1 | /* libmondo-stream.c
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2 | $Id: libmondo-stream.c 3878 2024-03-08 11:15:10Z 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 |
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19 | #include "libmondo-string-EXT.h"
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20 | #include "libmondo-files-EXT.h"
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21 | #include "libmondo-gui-EXT.h"
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22 | #include "libmondo-fork-EXT.h"
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23 | #include "libmondo-tools-EXT.h"
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24 | #include "libmondo-fifo-EXT.h"
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25 | #include "libmondo-devices-EXT.h"
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26 |
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27 | #define EXTRA_TAPE_CHECKSUMS
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28 | #define STR_HEADER "Mondolicious, baby"
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29 |
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30 | /*@unused@*/
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31 | //static char cvsid[] = "$Id: libmondo-stream.c 3878 2024-03-08 11:15:10Z bruno $";
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32 | extern bool g_sigpipe;
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33 | extern int g_tape_buffer_size_MB;
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34 |
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35 | extern char *g_getfacl;
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36 | extern char *g_getfattr;
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37 | extern char *MONDO_LOGFILE;
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38 |
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39 | /* Reference to global bkpinfo */
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40 | extern struct s_bkpinfo *bkpinfo;
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41 |
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42 | /**
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43 | * FIFO used to read/write to the tape device.
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44 | * @bug This seems obsolete now that we call an external @c buffer program. Please look onto this.
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45 | */
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46 | char g_tape_fifo[MAX_STR_LEN];
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47 |
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48 |
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49 | /**
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50 | * @addtogroup globalGroup
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51 | * @{
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52 | */
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53 | /**
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54 | * The file pointer for the opened tape/CD stream.
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55 | * Opened and closed by openin_tape(), openin_cdstream(),
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56 | * openout_tape(), openout_cdstream(), closein_tape(), closein_cdstream(),
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57 | * closeout_tape(), and closeout_cdstream().
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58 | */
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59 | FILE *g_tape_stream = NULL;
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60 |
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61 |
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62 | /**
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63 | * The position (in kilobytes) where we are on the tape.
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64 | */
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65 | long long g_tape_posK = 0;
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66 |
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67 | /**
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68 | * The current media number we're using. This value is 1-based.
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69 | */
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70 | int g_current_media_number = -1;
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71 |
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72 | /**
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73 | * The tape catalog that keeps track of files written to tape.
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74 | */
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75 | struct s_tapecatalog *g_tapecatalog;
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76 |
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77 | /* @} - end of globalGroup */
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78 |
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79 | int write_backcatalog_to_tape();
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80 |
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81 |
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82 |
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83 |
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84 |
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85 | /**
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86 | * Close the global output file descriptor which Mondo has used to read
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87 | * from buffer or dd, which read from the tape.
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88 | * @param bkpinfo The backup information structure. Unused.
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89 | * @return 0 for success, nonzero for failure.
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90 | * @note This should be called by restore processes only.
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91 | * @note This function also works for cdstreams for now, but don't count on this behavior.
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92 | * @bug @p bkpinfo parameter is unused.
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93 | */
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94 | int closein_tape()
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95 | {
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96 | /*@ int's ******************************************************* */
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97 | int retval = 0;
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98 | int res = 0;
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99 | int ctrl_chr = '\0';
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100 |
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101 | /*@ buffers ***************************************************** */
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102 | char fname[MAX_STR_LEN];
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103 |
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104 | /*@ long long's ************************************************* */
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105 | long long size;
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106 | char *blk;
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107 | int i;
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108 | int j;
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109 |
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110 | blk = (char *) malloc(256 * 1024);
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111 |
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112 | log_it("closein_tape() -- entering");
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113 | res = read_header_block_from_stream(&size, fname, &ctrl_chr);
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114 | retval += res;
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115 | if (ctrl_chr != BLK_END_OF_BACKUP) {
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116 | wrong_marker(BLK_END_OF_BACKUP, ctrl_chr);
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117 | }
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118 | res = read_header_block_from_stream(&size, fname, &ctrl_chr);
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119 | retval += res;
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120 | if (ctrl_chr != BLK_END_OF_TAPE) {
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121 | wrong_marker(BLK_END_OF_TAPE, ctrl_chr);
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122 | }
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123 | for (i = 0; i < 8 && !feof(g_tape_stream); i++) {
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124 | j = fread(blk, 1, 256 * 1024, g_tape_stream);
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125 | if (j) {
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126 | // FIXME
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127 | }
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128 | }
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129 | sleep(1);
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130 | sync();
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131 | sleep(1);
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132 | paranoid_pclose(g_tape_stream);
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133 | log_it("closein_tape() -- leaving");
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134 | if (!bkpinfo->please_dont_eject) {
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135 | eject_device(bkpinfo->media_device);
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136 | }
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137 | paranoid_free(blk);
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138 | paranoid_free(g_tapecatalog);
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139 | return (retval);
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140 | }
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141 |
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142 |
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143 |
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144 | /**
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145 | * Close the global output file descriptor which Mondo has used to read
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146 | * from the CD stream.
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147 | * @param bkpinfo The backup information structure. Passed directly to closein_tape().
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148 | * @return 0 for success, nonzero for failure.
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149 | * @note This should be called by restore processes only.
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150 | */
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151 | int closein_cdstream()
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152 | {
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153 | return (closein_tape());
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154 | }
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155 |
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156 | /**
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157 | * Write a header block to the opened stream (CD or tape).
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158 | * @param length_of_incoming_file The length to store in the header block.
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159 | * Usually matters only if this is a file-related header, in which case it should
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160 | * be the length of the file that will follow.
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161 | * @param filename The filename to store in the header block. Usually matters
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162 | * only if this is a file-related header, in which case this should be the name
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163 | * if the file that will follow.
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164 | * @param control_char The type of header block this is (start-file, end-file, start-tape, ...)
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165 | * @return 0 for success, nonzero for failure.
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166 | */
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167 | int write_header_block_to_stream(off_t length_of_incoming_file, const char *filename, int control_char)
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168 | {
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169 | /*@ buffers **************************************************** */
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170 | char tempblock[TAPE_BLOCK_SIZE];
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171 | char *p;
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172 | char *tmp = NULL;
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173 |
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174 | /*@ int ******************************************************** */
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175 | int i;
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176 |
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177 | off_t olen;
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178 |
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179 | /*@ end vars *************************************************** */
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180 |
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181 | olen = length_of_incoming_file;
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182 | p = strrchr(filename, '/'); /* Make 'em go, "Unnnh!" Oh wait, that was _Master_ P... */
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183 | if (!p) {
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184 | p = filename;
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185 | } else {
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186 | p++;
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187 | }
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188 | if (!g_tape_stream) {
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189 | log_to_screen("You're not backing up to tape. Why write a tape header?");
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190 | return (1);
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191 | }
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192 | for (i = 0; i < (int) TAPE_BLOCK_SIZE; i++) {
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193 | tempblock[i] = 0;
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194 | }
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195 | sprintf(tempblock + 6000 + control_char, STR_HEADER);
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196 | tempblock[7000] = control_char;
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197 | if (length_of_incoming_file > 0) {
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198 | memcpy(tempblock + 7001, (char *) &olen, sizeof(off_t));
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199 | }
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200 | strcpy(tempblock + 1000, filename);
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201 | g_tape_posK += fwrite(tempblock, 1, (size_t) TAPE_BLOCK_SIZE, g_tape_stream) / 1024;
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202 | tmp = marker_to_string(control_char);
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203 | log_msg(6, "%s (fname=%s, size=%ld K)", tmp, p, (long) length_of_incoming_file >> 10);
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204 | mr_free(tmp);
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205 | return (0);
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206 | }
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207 |
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208 |
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209 |
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210 |
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211 | /**
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212 | * Log (to screen) an erroneous marker, along with what it should have been.
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213 | * @param should_be What we were expecting.
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214 | * @param it_is What we got.
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215 | */
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216 | void wrong_marker(int should_be, int it_is)
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217 | {
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218 | char *tmp1 = NULL;
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219 | char *tmp2 = NULL;
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220 | tmp1 = marker_to_string(should_be);
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221 | tmp2 = marker_to_string(it_is);
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222 | log_to_screen("Wrong marker! (Should be %s, is actually %s)", tmp1, tmp2);
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223 | mr_free(tmp1);
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224 | mr_free(tmp2);
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225 | }
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226 |
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227 |
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228 |
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229 | /**
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230 | * Read a header block from the currently opened stream (CD or tape).
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231 | * This block indicates the length of the following file (if it's file-related)
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232 | * the filename (if it's file-related), and the block type.
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233 | * @param plen Where to put the length of the file. Valid only for file-related header blocks.
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234 | * @param filename Where to put the name of the file. Valid only for file-related header blocks.
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235 | * @param pcontrol_char Where to put the type of block (e.g. start-file, end-file, start-tape, ...)
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236 | * @return 0 for success, nonzero for failure.
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237 | * @note If you read a marker (@p pcontrol_char) you're not expecting, you can call wrong_marker().
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238 | */
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239 | int
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240 | read_header_block_from_stream(long long *plen, char *filename,
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241 | int *pcontrol_char)
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242 | {
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243 |
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244 | /*@ buffers ***************************************************** */
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245 | char *tempblock;
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246 | char *tmp = NULL;
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247 |
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248 | /*@ int ********************************************************* */
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249 | int i, retval;
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250 |
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251 | /*@ end vars *************************************************** */
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252 |
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253 | tempblock = (char *) malloc((size_t) TAPE_BLOCK_SIZE);
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254 |
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255 | for (i = 0; i < (int) TAPE_BLOCK_SIZE; i++) {
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256 | tempblock[i] = 0;
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257 | }
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258 | while (!(*pcontrol_char = tempblock[7000])) {
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259 | g_tape_posK += fread(tempblock, 1, (size_t) TAPE_BLOCK_SIZE, g_tape_stream) / 1024;
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260 | }
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261 | memcpy((char *) plen, tempblock + 7001, sizeof(long long));
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262 | if (strcmp(tempblock + 6000 + *pcontrol_char, STR_HEADER)) {
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263 | log_it("Bad header block at %ld K", (long) g_tape_posK);
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264 | }
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265 | strcpy(filename, tempblock + 1000);
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266 | if (*pcontrol_char == BLK_ABORTED_BACKUP) {
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267 | log_to_screen("I can't verify an aborted backup.");
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268 | retval = 1;
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269 | } else {
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270 | retval = 0;
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271 | }
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272 | for (i = 1000; i < 1020; i++) {
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273 | if (tempblock[i] < 32 || tempblock[i] > 126) {
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274 | tempblock[i] = ' ';
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275 | }
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276 | }
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277 | tempblock[i] = '\0';
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278 | tmp = marker_to_string(*pcontrol_char);
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279 | log_msg(6, "%s (fname=%s, size=%ld K)", tmp, tempblock + 1000, (long) (*plen) >> 10);
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280 | mr_free(tmp);
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281 | paranoid_free(tempblock);
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282 | return (retval);
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283 | }
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284 |
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285 |
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286 |
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287 | /**
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288 | * Tell the user to insert tape @p tapeno and wait for it to settle (5 seconds).
