[1] | 1 | /* libmondo-stream.c
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[128] | 2 | $Id: libmondo-stream.c 3892 2024-03-12 02:10:24Z 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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[3613] | 16 | #include "mr_file.h"
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[1] | 17 | #include "mondostructures.h"
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[3870] | 18 |
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[1] | 19 | #include "libmondo-string-EXT.h"
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| 20 | #include "libmondo-files-EXT.h"
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[541] | 21 | #include "libmondo-gui-EXT.h"
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[1] | 22 | #include "libmondo-fork-EXT.h"
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| 23 | #include "libmondo-tools-EXT.h"
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| 24 | #include "libmondo-fifo-EXT.h"
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[3878] | 25 | #include "libmondo-devices-EXT.h"
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[1] | 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 3892 2024-03-12 02:10:24Z 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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[3878] | 43 | * FIFO used to read/write to the tape device.
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| 44 | * @bug This seems obsolete now that we call an external @c buffer program. Please look onto this.
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| 45 | */
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| 46 | char g_tape_fifo[MAX_STR_LEN];
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| 47 |
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| 48 |
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| 49 | /**
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[1] | 50 | * @addtogroup globalGroup
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| 51 | * @{
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| 52 | */
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| 53 | /**
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| 54 | * The file pointer for the opened tape/CD stream.
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[3882] | 55 | * Opened and closed by openin_tape(),
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| 56 | * openout_tape(), closein_tape(),
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| 57 | * closeout_tape().
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[1] | 58 | */
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| 59 | FILE *g_tape_stream = NULL;
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| 60 |
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| 61 |
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| 62 | /**
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| 63 | * The position (in kilobytes) where we are on the tape.
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| 64 | */
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| 65 | long long g_tape_posK = 0;
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| 66 |
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| 67 | /**
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| 68 | * The current media number we're using. This value is 1-based.
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| 69 | */
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[128] | 70 | int g_current_media_number = -1;
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[1] | 71 |
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| 72 | /**
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| 73 | * The tape catalog that keeps track of files written to tape.
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| 74 | */
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| 75 | struct s_tapecatalog *g_tapecatalog;
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| 76 |
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| 77 | /* @} - end of globalGroup */
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| 78 |
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[1645] | 79 | int write_backcatalog_to_tape();
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[1] | 80 |
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| 81 |
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| 82 |
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| 83 |
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[3879] | 84 | /**
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| 85 | * Log (to screen) an erroneous marker, along with what it should have been.
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| 86 | * @param should_be What we were expecting.
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| 87 | * @param it_is What we got.
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| 88 | */
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| 89 | void wrong_marker(int should_be, int it_is)
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| 90 | {
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| 91 | char *tmp1 = NULL;
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| 92 | char *tmp2 = NULL;
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| 93 | tmp1 = marker_to_string(should_be);
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| 94 | tmp2 = marker_to_string(it_is);
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| 95 | log_to_screen("Wrong marker! (Should be %s, is actually %s)", tmp1, tmp2);
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| 96 | mr_free(tmp1);
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| 97 | mr_free(tmp2);
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| 98 | }
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[1] | 99 |
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[3879] | 100 |
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| 101 |
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| 102 |
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[1] | 103 | /**
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[3879] | 104 | * Read a header block from the currently opened stream (CD or tape).
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| 105 | * This block indicates the length of the following file (if it's file-related)
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| 106 | * the filename (if it's file-related), and the block type.
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| 107 | * @param plen Where to put the length of the file. Valid only for file-related header blocks.
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| 108 | * @param filename Where to put the name of the file. Valid only for file-related header blocks.
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| 109 | * @param pcontrol_char Where to put the type of block (e.g. start-file, end-file, start-tape, ...)
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| 110 | * @return 0 for success, nonzero for failure.
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| 111 | * @note If you read a marker (@p pcontrol_char) you're not expecting, you can call wrong_marker().
