_with_mt(2048);
|
---|
737 |
|
---|
738 | mr_asprintf(command, "dd if=%s of=%s bs=2048",MINDI_CACHE"/mindi.iso",bkpinfo->media_device);
|
---|
739 | res += run_program_and_log_output(command, 1);
|
---|
740 | paranoid_free(command);
|
---|
741 |
|
---|
742 | set_tape_block_size_with_mt(bkpinfo->internal_tape_block_size);
|
---|
743 |
|
---|
744 | /* restore compression mode on */
|
---|
745 | mr_asprintf(command, "mt -f %s compression on",bkpinfo->media_device);
|
---|
746 | res = run_program_and_log_output(command, 1);
|
---|
747 | paranoid_free(command);
|
---|
748 |
|
---|
749 | return(res);
|
---|
750 | }
|
---|
751 |
|
---|
752 |
|
---|
753 | /**
|
---|
754 | * Open the tape device for input.
|
---|
755 | * @param bkpinfo The backup information structure. Fields used:
|
---|
756 | * - @c bkpinfo->media_device
|
---|
757 | * - @c bkpinfo->tmpdir
|
---|
758 | * @return 0 for success, nonzero for failure.
|
---|
759 | * @note This will also work with a cdstream for now, but don't count on this behavior.
|
---|
760 | */
|
---|
761 | int openin_tape()
|
---|
762 | {
|
---|
763 | /*@ buffer ***************************************************** */
|
---|
764 | char fname[MAX_STR_LEN];
|
---|
765 | char *datablock;
|
---|
766 | char *tmp = NULL;
|
---|
767 | char *old_pwd = NULL;
|
---|
768 | char *outfname = NULL;
|
---|
769 | /*@ int ******************************************************* */
|
---|
770 | int i;
|
---|
771 | int j;
|
---|
772 | int res = 0;
|
---|
773 | long length, templong;
|
---|
774 | size_t k;
|
---|
775 | int retval = 0;
|
---|
776 | int ctrl_chr;
|
---|
777 |
|
---|
778 | /*@ long long ************************************************* */
|
---|
779 | long long size;
|
---|
780 |
|
---|
781 | /*@ pointers ************************************************** */
|
---|
782 | FILE *fout;
|
---|
783 |
|
---|
784 | /*@ end vars *************************************************** */
|
---|
785 |
|
---|
786 | g_tapecatalog = mr_malloc(sizeof(struct s_tapecatalog));
|
---|
787 | g_tapecatalog->entries = 0;
|
---|
788 | g_tape_posK = 0;
|
---|
789 | if (g_tape_stream) {
|
---|
790 | log_it("FYI - I won't 'openin' the tape. It's already open.");
|
---|
791 | return (0);
|
---|
792 | }
|
---|
793 |
|
---|
794 | // mondoarchive should have configured everything to give the right non-rew device
|
---|
795 | if ((bkpinfo->use_obdr) && (bkpinfo->media_device != NULL)) {
|
---|
796 | res = skip_obdr();
|
---|
797 | if (res != 0) {
|
---|
798 | log_it("Not able to skip OBDR - Restore will have to be done manually");
|
---|
799 | }
|
---|
800 | } else {
|
---|
801 | if (bkpinfo->media_device == NULL) {
|
---|
802 | log_it("Not able to skip OBDR - Restore will have to be done manually");
|
---|
803 | return (1);
|
---|
804 | }
|
---|
805 | set_tape_block_size_with_mt(bkpinfo->internal_tape_block_size);
|
---|
806 | }
|
---|
807 |
|
---|
808 | insist_on_this_tape_number(1);
|
---|
809 | mr_asprintf(outfname, "%s/tmp/all.tar.gz", bkpinfo->tmpdir);
|
---|
810 | make_hole_for_file(outfname);
|
---|
811 |
|
---|
812 | log_it("Opening IN tape");
|
---|
813 | if (!(g_tape_stream = open_device_via_buffer(bkpinfo->media_device, 'r', bkpinfo->internal_tape_block_size))) {
|
---|
814 | log_OS_error(g_tape_fifo);
|
---|
815 | log_to_screen("Cannot openin stream device");
|
---|
816 | mr_free(outfname);
|
---|
817 | return (1);
|
---|
818 | }
|
---|
819 | log_to_screen("Reading stream");
|
---|
820 | log_it("stream device = '%s'", bkpinfo->media_device);
|
---|
821 | /* skip data disks */
|
---|
822 | open_evalcall_form("Skipping data disks on stream");
|
---|
823 | log_to_screen("Skipping data disks on stream");
|
---|
824 | if (!(fout = fopen(outfname, "w"))) {
|
---|
825 | log_OS_error(outfname);
|
---|
826 | log_to_screen("Cannot openout datadisk all.tar.gz file");
|
---|
827 | mr_free(outfname);
|
---|
828 | return (-1);
|
---|
829 | }
|
---|
830 | if (!(datablock = (char *) malloc(256 * 1024))) {
|
---|
831 | log_to_screen("Unable to malloc 256*1024");
|
---|
832 | mr_free(outfname);
|
---|
833 | finish(1);
|
---|
834 | }
|
---|
835 | for (i = 0; i < 32; i++) {
|
---|
836 | for (j = 0; j < 4; j++) {
|
---|
837 | for (length = 0, k = 0; length < 256 * 1024; length += k) {
|
---|
838 | k = fread(datablock + length, 1, 256 * 1024 - length,
|
---|
839 | g_tape_stream);
|
---|
840 | }
|
---|
841 | if (fwrite(datablock, 1, (size_t) length, fout)) {
|
---|
842 | // FIXME
|
---|
843 | }
|
---|
844 | g_tape_posK += length / 1024;
|
---|
845 | }
|
---|
846 | if (i > 8) // otherwise, 'buffer' distorts calculations
|
---|
847 | {
|
---|
848 | templong = ((i - 8) * 4 + j) * 100 / (128 - 8 * 4);
|
---|
849 | update_evalcall_form((int) (templong));
|
---|
850 | }
|
---|
851 | }
|
---|
852 | paranoid_fclose(fout);
|
---|
853 | paranoid_free(datablock);
|
---|
854 |
|
---|
855 | /* find initial blocks */
|
---|
856 | res = read_header_block_from_stream(&size, fname, &ctrl_chr);
|
---|
857 | retval += res;
|
---|
858 | if (ctrl_chr != BLK_START_OF_TAPE) {
|
---|
859 | wrong_marker(BLK_START_OF_TAPE, ctrl_chr);
|
---|
860 | }
|
---|
861 | res = read_header_block_from_stream(&size, fname, &ctrl_chr);
|
---|
862 | retval += res;
|
---|
863 | if (ctrl_chr != BLK_START_OF_BACKUP) {
|
---|
864 | wrong_marker(BLK_START_OF_BACKUP, ctrl_chr);
|
---|
865 | }
|
---|
866 | close_evalcall_form();
|
---|
867 | log_it("Saved all.tar.gz to '%s'", outfname);
|
---|
868 | old_pwd = mr_getcwd();
|
---|
869 | if (chdir(bkpinfo->tmpdir)) {
|
---|
870 | // FIXME
|
---|
871 | }
|
---|
872 | mr_asprintf(tmp, "tar -zxf %s ./tmp/mondorestore.cfg 2> /dev/null", outfname);
|
---|
873 | paranoid_system(tmp);
|
---|
874 | mr_free(tmp);
|
---|
875 |
|
---|
876 | paranoid_system("cp -f tmp/mondorestore.cfg . 2> /dev/null");
|
---|
877 | if (chdir(old_pwd)) {
|
---|
878 | // FIXME
|
---|
879 | }
|
---|
880 | mr_free(old_pwd);
|
---|
881 | unlink(outfname);
|
---|
882 | mr_free(outfname);
|
---|
883 | return (retval);
|
---|
884 | }
|
---|
885 |
|
---|
886 |
|
---|
887 | /**
|
---|
888 | * Start writing to a CD stream.
