[1] | 1 | /* libmondo-stream.c
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[128] | 2 | $Id: libmondo-stream.c 2704 2011-01-27 18:31:24Z bruno $
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[1] | 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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[2211] | 15 | #include "mr_mem.h"
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[1] | 16 | #include "mondostructures.h"
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| 17 | #include "libmondo-devices.h"
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[541] | 18 | #include "lib-common-externs.h"
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[1] | 19 | #include "libmondo-stream.h"
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| 20 | #include "libmondo-string-EXT.h"
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| 21 | #include "libmondo-files-EXT.h"
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[541] | 22 | #include "libmondo-gui-EXT.h"
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[1] | 23 | #include "libmondo-fork-EXT.h"
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| 24 | #include "libmondo-tools-EXT.h"
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| 25 | #include "libmondo-fifo-EXT.h"
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| 26 |
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| 27 | #define EXTRA_TAPE_CHECKSUMS
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[1934] | 28 | #define STR_HEADER "Mondolicious, baby"
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[1] | 29 |
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| 30 | /*@unused@*/
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[128] | 31 | //static char cvsid[] = "$Id: libmondo-stream.c 2704 2011-01-27 18:31:24Z bruno $";
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[1] | 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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[948] | 35 | extern char *g_getfacl;
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| 36 | extern char *g_getfattr;
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[1316] | 37 | extern char *MONDO_LOGFILE;
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[948] | 38 |
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[1645] | 39 | /* Reference to global bkpinfo */
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| 40 | extern struct s_bkpinfo *bkpinfo;
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| 41 |
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[1] | 42 | /**
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| 43 | * @addtogroup globalGroup
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| 44 | * @{
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| 45 | */
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| 46 | /**
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| 47 | * The file pointer for the opened tape/CD stream.
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| 48 | * Opened and closed by openin_tape(), openin_cdstream(),
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| 49 | * openout_tape(), openout_cdstream(), closein_tape(), closein_cdstream(),
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| 50 | * closeout_tape(), and closeout_cdstream().
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| 51 | */
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| 52 | FILE *g_tape_stream = NULL;
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| 53 |
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| 54 |
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| 55 | /**
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| 56 | * The position (in kilobytes) where we are on the tape.
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| 57 | */
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| 58 | long long g_tape_posK = 0;
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| 59 |
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| 60 | /**
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| 61 | * The current media number we're using. This value is 1-based.
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| 62 | */
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[128] | 63 | int g_current_media_number = -1;
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[1] | 64 |
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| 65 | /**
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| 66 | * The tape catalog that keeps track of files written to tape.
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| 67 | */
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| 68 | struct s_tapecatalog *g_tapecatalog;
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| 69 |
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| 70 | /* @} - end of globalGroup */
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| 71 |
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[1645] | 72 | int write_backcatalog_to_tape();
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[1] | 73 |
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| 74 |
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| 75 |
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| 76 |
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| 77 |
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| 78 | /**
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| 79 | * @addtogroup streamGroup
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| 80 | * @{
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| 81 | */
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| 82 | /**
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| 83 | * Close the global output file descriptor which Mondo has used to read
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| 84 | * from the CD stream.
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| 85 | * @param bkpinfo The backup information structure. Passed directly to closein_tape().
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| 86 | * @return 0 for success, nonzero for failure.
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| 87 | * @note This should be called by restore processes only.
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| 88 | */
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[1645] | 89 | int closein_cdstream()
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[1] | 90 | {
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[1645] | 91 | return (closein_tape());
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[1] | 92 | }
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| 93 |
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| 94 |
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| 95 | /**
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| 96 | * Close the global output file descriptor which Mondo has used to read
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| 97 | * from buffer or dd, which read from the tape.
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| 98 | * @param bkpinfo The backup information structure. Unused.
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| 99 | * @return 0 for success, nonzero for failure.
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| 100 | * @note This should be called by restore processes only.
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| 101 | * @note This function also works for cdstreams for now, but don't count on this behavior.
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| 102 | * @bug @p bkpinfo parameter is unused.
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| 103 | */
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[1645] | 104 | int closein_tape()
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[1] | 105 | {
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[128] | 106 | /*@ int's ******************************************************* */
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| 107 | int retval = 0;
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| 108 | int res = 0;
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| 109 | int ctrl_chr = '\0';
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[1] | 110 |
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[128] | 111 | /*@ buffers ***************************************************** */
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| 112 | char fname[MAX_STR_LEN];
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[1] | 113 |
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[128] | 114 | /*@ long long's ************************************************* */
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| 115 | long long size;
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| 116 | char *blk;
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| 117 | int i;
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[1] | 118 |
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[128] | 119 | blk = (char *) malloc(256 * 1024);
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[1] | 120 |
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[128] | 121 | log_it("closein_tape() -- entering");
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| 122 | res = read_header_block_from_stream(&size, fname, &ctrl_chr);
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| 123 | retval += res;
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| 124 | if (ctrl_chr != BLK_END_OF_BACKUP) {
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| 125 | wrong_marker(BLK_END_OF_BACKUP, ctrl_chr);
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| 126 | }
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| 127 | res = read_header_block_from_stream(&size, fname, &ctrl_chr);
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| 128 | retval += res;
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| 129 | if (ctrl_chr != BLK_END_OF_TAPE) {
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| 130 | wrong_marker(BLK_END_OF_TAPE, ctrl_chr);
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| 131 | }
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| 132 | for (i = 0; i < 8 && !feof(g_tape_stream); i++) {
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| 133 | (void) fread(blk, 1, 256 * 1024, g_tape_stream);
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| 134 | }
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| 135 | sleep(1);
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[2376] | 136 | sync();
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[128] | 137 | sleep(1);
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| 138 | paranoid_pclose(g_tape_stream);
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| 139 | log_it("closein_tape() -- leaving");
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| 140 | if (!bkpinfo->please_dont_eject) {
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| 141 | eject_device(bkpinfo->media_device);
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| 142 | }
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| 143 | paranoid_free(blk);
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| 144 | paranoid_free(g_tapecatalog);
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| 145 | return (retval);
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[1] | 146 | }
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| 147 |
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| 148 |
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| 149 |
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| 150 | /**
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| 151 | * Close the global output file descriptor which Mondo has been using to write
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| 152 | * to the tape device (via buffer or dd).
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| 153 | * @param bkpinfo The backup information structure. @c bkpinfo->media_size is the only field used.
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| 154 | * @return 0 for success, nonzero for failure.
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| 155 | * @note This should be called by backup processes only.
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| 156 | */
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[1645] | 157 | int closeout_tape()
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[1] | 158 | {
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[128] | 159 | /*@ int's ******************************************************* */
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| 160 | int retval = 0;
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[1] | 161 | // int res = 0;
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| 162 | // int ctrl_chr = '\0';
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| 163 |
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[128] | 164 | /*@ buffers ***************************************************** */
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[1] | 165 | // char fname[MAX_STR_LEN];
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| 166 |
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[128] | 167 | /*@ long long's ************************************************* */
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[1] | 168 | // long long size;
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[128] | 169 | int i;
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| 170 | char *blk;
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[1] | 171 |
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[128] | 172 | blk = (char *) malloc(256 * 1024);
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[1] | 173 |
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[128] | 174 | sleep(1);
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[2376] | 175 | sync();
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[128] | 176 | sleep(1);
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| 177 | log_it("closeout_tape() -- entering");
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| 178 | retval +=
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[684] | 179 | write_header_block_to_stream((off_t)0, "end-of-backup",
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[128] | 180 | BLK_END_OF_BACKUP);
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[684] | 181 | retval += write_header_block_to_stream((off_t)0, "end-of-tape", BLK_END_OF_TAPE); /* just in case */
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[1] | 182 | /* write 1MB of crap */
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[128] | 183 | for (i = 0; i < 256 * 1024; i++) {
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| 184 | blk[i] = (int) (random() & 0xFF);
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| 185 | }
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| 186 | for (i = 0; i < 4 * 8; i++) {
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| 187 | (void) fwrite(blk, 1, 256 * 1024, g_tape_stream);
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| 188 | if (should_we_write_to_next_tape
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[684] | 189 | (bkpinfo->media_size[g_current_media_number], (off_t)256 * 1024)) {
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[1645] | 190 | start_to_write_to_next_tape();
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[128] | 191 | }
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| 192 | }
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[1] | 193 | /* write 1MB of zeroes */
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| 194 | /*
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| 195 | for (i = 0; i < 256*1024; i++)
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| 196 | {
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| 197 | blk[i] = 0;
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| 198 | }
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| 199 | for (i = 0; i < 4; i++)
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| 200 | {
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| 201 | fwrite (blk, 1, 256*1024, g_tape_stream);
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| 202 | if (should_we_write_to_next_tape (bkpinfo->media_size[g_current_media_number], 256*1024))
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| 203 | {
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[1645] | 204 | start_to_write_to_next_tape ();
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[1] | 205 | }
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| 206 | }
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| 207 | */
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[128] | 208 | sleep(2);
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| 209 | paranoid_pclose(g_tape_stream);
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| 210 | log_it("closeout_tape() -- leaving");
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| 211 | for (i = 0; i < g_tapecatalog->entries; i++) {
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| 212 | log_it("i=%d type=%s num=%d aux=%ld posK=%lld", i,
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| 213 | (g_tapecatalog->el[i].type ==
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| 214 | fileset) ? "fileset" : "bigslice",
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| 215 | g_tapecatalog->el[i].number, g_tapecatalog->el[i].aux,
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| 216 | g_tapecatalog->el[i].tape_posK);
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| 217 | }
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| 218 | paranoid_free(blk);
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| 219 | paranoid_free(g_tapecatalog);
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| 220 | return (retval);
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[1] | 221 | }
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| 222 |
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| 223 |
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| 224 |
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[128] | 225 | bool mt_says_tape_exists(char *dev)
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[1] | 226 | {
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[2264] | 227 | char *command = NULL;
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[128] | 228 | int res;
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[1] | 229 |
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[2323] | 230 | mr_asprintf(command, "mt -f %s status", dev);
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[128] | 231 | res = run_program_and_log_output(command, 1);
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[2264] | 232 | mr_free(command);
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| 233 |
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[128] | 234 | if (res) {
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| 235 | return (FALSE);
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| 236 | } else {
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| 237 | return (TRUE);
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| 238 | }
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[1] | 239 | }
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| 240 |
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| 241 |
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| 242 |
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| 243 | /**
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[2303] | 244 | * Determine the name of the tape device. Tries the SCSI tape for
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[1] | 245 | * this platform, then the IDE tape, then "/dev/st0", then "/dev/osst0".