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| 112 | */
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| 113 | int
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| 114 | read_header_block_from_stream(long long *plen, char *filename,
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| 115 | int *pcontrol_char)
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| 116 | {
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| 117 |
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| 118 | /*@ buffers ***************************************************** */
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| 119 | char *tempblock;
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| 120 | char *tmp = NULL;
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| 121 |
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| 122 | /*@ int ********************************************************* */
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| 123 | int i, retval;
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| 124 |
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| 125 | /*@ end vars *************************************************** */
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| 126 |
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| 127 | tempblock = (char *) malloc((size_t) TAPE_BLOCK_SIZE);
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| 128 |
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| 129 | for (i = 0; i < (int) TAPE_BLOCK_SIZE; i++) {
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| 130 | tempblock[i] = 0;
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| 131 | }
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| 132 | while (!(*pcontrol_char = tempblock[7000])) {
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| 133 | g_tape_posK += fread(tempblock, 1, (size_t) TAPE_BLOCK_SIZE, g_tape_stream) / 1024;
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| 134 | }
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| 135 | memcpy((char *) plen, tempblock + 7001, sizeof(long long));
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| 136 | if (strcmp(tempblock + 6000 + *pcontrol_char, STR_HEADER)) {
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| 137 | log_it("Bad header block at %ld K", (long) g_tape_posK);
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| 138 | }
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| 139 | strcpy(filename, tempblock + 1000);
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| 140 | if (*pcontrol_char == BLK_ABORTED_BACKUP) {
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| 141 | log_to_screen("I can't verify an aborted backup.");
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| 142 | retval = 1;
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| 143 | } else {
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| 144 | retval = 0;
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| 145 | }
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| 146 | for (i = 1000; i < 1020; i++) {
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| 147 | if (tempblock[i] < 32 || tempblock[i] > 126) {
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| 148 | tempblock[i] = ' ';
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| 149 | }
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| 150 | }
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| 151 | tempblock[i] = '\0';
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| 152 | tmp = marker_to_string(*pcontrol_char);
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| 153 | log_msg(6, "%s (fname=%s, size=%ld K)", tmp, tempblock + 1000, (long) (*plen) >> 10);
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| 154 | mr_free(tmp);
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| 155 | paranoid_free(tempblock);
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| 156 | return (retval);
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| 157 | }
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| 158 |
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| 159 |
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| 160 |
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| 161 | /**
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[3878] | 162 | * Close the global output file descriptor which Mondo has used to read
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| 163 | * from buffer or dd, which read from the tape.
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| 164 | * @param bkpinfo The backup information structure. Unused.
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| 165 | * @return 0 for success, nonzero for failure.
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| 166 | * @note This should be called by restore processes only.
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| 167 | * @bug @p bkpinfo parameter is unused.
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[1] | 168 | */
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[3878] | 169 | int closein_tape()
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| 170 | {
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| 171 | /*@ int's ******************************************************* */
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| 172 | int retval = 0;
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| 173 | int res = 0;
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| 174 | int ctrl_chr = '\0';
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| 175 |
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| 176 | /*@ buffers ***************************************************** */
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| 177 | char fname[MAX_STR_LEN];
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| 178 |
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| 179 | /*@ long long's ************************************************* */
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| 180 | long long size;
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| 181 | char *blk;
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| 182 | int i;
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| 183 | int j;
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| 184 |
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| 185 | blk = (char *) malloc(256 * 1024);
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| 186 |
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| 187 | log_it("closein_tape() -- entering");
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| 188 | res = read_header_block_from_stream(&size, fname, &ctrl_chr);
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| 189 | retval += res;
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| 190 | if (ctrl_chr != BLK_END_OF_BACKUP) {
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| 191 | wrong_marker(BLK_END_OF_BACKUP, ctrl_chr);
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| 192 | }
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| 193 | res = read_header_block_from_stream(&size, fname, &ctrl_chr);
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| 194 | retval += res;
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| 195 | if (ctrl_chr != BLK_END_OF_TAPE) {
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| 196 | wrong_marker(BLK_END_OF_TAPE, ctrl_chr);
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| 197 | }
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| 198 | for (i = 0; i < 8 && !feof(g_tape_stream); i++) {
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| 199 | j = fread(blk, 1, 256 * 1024, g_tape_stream);
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| 200 | if (j) {
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| 201 | // FIXME
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| 202 | }
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| 203 | }
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| 204 | sleep(1);
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| 205 | sync();
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| 206 | sleep(1);
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| 207 | paranoid_pclose(g_tape_stream);
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| 208 | log_it("closein_tape() -- leaving");
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| 209 | if (!bkpinfo->please_dont_eject) {
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| 210 | eject_device(bkpinfo->media_device);
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| 211 | }
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| 212 | paranoid_free(blk);
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| 213 | paranoid_free(g_tapecatalog);
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| 214 | return (retval);
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| 215 | }
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| 216 |
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| 217 |
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| 218 |
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[1] | 219 | /**
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[3860] | 220 | * Write a header block to the opened stream (CD or tape).
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| 221 | * @param length_of_incoming_file The length to store in the header block.
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| 222 | * Usually matters only if this is a file-related header, in which case it should
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| 223 | * be the length of the file that will follow.
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| 224 | * @param filename The filename to store in the header block. Usually matters
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| 225 | * only if this is a file-related header, in which case this should be the name
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| 226 | * if the file that will follow.