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289 | * @param tapeno The tape number to insist on.
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290 | * @bug There is currently no way to actually verify that the user has actually
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291 | * inserted the right tape.
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292 | */
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293 | void insist_on_this_tape_number(int tapeno)
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294 | {
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295 | int i;
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296 | char *tmp = NULL;
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297 |
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298 | log_it("Insisting on tape #%d", tapeno);
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299 | if (g_current_media_number != tapeno) {
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300 | mr_asprintf(tmp, "When the tape drive goes quiet, please insert volume %d in this series.", tapeno);
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301 | popup_and_OK(tmp);
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302 | mr_free(tmp);
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303 | open_evalcall_form("Waiting while the tape drive settles");
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304 | } else {
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305 | open_evalcall_form("Waiting while the tape drive rewinds");
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306 | }
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307 |
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308 | for (i = 0; i <= 100; i += 2) {
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309 | usleep(100000);
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310 | update_evalcall_form(i);
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311 | }
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312 | close_evalcall_form();
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313 | log_it("I assume user has inserted it. They _say_ they have...");
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314 | g_current_media_number = tapeno;
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315 |
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316 | // log_it("g_current_media_number = %d", g_current_media_number);
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317 | log_it("OK, I've finished insisting. On with the revelry.");
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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 |
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324 | /**
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325 | * Start to write to the next tape. Assume the user has already inserted it.
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326 | * @param bkpinfo The backup information structure. @c bkpinfo->media_device is the only field used.
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327 | * @return 0 for success, nonzero for failure.
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328 | */
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329 | int start_to_write_to_next_tape()
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330 | {
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331 | int res = 0;
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332 | char *command = NULL;
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333 |
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334 | if (bkpinfo->media_device == NULL) {
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335 | log_it("Unable to open out from NULL device");
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336 | return (1);
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337 | }
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338 |
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339 | paranoid_pclose(g_tape_stream);
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340 | sync();
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341 | sync();
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342 | sync();
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343 | log_it("New tape requested.");
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344 | insist_on_this_tape_number(g_current_media_number + 1); // will increment g_current_media, too
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345 | if (bkpinfo->backup_media_type == cdstream) {
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346 | 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);
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347 | log_it("Opening OUT to next CD with the command");
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348 | log_it(command);
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349 | log_it("Let's see what happens, shall we?");
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350 | g_tape_stream = popen(command, "w");
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351 | mr_free(command);
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352 |
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353 | if (!g_tape_stream) {
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354 | log_to_screen("Failed to openout to cdstream (fifo)");
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355 | return (1);
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356 | }
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357 | } else {
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358 | log_it("Opening OUT to next tape");
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359 | if (!(g_tape_stream = open_device_via_buffer(bkpinfo->media_device, 'w', bkpinfo->internal_tape_block_size))) {
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360 | log_OS_error(g_tape_fifo);
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361 | log_to_screen("Cannot openin stream device");
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362 | return (1);
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363 | }
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364 | }
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365 | g_tape_posK = 0;
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366 | g_sigpipe = FALSE;
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367 | res += write_header_block_to_stream((off_t)0, "start-of-tape", BLK_START_OF_TAPE); /* just in case */
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368 | res += write_header_block_to_stream((off_t)0, "start-of-backup", BLK_START_OF_BACKUP); /* just in case */
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369 | return (res);
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370 | }
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371 |
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372 |
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373 |
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374 | /**
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375 | * Decide whether we should start a new tape. This is TRUE if we've run out of tape
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376 | * (got SIGPIPE) or look like we will.
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377 | * @param mediasize The size of the tape in megabytes.
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378 | * @param length_of_incoming_file The length of the file we're about to write, in bytes.
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379 | * @bug This seems like it'll only work for media_size != autodetect, but Mondo only allows
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380 | * autodetecting the size. Huh?
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381 | */
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382 |
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383 | /* TODO: Should be reviewed for mediasize being a off_t ??? */
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384 | bool
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385 | should_we_write_to_next_tape(long mediasize,
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386 | off_t length_of_incoming_file)
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387 | {
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388 | /*@ bool's ***************************************************** */
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389 | bool we_need_a_new_tape = FALSE;
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390 |
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391 | /*@ end vars *************************************************** */
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392 |
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393 | if (mediasize == 0) {
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394 | return (FALSE);
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395 | }
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396 | if (mediasize > 0 && (g_tape_posK >> 10 >= mediasize)) {
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397 | log_it("mediasize = %ld", mediasize);
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398 | we_need_a_new_tape = TRUE;
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399 | log_to_screen("Should have started a new tape/CD already");
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400 | }
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401 | if ((g_tape_posK + length_of_incoming_file / 1024) >> 10 >=
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402 | mediasize - (SLICE_SIZE * 4 / 1024)) {
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403 | log_it("g_tape_posK = %ld\nmediasize = %ld\n", g_tape_posK,
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404 | mediasize);
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405 | we_need_a_new_tape = TRUE;
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406 | }
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407 | return (we_need_a_new_tape);
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408 | }
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409 |
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410 |
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411 |
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412 |
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413 |
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414 | /**
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415 | * Close the global output file descriptor which Mondo has been using to write
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416 | * to the tape device (via buffer or dd).
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417 | * @param bkpinfo The backup information structure. @c bkpinfo->media_size is the only field used.
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418 | * @return 0 for success, nonzero for failure.
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419 | * @note This should be called by backup processes only.
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420 | */
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421 | int closeout_tape()
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422 | {
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423 | /*@ int's ******************************************************* */
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424 | int retval = 0;
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425 | // int res = 0;
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426 | // int ctrl_chr = '\0';
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427 |
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428 | /*@ buffers ***************************************************** */
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429 | // char fname[MAX_STR_LEN];
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430 |
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431 | /*@ long long's ************************************************* */
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432 | // long long size;
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433 | int i;
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434 | char *blk;
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435 |
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436 | blk = (char *) malloc(256 * 1024);
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437 |
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438 | sleep(1);
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439 | sync();
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440 | sleep(1);
|
---|
441 | log_it("closeout_tape() -- entering");
|
---|
442 | retval +=
|
---|
443 | write_header_block_to_stream((off_t)0, "end-of-backup",
|
---|
444 | BLK_END_OF_BACKUP);
|
---|
445 | retval += write_header_block_to_stream((off_t)0, "end-of-tape", BLK_END_OF_TAPE); /* just in case */
|
---|
446 | /* write 1MB of crap */
|
---|
447 | for (i = 0; i < 256 * 1024; i++) {
|
---|
448 | blk[i] = (int) (random() & 0xFF);
|
---|
449 | }
|
---|
450 | for (i = 0; i < 4 * 8; i++) {
|
---|
451 | if (fwrite(blk, 1, 256 * 1024, g_tape_stream)) {
|
---|
452 | //FIXME
|
---|
453 | }
|
---|
454 | if (should_we_write_to_next_tape
|
---|
455 | (bkpinfo->media_size, (off_t)256 * 1024)) {
|
---|
456 | start_to_write_to_next_tape();
|
---|
457 | }
|
---|
458 | }
|
---|
459 | /* write 1MB of zeroes */
|
---|
460 | /*
|
---|
461 | for (i = 0; i < 256*1024; i++)
|
---|
462 | {
|
---|
463 | blk[i] = 0;
|
---|
464 | }
|
---|
465 | for (i = 0; i < 4; i++)
|
---|
466 | {
|
---|
467 | fwrite (blk, 1, 256*1024, g_tape_stream);
|
---|
468 | if (should_we_write_to_next_tape (bkpinfo->media_size, 256*1024))
|
---|
469 | {
|
---|
470 | start_to_write_to_next_tape ();
|
---|
471 | }
|
---|
472 | }
|
---|
473 | */
|
---|
474 | sleep(2);
|
---|
475 | paranoid_pclose(g_tape_stream);
|
---|
476 | log_it("closeout_tape() -- leaving");
|
---|
477 | for (i = 0; i < g_tapecatalog->entries; i++) {
|
---|
478 | log_it("i=%d type=%s num=%d aux=%ld posK=%lld", i,
|
---|
479 | (g_tapecatalog->el[i].type ==
|
---|
480 | fileset) ? "fileset" : "bigslice",
|
---|
481 | g_tapecatalog->el[i].number, g_tapecatalog->el[i].aux,
|
---|
482 | g_tapecatalog->el[i].tape_posK);
|
---|
483 | }
|
---|
484 | paranoid_free(blk);
|
---|
485 | paranoid_free(g_tapecatalog);
|
---|
486 | return (retval);
|
---|
487 | }
|
---|
488 |
|
---|
489 |
|
---|
490 |
|
---|
491 | bool mt_says_tape_exists(char *dev)
|
---|
492 | {
|
---|
493 | char *command = NULL;
|
---|
494 | int res;
|
---|
495 |
|
---|
496 | mr_asprintf(command, "mt -f %s status", dev);
|
---|
497 | res = run_program_and_log_output(command, 1);
|
---|
498 | mr_free(command);
|
---|
499 |
|
---|
500 | if (res) {
|
---|
501 | return (FALSE);
|
---|
502 | } else {
|
---|
503 | return (TRUE);
|
---|
504 | }
|
---|
505 | }
|
---|
506 |
|
---|
507 |
|
---|
508 |
|
---|
509 | /**
|
---|
510 | * Determine the name of the tape device. Tries the SCSI tape for
|
---|
511 | * this platform, then "/dev/st0", then "/dev/ht0" and "/dev/osst0".
|
---|
512 | * @return the value of the tape device or NULL if not found. Allocated dynamically must be freed by caller.