|
---|
889 | * @param cddev The CD device to openout via cdrecord.
|
---|
890 | * @param speed The speed to write at.
|
---|
891 | * @return 0 for success, nonzero for failure.
|
---|
892 | * @note This should be called only from backup processes.
|
---|
893 | */
|
---|
894 | int openout_cdstream(char *cddev, int speed)
|
---|
895 | {
|
---|
896 | /*@ buffers ***************************************************** */
|
---|
897 | char *command = NULL;
|
---|
898 |
|
---|
899 | /*@ end vars *************************************************** */
|
---|
900 |
|
---|
901 | if (cddev == NULL) {
|
---|
902 | log_to_screen("Failed to openout NULL cddev");
|
---|
903 | return (1);
|
---|
904 | }
|
---|
905 | /* add 'dummy' if testing */
|
---|
906 | mr_asprintf(command, "cdrecord -eject dev=%s speed=%d fs=24m -waiti - >> %s 2>> %s", cddev, speed, MONDO_LOGFILE, MONDO_LOGFILE);
|
---|
907 | /* initialise the catalog */
|
---|
908 | g_current_media_number = 1;
|
---|
909 | if (!(g_tapecatalog = malloc(sizeof(struct s_tapecatalog)))) {
|
---|
910 | fatal_error("Cannot alloc mem for tape catalog");
|
---|
911 | }
|
---|
912 | g_tapecatalog->entries = 0;
|
---|
913 | /* log stuff */
|
---|
914 | log_it("Opening OUT cdstream with the command");
|
---|
915 | log_it(command);
|
---|
916 | /* log_it("Let's see what happens, shall we?"); */
|
---|
917 | g_tape_stream = popen(command, "w");
|
---|
918 | mr_free(command);
|
---|
919 |
|
---|
920 | if (g_tape_stream) {
|
---|
921 | return (0);
|
---|
922 | } else {
|
---|
923 | log_to_screen("Failed to openout to cdstream (fifo)");
|
---|
924 | return (1);
|
---|
925 | }
|
---|
926 | }
|
---|
927 |
|
---|
928 |
|
---|
929 | /**
|
---|
930 | * Start writing to a tape device for the backup.
|
---|
931 | * Handle OBDR if we were asked to do so
|
---|
932 | * @param tapedev The tape device to open for writing.
|
---|
933 | * @return 0 for success, nonzero for failure.
|
---|
934 | * @note This should be called ONLY from backup processes. It will OVERWRITE ANY
|
---|
935 | * EXISTING DATA on the tape!
|
---|
936 | */
|
---|
937 | int openout_tape() {
|
---|
938 |
|
---|
939 | g_current_media_number = 1;
|
---|
940 | if (g_tape_stream) {
|
---|
941 | log_it("FYI - I won't 'openout' the tape. It's already open.");
|
---|
942 | return (0);
|
---|
943 | }
|
---|
944 | if (bkpinfo->media_device == NULL) {
|
---|
945 | log_it("Unable to openout NULL device");
|
---|
946 | return(1);
|
---|
947 | }
|
---|
948 | g_tapecatalog = mr_malloc(sizeof(struct s_tapecatalog));
|
---|
949 | g_tapecatalog->entries = 0;
|
---|
950 | g_tape_posK = 0;
|
---|
951 |
|
---|
952 | if (bkpinfo->use_obdr) {
|
---|
953 | create_obdr();
|
---|
954 | } else {
|
---|
955 | set_tape_block_size_with_mt(bkpinfo->internal_tape_block_size);
|
---|
956 | }
|
---|
957 | log_it("Opening OUT tape");
|
---|
958 | if (!(g_tape_stream = open_device_via_buffer(bkpinfo->media_device, 'w', bkpinfo->internal_tape_block_size))) {
|
---|
959 | log_OS_error(g_tape_fifo);
|
---|
960 | log_to_screen("Cannot openin stream device");
|
---|
961 | return (1);
|
---|
962 | }
|
---|
963 | return (0);
|
---|
964 | }
|
---|
965 |
|
---|
966 |
|
---|
967 |
|
---|
968 |
|
---|
969 | /**
|
---|
970 | * Copy a file from the opened stream (CD or tape) to @p outfile.
|
---|
971 | * @param outfile The file to write to.
|
---|
972 | * @param size The size of the file in the input stream.
|
---|
973 | * @return 0 for success, nonzero for failure.
|
---|
974 | */
|
---|
975 | int
|
---|
976 | read_file_from_stream_to_file(char *outfile, long long size)
|
---|
977 | {
|
---|
978 |
|
---|
979 | /*@ int ******************************************************** */
|
---|
980 | int res;
|
---|
981 |
|
---|
982 | /*@ end vars *************************************************** */
|
---|
983 |
|
---|
984 | res = read_file_from_stream_FULL(outfile, NULL, size);
|
---|
985 |
|
---|
986 | return (res);
|
---|
987 | }
|
---|
988 |
|
---|
989 |
|
---|
990 |
|
---|
991 | /**
|
---|
992 | * Copy a file from the currently opened stream (CD or tape) to the stream indicated
|
---|
993 | * by @p fout.
|
---|
994 | * @param bkpinfo The backup information structure. @c bkpinfo->media_size is the only field used.
|
---|
995 | * @param fout The stream to write the file to.
|
---|
996 | * @param size The size of the file in bytes.
|
---|
997 | * @return 0 for success, nonzero for failure.
|
---|
998 | */
|
---|
999 | int
|
---|
1000 | read_file_from_stream_to_stream(FILE * fout, long long size)
|
---|
1001 | {
|
---|
1002 |
|
---|
1003 | /*@ int ******************************************************** */
|
---|
1004 | int res;
|
---|
1005 |
|
---|
1006 | /*@ end vars *************************************************** */
|
---|
1007 |
|
---|
1008 | res = read_file_from_stream_FULL(NULL, fout, size);
|
---|
1009 | /* fflush(g_tape_stream);
|
---|
1010 | fflush(fout);*/
|
---|
1011 | return (res);
|
---|
1012 | }
|
---|
1013 |
|
---|
1014 |
|
---|
1015 |
|
---|
1016 | /**
|
---|
1017 | * Copy a file from the currently opened stream (CD or tape) to either a
|
---|
1018 | * @c FILE pointer indicating a currently-opened file, or a filename indicating
|
---|
1019 | * a new file to create. This is the backbone function that read_file_from_stream_to_file()
|
---|
1020 | * and read_file_from_stream_to_stream() are wrappers for.
|
---|
1021 | * @param bkpinfo The backup information structure. @c bkpinfo->media_size is the only field used.
|
---|
1022 | * @param outfname If non-NULL, write to this file.
|
---|
1023 | * @param foutstream If non-NULL, write to this stream.
|
---|
1024 | * @param orig_size The original length of the file in bytes.