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| 227 | * @param control_char The type of header block this is (start-file, end-file, start-tape, ...)
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| 228 | * @return 0 for success, nonzero for failure.
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| 229 | */
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| 230 | int write_header_block_to_stream(off_t length_of_incoming_file, const char *filename, int control_char)
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| 231 | {
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| 232 | /*@ buffers **************************************************** */
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| 233 | char tempblock[TAPE_BLOCK_SIZE];
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| 234 | char *p;
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| 235 | char *tmp = NULL;
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[1] | 236 |
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[3860] | 237 | /*@ int ******************************************************** */
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| 238 | int i;
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| 239 |
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| 240 | off_t olen;
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| 241 |
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| 242 | /*@ end vars *************************************************** */
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| 243 |
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| 244 | olen = length_of_incoming_file;
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| 245 | p = strrchr(filename, '/'); /* Make 'em go, "Unnnh!" Oh wait, that was _Master_ P... */
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| 246 | if (!p) {
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| 247 | p = filename;
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| 248 | } else {
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| 249 | p++;
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| 250 | }
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| 251 | if (!g_tape_stream) {
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| 252 | log_to_screen("You're not backing up to tape. Why write a tape header?");
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| 253 | return (1);
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| 254 | }
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| 255 | for (i = 0; i < (int) TAPE_BLOCK_SIZE; i++) {
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| 256 | tempblock[i] = 0;
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| 257 | }
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| 258 | sprintf(tempblock + 6000 + control_char, STR_HEADER);
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| 259 | tempblock[7000] = control_char;
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| 260 | if (length_of_incoming_file > 0) {
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| 261 | memcpy(tempblock + 7001, (char *) &olen, sizeof(off_t));
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| 262 | }
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| 263 | strcpy(tempblock + 1000, filename);
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| 264 | g_tape_posK += fwrite(tempblock, 1, (size_t) TAPE_BLOCK_SIZE, g_tape_stream) / 1024;
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| 265 | tmp = marker_to_string(control_char);
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| 266 | log_msg(6, "%s (fname=%s, size=%ld K)", tmp, p, (long) length_of_incoming_file >> 10);
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| 267 | mr_free(tmp);
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| 268 | return (0);
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| 269 | }
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| 270 |
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| 271 |
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[3878] | 272 |
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| 273 |
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[1] | 274 | /**
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[3878] | 275 | * Tell the user to insert tape @p tapeno and wait for it to settle (5 seconds).
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| 276 | * @param tapeno The tape number to insist on.
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| 277 | * @bug There is currently no way to actually verify that the user has actually
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| 278 | * inserted the right tape.
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| 279 | */
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| 280 | void insist_on_this_tape_number(int tapeno)
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| 281 | {
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| 282 | int i;
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| 283 | char *tmp = NULL;
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| 284 |
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| 285 | log_it("Insisting on tape #%d", tapeno);
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| 286 | if (g_current_media_number != tapeno) {
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| 287 | mr_asprintf(tmp, "When the tape drive goes quiet, please insert volume %d in this series.", tapeno);
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| 288 | popup_and_OK(tmp);
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| 289 | mr_free(tmp);
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| 290 | open_evalcall_form("Waiting while the tape drive settles");
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| 291 | } else {
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| 292 | open_evalcall_form("Waiting while the tape drive rewinds");
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| 293 | }
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| 294 |
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| 295 | for (i = 0; i <= 100; i += 2) {
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| 296 | usleep(100000);
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| 297 | update_evalcall_form(i);
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| 298 | }
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| 299 | close_evalcall_form();
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| 300 | log_it("I assume user has inserted it. They _say_ they have...");
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| 301 | g_current_media_number = tapeno;
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| 302 |
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| 303 | // log_it("g_current_media_number = %d", g_current_media_number);
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| 304 | log_it("OK, I've finished insisting. On with the revelry.");
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| 305 | }
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| 306 |
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| 307 |
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| 308 |
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| 309 |
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| 310 |
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| 311 | /**
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[3877] | 312 | * Start to write to the next tape. Assume the user has already inserted it.
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| 313 | * @param bkpinfo The backup information structure. @c bkpinfo->media_device is the only field used.
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| 314 | * @return 0 for success, nonzero for failure.