|
---|
513 | */
|
---|
514 | char *find_tape_device(void) {
|
---|
515 | char *tmp = NULL;
|
---|
516 | char *dev = NULL;
|
---|
517 | char *command = NULL;
|
---|
518 |
|
---|
519 | log_to_screen("I am looking for your tape streamer. Please wait.");
|
---|
520 |
|
---|
521 | if (bkpinfo->media_device != NULL) {
|
---|
522 | log_msg(3, "Been there, done that. Returning %s", bkpinfo->media_device);
|
---|
523 | return (bkpinfo->media_device);
|
---|
524 | }
|
---|
525 |
|
---|
526 | tmp = find_home_of_exe("lsscsi");
|
---|
527 | if (tmp != NULL) {
|
---|
528 | mr_asprintf(command, "%s | grep ' tape' | awk '{print $NF}' | head -1", tmp);
|
---|
529 | dev = call_program_and_get_last_line_of_output(command);
|
---|
530 | mr_free(command);
|
---|
531 | }
|
---|
532 | mr_free(tmp);
|
---|
533 |
|
---|
534 | if ((dev != NULL) && does_file_exist(dev)) {
|
---|
535 | if (mt_says_tape_exists(dev)) {
|
---|
536 | log_it("find_tape_device found %s automatically", dev);
|
---|
537 | }
|
---|
538 | } else {
|
---|
539 | /* trying something else then */
|
---|
540 | mr_asprintf(dev, "%s", VANILLA_SCSI_TAPE);
|
---|
541 | if (!mt_says_tape_exists(dev)) {
|
---|
542 | mr_asprintf(dev, "%s", ALT_TAPE);
|
---|
543 | if (!mt_says_tape_exists(dev)) {
|
---|
544 | mr_asprintf(dev, "%s", "/dev/osst0");
|
---|
545 | if (!mt_says_tape_exists(dev)) {
|
---|
546 | log_it("Unable to find a tape device on this system");
|
---|
547 | }
|
---|
548 | }
|
---|
549 | }
|
---|
550 | if (dev != NULL) {
|
---|
551 | log_it("find_tape_device found %s manually", dev);
|
---|
552 | }
|
---|
553 | }
|
---|
554 |
|
---|
555 | if ((dev != NULL) && does_file_exist(dev)) {
|
---|
556 | log_it("find_tape_device returns %s", dev);
|
---|
557 | } else {
|
---|
558 | mr_free(dev);
|
---|
559 | log_it("find_tape_device found no tape on your system returning NULL");
|
---|
560 | }
|
---|
561 | return (dev);
|
---|
562 | }
|
---|
563 |
|
---|
564 |
|
---|
565 |
|
---|
566 | /**
|
---|
567 | * Copy a file from the currently opened stream (CD or tape) to either a
|
---|
568 | * @c FILE pointer indicating a currently-opened file, or a filename indicating
|
---|
569 | * a new file to create. This is the backbone function that read_file_from_stream_to_file()
|
---|
570 | * and read_file_from_stream_to_stream() are wrappers for.
|
---|
571 | * @param bkpinfo The backup information structure. @c bkpinfo->media_size is the only field used.
|
---|
572 | * @param outfname If non-NULL, write to this file.
|
---|
573 | * @param foutstream If non-NULL, write to this stream.
|
---|
574 | * @param orig_size The original length of the file in bytes.
|
---|
575 | * @return 0 for success, nonzero for failure.
|
---|
576 | * @note Only @b one of @p outfname or @p foutstream may be non-NULL.
|
---|
577 | */
|
---|
578 | int
|
---|
579 | read_file_from_stream_FULL(char *outfname, FILE * foutstream, long long orig_size)
|
---|
580 | {
|
---|
581 | /*@ buffers ***************************************************** */
|
---|
582 | char *datablock;
|
---|
583 | char *temp_fname;
|
---|
584 | char *temp_cksum;
|
---|
585 | char *actual_cksum = NULL;
|
---|
586 |
|
---|
587 | /*@ int ********************************************************* */
|
---|
588 | int retval = 0;
|
---|
589 | #ifdef EXTRA_TAPE_CHECKSUMS
|
---|
590 | int i, ch;
|
---|
591 | #endif
|
---|
592 | int noof_blocks;
|
---|
593 | int ctrl_chr;
|
---|
594 | int res;
|
---|
595 | /*@ pointers **************************************************** */
|
---|
596 | FILE *fout;
|
---|
597 |
|
---|
598 | /*@ long ***************************************************** */
|
---|
599 | long bytes_to_write = 0L /*,i */ ;
|
---|
600 | // long bytes_successfully_read_in_this_time = 0;
|
---|
601 |
|
---|
602 | /*@ long long *************************************************** */
|
---|
603 | long long temp_size, size;
|
---|
604 | long bytes_read, bytes_to_read;
|
---|
605 | long long total_read_from_tape_for_this_file = 0;
|
---|
606 | long long where_I_was_before_tape_change = 0;
|
---|
607 | /*@ unsigned int ************************************************ */
|
---|
608 | /* unsigned int ch; */
|
---|
609 | unsigned int crc16;
|
---|
610 | unsigned int crctt;
|
---|
611 |
|
---|
612 | /*@ init ******************************************************* */
|
---|
613 | malloc_string(temp_fname);
|
---|
614 | malloc_string(temp_cksum);
|
---|
615 | datablock = malloc(TAPE_BLOCK_SIZE);
|
---|
616 | crc16 = 0;
|
---|
617 | crctt = 0;
|
---|
618 | size = orig_size;
|
---|
619 |
|
---|
620 | /*@ end vars *************************************************** */
|
---|
621 |
|
---|
622 | res = read_header_block_from_stream(&temp_size, temp_fname, &ctrl_chr);
|
---|
623 | if (res) {
|
---|
624 | // FIXME
|
---|
625 | }
|
---|
626 | if (orig_size != temp_size && orig_size != -1) {
|
---|
627 | log_to_screen("output file's size should be %ld K but is apparently %ld K", (long) size >> 10, (long) temp_size >> 10);
|
---|
628 | }
|
---|
629 | if (ctrl_chr != BLK_START_FILE) {
|
---|
630 | wrong_marker(BLK_START_FILE, ctrl_chr);
|
---|
631 | return (1);
|
---|
632 | }
|
---|
633 |
|
---|
634 | if (foutstream) {
|
---|
635 | fout = foutstream;
|
---|
636 | } else {
|
---|
637 | fout = fopen(outfname, "w");
|
---|
638 | }
|
---|
639 | if (!fout) {
|
---|
640 | log_OS_error(outfname);
|
---|
641 | log_to_screen("Cannot openout file");
|
---|
642 | return (1);
|
---|
643 | }
|
---|
644 | total_read_from_tape_for_this_file = 0;
|
---|
645 | for (noof_blocks = 0; size > 0;
|
---|
646 | noof_blocks++, size -=
|
---|
647 | bytes_to_write, total_read_from_tape_for_this_file +=
|
---|
648 | bytes_read) {
|
---|
649 | bytes_to_write =
|
---|
650 | (size < TAPE_BLOCK_SIZE) ? (long) size : TAPE_BLOCK_SIZE;
|
---|
651 | bytes_to_read = TAPE_BLOCK_SIZE;
|
---|
652 | bytes_read = fread(datablock, 1, bytes_to_read, g_tape_stream);
|
---|
653 | while (bytes_read < bytes_to_read) { // next tape!
|
---|
654 | // crctt=crc16=0;
|
---|
655 | where_I_was_before_tape_change = size;
|
---|
656 | log_msg(4, "where_I_was_... = %lld",
|
---|
657 | where_I_was_before_tape_change);
|
---|
658 | start_to_read_from_next_tape();
|
---|
659 | log_msg(4, "Started reading from next tape.");
|
---|
660 | skip_incoming_files_until_we_find_this_one(temp_fname);
|
---|
661 | log_msg(4, "Skipped irrelevant files OK.");
|
---|
662 | for (size = orig_size; size > where_I_was_before_tape_change;
|
---|
663 | size -= bytes_to_write) {
|
---|
664 | bytes_read = fread(datablock, 1, bytes_to_read, g_tape_stream);
|
---|
665 | }
|
---|
666 | log_msg(4, "'size' is now %lld (should be %lld)", size,
|
---|
667 | where_I_was_before_tape_change);
|
---|
668 | log_to_screen("Successfully re-sync'd tape");
|
---|
669 | bytes_read = fread(datablock, 1, bytes_to_read, g_tape_stream);
|
---|
670 | }
|
---|
671 |
|
---|
672 | 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
|
---|
673 | // FIXME
|
---|
674 | }
|
---|
675 |
|
---|
676 | #ifdef EXTRA_TAPE_CHECKSUMS
|
---|
677 | for (i = 0; i < (int) bytes_to_write; i++) {
|
---|
678 | ch = datablock[i];
|
---|
679 | crc16 = updcrcr(crc16, (unsigned) ch);
|
---|
680 | crctt = updcrc(crctt, (unsigned) ch);
|
---|
681 | }
|
---|
682 | #endif
|
---|
683 | }
|
---|
684 | log_msg(6, "Total read from tape for this file = %lld",
|
---|
685 | total_read_from_tape_for_this_file);
|
---|
686 | log_msg(6, ".......................... Should be %lld", orig_size);
|
---|
687 | g_tape_posK += total_read_from_tape_for_this_file / 1024;
|
---|
688 | mr_asprintf(actual_cksum, "%04x%04x", crc16, crctt);
|
---|
689 | if (foutstream) { /*log_it("Finished writing to foutstream"); */
|
---|
690 | } else {
|
---|
691 | paranoid_fclose(fout);
|
---|
692 | }
|
---|
693 | res = read_header_block_from_stream(&temp_size, temp_cksum, &ctrl_chr);
|
---|
694 | if (ctrl_chr != BLK_STOP_FILE) {
|
---|
695 | wrong_marker(BLK_STOP_FILE, ctrl_chr);
|
---|
696 | }
|
---|
697 | if (strcmp(temp_cksum, actual_cksum)) {
|
---|
698 | log_to_screen("actual cksum=%s; recorded cksum=%s", actual_cksum, temp_cksum);
|
---|
699 | log_to_screen("%s (%ld K) is corrupt on tape", temp_fname, (long) orig_size >> 10);
|
---|
700 | retval++;
|
---|
701 | }
|
---|
702 | mr_free(actual_cksum);
|
---|
703 |
|
---|
704 | paranoid_free(datablock);
|
---|
705 | paranoid_free(temp_fname);
|
---|
706 | paranoid_free(temp_cksum);
|
---|
707 | return (retval);
|
---|
708 | }
|
---|
709 |
|
---|
710 |
|
---|
711 | /**
|
---|
712 | * Copy a file from the opened stream (CD or tape) to @p outfile.
|
---|
713 | * @param outfile The file to write to.
|
---|
714 | * @param size The size of the file in the input stream.
|
---|
715 | * @return 0 for success, nonzero for failure.