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[2303] | 246 | * @return the allocated tape string if success, NULL if failure
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[1] | 247 | */
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[2332] | 248 | char *mr_find_tape_device(void) {
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| 249 |
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[2303] | 250 | char *tmp = NULL;
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[2264] | 251 | char *command = NULL;
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[2303] | 252 | char *cdr_exe = NULL;
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| 253 | char *dev = NULL;
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[128] | 254 | int res;
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[1] | 255 |
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[128] | 256 | log_to_screen("I am looking for your tape streamer. Please wait.");
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[2332] | 257 |
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[2331] | 258 | tmp = find_home_of_exe("cdrecord");
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| 259 | if (tmp) {
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| 260 | mr_asprintf(cdr_exe, "cdrecord");
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[128] | 261 | } else {
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[2331] | 262 | mr_asprintf(cdr_exe, "dvdrecord");
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[1] | 263 | }
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[2331] | 264 | mr_free(tmp);
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| 265 |
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[2323] | 266 | mr_asprintf(command, "%s -scanbus 2> /dev/null | grep -i tape | wc -l", cdr_exe);
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[2704] | 267 | tmp = call_program_and_get_last_line_of_output(command,TRUE);
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[2264] | 268 | mr_free(command);
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| 269 |
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[128] | 270 | if (atoi(tmp) != 1) {
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[2303] | 271 | log_it("Either too few or too many tape streamers for me to detect...");
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[2332] | 272 | mr_asprintf(dev, "%s", VANILLA_SCSI_TAPE);
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[2303] | 273 | mr_free(tmp);
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| 274 | return(dev);
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[128] | 275 | }
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[2303] | 276 | mr_free(tmp);
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| 277 |
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[2323] | 278 | mr_asprintf(command, "%s -scanbus 2> /dev/null | tr -s '\t' ' ' | grep \"[0-9]*,[0-9]*,[0-9]*\" | grep -v \"[0-9]*) \\*\" | grep -i TAPE | cut -d' ' -f2 | head -n1", cdr_exe);
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[2704] | 279 | tmp = call_program_and_get_last_line_of_output(command,TRUE);
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[2264] | 280 | mr_free(command);
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| 281 |
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[128] | 282 | if (strlen(tmp) < 2) {
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| 283 | log_it("Could not find tape device");
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[2303] | 284 | mr_free(tmp);
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[2331] | 285 | return(NULL);
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[128] | 286 | }
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[2303] | 287 | mr_free(tmp);
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[2331] | 288 |
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[2323] | 289 | mr_asprintf(command, "%s -scanbus 2> /dev/null | tr -s '\t' ' ' | grep \"[0-9]*,[0-9]*,[0-9]*\" | grep -v \"[0-9]*) \\*\" | grep -i TAPE | cut -d' ' -f3 | cut -d')' -f1 | head -n1", cdr_exe);
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[2303] | 290 | mr_free(cdr_exe);
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[2704] | 291 | tmp = call_program_and_get_last_line_of_output(command,TRUE);
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[2264] | 292 | mr_free(command);
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| 293 |
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[2325] | 294 | mr_asprintf(dev, "%s", "/dev/st");
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[2303] | 295 | mr_strcat(dev, tmp); // e.g. '/dev/st0' becomes '/dev/stN'
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| 296 | mr_free(tmp);
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[2331] | 297 |
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[128] | 298 | res = 0;
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| 299 | if (!mt_says_tape_exists(dev)) {
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[2303] | 300 | mr_free(dev);
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[2332] | 301 | mr_asprintf(dev, "%s", ALT_TAPE);
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[128] | 302 | if (!mt_says_tape_exists(dev)) {
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| 303 | log_it("Cannot openin %s", dev);
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[2303] | 304 | mr_free(dev);
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[2332] | 305 | mr_asprintf(dev, "/dev/st0");
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[128] | 306 | if (!mt_says_tape_exists(dev)) {
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| 307 | log_it("Cannot openin %s", dev);
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[2303] | 308 | mr_free(dev);
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[2332] | 309 | mr_asprintf(dev, "/dev/osst0");
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[128] | 310 | if (!mt_says_tape_exists(dev)) {
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[2325] | 311 | mr_free(dev);
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[128] | 312 | res++;
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| 313 | } else {
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| 314 | res = 0;
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| 315 | }
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| 316 | }
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| 317 | }
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| 318 | }
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[1] | 319 |
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[2325] | 320 | if (dev) {
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| 321 | log_it("At this point, dev = %s and res = %d", dev, res);
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| 322 | } else {
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| 323 | log_it("At this point, dev is NULL and res = %d", dev, res);
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| 324 | }
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[128] | 325 |
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[2704] | 326 | tmp = call_program_and_get_last_line_of_output(" cdrecord -scanbus 2> /dev/null | tr -s '\t' ' ' | grep \"[0-9]*,[0-9]*,[0-9]*\" | grep -v \"[0-9]*) \\*\" | grep -i TAPE | awk '{for(i=1; i<NF; i++) { if (index($i, \"GB\")>0) { print $i;};};};'",TRUE);
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[1] | 327 |
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[128] | 328 | if (mt_says_tape_exists(dev)) {
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| 329 | res = 0;
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| 330 | } else {
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| 331 | log_it("Turning %s", dev);
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[2303] | 332 | mr_free(tmp);
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[2331] | 333 | mr_asprintf(tmp, "%s", (strrchr(dev, '/') != NULL) ? strrchr(dev, '/') : dev);
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[2303] | 334 | mr_free(dev);
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[2332] | 335 | mr_asprintf(dev, "/dev/os%s", tmp);
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[128] | 336 | log_it("...into %s", dev);
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| 337 | if (mt_says_tape_exists(dev)) {
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| 338 | res = 0;
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| 339 | } else {
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[2325] | 340 | mr_free(dev);
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[128] | 341 | res++;
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| 342 | }
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| 343 | }
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[1] | 344 |
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[2331] | 345 | if (dev) {
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| 346 | log_it("At this new point, dev = %s and res = %d", dev, res);
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| 347 | } else {
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[2332] | 348 | log_it("At this new point, dev is NULL and res = %d", res);
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[128] | 349 | }
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[1] | 350 |
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[128] | 351 | if (strlen(tmp) < 2) {
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| 352 | log_it("Warning - size of tape unknown");
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| 353 | }
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[2303] | 354 | mr_free(tmp);
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[2331] | 355 | return(dev);
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[1] | 356 | }
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| 357 |
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| 358 |
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[1645] | 359 | int read_EXAT_files_from_tape(long long *ptmp_size, char *tmp_fname,
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[128] | 360 | int *pctrl_chr, char *xattr_fname,
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| 361 | char *acl_fname)
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[1] | 362 | {
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[128] | 363 | int res = 0;
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[955] | 364 | char *fname = (char *)&res; /* Should NOT be NULL */
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[1940] | 365 | char *tmp = NULL;
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[128] | 366 |
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[1933] | 367 | // xattr
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[948] | 368 | if (g_getfattr) {
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[955] | 369 | res = read_header_block_from_stream(ptmp_size, fname, pctrl_chr);
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[948] | 370 | if (*pctrl_chr != BLK_START_EXAT_FILE) {
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| 371 | wrong_marker(BLK_START_EXAT_FILE, *pctrl_chr);
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| 372 | }
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[1940] | 373 | if (strstr(fname, "xattr") == NULL) {
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[2323] | 374 | mr_asprintf(tmp,"Wrong order expected xattr, got %s, sunshine.", fname);
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[1940] | 375 | fatal_error(tmp);
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[948] | 376 | }
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[1645] | 377 | read_file_from_stream_to_file(xattr_fname, *ptmp_size);
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[1940] | 378 | res = read_header_block_from_stream(ptmp_size, fname, pctrl_chr);
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[948] | 379 | if (*pctrl_chr != BLK_STOP_EXAT_FILE) {
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| 380 | wrong_marker(BLK_STOP_EXAT_FILE, *pctrl_chr);
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| 381 | }
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| 382 | log_msg(1, "Got xattr");
|
---|
[1940] | 383 | res = read_header_block_from_stream(ptmp_size, fname, pctrl_chr);
|
---|
[1933] | 384 | if (*pctrl_chr != BLK_STOP_EXTENDED_ATTRIBUTES) {
|
---|
| 385 | wrong_marker(BLK_STOP_EXTENDED_ATTRIBUTES, *pctrl_chr);
|
---|
| 386 | }
|
---|
[1940] | 387 | res = read_header_block_from_stream(ptmp_size, fname, pctrl_chr);
|
---|
[1943] | 388 | if (*pctrl_chr == BLK_START_AN_AFIO_OR_SLICE) {
|
---|
[1933] | 389 | log_msg(1, "No acl attributes found, skipping to afio files");
|
---|
| 390 | return(0);
|
---|
| 391 | } else {
|
---|
[1943] | 392 | if (*pctrl_chr != BLK_START_EXTENDED_ATTRIBUTES) {
|
---|
[1933] | 393 | wrong_marker(BLK_START_EXTENDED_ATTRIBUTES, *pctrl_chr);
|
---|
| 394 | }
|
---|
| 395 | }
|
---|
[128] | 396 | }
|
---|
[1933] | 397 | // acl
|
---|
[948] | 398 | if (g_getfacl) {
|
---|
[955] | 399 | res = read_header_block_from_stream(ptmp_size, fname, pctrl_chr);
|
---|
[948] | 400 | if (*pctrl_chr != BLK_START_EXAT_FILE) {
|
---|
| 401 | wrong_marker(BLK_START_EXAT_FILE, *pctrl_chr);
|
---|
| 402 | }
|
---|
[1940] | 403 | if (strstr(fname, "acl") == NULL) {
|
---|
[2323] | 404 | mr_asprintf(tmp,"Wrong order expected acl, got %s, sunshine.", fname);
|
---|
[1940] | 405 | fatal_error(tmp);
|
---|
| 406 | }
|
---|
[1645] | 407 | read_file_from_stream_to_file(acl_fname, *ptmp_size);
|
---|
[1940] | 408 | res = read_header_block_from_stream(ptmp_size, fname, pctrl_chr);
|
---|
[948] | 409 | if (*pctrl_chr != BLK_STOP_EXAT_FILE) {
|
---|
| 410 | wrong_marker(BLK_STOP_EXAT_FILE, *pctrl_chr);
|
---|
| 411 | }
|
---|
[1940] | 412 | res = read_header_block_from_stream(ptmp_size, fname, pctrl_chr);
|
---|
[948] | 413 | if (*pctrl_chr != BLK_STOP_EXTENDED_ATTRIBUTES) {
|
---|
| 414 | wrong_marker(BLK_STOP_EXTENDED_ATTRIBUTES, *pctrl_chr);
|
---|
| 415 | }
|
---|
| 416 | log_msg(1, "Got acl");
|
---|
[128] | 417 | }
|
---|
[1933] | 418 | // tarball itself
|
---|
[128] | 419 | res = read_header_block_from_stream(ptmp_size, tmp_fname, pctrl_chr);
|
---|
[1933] | 420 | log_msg(1, "End of extended attributes, now looking for afioball");
|
---|
| 421 | return (0);
|
---|
[1] | 422 | }
|
---|
| 423 |
|
---|
| 424 |
|
---|
[1645] | 425 | int write_EXAT_files_to_tape(char *xattr_fname,
|
---|
[128] | 426 | char *acl_fname)
|
---|
[1] | 427 | {
|
---|
[128] | 428 | int res = 0;
|
---|
[948] | 429 | if (g_getfattr) {
|
---|
[955] | 430 | // xattr
|
---|
[948] | 431 | write_header_block_to_stream(length_of_file(xattr_fname), xattr_fname,
|
---|
| 432 | BLK_START_EXTENDED_ATTRIBUTES);
|
---|
| 433 | write_header_block_to_stream(length_of_file(xattr_fname), xattr_fname,
|
---|
| 434 | BLK_START_EXAT_FILE);
|
---|
[1645] | 435 | write_file_to_stream_from_file(xattr_fname);
|
---|
[948] | 436 | write_header_block_to_stream((off_t)-1, xattr_fname, BLK_STOP_EXAT_FILE);
|
---|
[1933] | 437 | write_header_block_to_stream(length_of_file(xattr_fname), xattr_fname,
|
---|
| 438 | BLK_STOP_EXTENDED_ATTRIBUTES);
|
---|
[948] | 439 | }
|
---|
| 440 | if (g_getfacl) {
|
---|
[955] | 441 | // acl
|
---|
[948] | 442 | write_header_block_to_stream(length_of_file(acl_fname), acl_fname,
|
---|
[1933] | 443 | BLK_START_EXTENDED_ATTRIBUTES);
|
---|
| 444 | write_header_block_to_stream(length_of_file(acl_fname), acl_fname,
|
---|
[948] | 445 | BLK_START_EXAT_FILE);
|
---|
[1645] | 446 | write_file_to_stream_from_file(acl_fname);
|
---|
[948] | 447 | write_header_block_to_stream((off_t)-1, acl_fname, BLK_STOP_EXAT_FILE);
|
---|
[1933] | 448 | write_header_block_to_stream(length_of_file(acl_fname), acl_fname,
|
---|
[948] | 449 | BLK_STOP_EXTENDED_ATTRIBUTES);
|
---|
| 450 | }
|
---|
[128] | 451 | return (res);
|
---|
[1] | 452 | }
|
---|
| 453 |
|
---|
| 454 |
|
---|
| 455 |
|
---|
| 456 |
|
---|
| 457 | /**
|
---|
| 458 | * Tell the user to insert tape @p tapeno and wait for it to settle (5 seconds).
|
---|
| 459 | * @param tapeno The tape number to insist on.
|
---|
| 460 | * @bug There is currently no way to actually verify that the user has actually
|
---|
| 461 | * inserted the right tape.
|
---|
| 462 | */
|
---|
| 463 | void insist_on_this_tape_number(int tapeno)
|
---|
| 464 | {
|
---|
[128] | 465 | int i;
|
---|
[2264] | 466 | char *tmp = NULL;
|
---|
[1] | 467 |
|
---|
[128] | 468 | log_it("Insisting on tape #%d", tapeno);
|
---|
| 469 | if (g_current_media_number != tapeno) {
|
---|
[2323] | 470 | mr_asprintf(tmp, "When the tape drive goes quiet, please insert volume %d in this series.", tapeno);
|
---|
[128] | 471 | popup_and_OK(tmp);
|
---|
[2264] | 472 | mr_free(tmp);
|
---|
[541] | 473 | open_evalcall_form("Waiting while the tape drive settles");
|
---|
[128] | 474 | } else {
|
---|
[541] | 475 | open_evalcall_form("Waiting while the tape drive rewinds");
|
---|
[128] | 476 | }
|
---|
[1] | 477 |
|
---|
[128] | 478 | for (i = 0; i <= 100; i += 2) {
|
---|
| 479 | usleep(100000);
|
---|
| 480 | update_evalcall_form(i);
|
---|
| 481 | }
|
---|
| 482 | close_evalcall_form();
|
---|
| 483 | log_it("I assume user has inserted it. They _say_ they have...");
|
---|
| 484 | g_current_media_number = tapeno;
|
---|
[1] | 485 |
|
---|
[128] | 486 | // log_it("g_current_media_number = %d", g_current_media_number);
|
---|
| 487 | log_it("OK, I've finished insisting. On with the revelry.");
|
---|
[1] | 488 | }
|
---|
| 489 |
|
---|
| 490 |
|
---|
| 491 |
|
---|
| 492 |
|
---|
| 493 | /**
|
---|
| 494 | * Debugging aid - log the offset we're at on the tape (reading or writing).