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| 315 | */
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| 316 | int start_to_write_to_next_tape()
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| 317 | {
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| 318 | int res = 0;
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| 319 |
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| 320 | if (bkpinfo->media_device == NULL) {
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| 321 | log_it("Unable to open out from NULL device");
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| 322 | return (1);
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| 323 | }
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| 324 |
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| 325 | paranoid_pclose(g_tape_stream);
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| 326 | sync();
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| 327 | sync();
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| 328 | sync();
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| 329 | log_it("New tape requested.");
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| 330 | insist_on_this_tape_number(g_current_media_number + 1); // will increment g_current_media, too
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[3882] | 331 | log_it("Opening OUT to next tape");
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| 332 | if (!(g_tape_stream = open_device_via_buffer(bkpinfo->media_device, 'w', bkpinfo->internal_tape_block_size))) {
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| 333 | log_OS_error(g_tape_fifo);
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| 334 | log_to_screen("Cannot openin stream device");
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| 335 | return (1);
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[3877] | 336 | }
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| 337 | g_tape_posK = 0;
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| 338 | g_sigpipe = FALSE;
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| 339 | res += write_header_block_to_stream((off_t)0, "start-of-tape", BLK_START_OF_TAPE); /* just in case */
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| 340 | res += write_header_block_to_stream((off_t)0, "start-of-backup", BLK_START_OF_BACKUP); /* just in case */
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| 341 | return (res);
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| 342 | }
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| 343 |
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| 344 |
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| 345 |
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| 346 | /**
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| 347 | * Decide whether we should start a new tape. This is TRUE if we've run out of tape
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| 348 | * (got SIGPIPE) or look like we will.
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| 349 | * @param mediasize The size of the tape in megabytes.
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| 350 | * @param length_of_incoming_file The length of the file we're about to write, in bytes.
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| 351 | * @bug This seems like it'll only work for media_size != autodetect, but Mondo only allows
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| 352 | * autodetecting the size. Huh?
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| 353 | */
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| 354 |
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| 355 | /* TODO: Should be reviewed for mediasize being a off_t ??? */
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| 356 | bool
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| 357 | should_we_write_to_next_tape(long mediasize,
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| 358 | off_t length_of_incoming_file)
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| 359 | {
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| 360 | /*@ bool's ***************************************************** */
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| 361 | bool we_need_a_new_tape = FALSE;
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| 362 |
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| 363 | /*@ end vars *************************************************** */
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| 364 |
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| 365 | if (mediasize == 0) {
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| 366 | return (FALSE);
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| 367 | }
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| 368 | if (mediasize > 0 && (g_tape_posK >> 10 >= mediasize)) {
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| 369 | log_it("mediasize = %ld", mediasize);
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| 370 | we_need_a_new_tape = TRUE;
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| 371 | log_to_screen("Should have started a new tape/CD already");
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| 372 | }
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| 373 | if ((g_tape_posK + length_of_incoming_file / 1024) >> 10 >=
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| 374 | mediasize - (SLICE_SIZE * 4 / 1024)) {
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| 375 | log_it("g_tape_posK = %ld\nmediasize = %ld\n", g_tape_posK,
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| 376 | mediasize);
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| 377 | we_need_a_new_tape = TRUE;
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| 378 | }
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| 379 | return (we_need_a_new_tape);
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| 380 | }
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| 381 |
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| 382 |
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| 383 |
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| 384 |
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| 385 |
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| 386 | /**
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[1] | 387 | * Close the global output file descriptor which Mondo has been using to write
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| 388 | * to the tape device (via buffer or dd).
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| 389 | * @param bkpinfo The backup information structure. @c bkpinfo->media_size is the only field used.
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| 390 | * @return 0 for success, nonzero for failure.
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| 391 | * @note This should be called by backup processes only.