|
---|
716 | */
|
---|
717 | int
|
---|
718 | read_file_from_stream_to_file(char *outfile, long long size)
|
---|
719 | {
|
---|
720 |
|
---|
721 | /*@ int ******************************************************** */
|
---|
722 | int res;
|
---|
723 |
|
---|
724 | /*@ end vars *************************************************** */
|
---|
725 |
|
---|
726 | res = read_file_from_stream_FULL(outfile, NULL, size);
|
---|
727 |
|
---|
728 | return (res);
|
---|
729 | }
|
---|
730 |
|
---|
731 |
|
---|
732 |
|
---|
733 |
|
---|
734 | int read_EXAT_files_from_tape(long long *ptmp_size, char *tmp_fname,
|
---|
735 | int *pctrl_chr, char *xattr_fname,
|
---|
736 | char *acl_fname)
|
---|
737 | {
|
---|
738 | int res = 0;
|
---|
739 | char fname_buf[PATH_MAX];
|
---|
740 | char *fname = (char *)fname_buf; /* Should NOT be NULL */
|
---|
741 | char *tmp = NULL;
|
---|
742 |
|
---|
743 | // xattr
|
---|
744 | if (g_getfattr) {
|
---|
745 | res = read_header_block_from_stream(ptmp_size, fname, pctrl_chr);
|
---|
746 | if (*pctrl_chr != BLK_START_EXAT_FILE) {
|
---|
747 | wrong_marker(BLK_START_EXAT_FILE, *pctrl_chr);
|
---|
748 | }
|
---|
749 | if (strstr(fname, "xattr") == NULL) {
|
---|
750 | mr_asprintf(tmp,"Wrong order expected xattr, got %s, sunshine.", fname);
|
---|
751 | fatal_error(tmp);
|
---|
752 | }
|
---|
753 | read_file_from_stream_to_file(xattr_fname, *ptmp_size);
|
---|
754 | res = read_header_block_from_stream(ptmp_size, fname, pctrl_chr);
|
---|
755 | if (*pctrl_chr != BLK_STOP_EXAT_FILE) {
|
---|
756 | wrong_marker(BLK_STOP_EXAT_FILE, *pctrl_chr);
|
---|
757 | }
|
---|
758 | log_msg(1, "Got xattr");
|
---|
759 | res = read_header_block_from_stream(ptmp_size, fname, pctrl_chr);
|
---|
760 | if (*pctrl_chr != BLK_STOP_EXTENDED_ATTRIBUTES) {
|
---|
761 | wrong_marker(BLK_STOP_EXTENDED_ATTRIBUTES, *pctrl_chr);
|
---|
762 | }
|
---|
763 | res = read_header_block_from_stream(ptmp_size, fname, pctrl_chr);
|
---|
764 | if (*pctrl_chr == BLK_START_AN_AFIO_OR_SLICE) {
|
---|
765 | log_msg(1, "No acl attributes found, skipping to afio files");
|
---|
766 | return(0);
|
---|
767 | } else {
|
---|
768 | if (*pctrl_chr != BLK_START_EXTENDED_ATTRIBUTES) {
|
---|
769 | wrong_marker(BLK_START_EXTENDED_ATTRIBUTES, *pctrl_chr);
|
---|
770 | }
|
---|
771 | }
|
---|
772 | }
|
---|
773 | // acl
|
---|
774 | if (g_getfacl) {
|
---|
775 | res = read_header_block_from_stream(ptmp_size, fname, pctrl_chr);
|
---|
776 | if (*pctrl_chr != BLK_START_EXAT_FILE) {
|
---|
777 | wrong_marker(BLK_START_EXAT_FILE, *pctrl_chr);
|
---|
778 | }
|
---|
779 | if (strstr(fname, "acl") == NULL) {
|
---|
780 | mr_asprintf(tmp,"Wrong order expected acl, got %s, sunshine.", fname);
|
---|
781 | fatal_error(tmp);
|
---|
782 | }
|
---|
783 | read_file_from_stream_to_file(acl_fname, *ptmp_size);
|
---|
784 | res = read_header_block_from_stream(ptmp_size, fname, pctrl_chr);
|
---|
785 | if (*pctrl_chr != BLK_STOP_EXAT_FILE) {
|
---|
786 | wrong_marker(BLK_STOP_EXAT_FILE, *pctrl_chr);
|
---|
787 | }
|
---|
788 | res = read_header_block_from_stream(ptmp_size, fname, pctrl_chr);
|
---|
789 | if (*pctrl_chr != BLK_STOP_EXTENDED_ATTRIBUTES) {
|
---|
790 | wrong_marker(BLK_STOP_EXTENDED_ATTRIBUTES, *pctrl_chr);
|
---|
791 | }
|
---|
792 | log_msg(1, "Got acl");
|
---|
793 | }
|
---|
794 | // tarball itself
|
---|
795 | res = read_header_block_from_stream(ptmp_size, tmp_fname, pctrl_chr);
|
---|
796 | log_msg(1, "End of extended attributes, now looking for afioball");
|
---|
797 | return (res);
|
---|
798 | }
|
---|
799 |
|
---|
800 |
|
---|
801 | /**
|
---|
802 | * Copy @p infile to the opened stream (CD or tape).
|
---|
803 | * @param bkpinfo The backup information structure. @c bkpinfo->media_size is the only field used.
|
---|
804 | * @param infile The file to write to the stream.
|
---|
805 | * @return 0 for success, nonzero for failure.
|
---|
806 | */
|
---|
807 | int write_file_to_stream_from_file(char *infile)
|
---|
808 | {
|
---|
809 | /*@ buffers **************************************************** */
|
---|
810 | char datablock[TAPE_BLOCK_SIZE];
|
---|
811 | char *checksum = NULL;
|
---|
812 | char *infile_basename;
|
---|
813 |
|
---|
814 | /*@ int ******************************************************** */
|
---|
815 | int retval = 0;
|
---|
816 | int noof_blocks;
|
---|
817 |
|
---|
818 | /* unsigned int ch; */
|
---|
819 | unsigned int crc16;
|
---|
820 | unsigned int crctt;
|
---|
821 |
|
---|
822 | /*@ pointers *************************************************** */
|
---|
823 | FILE *fin;
|
---|
824 | char *p;
|
---|
825 |
|
---|
826 | /*@ long ******************************************************* */
|
---|
827 | long bytes_to_read = 0;
|
---|
828 | long i;
|
---|
829 |
|
---|
830 | off_t filesize;
|
---|
831 |
|
---|
832 | #ifdef EXTRA_TAPE_CHECKSUMS
|
---|
833 | int ch;
|
---|
834 | #endif
|
---|
835 |
|
---|
836 | /*@ initialize ************************************************ */
|
---|
837 | crc16 = 0;
|
---|
838 | crctt = 0;
|
---|
839 |
|
---|
840 |
|
---|
841 |
|
---|
842 | /*@ end vars *************************************************** */
|
---|
843 |
|
---|
844 | infile_basename = strrchr(infile, '/');
|
---|
845 | if (infile_basename) {
|
---|
846 | infile_basename++;
|
---|
847 | } else {
|
---|
848 | infile_basename = infile;
|
---|
849 | }
|
---|
850 | filesize = length_of_file(infile);
|
---|
851 | if (should_we_write_to_next_tape(bkpinfo->media_size, filesize)) {
|
---|
852 | start_to_write_to_next_tape();
|
---|
853 | write_backcatalog_to_tape();
|
---|
854 | }
|
---|
855 | p = strrchr(infile, '/');
|
---|
856 | if (!p) {
|
---|
857 | p = infile;
|
---|
858 | } else {
|
---|
859 | p++;
|
---|
860 | }
|
---|
861 | log_it("Writing file '%s' to tape (%ld KB)", p, (long) filesize >> 10);
|
---|
862 | write_header_block_to_stream(filesize, infile_basename, BLK_START_FILE);
|
---|
863 | //go_here_to_restart_saving_of_file:
|
---|
864 | if (!(fin = fopen(infile, "r"))) {
|
---|
865 | log_OS_error(infile);
|
---|
866 | return (1);
|
---|
867 | }
|
---|
868 | for (noof_blocks = 0; filesize > 0;
|
---|
869 | noof_blocks++, filesize -= bytes_to_read) {
|
---|
870 | if (filesize < TAPE_BLOCK_SIZE) {
|
---|
871 | bytes_to_read = (long) filesize;
|
---|
872 | for (i = 0; i < TAPE_BLOCK_SIZE; i++) {
|
---|
873 | datablock[i] = '\0';
|
---|
874 | }
|
---|
875 | } else {
|
---|
876 | bytes_to_read = TAPE_BLOCK_SIZE;
|
---|
877 | }
|
---|
878 | if (fread(datablock, 1, (size_t) bytes_to_read, fin)) {
|
---|
879 | // FIXME
|
---|
880 | }
|
---|
881 | g_tape_posK +=
|
---|
882 | fwrite(datablock, 1, /*bytes_to_read */
|
---|
883 | (size_t) TAPE_BLOCK_SIZE,
|
---|
884 | g_tape_stream) / 1024;
|
---|
885 | if (g_sigpipe) {
|
---|
886 | log_it("Sigpipe occurred recently. I'll start a new tape.");
|
---|
887 | fclose(fin);
|
---|
888 | g_sigpipe = FALSE;
|
---|
889 | start_to_write_to_next_tape();
|
---|
890 | write_backcatalog_to_tape(); // kinda-sorta recursive :)
|
---|
891 | return (0);
|
---|
892 | }
|
---|
893 | #ifdef EXTRA_TAPE_CHECKSUMS
|
---|
894 | for (i = 0; i < bytes_to_read; i++) {
|
---|
895 | ch = datablock[i];
|
---|
896 | crc16 = updcrcr(crc16, (unsigned) ch);
|
---|
897 | crctt = updcrc(crctt, (unsigned) ch);
|
---|
898 | }
|
---|
899 | #endif
|
---|
900 | }
|
---|
901 | paranoid_fclose(fin);
|
---|
902 | mr_asprintf(checksum, "%04x%04x", crc16, crctt);
|
---|
903 | /* TODO: what does it do ??? */
|
---|
904 | write_header_block_to_stream((off_t)g_current_media_number, checksum, BLK_STOP_FILE);
|
---|
905 | mr_free(checksum);
|
---|
906 |
|
---|
907 | // log_it("File '%s' written to tape.", infile);
|
---|
908 | return (retval);
|
---|
909 | }
|
---|
910 |
|
---|
911 |
|
---|
912 |
|
---|
913 |
|
---|
914 |
|
---|
915 |
|
---|
916 |
|
---|
917 |
|
---|
918 | int write_EXAT_files_to_tape(char *xattr_fname,
|
---|
919 | char *acl_fname)
|
---|
920 | {
|
---|
921 | int res = 0;
|
---|
922 | if (g_getfattr) {
|
---|
923 | // xattr
|
---|
924 | write_header_block_to_stream(length_of_file(xattr_fname), xattr_fname, BLK_START_EXTENDED_ATTRIBUTES);
|
---|
925 | write_header_block_to_stream(length_of_file(xattr_fname), xattr_fname, BLK_START_EXAT_FILE);
|
---|
926 | write_file_to_stream_from_file(xattr_fname);
|
---|
927 | write_header_block_to_stream((off_t)-1, xattr_fname, BLK_STOP_EXAT_FILE);
|
---|
928 | write_header_block_to_stream(length_of_file(xattr_fname), xattr_fname, BLK_STOP_EXTENDED_ATTRIBUTES);
|
---|
929 | }
|
---|
930 | if (g_getfacl) {
|
---|
931 | // acl
|
---|
932 | write_header_block_to_stream(length_of_file(acl_fname), acl_fname, BLK_START_EXTENDED_ATTRIBUTES);
|
---|
933 | write_header_block_to_stream(length_of_file(acl_fname), acl_fname, BLK_START_EXAT_FILE);
|
---|
934 | write_file_to_stream_from_file(acl_fname);
|
---|
935 | write_header_block_to_stream((off_t)-1, acl_fname, BLK_STOP_EXAT_FILE);
|
---|
936 | write_header_block_to_stream(length_of_file(acl_fname), acl_fname, BLK_STOP_EXTENDED_ATTRIBUTES);
|
---|
937 | }
|
---|
938 | return (res);
|
---|
939 | }
|
---|
940 |
|
---|
941 |
|
---|
942 |
|
---|
943 |
|
---|
944 | /**
|
---|
945 | * Debugging aid - log the offset we're at on the tape (reading or writing).