|
---|
1025 | * @return 0 for success, nonzero for failure.
|
---|
1026 | * @note Only @b one of @p outfname or @p foutstream may be non-NULL.
|
---|
1027 | */
|
---|
1028 | int
|
---|
1029 | read_file_from_stream_FULL(char *outfname, FILE * foutstream, long long orig_size)
|
---|
1030 | {
|
---|
1031 | /*@ buffers ***************************************************** */
|
---|
1032 | char *datablock;
|
---|
1033 | char *temp_fname;
|
---|
1034 | char *temp_cksum;
|
---|
1035 | char *actual_cksum = NULL;
|
---|
1036 |
|
---|
1037 | /*@ int ********************************************************* */
|
---|
1038 | int retval = 0;
|
---|
1039 | #ifdef EXTRA_TAPE_CHECKSUMS
|
---|
1040 | int i, ch;
|
---|
1041 | #endif
|
---|
1042 | int noof_blocks;
|
---|
1043 | int ctrl_chr;
|
---|
1044 | int res;
|
---|
1045 | /*@ pointers **************************************************** */
|
---|
1046 | FILE *fout;
|
---|
1047 |
|
---|
1048 | /*@ long ***************************************************** */
|
---|
1049 | long bytes_to_write = 0L /*,i */ ;
|
---|
1050 | // long bytes_successfully_read_in_this_time = 0;
|
---|
1051 |
|
---|
1052 | /*@ long long *************************************************** */
|
---|
1053 | long long temp_size, size;
|
---|
1054 | long bytes_read, bytes_to_read;
|
---|
1055 | long long total_read_from_tape_for_this_file = 0;
|
---|
1056 | long long where_I_was_before_tape_change = 0;
|
---|
1057 | /*@ unsigned int ************************************************ */
|
---|
1058 | /* unsigned int ch; */
|
---|
1059 | unsigned int crc16;
|
---|
1060 | unsigned int crctt;
|
---|
1061 |
|
---|
1062 | /*@ init ******************************************************* */
|
---|
1063 | malloc_string(temp_fname);
|
---|
1064 | malloc_string(temp_cksum);
|
---|
1065 | datablock = malloc(TAPE_BLOCK_SIZE);
|
---|
1066 | crc16 = 0;
|
---|
1067 | crctt = 0;
|
---|
1068 | size = orig_size;
|
---|
1069 |
|
---|
1070 | /*@ end vars *************************************************** */
|
---|
1071 |
|
---|
1072 | res = read_header_block_from_stream(&temp_size, temp_fname, &ctrl_chr);
|
---|
1073 | if (res) {
|
---|
1074 | // FIXME
|
---|
1075 | }
|
---|
1076 | if (orig_size != temp_size && orig_size != -1) {
|
---|
1077 | log_to_screen("output file's size should be %ld K but is apparently %ld K", (long) size >> 10, (long) temp_size >> 10);
|
---|
1078 | }
|
---|
1079 | if (ctrl_chr != BLK_START_FILE) {
|
---|
1080 | wrong_marker(BLK_START_FILE, ctrl_chr);
|
---|
1081 | return (1);
|
---|
1082 | }
|
---|
1083 |
|
---|
1084 | if (foutstream) {
|
---|
1085 | fout = foutstream;
|
---|
1086 | } else {
|
---|
1087 | fout = fopen(outfname, "w");
|
---|
1088 | }
|
---|
1089 | if (!fout) {
|
---|
1090 | log_OS_error(outfname);
|
---|
1091 | log_to_screen("Cannot openout file");
|
---|
1092 | return (1);
|
---|
1093 | }
|
---|
1094 | total_read_from_tape_for_this_file = 0;
|
---|
1095 | for (noof_blocks = 0; size > 0;
|
---|
1096 | noof_blocks++, size -=
|
---|
1097 | bytes_to_write, total_read_from_tape_for_this_file +=
|
---|
1098 | bytes_read) {
|
---|
1099 | bytes_to_write =
|
---|
1100 | (size < TAPE_BLOCK_SIZE) ? (long) size : TAPE_BLOCK_SIZE;
|
---|
1101 | bytes_to_read = TAPE_BLOCK_SIZE;
|
---|
1102 | bytes_read = fread(datablock, 1, bytes_to_read, g_tape_stream);
|
---|
1103 | while (bytes_read < bytes_to_read) { // next tape!
|
---|
1104 | // crctt=crc16=0;
|
---|
1105 | where_I_was_before_tape_change = size;
|
---|
1106 | log_msg(4, "where_I_was_... = %lld",
|
---|
1107 | where_I_was_before_tape_change);
|
---|
1108 | start_to_read_from_next_tape();
|
---|
1109 | log_msg(4, "Started reading from next tape.");
|
---|
1110 | skip_incoming_files_until_we_find_this_one(temp_fname);
|
---|
1111 | log_msg(4, "Skipped irrelevant files OK.");
|
---|
1112 | for (size = orig_size; size > where_I_was_before_tape_change;
|
---|
1113 | size -= bytes_to_write) {
|
---|
1114 | bytes_read = fread(datablock, 1, bytes_to_read, g_tape_stream);
|
---|
1115 | }
|
---|
1116 | log_msg(4, "'size' is now %lld (should be %lld)", size,
|
---|
1117 | where_I_was_before_tape_change);
|
---|
1118 | log_to_screen("Successfully re-sync'd tape");
|
---|
1119 | bytes_read = fread(datablock, 1, bytes_to_read, g_tape_stream);
|
---|
1120 | }
|
---|
1121 |
|
---|
1122 | if (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
|
---|
1123 | // FIXME
|
---|
1124 | }
|
---|
1125 |
|
---|
1126 | #ifdef EXTRA_TAPE_CHECKSUMS
|
---|
1127 | for (i = 0; i < (int) bytes_to_write; i++) {
|
---|
1128 | ch = datablock[i];
|
---|
1129 | crc16 = updcrcr(crc16, (unsigned) ch);
|
---|
1130 | crctt = updcrc(crctt, (unsigned) ch);
|
---|
1131 | }
|
---|
1132 | #endif
|
---|
1133 | }
|
---|
1134 | log_msg(6, "Total read from tape for this file = %lld",
|
---|
1135 | total_read_from_tape_for_this_file);
|
---|
1136 | log_msg(6, ".......................... Should be %lld", orig_size);
|
---|
1137 | g_tape_posK += total_read_from_tape_for_this_file / 1024;
|
---|
1138 | mr_asprintf(actual_cksum, "%04x%04x", crc16, crctt);
|
---|
1139 | if (foutstream) { /*log_it("Finished writing to foutstream"); */
|
---|
1140 | } else {
|
---|
1141 | paranoid_fclose(fout);
|
---|
1142 | }
|
---|
1143 | res = read_header_block_from_stream(&temp_size, temp_cksum, &ctrl_chr);
|
---|
1144 | if (ctrl_chr != BLK_STOP_FILE) {
|
---|
1145 | wrong_marker(BLK_STOP_FILE, ctrl_chr);
|
---|
1146 | }
|
---|
1147 | if (strcmp(temp_cksum, actual_cksum)) {
|
---|
1148 | log_to_screen("actual cksum=%s; recorded cksum=%s", actual_cksum, temp_cksum);
|
---|
1149 | log_to_screen("%s (%ld K) is corrupt on tape", temp_fname, (long) orig_size >> 10);
|
---|
1150 | retval++;
|
---|
1151 | }
|
---|
1152 | mr_free(actual_cksum);
|
---|
1153 |
|
---|
1154 | paranoid_free(datablock);
|
---|
1155 | paranoid_free(temp_fname);
|
---|
1156 | paranoid_free(temp_cksum);
|
---|
1157 | return (retval);
|
---|
1158 | }
|
---|
1159 |
|
---|
1160 |
|
---|
1161 |
|
---|
1162 | /**
|
---|
1163 | * Read a header block from the currently opened stream (CD or tape).