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| 392 | */
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[1645] | 393 | int closeout_tape()
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[1] | 394 | {
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[128] | 395 | /*@ int's ******************************************************* */
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| 396 | int retval = 0;
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[1] | 397 | // int res = 0;
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| 398 | // int ctrl_chr = '\0';
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| 399 |
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[128] | 400 | /*@ buffers ***************************************************** */
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[1] | 401 | // char fname[MAX_STR_LEN];
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| 402 |
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[128] | 403 | /*@ long long's ************************************************* */
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[1] | 404 | // long long size;
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[128] | 405 | int i;
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| 406 | char *blk;
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[1] | 407 |
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[128] | 408 | blk = (char *) malloc(256 * 1024);
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[1] | 409 |
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[128] | 410 | sleep(1);
|
---|
[3191] | 411 | sync();
|
---|
[128] | 412 | sleep(1);
|
---|
| 413 | log_it("closeout_tape() -- entering");
|
---|
| 414 | retval +=
|
---|
[684] | 415 | write_header_block_to_stream((off_t)0, "end-of-backup",
|
---|
[128] | 416 | BLK_END_OF_BACKUP);
|
---|
[684] | 417 | retval += write_header_block_to_stream((off_t)0, "end-of-tape", BLK_END_OF_TAPE); /* just in case */
|
---|
[1] | 418 | /* write 1MB of crap */
|
---|
[128] | 419 | for (i = 0; i < 256 * 1024; i++) {
|
---|
| 420 | blk[i] = (int) (random() & 0xFF);
|
---|
| 421 | }
|
---|
| 422 | for (i = 0; i < 4 * 8; i++) {
|
---|
[3060] | 423 | if (fwrite(blk, 1, 256 * 1024, g_tape_stream)) {
|
---|
| 424 | //FIXME
|
---|
| 425 | }
|
---|
[128] | 426 | if (should_we_write_to_next_tape
|
---|
[3150] | 427 | (bkpinfo->media_size, (off_t)256 * 1024)) {
|
---|
[1645] | 428 | start_to_write_to_next_tape();
|
---|
[128] | 429 | }
|
---|
| 430 | }
|
---|
[1] | 431 | /* write 1MB of zeroes */
|
---|
| 432 | /*
|
---|
| 433 | for (i = 0; i < 256*1024; i++)
|
---|
| 434 | {
|
---|
| 435 | blk[i] = 0;
|
---|
| 436 | }
|
---|
| 437 | for (i = 0; i < 4; i++)
|
---|
| 438 | {
|
---|
| 439 | fwrite (blk, 1, 256*1024, g_tape_stream);
|
---|
[3150] | 440 | if (should_we_write_to_next_tape (bkpinfo->media_size, 256*1024))
|
---|
[1] | 441 | {
|
---|
[1645] | 442 | start_to_write_to_next_tape ();
|
---|
[1] | 443 | }
|
---|
| 444 | }
|
---|
| 445 | */
|
---|
[128] | 446 | sleep(2);
|
---|
| 447 | paranoid_pclose(g_tape_stream);
|
---|
| 448 | log_it("closeout_tape() -- leaving");
|
---|
| 449 | for (i = 0; i < g_tapecatalog->entries; i++) {
|
---|
| 450 | log_it("i=%d type=%s num=%d aux=%ld posK=%lld", i,
|
---|
| 451 | (g_tapecatalog->el[i].type ==
|
---|
| 452 | fileset) ? "fileset" : "bigslice",
|
---|
| 453 | g_tapecatalog->el[i].number, g_tapecatalog->el[i].aux,
|
---|
| 454 | g_tapecatalog->el[i].tape_posK);
|
---|
| 455 | }
|
---|
| 456 | paranoid_free(blk);
|
---|
| 457 | paranoid_free(g_tapecatalog);
|
---|
| 458 | return (retval);
|
---|
[1] | 459 | }
|
---|
| 460 |
|
---|
| 461 |
|
---|
| 462 |
|
---|
[128] | 463 | bool mt_says_tape_exists(char *dev)
|
---|
[1] | 464 | {
|
---|
[2520] | 465 | char *command = NULL;
|
---|
[128] | 466 | int res;
|
---|
[1] | 467 |
|
---|
[3185] | 468 | mr_asprintf(command, "mt -f %s status", dev);
|
---|
[128] | 469 | res = run_program_and_log_output(command, 1);
|
---|
[2520] | 470 | mr_free(command);
|
---|
| 471 |
|
---|
[128] | 472 | if (res) {
|
---|
| 473 | return (FALSE);
|
---|
| 474 | } else {
|
---|
| 475 | return (TRUE);
|
---|
| 476 | }
|
---|
[1] | 477 | }
|
---|
| 478 |
|
---|
| 479 |
|
---|
| 480 |
|
---|
| 481 | /**
|
---|
[3870] | 482 | * Determine the name of the tape device. Tries the SCSI tape for
|
---|
| 483 | * this platform, then "/dev/st0", then "/dev/ht0" and "/dev/osst0".
|
---|
| 484 | * @return the value of the tape device or NULL if not found. Allocated dynamically must be freed by caller.