|
---|
946 | */
|
---|
947 | void log_tape_pos(void)
|
---|
948 | {
|
---|
949 | /*@ buffers ***************************************************** */
|
---|
950 |
|
---|
951 |
|
---|
952 | /*@ end vars *************************************************** */
|
---|
953 |
|
---|
954 | log_it("Tape position -- %ld KB (%ld MB)", (long) g_tape_posK,
|
---|
955 | (long) g_tape_posK >> 10);
|
---|
956 | }
|
---|
957 |
|
---|
958 |
|
---|
959 |
|
---|
960 |
|
---|
961 | /**
|
---|
962 | * Add a file to a collection of recently archived filesets/slices.
|
---|
963 | * The type is determined by the filename: if it contains ".afio." it is
|
---|
964 | * assumed to be a fileset, otherwise if it contains "slice" it's a slice,
|
---|
965 | * otherwise we generate a fatal_error().
|
---|
966 | * @param td The current @c bkpinfo->tempdir (file will be placed in <tt>td</tt>/tmpfs/backcatalog/).
|
---|
967 | * @param latest_fname The file to place in the collection.
|
---|
968 | * @return 0, always.
|
---|
969 | * @bug Return value is redundant.
|
---|
970 | * @bug The detection won't work for uncompressed afioballs (they end in ".afio", no dot afterwards). // Not true. They end in '.' -Hugo
|
---|
971 | */
|
---|
972 | int maintain_collection_of_recent_archives(char *td, char *latest_fname)
|
---|
973 | {
|
---|
974 | long long final_alleged_writeK, final_projected_certain_writeK,
|
---|
975 | cposK, bufsize_K;
|
---|
976 | int last, curr, i;
|
---|
977 | char *command = NULL;
|
---|
978 | char *tmpdir = NULL;
|
---|
979 | char *old_fname = NULL;
|
---|
980 | char *p;
|
---|
981 | char suffix[16];
|
---|
982 |
|
---|
983 | bufsize_K = (long long) (1024LL * (1 + g_tape_buffer_size_MB));
|
---|
984 | if ((p = strrchr(latest_fname, '.'))) {
|
---|
985 | strcpy(suffix, ++p);
|
---|
986 | } else {
|
---|
987 | suffix[0] = '\0';
|
---|
988 | }
|
---|
989 | mr_asprintf(tmpdir, "%s/tmpfs/backcatalog", td);
|
---|
990 | mkdir(tmpdir, 0x700);
|
---|
991 | mr_asprintf(command, "cp -f %s %s", latest_fname, tmpdir);
|
---|
992 | if (run_program_and_log_output(command, 6)) {
|
---|
993 | log_it("Warning - failed to copy %s to backcatalog at %s",
|
---|
994 | latest_fname, tmpdir);
|
---|
995 | }
|
---|
996 | mr_free(command);
|
---|
997 |
|
---|
998 | last = g_tapecatalog->entries - 1;
|
---|
999 | if (last <= 0) {
|
---|
1000 | log_it("Too early to start deleting from collection.");
|
---|
1001 | mr_free(tmpdir);
|
---|
1002 | return (0);
|
---|
1003 | }
|
---|
1004 | final_alleged_writeK = g_tapecatalog->el[last].tape_posK;
|
---|
1005 | final_projected_certain_writeK = final_alleged_writeK - bufsize_K;
|
---|
1006 | for (curr = last; curr >= 0; curr--) {
|
---|
1007 | cposK = g_tapecatalog->el[curr].tape_posK;
|
---|
1008 | if (cposK < final_projected_certain_writeK) {
|
---|
1009 | break;
|
---|
1010 | }
|
---|
1011 | }
|
---|
1012 | if (curr < 0) {
|
---|
1013 | log_it("Not far enough into tape to start deleting old archives from collection.");
|
---|
1014 | mr_free(tmpdir);
|
---|
1015 | return (0);
|
---|
1016 | }
|
---|
1017 |
|
---|
1018 | for (i = curr - 1; i >= 0 && curr - i < 10; i--) {
|
---|
1019 | mr_asprintf(old_fname, "%s/%s", tmpdir, g_tapecatalog->el[i].fname);
|
---|
1020 | unlink(old_fname);
|
---|
1021 | mr_free(old_fname);
|
---|
1022 | }
|
---|
1023 | mr_free(tmpdir);
|
---|
1024 | return (0);
|
---|
1025 | }
|
---|
1026 |
|
---|
1027 |
|
---|
1028 | int set_tape_block_size_with_mt(long internal_tape_block_size)
|
---|
1029 | {
|
---|
1030 | char *tmp = NULL;
|
---|
1031 | int res;
|
---|
1032 |
|
---|
1033 | if (bkpinfo->media_device == NULL) {
|
---|
1034 | return(1);
|
---|
1035 | }
|
---|
1036 |
|
---|
1037 | if (strncmp(bkpinfo->media_device, "/dev/", 5)) {
|
---|
1038 | log_msg(1, "Not using 'mt setblk'. This isn't an actual /dev entry.");
|
---|
1039 | return (0);
|
---|
1040 | }
|
---|
1041 | mr_asprintf(tmp, "mt -f %s setblk %ld", bkpinfo->media_device, internal_tape_block_size);
|
---|
1042 | res = run_program_and_log_output(tmp, 3);
|
---|
1043 | mr_free(tmp);
|
---|
1044 | return (res);
|
---|
1045 | }
|
---|
1046 |
|
---|
1047 |
|
---|
1048 | /**
|
---|
1049 | * Handle OBDR if we were asked to do so
|
---|
1050 | * @param tapedev The tape device to open for reading.
|
---|
1051 | */
|
---|
1052 | int skip_obdr(void)
|
---|
1053 | {
|
---|
1054 | char *command = NULL;
|
---|
1055 | int res = 0;
|
---|
1056 |
|
---|
1057 | if (bkpinfo->media_device == NULL) {
|
---|
1058 | return(1);
|
---|
1059 | }
|
---|
1060 |
|
---|
1061 | log_it("Skipping OBDR headers");
|
---|
1062 | mr_asprintf(command, "mt -f %s rewind",bkpinfo->media_device);
|
---|
1063 | res = run_program_and_log_output(command, 1);
|
---|
1064 | paranoid_free(command);
|
---|
1065 |
|
---|
1066 | mr_asprintf(command, "mt -f %s fsf 2",bkpinfo->media_device);
|
---|
1067 | res = run_program_and_log_output(command, 1);
|
---|
1068 | paranoid_free(command);
|
---|
1069 |
|
---|
1070 | set_tape_block_size_with_mt(bkpinfo->internal_tape_block_size);
|
---|
1071 | return(res);
|
---|
1072 | }
|
---|
1073 |
|
---|
1074 |
|
---|
1075 |
|
---|
1076 | /**
|
---|
1077 | * Open the tape device for input.
|
---|
1078 | * @param bkpinfo The backup information structure. Fields used:
|
---|
1079 | * - @c bkpinfo->media_device
|
---|
1080 | * - @c bkpinfo->tmpdir
|
---|
1081 | * @return 0 for success, nonzero for failure.
|
---|
1082 | * @note This will also work with a cdstream for now, but don't count on this behavior.
