1 | /* $Id: libmondo-stream.c 1424 2007-05-09 09:25:19Z bruno $
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2 |
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3 | ...tools for talking to tapes, Monitas streams, etc.
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4 | */
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5 |
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6 | /*
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7 | *
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8 | * @file
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9 | * Functions for writing data to/reading data from streams (tape, CD stream, etc.)
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10 | */
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11 |
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12 | #include <unistd.h>
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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_msg.h"
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17 | #include "mr_list.h"
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18 |
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19 | #include "mondostructures.h"
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20 | #include "libmondo-devices.h"
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21 | #include "libmondo-stream.h"
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22 | #include "libmondo-string-EXT.h"
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23 | #include "libmondo-files-EXT.h"
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24 | #include "newt-specific-EXT.h"
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25 | #include "libmondo-fork-EXT.h"
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26 | #include "libmondo-tools-EXT.h"
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27 | #include "libmondo-fifo-EXT.h"
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28 |
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29 | #define EXTRA_TAPE_CHECKSUMS
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30 |
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31 | /*@unused@*/
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32 | //static char cvsid[] = "$Id: libmondo-stream.c 1424 2007-05-09 09:25:19Z 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 | /**
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41 | * @addtogroup globalGroup
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42 | * @{
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43 | */
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44 | /**
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45 | * The file pointer for the opened tape/CD stream.
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46 | * Opened and closed by openin_tape(), openin_cdstream(),
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47 | * openout_tape(), openout_cdstream(), closein_tape(), closein_cdstream(),
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48 | * closeout_tape(), and closeout_cdstream().
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49 | */
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50 | FILE *g_tape_stream = NULL;
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51 |
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52 |
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53 | /**
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54 | * The position (in kilobytes) where we are on the tape.
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55 | */
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56 | long long g_tape_posK = 0;
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57 |
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58 | /**
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59 | * The current media number we're using. This value is 1-based.
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60 | */
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61 | int g_current_media_number = -1;
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62 |
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63 | /**
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64 | * An entry in the tape catalog.
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65 | */
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66 | struct s_tapecat_entry {
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67 | /**
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68 | * The type of archive it is (afioball, slice, or something else).
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69 | */
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70 | t_archtype type;
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71 |
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72 | /**
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73 | * The filelist number or biggiefile (not slice!) number.
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74 | */
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75 | int number;
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76 |
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77 | /**
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78 | * The slice number if it's a biggiefile.
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79 | */
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80 | long aux;
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81 |
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82 | /**
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83 | * The tape position at the point this entry was added.
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84 | */
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85 | long long tape_posK;
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86 |
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87 | /**
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88 | * The filename of the file cataloged here.
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89 | */
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90 | char *fname;
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91 | };
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92 |
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93 |
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94 | /*
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95 | * The tape catalog that keeps track of files written to tape.
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96 | * made of a list of @p s_tapecat_entry.
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97 | * */
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98 | static struct mr_list *tapecatalog;
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99 |
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100 | /* function to free the fname field allocated in te */
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101 | static void mr_free_te(void *data) {
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102 |
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103 | struct s_tapecat_entry *te = NULL;
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104 |
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105 | te = (struct s_tapecat_entry *)data;
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106 | mr_free(te->fname);
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107 | }
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108 |
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109 | /* @} - end of globalGroup */
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110 |
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111 | int write_backcatalog_to_tape(struct s_bkpinfo *bkpinfo);
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112 |
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113 |
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114 | /**
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115 | * @addtogroup streamGroup
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116 | * @{
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117 | */
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118 | /**
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119 | * Close the global output file descriptor which Mondo has used to read
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120 | * from the CD stream.
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121 | * @param bkpinfo The backup information structure. Passed directly to closein_tape().
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122 | * @return 0 for success, nonzero for failure.
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123 | * @note This should be called by restore processes only.
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124 | */
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125 | int closein_cdstream(struct s_bkpinfo *bkpinfo)
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126 | {
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127 | return (closein_tape(bkpinfo));
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128 | }
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129 |
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130 |
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131 | /**
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132 | * Close the global output file descriptor which Mondo has used to read
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133 | * from buffer or dd, which read from the tape.
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134 | * @param bkpinfo The backup information structure. Unused.
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135 | * @return 0 for success, nonzero for failure.
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136 | * @note This should be called by restore processes only.
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137 | * @note This function also works for cdstreams for now, but don't count on this behavior.
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138 | * @bug @p bkpinfo parameter is unused.
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139 | */
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140 | int closein_tape(struct s_bkpinfo *bkpinfo)
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141 | {
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142 | /*@ int's ******************************************************* */
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143 | int retval = 0;
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144 | int res = 0;
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145 | int ctrl_chr = '\0';
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146 |
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147 | /*@ buffers ***************************************************** */
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148 | char fname[MAX_STR_LEN];
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149 |
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150 | /*@ long long's ************************************************* */
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151 | long long size;
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152 | char *blk;
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153 | int i;
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154 |
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155 | blk = (char *) mr_malloc(256 * 1024);
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156 |
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157 | log_it("closein_tape() -- entering");
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158 | res = read_header_block_from_stream(&size, fname, &ctrl_chr);
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159 | retval += res;
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160 | if (ctrl_chr != BLK_END_OF_BACKUP) {
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161 | wrong_marker(BLK_END_OF_BACKUP, ctrl_chr);
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162 | }
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163 | res = read_header_block_from_stream(&size, fname, &ctrl_chr);
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164 | retval += res;
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165 | if (ctrl_chr != BLK_END_OF_TAPE) {
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166 | wrong_marker(BLK_END_OF_TAPE, ctrl_chr);
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167 | }
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168 | for (i = 0; i < 8 && !feof(g_tape_stream); i++) {
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169 | (void) fread(blk, 1, 256 * 1024, g_tape_stream);
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170 | }
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171 | sleep(1);
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172 | sync();
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173 | sleep(1);
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174 | paranoid_pclose(g_tape_stream);
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175 | log_it("closein_tape() -- leaving");
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176 | if (!bkpinfo->please_dont_eject) {
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177 | eject_device(bkpinfo->media_device);
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178 | }
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179 | mr_free(blk);
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180 | mr_list_free(tapecatalog);
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181 | return (retval);
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182 | }
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183 |
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184 |
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185 |
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186 | /**
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187 | * Close the global output file descriptor which Mondo has been using to write
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188 | * to the tape device (via buffer or dd).
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189 | * @param bkpinfo The backup information structure. @c bkpinfo->media_size is the only field used.
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190 | * @return 0 for success, nonzero for failure.
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191 | * @note This should be called by backup processes only.
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192 | */
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193 | int closeout_tape(struct s_bkpinfo *bkpinfo)
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194 | {
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195 | /*@ int's ******************************************************* */
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196 | int retval = 0;
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197 |
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198 | /*@ long long's ************************************************* */
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199 | int i = 0;
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200 | char *blk = NULL;
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201 | struct mr_list_elt *elt = NULL;
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202 | struct s_tapecat_entry *te = NULL;
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203 |
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204 | blk = (char *) mr_malloc(256 * 1024);
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205 |
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206 | sleep(1);
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207 | sync();
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208 | sleep(1);
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209 | log_it("closeout_tape() -- entering");
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210 | retval +=
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211 | write_header_block_to_stream((off_t)0, "end-of-backup",
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212 | BLK_END_OF_BACKUP);
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213 | retval += write_header_block_to_stream((off_t)0, "end-of-tape", BLK_END_OF_TAPE); /* just in case */
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214 | /* write 1MB of crap */
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215 | for (i = 0; i < 256 * 1024; i++) {
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216 | blk[i] = (int) (random() & 0xFF);
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217 | }
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218 | for (i = 0; i < 4 * 8; i++) {
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219 | (void) fwrite(blk, 1, 256 * 1024, g_tape_stream);
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220 | if (should_we_write_to_next_tape
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221 | (bkpinfo->media_size, (off_t)256 * 1024)) {
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222 | start_to_write_to_next_tape(bkpinfo);
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223 | }
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224 | }
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225 | sleep(2);
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226 | paranoid_pclose(g_tape_stream);
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227 | log_it("closeout_tape() -- leaving");
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228 | elt = tapecatalog->first;
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229 | while (elt != NULL) {
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230 | te = (struct s_tapecat_entry *)elt->data;
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231 | log_it("i=%d type=%s num=%d aux=%ld posK=%lld", i,
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232 | (te->type == fileset) ? "fileset" : "bigslice",
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233 | te->number, te->aux, te->tape_posK);
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234 | i++;
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235 | elt = elt->next;
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236 | }
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237 | mr_free(blk);
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238 | mr_list_free(tapecatalog);
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239 | return (retval);
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240 | }
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241 |
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242 |
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243 |
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244 | bool mt_says_tape_exists(char *dev)
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245 | {
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246 | char *command;
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247 | int res;
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248 |
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249 | mr_asprintf(&command, "mt -f %s status", dev);
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250 | res = run_program_and_log_output(command, 1);
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251 | mr_free(command);
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252 | if (res) {
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253 | return (FALSE);
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254 | } else {
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255 | return (TRUE);
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256 | }
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257 | }
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258 |
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259 |
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260 |
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261 | /**
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262 | * Determine the name and size of the tape device. Tries the SCSI tape for
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263 | * this platform, then the IDE tape, then "/dev/st0", then "/dev/osst0".
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264 | * @param dev Where to put the found tape device.
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265 | * @param siz Where to put the tape size (a string like "4GB")
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266 | * @return 0 if success, nonzero if failure (in which @p dev and @p siz are undefined).