|
---|
[1] | 485 | */
|
---|
[3870] | 486 | char *find_tape_device(void) {
|
---|
[3610] | 487 | char *tmp = NULL;
|
---|
[3870] | 488 | char *dev = NULL;
|
---|
[2520] | 489 | char *command = NULL;
|
---|
[1] | 490 |
|
---|
[128] | 491 | log_to_screen("I am looking for your tape streamer. Please wait.");
|
---|
[2520] | 492 |
|
---|
[3872] | 493 | if (bkpinfo->media_device != NULL) {
|
---|
| 494 | log_msg(3, "Been there, done that. Returning %s", bkpinfo->media_device);
|
---|
| 495 | return (bkpinfo->media_device);
|
---|
| 496 | }
|
---|
| 497 |
|
---|
[3870] | 498 | tmp = find_home_of_exe("lsscsi");
|
---|
| 499 | if (tmp != NULL) {
|
---|
| 500 | mr_asprintf(command, "%s | grep ' tape' | awk '{print $NF}' | head -1", tmp);
|
---|
| 501 | dev = call_program_and_get_last_line_of_output(command);
|
---|
| 502 | mr_free(command);
|
---|
[128] | 503 | }
|
---|
[3191] | 504 | mr_free(tmp);
|
---|
| 505 |
|
---|
[3872] | 506 | if ((dev != NULL) && does_file_exist(dev)) {
|
---|
[3870] | 507 | if (mt_says_tape_exists(dev)) {
|
---|
| 508 | log_it("find_tape_device found %s automatically", dev);
|
---|
| 509 | }
|
---|
| 510 | } else {
|
---|
| 511 | /* trying something else then */
|
---|
| 512 | mr_asprintf(dev, "%s", VANILLA_SCSI_TAPE);
|
---|
[128] | 513 | if (!mt_says_tape_exists(dev)) {
|
---|
[3870] | 514 | mr_asprintf(dev, "%s", ALT_TAPE);
|
---|
[128] | 515 | if (!mt_says_tape_exists(dev)) {
|
---|
[3857] | 516 | mr_asprintf(dev, "%s", "/dev/osst0");
|
---|
[128] | 517 | if (!mt_says_tape_exists(dev)) {
|
---|
[3870] | 518 | log_it("Unable to find a tape device on this system");
|
---|
[128] | 519 | }
|
---|
| 520 | }
|
---|
| 521 | }
|
---|
[3872] | 522 | if (dev != NULL) {
|
---|
| 523 | log_it("find_tape_device found %s manually", dev);
|
---|
| 524 | }
|
---|
[128] | 525 | }
|
---|
[1] | 526 |
|
---|
[3872] | 527 | if ((dev != NULL) && does_file_exist(dev)) {
|
---|
[3870] | 528 | log_it("find_tape_device returns %s", dev);
|
---|
[3191] | 529 | } else {
|
---|
[3872] | 530 | mr_free(dev);
|
---|
[3870] | 531 | log_it("find_tape_device found no tape on your system returning NULL");
|
---|
[3191] | 532 | }
|
---|
[3870] | 533 | return (dev);
|
---|
[1] | 534 | }
|
---|
| 535 |
|
---|
| 536 |
|
---|
[3879] | 537 | /**
|
---|
| 538 | * Seek through the stream until we find a header block where the NAME field matches
|
---|
| 539 | * @p the_file_I_was_reading. This is useful if you've just started reading from
|
---|
| 540 | * a new tape and want to find the file you were reading when the tape ended.
|
---|
| 541 | * @param the_file_I_was_reading File name to look for.
|
---|
| 542 | * @return 0 for success, nonzero for failure.
|
---|
| 543 | */
|
---|
| 544 | int skip_incoming_files_until_we_find_this_one(char
|
---|
| 545 | *the_file_I_was_reading)
|
---|
| 546 | {
|
---|
| 547 | char *pA;
|
---|
| 548 | char *pB;
|
---|
| 549 | int res;
|
---|
| 550 | int ctrl_chr;
|
---|
| 551 | char *temp_fname;
|
---|
| 552 | char *datablock;
|
---|
| 553 | long long temp_size, size;
|
---|
| 554 | long bytes_to_write;
|
---|
[3878] | 555 |
|
---|
[3879] | 556 | datablock = malloc(TAPE_BLOCK_SIZE);
|
---|
| 557 | malloc_string(temp_fname);
|
---|
| 558 | pB = strrchr(the_file_I_was_reading, '/');
|
---|
| 559 | if (pB) {
|
---|
| 560 | pB++;
|
---|
| 561 | } else {
|
---|
| 562 | pB = the_file_I_was_reading;
|
---|
| 563 | }
|
---|
| 564 | log_msg(1, "skip_incoming_..(%s)", pB);
|
---|
| 565 | log_msg(2, "Looking for initial START_AN_AFIO_OR_SLICE");
|
---|