|
---|
1083 | */
|
---|
1084 | int openin_tape()
|
---|
1085 | {
|
---|
1086 | /*@ buffer ***************************************************** */
|
---|
1087 | char fname[MAX_STR_LEN];
|
---|
1088 | char *datablock;
|
---|
1089 | char *tmp = NULL;
|
---|
1090 | char *old_pwd = NULL;
|
---|
1091 | char *outfname = NULL;
|
---|
1092 | /*@ int ******************************************************* */
|
---|
1093 | int i;
|
---|
1094 | int j;
|
---|
1095 | int res = 0;
|
---|
1096 | long length, templong;
|
---|
1097 | size_t k;
|
---|
1098 | int retval = 0;
|
---|
1099 | int ctrl_chr;
|
---|
1100 |
|
---|
1101 | /*@ long long ************************************************* */
|
---|
1102 | long long size;
|
---|
1103 |
|
---|
1104 | /*@ pointers ************************************************** */
|
---|
1105 | FILE *fout;
|
---|
1106 |
|
---|
1107 | /*@ end vars *************************************************** */
|
---|
1108 |
|
---|
1109 | g_tapecatalog = mr_malloc(sizeof(struct s_tapecatalog));
|
---|
1110 | g_tapecatalog->entries = 0;
|
---|
1111 | g_tape_posK = 0;
|
---|
1112 | if (g_tape_stream) {
|
---|
1113 | log_it("FYI - I won't 'openin' the tape. It's already open.");
|
---|
1114 | return (0);
|
---|
1115 | }
|
---|
1116 |
|
---|
1117 | // mondoarchive should have configured everything to give the right non-rewinding device
|
---|
1118 | if (bkpinfo->media_device == NULL) {
|
---|
1119 | log_it("Not able to open tape - no tape device found");
|
---|
1120 | return (1);
|
---|
1121 | }
|
---|
1122 | if (bkpinfo->use_obdr) {
|
---|
1123 | res = skip_obdr();
|
---|
1124 | if (res != 0) {
|
---|
1125 | log_it("Not able to skip OBDR - Restore will have to be done manually");
|
---|
1126 | return (1);
|
---|
1127 | }
|
---|
1128 | } else {
|
---|
1129 | set_tape_block_size_with_mt(bkpinfo->internal_tape_block_size);
|
---|
1130 | }
|
---|
1131 |
|
---|
1132 | insist_on_this_tape_number(1);
|
---|
1133 | mr_asprintf(outfname, "%s/tmp/all.tar.gz", bkpinfo->tmpdir);
|
---|
1134 | make_hole_for_file(outfname);
|
---|
1135 |
|
---|
1136 | log_it("Opening IN tape");
|
---|
1137 | if (!(g_tape_stream = open_device_via_buffer(bkpinfo->media_device, 'r', bkpinfo->internal_tape_block_size))) {
|
---|
1138 | log_OS_error(g_tape_fifo);
|
---|
1139 | log_to_screen("Cannot openin stream device");
|
---|
1140 | mr_free(outfname);
|
---|
1141 | return (1);
|
---|
1142 | }
|
---|
1143 | log_to_screen("Reading stream");
|
---|
1144 | log_it("stream device = '%s'", bkpinfo->media_device);
|
---|
1145 | /* skip data disks */
|
---|
1146 | open_evalcall_form("Skipping data disks on stream");
|
---|
1147 | log_to_screen("Skipping data disks on stream");
|
---|
1148 | if (!(fout = fopen(outfname, "w"))) {
|
---|
1149 | log_OS_error(outfname);
|
---|
1150 | log_to_screen("Cannot openout datadisk all.tar.gz file");
|
---|
1151 | mr_free(outfname);
|
---|
1152 | return (-1);
|
---|
1153 | }
|
---|
1154 | if (!(datablock = (char *) malloc(256 * 1024))) {
|
---|
1155 | log_to_screen("Unable to malloc 256*1024");
|
---|
1156 | mr_free(outfname);
|
---|
1157 | finish(1);
|
---|
1158 | }
|
---|
1159 | for (i = 0; i < 32; i++) {
|
---|
1160 | for (j = 0; j < 4; j++) {
|
---|
1161 | for (length = 0, k = 0; length < 256 * 1024; length += k) {
|
---|
1162 | k = fread(datablock + length, 1, 256 * 1024 - length,
|
---|
1163 | g_tape_stream);
|
---|
1164 | }
|
---|
1165 | if (fwrite(datablock, 1, (size_t) length, fout)) {
|
---|
1166 | // FIXME
|
---|
1167 | }
|
---|
1168 | g_tape_posK += length / 1024;
|
---|
1169 | }
|
---|
1170 | if (i > 8) // otherwise, 'buffer' distorts calculations
|
---|
1171 | {
|
---|
1172 | templong = ((i - 8) * 4 + j) * 100 / (128 - 8 * 4);
|
---|
1173 | update_evalcall_form((int) (templong));
|
---|
1174 | }
|
---|
1175 | }
|
---|
1176 | paranoid_fclose(fout);
|
---|
1177 | paranoid_free(datablock);
|
---|
1178 |
|
---|
1179 | /* find initial blocks */
|
---|
1180 | res = read_header_block_from_stream(&size, fname, &ctrl_chr);
|
---|
1181 | retval += res;
|
---|
1182 | if (ctrl_chr != BLK_START_OF_TAPE) {
|
---|
1183 | wrong_marker(BLK_START_OF_TAPE, ctrl_chr);
|
---|
1184 | }
|
---|
1185 | res = read_header_block_from_stream(&size, fname, &ctrl_chr);
|
---|
1186 | retval += res;
|
---|
1187 | if (ctrl_chr != BLK_START_OF_BACKUP) {
|
---|
1188 | wrong_marker(BLK_START_OF_BACKUP, ctrl_chr);
|
---|
1189 | }
|
---|
1190 | close_evalcall_form();
|
---|
1191 | log_it("Saved all.tar.gz to '%s'", outfname);
|
---|
1192 | old_pwd = mr_getcwd();
|
---|
1193 | if (chdir(bkpinfo->tmpdir)) {
|
---|
1194 | // FIXME
|
---|
1195 | }
|
---|
1196 | mr_asprintf(tmp, "tar -zxf %s ./tmp/mondorestore.cfg 2> /dev/null", outfname);
|
---|
1197 | paranoid_system(tmp);
|
---|
1198 | mr_free(tmp);
|
---|
1199 |
|
---|
1200 | paranoid_system("cp -f tmp/mondorestore.cfg . 2> /dev/null");
|
---|
1201 | if (chdir(old_pwd)) {
|
---|
1202 | // FIXME
|
---|
1203 | }
|
---|
1204 | mr_free(old_pwd);
|
---|
1205 | unlink(outfname);
|
---|
1206 | mr_free(outfname);
|
---|
1207 | return (retval);
|
---|
1208 | }
|
---|
1209 |
|
---|
1210 |
|
---|
1211 |
|
---|
1212 | /**
|
---|
1213 | * Open the CD stream for input.
|
---|
1214 | * @param bkpinfo The backup information structure. Passed to openin_tape().
|
---|
1215 | * @return 0 for success, nonzero for failure.
|
---|
1216 | * @note Equivalent to openin_tape() for now, but don't count on this behavior.
|
---|
1217 | */
|
---|
1218 | int openin_cdstream()
|
---|
1219 | {
|
---|
1220 | return (openin_tape());
|
---|
1221 | }
|
---|
1222 |
|
---|
1223 | /**
|
---|
1224 | * Return the non-rewinding device when passed the normal one
|
---|
1225 | * @param tapedev The tape device to open for writing.
|
---|
1226 | * @note the caller needs to free the string returned
|
---|
1227 | */
|
---|
1228 | char *get_non_rewind_dev(char *tapedev)
|
---|
1229 | {
|
---|
1230 |
|
---|
1231 | char *ntapedev = NULL;
|
---|
1232 | char *p = NULL;
|
---|
1233 | char *q = NULL;
|
---|
1234 | char *r = NULL;
|
---|
1235 |
|
---|
1236 | ntapedev = (char *)mr_malloc(strlen(tapedev)+2*sizeof(char));
|
---|
1237 | p = strrchr(tapedev,'/');
|
---|
1238 | if (p == NULL) {
|
---|
1239 | log_it("Didn't find a '/' in %s",tapedev);
|
---|
1240 | return(NULL);
|
---|
1241 | }
|
---|
1242 |
|
---|
1243 | /* Copy tapedev content up to the last / */
|
---|
1244 | q = tapedev;
|
---|
1245 | r = ntapedev;
|
---|
1246 | while (q != p) {
|
---|
1247 | *r = *q;
|
---|
1248 | r++;
|
---|
1249 | q++;
|
---|
1250 | }
|
---|
1251 | /* Copy the '/' */
|
---|
1252 | *r = *q;
|
---|
1253 | r++;
|
---|
1254 | q++;
|
---|
1255 | /* Adds a 'n' - non-rewinding */
|
---|
1256 | *r = 'n';
|
---|
1257 | r++;
|
---|
1258 | /* Copy the rest of tapedev */
|
---|
1259 | while (*q != '\0') {
|
---|
1260 | *r = *q;
|
---|
1261 | r++;
|
---|
1262 | q++;
|
---|
1263 | }
|
---|
1264 | *r = '\0';
|
---|
1265 | if (mt_says_tape_exists(ntapedev)) {
|
---|
1266 | log_it("Non-rewinding tape device is %s",ntapedev);
|
---|
1267 | } else {
|
---|
1268 | log_it("Unable to find non-rewinding tape device.");
|
---|
1269 | ntapedev = NULL;
|
---|
1270 | }
|
---|
1271 | return(ntapedev);
|
---|
1272 | }
|
---|
1273 |
|
---|
1274 | /**
|
---|
1275 | * Handle OBDR if we were asked to do so
|
---|
1276 | * @param tapedev The tape device to open for writing.
|
---|
1277 | * @return 0 for success, nonzero for failure.
|
---|
1278 | * @note This should be called ONLY from backup processes. It will OVERWRITE ANY
|
---|
1279 | * EXISTING DATA on the tape!
|
---|
1280 | */
|
---|
1281 | int create_obdr(void)
|
---|
1282 | {
|
---|
1283 |
|
---|
1284 | char *command = NULL;
|
---|
1285 | int res = 0;
|
---|
1286 |
|
---|
1287 | if (bkpinfo->media_device == NULL) {
|
---|
1288 | return(1);
|
---|
1289 | }
|
---|
1290 |
|
---|
1291 | log_it("Creating OBDR headers");
|
---|
1292 | /* OBDR: First block 10 kB of zero bs = 512 */
|
---|
1293 | mr_asprintf(command, "mt -f %s compression off",bkpinfo->media_device);
|
---|
1294 | res = run_program_and_log_output(command, 1);
|
---|
1295 | paranoid_free(command);
|
---|
1296 |
|
---|
1297 | mr_asprintf(command, "mt -f %s rewind",bkpinfo->media_device);
|
---|
1298 | res += run_program_and_log_output(command, 1);
|
---|
1299 | paranoid_free(command);
|
---|
1300 |
|
---|
1301 | set_tape_block_size_with_mt(512);
|
---|
1302 |
|
---|
1303 | mr_asprintf(command, "dd if=/dev/zero of=%s bs=512 count=20",bkpinfo->media_device);
|
---|
1304 | res += run_program_and_log_output(command, 1);
|
---|
1305 | paranoid_free(command);
|
---|
1306 |
|
---|
1307 | /* OBDR: then ISO boot image bs = 2048 */
|
---|
1308 | set_tape_block_size_with_mt(2048);
|
---|
1309 |
|
---|
1310 | mr_asprintf(command, "dd if=%s of=%s bs=2048",MINDI_CACHE"/mindi.iso",bkpinfo->media_device);
|
---|
1311 | res += run_program_and_log_output(command, 1);
|
---|
1312 | paranoid_free(command);
|
---|
1313 |
|
---|
1314 | set_tape_block_size_with_mt(bkpinfo->internal_tape_block_size);
|
---|
1315 |
|
---|
1316 | /* restore compression mode on */
|
---|
1317 | mr_asprintf(command, "mt -f %s compression on",bkpinfo->media_device);
|
---|
1318 | res = run_program_and_log_output(command, 1);
|
---|
1319 | paranoid_free(command);
|
---|
1320 |
|
---|
1321 | return(res);
|
---|
1322 | }
|
---|
1323 |
|
---|
1324 |
|
---|
1325 | /**
|
---|
1326 | * Start writing to a CD stream.
|
---|
1327 | * @param cddev The CD device to openout via cdrecord.
|
---|
1328 | * @param speed The speed to write at.
|
---|
1329 | * @return 0 for success, nonzero for failure.
|
---|
1330 | * @note This should be called only from backup processes.