|
---|
| 495 | */
|
---|
[128] | 496 | void log_tape_pos(void)
|
---|
[1] | 497 | {
|
---|
[128] | 498 | /*@ buffers ***************************************************** */
|
---|
[1] | 499 |
|
---|
| 500 |
|
---|
[128] | 501 | /*@ end vars *************************************************** */
|
---|
[1] | 502 |
|
---|
[128] | 503 | log_it("Tape position -- %ld KB (%ld MB)", (long) g_tape_posK,
|
---|
| 504 | (long) g_tape_posK >> 10);
|
---|
[1] | 505 | }
|
---|
| 506 |
|
---|
| 507 |
|
---|
| 508 |
|
---|
| 509 |
|
---|
| 510 | /**
|
---|
| 511 | * Add a file to a collection of recently archived filesets/slices.
|
---|
| 512 | * The type is determined by the filename: if it contains ".afio." it is
|
---|
| 513 | * assumed to be a fileset, otherwise if it contains "slice" it's a slice,
|
---|
| 514 | * otherwise we generate a fatal_error().
|
---|
| 515 | * @param latest_fname The file to place in the collection.
|
---|
| 516 | * @return 0, always.
|
---|
| 517 | * @bug Return value is redundant.
|
---|
| 518 | * @bug The detection won't work for uncompressed afioballs (they end in ".afio", no dot afterwards). // Not true. They end in '.' -Hugo
|
---|
| 519 | */
|
---|
[2321] | 520 | int maintain_collection_of_recent_archives(char *latest_fname)
|
---|
[1] | 521 | {
|
---|
[128] | 522 | long long final_alleged_writeK, final_projected_certain_writeK,
|
---|
| 523 | final_actually_certain_writeK = 0, cposK, bufsize_K;
|
---|
| 524 | int last, curr, i;
|
---|
| 525 | t_archtype type = other;
|
---|
[2264] | 526 | char *command = NULL;
|
---|
| 527 | char *tmpdir = NULL;
|
---|
| 528 | char *old_fname = NULL;
|
---|
[1] | 529 |
|
---|
[128] | 530 | bufsize_K = (long long) (1024LL * (1 + g_tape_buffer_size_MB));
|
---|
| 531 | if (strstr(latest_fname, ".afio.") || strstr(latest_fname, ".star.")) {
|
---|
| 532 | type = fileset;
|
---|
| 533 | } else if (strstr(latest_fname, "slice")) {
|
---|
| 534 | type = biggieslice;
|
---|
| 535 | } else {
|
---|
| 536 | log_it("fname = %s", latest_fname);
|
---|
[2321] | 537 | fatal_error("Unknown type. Internal error in maintain_collection_of_recent_archives()");
|
---|
[128] | 538 | }
|
---|
[2323] | 539 | mr_asprintf(tmpdir, "%s/tmpfs/backcatalog", bkpinfo->tmpdir);
|
---|
[128] | 540 | mkdir(tmpdir, 0x700);
|
---|
[2323] | 541 | mr_asprintf(command, "cp -f %s %s", latest_fname, tmpdir);
|
---|
[128] | 542 | if (run_program_and_log_output(command, 6)) {
|
---|
| 543 | log_it("Warning - failed to copy %s to backcatalog at %s",
|
---|
| 544 | latest_fname, tmpdir);
|
---|
| 545 | }
|
---|
[2264] | 546 | mr_free(command);
|
---|
| 547 |
|
---|
[128] | 548 | last = g_tapecatalog->entries - 1;
|
---|
| 549 | if (last <= 0) {
|
---|
[2230] | 550 | log_it("Too early to start deleting from collection.");
|
---|
[2264] | 551 | mr_free(tmpdir);
|
---|
[128] | 552 | return (0);
|
---|
| 553 | }
|
---|
| 554 | final_alleged_writeK = g_tapecatalog->el[last].tape_posK;
|
---|
| 555 | final_projected_certain_writeK = final_alleged_writeK - bufsize_K;
|
---|
| 556 | for (curr = last; curr >= 0; curr--) {
|
---|
| 557 | cposK = g_tapecatalog->el[curr].tape_posK;
|
---|
| 558 | if (cposK < final_projected_certain_writeK) {
|
---|
| 559 | final_actually_certain_writeK = cposK;
|
---|
| 560 | break;
|
---|
| 561 | }
|
---|
| 562 | }
|
---|
| 563 | if (curr < 0) {
|
---|
[2230] | 564 | log_it("Not far enough into tape to start deleting old archives from collection.");
|
---|
[2264] | 565 | mr_free(tmpdir);
|
---|
[128] | 566 | return (0);
|
---|
| 567 | }
|
---|
[1] | 568 |
|
---|
[128] | 569 | for (i = curr - 1; i >= 0 && curr - i < 10; i--) {
|
---|
[2323] | 570 | mr_asprintf(old_fname, "%s/%s", tmpdir, g_tapecatalog->el[i].fname);
|
---|
[128] | 571 | unlink(old_fname);
|
---|
[2264] | 572 | mr_free(old_fname);
|
---|
[128] | 573 | }
|
---|
[2264] | 574 | mr_free(tmpdir);
|
---|
[128] | 575 | return (0);
|
---|
[1] | 576 | }
|
---|
| 577 |
|
---|
| 578 |
|
---|
| 579 |
|
---|
| 580 |
|
---|
| 581 | /**
|
---|
| 582 | * Open the CD stream for input.
|
---|
| 583 | * @param bkpinfo The backup information structure. Passed to openin_tape().
|
---|
| 584 | * @return 0 for success, nonzero for failure.
|
---|
| 585 | * @note Equivalent to openin_tape() for now, but don't count on this behavior.
|
---|
| 586 | */
|
---|
[1645] | 587 | int openin_cdstream()
|
---|
[1] | 588 | {
|
---|
[1645] | 589 | return (openin_tape());
|
---|
[1] | 590 | }
|
---|
| 591 |
|
---|
| 592 | /**
|
---|
| 593 | * FIFO used to read/write to the tape device.
|
---|
| 594 | * @bug This seems obsolete now that we call an external @c buffer program. Please look onto this.
|
---|
| 595 | */
|
---|
| 596 | char g_tape_fifo[MAX_STR_LEN];
|
---|
| 597 |
|
---|
| 598 |
|
---|
| 599 |
|
---|
[1954] | 600 | int set_tape_block_size_with_mt(long internal_tape_block_size)
|
---|
[1] | 601 | {
|
---|
[2264] | 602 | char *tmp = NULL;
|
---|
[128] | 603 | int res;
|
---|
[1] | 604 |
|
---|
[2325] | 605 | if (bkpinfo->media_device == NULL) {
|
---|
| 606 | return(1);
|
---|
| 607 | }
|
---|
| 608 |
|
---|
[1954] | 609 | if (strncmp(bkpinfo->media_device, "/dev/", 5)) {
|
---|
[2325] | 610 | log_msg(1, "Not using 'mt setblk'. This isn't an actual /dev entry.");
|
---|
[128] | 611 | return (0);
|
---|
| 612 | }
|
---|
[2323] | 613 | mr_asprintf(tmp, "mt -f %s setblk %ld", bkpinfo->media_device, internal_tape_block_size);
|
---|
[128] | 614 | res = run_program_and_log_output(tmp, 3);
|
---|
[2264] | 615 | mr_free(tmp);
|
---|
[128] | 616 | return (res);
|
---|
[1] | 617 | }
|
---|
| 618 |
|
---|
[1951] | 619 | /**
|
---|
| 620 | * Return the non-rewinding device when passed the normal one
|
---|
| 621 | * @param tapedev The tape device to open for writing.
|
---|
| 622 | * @note the caller needs to free the string returned
|
---|
| 623 | */
|
---|
| 624 | char *get_non_rewind_dev(char *tapedev)
|
---|
| 625 | {
|
---|
[1] | 626 |
|
---|
[1951] | 627 | char *ntapedev = NULL;
|
---|
| 628 | char *p = NULL;
|
---|
| 629 | char *q = NULL;
|
---|
| 630 | char *r = NULL;
|
---|
| 631 |
|
---|
| 632 | ntapedev = (char *)malloc(strlen(tapedev)+sizeof(char));
|
---|
| 633 | p = strrchr(tapedev,'/');
|
---|
| 634 | if (p == NULL) {
|
---|
| 635 | log_it("Didn't find a '/' in %s",tapedev);
|
---|
| 636 | return(NULL);
|
---|
| 637 | }
|
---|
| 638 |
|
---|
| 639 | /* Copy tapedev content up to the last / */
|
---|
| 640 | q = tapedev;
|
---|
| 641 | r = ntapedev;
|
---|
| 642 | while (q != p) {
|
---|
| 643 | *r = *q;
|
---|
| 644 | r++;
|
---|
| 645 | q++;
|
---|
| 646 | }
|
---|
| 647 | /* Copy the '/' */
|
---|
| 648 | *r = *q;
|
---|
| 649 | r++;
|
---|
| 650 | q++;
|
---|
| 651 | /* Adds a 'n' - non-rewinding */
|
---|
| 652 | *r = 'n';
|
---|
| 653 | r++;
|
---|
| 654 | /* Copy the rest of tapedev */
|
---|
| 655 | while (*q != '\0') {
|
---|
| 656 | *r = *q;
|
---|
| 657 | r++;
|
---|
| 658 | q++;
|
---|
| 659 | }
|
---|
| 660 | *r = '\0';
|
---|
| 661 | if (mt_says_tape_exists(ntapedev)) {
|
---|
| 662 | log_it("Non-rewinding tape device is %s",ntapedev);
|
---|
| 663 | } else {
|
---|
| 664 | log_it("Unable to find non-rewinding tape device.");
|
---|
| 665 | ntapedev = NULL;
|
---|
| 666 | }
|
---|
| 667 | return(ntapedev);
|
---|
| 668 | }
|
---|
| 669 |
|
---|
| 670 |
|
---|
| 671 |
|
---|
[1949] | 672 | /**
|
---|
| 673 | * Handle OBDR if we were asked to do so
|
---|
[1954] | 674 | * @param tapedev The tape device to open for reading.
|
---|
[1949] | 675 | */
|
---|
[1968] | 676 | int skip_obdr(void)
|
---|
[1949] | 677 | {
|
---|
| 678 | char *command = NULL;
|
---|
[1955] | 679 | int res = 0;
|
---|
[1] | 680 |
|
---|
[2325] | 681 | if (bkpinfo->media_device == NULL) {
|
---|
| 682 | return(1);
|
---|
| 683 | }
|
---|
| 684 |
|
---|
[1955] | 685 | log_it("Skipping OBDR headers");
|
---|
[2323] | 686 | mr_asprintf(command, "mt -f %s rewind",bkpinfo->media_device);
|
---|
[1962] | 687 | res = run_program_and_log_output(command, 1);
|
---|
| 688 | paranoid_free(command);
|
---|
| 689 |
|
---|
[2323] | 690 | mr_asprintf(command, "mt -f %s fsf 2",bkpinfo->media_device);
|
---|
[1955] | 691 | res = run_program_and_log_output(command, 1);
|
---|
[1949] | 692 | paranoid_free(command);
|
---|
| 693 |
|
---|
[1954] | 694 | set_tape_block_size_with_mt(bkpinfo->internal_tape_block_size);
|
---|
[1955] | 695 | return(res);
|
---|
[1949] | 696 | }
|
---|
| 697 |
|
---|
[1954] | 698 | /**
|
---|
| 699 | * Handle OBDR if we were asked to do so
|
---|
| 700 | * @param tapedev The tape device to open for writing.
|
---|
| 701 | * @return 0 for success, nonzero for failure.
|
---|
| 702 | * @note This should be called ONLY from backup processes. It will OVERWRITE ANY
|
---|
| 703 | * EXISTING DATA on the tape!
|
---|
| 704 | */
|
---|
[1968] | 705 | int create_obdr(void)
|
---|
[1949] | 706 | {
|
---|
| 707 |
|
---|
| 708 | char *command = NULL;
|
---|
| 709 | int res = 0;
|
---|
| 710 |
|
---|
[2325] | 711 | if (bkpinfo->media_device == NULL) {
|
---|
| 712 | return(1);
|
---|
| 713 | }
|
---|
| 714 |
|
---|
[1955] | 715 | log_it("Creating OBDR headers");
|
---|
[1949] | 716 | /* OBDR: First block 10 kB of zero bs = 512 */
|
---|
[2323] | 717 | mr_asprintf(command, "mt -f %s compression off",bkpinfo->media_device);
|
---|
[1949] | 718 | res = run_program_and_log_output(command, 1);
|
---|
| 719 | paranoid_free(command);
|
---|
| 720 |
|
---|
[2323] | 721 | mr_asprintf(command, "mt -f %s rewind",bkpinfo->media_device);
|
---|
[1955] | 722 | res += run_program_and_log_output(command, 1);
|
---|
[1949] | 723 | paranoid_free(command);
|
---|
| 724 |
|
---|
[1954] | 725 | set_tape_block_size_with_mt(512);
|
---|
[1949] | 726 |
|
---|
[2323] | 727 | mr_asprintf(command, "dd if=/dev/zero of=%s bs=512 count=20",bkpinfo->media_device);
|
---|
[1955] | 728 | res += run_program_and_log_output(command, 1);
|
---|
[1949] | 729 | paranoid_free(command);
|
---|
| 730 |
|
---|
| 731 | /* OBDR: then ISO boot image bs = 2048 */
|
---|
[1954] | 732 | set_tape_block_size_with_mt(2048);
|
---|
[1949] | 733 |
|
---|
[2323] | 734 | mr_asprintf(command, "dd if=%s of=%s bs=2048",MINDI_CACHE"/mondorescue.iso",bkpinfo->media_device);
|
---|
[1955] | 735 | res += run_program_and_log_output(command, 1);
|
---|
[1949] | 736 | paranoid_free(command);
|
---|
| 737 |
|
---|
[1954] | 738 | set_tape_block_size_with_mt(bkpinfo->internal_tape_block_size);
|
---|
[1955] | 739 | return(res);
|
---|
[1949] | 740 | }
|
---|
| 741 |
|
---|
| 742 |
|
---|
[1] | 743 | /**
|
---|
| 744 | * Open the tape device for input.