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267 | */
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268 | int find_tape_device_and_size(char *dev, char *siz)
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269 | {
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270 | char tmp[MAX_STR_LEN];
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271 | char *command = NULL;
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272 | char cdr_exe[MAX_STR_LEN];
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273 | int res;
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274 |
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275 | log_to_screen("I am looking for your tape streamer. Please wait.");
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276 | dev[0] = siz[0] = '\0';
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277 | if (find_home_of_exe("cdrecord")) {
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278 | strcpy(cdr_exe, "cdrecord");
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279 | } else {
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280 | strcpy(cdr_exe, "dvdrecord");
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281 | }
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282 | mr_asprintf(&command, "%s -scanbus 2> /dev/null | grep -i tape | wc -l",
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283 | cdr_exe);
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284 | strcpy(tmp, call_program_and_get_last_line_of_output(command));
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285 | mr_free(command);
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286 | if (atoi(tmp) != 1) {
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287 | log_it
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288 | ("Either too few or too many tape streamers for me to detect...");
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289 | strcpy(dev, VANILLA_SCSI_TAPE);
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290 | return 1;
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291 | }
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292 | mr_asprintf(&command,
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293 | "%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",
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294 | cdr_exe);
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295 | strcpy(tmp, call_program_and_get_last_line_of_output(command));
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296 | mr_free(command);
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297 | if (strlen(tmp) < 2) {
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298 | log_it("Could not find tape device");
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299 | return 1;
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300 | }
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301 | mr_asprintf(&command,
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302 | "%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",
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303 | cdr_exe);
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304 | strcpy(tmp, call_program_and_get_last_line_of_output(command));
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305 | mr_free(command);
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306 |
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307 | strcpy(dev, VANILLA_SCSI_TAPE);
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308 | dev[strlen(dev) - 1] = '\0';
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309 | strcat(dev, tmp); // e.g. '/dev/st0' becomes '/dev/stN'
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310 | res = 0;
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311 | if (!mt_says_tape_exists(dev)) {
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312 | strcpy(dev, ALT_TAPE);
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313 | if (!mt_says_tape_exists(dev)) {
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314 | log_it("Cannot openin %s", dev);
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315 | strcpy(dev, "/dev/st0");
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316 | if (!mt_says_tape_exists(dev)) {
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317 | log_it("Cannot openin %s", dev);
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318 | strcpy(dev, "/dev/osst0");
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319 | if (!mt_says_tape_exists(dev)) {
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320 | res++;
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321 | } else {
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322 | res = 0;
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323 | }
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324 | }
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325 | }
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326 | }
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327 |
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328 | log_it("At this point, dev = %s and res = %d", dev, res);
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329 |
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330 | strcpy(tmp, call_program_and_get_last_line_of_output("\
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331 | cdrecord -scanbus 2> /dev/null | tr -s '\t' ' ' | \
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332 | grep \"[0-9]*,[0-9]*,[0-9]*\" | grep -v \"[0-9]*) \\*\" | grep -i TAPE | \
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333 | awk '{for(i=1; i<NF; i++) { if (index($i, \"GB\")>0) { print $i;};};};'"));
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334 |
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335 | if (mt_says_tape_exists(dev)) {
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336 | res = 0;
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337 | } else {
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338 | log_it("Turning %s", dev);
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339 | strcpy(tmp, (strrchr(dev, '/') != NULL) ? strrchr(dev, '/') : dev);
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340 | sprintf(dev, "/dev/os%s", tmp);
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341 | log_it("...into %s", dev);
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342 | if (mt_says_tape_exists(dev)) {
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343 | res = 0;
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344 | } else {
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345 | res++;
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346 | }
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347 | }
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348 |
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349 | siz[0] = '\0';
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350 | log_it("res=%d; dev=%s", res, dev);
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351 |
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352 | if (res) {
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353 | return (res);
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354 | }
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355 |
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356 | if (strlen(tmp) < 2) {
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357 | siz[0] = '\0';
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358 | log_it("Warning - size of tape unknown");
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359 | return (0);
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360 | } else {
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361 | strcpy(siz, tmp);
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362 | return (0);
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363 | }
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364 | }
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365 |
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366 |
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367 | int read_EXAT_files_from_tape(struct s_bkpinfo *bkpinfo,
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368 | long long *ptmp_size, char *tmp_fname,
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369 | int *pctrl_chr, char *xattr_fname,
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370 | char *acl_fname)
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371 | {
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372 | int res = 0;
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373 | int retval = 0;
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374 | char *fname = (char *)&res; /* Should NOT be NULL */
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375 |
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376 | // xattr
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377 | if (g_getfattr) {
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378 | res = read_header_block_from_stream(ptmp_size, fname, pctrl_chr);
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379 | if (*pctrl_chr != BLK_START_EXAT_FILE) {
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380 | wrong_marker(BLK_START_EXAT_FILE, *pctrl_chr);
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381 | }
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382 | if (!strstr(fname, "xattr")) {
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383 | fatal_error("Wrong order, sunshine.");
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384 | }
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385 | read_file_from_stream_to_file(bkpinfo, xattr_fname, *ptmp_size);
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386 | res = read_header_block_from_stream(ptmp_size, tmp_fname, pctrl_chr);
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387 | if (*pctrl_chr != BLK_STOP_EXAT_FILE) {
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388 | wrong_marker(BLK_STOP_EXAT_FILE, *pctrl_chr);
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389 | }
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390 | mr_msg(1, "Got xattr");
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391 | }
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392 | // acl
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393 | if (g_getfacl) {
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394 | res = read_header_block_from_stream(ptmp_size, fname, pctrl_chr);
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395 | if (!strstr(fname, "acl")) {
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396 | fatal_error("Wrong order, sunshine.");
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397 | }
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398 | if (*pctrl_chr != BLK_START_EXAT_FILE) {
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399 | wrong_marker(BLK_START_EXAT_FILE, *pctrl_chr);
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400 | }
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401 | read_file_from_stream_to_file(bkpinfo, acl_fname, *ptmp_size);
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402 | res = read_header_block_from_stream(ptmp_size, tmp_fname, pctrl_chr);
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403 | if (*pctrl_chr != BLK_STOP_EXAT_FILE) {
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404 | wrong_marker(BLK_STOP_EXAT_FILE, *pctrl_chr);
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405 | }
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406 | res = read_header_block_from_stream(ptmp_size, tmp_fname, pctrl_chr);
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407 | if (*pctrl_chr != BLK_STOP_EXTENDED_ATTRIBUTES) {
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408 | wrong_marker(BLK_STOP_EXTENDED_ATTRIBUTES, *pctrl_chr);
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409 | }
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410 | mr_msg(1, "Got acl");
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411 | }
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412 | // tarball itself
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413 | res = read_header_block_from_stream(ptmp_size, tmp_fname, pctrl_chr);
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414 | mr_msg(1, "now looking for afioball");
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415 | return (retval);
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416 | }
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417 |
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418 |
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419 | int write_EXAT_files_to_tape(struct s_bkpinfo *bkpinfo, char *xattr_fname,
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420 | char *acl_fname)
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421 | {
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422 | int res = 0;
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423 | if (g_getfattr) {
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424 | // xattr
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425 | write_header_block_to_stream(length_of_file(xattr_fname), xattr_fname,
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426 | BLK_START_EXTENDED_ATTRIBUTES);
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427 | write_header_block_to_stream(length_of_file(xattr_fname), xattr_fname,
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428 | BLK_START_EXAT_FILE);
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429 | write_file_to_stream_from_file(bkpinfo, xattr_fname);
|
---|
430 | write_header_block_to_stream((off_t)-1, xattr_fname, BLK_STOP_EXAT_FILE);
|
---|
431 | }
|
---|
432 | if (g_getfacl) {
|
---|
433 | // acl
|
---|
434 | write_header_block_to_stream(length_of_file(acl_fname), acl_fname,
|
---|
435 | BLK_START_EXAT_FILE);
|
---|
436 | write_file_to_stream_from_file(bkpinfo, acl_fname);
|
---|
437 | write_header_block_to_stream((off_t)-1, acl_fname, BLK_STOP_EXAT_FILE);
|
---|
438 | write_header_block_to_stream(length_of_file(xattr_fname), xattr_fname,
|
---|
439 | BLK_STOP_EXTENDED_ATTRIBUTES);
|
---|
440 | }
|
---|
441 | return (res);
|
---|
442 | }
|
---|
443 |
|
---|
444 |
|
---|
445 |
|
---|
446 |
|
---|
447 | /**
|
---|
448 | * Tell the user to insert tape @p tapeno and wait for it to settle (5 seconds).
|
---|
449 | * @param tapeno The tape number to insist on.
|
---|
450 | * @bug There is currently no way to actually verify that the user has actually
|
---|
451 | * inserted the right tape.
|
---|
452 | */
|
---|
453 | void insist_on_this_tape_number(int tapeno)
|
---|
454 | {
|
---|
455 | int i;
|
---|
456 | char *tmp = NULL;
|
---|
457 |
|
---|
458 | log_it("Insisting on tape #%d", tapeno);
|
---|
459 | if (g_current_media_number != tapeno) {
|
---|
460 | // log_it("g_current_media_number = %d", g_current_media_number);
|
---|
461 | mr_asprintf(&tmp,
|
---|
462 | _("When the tape drive goes quiet, please insert volume %d in this series."),
|
---|
463 | tapeno);
|
---|
464 | popup_and_OK(tmp);
|
---|
465 | mr_free(tmp);
|
---|
466 | open_evalcall_form(_("Waiting while the tape drive settles"));
|
---|
467 | } else {
|
---|
468 | open_evalcall_form(_("Waiting while the tape drive rewinds"));
|
---|
469 | }
|
---|
470 |
|
---|
471 | for (i = 0; i <= 100; i += 2) {
|
---|
472 | usleep(100000);
|
---|
473 | update_evalcall_form(i);
|
---|
474 | }
|
---|
475 | close_evalcall_form();
|
---|
476 | log_it("I assume user has inserted it. They _say_ they have...");
|
---|
477 | g_current_media_number = tapeno;
|
---|
478 |
|
---|
479 | // log_it("g_current_media_number = %d", g_current_media_number);
|
---|
480 | log_it("OK, I've finished insisting. On with the revelry.");
|
---|
481 | }
|
---|
482 |
|
---|
483 |
|
---|
484 | /**
|
---|
485 | * Debugging aid - log the offset we're at on the tape (reading or writing).
|
---|
486 | */
|
---|
487 | void log_tape_pos(void)
|
---|
488 | {
|
---|
489 | log_it("Tape position -- %ld KB (%ld MB)", (long) g_tape_posK,
|
---|
490 | (long) g_tape_posK >> 10);
|
---|
491 | }
|
---|
492 |
|
---|
493 |
|
---|
494 | /**
|
---|
495 | * Add a file to a collection of recently archived filesets/slices.
|
---|
496 | * The type is determined by the filename: if it contains ".afio." it is
|
---|
497 | * assumed to be a fileset, otherwise if it contains "slice" it's a slice,
|
---|
498 | * otherwise we generate a fatal_error().