|
---|
1331 | */
|
---|
1332 | int openout_cdstream(char *cddev, int speed)
|
---|
1333 | {
|
---|
1334 | /*@ buffers ***************************************************** */
|
---|
1335 | char *command = NULL;
|
---|
1336 |
|
---|
1337 | /*@ end vars *************************************************** */
|
---|
1338 |
|
---|
1339 | if (cddev == NULL) {
|
---|
1340 | log_to_screen("Failed to openout NULL cddev");
|
---|
1341 | return (1);
|
---|
1342 | }
|
---|
1343 | /* add 'dummy' if testing */
|
---|
1344 | mr_asprintf(command, "cdrecord -eject dev=%s speed=%d fs=24m -waiti - >> %s 2>> %s", cddev, speed, MONDO_LOGFILE, MONDO_LOGFILE);
|
---|
1345 | /* initialise the catalog */
|
---|
1346 | g_current_media_number = 1;
|
---|
1347 | if (!(g_tapecatalog = malloc(sizeof(struct s_tapecatalog)))) {
|
---|
1348 | fatal_error("Cannot alloc mem for tape catalog");
|
---|
1349 | }
|
---|
1350 | g_tapecatalog->entries = 0;
|
---|
1351 | /* log stuff */
|
---|
1352 | log_it("Opening OUT cdstream with the command");
|
---|
1353 | log_it(command);
|
---|
1354 | /* log_it("Let's see what happens, shall we?"); */
|
---|
1355 | g_tape_stream = popen(command, "w");
|
---|
1356 | mr_free(command);
|
---|
1357 |
|
---|
1358 | if (g_tape_stream) {
|
---|
1359 | return (0);
|
---|
1360 | } else {
|
---|
1361 | log_to_screen("Failed to openout to cdstream (fifo)");
|
---|
1362 | return (1);
|
---|
1363 | }
|
---|
1364 | }
|
---|
1365 |
|
---|
1366 |
|
---|
1367 | /**
|
---|
1368 | * Start writing to a tape device for the backup.
|
---|
1369 | * Handle OBDR if we were asked to do so
|
---|
1370 | * @param tapedev The tape device to open for writing.
|
---|
1371 | * @return 0 for success, nonzero for failure.
|
---|
1372 | * @note This should be called ONLY from backup processes. It will OVERWRITE ANY
|
---|
1373 | * EXISTING DATA on the tape!
|
---|
1374 | */
|
---|
1375 | int openout_tape() {
|
---|
1376 |
|
---|
1377 | g_current_media_number = 1;
|
---|
1378 | if (g_tape_stream) {
|
---|
1379 | log_it("FYI - I won't 'openout' the tape. It's already open.");
|
---|
1380 | return (0);
|
---|
1381 | }
|
---|
1382 | if (bkpinfo->media_device == NULL) {
|
---|
1383 | log_it("Unable to openout NULL device");
|
---|
1384 | return(1);
|
---|
1385 | }
|
---|
1386 | g_tapecatalog = mr_malloc(sizeof(struct s_tapecatalog));
|
---|
1387 | g_tapecatalog->entries = 0;
|
---|
1388 | g_tape_posK = 0;
|
---|
1389 |
|
---|
1390 | if (bkpinfo->use_obdr) {
|
---|
1391 | create_obdr();
|
---|
1392 | } else {
|
---|
1393 | set_tape_block_size_with_mt(bkpinfo->internal_tape_block_size);
|
---|
1394 | }
|
---|
1395 | log_it("Opening OUT tape");
|
---|
1396 | if (!(g_tape_stream = open_device_via_buffer(bkpinfo->media_device, 'w', bkpinfo->internal_tape_block_size))) {
|
---|
1397 | log_OS_error(g_tape_fifo);
|
---|
1398 | log_to_screen("Cannot openin stream device");
|
---|
1399 | return (1);
|
---|
1400 | }
|
---|
1401 | return (0);
|
---|
1402 | }
|
---|
1403 |
|
---|
1404 |
|
---|
1405 | /**
|
---|
1406 | * Seek through the stream until we find a header block where the NAME field matches
|
---|
1407 | * @p the_file_I_was_reading. This is useful if you've just started reading from
|
---|
1408 | * a new tape and want to find the file you were reading when the tape ended.
|
---|
1409 | * @param the_file_I_was_reading File name to look for.
|
---|
1410 | * @return 0 for success, nonzero for failure.
|
---|
1411 | */
|
---|
1412 | int skip_incoming_files_until_we_find_this_one(char
|
---|
1413 | *the_file_I_was_reading)
|
---|
1414 | {
|
---|
1415 | char *pA;
|
---|
1416 | char *pB;
|
---|
1417 | int res;
|
---|
1418 | int ctrl_chr;
|
---|
1419 | char *temp_fname;
|
---|
1420 | char *datablock;
|
---|
1421 | long long temp_size, size;
|
---|
1422 | long bytes_to_write;
|
---|
1423 |
|
---|
1424 | datablock = malloc(TAPE_BLOCK_SIZE);
|
---|
1425 | malloc_string(temp_fname);
|
---|
1426 | pB = strrchr(the_file_I_was_reading, '/');
|
---|
1427 | if (pB) {
|
---|
1428 | pB++;
|
---|
1429 | } else {
|
---|
1430 | pB = the_file_I_was_reading;
|
---|
1431 | }
|
---|
1432 | log_msg(1, "skip_incoming_..(%s)", pB);
|
---|
1433 | log_msg(2, "Looking for initial START_AN_AFIO_OR_SLICE");
|
---|
1434 | ctrl_chr = -1;
|
---|
1435 | while (ctrl_chr != BLK_START_AN_AFIO_OR_SLICE) {
|
---|
1436 | res = read_header_block_from_stream(&temp_size, temp_fname, &ctrl_chr);
|
---|
1437 | if (res) {
|
---|
1438 | // FIXME
|
---|
1439 | }
|
---|
1440 | if (ctrl_chr == BLK_START_AN_AFIO_OR_SLICE) {
|
---|
1441 | break;
|
---|
1442 | }
|
---|
1443 | log_msg(1, "%lld %s %c", temp_size, temp_fname, ctrl_chr);
|
---|
1444 | wrong_marker(BLK_START_AN_AFIO_OR_SLICE, ctrl_chr);
|
---|
1445 | log_msg(3, "Still trying to re-sync w/ tape");
|
---|
1446 | }
|
---|
1447 | while (ctrl_chr != BLK_START_FILE) {
|
---|
1448 | res = read_header_block_from_stream(&temp_size, temp_fname, &ctrl_chr);
|
---|
1449 | if (res) {
|
---|
1450 | //FIXME
|
---|
1451 | }
|
---|
1452 | if (ctrl_chr == BLK_START_FILE) {
|
---|
1453 | break;
|
---|
1454 | }
|
---|
1455 | log_msg(1, "%lld %s %c", temp_size, temp_fname, ctrl_chr);
|
---|
1456 | wrong_marker(BLK_START_FILE, ctrl_chr);
|
---|
1457 | log_msg(3, "Still trying to re-sync w/ tape");
|
---|
1458 | }
|
---|
1459 | pA = strrchr(temp_fname, '/');
|
---|
1460 | if (pA) {
|
---|
1461 | pA++;
|
---|
1462 | } else {
|
---|
1463 | pA = temp_fname;
|
---|
1464 | }
|
---|
1465 | pB = strrchr(the_file_I_was_reading, '/');
|
---|
1466 | if (pB) {
|
---|
1467 | pB++;
|
---|
1468 | } else {
|
---|
1469 | pB = the_file_I_was_reading;
|
---|
1470 | }
|
---|
1471 | while (strcmp(pA, pB)) {
|
---|
1472 | log_msg(6, "Skipping %s (it's not %s)", temp_fname, the_file_I_was_reading);
|
---|
1473 | for (size = temp_size; size > 0; size -= bytes_to_write) {
|
---|
1474 | bytes_to_write =
|
---|
1475 | (size < TAPE_BLOCK_SIZE) ? (long) size : TAPE_BLOCK_SIZE;
|
---|
1476 | if (fread(datablock, 1, (size_t) TAPE_BLOCK_SIZE, g_tape_stream)) {
|
---|
1477 | // FIXME - needs error-checking and -catching
|
---|
1478 | }
|
---|
1479 | }
|
---|
1480 | res = read_header_block_from_stream(&temp_size, temp_fname, &ctrl_chr);
|
---|
1481 | if (ctrl_chr != BLK_STOP_FILE) {
|
---|
1482 | wrong_marker(BLK_STOP_FILE, ctrl_chr);
|
---|
1483 | }
|
---|
1484 | res = read_header_block_from_stream(&temp_size, temp_fname, &ctrl_chr);
|
---|
1485 | if (ctrl_chr != BLK_STOP_AN_AFIO_OR_SLICE) {
|
---|
1486 | wrong_marker(BLK_STOP_AN_AFIO_OR_SLICE, ctrl_chr);
|
---|
1487 | }
|
---|
1488 | res = read_header_block_from_stream(&temp_size, temp_fname, &ctrl_chr);
|
---|
1489 | if (ctrl_chr != BLK_START_AN_AFIO_OR_SLICE) {
|
---|
1490 | wrong_marker(BLK_START_AN_AFIO_OR_SLICE, ctrl_chr);
|
---|
1491 | }
|
---|
1492 | res = read_header_block_from_stream(&temp_size, temp_fname, &ctrl_chr);
|
---|
1493 | if (ctrl_chr != BLK_START_FILE) {
|
---|
1494 | wrong_marker(BLK_START_FILE, ctrl_chr);
|
---|
1495 | }
|
---|
1496 | pA = strrchr(temp_fname, '/');
|
---|
1497 | if (pA) {
|
---|
1498 | pA++;
|
---|
1499 | } else {
|
---|
1500 | pA = temp_fname;
|
---|
1501 | }
|
---|
1502 | pB = strrchr(the_file_I_was_reading, '/');
|
---|
1503 | if (pB) {
|
---|
1504 | pB++;
|
---|
1505 | } else {
|
---|
1506 | pB = the_file_I_was_reading;
|
---|
1507 | }
|
---|
1508 | }
|
---|
1509 | log_msg(2, "Reading %s (it matches %s)", temp_fname, the_file_I_was_reading);
|
---|
1510 | paranoid_free(temp_fname);
|
---|
1511 | paranoid_free(datablock);
|
---|
1512 | return (0);
|
---|
1513 | }
|
---|
1514 |
|
---|
1515 |
|
---|
1516 | /**
|
---|
1517 | * Start to read from the next tape. Assumes the user has already inserted it.
|
---|
1518 | * @param bkpinfo The backup information structure. @c bkpinfo->media_device is the only field used.
|
---|
1519 | * @return 0 for success, nonzero for failure.