|
---|
| 745 | * @param bkpinfo The backup information structure. Fields used:
|
---|
| 746 | * - @c bkpinfo->media_device
|
---|
| 747 | * - @c bkpinfo->tmpdir
|
---|
| 748 | * @return 0 for success, nonzero for failure.
|
---|
| 749 | * @note This will also work with a cdstream for now, but don't count on this behavior.
|
---|
| 750 | */
|
---|
[1645] | 751 | int openin_tape()
|
---|
[1] | 752 | {
|
---|
[128] | 753 | /*@ buffer ***************************************************** */
|
---|
| 754 | char fname[MAX_STR_LEN];
|
---|
| 755 | char *datablock;
|
---|
[2264] | 756 | char *tmp = NULL;
|
---|
[128] | 757 | char old_cwd[MAX_STR_LEN];
|
---|
[2264] | 758 | char *outfname = NULL;
|
---|
[128] | 759 | /*@ int ******************************************************* */
|
---|
| 760 | int i;
|
---|
| 761 | int j;
|
---|
[1955] | 762 | int res = 0;
|
---|
[128] | 763 | long length, templong;
|
---|
| 764 | size_t k;
|
---|
| 765 | int retval = 0;
|
---|
| 766 | int ctrl_chr;
|
---|
[1] | 767 |
|
---|
[128] | 768 | /*@ long long ************************************************* */
|
---|
| 769 | long long size;
|
---|
[1] | 770 |
|
---|
[128] | 771 | /*@ pointers ************************************************** */
|
---|
| 772 | FILE *fout;
|
---|
[1] | 773 |
|
---|
[128] | 774 | /*@ end vars *************************************************** */
|
---|
[1] | 775 |
|
---|
[2325] | 776 | g_tapecatalog = mr_malloc(sizeof(struct s_tapecatalog));
|
---|
[128] | 777 | g_tapecatalog->entries = 0;
|
---|
| 778 | g_tape_posK = 0;
|
---|
| 779 | if (g_tape_stream) {
|
---|
| 780 | log_it("FYI - I won't 'openin' the tape. It's already open.");
|
---|
| 781 | return (0);
|
---|
| 782 | }
|
---|
[1969] | 783 |
|
---|
| 784 | // mondoarchive should have configured everything to give the right non-rew device
|
---|
| 785 | if ((bkpinfo->use_obdr) && (bkpinfo->media_device != NULL)) {
|
---|
[1955] | 786 | res = skip_obdr();
|
---|
| 787 | if (res != 0) {
|
---|
| 788 | log_it("Not able to skip OBDR - Restore will have to be done manually");
|
---|
| 789 | }
|
---|
[1952] | 790 | } else {
|
---|
[1969] | 791 | if (bkpinfo->media_device == NULL) {
|
---|
[1954] | 792 | log_it("Not able to skip OBDR - Restore will have to be done manually");
|
---|
[2325] | 793 | return (1);
|
---|
[1954] | 794 | }
|
---|
| 795 | set_tape_block_size_with_mt(bkpinfo->internal_tape_block_size);
|
---|
[1948] | 796 | }
|
---|
| 797 |
|
---|
[128] | 798 | insist_on_this_tape_number(1);
|
---|
[2323] | 799 | mr_asprintf(outfname, "%s/tmp/all.tar.gz", bkpinfo->tmpdir);
|
---|
[128] | 800 | make_hole_for_file(outfname);
|
---|
[1] | 801 |
|
---|
[128] | 802 | log_it("Opening IN tape");
|
---|
[2325] | 803 | if (!(g_tape_stream = open_device_via_buffer(bkpinfo->media_device, 'r', bkpinfo->internal_tape_block_size))) {
|
---|
[128] | 804 | log_OS_error(g_tape_fifo);
|
---|
[541] | 805 | log_to_screen("Cannot openin stream device");
|
---|
[2264] | 806 | mr_free(outfname);
|
---|
[128] | 807 | return (1);
|
---|
| 808 | }
|
---|
[541] | 809 | log_to_screen("Reading stream");
|
---|
[128] | 810 | log_it("stream device = '%s'", bkpinfo->media_device);
|
---|
[1] | 811 | /* skip data disks */
|
---|
[128] | 812 | open_evalcall_form("Skipping data disks on stream");
|
---|
[541] | 813 | log_to_screen("Skipping data disks on stream");
|
---|
[128] | 814 | if (!(fout = fopen(outfname, "w"))) {
|
---|
| 815 | log_OS_error(outfname);
|
---|
[541] | 816 | log_to_screen("Cannot openout datadisk all.tar.gz file");
|
---|
[2264] | 817 | mr_free(outfname);
|
---|
[128] | 818 | return (-1);
|
---|
[1] | 819 | }
|
---|
[128] | 820 | if (!(datablock = (char *) malloc(256 * 1024))) {
|
---|
[541] | 821 | log_to_screen("Unable to malloc 256*1024");
|
---|
[2264] | 822 | mr_free(outfname);
|
---|
[2240] | 823 | finish(1);
|
---|
[128] | 824 | }
|
---|
| 825 | for (i = 0; i < 32; i++) {
|
---|
| 826 | for (j = 0; j < 4; j++) {
|
---|
| 827 | for (length = 0, k = 0; length < 256 * 1024; length += k) {
|
---|
| 828 | k = fread(datablock + length, 1, 256 * 1024 - length,
|
---|
| 829 | g_tape_stream);
|
---|
| 830 | }
|
---|
| 831 | (void) fwrite(datablock, 1, (size_t) length, fout);
|
---|
| 832 | g_tape_posK += length / 1024;
|
---|
| 833 | }
|
---|
| 834 | if (i > 8) // otherwise, 'buffer' distorts calculations
|
---|
| 835 | {
|
---|
| 836 | templong = ((i - 8) * 4 + j) * 100 / (128 - 8 * 4);
|
---|
| 837 | update_evalcall_form((int) (templong));
|
---|
| 838 | }
|
---|
| 839 | }
|
---|
| 840 | paranoid_fclose(fout);
|
---|
| 841 | paranoid_free(datablock);
|
---|
[2264] | 842 |
|
---|
[1] | 843 | /* find initial blocks */
|
---|
[128] | 844 | res = read_header_block_from_stream(&size, fname, &ctrl_chr);
|
---|
| 845 | retval += res;
|
---|
| 846 | if (ctrl_chr != BLK_START_OF_TAPE) {
|
---|
| 847 | wrong_marker(BLK_START_OF_TAPE, ctrl_chr);
|
---|
| 848 | }
|
---|
| 849 | res = read_header_block_from_stream(&size, fname, &ctrl_chr);
|
---|
| 850 | retval += res;
|
---|
| 851 | if (ctrl_chr != BLK_START_OF_BACKUP) {
|
---|
| 852 | wrong_marker(BLK_START_OF_BACKUP, ctrl_chr);
|
---|
| 853 | }
|
---|
| 854 | close_evalcall_form();
|
---|
| 855 | log_it("Saved all.tar.gz to '%s'", outfname);
|
---|
| 856 | (void) getcwd(old_cwd, MAX_STR_LEN);
|
---|
| 857 | chdir(bkpinfo->tmpdir);
|
---|
[2462] | 858 | mr_asprintf(tmp, "tar -zxf %s ."MINDI_CACHE"/mondorestore.cfg 2> /dev/null", outfname);
|
---|
[128] | 859 | paranoid_system(tmp);
|
---|
[2264] | 860 | mr_free(tmp);
|
---|
| 861 |
|
---|
[2462] | 862 | paranoid_system("cp -f ."MINDI_CACHE"/mondorestore.cfg . 2> /dev/null");
|
---|
[128] | 863 | chdir(old_cwd);
|
---|
| 864 | unlink(outfname);
|
---|
[2264] | 865 | mr_free(outfname);
|
---|
[128] | 866 | return (retval);
|
---|
[1] | 867 | }
|
---|
| 868 |
|
---|
| 869 |
|
---|
| 870 | /**
|
---|
| 871 | * Start writing to a CD stream.
|
---|
| 872 | * @param cddev The CD device to openout via cdrecord.
|
---|
| 873 | * @param speed The speed to write at.
|
---|
| 874 | * @return 0 for success, nonzero for failure.
|
---|
| 875 | * @note This should be called only from backup processes.
|
---|
| 876 | */
|
---|
[128] | 877 | int openout_cdstream(char *cddev, int speed)
|
---|
[1] | 878 | {
|
---|
[128] | 879 | /*@ buffers ***************************************************** */
|
---|
[2264] | 880 | char *command = NULL;
|
---|
[1] | 881 |
|
---|
[128] | 882 | /*@ end vars *************************************************** */
|
---|
[1] | 883 |
|
---|
[2325] | 884 | if (cddev == NULL) {
|
---|
| 885 | log_to_screen("Failed to openout NULL cddev");
|
---|
| 886 | return (1);
|
---|
| 887 | }
|
---|
[2264] | 888 | /* add 'dummy' if testing */
|
---|
[2323] | 889 | mr_asprintf(command, "cdrecord -eject dev=%s speed=%d fs=24m -waiti - >> %s 2>> %s", cddev, speed, MONDO_LOGFILE, MONDO_LOGFILE);
|
---|
[2264] | 890 | /* initialise the catalog */
|
---|
[128] | 891 | g_current_media_number = 1;
|
---|
| 892 | if (!(g_tapecatalog = malloc(sizeof(struct s_tapecatalog)))) {
|
---|
| 893 | fatal_error("Cannot alloc mem for tape catalog");
|
---|
| 894 | }
|
---|
| 895 | g_tapecatalog->entries = 0;
|
---|
[2264] | 896 | /* log stuff */
|
---|
[128] | 897 | log_it("Opening OUT cdstream with the command");
|
---|
| 898 | log_it(command);
|
---|
[2264] | 899 | /* log_it("Let's see what happens, shall we?"); */
|
---|
[128] | 900 | g_tape_stream = popen(command, "w");
|
---|
[2264] | 901 | mr_free(command);
|
---|
| 902 |
|
---|
[128] | 903 | if (g_tape_stream) {
|
---|
| 904 | return (0);
|
---|
| 905 | } else {
|
---|
[541] | 906 | log_to_screen("Failed to openout to cdstream (fifo)");
|
---|
[128] | 907 | return (1);
|
---|
| 908 | }
|
---|
[1] | 909 | }
|
---|
| 910 |
|
---|
[2264] | 911 |
|
---|
[1] | 912 | /**
|
---|
| 913 | * Start writing to a tape device for the backup.
|
---|
[1948] | 914 | * Handle OBDR if we were asked to do so
|
---|
[1] | 915 | * @param tapedev The tape device to open for writing.
|
---|
| 916 | * @return 0 for success, nonzero for failure.
|
---|
| 917 | * @note This should be called ONLY from backup processes. It will OVERWRITE ANY
|
---|
| 918 | * EXISTING DATA on the tape!
|
---|
| 919 | */
|
---|
[1954] | 920 | int openout_tape() {
|
---|
[1] | 921 |
|
---|
[1954] | 922 | g_current_media_number = 1;
|
---|
| 923 | if (g_tape_stream) {
|
---|
| 924 | log_it("FYI - I won't 'openout' the tape. It's already open.");
|
---|
[128] | 925 | return (0);
|
---|
[1] | 926 | }
|
---|
[2325] | 927 | if (bkpinfo->media_device == NULL) {
|
---|
| 928 | log_it("Unable to openout NULL dvice");
|
---|
| 929 | return(1);
|
---|
[1954] | 930 | }
|
---|
[2325] | 931 | g_tapecatalog = mr_malloc(sizeof(struct s_tapecatalog));
|
---|
[1954] | 932 | g_tapecatalog->entries = 0;
|
---|
| 933 | g_tape_posK = 0;
|
---|
[1] | 934 |
|
---|
[1956] | 935 | if (bkpinfo->use_obdr) {
|
---|
[1954] | 936 | create_obdr();
|
---|
| 937 | } else {
|
---|
| 938 | set_tape_block_size_with_mt(bkpinfo->internal_tape_block_size);
|
---|
| 939 | }
|
---|
| 940 | log_it("Opening OUT tape");
|
---|
[2325] | 941 | if (!(g_tape_stream = open_device_via_buffer(bkpinfo->media_device, 'w', bkpinfo->internal_tape_block_size))) {
|
---|
[1954] | 942 | log_OS_error(g_tape_fifo);
|
---|
| 943 | log_to_screen("Cannot openin stream device");
|
---|
| 944 | return (1);
|
---|
| 945 | }
|
---|
| 946 | return (0);
|
---|
| 947 | }
|
---|
[1] | 948 |
|
---|
| 949 |
|
---|
| 950 |
|
---|
[1954] | 951 |
|
---|
[1] | 952 | /**
|
---|
| 953 | * Copy a file from the opened stream (CD or tape) to @p outfile.