|
---|
499 | * @param td The current @c bkpinfo->tempdir (file will be placed in <tt>td</tt>/tmpfs/backcatalog/).
|
---|
500 | * @param latest_fname The file to place in the collection.
|
---|
501 | * @return 0, always.
|
---|
502 | * @bug Return value is redundant.
|
---|
503 | * @bug The detection won't work for uncompressed afioballs (they end in ".afio", no dot afterwards). // Not true. They end in '.' -Hugo
|
---|
504 | */
|
---|
505 | int maintain_collection_of_recent_archives(char *td, char *latest_fname)
|
---|
506 | {
|
---|
507 | long long final_alleged_writeK, final_projected_certain_writeK,
|
---|
508 | final_actually_certain_writeK = 0, cposK, bufsize_K;
|
---|
509 | int last = 0;
|
---|
510 | int i = 0;
|
---|
511 | t_archtype type = other;
|
---|
512 | char *command = NULL;
|
---|
513 | char *tmpdir = NULL;
|
---|
514 | char *old_fname = NULL;
|
---|
515 | struct mr_list_elt *elt = NULL;
|
---|
516 | struct s_tapecat_entry *te = NULL;
|
---|
517 |
|
---|
518 | bufsize_K = (long long) (1024LL * (1 + g_tape_buffer_size_MB));
|
---|
519 | if (strstr(latest_fname, ".afio.") || strstr(latest_fname, ".star.")) {
|
---|
520 | type = fileset;
|
---|
521 | } else if (strstr(latest_fname, "slice")) {
|
---|
522 | type = biggieslice;
|
---|
523 | } else {
|
---|
524 | log_it("fname = %s", latest_fname);
|
---|
525 | fatal_error
|
---|
526 | ("Unknown type. Internal error in maintain_collection_of_recent_archives()");
|
---|
527 | }
|
---|
528 |
|
---|
529 | mr_asprintf(&tmpdir, "%s/tmpfs/backcatalog", td);
|
---|
530 | mkdir(tmpdir, 0x700);
|
---|
531 | mr_asprintf(&command, "cp -f %s %s", latest_fname, tmpdir);
|
---|
532 | if (run_program_and_log_output(command, 6)) {
|
---|
533 | log_it("Warning - failed to copy %s to backcatalog at %s",
|
---|
534 | latest_fname, tmpdir);
|
---|
535 | }
|
---|
536 | mr_free(command);
|
---|
537 |
|
---|
538 | last = mr_list_length(tapecatalog) - 1;
|
---|
539 | if (last <= 0) {
|
---|
540 | iamhere("Too early to start deleting from collection.");
|
---|
541 | return (0);
|
---|
542 | }
|
---|
543 | elt = tapecatalog->last;
|
---|
544 | te = (struct s_tapecat_entry *)elt->data;
|
---|
545 | final_alleged_writeK = te->tape_posK;
|
---|
546 | final_projected_certain_writeK = final_alleged_writeK - bufsize_K;
|
---|
547 | while (elt != NULL) {
|
---|
548 | te = (struct s_tapecat_entry *)elt->data;
|
---|
549 | cposK = te->tape_posK;
|
---|
550 | if (cposK < final_projected_certain_writeK) {
|
---|
551 | final_actually_certain_writeK = cposK;
|
---|
552 | break;
|
---|
553 | }
|
---|
554 | elt = elt->prev;
|
---|
555 | }
|
---|
556 | if (elt == NULL) {
|
---|
557 | iamhere
|
---|
558 | ("Not far enough into tape to start deleting old archives from collection.");
|
---|
559 | return (0);
|
---|
560 | }
|
---|
561 |
|
---|
562 | elt = elt->prev;
|
---|
563 | i = 0;
|
---|
564 | while ((elt != NULL) && (i < 10)) {
|
---|
565 | te = (struct s_tapecat_entry *)elt->data;
|
---|
566 | mr_asprintf(&old_fname, "%s/%s", tmpdir, te->fname);
|
---|
567 | unlink(old_fname);
|
---|
568 | mr_free(old_fname);
|
---|
569 | elt = elt->prev;
|
---|
570 | i++;
|
---|
571 | }
|
---|
572 | mr_free(tmpdir);
|
---|
573 | return (0);
|
---|
574 | }
|
---|
575 |
|
---|
576 |
|
---|
577 | /**
|
---|
578 | * Open the CD stream for input.
|
---|
579 | * @param bkpinfo The backup information structure. Passed to openin_tape().
|
---|
580 | * @return 0 for success, nonzero for failure.
|
---|
581 | * @note Equivalent to openin_tape() for now, but don't count on this behavior.
|
---|
582 | */
|
---|
583 | int openin_cdstream(struct s_bkpinfo *bkpinfo)
|
---|
584 | {
|
---|
585 | return (openin_tape(bkpinfo));
|
---|
586 | }
|
---|
587 |
|
---|
588 |
|
---|
589 | int set_tape_block_size_with_mt(char *tapedev,
|
---|
590 | long internal_tape_block_size)
|
---|
591 | {
|
---|
592 | char *tmp;
|
---|
593 | int res;
|
---|
594 |
|
---|
595 | if (strncmp(tapedev, "/dev/", 5)) {
|
---|
596 | mr_msg(1,
|
---|
597 | "Not using 'mt setblk'. This isn't an actual /dev entry.");
|
---|
598 | return (0);
|
---|
599 | }
|
---|
600 | mr_asprintf(&tmp, "mt -f %s setblk %ld", tapedev,
|
---|
601 | internal_tape_block_size);
|
---|
602 | res = run_program_and_log_output(tmp, 3);
|
---|
603 | mr_free(tmp);
|
---|
604 | return (res);
|
---|
605 | }
|
---|
606 |
|
---|
607 |
|
---|
608 | /**
|
---|
609 | * Open the tape device for input.
|
---|
610 | * @param bkpinfo The backup information structure. Fields used:
|
---|
611 | * - @c bkpinfo->media_device
|
---|
612 | * - @c bkpinfo->tmpdir
|
---|
613 | * @return 0 for success, nonzero for failure.
|
---|
614 | * @note This will also work with a cdstream for now, but don't count on this behavior.
|
---|
615 | */
|
---|
616 | int openin_tape(struct s_bkpinfo *bkpinfo)
|
---|
617 | {
|
---|
618 | /*@ buffer ***************************************************** */
|
---|
619 | char fname[MAX_STR_LEN];
|
---|
620 | char *datablock = NULL;
|
---|
621 | char *tmp = NULL;
|
---|
622 | char old_cwd[MAX_STR_LEN];
|
---|
623 | char *outfname = NULL;
|
---|
624 | /*@ int ******************************************************* */
|
---|
625 | int i;
|
---|
626 | int j;
|
---|
627 | int res;
|
---|
628 | long length, templong;
|
---|
629 | size_t k;
|
---|
630 | int retval = 0;
|
---|
631 | int ctrl_chr;
|
---|
632 |
|
---|
633 | /*@ long long ************************************************* */
|
---|
634 | long long size;
|
---|
635 |
|
---|
636 | /*@ pointers ************************************************** */
|
---|
637 | FILE *fout;
|
---|
638 |
|
---|
639 | /*@ end vars *************************************************** */
|
---|
640 |
|
---|
641 | assert_string_is_neither_NULL_nor_zerolength(bkpinfo->media_device);
|
---|
642 | tapecatalog = mr_list_alloc();
|
---|
643 | g_tape_posK = 0;
|
---|
644 | if (g_tape_stream) {
|
---|
645 | log_it("FYI - I won't 'openin' the tape. It's already open.");
|
---|
646 | return (0);
|
---|
647 | }
|
---|
648 | insist_on_this_tape_number(1);
|
---|
649 | mr_asprintf(&outfname, "%s/tmp/all.tar.gz", bkpinfo->tmpdir);
|
---|
650 | make_hole_for_file(outfname);
|
---|
651 |
|
---|
652 | set_tape_block_size_with_mt(bkpinfo->media_device,
|
---|
653 | bkpinfo->internal_tape_block_size);
|
---|
654 |
|
---|
655 | log_it("Opening IN tape");
|
---|
656 | if (!
|
---|
657 | (g_tape_stream =
|
---|
658 | open_device_via_buffer(bkpinfo->media_device, 'r',
|
---|
659 | bkpinfo->internal_tape_block_size))) {
|
---|
660 | log_to_screen(_("Cannot openin stream device"));
|
---|
661 | return (1);
|
---|
662 | }
|
---|
663 | log_to_screen(_("Reading stream"));
|
---|
664 | log_it("stream device = '%s'", bkpinfo->media_device);
|
---|
665 | /* skip data disks */
|
---|
666 | open_evalcall_form("Skipping data disks on stream");
|
---|
667 | log_to_screen(_("Skipping data disks on stream"));
|
---|
668 | if (!(fout = fopen(outfname, "w"))) {
|
---|
669 | log_OS_error(outfname);
|
---|
670 | log_to_screen(_("Cannot openout datadisk all.tar.gz file"));
|
---|
671 | return (-1);
|
---|
672 | }
|
---|
673 | datablock = (char *) mr_malloc(256 * 1024);
|
---|
674 | for (i = 0; i < 32; i++) {
|
---|
675 | for (j = 0; j < 4; j++) {
|
---|
676 | for (length = 0, k = 0; length < 256 * 1024; length += k) {
|
---|
677 | k = fread(datablock + length, 1, 256 * 1024 - length,
|
---|
678 | g_tape_stream);
|
---|
679 | }
|
---|
680 | (void) fwrite(datablock, 1, (size_t) length, fout);
|
---|
681 | g_tape_posK += length / 1024;
|
---|
682 | }
|
---|
683 | if (i > 8) // otherwise, 'buffer' distorts calculations
|
---|
684 | {
|
---|
685 | templong = ((i - 8) * 4 + j) * 100 / (128 - 8 * 4);
|
---|
686 | update_evalcall_form((int) (templong));
|
---|
687 | }
|
---|
688 | }
|
---|
689 | paranoid_fclose(fout);
|
---|
690 | mr_free(datablock);
|
---|
691 | /* find initial blocks */
|
---|
692 | res = read_header_block_from_stream(&size, fname, &ctrl_chr);
|
---|
693 | retval += res;
|
---|
694 | if (ctrl_chr != BLK_START_OF_TAPE) {
|
---|
695 | wrong_marker(BLK_START_OF_TAPE, ctrl_chr);
|
---|
696 | }
|
---|
697 | res = read_header_block_from_stream(&size, fname, &ctrl_chr);
|
---|
698 | retval += res;
|
---|
699 | if (ctrl_chr != BLK_START_OF_BACKUP) {
|
---|
700 | wrong_marker(BLK_START_OF_BACKUP, ctrl_chr);
|
---|
701 | }
|
---|
702 | close_evalcall_form();
|
---|
703 | log_it("Saved all.tar.gz to '%s'", outfname);
|
---|
704 | (void) getcwd(old_cwd, MAX_STR_LEN);
|
---|
705 | chdir(bkpinfo->tmpdir);
|
---|
706 | mr_asprintf(&tmp, "tar -zxf %s tmp/mondo-restore.cfg 2> /dev/null",
|
---|
707 | outfname);
|
---|
708 | paranoid_system(tmp);
|
---|
709 | mr_free(tmp);
|
---|
710 | paranoid_system("cp -f tmp/mondo-restore.cfg . 2> /dev/null");
|
---|
711 | chdir(old_cwd);
|
---|
712 | unlink(outfname);
|
---|
713 | mr_free(outfname);
|
---|
714 | return (retval);
|
---|
715 | }
|
---|
716 |
|
---|
717 |
|
---|
718 | /**
|
---|
719 | * Start writing to a CD stream.