|
---|
1520 | */
|
---|
1521 | int start_to_read_from_next_tape()
|
---|
1522 | {
|
---|
1523 | /*@ int ********************************************************* */
|
---|
1524 | int res = 0;
|
---|
1525 | char *sz_msg;
|
---|
1526 | int ctrlchr;
|
---|
1527 | long long temp_size;
|
---|
1528 | malloc_string(sz_msg);
|
---|
1529 | /*@ end vars *************************************************** */
|
---|
1530 |
|
---|
1531 | if (bkpinfo->media_device == NULL) {
|
---|
1532 | log_it("Unable to open in from NULL device");
|
---|
1533 | return (1);
|
---|
1534 | }
|
---|
1535 |
|
---|
1536 | paranoid_pclose(g_tape_stream);
|
---|
1537 | sync();
|
---|
1538 | sync();
|
---|
1539 | sync();
|
---|
1540 | log_it("Next tape requested.");
|
---|
1541 | insist_on_this_tape_number(g_current_media_number + 1); // will increment it, too
|
---|
1542 | log_it("Opening IN the next tape");
|
---|
1543 | if (!(g_tape_stream = open_device_via_buffer(bkpinfo->media_device, 'r', bkpinfo->internal_tape_block_size))) {
|
---|
1544 | log_OS_error(g_tape_fifo);
|
---|
1545 | log_to_screen("Cannot openin stream device");
|
---|
1546 | return (1);
|
---|
1547 | }
|
---|
1548 | g_tape_posK = 0;
|
---|
1549 | g_sigpipe = FALSE;
|
---|
1550 | res += read_header_block_from_stream(&temp_size, sz_msg, &ctrlchr); /* just in case */
|
---|
1551 | if (ctrlchr != BLK_START_OF_TAPE) {
|
---|
1552 | wrong_marker(BLK_START_OF_TAPE, ctrlchr);
|
---|
1553 | }
|
---|
1554 | res += read_header_block_from_stream(&temp_size, sz_msg, &ctrlchr); /* just in case */
|
---|
1555 | if (ctrlchr != BLK_START_OF_BACKUP) {
|
---|
1556 | wrong_marker(BLK_START_OF_BACKUP, ctrlchr);
|
---|
1557 | } else {
|
---|
1558 | log_msg(3, "Next tape opened OK. Whoopee!");
|
---|
1559 | }
|
---|
1560 | paranoid_free(sz_msg);
|
---|
1561 | return (res);
|
---|
1562 | }
|
---|
1563 |
|
---|
1564 |
|
---|
1565 |
|
---|
1566 | /**
|
---|
1567 | * Copy a file from the currently opened stream (CD or tape) to the stream indicated
|
---|
1568 | * by @p fout.
|
---|
1569 | * @param bkpinfo The backup information structure. @c bkpinfo->media_size is the only field used.
|
---|
1570 | * @param fout The stream to write the file to.
|
---|
1571 | * @param size The size of the file in bytes.
|
---|
1572 | * @return 0 for success, nonzero for failure.
|
---|
1573 | */
|
---|
1574 | int
|
---|
1575 | read_file_from_stream_to_stream(FILE * fout, long long size)
|
---|
1576 | {
|
---|
1577 |
|
---|
1578 | /*@ int ******************************************************** */
|
---|
1579 | int res;
|
---|
1580 |
|
---|
1581 | /*@ end vars *************************************************** */
|
---|
1582 |
|
---|
1583 | res = read_file_from_stream_FULL(NULL, fout, size);
|
---|
1584 | /* fflush(g_tape_stream);
|
---|
1585 | fflush(fout);*/
|
---|
1586 | return (res);
|
---|
1587 | }
|
---|
1588 |
|
---|
1589 |
|
---|
1590 | /**
|
---|
1591 | * Add specified file/slice to the internal catalog of all archives written.
|
---|
1592 | * This lets us restart on a new CD/tape/whatever if it runs out of room. We just
|
---|
1593 | * write the last [buffer size] MB from the catalog to the new tape, so we know
|
---|
1594 | * we have @e all archives on some CD/tape/whatever.
|
---|
1595 | * @param type The type of file we're cataloging (afioball, slice, something else)
|
---|
1596 | * @param number The fileset number or biggiefile number.
|
---|
1597 | * @param aux The slice number if it's a biggiefile, or any other additional info.
|
---|
1598 | * @param fn The original full pathname of the file we're recording.
|
---|
1599 | * @return The index of the record we just added.
|
---|
1600 | */
|
---|
1601 | int register_in_tape_catalog(t_archtype type, int number, long aux,
|
---|
1602 | char *fn)
|
---|
1603 | {
|
---|
1604 | int last;
|
---|
1605 | char fname[MAX_TAPECAT_FNAME_LEN+1];
|
---|
1606 | char *p;
|
---|
1607 |
|
---|
1608 | p = strrchr(fn, '/');
|
---|
1609 | if (p) {
|
---|
1610 | p++;
|
---|
1611 | } else {
|
---|
1612 | p = fn;
|
---|
1613 | }
|
---|
1614 | strncpy(fname, p, MAX_TAPECAT_FNAME_LEN);
|
---|
1615 | fname[MAX_TAPECAT_FNAME_LEN] = '\0';
|
---|
1616 | last = g_tapecatalog->entries;
|
---|
1617 | if (last >= MAX_TAPECATALOG_ENTRIES) {
|
---|
1618 | log_it
|
---|
1619 | ("Warning - can't log #%d in tape catalog - too many entries already",
|
---|
1620 | number);
|
---|
1621 | return (-1);
|
---|
1622 | }
|
---|
1623 | g_tapecatalog->el[last].type = type;
|
---|
1624 | g_tapecatalog->el[last].number = number;
|
---|
1625 | g_tapecatalog->el[last].aux = aux;
|
---|
1626 | g_tapecatalog->el[last].tape_posK = g_tape_posK;
|
---|
1627 | strcpy(g_tapecatalog->el[last].fname, fname);
|
---|
1628 | g_tapecatalog->entries++;
|
---|
1629 | return (last); // returns the index of the record we've jsut added
|
---|
1630 | }
|
---|
1631 |
|
---|
1632 |
|
---|
1633 |
|
---|
1634 |
|
---|
1635 | /**
|
---|
1636 | * Write a bufferfull of the most recent archives to the tape. The
|
---|
1637 | * rationale behind this is a bit complex. If the previous tape ended
|
---|
1638 | * suddenly (EOF or otherwise) some archives were probably left in the
|
---|
1639 | * buffer. That means that Mondo thinks they have been written, but
|
---|
1640 | * the external binary @c buffer has not actually written them. So to
|
---|
1641 | * be safe, we start the new tape by writing the last bufferfull from
|
---|
1642 | * the old one. This insures that all archives will be on at least
|
---|
1643 | * one tape. Sounds inelegant, but it works.
|
---|
1644 | * @param bkpinfo The backup information structure. @c bkpinfo->tmpdir is the only field used.
|
---|
1645 | * @return 0 for success, nonzero for failure.
|
---|
1646 | */
|
---|
1647 | int write_backcatalog_to_tape()
|
---|
1648 | {
|
---|
1649 | int i, last, res = 0;
|
---|
1650 | char *fname = NULL;
|
---|
1651 |
|
---|
1652 | log_msg(2, "I am now writing back catalog to tape");
|
---|
1653 | last = g_tapecatalog->entries - 1;
|
---|
1654 | for (i = 0; i <= last; i++) {
|
---|
1655 | mr_asprintf(fname, "%s/tmpfs/backcatalog/%s", bkpinfo->tmpdir, g_tapecatalog->el[i].fname);
|
---|
1656 | if (!does_file_exist(fname)) {
|
---|
1657 | log_msg(6, "Can't write %s - it doesn't exist.", fname);
|
---|
1658 | } else {
|
---|
1659 | write_header_block_to_stream(length_of_file(fname), "start-backcatalog-afio-or-slice", BLK_START_AN_AFIO_OR_SLICE);
|
---|
1660 | log_msg(2, "Writing %s", fname);
|
---|
1661 | if (write_file_to_stream_from_file(fname)) {
|
---|
1662 | res++;
|
---|
1663 | log_msg(2, "%s failed", fname);
|
---|
1664 | }
|
---|
1665 | if (i != last) {
|
---|
1666 | write_header_block_to_stream((off_t)0, "stop-backcatalog-afio-or-slice", BLK_STOP_AN_AFIO_OR_SLICE);
|
---|
1667 | }
|
---|
1668 | }
|
---|
1669 | mr_free(fname);
|
---|
1670 | }
|
---|
1671 | log_msg(2, "Finished writing back catalog to tape");
|
---|
1672 | return (res);
|
---|
1673 | }
|
---|
1674 |
|
---|
1675 |
|
---|
1676 |
|
---|
1677 | /**
|
---|
1678 | * Write all.tar.gz (produced by Mindi) to the first 32M of the first tape.
|
---|
1679 | * @param fname The path to all.tar.gz.
|
---|
1680 | * @return 0 for success, nonzero for failure.
|
---|
1681 | */
|
---|
1682 | int write_data_disks_to_stream(char *fname)
|
---|
1683 | {
|
---|
1684 | /*@ pointers *************************************************** */
|
---|
1685 | FILE *fin;
|
---|
1686 |
|
---|
1687 | /*@ long ******************************************************* */
|
---|
1688 | long m = -1;
|
---|
1689 | long templong;
|
---|
1690 |
|
---|
1691 | /*@ int ******************************************************** */
|
---|
1692 | int i, j;
|
---|
1693 |
|
---|
1694 | /*@ buffers **************************************************** */
|
---|
1695 | char tempblock[256 * 1024];
|
---|
1696 |
|
---|
1697 | /*@ end vars *************************************************** */
|
---|
1698 |
|
---|
1699 | open_evalcall_form("Writing data disks to tape");
|
---|
1700 | log_to_screen("Writing data disks to tape");
|
---|
1701 | log_it("Data disks = %s", fname);
|
---|
1702 | if (!does_file_exist(fname)) {
|
---|
1703 | log_to_screen("Cannot find %s", fname);
|
---|
1704 | return (1);
|
---|
1705 | }
|
---|
1706 | if (!(fin = fopen(fname, "r"))) {
|
---|
1707 | log_OS_error(fname);
|
---|
1708 | fatal_error("Cannot openin the data disk");
|
---|
1709 | }
|
---|
1710 | for (i = 0; i < 32; i++) { /* 32MB */
|
---|
1711 | for (j = 0; j < 4; j++) { /* 256K x 4 = 1MB (1024K) */
|
---|
1712 | if (!feof(fin)) {
|
---|
1713 | m = (long) fread(tempblock, 1, 256 * 1024, fin);
|
---|
1714 | } else {
|
---|
1715 | m = 0;
|
---|
1716 | }
|
---|
1717 | for (; m < 256 * 1024; m++) {
|
---|
1718 | tempblock[m] = '\0';
|
---|
1719 | }
|
---|
1720 | g_tape_posK +=
|
---|
1721 | fwrite(tempblock, 1, 256 * 1024, g_tape_stream) / 1024;
|
---|
1722 | }
|
---|
1723 | if (i > g_tape_buffer_size_MB) // otherwise, 'buffer' distorts calculations
|
---|
1724 | {
|
---|
1725 | templong = ((i - 8) * 4 + j) * 100 / (128 - 8 * 4);
|
---|
1726 | update_evalcall_form((int) (templong));
|
---|
1727 | }
|
---|
1728 | }
|
---|
1729 | paranoid_fclose(fin);
|
---|
1730 | close_evalcall_form();
|
---|
1731 | return (0);
|
---|
1732 | }
|
---|
1733 |
|
---|
1734 |
|
---|
1735 |
|
---|
1736 |
|
---|
1737 | /* @} - end of streamGroup */
|
---|