|
---|
| 954 | * @param outfile The file to write to.
|
---|
| 955 | * @param size The size of the file in the input stream.
|
---|
| 956 | * @return 0 for success, nonzero for failure.
|
---|
| 957 | */
|
---|
| 958 | int
|
---|
[1645] | 959 | read_file_from_stream_to_file(char *outfile, long long size)
|
---|
[1] | 960 | {
|
---|
| 961 |
|
---|
[128] | 962 | /*@ int ******************************************************** */
|
---|
| 963 | int res;
|
---|
[1] | 964 |
|
---|
[128] | 965 | /*@ end vars *************************************************** */
|
---|
[1] | 966 |
|
---|
[1645] | 967 | res = read_file_from_stream_FULL(outfile, NULL, size);
|
---|
[1] | 968 |
|
---|
[128] | 969 | return (res);
|
---|
[1] | 970 | }
|
---|
| 971 |
|
---|
| 972 |
|
---|
| 973 |
|
---|
| 974 | /**
|
---|
| 975 | * Copy a file from the currently opened stream (CD or tape) to the stream indicated
|
---|
| 976 | * by @p fout.
|
---|
| 977 | * @param bkpinfo The backup information structure. @c bkpinfo->media_size is the only field used.
|
---|
| 978 | * @param fout The stream to write the file to.
|
---|
| 979 | * @param size The size of the file in bytes.
|
---|
| 980 | * @return 0 for success, nonzero for failure.
|
---|
| 981 | */
|
---|
| 982 | int
|
---|
[1645] | 983 | read_file_from_stream_to_stream(FILE * fout, long long size)
|
---|
[1] | 984 | {
|
---|
| 985 |
|
---|
[128] | 986 | /*@ int ******************************************************** */
|
---|
| 987 | int res;
|
---|
[1] | 988 |
|
---|
[128] | 989 | /*@ end vars *************************************************** */
|
---|
[1] | 990 |
|
---|
[1645] | 991 | res = read_file_from_stream_FULL(NULL, fout, size);
|
---|
[1] | 992 | /* fflush(g_tape_stream);
|
---|
| 993 | fflush(fout);*/
|
---|
[128] | 994 | return (res);
|
---|
[1] | 995 | }
|
---|
| 996 |
|
---|
| 997 |
|
---|
| 998 |
|
---|
| 999 | /**
|
---|
| 1000 | * Copy a file from the currently opened stream (CD or tape) to either a
|
---|
| 1001 | * @c FILE pointer indicating a currently-opened file, or a filename indicating
|
---|
| 1002 | * a new file to create. This is the backbone function that read_file_from_stream_to_file()
|
---|
| 1003 | * and read_file_from_stream_to_stream() are wrappers for.
|
---|
| 1004 | * @param bkpinfo The backup information structure. @c bkpinfo->media_size is the only field used.
|
---|
| 1005 | * @param outfname If non-NULL, write to this file.
|
---|
| 1006 | * @param foutstream If non-NULL, write to this stream.
|
---|
| 1007 | * @param orig_size The original length of the file in bytes.
|
---|
| 1008 | * @return 0 for success, nonzero for failure.
|
---|
| 1009 | * @note Only @b one of @p outfname or @p foutstream may be non-NULL.
|
---|
| 1010 | */
|
---|
| 1011 | int
|
---|
[1645] | 1012 | read_file_from_stream_FULL(char *outfname, FILE * foutstream, long long orig_size)
|
---|
[1] | 1013 | {
|
---|
[128] | 1014 | /*@ buffers ***************************************************** */
|
---|
| 1015 | char *datablock;
|
---|
| 1016 | char *temp_fname;
|
---|
| 1017 | char *temp_cksum;
|
---|
[2264] | 1018 | char *actual_cksum = NULL;
|
---|
[1] | 1019 |
|
---|
[128] | 1020 | /*@ int ********************************************************* */
|
---|
| 1021 | int retval = 0;
|
---|
[1] | 1022 | #ifdef EXTRA_TAPE_CHECKSUMS
|
---|
[128] | 1023 | int i, ch;
|
---|
[1] | 1024 | #endif
|
---|
[128] | 1025 | int noof_blocks;
|
---|
| 1026 | int ctrl_chr;
|
---|
| 1027 | int res;
|
---|
| 1028 | /*@ pointers **************************************************** */
|
---|
| 1029 | FILE *fout;
|
---|
[1] | 1030 |
|
---|
[128] | 1031 | /*@ long ***************************************************** */
|
---|
[1899] | 1032 | long bytes_to_write = 0L /*,i */ ;
|
---|
[1] | 1033 | // long bytes_successfully_read_in_this_time = 0;
|
---|
| 1034 |
|
---|
[128] | 1035 | /*@ long long *************************************************** */
|
---|
| 1036 | long long temp_size, size;
|
---|
| 1037 | long bytes_read, bytes_to_read;
|
---|
| 1038 | long long total_read_from_tape_for_this_file = 0;
|
---|
| 1039 | long long where_I_was_before_tape_change = 0;
|
---|
| 1040 | /*@ unsigned int ************************************************ */
|
---|
| 1041 | /* unsigned int ch; */
|
---|
| 1042 | unsigned int crc16;
|
---|
| 1043 | unsigned int crctt;
|
---|
[1] | 1044 |
|
---|
[128] | 1045 | bool had_to_resync = FALSE;
|
---|
[1] | 1046 |
|
---|
[128] | 1047 | /*@ init ******************************************************* */
|
---|
| 1048 | malloc_string(temp_fname);
|
---|
| 1049 | malloc_string(temp_cksum);
|
---|
| 1050 | datablock = malloc(TAPE_BLOCK_SIZE);
|
---|
| 1051 | crc16 = 0;
|
---|
| 1052 | crctt = 0;
|
---|
| 1053 | size = orig_size;
|
---|
[1] | 1054 |
|
---|
[128] | 1055 | /*@ end vars *************************************************** */
|
---|
[1] | 1056 |
|
---|
[128] | 1057 | res = read_header_block_from_stream(&temp_size, temp_fname, &ctrl_chr);
|
---|
| 1058 | if (orig_size != temp_size && orig_size != -1) {
|
---|
[2324] | 1059 | log_to_screen("output file's size should be %ld K but is apparently %ld K", (long) size >> 10, (long) temp_size >> 10);
|
---|
[128] | 1060 | }
|
---|
| 1061 | if (ctrl_chr != BLK_START_FILE) {
|
---|
| 1062 | wrong_marker(BLK_START_FILE, ctrl_chr);
|
---|
| 1063 | return (1);
|
---|
| 1064 | }
|
---|
[1] | 1065 |
|
---|
[128] | 1066 | if (foutstream) {
|
---|
| 1067 | fout = foutstream;
|
---|
| 1068 | } else {
|
---|
| 1069 | fout = fopen(outfname, "w");
|
---|
[1] | 1070 | }
|
---|
[128] | 1071 | if (!fout) {
|
---|
| 1072 | log_OS_error(outfname);
|
---|
[541] | 1073 | log_to_screen("Cannot openout file");
|
---|
[128] | 1074 | return (1);
|
---|
| 1075 | }
|
---|
| 1076 | total_read_from_tape_for_this_file = 0;
|
---|
| 1077 | for (noof_blocks = 0; size > 0;
|
---|
| 1078 | noof_blocks++, size -=
|
---|
| 1079 | bytes_to_write, total_read_from_tape_for_this_file +=
|
---|
| 1080 | bytes_read) {
|
---|
| 1081 | bytes_to_write =
|
---|
| 1082 | (size < TAPE_BLOCK_SIZE) ? (long) size : TAPE_BLOCK_SIZE;
|
---|
| 1083 | bytes_to_read = TAPE_BLOCK_SIZE;
|
---|
| 1084 | bytes_read = fread(datablock, 1, bytes_to_read, g_tape_stream);
|
---|
| 1085 | while (bytes_read < bytes_to_read) { // next tape!
|
---|
| 1086 | // crctt=crc16=0;
|
---|
| 1087 | where_I_was_before_tape_change = size;
|
---|
| 1088 | log_msg(4, "where_I_was_... = %lld",
|
---|
| 1089 | where_I_was_before_tape_change);
|
---|
[1645] | 1090 | start_to_read_from_next_tape();
|
---|
[128] | 1091 | log_msg(4, "Started reading from next tape.");
|
---|
| 1092 | skip_incoming_files_until_we_find_this_one(temp_fname);
|
---|
| 1093 | log_msg(4, "Skipped irrelevant files OK.");
|
---|
| 1094 | for (size = orig_size; size > where_I_was_before_tape_change;
|
---|
| 1095 | size -= bytes_to_write) {
|
---|
| 1096 | bytes_read =
|
---|
| 1097 | fread(datablock, 1, bytes_to_read, g_tape_stream);
|
---|
| 1098 | }
|
---|
| 1099 | log_msg(4, "'size' is now %lld (should be %lld)", size,
|
---|
| 1100 | where_I_was_before_tape_change);
|
---|
| 1101 | log_to_screen("Successfully re-sync'd tape");
|
---|
| 1102 | had_to_resync = TRUE;
|
---|
| 1103 | bytes_read = fread(datablock, 1, bytes_to_read, g_tape_stream);
|
---|
| 1104 | }
|
---|
[1] | 1105 |
|
---|
[128] | 1106 | (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
|
---|
[1] | 1107 |
|
---|
| 1108 | #ifdef EXTRA_TAPE_CHECKSUMS
|
---|
[128] | 1109 | for (i = 0; i < (int) bytes_to_write; i++) {
|
---|
| 1110 | ch = datablock[i];
|
---|
| 1111 | crc16 = updcrcr(crc16, (unsigned) ch);
|
---|
| 1112 | crctt = updcrc(crctt, (unsigned) ch);
|
---|
| 1113 | }
|
---|
[1] | 1114 | #endif
|
---|
[128] | 1115 | }
|
---|
| 1116 | log_msg(6, "Total read from tape for this file = %lld",
|
---|
| 1117 | total_read_from_tape_for_this_file);
|
---|
| 1118 | log_msg(6, ".......................... Should be %lld", orig_size);
|
---|
| 1119 | g_tape_posK += total_read_from_tape_for_this_file / 1024;
|
---|
[2323] | 1120 | mr_asprintf(actual_cksum, "%04x%04x", crc16, crctt);
|
---|
[128] | 1121 | if (foutstream) { /*log_it("Finished writing to foutstream"); */
|
---|
| 1122 | } else {
|
---|
| 1123 | paranoid_fclose(fout);
|
---|
| 1124 | }
|
---|
| 1125 | res = read_header_block_from_stream(&temp_size, temp_cksum, &ctrl_chr);
|
---|
| 1126 | if (ctrl_chr != BLK_STOP_FILE) {
|
---|
| 1127 | wrong_marker(BLK_STOP_FILE, ctrl_chr);
|
---|
| 1128 | }
|
---|
| 1129 | if (strcmp(temp_cksum, actual_cksum)) {
|
---|
[2324] | 1130 | log_to_screen("actual cksum=%s; recorded cksum=%s", actual_cksum, temp_cksum);
|
---|
| 1131 | log_to_screen("%s (%ld K) is corrupt on tape", temp_fname, (long) orig_size >> 10);
|
---|
[128] | 1132 | retval++;
|
---|
| 1133 | }
|
---|
[2264] | 1134 | mr_free(actual_cksum);
|
---|
| 1135 |
|
---|
[128] | 1136 | paranoid_free(datablock);
|
---|
| 1137 | paranoid_free(temp_fname);
|
---|
| 1138 | paranoid_free(temp_cksum);
|
---|
| 1139 | return (retval);
|
---|
[1] | 1140 | }
|
---|
| 1141 |
|
---|
| 1142 |
|
---|
| 1143 |
|
---|
| 1144 | /**
|
---|
| 1145 | * Read a header block from the currently opened stream (CD or tape).
|
---|
| 1146 | * This block indicates the length of the following file (if it's file-related)
|
---|
| 1147 | * the filename (if it's file-related), and the block type.
|
---|
| 1148 | * @param plen Where to put the length of the file. Valid only for file-related header blocks.
|
---|
| 1149 | * @param filename Where to put the name of the file. Valid only for file-related header blocks.
|
---|
| 1150 | * @param pcontrol_char Where to put the type of block (e.g. start-file, end-file, start-tape, ...)