|
---|
1164 | * This block indicates the length of the following file (if it's file-related)
|
---|
1165 | * the filename (if it's file-related), and the block type.
|
---|
1166 | * @param plen Where to put the length of the file. Valid only for file-related header blocks.
|
---|
1167 | * @param filename Where to put the name of the file. Valid only for file-related header blocks.
|
---|
1168 | * @param pcontrol_char Where to put the type of block (e.g. start-file, end-file, start-tape, ...)
|
---|
1169 | * @return 0 for success, nonzero for failure.
|
---|
1170 | * @note If you read a marker (@p pcontrol_char) you're not expecting, you can call wrong_marker().
|
---|
1171 | */
|
---|
1172 | int
|
---|
1173 | read_header_block_from_stream(long long *plen, char *filename,
|
---|
1174 | int *pcontrol_char)
|
---|
1175 | {
|
---|
1176 |
|
---|
1177 | /*@ buffers ***************************************************** */
|
---|
1178 | char *tempblock;
|
---|
1179 | char *tmp = NULL;
|
---|
1180 |
|
---|
1181 | /*@ int ********************************************************* */
|
---|
1182 | int i, retval;
|
---|
1183 |
|
---|
1184 | /*@ end vars *************************************************** */
|
---|
1185 |
|
---|
1186 | tempblock = (char *) malloc((size_t) TAPE_BLOCK_SIZE);
|
---|
1187 |
|
---|
1188 | for (i = 0; i < (int) TAPE_BLOCK_SIZE; i++) {
|
---|
1189 | tempblock[i] = 0;
|
---|
1190 | }
|
---|
1191 | while (!(*pcontrol_char = tempblock[7000])) {
|
---|
1192 | g_tape_posK += fread(tempblock, 1, (size_t) TAPE_BLOCK_SIZE, g_tape_stream) / 1024;
|
---|
1193 | }
|
---|
1194 | memcpy((char *) plen, tempblock + 7001, sizeof(long long));
|
---|
1195 | if (strcmp(tempblock + 6000 + *pcontrol_char, STR_HEADER)) {
|
---|
1196 | log_it("Bad header block at %ld K", (long) g_tape_posK);
|
---|
1197 | }
|
---|
1198 | strcpy(filename, tempblock + 1000);
|
---|
1199 | if (*pcontrol_char == BLK_ABORTED_BACKUP) {
|
---|
1200 | log_to_screen("I can't verify an aborted backup.");
|
---|
1201 | retval = 1;
|
---|
1202 | } else {
|
---|
1203 | retval = 0;
|
---|
1204 | }
|
---|
1205 | for (i = 1000; i < 1020; i++) {
|
---|
1206 | if (tempblock[i] < 32 || tempblock[i] > 126) {
|
---|
1207 | tempblock[i] = ' ';
|
---|
1208 | }
|
---|
1209 | }
|
---|
1210 | tempblock[i] = '\0';
|
---|
1211 | tmp = marker_to_string(*pcontrol_char);
|
---|
1212 | log_msg(6, "%s (fname=%s, size=%ld K)", tmp, tempblock + 1000, (long) (*plen) >> 10);
|
---|
1213 | mr_free(tmp);
|
---|
1214 | paranoid_free(tempblock);
|
---|
1215 | return (retval);
|
---|
1216 | }
|
---|
1217 |
|
---|
1218 |
|
---|
1219 |
|
---|
1220 | /**
|
---|
1221 | * Add specified file/slice to the internal catalog of all archives written.
|
---|
1222 | * This lets us restart on a new CD/tape/whatever if it runs out of room. We just
|
---|
1223 | * write the last [buffer size] MB from the catalog to the new tape, so we know
|
---|
1224 | * we have @e all archives on some CD/tape/whatever.
|
---|
1225 | * @param type The type of file we're cataloging (afioball, slice, something else)
|
---|
1226 | * @param number The fileset number or biggiefile number.
|
---|
1227 | * @param aux The slice number if it's a biggiefile, or any other additional info.
|
---|
1228 | * @param fn The original full pathname of the file we're recording.
|
---|
1229 | * @return The index of the record we just added.
|
---|
1230 | */
|
---|
1231 | int register_in_tape_catalog(t_archtype type, int number, long aux,
|
---|
1232 | char *fn)
|
---|
1233 | {
|
---|
1234 | int last;
|
---|
1235 | char fname[MAX_TAPECAT_FNAME_LEN+1];
|
---|
1236 | char *p;
|
---|
1237 |
|
---|
1238 | p = strrchr(fn, '/');
|
---|
1239 | if (p) {
|
---|
1240 | p++;
|
---|
1241 | } else {
|
---|
1242 | p = fn;
|
---|
1243 | }
|
---|
1244 | strncpy(fname, p, MAX_TAPECAT_FNAME_LEN);
|
---|
1245 | fname[MAX_TAPECAT_FNAME_LEN] = '\0';
|
---|
1246 | last = g_tapecatalog->entries;
|
---|
1247 | if (last >= MAX_TAPECATALOG_ENTRIES) {
|
---|
1248 | log_it
|
---|
1249 | ("Warning - can't log #%d in tape catalog - too many entries already",
|
---|
1250 | number);
|
---|
1251 | return (-1);
|
---|
1252 | }
|
---|
1253 | g_tapecatalog->el[last].type = type;
|
---|
1254 | g_tapecatalog->el[last].number = number;
|
---|
1255 | g_tapecatalog->el[last].aux = aux;
|
---|
1256 | g_tapecatalog->el[last].tape_posK = g_tape_posK;
|
---|
1257 | strcpy(g_tapecatalog->el[last].fname, fname);
|
---|
1258 | g_tapecatalog->entries++;
|
---|
1259 | return (last); // returns the index of the record we've jsut added
|
---|
1260 | }
|
---|
1261 |
|
---|
1262 |
|
---|
1263 |
|
---|
1264 |
|
---|
1265 | /**
|
---|
1266 | * Decide whether we should start a new tape. This is TRUE if we've run out of tape
|
---|
1267 | * (got SIGPIPE) or look like we will.
|
---|
1268 | * @param mediasize The size of the tape in megabytes.
|
---|
1269 | * @param length_of_incoming_file The length of the file we're about to write, in bytes.
|
---|
1270 | * @bug This seems like it'll only work for media_size != autodetect, but Mondo only allows
|
---|
1271 | * autodetecting the size. Huh?