|
---|
720 | * @param cddev The CD device to openout via cdrecord.
|
---|
721 | * @param speed The speed to write at.
|
---|
722 | * @return 0 for success, nonzero for failure.
|
---|
723 | * @note This should be called only from backup processes.
|
---|
724 | */
|
---|
725 | int openout_cdstream(char *cddev, int speed)
|
---|
726 | {
|
---|
727 | /*@ buffers ***************************************************** */
|
---|
728 | char *command = NULL;
|
---|
729 |
|
---|
730 | /*@ end vars *************************************************** */
|
---|
731 |
|
---|
732 | /* add 'dummy' if testing */
|
---|
733 | mr_asprintf(&command,
|
---|
734 | "cdrecord -eject dev=%s speed=%d fs=24m -waiti - >> %s 2>> %s",
|
---|
735 | cddev, speed, MONDO_LOGFILE, MONDO_LOGFILE);
|
---|
736 | /* initialise the catalog */
|
---|
737 | g_current_media_number = 1;
|
---|
738 | tapecatalog = mr_list_alloc();
|
---|
739 | /* log stuff */
|
---|
740 | log_it("Opening OUT cdstream with the command");
|
---|
741 | log_it(command);
|
---|
742 | /* log_it("Let's see what happens, shall we?"); */
|
---|
743 | g_tape_stream = popen(command, "w");
|
---|
744 | mr_free(command);
|
---|
745 | if (g_tape_stream) {
|
---|
746 | return (0);
|
---|
747 | } else {
|
---|
748 | log_to_screen(_("Failed to openout to cdstream (fifo)"));
|
---|
749 | return (1);
|
---|
750 | }
|
---|
751 | }
|
---|
752 |
|
---|
753 |
|
---|
754 | /**
|
---|
755 | * Start writing to a tape device for the backup.
|
---|
756 | * @param tapedev The tape device to open for writing.
|
---|
757 | * @return 0 for success, nonzero for failure.
|
---|
758 | * @note This should be called ONLY from backup processes. It will OVERWRITE ANY
|
---|
759 | * EXISTING DATA on the tape!
|
---|
760 | */
|
---|
761 | int openout_tape(char *tapedev, long internal_tape_block_size)
|
---|
762 | {
|
---|
763 | g_current_media_number = 1;
|
---|
764 | if (g_tape_stream) {
|
---|
765 | log_it("FYI - I won't 'openout' the tape. It's already open.");
|
---|
766 | return (0);
|
---|
767 | }
|
---|
768 | tapecatalog = mr_list_alloc();
|
---|
769 | g_tape_posK = 0;
|
---|
770 |
|
---|
771 | set_tape_block_size_with_mt(tapedev, internal_tape_block_size);
|
---|
772 | log_it("Opening OUT tape");
|
---|
773 | if (!
|
---|
774 | (g_tape_stream =
|
---|
775 | open_device_via_buffer(tapedev, 'w', internal_tape_block_size))) {
|
---|
776 | log_to_screen(_("Cannot openin stream device"));
|
---|
777 | return (1);
|
---|
778 | }
|
---|
779 | return (0);
|
---|
780 | }
|
---|
781 |
|
---|
782 |
|
---|
783 | /**
|
---|
784 | * Copy a file from the opened stream (CD or tape) to @p outfile.
|
---|
785 | * @param bkpinfo The backup information structure. @c bkpinfo->media_device is the only field used.
|
---|
786 | * @param outfile The file to write to.
|
---|
787 | * @param size The size of the file in the input stream.
|
---|
788 | * @return 0 for success, nonzero for failure.
|
---|
789 | */
|
---|
790 | int
|
---|
791 | read_file_from_stream_to_file(struct s_bkpinfo *bkpinfo, char *outfile,
|
---|
792 | long long size)
|
---|
793 | {
|
---|
794 |
|
---|
795 | /*@ int ******************************************************** */
|
---|
796 | int res;
|
---|
797 |
|
---|
798 | /*@ end vars *************************************************** */
|
---|
799 |
|
---|
800 | res = read_file_from_stream_FULL(bkpinfo, outfile, NULL, size);
|
---|
801 |
|
---|
802 | return (res);
|
---|
803 | }
|
---|
804 |
|
---|
805 |
|
---|
806 | /**
|
---|
807 | * Copy a file from the currently opened stream (CD or tape) to the stream indicated
|
---|
808 | * by @p fout.
|
---|
809 | * @param bkpinfo The backup information structure. @c bkpinfo->media_size is the only field used.
|
---|
810 | * @param fout The stream to write the file to.
|
---|
811 | * @param size The size of the file in bytes.
|
---|
812 | * @return 0 for success, nonzero for failure.
|
---|
813 | */
|
---|
814 | int
|
---|
815 | read_file_from_stream_to_stream(struct s_bkpinfo *bkpinfo, FILE * fout,
|
---|
816 | long long size)
|
---|
817 | {
|
---|
818 |
|
---|
819 | /*@ int ******************************************************** */
|
---|
820 | int res;
|
---|
821 |
|
---|
822 | /*@ end vars *************************************************** */
|
---|
823 |
|
---|
824 | res = read_file_from_stream_FULL(bkpinfo, NULL, fout, size);
|
---|
825 | return (res);
|
---|
826 | }
|
---|
827 |
|
---|
828 |
|
---|
829 | /**
|
---|
830 | * Copy a file from the currently opened stream (CD or tape) to either a
|
---|
831 | * @c FILE pointer indicating a currently-opened file, or a filename indicating
|
---|
832 | * a new file to create. This is the backbone function that read_file_from_stream_to_file()
|
---|
833 | * and read_file_from_stream_to_stream() are wrappers for.
|
---|
834 | * @param bkpinfo The backup information structure. @c bkpinfo->media_size is the only field used.
|
---|
835 | * @param outfname If non-NULL, write to this file.
|
---|
836 | * @param foutstream If non-NULL, write to this stream.
|
---|
837 | * @param orig_size The original length of the file in bytes.
|
---|
838 | * @return 0 for success, nonzero for failure.
|
---|
839 | * @note Only @b one of @p outfname or @p foutstream may be non-NULL.
|
---|
840 | */
|
---|
841 | int
|
---|
842 | read_file_from_stream_FULL(struct s_bkpinfo *bkpinfo, char *outfname,
|
---|
843 | FILE * foutstream, long long orig_size)
|
---|
844 | {
|
---|
845 | /*@ buffers ***************************************************** */
|
---|
846 | char *tmp = NULL;
|
---|
847 | char *datablock = NULL;
|
---|
848 | char *temp_fname;
|
---|
849 | char *temp_cksum;
|
---|
850 | char *actual_cksum = NULL;
|
---|
851 |
|
---|
852 | /*@ int ********************************************************* */
|
---|
853 | int retval = 0;
|
---|
854 | #ifdef EXTRA_TAPE_CHECKSUMS
|
---|
855 | int i, ch;
|
---|
856 | #endif
|
---|
857 | int noof_blocks;
|
---|
858 | int ctrl_chr;
|
---|
859 | int res;
|
---|
860 | /*@ pointers **************************************************** */
|
---|
861 | FILE *fout;
|
---|
862 |
|
---|
863 | /*@ long ***************************************************** */
|
---|
864 | long bytes_to_write = 0;
|
---|
865 |
|
---|
866 | /*@ long long *************************************************** */
|
---|
867 | long long temp_size, size;
|
---|
868 | long bytes_read, bytes_to_read;
|
---|
869 | long long total_read_from_tape_for_this_file = 0;
|
---|
870 | long long where_I_was_before_tape_change = 0;
|
---|
871 | /*@ unsigned int ************************************************ */
|
---|
872 | unsigned int crc16;
|
---|
873 | unsigned int crctt;
|
---|
874 |
|
---|
875 | bool had_to_resync = FALSE;
|
---|
876 |
|
---|
877 | /*@ init ******************************************************* */
|
---|
878 | malloc_string(temp_fname);
|
---|
879 | malloc_string(temp_cksum);
|
---|
880 | datablock = mr_malloc(TAPE_BLOCK_SIZE);
|
---|
881 | crc16 = 0;
|
---|
882 | crctt = 0;
|
---|
883 | size = orig_size;
|
---|
884 |
|
---|
885 | /*@ end vars *************************************************** */
|
---|
886 |
|
---|
887 | res = read_header_block_from_stream(&temp_size, temp_fname, &ctrl_chr);
|
---|
888 | if (orig_size != temp_size && orig_size != -1) {
|
---|
889 | mr_asprintf(&tmp,
|
---|
890 | "output file's size should be %ld K but is apparently %ld K",
|
---|
891 | (long) size >> 10, (long) temp_size >> 10);
|
---|
892 | log_to_screen(tmp);
|
---|
893 | mr_free(tmp);
|
---|
894 | }
|
---|
895 | if (ctrl_chr != BLK_START_FILE) {
|
---|
896 | wrong_marker(BLK_START_FILE, ctrl_chr);
|
---|
897 | return (1);
|
---|
898 | }
|
---|
899 | mr_asprintf(&tmp, "Reading file from tape; writing to '%s'; %ld KB",
|
---|
900 | outfname, (long) size >> 10);
|
---|
901 | log_to_screen(tmp);
|
---|
902 | mr_free(tmp);
|
---|
903 |
|
---|
904 | if (foutstream) {
|
---|
905 | fout = foutstream;
|
---|
906 | } else {
|
---|
907 | fout = fopen(outfname, "w");
|
---|
908 | }
|
---|
909 | if (!fout) {
|
---|
910 | log_OS_error(outfname);
|
---|
911 | log_to_screen(_("Cannot openout file"));
|
---|
912 | return (1);
|
---|
913 | }
|
---|
914 | total_read_from_tape_for_this_file = 0;
|
---|
915 | for (noof_blocks = 0; size > 0;
|
---|
916 | noof_blocks++, size -=
|
---|
917 | bytes_to_write, total_read_from_tape_for_this_file +=
|
---|
918 | bytes_read) {
|
---|
919 | bytes_to_write =
|
---|
920 | (size < TAPE_BLOCK_SIZE) ? (long) size : TAPE_BLOCK_SIZE;
|
---|
921 | bytes_to_read = TAPE_BLOCK_SIZE;
|
---|
922 | bytes_read = fread(datablock, 1, bytes_to_read, g_tape_stream);
|
---|
923 | while (bytes_read < bytes_to_read) { // next tape!