|
---|
| 1151 | * @return 0 for success, nonzero for failure.
|
---|
| 1152 | * @note If you read a marker (@p pcontrol_char) you're not expecting, you can call wrong_marker().
|
---|
| 1153 | */
|
---|
| 1154 | int
|
---|
[128] | 1155 | read_header_block_from_stream(long long *plen, char *filename,
|
---|
| 1156 | int *pcontrol_char)
|
---|
[1] | 1157 | {
|
---|
| 1158 |
|
---|
[128] | 1159 | /*@ buffers ***************************************************** */
|
---|
| 1160 | char *tempblock;
|
---|
[1] | 1161 |
|
---|
[128] | 1162 | /*@ int ********************************************************* */
|
---|
| 1163 | int i, retval;
|
---|
[1] | 1164 |
|
---|
[128] | 1165 | /*@ end vars *************************************************** */
|
---|
[1] | 1166 |
|
---|
[128] | 1167 | tempblock = (char *) malloc((size_t) TAPE_BLOCK_SIZE);
|
---|
[1] | 1168 |
|
---|
[128] | 1169 | for (i = 0; i < (int) TAPE_BLOCK_SIZE; i++) {
|
---|
| 1170 | tempblock[i] = 0;
|
---|
| 1171 | }
|
---|
| 1172 | while (!(*pcontrol_char = tempblock[7000])) {
|
---|
| 1173 | g_tape_posK +=
|
---|
| 1174 | fread(tempblock, 1, (size_t) TAPE_BLOCK_SIZE,
|
---|
| 1175 | g_tape_stream) / 1024;
|
---|
| 1176 | }
|
---|
| 1177 | memcpy((char *) plen, tempblock + 7001, sizeof(long long));
|
---|
[1934] | 1178 | if (strcmp(tempblock + 6000 + *pcontrol_char, STR_HEADER)) {
|
---|
[128] | 1179 | log_it("Bad header block at %ld K", (long) g_tape_posK);
|
---|
| 1180 | }
|
---|
| 1181 | strcpy(filename, tempblock + 1000);
|
---|
| 1182 | if (*pcontrol_char == BLK_ABORTED_BACKUP) {
|
---|
| 1183 | log_to_screen("I can't verify an aborted backup.");
|
---|
| 1184 | retval = 1;
|
---|
| 1185 | } else {
|
---|
| 1186 | retval = 0;
|
---|
| 1187 | }
|
---|
| 1188 | for (i = 1000; i < 1020; i++) {
|
---|
| 1189 | if (tempblock[i] < 32 || tempblock[i] > 126) {
|
---|
| 1190 | tempblock[i] = ' ';
|
---|
| 1191 | }
|
---|
| 1192 | }
|
---|
| 1193 | tempblock[i] = '\0';
|
---|
| 1194 | log_msg(6, "%s (fname=%s, size=%ld K)",
|
---|
| 1195 | marker_to_string(*pcontrol_char), tempblock + 1000,
|
---|
| 1196 | (long) (*plen) >> 10);
|
---|
| 1197 | paranoid_free(tempblock);
|
---|
| 1198 | return (retval);
|
---|
[1] | 1199 | }
|
---|
| 1200 |
|
---|
| 1201 |
|
---|
| 1202 |
|
---|
| 1203 | /**
|
---|
| 1204 | * Add specified file/slice to the internal catalog of all archives written.
|
---|
| 1205 | * This lets us restart on a new CD/tape/whatever if it runs out of room. We just
|
---|
| 1206 | * write the last [buffer size] MB from the catalog to the new tape, so we know
|
---|
| 1207 | * we have @e all archives on some CD/tape/whatever.
|
---|
| 1208 | * @param type The type of file we're cataloging (afioball, slice, something else)
|
---|
| 1209 | * @param number The fileset number or biggiefile number.
|
---|
| 1210 | * @param aux The slice number if it's a biggiefile, or any other additional info.
|
---|
| 1211 | * @param fn The original full pathname of the file we're recording.
|
---|
| 1212 | * @return The index of the record we just added.
|
---|
| 1213 | */
|
---|
[128] | 1214 | int register_in_tape_catalog(t_archtype type, int number, long aux,
|
---|
| 1215 | char *fn)
|
---|
[1] | 1216 | {
|
---|
[128] | 1217 | int last;
|
---|
[2176] | 1218 | char fname[MAX_TAPECAT_FNAME_LEN+1];
|
---|
[128] | 1219 | char *p;
|
---|
[1] | 1220 |
|
---|
[128] | 1221 | p = strrchr(fn, '/');
|
---|
| 1222 | if (p) {
|
---|
| 1223 | p++;
|
---|
| 1224 | } else {
|
---|
| 1225 | p = fn;
|
---|
| 1226 | }
|
---|
| 1227 | strncpy(fname, p, MAX_TAPECAT_FNAME_LEN);
|
---|
| 1228 | fname[MAX_TAPECAT_FNAME_LEN] = '\0';
|
---|
| 1229 | last = g_tapecatalog->entries;
|
---|
| 1230 | if (last >= MAX_TAPECATALOG_ENTRIES) {
|
---|
| 1231 | log_it
|
---|
| 1232 | ("Warning - can't log #%d in tape catalog - too many entries already",
|
---|
| 1233 | number);
|
---|
| 1234 | return (-1);
|
---|
| 1235 | }
|
---|
| 1236 | g_tapecatalog->el[last].type = type;
|
---|
| 1237 | g_tapecatalog->el[last].number = number;
|
---|
| 1238 | g_tapecatalog->el[last].aux = aux;
|
---|
| 1239 | g_tapecatalog->el[last].tape_posK = g_tape_posK;
|
---|
| 1240 | strcpy(g_tapecatalog->el[last].fname, fname);
|
---|
| 1241 | g_tapecatalog->entries++;
|
---|
| 1242 | return (last); // returns the index of the record we've jsut added
|
---|
[1] | 1243 | }
|
---|
| 1244 |
|
---|
| 1245 |
|
---|
| 1246 |
|
---|
| 1247 |
|
---|
| 1248 | /**
|
---|
| 1249 | * Decide whether we should start a new tape. This is TRUE if we've run out of tape
|
---|
| 1250 | * (got SIGPIPE) or look like we will.
|
---|
| 1251 | * @param mediasize The size of the tape in megabytes.
|
---|
| 1252 | * @param length_of_incoming_file The length of the file we're about to write, in bytes.
|
---|
| 1253 | * @bug This seems like it'll only work for media_size != autodetect, but Mondo only allows
|
---|
| 1254 | * autodetecting the size. Huh?
|
---|
| 1255 | */
|
---|
[684] | 1256 |
|
---|
| 1257 | /* BERLIOS: Should be reviewed for mediasize being a off_t ??? */
|
---|
[1] | 1258 | bool
|
---|
[128] | 1259 | should_we_write_to_next_tape(long mediasize,
|
---|
[684] | 1260 | off_t length_of_incoming_file)
|
---|
[1] | 1261 | {
|
---|
[128] | 1262 | /*@ bool's ***************************************************** */
|
---|
| 1263 | bool we_need_a_new_tape = FALSE;
|
---|
[1] | 1264 |
|
---|
[128] | 1265 | /*@ end vars *************************************************** */
|
---|
[1] | 1266 |
|
---|
[128] | 1267 | if (mediasize == 0) {
|
---|
| 1268 | return (FALSE);
|
---|
| 1269 | }
|
---|
| 1270 | if (mediasize > 0 && (g_tape_posK >> 10 >= mediasize)) {
|
---|
| 1271 | log_it("mediasize = %ld", mediasize);
|
---|
| 1272 | we_need_a_new_tape = TRUE;
|
---|
[541] | 1273 | log_to_screen("Should have started a new tape/CD already");
|
---|
[128] | 1274 | }
|
---|
| 1275 | if ((g_tape_posK + length_of_incoming_file / 1024) >> 10 >=
|
---|
| 1276 | mediasize - (SLICE_SIZE * 4 / 1024)) {
|
---|
| 1277 | log_it("g_tape_posK = %ld\nmediasize = %ld\n", g_tape_posK,
|
---|
| 1278 | mediasize);
|
---|
| 1279 | we_need_a_new_tape = TRUE;
|
---|
| 1280 | }
|
---|
| 1281 | return (we_need_a_new_tape);
|
---|
[1] | 1282 | }
|
---|
| 1283 |
|
---|
| 1284 |
|
---|
| 1285 | /**
|
---|
| 1286 | * Seek through the stream until we find a header block where the NAME field matches
|
---|
| 1287 | * @p the_file_I_was_reading. This is useful if you've just started reading from
|
---|
| 1288 | * a new tape and want to find the file you were reading when the tape ended.
|
---|
| 1289 | * @param the_file_I_was_reading File name to look for.
|
---|
| 1290 | * @return 0 for success, nonzero for failure.
|
---|
| 1291 | */
|
---|
[128] | 1292 | int skip_incoming_files_until_we_find_this_one(char
|
---|
| 1293 | *the_file_I_was_reading)
|
---|
[1] | 1294 | {
|
---|
[128] | 1295 | char *pA;
|
---|
| 1296 | char *pB;
|
---|
| 1297 | int res;
|
---|
| 1298 | int ctrl_chr;
|
---|
| 1299 | char *temp_fname;
|
---|
| 1300 | char *datablock;
|
---|
| 1301 | long long temp_size, size;
|
---|
| 1302 | long bytes_to_write;
|
---|
[1] | 1303 |
|
---|
[128] | 1304 | datablock = malloc(TAPE_BLOCK_SIZE);
|
---|
| 1305 | malloc_string(temp_fname);
|
---|
| 1306 | pB = strrchr(the_file_I_was_reading, '/');
|
---|
| 1307 | if (pB) {
|
---|
| 1308 | pB++;
|
---|
| 1309 | } else {
|
---|
| 1310 | pB = the_file_I_was_reading;
|
---|
[1] | 1311 | }
|
---|
[128] | 1312 | log_msg(1, "skip_incoming_..(%s)", pB);
|
---|
| 1313 | log_msg(2, "Looking for initial START_AN_AFIO_OR_SLICE");
|
---|
| 1314 | ctrl_chr = -1;
|
---|
| 1315 | while (ctrl_chr != BLK_START_AN_AFIO_OR_SLICE) {
|
---|
| 1316 | res =
|
---|
[2405] | 1317 | read_header_block_from_stream(&temp_size, temp_fname, &ctrl_chr);
|
---|
[128] | 1318 | if (ctrl_chr == BLK_START_AN_AFIO_OR_SLICE) {
|
---|
| 1319 | break;
|
---|
| 1320 | }
|
---|
| 1321 | log_msg(1, "%lld %s %c", temp_size, temp_fname, ctrl_chr);
|
---|
| 1322 | wrong_marker(BLK_START_AN_AFIO_OR_SLICE, ctrl_chr);
|
---|
| 1323 | log_msg(3, "Still trying to re-sync w/ tape");
|
---|
| 1324 | }
|
---|
| 1325 | while (ctrl_chr != BLK_START_FILE) {
|
---|
| 1326 | res =
|
---|
[2405] | 1327 | read_header_block_from_stream(&temp_size, temp_fname, &ctrl_chr);
|
---|
[128] | 1328 | if (ctrl_chr == BLK_START_FILE) {
|
---|
| 1329 | break;
|
---|
| 1330 | }
|
---|
| 1331 | log_msg(1, "%lld %s %c", temp_size, temp_fname, ctrl_chr);
|
---|
| 1332 | wrong_marker(BLK_START_FILE, ctrl_chr);
|
---|
| 1333 | log_msg(3, "Still trying to re-sync w/ tape");
|
---|
| 1334 | }
|
---|
| 1335 | pA = strrchr(temp_fname, '/');
|
---|
| 1336 | if (pA) {
|
---|
| 1337 | pA++;
|
---|
| 1338 | } else {
|
---|
| 1339 | pA = temp_fname;
|
---|
| 1340 | }
|
---|
| 1341 | pB = strrchr(the_file_I_was_reading, '/');
|
---|
| 1342 | if (pB) {
|
---|
| 1343 | pB++;
|
---|
| 1344 | } else {
|
---|
| 1345 | pB = the_file_I_was_reading;
|
---|
| 1346 | }
|
---|
| 1347 | while (strcmp(pA, pB)) {
|
---|
[2405] | 1348 | log_msg(6, "Skipping %s (it's not %s)", temp_fname, the_file_I_was_reading);
|
---|
[128] | 1349 | for (size = temp_size; size > 0; size -= bytes_to_write) {
|
---|
| 1350 | bytes_to_write =
|
---|
| 1351 | (size < TAPE_BLOCK_SIZE) ? (long) size : TAPE_BLOCK_SIZE;
|
---|
| 1352 | // FIXME - needs error-checking and -catching
|
---|
| 1353 | fread(datablock, 1, (size_t) TAPE_BLOCK_SIZE, g_tape_stream);
|
---|
| 1354 | }
|
---|
| 1355 | res =
|
---|
[2405] | 1356 | read_header_block_from_stream(&temp_size, temp_fname, &ctrl_chr);
|
---|
[128] | 1357 | if (ctrl_chr != BLK_STOP_FILE) {
|
---|
| 1358 | wrong_marker(BLK_STOP_FILE, ctrl_chr);
|
---|
| 1359 | }
|
---|
| 1360 | res =
|
---|
[2405] | 1361 | read_header_block_from_stream(&temp_size, temp_fname, &ctrl_chr);
|
---|
[128] | 1362 | if (ctrl_chr != BLK_STOP_AN_AFIO_OR_SLICE) {
|
---|
| 1363 | wrong_marker(BLK_STOP_AN_AFIO_OR_SLICE, ctrl_chr);
|
---|
| 1364 | }
|
---|
| 1365 | res =
|
---|
[2405] | 1366 | read_header_block_from_stream(&temp_size, temp_fname, &ctrl_chr);
|
---|
[128] | 1367 | if (ctrl_chr != BLK_START_AN_AFIO_OR_SLICE) {
|
---|
| 1368 | wrong_marker(BLK_START_AN_AFIO_OR_SLICE, ctrl_chr);
|
---|
| 1369 | }
|
---|
| 1370 | res =
|
---|
[2405] | 1371 | read_header_block_from_stream(&temp_size, temp_fname, &ctrl_chr);
|
---|
[128] | 1372 | if (ctrl_chr != BLK_START_FILE) {
|
---|
| 1373 | wrong_marker(BLK_START_FILE, ctrl_chr);
|
---|
| 1374 | }
|
---|
| 1375 | pA = strrchr(temp_fname, '/');
|
---|
| 1376 | if (pA) {
|
---|
| 1377 | pA++;
|
---|
| 1378 | } else {
|
---|
| 1379 | pA = temp_fname;
|
---|
| 1380 | }
|
---|
| 1381 | pB = strrchr(the_file_I_was_reading, '/');
|
---|
| 1382 | if (pB) {
|
---|
| 1383 | pB++;
|
---|
| 1384 | } else {
|
---|
| 1385 | pB = the_file_I_was_reading;
|
---|
| 1386 | }
|
---|
| 1387 | }
|
---|
[2405] | 1388 | log_msg(2, "Reading %s (it matches %s)", temp_fname, the_file_I_was_reading);
|
---|
[128] | 1389 | paranoid_free(temp_fname);
|
---|
| 1390 | paranoid_free(datablock);
|
---|
| 1391 | return (0);
|
---|
[1] | 1392 | }
|
---|
| 1393 |
|
---|
| 1394 |
|
---|
| 1395 | /**
|
---|
| 1396 | * Start to read from the next tape. Assumes the user has already inserted it.