|
---|
1272 | */
|
---|
1273 |
|
---|
1274 | /* TODO: Should be reviewed for mediasize being a off_t ??? */
|
---|
1275 | bool
|
---|
1276 | should_we_write_to_next_tape(long mediasize,
|
---|
1277 | off_t length_of_incoming_file)
|
---|
1278 | {
|
---|
1279 | /*@ bool's ***************************************************** */
|
---|
1280 | bool we_need_a_new_tape = FALSE;
|
---|
1281 |
|
---|
1282 | /*@ end vars *************************************************** */
|
---|
1283 |
|
---|
1284 | if (mediasize == 0) {
|
---|
1285 | return (FALSE);
|
---|
1286 | }
|
---|
1287 | if (mediasize > 0 && (g_tape_posK >> 10 >= mediasize)) {
|
---|
1288 | log_it("mediasize = %ld", mediasize);
|
---|
1289 | we_need_a_new_tape = TRUE;
|
---|
1290 | log_to_screen("Should have started a new tape/CD already");
|
---|
1291 | }
|
---|
1292 | if ((g_tape_posK + length_of_incoming_file / 1024) >> 10 >=
|
---|
1293 | mediasize - (SLICE_SIZE * 4 / 1024)) {
|
---|
1294 | log_it("g_tape_posK = %ld\nmediasize = %ld\n", g_tape_posK,
|
---|
1295 | mediasize);
|
---|
1296 | we_need_a_new_tape = TRUE;
|
---|
1297 | }
|
---|
1298 | return (we_need_a_new_tape);
|
---|
1299 | }
|
---|
1300 |
|
---|
1301 |
|
---|
1302 | /**
|
---|
1303 | * Seek through the stream until we find a header block where the NAME field matches
|
---|
1304 | * @p the_file_I_was_reading. This is useful if you've just started reading from
|
---|
1305 | * a new tape and want to find the file you were reading when the tape ended.
|
---|
1306 | * @param the_file_I_was_reading File name to look for.
|
---|
1307 | * @return 0 for success, nonzero for failure.
|
---|
1308 | */
|
---|
1309 | int skip_incoming_files_until_we_find_this_one(char
|
---|
1310 | *the_file_I_was_reading)
|
---|
1311 | {
|
---|
1312 | char *pA;
|
---|
1313 | char *pB;
|
---|
1314 | int res;
|
---|
1315 | int ctrl_chr;
|
---|
1316 | char *temp_fname;
|
---|
1317 | char *datablock;
|
---|
1318 | long long temp_size, size;
|
---|
1319 | long bytes_to_write;
|
---|
1320 |
|
---|
1321 | datablock = malloc(TAPE_BLOCK_SIZE);
|
---|
1322 | malloc_string(temp_fname);
|
---|
1323 | pB = strrchr(the_file_I_was_reading, '/');
|
---|
1324 | if (pB) {
|
---|
1325 | pB++;
|
---|
1326 | } else {
|
---|
1327 | pB = the_file_I_was_reading;
|
---|
1328 | }
|
---|
1329 | log_msg(1, "skip_incoming_..(%s)", pB);
|
---|
1330 | log_msg(2, "Looking for initial START_AN_AFIO_OR_SLICE");
|
---|
1331 | ctrl_chr = -1;
|
---|
1332 | while (ctrl_chr != BLK_START_AN_AFIO_OR_SLICE) {
|
---|
1333 | res = read_header_block_from_stream(&temp_size, temp_fname, &ctrl_chr);
|
---|
1334 | if (res) {
|
---|
1335 | // FIXME
|
---|
1336 | }
|
---|
1337 | if (ctrl_chr == BLK_START_AN_AFIO_OR_SLICE) {
|
---|
1338 | break;
|
---|
1339 | }
|
---|
1340 | log_msg(1, "%lld %s %c", temp_size, temp_fname, ctrl_chr);
|
---|
1341 | wrong_marker(BLK_START_AN_AFIO_OR_SLICE, ctrl_chr);
|
---|
1342 | log_msg(3, "Still trying to re-sync w/ tape");
|
---|
1343 | }
|
---|
1344 | while (ctrl_chr != BLK_START_FILE) {
|
---|
1345 | res = read_header_block_from_stream(&temp_size, temp_fname, &ctrl_chr);
|
---|
1346 | if (res) {
|
---|
1347 | //FIXME
|
---|
1348 | }
|
---|
1349 | if (ctrl_chr == BLK_START_FILE) {
|
---|
1350 | break;
|
---|
1351 | }
|
---|
1352 | log_msg(1, "%lld %s %c", temp_size, temp_fname, ctrl_chr);
|
---|
1353 | wrong_marker(BLK_START_FILE, ctrl_chr);
|
---|
1354 | log_msg(3, "Still trying to re-sync w/ tape");
|
---|
1355 | }
|
---|
1356 | pA = strrchr(temp_fname, '/');
|
---|
1357 | if (pA) {
|
---|
1358 | pA++;
|
---|
1359 | } else {
|
---|
1360 | pA = temp_fname;
|
---|
1361 | }
|
---|
1362 | pB = strrchr(the_file_I_was_reading, '/');
|
---|
1363 | if (pB) {
|
---|
1364 | pB++;
|
---|
1365 | } else {
|
---|
1366 | pB = the_file_I_was_reading;
|
---|
1367 | }
|
---|
1368 | while (strcmp(pA, pB)) {
|
---|
1369 | log_msg(6, "Skipping %s (it's not %s)", temp_fname, the_file_I_was_reading);
|
---|
1370 | for (size = temp_size; size > 0; size -= bytes_to_write) {
|
---|
1371 | bytes_to_write =
|
---|
1372 | (size < TAPE_BLOCK_SIZE) ? (long) size : TAPE_BLOCK_SIZE;
|
---|
1373 | if (fread(datablock, 1, (size_t) TAPE_BLOCK_SIZE, g_tape_stream)) {
|
---|
1374 | // FIXME - needs error-checking and -catching
|
---|
1375 | }
|
---|
1376 | }
|
---|
1377 | res = read_header_block_from_stream(&temp_size, temp_fname, &ctrl_chr);
|
---|
1378 | if (ctrl_chr != BLK_STOP_FILE) {
|
---|
1379 | wrong_marker(BLK_STOP_FILE, ctrl_chr);
|
---|
1380 | }
|
---|
1381 | res = read_header_block_from_stream(&temp_size, temp_fname, &ctrl_chr);
|
---|
1382 | if (ctrl_chr != BLK_STOP_AN_AFIO_OR_SLICE) {
|
---|
1383 | wrong_marker(BLK_STOP_AN_AFIO_OR_SLICE, ctrl_chr);
|
---|
1384 | }
|
---|
1385 | res = read_header_block_from_stream(&temp_size, temp_fname, &ctrl_chr);
|
---|
1386 | if (ctrl_chr != BLK_START_AN_AFIO_OR_SLICE) {
|
---|
1387 | wrong_marker(BLK_START_AN_AFIO_OR_SLICE, ctrl_chr);
|
---|
1388 | }
|
---|
1389 | res = read_header_block_from_stream(&temp_size, temp_fname, &ctrl_chr);
|
---|
1390 | if (ctrl_chr != BLK_START_FILE) {
|
---|
1391 | wrong_marker(BLK_START_FILE, ctrl_chr);
|
---|
1392 | }
|
---|
1393 | pA = strrchr(temp_fname, '/');
|
---|
1394 | if (pA) {
|
---|
1395 | pA++;
|
---|
1396 | } else {
|
---|
1397 | pA = temp_fname;
|
---|
1398 | }
|
---|
1399 | pB = strrchr(the_file_I_was_reading, '/');
|
---|
1400 | if (pB) {
|
---|
1401 | pB++;
|
---|
1402 | } else {
|
---|
1403 | pB = the_file_I_was_reading;
|
---|
1404 | }
|
---|
1405 | }
|
---|
1406 | log_msg(2, "Reading %s (it matches %s)", temp_fname, the_file_I_was_reading);
|
---|
1407 | paranoid_free(temp_fname);
|
---|
1408 | paranoid_free(datablock);
|
---|
1409 | return (0);
|
---|
1410 | }
|
---|
1411 |
|
---|
1412 |
|
---|
1413 | /**
|
---|
1414 | * Start to read from the next tape. Assumes the user has already inserted it.