|
---|
924 | // crctt=crc16=0;
|
---|
925 | where_I_was_before_tape_change = size;
|
---|
926 | mr_msg(4, "where_I_was_... = %lld",
|
---|
927 | where_I_was_before_tape_change);
|
---|
928 | start_to_read_from_next_tape(bkpinfo);
|
---|
929 | mr_msg(4, "Started reading from next tape.");
|
---|
930 | skip_incoming_files_until_we_find_this_one(temp_fname);
|
---|
931 | mr_msg(4, "Skipped irrelevant files OK.");
|
---|
932 | for (size = orig_size; size > where_I_was_before_tape_change;
|
---|
933 | size -= bytes_to_write) {
|
---|
934 | bytes_read =
|
---|
935 | fread(datablock, 1, bytes_to_read, g_tape_stream);
|
---|
936 | }
|
---|
937 | mr_msg(4, "'size' is now %lld (should be %lld)", size,
|
---|
938 | where_I_was_before_tape_change);
|
---|
939 | log_to_screen("Successfully re-sync'd tape");
|
---|
940 | had_to_resync = TRUE;
|
---|
941 | bytes_read = fread(datablock, 1, bytes_to_read, g_tape_stream);
|
---|
942 | }
|
---|
943 |
|
---|
944 | (void) fwrite(datablock, 1, (size_t) bytes_to_write, fout); // for blocking reasons, bytes_successfully_read_in isn't necessarily the same as bytes_to_write
|
---|
945 |
|
---|
946 | #ifdef EXTRA_TAPE_CHECKSUMS
|
---|
947 | for (i = 0; i < (int) bytes_to_write; i++) {
|
---|
948 | ch = datablock[i];
|
---|
949 | crc16 = updcrcr(crc16, (unsigned) ch);
|
---|
950 | crctt = updcrc(crctt, (unsigned) ch);
|
---|
951 | }
|
---|
952 | #endif
|
---|
953 | }
|
---|
954 | mr_msg(6, "Total read from tape for this file = %lld",
|
---|
955 | total_read_from_tape_for_this_file);
|
---|
956 | mr_msg(6, ".......................... Should be %lld", orig_size);
|
---|
957 | g_tape_posK += total_read_from_tape_for_this_file / 1024;
|
---|
958 | mr_asprintf(&actual_cksum, "%04x%04x", crc16, crctt);
|
---|
959 | if (foutstream) { /*log_it("Finished writing to foutstream"); */
|
---|
960 | } else {
|
---|
961 | paranoid_fclose(fout);
|
---|
962 | }
|
---|
963 | res = read_header_block_from_stream(&temp_size, temp_cksum, &ctrl_chr);
|
---|
964 | if (ctrl_chr != BLK_STOP_FILE) {
|
---|
965 | wrong_marker(BLK_STOP_FILE, ctrl_chr);
|
---|
966 | // fatal_error("Bad marker"); // return(1);
|
---|
967 | }
|
---|
968 | if (strcmp(temp_cksum, actual_cksum)) {
|
---|
969 | mr_asprintf(&tmp, _("actual cksum=%s; recorded cksum=%s"), actual_cksum,
|
---|
970 | temp_cksum);
|
---|
971 | log_to_screen(tmp);
|
---|
972 | mr_free(tmp);
|
---|
973 |
|
---|
974 | mr_asprintf(&tmp, _("%s (%ld K) is corrupt on tape"), temp_fname,
|
---|
975 | (long) orig_size >> 10);
|
---|
976 | log_to_screen(tmp);
|
---|
977 | mr_free(tmp);
|
---|
978 | retval++;
|
---|
979 | }
|
---|
980 | mr_free(actual_cksum);
|
---|
981 | mr_free(datablock);
|
---|
982 | mr_free(temp_fname);
|
---|
983 | mr_free(temp_cksum);
|
---|
984 | return (retval);
|
---|
985 | }
|
---|
986 |
|
---|
987 |
|
---|
988 | /**
|
---|
989 | * Read a header block from the currently opened stream (CD or tape).
|
---|
990 | * This block indicates the length of the following file (if it's file-related)
|
---|
991 | * the filename (if it's file-related), and the block type.
|
---|
992 | * @param plen Where to put the length of the file. Valid only for file-related header blocks.
|
---|
993 | * @param filename Where to put the name of the file. Valid only for file-related header blocks.
|
---|
994 | * @param pcontrol_char Where to put the type of block (e.g. start-file, end-file, start-tape, ...)
|
---|
995 | * @return 0 for success, nonzero for failure.
|
---|
996 | * @note If you read a marker (@p pcontrol_char) you're not expecting, you can call wrong_marker().
|
---|
997 | */
|
---|
998 | int
|
---|
999 | read_header_block_from_stream(long long *plen, char *filename,
|
---|
1000 | int *pcontrol_char)
|
---|
1001 | {
|
---|
1002 |
|
---|
1003 | /*@ buffers ***************************************************** */
|
---|
1004 | char *tempblock;
|
---|
1005 |
|
---|
1006 | /*@ int ********************************************************* */
|
---|
1007 | int i, retval;
|
---|
1008 |
|
---|
1009 | /*@ end vars *************************************************** */
|
---|
1010 |
|
---|
1011 | tempblock = (char *) mr_malloc((size_t) TAPE_BLOCK_SIZE);
|
---|
1012 |
|
---|
1013 | for (i = 0; i < (int) TAPE_BLOCK_SIZE; i++) {
|
---|
1014 | tempblock[i] = 0;
|
---|
1015 | }
|
---|
1016 | while (!(*pcontrol_char = tempblock[7000])) {
|
---|
1017 | g_tape_posK +=
|
---|
1018 | fread(tempblock, 1, (size_t) TAPE_BLOCK_SIZE,
|
---|
1019 | g_tape_stream) / 1024;
|
---|
1020 | }
|
---|
1021 | memcpy((char *) plen, tempblock + 7001, sizeof(long long));
|
---|
1022 | if (strcmp(tempblock + 6000 + *pcontrol_char, "Mondolicious, baby")) {
|
---|
1023 | log_it("Bad header block at %ld K", (long) g_tape_posK);
|
---|
1024 | }
|
---|
1025 | strcpy(filename, tempblock + 1000);
|
---|
1026 | if (*pcontrol_char == BLK_ABORTED_BACKUP) {
|
---|
1027 | log_to_screen("I can't verify an aborted backup.");
|
---|
1028 | retval = 1;
|
---|
1029 | } else {
|
---|
1030 | retval = 0;
|
---|
1031 | }
|
---|
1032 | for (i = 1000; i < 1020; i++) {
|
---|
1033 | if (tempblock[i] < 32 || tempblock[i] > 126) {
|
---|
1034 | tempblock[i] = ' ';
|
---|
1035 | }
|
---|
1036 | }
|
---|
1037 | tempblock[i] = '\0';
|
---|
1038 | mr_msg(6, "%s (fname=%s, size=%ld K)",
|
---|
1039 | marker_to_string(*pcontrol_char), tempblock + 1000,
|
---|
1040 | (long) (*plen) >> 10);
|
---|
1041 | mr_free(tempblock);
|
---|
1042 | return (retval);
|
---|
1043 | }
|
---|
1044 |
|
---|
1045 |
|
---|
1046 | /**
|
---|
1047 | * Add specified file/slice to the internal catalog of all archives written.
|
---|
1048 | * This lets us restart on a new CD/tape/whatever if it runs out of room. We just
|
---|
1049 | * write the last [buffer size] MB from the catalog to the new tape, so we know
|
---|
1050 | * we have @e all archives on some CD/tape/whatever.
|
---|
1051 | * @param type The type of file we're cataloging (afioball, slice, something else)
|
---|
1052 | * @param number The fileset number or biggiefile number.
|
---|
1053 | * @param aux The slice number if it's a biggiefile, or any other additional info.
|
---|
1054 | * @param fn The original full pathname of the file we're recording.
|
---|
1055 | * @return The index of the record we just added.
|
---|
1056 | */
|
---|
1057 | int register_in_tape_catalog(t_archtype type, int number, long aux,
|
---|
1058 | char *fn)
|
---|
1059 | {
|
---|
1060 | char *fname = NULL;
|
---|
1061 | char *p = NULL;
|
---|
1062 | struct s_tapecat_entry *te = NULL;
|
---|
1063 | struct mr_list_elt *elt = NULL;
|
---|
1064 |
|
---|
1065 | p = strrchr(fn, '/');
|
---|
1066 | if (p) {
|
---|
1067 | p++;
|
---|
1068 | } else {
|
---|
1069 | p = fn;
|
---|
1070 | }
|
---|
1071 | mr_asprintf(&fname, p);
|
---|
1072 |
|
---|
1073 | te = (struct s_tapecat_entry *)mr_malloc(sizeof(struct s_tapecat_entry));
|
---|
1074 | te->type = type;
|
---|
1075 | te->number = number;
|
---|
1076 | te->aux = aux;
|
---|
1077 | te->tape_posK = g_tape_posK;
|
---|
1078 | /* BERLIOS: Check if this is written womewhere, as it's only a pointer */
|
---|
1079 | /* BERLIOS: Verify to purge fname correctly */
|
---|
1080 | te->fname = fname;
|
---|
1081 |
|
---|
1082 | /* place the data in a list elt */
|
---|
1083 | elt = mr_list_alloc_elt((void *)te, mr_free_te);
|
---|
1084 | mr_list_add_elt_last(tapecatalog, elt);
|
---|
1085 |
|
---|
1086 | // returns the index of the record we've just added
|
---|
1087 | return (mr_list_length(tapecatalog));
|
---|
1088 | }
|
---|
1089 |
|
---|
1090 |
|
---|
1091 | /**
|
---|
1092 | * Decide whether we should start a new tape. This is TRUE if we've run out of tape
|
---|
1093 | * (got SIGPIPE) or look like we will.