|
---|
| 1397 | * @param bkpinfo The backup information structure. @c bkpinfo->media_device is the only field used.
|
---|
| 1398 | * @return 0 for success, nonzero for failure.
|
---|
| 1399 | */
|
---|
[1645] | 1400 | int start_to_read_from_next_tape()
|
---|
[1] | 1401 | {
|
---|
[128] | 1402 | /*@ int ********************************************************* */
|
---|
| 1403 | int res = 0;
|
---|
| 1404 | char *sz_msg;
|
---|
| 1405 | int ctrlchr;
|
---|
| 1406 | long long temp_size;
|
---|
| 1407 | malloc_string(sz_msg);
|
---|
| 1408 | /*@ end vars *************************************************** */
|
---|
[1] | 1409 |
|
---|
[2325] | 1410 | if (bkpinfo->media_device == NULL) {
|
---|
| 1411 | log_it("Unable to open in from NULL device");
|
---|
| 1412 | return (1);
|
---|
| 1413 | }
|
---|
| 1414 |
|
---|
[128] | 1415 | paranoid_pclose(g_tape_stream);
|
---|
[1934] | 1416 | sync();
|
---|
| 1417 | sync();
|
---|
| 1418 | sync();
|
---|
[128] | 1419 | log_it("Next tape requested.");
|
---|
| 1420 | insist_on_this_tape_number(g_current_media_number + 1); // will increment it, too
|
---|
| 1421 | log_it("Opening IN the next tape");
|
---|
[2325] | 1422 | if (!(g_tape_stream = open_device_via_buffer(bkpinfo->media_device, 'r', bkpinfo->internal_tape_block_size))) {
|
---|
[128] | 1423 | log_OS_error(g_tape_fifo);
|
---|
[541] | 1424 | log_to_screen("Cannot openin stream device");
|
---|
[128] | 1425 | return (1);
|
---|
| 1426 | }
|
---|
| 1427 | g_tape_posK = 0;
|
---|
| 1428 | g_sigpipe = FALSE;
|
---|
| 1429 | res += read_header_block_from_stream(&temp_size, sz_msg, &ctrlchr); /* just in case */
|
---|
| 1430 | if (ctrlchr != BLK_START_OF_TAPE) {
|
---|
| 1431 | wrong_marker(BLK_START_OF_TAPE, ctrlchr);
|
---|
| 1432 | }
|
---|
| 1433 | res += read_header_block_from_stream(&temp_size, sz_msg, &ctrlchr); /* just in case */
|
---|
| 1434 | if (ctrlchr != BLK_START_OF_BACKUP) {
|
---|
| 1435 | wrong_marker(BLK_START_OF_BACKUP, ctrlchr);
|
---|
| 1436 | } else {
|
---|
| 1437 | log_msg(3, "Next tape opened OK. Whoopee!");
|
---|
| 1438 | }
|
---|
| 1439 | paranoid_free(sz_msg);
|
---|
| 1440 | return (res);
|
---|
[1] | 1441 | }
|
---|
| 1442 |
|
---|
| 1443 |
|
---|
| 1444 |
|
---|
| 1445 | /**
|
---|
| 1446 | * Start to write to the next tape. Assume the user has already inserted it.
|
---|
| 1447 | * @param bkpinfo The backup information structure. @c bkpinfo->media_device is the only field used.
|
---|
| 1448 | * @return 0 for success, nonzero for failure.
|
---|
| 1449 | */
|
---|
[1645] | 1450 | int start_to_write_to_next_tape()
|
---|
[1] | 1451 | {
|
---|
[128] | 1452 | int res = 0;
|
---|
[2264] | 1453 | char *command = NULL;
|
---|
| 1454 |
|
---|
[2325] | 1455 | if (bkpinfo->media_device == NULL) {
|
---|
| 1456 | log_it("Unable to open out from NULL device");
|
---|
| 1457 | return (1);
|
---|
| 1458 | }
|
---|
| 1459 |
|
---|
[128] | 1460 | paranoid_pclose(g_tape_stream);
|
---|
[2376] | 1461 | sync();
|
---|
| 1462 | sync();
|
---|
| 1463 | sync();
|
---|
[128] | 1464 | log_it("New tape requested.");
|
---|
| 1465 | insist_on_this_tape_number(g_current_media_number + 1); // will increment g_current_media, too
|
---|
| 1466 | if (g_current_media_number > MAX_NOOF_MEDIA) {
|
---|
| 1467 | res++;
|
---|
[541] | 1468 | log_to_screen("Too many tapes. Man, you need to use nfs!");
|
---|
[1] | 1469 | }
|
---|
[128] | 1470 | if (bkpinfo->backup_media_type == cdstream) {
|
---|
[2323] | 1471 | 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);
|
---|
[128] | 1472 | log_it("Opening OUT to next CD with the command");
|
---|
| 1473 | log_it(command);
|
---|
| 1474 | log_it("Let's see what happens, shall we?");
|
---|
| 1475 | g_tape_stream = popen(command, "w");
|
---|
[2264] | 1476 | mr_free(command);
|
---|
| 1477 |
|
---|
[128] | 1478 | if (!g_tape_stream) {
|
---|
[541] | 1479 | log_to_screen("Failed to openout to cdstream (fifo)");
|
---|
[128] | 1480 | return (1);
|
---|
| 1481 | }
|
---|
| 1482 | } else {
|
---|
| 1483 | log_it("Opening OUT to next tape");
|
---|
[2325] | 1484 | if (!(g_tape_stream = open_device_via_buffer(bkpinfo->media_device, 'w', bkpinfo->internal_tape_block_size))) {
|
---|
[128] | 1485 | log_OS_error(g_tape_fifo);
|
---|
[541] | 1486 | log_to_screen("Cannot openin stream device");
|
---|
[128] | 1487 | return (1);
|
---|
| 1488 | }
|
---|
[1] | 1489 | }
|
---|
[128] | 1490 | g_tape_posK = 0;
|
---|
| 1491 | g_sigpipe = FALSE;
|
---|
[684] | 1492 | res += write_header_block_to_stream((off_t)0, "start-of-tape", BLK_START_OF_TAPE); /* just in case */
|
---|
| 1493 | res += write_header_block_to_stream((off_t)0, "start-of-backup", BLK_START_OF_BACKUP); /* just in case */
|
---|
[128] | 1494 | return (res);
|
---|
[1] | 1495 | }
|
---|
| 1496 |
|
---|
| 1497 |
|
---|
| 1498 |
|
---|
| 1499 |
|
---|
| 1500 | /**
|
---|
| 1501 | * Write a bufferfull of the most recent archives to the tape. The
|
---|
| 1502 | * rationale behind this is a bit complex. If the previous tape ended
|
---|
| 1503 | * suddenly (EOF or otherwise) some archives were probably left in the
|
---|
| 1504 | * buffer. That means that Mondo thinks they have been written, but
|
---|
| 1505 | * the external binary @c buffer has not actually written them. So to
|
---|
| 1506 | * be safe, we start the new tape by writing the last bufferfull from
|
---|
| 1507 | * the old one. This insures that all archives will be on at least
|
---|
| 1508 | * one tape. Sounds inelegant, but it works.
|
---|
| 1509 | * @param bkpinfo The backup information structure. @c bkpinfo->tmpdir is the only field used.
|
---|
| 1510 | * @return 0 for success, nonzero for failure.
|
---|
| 1511 | */
|
---|
[1645] | 1512 | int write_backcatalog_to_tape()
|
---|
[1] | 1513 | {
|
---|
[128] | 1514 | int i, last, res = 0;
|
---|
[2264] | 1515 | char *fname = NULL;
|
---|
[1] | 1516 |
|
---|
[128] | 1517 | log_msg(2, "I am now writing back catalog to tape");
|
---|
| 1518 | last = g_tapecatalog->entries - 1;
|
---|
| 1519 | for (i = 0; i <= last; i++) {
|
---|
[2323] | 1520 | mr_asprintf(fname, "%s/tmpfs/backcatalog/%s", bkpinfo->tmpdir, g_tapecatalog->el[i].fname);
|
---|
[128] | 1521 | if (!does_file_exist(fname)) {
|
---|
| 1522 | log_msg(6, "Can't write %s - it doesn't exist.", fname);
|
---|
| 1523 | } else {
|
---|
| 1524 | write_header_block_to_stream(length_of_file(fname),
|
---|
| 1525 | "start-backcatalog-afio-or-slice",
|
---|
| 1526 | BLK_START_AN_AFIO_OR_SLICE);
|
---|
| 1527 | log_msg(2, "Writing %s", fname);
|
---|
[1645] | 1528 | if (write_file_to_stream_from_file(fname)) {
|
---|
[128] | 1529 | res++;
|
---|
| 1530 | log_msg(2, "%s failed", fname);
|
---|
| 1531 | }
|
---|
| 1532 | if (i != last) {
|
---|
[684] | 1533 | write_header_block_to_stream((off_t)0,
|
---|
[128] | 1534 | "stop-backcatalog-afio-or-slice",
|
---|
| 1535 | BLK_STOP_AN_AFIO_OR_SLICE);
|
---|
| 1536 | }
|
---|
| 1537 | }
|
---|
[2264] | 1538 | mr_free(fname);
|
---|
[128] | 1539 | }
|
---|
| 1540 | log_msg(2, "Finished writing back catalog to tape");
|
---|
| 1541 | return (res);
|
---|
[1] | 1542 | }
|
---|
| 1543 |
|
---|
| 1544 |
|
---|
| 1545 |
|
---|
| 1546 | /**
|
---|
| 1547 | * Write all.tar.gz (produced by Mindi) to the first 32M of the first tape.
|
---|
| 1548 | * @param fname The path to all.tar.gz.
|
---|
| 1549 | * @return 0 for success, nonzero for failure.