|
---|
1415 | * @param bkpinfo The backup information structure. @c bkpinfo->media_device is the only field used.
|
---|
1416 | * @return 0 for success, nonzero for failure.
|
---|
1417 | */
|
---|
1418 | int start_to_read_from_next_tape()
|
---|
1419 | {
|
---|
1420 | /*@ int ********************************************************* */
|
---|
1421 | int res = 0;
|
---|
1422 | char *sz_msg;
|
---|
1423 | int ctrlchr;
|
---|
1424 | long long temp_size;
|
---|
1425 | malloc_string(sz_msg);
|
---|
1426 | /*@ end vars *************************************************** */
|
---|
1427 |
|
---|
1428 | if (bkpinfo->media_device == NULL) {
|
---|
1429 | log_it("Unable to open in from NULL device");
|
---|
1430 | return (1);
|
---|
1431 | }
|
---|
1432 |
|
---|
1433 | paranoid_pclose(g_tape_stream);
|
---|
1434 | sync();
|
---|
1435 | sync();
|
---|
1436 | sync();
|
---|
1437 | log_it("Next tape requested.");
|
---|
1438 | insist_on_this_tape_number(g_current_media_number + 1); // will increment it, too
|
---|
1439 | log_it("Opening IN the next tape");
|
---|
1440 | if (!(g_tape_stream = open_device_via_buffer(bkpinfo->media_device, 'r', bkpinfo->internal_tape_block_size))) {
|
---|
1441 | log_OS_error(g_tape_fifo);
|
---|
1442 | log_to_screen("Cannot openin stream device");
|
---|
1443 | return (1);
|
---|
1444 | }
|
---|
1445 | g_tape_posK = 0;
|
---|
1446 | g_sigpipe = FALSE;
|
---|
1447 | res += read_header_block_from_stream(&temp_size, sz_msg, &ctrlchr); /* just in case */
|
---|
1448 | if (ctrlchr != BLK_START_OF_TAPE) {
|
---|
1449 | wrong_marker(BLK_START_OF_TAPE, ctrlchr);
|
---|
1450 | }
|
---|
1451 | res += read_header_block_from_stream(&temp_size, sz_msg, &ctrlchr); /* just in case */
|
---|
1452 | if (ctrlchr != BLK_START_OF_BACKUP) {
|
---|
1453 | wrong_marker(BLK_START_OF_BACKUP, ctrlchr);
|
---|
1454 | } else {
|
---|
1455 | log_msg(3, "Next tape opened OK. Whoopee!");
|
---|
1456 | }
|
---|
1457 | paranoid_free(sz_msg);
|
---|
1458 | return (res);
|
---|
1459 | }
|
---|
1460 |
|
---|
1461 |
|
---|
1462 |
|
---|
1463 | /**
|
---|
1464 | * Start to write to the next tape. Assume the user has already inserted it.
|
---|
1465 | * @param bkpinfo The backup information structure. @c bkpinfo->media_device is the only field used.
|
---|
1466 | * @return 0 for success, nonzero for failure.
|
---|
1467 | */
|
---|
1468 | int start_to_write_to_next_tape()
|
---|
1469 | {
|
---|
1470 | int res = 0;
|
---|
1471 | char *command = NULL;
|
---|
1472 |
|
---|
1473 | if (bkpinfo->media_device == NULL) {
|
---|
1474 | log_it("Unable to open out from NULL device");
|
---|
1475 | return (1);
|
---|
1476 | }
|
---|
1477 |
|
---|
1478 | paranoid_pclose(g_tape_stream);
|
---|
1479 | sync();
|
---|
1480 | sync();
|
---|
1481 | sync();
|
---|
1482 | log_it("New tape requested.");
|
---|
1483 | insist_on_this_tape_number(g_current_media_number + 1); // will increment g_current_media, too
|
---|
1484 | if (bkpinfo->backup_media_type == cdstream) {
|
---|
1485 | mr_asprintf(command, "cdrecord -eject dev=%s speed=%d fs=24m -waiti - >> %s 2>> %s", bkpinfo->media_device, bkpinfo->cdrw_speed, MONDO_LOGFILE, MONDO_LOGFILE);
|
---|
1486 | log_it("Opening OUT to next CD with the command");
|
---|
1487 | log_it(command);
|
---|
1488 | log_it("Let's see what happens, shall we?");
|
---|
1489 | g_tape_stream = popen(command, "w");
|
---|
1490 | mr_free(command);
|
---|
1491 |
|
---|
1492 | if (!g_tape_stream) {
|
---|
1493 | log_to_screen("Failed to openout to cdstream (fifo)");
|
---|
1494 | return (1);
|
---|
1495 | }
|
---|
1496 | } else {
|
---|
1497 | log_it("Opening OUT to next tape");
|
---|
1498 | if (!(g_tape_stream = open_device_via_buffer(bkpinfo->media_device, 'w', bkpinfo->internal_tape_block_size))) {
|
---|
1499 | log_OS_error(g_tape_fifo);
|
---|
1500 | log_to_screen("Cannot openin stream device");
|
---|
1501 | return (1);
|
---|
1502 | }
|
---|
1503 | }
|
---|
1504 | g_tape_posK = 0;
|
---|
1505 | g_sigpipe = FALSE;
|
---|
1506 | res += write_header_block_to_stream((off_t)0, "start-of-tape", BLK_START_OF_TAPE); /* just in case */
|
---|
1507 | res += write_header_block_to_stream((off_t)0, "start-of-backup", BLK_START_OF_BACKUP); /* just in case */
|
---|
1508 | return (res);
|
---|
1509 | }
|
---|
1510 |
|
---|
1511 |
|
---|
1512 |
|
---|
1513 |
|
---|
1514 | /**
|
---|
1515 | * Write a bufferfull of the most recent archives to the tape. The
|
---|
1516 | * rationale behind this is a bit complex. If the previous tape ended
|
---|
1517 | * suddenly (EOF or otherwise) some archives were probably left in the
|
---|
1518 | * buffer. That means that Mondo thinks they have been written, but
|
---|
1519 | * the external binary @c buffer has not actually written them. So to
|
---|
1520 | * be safe, we start the new tape by writing the last bufferfull from
|
---|
1521 | * the old one. This insures that all archives will be on at least
|
---|
1522 | * one tape. Sounds inelegant, but it works.
|
---|
1523 | * @param bkpinfo The backup information structure. @c bkpinfo->tmpdir is the only field used.
|
---|
1524 | * @return 0 for success, nonzero for failure.