|
---|
1094 | * @param mediasize The size of the tape in megabytes.
|
---|
1095 | * @param length_of_incoming_file The length of the file we're about to write, in bytes.
|
---|
1096 | * @bug This seems like it'll only work for media_size != autodetect, but Mondo only allows
|
---|
1097 | * autodetecting the size. Huh?
|
---|
1098 | */
|
---|
1099 |
|
---|
1100 | /* BERLIOS: Should be reviewed for mediasize being a off_t ??? */
|
---|
1101 | bool
|
---|
1102 | should_we_write_to_next_tape(long mediasize,
|
---|
1103 | off_t length_of_incoming_file)
|
---|
1104 | {
|
---|
1105 | /*@ bool's ***************************************************** */
|
---|
1106 | bool we_need_a_new_tape = FALSE;
|
---|
1107 |
|
---|
1108 | /*@ end vars *************************************************** */
|
---|
1109 |
|
---|
1110 | if (mediasize == 0) {
|
---|
1111 | return (FALSE);
|
---|
1112 | }
|
---|
1113 | if (mediasize > 0 && (g_tape_posK >> 10 >= mediasize)) {
|
---|
1114 | log_it("mediasize = %ld", mediasize);
|
---|
1115 | we_need_a_new_tape = TRUE;
|
---|
1116 | log_to_screen(_("Should have started a new tape/CD already"));
|
---|
1117 | }
|
---|
1118 | if ((g_tape_posK + length_of_incoming_file / 1024) >> 10 >=
|
---|
1119 | mediasize - (SLICE_SIZE * 4 / 1024)) {
|
---|
1120 | log_it("g_tape_posK = %ld\nmediasize = %ld\n", g_tape_posK,
|
---|
1121 | mediasize);
|
---|
1122 | we_need_a_new_tape = TRUE;
|
---|
1123 | }
|
---|
1124 | return (we_need_a_new_tape);
|
---|
1125 | }
|
---|
1126 |
|
---|
1127 |
|
---|
1128 | /**
|
---|
1129 | * Seek through the stream until we find a header block where the NAME field matches
|
---|
1130 | * @p the_file_I_was_reading. This is useful if you've just started reading from
|
---|
1131 | * a new tape and want to find the file you were reading when the tape ended.
|
---|
1132 | * @param the_file_I_was_reading File name to look for.
|
---|
1133 | * @return 0 for success, nonzero for failure.
|
---|
1134 | */
|
---|
1135 | int skip_incoming_files_until_we_find_this_one(char
|
---|
1136 | *the_file_I_was_reading)
|
---|
1137 | {
|
---|
1138 | char *pA;
|
---|
1139 | char *pB;
|
---|
1140 | int res;
|
---|
1141 | int ctrl_chr;
|
---|
1142 | char *temp_fname;
|
---|
1143 | char *datablock;
|
---|
1144 | long long temp_size, size;
|
---|
1145 | long bytes_to_write;
|
---|
1146 |
|
---|
1147 | datablock = mr_malloc(TAPE_BLOCK_SIZE);
|
---|
1148 | malloc_string(temp_fname);
|
---|
1149 | pB = strrchr(the_file_I_was_reading, '/');
|
---|
1150 | if (pB) {
|
---|
1151 | pB++;
|
---|
1152 | } else {
|
---|
1153 | pB = the_file_I_was_reading;
|
---|
1154 | }
|
---|
1155 | mr_msg(1, "skip_incoming_..(%s)", pB);
|
---|
1156 | mr_msg(2, "Looking for initial START_AN_AFIO_OR_SLICE");
|
---|
1157 | ctrl_chr = -1;
|
---|
1158 | while (ctrl_chr != BLK_START_AN_AFIO_OR_SLICE) {
|
---|
1159 | res =
|
---|
1160 | read_header_block_from_stream(&temp_size, temp_fname,
|
---|
1161 | &ctrl_chr);
|
---|
1162 | if (ctrl_chr == BLK_START_AN_AFIO_OR_SLICE) {
|
---|
1163 | break;
|
---|
1164 | }
|
---|
1165 | mr_msg(1, "%lld %s %c", temp_size, temp_fname, ctrl_chr);
|
---|
1166 | wrong_marker(BLK_START_AN_AFIO_OR_SLICE, ctrl_chr);
|
---|
1167 | mr_msg(3, "Still trying to re-sync w/ tape");
|
---|
1168 | }
|
---|
1169 | while (ctrl_chr != BLK_START_FILE) {
|
---|
1170 | res =
|
---|
1171 | read_header_block_from_stream(&temp_size, temp_fname,
|
---|
1172 | &ctrl_chr);
|
---|
1173 | if (ctrl_chr == BLK_START_FILE) {
|
---|
1174 | break;
|
---|
1175 | }
|
---|
1176 | mr_msg(1, "%lld %s %c", temp_size, temp_fname, ctrl_chr);
|
---|
1177 | wrong_marker(BLK_START_FILE, ctrl_chr);
|
---|
1178 | mr_msg(3, "Still trying to re-sync w/ tape");
|
---|
1179 | }
|
---|
1180 | pA = strrchr(temp_fname, '/');
|
---|
1181 | if (pA) {
|
---|
1182 | pA++;
|
---|
1183 | } else {
|
---|
1184 | pA = temp_fname;
|
---|
1185 | }
|
---|
1186 | pB = strrchr(the_file_I_was_reading, '/');
|
---|
1187 | if (pB) {
|
---|
1188 | pB++;
|
---|
1189 | } else {
|
---|
1190 | pB = the_file_I_was_reading;
|
---|
1191 | }
|
---|
1192 | while (strcmp(pA, pB)) {
|
---|
1193 | mr_msg(6, "Skipping %s (it's not %s)", temp_fname,
|
---|
1194 | the_file_I_was_reading);
|
---|
1195 | for (size = temp_size; size > 0; size -= bytes_to_write) {
|
---|
1196 | bytes_to_write =
|
---|
1197 | (size < TAPE_BLOCK_SIZE) ? (long) size : TAPE_BLOCK_SIZE;
|
---|
1198 | // FIXME - needs error-checking and -catching
|
---|
1199 | fread(datablock, 1, (size_t) TAPE_BLOCK_SIZE, g_tape_stream);
|
---|
1200 | }
|
---|
1201 | res =
|
---|
1202 | read_header_block_from_stream(&temp_size, temp_fname,
|
---|
1203 | &ctrl_chr);
|
---|
1204 | if (ctrl_chr != BLK_STOP_FILE) {
|
---|
1205 | wrong_marker(BLK_STOP_FILE, ctrl_chr);
|
---|
1206 | }
|
---|
1207 | res =
|
---|
1208 | read_header_block_from_stream(&temp_size, temp_fname,
|
---|
1209 | &ctrl_chr);
|
---|
1210 | if (ctrl_chr != BLK_STOP_AN_AFIO_OR_SLICE) {
|
---|
1211 | wrong_marker(BLK_STOP_AN_AFIO_OR_SLICE, ctrl_chr);
|
---|
1212 | }
|
---|
1213 | res =
|
---|
1214 | read_header_block_from_stream(&temp_size, temp_fname,
|
---|
1215 | &ctrl_chr);
|
---|
1216 | if (ctrl_chr != BLK_START_AN_AFIO_OR_SLICE) {
|
---|
1217 | wrong_marker(BLK_START_AN_AFIO_OR_SLICE, ctrl_chr);
|
---|
1218 | }
|
---|
1219 | res =
|
---|
1220 | read_header_block_from_stream(&temp_size, temp_fname,
|
---|
1221 | &ctrl_chr);
|
---|
1222 | if (ctrl_chr != BLK_START_FILE) {
|
---|
1223 | wrong_marker(BLK_START_FILE, ctrl_chr);
|
---|
1224 | }
|
---|
1225 | pA = strrchr(temp_fname, '/');
|
---|
1226 | if (pA) {
|
---|
1227 | pA++;
|
---|
1228 | } else {
|
---|
1229 | pA = temp_fname;
|
---|
1230 | }
|
---|
1231 | pB = strrchr(the_file_I_was_reading, '/');
|
---|
1232 | if (pB) {
|
---|
1233 | pB++;
|
---|
1234 | } else {
|
---|
1235 | pB = the_file_I_was_reading;
|
---|
1236 | }
|
---|
1237 | }
|
---|
1238 | mr_msg(2, "Reading %s (it matches %s)", temp_fname,
|
---|
1239 | the_file_I_was_reading);
|
---|
1240 | mr_free(temp_fname);
|
---|
1241 | mr_free(datablock);
|
---|
1242 | return (0);
|
---|
1243 | }
|
---|
1244 |
|
---|
1245 |
|
---|
1246 | /**
|
---|
1247 | * Start to read from the next tape. Assumes the user has already inserted it.
|
---|
1248 | * @param bkpinfo The backup information structure. @c bkpinfo->media_device is the only field used.
|
---|
1249 | * @return 0 for success, nonzero for failure.
|
---|
1250 | */
|
---|
1251 | int start_to_read_from_next_tape(struct s_bkpinfo *bkpinfo)
|
---|
1252 | {
|
---|
1253 | /*@ int ********************************************************* */
|
---|
1254 | int res = 0;
|
---|
1255 | char *sz_msg;
|
---|
1256 | int ctrlchr;
|
---|
1257 | long long temp_size;
|
---|
1258 | malloc_string(sz_msg);
|
---|
1259 | /*@ end vars *************************************************** */
|
---|
1260 |
|
---|
1261 | paranoid_pclose(g_tape_stream);
|
---|
1262 | sync();
|
---|
1263 | sync();
|
---|
1264 | sync();
|
---|
1265 | log_it("Next tape requested.");
|
---|
1266 | insist_on_this_tape_number(g_current_media_number + 1); // will increment it, too
|
---|
1267 | log_it("Opening IN the next tape");
|
---|
1268 | if (!