|
---|
| 1550 | */
|
---|
[128] | 1551 | int write_data_disks_to_stream(char *fname)
|
---|
[1] | 1552 | {
|
---|
[128] | 1553 | /*@ pointers *************************************************** */
|
---|
| 1554 | FILE *fin;
|
---|
[1] | 1555 |
|
---|
[128] | 1556 | /*@ long ******************************************************* */
|
---|
| 1557 | long m = -1;
|
---|
| 1558 | long templong;
|
---|
[1] | 1559 |
|
---|
[128] | 1560 | /*@ int ******************************************************** */
|
---|
| 1561 | int i, j;
|
---|
[1] | 1562 |
|
---|
[128] | 1563 | /*@ buffers **************************************************** */
|
---|
| 1564 | char tempblock[256 * 1024];
|
---|
[1] | 1565 |
|
---|
[128] | 1566 | /*@ end vars *************************************************** */
|
---|
[1] | 1567 |
|
---|
[541] | 1568 | open_evalcall_form("Writing data disks to tape");
|
---|
| 1569 | log_to_screen("Writing data disks to tape");
|
---|
[128] | 1570 | log_it("Data disks = %s", fname);
|
---|
| 1571 | if (!does_file_exist(fname)) {
|
---|
[2324] | 1572 | log_to_screen("Cannot find %s", fname);
|
---|
[128] | 1573 | return (1);
|
---|
[1] | 1574 | }
|
---|
[128] | 1575 | if (!(fin = fopen(fname, "r"))) {
|
---|
| 1576 | log_OS_error(fname);
|
---|
| 1577 | fatal_error("Cannot openin the data disk");
|
---|
| 1578 | }
|
---|
| 1579 | for (i = 0; i < 32; i++) { /* 32MB */
|
---|
| 1580 | for (j = 0; j < 4; j++) { /* 256K x 4 = 1MB (1024K) */
|
---|
| 1581 | if (!feof(fin)) {
|
---|
| 1582 | m = (long) fread(tempblock, 1, 256 * 1024, fin);
|
---|
| 1583 | } else {
|
---|
| 1584 | m = 0;
|
---|
| 1585 | }
|
---|
| 1586 | for (; m < 256 * 1024; m++) {
|
---|
| 1587 | tempblock[m] = '\0';
|
---|
| 1588 | }
|
---|
| 1589 | g_tape_posK +=
|
---|
| 1590 | fwrite(tempblock, 1, 256 * 1024, g_tape_stream) / 1024;
|
---|
| 1591 | }
|
---|
| 1592 | if (i > g_tape_buffer_size_MB) // otherwise, 'buffer' distorts calculations
|
---|
| 1593 | {
|
---|
| 1594 | templong = ((i - 8) * 4 + j) * 100 / (128 - 8 * 4);
|
---|
| 1595 | update_evalcall_form((int) (templong));
|
---|
| 1596 | }
|
---|
| 1597 | }
|
---|
| 1598 | paranoid_fclose(fin);
|
---|
| 1599 | close_evalcall_form();
|
---|
| 1600 | return (0);
|
---|
[1] | 1601 | }
|
---|
| 1602 |
|
---|
| 1603 |
|
---|
| 1604 |
|
---|
| 1605 |
|
---|
| 1606 | /**
|
---|
| 1607 | * Copy @p infile to the opened stream (CD or tape).
|
---|
| 1608 | * @param bkpinfo The backup information structure. @c bkpinfo->media_size is the only field used.
|
---|
| 1609 | * @param infile The file to write to the stream.
|
---|
| 1610 | * @return 0 for success, nonzero for failure.
|
---|
| 1611 | */
|
---|
[1645] | 1612 | int write_file_to_stream_from_file(char *infile)
|
---|
[1] | 1613 | {
|
---|
[128] | 1614 | /*@ buffers **************************************************** */
|
---|
| 1615 | char datablock[TAPE_BLOCK_SIZE];
|
---|
[2264] | 1616 | char *checksum = NULL;
|
---|
[128] | 1617 | char *infile_basename;
|
---|
[1] | 1618 |
|
---|
[128] | 1619 | /*@ int ******************************************************** */
|
---|
| 1620 | int retval = 0;
|
---|
| 1621 | int noof_blocks;
|
---|
[1] | 1622 |
|
---|
[128] | 1623 | /* unsigned int ch; */
|
---|
| 1624 | unsigned int crc16;
|
---|
| 1625 | unsigned int crctt;
|
---|
[1] | 1626 |
|
---|
[128] | 1627 | /*@ pointers *************************************************** */
|
---|
| 1628 | FILE *fin;
|
---|
| 1629 | char *p;
|
---|
[1] | 1630 |
|
---|
[128] | 1631 | /*@ long ******************************************************* */
|
---|
| 1632 | long bytes_to_read = 0;
|
---|
| 1633 | long i;
|
---|
[1] | 1634 |
|
---|
[684] | 1635 | off_t filesize;
|
---|
[1] | 1636 |
|
---|
| 1637 | #ifdef EXTRA_TAPE_CHECKSUMS
|
---|
[128] | 1638 | int ch;
|
---|
[1] | 1639 | #endif
|
---|
| 1640 |
|
---|
[128] | 1641 | /*@ initialize ************************************************ */
|
---|
| 1642 | crc16 = 0;
|
---|
| 1643 | crctt = 0;
|
---|
[1] | 1644 |
|
---|
| 1645 |
|
---|
| 1646 |
|
---|
[128] | 1647 | /*@ end vars *************************************************** */
|
---|
[1] | 1648 |
|
---|
[128] | 1649 | infile_basename = strrchr(infile, '/');
|
---|
| 1650 | if (infile_basename) {
|
---|
| 1651 | infile_basename++;
|
---|
| 1652 | } else {
|
---|
| 1653 | infile_basename = infile;
|
---|
| 1654 | }
|
---|
| 1655 | filesize = length_of_file(infile);
|
---|
| 1656 | if (should_we_write_to_next_tape
|
---|
| 1657 | (bkpinfo->media_size[g_current_media_number], filesize)) {
|
---|
[1645] | 1658 | start_to_write_to_next_tape();
|
---|
| 1659 | write_backcatalog_to_tape();
|
---|
[128] | 1660 | }
|
---|
| 1661 | p = strrchr(infile, '/');
|
---|
| 1662 | if (!p) {
|
---|
| 1663 | p = infile;
|
---|
| 1664 | } else {
|
---|
| 1665 | p++;
|
---|
| 1666 | }
|
---|
[2324] | 1667 | log_it("Writing file '%s' to tape (%ld KB)", p, (long) filesize >> 10);
|
---|
[128] | 1668 | write_header_block_to_stream(filesize, infile_basename,
|
---|
| 1669 | BLK_START_FILE);
|
---|
[1] | 1670 | //go_here_to_restart_saving_of_file:
|
---|
[128] | 1671 | if (!(fin = fopen(infile, "r"))) {
|
---|
| 1672 | log_OS_error(infile);
|
---|
| 1673 | return (1);
|
---|
[1] | 1674 | }
|
---|
[128] | 1675 | for (noof_blocks = 0; filesize > 0;
|
---|
| 1676 | noof_blocks++, filesize -= bytes_to_read) {
|
---|
| 1677 | if (filesize < TAPE_BLOCK_SIZE) {
|
---|
| 1678 | bytes_to_read = (long) filesize;
|
---|
| 1679 | for (i = 0; i < TAPE_BLOCK_SIZE; i++) {
|
---|
| 1680 | datablock[i] = '\0';
|
---|
| 1681 | }
|
---|
| 1682 | } else {
|
---|
| 1683 | bytes_to_read = TAPE_BLOCK_SIZE;
|
---|
| 1684 | }
|
---|
| 1685 | (void) fread(datablock, 1, (size_t) bytes_to_read, fin);
|
---|
| 1686 | g_tape_posK +=
|
---|
| 1687 | fwrite(datablock, 1, /*bytes_to_read */
|
---|
| 1688 | (size_t) TAPE_BLOCK_SIZE,
|
---|
| 1689 | g_tape_stream) / 1024;
|
---|
| 1690 | if (g_sigpipe) {
|
---|
[2230] | 1691 | log_it("Sigpipe occurred recently. I'll start a new tape.");
|
---|
[128] | 1692 | fclose(fin);
|
---|
| 1693 | g_sigpipe = FALSE;
|
---|
[1645] | 1694 | start_to_write_to_next_tape();
|
---|
| 1695 | write_backcatalog_to_tape(); // kinda-sorta recursive :)
|
---|
[128] | 1696 | return (0);
|
---|
| 1697 | }
|
---|
[1] | 1698 | #ifdef EXTRA_TAPE_CHECKSUMS
|
---|
[128] | 1699 | for (i = 0; i < bytes_to_read; i++) {
|
---|
| 1700 | ch = datablock[i];
|
---|
| 1701 | crc16 = updcrcr(crc16, (unsigned) ch);
|
---|
| 1702 | crctt = updcrc(crctt, (unsigned) ch);
|
---|
| 1703 | }
|
---|
[1] | 1704 | #endif
|
---|
[128] | 1705 | }
|
---|
| 1706 | paranoid_fclose(fin);
|
---|
[2323] | 1707 | mr_asprintf(checksum, "%04x%04x", crc16, crctt);
|
---|
[684] | 1708 | /* BERLIOS: what does it do ??? */
|
---|
[2264] | 1709 | write_header_block_to_stream((off_t)g_current_media_number, checksum, BLK_STOP_FILE);
|
---|
| 1710 | mr_free(checksum);
|
---|
| 1711 |
|
---|
[1] | 1712 | // log_it("File '%s' written to tape.", infile);
|
---|
[128] | 1713 | return (retval);
|
---|
[1] | 1714 | }
|
---|
| 1715 |
|
---|
| 1716 |
|
---|
| 1717 |
|
---|
| 1718 |
|
---|
| 1719 |
|
---|
| 1720 | /**
|
---|
| 1721 | * Write a header block to the opened stream (CD or tape).
|
---|
| 1722 | * @param length_of_incoming_file The length to store in the header block.
|
---|
| 1723 | * Usually matters only if this is a file-related header, in which case it should
|
---|
| 1724 | * be the length of the file that will follow.
|
---|
| 1725 | * @param filename The filename to store in the header block. Usually matters
|
---|
| 1726 | * only if this is a file-related header, in which case this should be the name
|
---|
| 1727 | * if the file that will follow.
|
---|
| 1728 | * @param control_char The type of header block this is (start-file, end-file, start-tape, ...)
|
---|
| 1729 | * @return 0 for success, nonzero for failure.
|
---|
| 1730 | */
|
---|
| 1731 | int
|
---|
[684] | 1732 | write_header_block_to_stream(off_t length_of_incoming_file,
|
---|
[128] | 1733 | char *filename, int control_char)
|
---|
[1] | 1734 | {
|
---|
[128] | 1735 | /*@ buffers **************************************************** */
|
---|
| 1736 | char tempblock[TAPE_BLOCK_SIZE];
|
---|
| 1737 | char *p;
|
---|
[1] | 1738 |
|
---|
[128] | 1739 | /*@ int ******************************************************** */
|
---|
| 1740 | int i;
|
---|
[1] | 1741 |
|
---|
[684] | 1742 | off_t olen;
|
---|
[1] | 1743 |
|
---|
[128] | 1744 | /*@ end vars *************************************************** */
|
---|
[1] | 1745 |
|
---|
| 1746 |
|
---|
[128] | 1747 | olen = length_of_incoming_file;
|
---|
| 1748 | p = strrchr(filename, '/'); /* Make 'em go, "Unnnh!" Oh wait, that was _Master_ P... */
|
---|
| 1749 | if (!p) {
|
---|
| 1750 | p = filename;
|
---|
| 1751 | } else {
|
---|
| 1752 | p++;
|
---|
| 1753 | }
|
---|
| 1754 | if (!g_tape_stream) {
|
---|
[2324] | 1755 | log_to_screen("You're not backing up to tape. Why write a tape header?");
|
---|
[128] | 1756 | return (1);
|
---|
| 1757 | }
|
---|
| 1758 | for (i = 0; i < (int) TAPE_BLOCK_SIZE; i++) {
|
---|
| 1759 | tempblock[i] = 0;
|
---|
| 1760 | }
|
---|
[1934] | 1761 | sprintf(tempblock + 6000 + control_char, STR_HEADER);
|
---|
[128] | 1762 | tempblock[7000] = control_char;
|
---|
[684] | 1763 | memcpy(tempblock + 7001, (char *) &olen, sizeof(off_t));
|
---|
[128] | 1764 | strcpy(tempblock + 1000, filename);
|
---|
[2324] | 1765 | g_tape_posK += fwrite(tempblock, 1, (size_t) TAPE_BLOCK_SIZE, g_tape_stream) / 1024;
|
---|
| 1766 | log_msg(6, "%s (fname=%s, size=%ld K)", marker_to_string(control_char), p, (long) length_of_incoming_file >> 10);
|
---|
[128] | 1767 | return (0);
|
---|
[1] | 1768 | }
|
---|
| 1769 |
|
---|
| 1770 |
|
---|
| 1771 |
|
---|
| 1772 |
|
---|
| 1773 |
|
---|
| 1774 |
|
---|
| 1775 |
|
---|
| 1776 |
|
---|
| 1777 |
|
---|
| 1778 |
|
---|
| 1779 | /**
|
---|
| 1780 | * Log (to screen) an erroneous marker, along with what it should have been.
|
---|
| 1781 | * @param should_be What we were expecting.
|
---|
| 1782 | * @param it_is What we got.
|
---|
| 1783 | */
|
---|
[128] | 1784 | void wrong_marker(int should_be, int it_is)
|
---|
[1] | 1785 | {
|
---|
[2324] | 1786 | log_to_screen("Wrong marker! (Should be %s, is actually %s)", marker_to_string(should_be), marker_to_string(it_is));
|
---|
[1] | 1787 | }
|
---|
| 1788 |
|
---|
| 1789 | /* @} - end of streamGroup */
|
---|