|
---|
1525 | */
|
---|
1526 | int write_backcatalog_to_tape()
|
---|
1527 | {
|
---|
1528 | int i, last, res = 0;
|
---|
1529 | char *fname = NULL;
|
---|
1530 |
|
---|
1531 | log_msg(2, "I am now writing back catalog to tape");
|
---|
1532 | last = g_tapecatalog->entries - 1;
|
---|
1533 | for (i = 0; i <= last; i++) {
|
---|
1534 | mr_asprintf(fname, "%s/tmpfs/backcatalog/%s", bkpinfo->tmpdir, g_tapecatalog->el[i].fname);
|
---|
1535 | if (!does_file_exist(fname)) {
|
---|
1536 | log_msg(6, "Can't write %s - it doesn't exist.", fname);
|
---|
1537 | } else {
|
---|
1538 | write_header_block_to_stream(length_of_file(fname),
|
---|
1539 | "start-backcatalog-afio-or-slice",
|
---|
1540 | BLK_START_AN_AFIO_OR_SLICE);
|
---|
1541 | log_msg(2, "Writing %s", fname);
|
---|
1542 | if (write_file_to_stream_from_file(fname)) {
|
---|
1543 | res++;
|
---|
1544 | log_msg(2, "%s failed", fname);
|
---|
1545 | }
|
---|
1546 | if (i != last) {
|
---|
1547 | write_header_block_to_stream((off_t)0,
|
---|
1548 | "stop-backcatalog-afio-or-slice",
|
---|
1549 | BLK_STOP_AN_AFIO_OR_SLICE);
|
---|
1550 | }
|
---|
1551 | }
|
---|
1552 | mr_free(fname);
|
---|
1553 | }
|
---|
1554 | log_msg(2, "Finished writing back catalog to tape");
|
---|
1555 | return (res);
|
---|
1556 | }
|
---|
1557 |
|
---|
1558 |
|
---|
1559 |
|
---|
1560 | /**
|
---|
1561 | * Write all.tar.gz (produced by Mindi) to the first 32M of the first tape.
|
---|
1562 | * @param fname The path to all.tar.gz.
|
---|
1563 | * @return 0 for success, nonzero for failure.
|
---|
1564 | */
|
---|
1565 | int write_data_disks_to_stream(char *fname)
|
---|
1566 | {
|
---|
1567 | /*@ pointers *************************************************** */
|
---|
1568 | FILE *fin;
|
---|
1569 |
|
---|
1570 | /*@ long ******************************************************* */
|
---|
1571 | long m = -1;
|
---|
1572 | long templong;
|
---|
1573 |
|
---|
1574 | /*@ int ******************************************************** */
|
---|
1575 | int i, j;
|
---|
1576 |
|
---|
1577 | /*@ buffers **************************************************** */
|
---|
1578 | char tempblock[256 * 1024];
|
---|
1579 |
|
---|
1580 | /*@ end vars *************************************************** */
|
---|
1581 |
|
---|
1582 | open_evalcall_form("Writing data disks to tape");
|
---|
1583 | log_to_screen("Writing data disks to tape");
|
---|
1584 | log_it("Data disks = %s", fname);
|
---|
1585 | if (!does_file_exist(fname)) {
|
---|
1586 | log_to_screen("Cannot find %s", fname);
|
---|
1587 | return (1);
|
---|
1588 | }
|
---|
1589 | if (!(fin = fopen(fname, "r"))) {
|
---|
1590 | log_OS_error(fname);
|
---|
1591 | fatal_error("Cannot openin the data disk");
|
---|
1592 | }
|
---|
1593 | for (i = 0; i < 32; i++) { /* 32MB */
|
---|
1594 | for (j = 0; j < 4; j++) { /* 256K x 4 = 1MB (1024K) */
|
---|
1595 | if (!feof(fin)) {
|
---|
1596 | m = (long) fread(tempblock, 1, 256 * 1024, fin);
|
---|
1597 | } else {
|
---|
1598 | m = 0;
|
---|
1599 | }
|
---|
1600 | for (; m < 256 * 1024; m++) {
|
---|
1601 | tempblock[m] = '\0';
|
---|
1602 | }
|
---|
1603 | g_tape_posK +=
|
---|
1604 | fwrite(tempblock, 1, 256 * 1024, g_tape_stream) / 1024;
|
---|
1605 | }
|
---|
1606 | if (i > g_tape_buffer_size_MB) // otherwise, 'buffer' distorts calculations
|
---|
1607 | {
|
---|
1608 | templong = ((i - 8) * 4 + j) * 100 / (128 - 8 * 4);
|
---|
1609 | update_evalcall_form((int) (templong));
|
---|
1610 | }
|
---|
1611 | }
|
---|
1612 | paranoid_fclose(fin);
|
---|
1613 | close_evalcall_form();
|
---|
1614 | return (0);
|
---|
1615 | }
|
---|
1616 |
|
---|
1617 |
|
---|
1618 |
|
---|
1619 |
|
---|
1620 | /**
|
---|
1621 | * Copy @p infile to the opened stream (CD or tape).
|
---|
1622 | * @param bkpinfo The backup information structure. @c bkpinfo->media_size is the only field used.
|
---|
1623 | * @param infile The file to write to the stream.
|
---|
1624 | * @return 0 for success, nonzero for failure.
|
---|
1625 | */
|
---|
1626 | int write_file_to_stream_from_file(char *infile)
|
---|
1627 | {
|
---|
1628 | /*@ buffers **************************************************** */
|
---|
1629 | char datablock[TAPE_BLOCK_SIZE];
|
---|
1630 | char *checksum = NULL;
|
---|
1631 | char *infile_basename;
|
---|
1632 |
|
---|
1633 | /*@ int ******************************************************** */
|
---|
1634 | int retval = 0;
|
---|
1635 | int noof_blocks;
|
---|
1636 |
|
---|
1637 | /* unsigned int ch; */
|
---|
1638 | unsigned int crc16;
|
---|
1639 | unsigned int crctt;
|
---|
1640 |
|
---|
1641 | /*@ pointers *************************************************** */
|
---|
1642 | FILE *fin;
|
---|
1643 | char *p;
|
---|
1644 |
|
---|
1645 | /*@ long ******************************************************* */
|
---|
1646 | long bytes_to_read = 0;
|
---|
1647 | long i;
|
---|
1648 |
|
---|
1649 | off_t filesize;
|
---|
1650 |
|
---|
1651 | #ifdef EXTRA_TAPE_CHECKSUMS
|
---|
1652 | int ch;
|
---|
1653 | #endif
|
---|
1654 |
|
---|
1655 | /*@ initialize ************************************************ */
|
---|
1656 | crc16 = 0;
|
---|
1657 | crctt = 0;
|
---|
1658 |
|
---|
1659 |
|
---|
1660 |
|
---|
1661 | /*@ end vars *************************************************** */
|
---|
1662 |
|
---|
1663 | infile_basename = strrchr(infile, '/');
|
---|
1664 | if (infile_basename) {
|
---|
1665 | infile_basename++;
|
---|
1666 | } else {
|
---|
1667 | infile_basename = infile;
|
---|
1668 | }
|
---|
1669 | filesize = length_of_file(infile);
|
---|
1670 | if (should_we_write_to_next_tape
|
---|
1671 | (bkpinfo->media_size, filesize)) {
|
---|
1672 | start_to_write_to_next_tape();
|
---|