|
---|
1269 | (g_tape_stream =
|
---|
1270 | open_device_via_buffer(bkpinfo->media_device, 'r',
|
---|
1271 | bkpinfo->internal_tape_block_size))) {
|
---|
1272 | log_to_screen(_("Cannot openin stream device"));
|
---|
1273 | return (1);
|
---|
1274 | }
|
---|
1275 | g_tape_posK = 0;
|
---|
1276 | g_sigpipe = FALSE;
|
---|
1277 | res += read_header_block_from_stream(&temp_size, sz_msg, &ctrlchr); /* just in case */
|
---|
1278 | if (ctrlchr != BLK_START_OF_TAPE) {
|
---|
1279 | wrong_marker(BLK_START_OF_TAPE, ctrlchr);
|
---|
1280 | }
|
---|
1281 | res += read_header_block_from_stream(&temp_size, sz_msg, &ctrlchr); /* just in case */
|
---|
1282 | if (ctrlchr != BLK_START_OF_BACKUP) {
|
---|
1283 | wrong_marker(BLK_START_OF_BACKUP, ctrlchr);
|
---|
1284 | } else {
|
---|
1285 | mr_msg(3, "Next tape opened OK. Whoopee!");
|
---|
1286 | }
|
---|
1287 | mr_free(sz_msg);
|
---|
1288 | return (res);
|
---|
1289 | }
|
---|
1290 |
|
---|
1291 |
|
---|
1292 | /**
|
---|
1293 | * Start to write to the next tape. Assume the user has already inserted it.
|
---|
1294 | * @param bkpinfo The backup information structure. @c bkpinfo->media_device is the only field used.
|
---|
1295 | * @return 0 for success, nonzero for failure.
|
---|
1296 | */
|
---|
1297 | int start_to_write_to_next_tape(struct s_bkpinfo *bkpinfo)
|
---|
1298 | {
|
---|
1299 | int res = 0;
|
---|
1300 | char *command = NULL;
|
---|
1301 |
|
---|
1302 | paranoid_pclose(g_tape_stream);
|
---|
1303 | sync();
|
---|
1304 | sync();
|
---|
1305 | sync();
|
---|
1306 | log_it("New tape requested.");
|
---|
1307 | insist_on_this_tape_number(g_current_media_number + 1); // will increment g_current_media, too
|
---|
1308 | if (bkpinfo->backup_media_type == cdstream) {
|
---|
1309 | mr_asprintf(&command,
|
---|
1310 | "cdrecord -eject dev=%s speed=%d fs=24m -waiti - >> %s 2>> %s",
|
---|
1311 | bkpinfo->media_device, bkpinfo->cdrw_speed, MONDO_LOGFILE,
|
---|
1312 | MONDO_LOGFILE);
|
---|
1313 | log_it("Opening OUT to next CD with the command");
|
---|
1314 | log_it(command);
|
---|
1315 | log_it("Let's see what happens, shall we?");
|
---|
1316 | g_tape_stream = popen(command, "w");
|
---|
1317 | mr_free(command);
|
---|
1318 | if (!g_tape_stream) {
|
---|
1319 | log_to_screen(_("Failed to openout to cdstream (fifo)"));
|
---|
1320 | return (1);
|
---|
1321 | }
|
---|
1322 | } else {
|
---|
1323 | log_it("Opening OUT to next tape");
|
---|
1324 | if (!
|
---|
1325 | (g_tape_stream =
|
---|
1326 | open_device_via_buffer(bkpinfo->media_device, 'w',
|
---|
1327 | bkpinfo->internal_tape_block_size))) {
|
---|
1328 | log_to_screen(_("Cannot openin stream device"));
|
---|
1329 | return (1);
|
---|
1330 | }
|
---|
1331 | }
|
---|
1332 | g_tape_posK = 0;
|
---|
1333 | g_sigpipe = FALSE;
|
---|
1334 | res += write_header_block_to_stream((off_t)0, "start-of-tape", BLK_START_OF_TAPE); /* just in case */
|
---|
1335 | res += write_header_block_to_stream((off_t)0, "start-of-backup", BLK_START_OF_BACKUP); /* just in case */
|
---|
1336 | return (res);
|
---|
1337 | }
|
---|
1338 |
|
---|
1339 |
|
---|
1340 | /**
|
---|
1341 | * Write a bufferfull of the most recent archives to the tape. The
|
---|
1342 | * rationale behind this is a bit complex. If the previous tape ended
|
---|
1343 | * suddenly (EOF or otherwise) some archives were probably left in the
|
---|
1344 | * buffer. That means that Mondo thinks they have been written, but
|
---|
1345 | * the external binary @c buffer has not actually written them. So to
|
---|
1346 | * be safe, we start the new tape by writing the last bufferfull from
|
---|
1347 | * the old one. This insures that all archives will be on at least
|
---|
1348 | * one tape. Sounds inelegant, but it works.
|
---|
1349 | * @param bkpinfo The backup information structure. @c bkpinfo->tmpdir is the only field used.
|
---|
1350 | * @return 0 for success, nonzero for failure.
|
---|
1351 | */
|
---|
1352 | int write_backcatalog_to_tape(struct s_bkpinfo *bkpinfo)
|
---|
1353 | {
|
---|
1354 | int i, last, res = 0;
|
---|
1355 | char *fname = NULL;
|
---|
1356 | struct mr_list_elt *elt = NULL;
|
---|
1357 | struct s_tapecat_entry *te = NULL;
|
---|
1358 |
|
---|
1359 | mr_msg(2, "I am now writing back catalog to tape");
|
---|
1360 | elt = tapecatalog->first;
|
---|
1361 | while (elt != NULL) {
|
---|
1362 | te = (struct s_tapecat_entry *) elt->data;
|
---|
1363 | mr_asprintf(&fname, "%s/tmpfs/backcatalog/%s", bkpinfo->tmpdir, te->fname);
|
---|
1364 | if (!does_file_exist(fname)) {
|
---|
1365 | mr_msg(6, "Can't write %s - it doesn't exist.", fname);
|
---|
1366 | } else {
|
---|
1367 | write_header_block_to_stream(length_of_file(fname),
|
---|
1368 | "start-backcatalog-afio-or-slice",
|
---|
1369 | BLK_START_AN_AFIO_OR_SLICE);
|
---|
1370 | mr_msg(2, "Writing %s", fname);
|
---|
1371 | if (write_file_to_stream_from_file(bkpinfo, fname)) {
|
---|
1372 | res++;
|
---|
1373 | mr_msg(2, "%s failed", fname);
|
---|
1374 | }
|
---|
1375 | if (i != last) {
|
---|
1376 | write_header_block_to_stream((off_t)0,
|
---|
1377 | "stop-backcatalog-afio-or-slice",
|
---|
1378 | BLK_STOP_AN_AFIO_OR_SLICE);
|
---|
1379 | }
|
---|
1380 | }
|
---|
1381 | mr_free(fname);
|
---|
1382 | elt = elt->next;
|
---|
1383 | }
|
---|
1384 | mr_msg(2, "Finished writing back catalog to tape");
|
---|
1385 | return (res);
|
---|
1386 | }
|
---|
1387 |
|
---|
1388 |
|
---|
1389 | /**
|
---|
1390 | * Write all.tar.gz (produced by Mindi) to the first 32M of the first tape.
|
---|
1391 | * @param fname The path to all.tar.gz.
|
---|
1392 | * @return 0 for success, nonzero for failure.
|
---|
1393 | */
|
---|
1394 | int write_data_disks_to_stream(char *fname)
|
---|
1395 | {
|
---|
1396 | /*@ pointers *************************************************** */
|
---|
1397 | FILE *fin = NULL;
|
---|
1398 | char *tmp = NULL;
|
---|
1399 |
|
---|
1400 | /*@ long ******************************************************* */
|
---|
1401 | long m = -1;
|
---|
1402 | long templong;
|
---|
1403 |
|
---|
1404 | /*@ int ******************************************************** */
|
---|
1405 | int i, j;
|
---|
1406 |
|
---|
1407 | /*@ buffers **************************************************** */
|
---|
1408 | char tempblock[256 * 1024];
|
---|
1409 |
|
---|
1410 | /*@ end vars *************************************************** */
|
---|
1411 |
|
---|
1412 | open_evalcall_form(_("Writing data disks to tape"));
|
---|
1413 | log_to_screen(_("Writing data disks to tape"));
|
---|
1414 | log_it("Data disks = %s", fname);
|
---|
1415 | if (!does_file_exist(fname)) {
|
---|
1416 | mr_asprintf(&tmp, _("Cannot find %s"), fname);
|
---|
1417 | log_to_screen(tmp);
|
---|
1418 | mr_free(tmp);
|
---|
1419 | return (1);
|
---|
1420 | }
|
---|
1421 | if (!(fin = fopen(fname, "r"))) {
|
---|
1422 | log_OS_error(fname);
|
---|
1423 | fatal_error("Cannot openin the data disk");
|
---|
1424 | }
|
---|
1425 | for (i = 0; i < 32; i++) { /* 32MB */
|
---|
1426 | for (j = 0; j < 4; j++) { /* 256K x 4 = 1MB (1024K) */
|
---|
1427 | if (!feof(fin)) {
|
---|
1428 | m = (long) fread(tempblock, 1, 256 * 1024, fin);
|
---|
1429 | } else {
|
---|
1430 | m = 0;
|
---|
1431 | }
|
---|
1432 | for (; m < 256 * 1024; m++) {
|
---|
1433 | tempblock[m] = '\0';
|
---|
1434 | }
|
---|
1435 | g_tape_posK +=
|
---|
1436 | fwrite(tempblock, 1, 256 * 1024, g_tape_stream) / 1024;
|
---|
1437 | }
|
---|
1438 | if (i > g_tape_buffer_size_MB) // otherwise, 'buffer' distorts calculations
|
---|
1439 | {
|
---|
1440 | templong = ((i - 8) * 4 + j) * 100 / (128 - 8 * 4);
|
---|
1441 | update_evalcall_form((int) (templong));
|
---|
1442 | }
|
---|
1443 | }
|
---|
1444 | paranoid_fclose(fin);
|
---|
1445 | close_evalcall_form();
|
---|
1446 | return (0);
|
---|
1447 | }
|
---|
1448 |
|
---|
1449 |
|
---|
1450 | /**
|
---|
1451 | * Copy @p infile to the opened stream (CD or tape).