| 566 | ctrl_chr = -1;
|
---|
| 567 | while (ctrl_chr != BLK_START_AN_AFIO_OR_SLICE) {
|
---|
| 568 | res = read_header_block_from_stream(&temp_size, temp_fname, &ctrl_chr);
|
---|
| 569 | if (res) {
|
---|
| 570 | // FIXME
|
---|
| 571 | }
|
---|
| 572 | if (ctrl_chr == BLK_START_AN_AFIO_OR_SLICE) {
|
---|
| 573 | break;
|
---|
| 574 | }
|
---|
| 575 | log_msg(1, "%lld %s %c", temp_size, temp_fname, ctrl_chr);
|
---|
| 576 | wrong_marker(BLK_START_AN_AFIO_OR_SLICE, ctrl_chr);
|
---|
| 577 | log_msg(3, "Still trying to re-sync w/ tape");
|
---|
| 578 | }
|
---|
| 579 | while (ctrl_chr != BLK_START_FILE) {
|
---|
| 580 | res = read_header_block_from_stream(&temp_size, temp_fname, &ctrl_chr);
|
---|
| 581 | if (res) {
|
---|
| 582 | //FIXME
|
---|
| 583 | }
|
---|
| 584 | if (ctrl_chr == BLK_START_FILE) {
|
---|
| 585 | break;
|
---|
| 586 | }
|
---|
| 587 | log_msg(1, "%lld %s %c", temp_size, temp_fname, ctrl_chr);
|
---|
| 588 | wrong_marker(BLK_START_FILE, ctrl_chr);
|
---|
| 589 | log_msg(3, "Still trying to re-sync w/ tape");
|
---|
| 590 | }
|
---|
| 591 | pA = strrchr(temp_fname, '/');
|
---|
| 592 | if (pA) {
|
---|
| 593 | pA++;
|
---|
| 594 | } else {
|
---|
| 595 | pA = temp_fname;
|
---|
| 596 | }
|
---|
| 597 | pB = strrchr(the_file_I_was_reading, '/');
|
---|
| 598 | if (pB) {
|
---|
| 599 | pB++;
|
---|
| 600 | } else {
|
---|
| 601 | pB = the_file_I_was_reading;
|
---|
| 602 | }
|
---|
| 603 | while (strcmp(pA, pB)) {
|
---|
| 604 | log_msg(6, "Skipping %s (it's not %s)", temp_fname, the_file_I_was_reading);
|
---|
| 605 | for (size = temp_size; size > 0; size -= bytes_to_write) {
|
---|
| 606 | bytes_to_write =
|
---|
| 607 | (size < TAPE_BLOCK_SIZE) ? (long) size : TAPE_BLOCK_SIZE;
|
---|
| 608 | if (fread(datablock, 1, (size_t) TAPE_BLOCK_SIZE, g_tape_stream)) {
|
---|
| 609 | // FIXME - needs error-checking and -catching
|
---|
| 610 | }
|
---|
| 611 | }
|
---|
| 612 | res = read_header_block_from_stream(&temp_size, temp_fname, &ctrl_chr);
|
---|
| 613 | if (ctrl_chr != BLK_STOP_FILE) {
|
---|
| 614 | wrong_marker(BLK_STOP_FILE, ctrl_chr);
|
---|
| 615 | }
|
---|
| 616 | res = read_header_block_from_stream(&temp_size, temp_fname, &ctrl_chr);
|
---|
| 617 | if (ctrl_chr != BLK_STOP_AN_AFIO_OR_SLICE) {
|
---|
| 618 | wrong_marker(BLK_STOP_AN_AFIO_OR_SLICE, ctrl_chr);
|
---|
| 619 | }
|
---|
| 620 | res = read_header_block_from_stream(&temp_size, temp_fname, &ctrl_chr);
|
---|
| 621 | if (ctrl_chr != BLK_START_AN_AFIO_OR_SLICE) {
|
---|
| 622 | wrong_marker(BLK_START_AN_AFIO_OR_SLICE, ctrl_chr);
|
---|
| 623 | }
|
---|
| 624 | res = read_header_block_from_stream(&temp_size, temp_fname, &ctrl_chr);
|
---|
| 625 | if (ctrl_chr != BLK_START_FILE) {
|
---|
| 626 | wrong_marker(BLK_START_FILE, ctrl_chr);
|
---|
| 627 | }
|
---|
| 628 | pA = strrchr(temp_fname, '/');
|
---|
| 629 | if (pA) {
|
---|
| 630 | pA++;
|
---|
| 631 | } else {
|
---|
| 632 | pA = temp_fname;
|
---|
| 633 | }
|
---|
| 634 | pB = strrchr(the_file_I_was_reading, '/');
|
---|
| 635 | if (pB) {
|
---|
| 636 | pB++;
|
---|
| 637 | } else {
|
---|
| 638 | pB = the_file_I_was_reading;
|
---|
| 639 | }
|
---|
| 640 | }
|
---|
| 641 | log_msg(2, "Reading %s (it matches %s)", temp_fname, the_file_I_was_reading);
|
---|
| 642 | paranoid_free(temp_fname);
|
---|
| 643 | paranoid_free(datablock);
|
---|
| 644 | return (0);
|
---|
| 645 | }
|
---|
| 646 |
|
---|
| 647 |
|
---|
[3877] | 648 | /**
|
---|
[3879] | 649 | * Start to read from the next tape. Assumes the user has already inserted it.