1673 | write_backcatalog_to_tape();
|
---|
1674 | }
|
---|
1675 | p = strrchr(infile, '/');
|
---|
1676 | if (!p) {
|
---|
1677 | p = infile;
|
---|
1678 | } else {
|
---|
1679 | p++;
|
---|
1680 | }
|
---|
1681 | log_it("Writing file '%s' to tape (%ld KB)", p, (long) filesize >> 10);
|
---|
1682 | write_header_block_to_stream(filesize, infile_basename,
|
---|
1683 | BLK_START_FILE);
|
---|
1684 | //go_here_to_restart_saving_of_file:
|
---|
1685 | if (!(fin = fopen(infile, "r"))) {
|
---|
1686 | log_OS_error(infile);
|
---|
1687 | return (1);
|
---|
1688 | }
|
---|
1689 | for (noof_blocks = 0; filesize > 0;
|
---|
1690 | noof_blocks++, filesize -= bytes_to_read) {
|
---|
1691 | if (filesize < TAPE_BLOCK_SIZE) {
|
---|
1692 | bytes_to_read = (long) filesize;
|
---|
1693 | for (i = 0; i < TAPE_BLOCK_SIZE; i++) {
|
---|
1694 | datablock[i] = '\0';
|
---|
1695 | }
|
---|
1696 | } else {
|
---|
1697 | bytes_to_read = TAPE_BLOCK_SIZE;
|
---|
1698 | }
|
---|
1699 | if (fread(datablock, 1, (size_t) bytes_to_read, fin)) {
|
---|
1700 | // FIXME
|
---|
1701 | }
|
---|
1702 | g_tape_posK +=
|
---|
1703 | fwrite(datablock, 1, /*bytes_to_read */
|
---|
1704 | (size_t) TAPE_BLOCK_SIZE,
|
---|
1705 | g_tape_stream) / 1024;
|
---|
1706 | if (g_sigpipe) {
|
---|
1707 | log_it("Sigpipe occurred recently. I'll start a new tape.");
|
---|
1708 | fclose(fin);
|
---|
1709 | g_sigpipe = FALSE;
|
---|
1710 | start_to_write_to_next_tape();
|
---|
1711 | write_backcatalog_to_tape(); // kinda-sorta recursive :)
|
---|
1712 | return (0);
|
---|
1713 | }
|
---|
1714 | #ifdef EXTRA_TAPE_CHECKSUMS
|
---|
1715 | for (i = 0; i < bytes_to_read; i++) {
|
---|
1716 | ch = datablock[i];
|
---|
1717 | crc16 = updcrcr(crc16, (unsigned) ch);
|
---|
1718 | crctt = updcrc(crctt, (unsigned) ch);
|
---|
1719 | }
|
---|
1720 | #endif
|
---|
1721 | }
|
---|
1722 | paranoid_fclose(fin);
|
---|
1723 | mr_asprintf(checksum, "%04x%04x", crc16, crctt);
|
---|
1724 | /* TODO: what does it do ??? */
|
---|
1725 | write_header_block_to_stream((off_t)g_current_media_number, checksum, BLK_STOP_FILE);
|
---|
1726 | mr_free(checksum);
|
---|
1727 |
|
---|
1728 | // log_it("File '%s' written to tape.", infile);
|
---|
1729 | return (retval);
|
---|
1730 | }
|
---|
1731 |
|
---|
1732 |
|
---|
1733 |
|
---|
1734 |
|
---|
1735 |
|
---|
1736 | /**
|
---|
1737 | * Write a header block to the opened stream (CD or tape).
|
---|
1738 | * @param length_of_incoming_file The length to store in the header block.
|
---|
1739 | * Usually matters only if this is a file-related header, in which case it should
|
---|
1740 | * be the length of the file that will follow.
|
---|
1741 | * @param filename The filename to store in the header block. Usually matters
|
---|
1742 | * only if this is a file-related header, in which case this should be the name
|
---|
1743 | * if the file that will follow.
|
---|
1744 | * @param control_char The type of header block this is (start-file, end-file, start-tape, ...)
|
---|
1745 | * @return 0 for success, nonzero for failure.
|
---|
1746 | */
|
---|
1747 | int
|
---|
1748 | write_header_block_to_stream(off_t length_of_incoming_file,
|
---|
1749 | char *filename, int control_char)
|
---|
1750 | {
|
---|
1751 | /*@ buffers **************************************************** */
|
---|
1752 | char tempblock[TAPE_BLOCK_SIZE];
|
---|
1753 | char *p;
|
---|
1754 | char *tmp = NULL;
|
---|
1755 |
|
---|
1756 | /*@ int ******************************************************** */
|
---|
1757 | int i;
|
---|
1758 |
|
---|
1759 | off_t olen;
|
---|
1760 |
|
---|
1761 | /*@ end vars *************************************************** */
|
---|
1762 |
|
---|
1763 | if (length_of_incoming_file <= 0) {
|
---|
1764 | return(1);
|
---|
1765 | }
|
---|
1766 |
|
---|
1767 | olen = length_of_incoming_file;
|
---|
1768 | p = strrchr(filename, '/'); /* Make 'em go, "Unnnh!" Oh wait, that was _Master_ P... */
|
---|
1769 | if (!p) {
|
---|
1770 | p = filename;
|
---|
1771 | } else {
|
---|
1772 | p++;
|
---|
1773 | }
|
---|
1774 | if (!g_tape_stream) {
|
---|
1775 | log_to_screen("You're not backing up to tape. Why write a tape header?");
|
---|
1776 | return (1);
|
---|
1777 | }
|
---|
1778 | for (i = 0; i < (int) TAPE_BLOCK_SIZE; i++) {
|
---|
1779 | tempblock[i] = 0;
|
---|
1780 | }
|
---|
1781 | sprintf(tempblock + 6000 + control_char, STR_HEADER);
|
---|
1782 | tempblock[7000] = control_char;
|
---|
1783 | memcpy(tempblock + 7001, (char *) &olen, sizeof(off_t));
|
---|
1784 | strcpy(tempblock + 1000, filename);
|
---|
1785 | g_tape_posK += fwrite(tempblock, 1, (size_t) TAPE_BLOCK_SIZE, g_tape_stream) / 1024;
|
---|
1786 | tmp = marker_to_string(control_char);
|
---|
1787 | log_msg(6, "%s (fname=%s, size=%ld K)", tmp, p, (long) length_of_incoming_file >> 10);
|
---|
1788 | mr_free(tmp);
|
---|
1789 | return (0);
|
---|
1790 | }
|
---|
1791 |
|
---|
1792 |
|
---|
1793 |
|
---|
1794 |
|
---|
1795 |
|
---|
1796 |
|
---|
1797 |
|
---|
1798 |
|
---|
1799 |
|
---|
1800 |
|
---|
1801 | /**
|
---|
1802 | * Log (to screen) an erroneous marker, along with what it should have been.
|
---|
1803 | * @param should_be What we were expecting.
|
---|
1804 | * @param it_is What we got.
|
---|
1805 | */
|
---|
1806 | void wrong_marker(int should_be, int it_is)
|
---|
1807 | {
|
---|
1808 | char *tmp1 = NULL;
|
---|
1809 | char *tmp2 = NULL;
|
---|
1810 | tmp1 = marker_to_string(should_be);
|
---|
1811 | tmp2 = marker_to_string(it_is);
|
---|
1812 | log_to_screen("Wrong marker! (Should be %s, is actually %s)", tmp1, tmp2);
|
---|
1813 | mr_free(tmp1);
|
---|
1814 | mr_free(tmp2);
|
---|
1815 | }
|
---|
1816 |
|
---|
1817 | /* @} - end of streamGroup */
|
---|