|
---|
1452 | * @param bkpinfo The backup information structure. @c bkpinfo->media_size is the only field used.
|
---|
1453 | * @param infile The file to write to the stream.
|
---|
1454 | * @return 0 for success, nonzero for failure.
|
---|
1455 | */
|
---|
1456 | int write_file_to_stream_from_file(struct s_bkpinfo *bkpinfo, char *infile)
|
---|
1457 | {
|
---|
1458 | /*@ buffers **************************************************** */
|
---|
1459 | char *tmp = NULL;
|
---|
1460 | char datablock[TAPE_BLOCK_SIZE];
|
---|
1461 | char *checksum = NULL;
|
---|
1462 | char *infile_basename = NULL;
|
---|
1463 |
|
---|
1464 | /*@ int ******************************************************** */
|
---|
1465 | int retval = 0;
|
---|
1466 | int noof_blocks;
|
---|
1467 |
|
---|
1468 | /* unsigned int ch; */
|
---|
1469 | unsigned int crc16;
|
---|
1470 | unsigned int crctt;
|
---|
1471 |
|
---|
1472 | /*@ pointers *************************************************** */
|
---|
1473 | FILE *fin;
|
---|
1474 | char *p;
|
---|
1475 |
|
---|
1476 | /*@ long ******************************************************* */
|
---|
1477 | long bytes_to_read = 0;
|
---|
1478 | long i;
|
---|
1479 |
|
---|
1480 | off_t filesize;
|
---|
1481 |
|
---|
1482 | #ifdef EXTRA_TAPE_CHECKSUMS
|
---|
1483 | int ch;
|
---|
1484 | #endif
|
---|
1485 |
|
---|
1486 | /*@ initialize ************************************************ */
|
---|
1487 | crc16 = 0;
|
---|
1488 | crctt = 0;
|
---|
1489 |
|
---|
1490 | /*@ end vars *************************************************** */
|
---|
1491 |
|
---|
1492 | infile_basename = strrchr(infile, '/');
|
---|
1493 | if (infile_basename) {
|
---|
1494 | infile_basename++;
|
---|
1495 | } else {
|
---|
1496 | infile_basename = infile;
|
---|
1497 | }
|
---|
1498 | filesize = length_of_file(infile);
|
---|
1499 | if (should_we_write_to_next_tape
|
---|
1500 | (bkpinfo->media_size, filesize)) {
|
---|
1501 | start_to_write_to_next_tape(bkpinfo);
|
---|
1502 | write_backcatalog_to_tape(bkpinfo);
|
---|
1503 | }
|
---|
1504 | p = strrchr(infile, '/');
|
---|
1505 | if (!p) {
|
---|
1506 | p = infile;
|
---|
1507 | } else {
|
---|
1508 | p++;
|
---|
1509 | }
|
---|
1510 | mr_asprintf(&tmp, "Writing file '%s' to tape (%ld KB)", p,
|
---|
1511 | (long) filesize >> 10);
|
---|
1512 | log_it(tmp);
|
---|
1513 | mr_free(tmp);
|
---|
1514 |
|
---|
1515 | write_header_block_to_stream(filesize, infile_basename,
|
---|
1516 | BLK_START_FILE);
|
---|
1517 | //go_here_to_restart_saving_of_file:
|
---|
1518 | if (!(fin = fopen(infile, "r"))) {
|
---|
1519 | log_OS_error(infile);
|
---|
1520 | return (1);
|
---|
1521 | }
|
---|
1522 | for (noof_blocks = 0; filesize > 0;
|
---|
1523 | noof_blocks++, filesize -= bytes_to_read) {
|
---|
1524 | if (filesize < TAPE_BLOCK_SIZE) {
|
---|
1525 | bytes_to_read = (long) filesize;
|
---|
1526 | for (i = 0; i < TAPE_BLOCK_SIZE; i++) {
|
---|
1527 | datablock[i] = '\0';
|
---|
1528 | }
|
---|
1529 | } else {
|
---|
1530 | bytes_to_read = TAPE_BLOCK_SIZE;
|
---|
1531 | }
|
---|
1532 | (void) fread(datablock, 1, (size_t) bytes_to_read, fin);
|
---|
1533 | g_tape_posK += fwrite(datablock, 1, /*bytes_to_read */
|
---|
1534 | (size_t) TAPE_BLOCK_SIZE,
|
---|
1535 | g_tape_stream) / 1024;
|
---|
1536 | if (g_sigpipe) {
|
---|
1537 | iamhere("Sigpipe occurred recently. I'll start a new tape.");
|
---|
1538 | fclose(fin);
|
---|
1539 | g_sigpipe = FALSE;
|
---|
1540 | start_to_write_to_next_tape(bkpinfo);
|
---|
1541 | write_backcatalog_to_tape(bkpinfo); // kinda-sorta recursive :)
|
---|
1542 | return (0);
|
---|
1543 | }
|
---|
1544 | #ifdef EXTRA_TAPE_CHECKSUMS
|
---|
1545 | for (i = 0; i < bytes_to_read; i++) {
|
---|
1546 | ch = datablock[i];
|
---|
1547 | crc16 = updcrcr(crc16, (unsigned) ch);
|
---|
1548 | crctt = updcrc(crctt, (unsigned) ch);
|
---|
1549 | }
|
---|
1550 | #endif
|
---|
1551 | }
|
---|
1552 | paranoid_fclose(fin);
|
---|
1553 | mr_asprintf(&checksum, "%04x%04x", crc16, crctt);
|
---|
1554 | /* BERLIOS: what does it do ??? */
|
---|
1555 | write_header_block_to_stream((off_t)g_current_media_number, checksum,
|
---|
1556 | BLK_STOP_FILE);
|
---|
1557 | mr_free(checksum);
|
---|
1558 | // log_it("File '%s' written to tape.", infile);
|
---|
1559 | return (retval);
|
---|
1560 | }
|
---|
1561 |
|
---|
1562 |
|
---|
1563 | /**
|
---|
1564 | * Write a header block to the opened stream (CD or tape).
|
---|
1565 | * @param length_of_incoming_file The length to store in the header block.
|
---|
1566 | * Usually matters only if this is a file-related header, in which case it should
|
---|
1567 | * be the length of the file that will follow.
|
---|
1568 | * @param filename The filename to store in the header block. Usually matters
|
---|
1569 | * only if this is a file-related header, in which case this should be the name
|
---|
1570 | * if the file that will follow.
|
---|
1571 | * @param control_char The type of header block this is (start-file, end-file, start-tape, ...)
|
---|
1572 | * @return 0 for success, nonzero for failure.
|
---|
1573 | */
|
---|
1574 | int
|
---|
1575 | write_header_block_to_stream(off_t length_of_incoming_file,
|
---|
1576 | char *filename, int control_char)
|
---|
1577 | {
|
---|
1578 | /*@ buffers **************************************************** */
|
---|
1579 | char tempblock[TAPE_BLOCK_SIZE];
|
---|
1580 | char *p;
|
---|
1581 |
|
---|
1582 | /*@ int ******************************************************** */
|
---|
1583 | int i;
|
---|
1584 |
|
---|
1585 | off_t olen;
|
---|
1586 |
|
---|
1587 | /*@ end vars *************************************************** */
|
---|
1588 |
|
---|
1589 |
|
---|
1590 | olen = length_of_incoming_file;
|
---|
1591 | p = strrchr(filename, '/'); /* Make 'em go, "Unnnh!" Oh wait, that was _Master_ P... */
|
---|
1592 | if (!p) {
|
---|
1593 | p = filename;
|
---|
1594 | } else {
|
---|
1595 | p++;
|
---|
1596 | }
|
---|
1597 | if (!g_tape_stream) {
|
---|
1598 | log_to_screen
|
---|
1599 | (_("You're not backing up to tape. Why write a tape header?"));
|
---|
1600 | return (1);
|
---|
1601 | }
|
---|
1602 | for (i = 0; i < (int) TAPE_BLOCK_SIZE; i++) {
|
---|
1603 | tempblock[i] = 0;
|
---|
1604 | }
|
---|
1605 | sprintf(tempblock + 6000 + control_char, "Mondolicious, baby");
|
---|
1606 | tempblock[7000] = control_char;
|
---|
1607 | memcpy(tempblock + 7001, (char *) &olen, sizeof(off_t));
|
---|
1608 | strcpy(tempblock + 1000, filename);
|
---|
1609 | g_tape_posK +=
|
---|
1610 | fwrite(tempblock, 1, (size_t) TAPE_BLOCK_SIZE,
|
---|
1611 | g_tape_stream) / 1024;
|
---|
1612 | mr_msg(6, "%s (fname=%s, size=%ld K)",
|
---|
1613 | marker_to_string(control_char), p,
|
---|
1614 | (long) length_of_incoming_file >> 10);
|
---|
1615 | return (0);
|
---|
1616 | }
|
---|
1617 |
|
---|
1618 |
|
---|
1619 | /**
|
---|
1620 | * Log (to screen) an erroneous marker, along with what it should have been.
|
---|
1621 | * @param should_be What we were expecting.
|
---|
1622 | * @param it_is What we got.
|
---|
1623 | */
|
---|
1624 | void wrong_marker(int should_be, int it_is)
|
---|
1625 | {
|
---|
1626 | /*@ buffer ***************************************************** */
|
---|
1627 | char *tmp = NULL;
|
---|
1628 |
|
---|
1629 |
|
---|
1630 | /*@ end vars *************************************************** */
|
---|
1631 | mr_asprintf(&tmp, _("Wrong marker! (Should be %s, is actually %s)"),
|
---|
1632 | marker_to_string(should_be), marker_to_string(it_is));
|
---|
1633 | log_to_screen(tmp);
|
---|
1634 | mr_free(tmp);
|
---|
1635 | }
|
---|
1636 |
|
---|
1637 | /* @} - end of streamGroup */
|
---|