|
---|
| 650 | * @param bkpinfo The backup information structure. @c bkpinfo->media_device is the only field used.
|
---|
| 651 | * @return 0 for success, nonzero for failure.
|
---|
| 652 | */
|
---|
| 653 | int start_to_read_from_next_tape()
|
---|
| 654 | {
|
---|
| 655 | /*@ int ********************************************************* */
|
---|
| 656 | int res = 0;
|
---|
| 657 | char *sz_msg;
|
---|
| 658 | int ctrlchr;
|
---|
| 659 | long long temp_size;
|
---|
| 660 | malloc_string(sz_msg);
|
---|
| 661 | /*@ end vars *************************************************** */
|
---|
| 662 |
|
---|
| 663 | if (bkpinfo->media_device == NULL) {
|
---|
| 664 | log_it("Unable to open in from NULL device");
|
---|
| 665 | return (1);
|
---|
| 666 | }
|
---|
| 667 |
|
---|
| 668 | paranoid_pclose(g_tape_stream);
|
---|
| 669 | sync();
|
---|
| 670 | sync();
|
---|
| 671 | sync();
|
---|
| 672 | log_it("Next tape requested.");
|
---|
| 673 | insist_on_this_tape_number(g_current_media_number + 1); // will increment it, too
|
---|
| 674 | log_it("Opening IN the next tape");
|
---|
| 675 | if (!(g_tape_stream = open_device_via_buffer(bkpinfo->media_device, 'r', bkpinfo->internal_tape_block_size))) {
|
---|
| 676 | log_OS_error(g_tape_fifo);
|
---|
| 677 | log_to_screen("Cannot openin stream device");
|
---|
| 678 | return (1);
|
---|
| 679 | }
|
---|
| 680 | g_tape_posK = 0;
|
---|
| 681 | g_sigpipe = FALSE;
|
---|
| 682 | res += read_header_block_from_stream(&temp_size, sz_msg, &ctrlchr); /* just in case */
|
---|
| 683 | if (ctrlchr != BLK_START_OF_TAPE) {
|
---|
| 684 | wrong_marker(BLK_START_OF_TAPE, ctrlchr);
|
---|
| 685 | }
|
---|
| 686 | res += read_header_block_from_stream(&temp_size, sz_msg, &ctrlchr); /* just in case */
|
---|
| 687 | if (ctrlchr != BLK_START_OF_BACKUP) {
|
---|
| 688 | wrong_marker(BLK_START_OF_BACKUP, ctrlchr);
|
---|
| 689 | } else {
|
---|
| 690 | log_msg(3, "Next tape opened OK. Whoopee!");
|
---|
| 691 | }
|
---|
| 692 | paranoid_free(sz_msg);
|
---|
| 693 | return (res);
|
---|
| 694 | }
|
---|
| 695 |
|
---|
| 696 |
|
---|
| 697 |
|
---|
| 698 |
|
---|
| 699 | /**
|
---|
[3878] | 700 | * Copy a file from the currently opened stream (CD or tape) to either a
|
---|
| 701 | * @c FILE pointer indicating a currently-opened file, or a filename indicating
|
---|
| 702 | * a new file to create. This is the backbone function that read_file_from_stream_to_file()
|
---|
| 703 | * and read_file_from_stream_to_stream() are wrappers for.
|
---|
| 704 | * @param bkpinfo The backup information structure. @c bkpinfo->media_size is the only field used.
|
---|
| 705 | * @param outfname If non-NULL, write to this file.
|
---|
| 706 | * @param foutstream If non-NULL, write to this stream.
|
---|
| 707 | * @param orig_size The original length of the file in bytes.
|
---|
| 708 | * @return 0 for success, nonzero for failure.
|
---|
| 709 | * @note Only @b one of @p outfname or @p foutstream may be non-NULL.
|
---|
| 710 | */
|
---|
| 711 | int
|
---|
| 712 | read_file_from_stream_FULL(char *outfname, FILE * foutstream, long long orig_size)
|
---|
| 713 | {
|
---|
| 714 | /*@ buffers ***************************************************** */
|
---|
| 715 | char *datablock;
|
---|
| 716 | char *temp_fname;
|
---|
| 717 | char *temp_cksum;
|
---|
| 718 | char *actual_cksum = NULL;
|
---|
| 719 |
|
---|
| 720 | /*@ int ********************************************************* */
|
---|
| 721 | int retval = 0;
|
---|
| 722 | #ifdef EXTRA_TAPE_CHECKSUMS
|
---|
| 723 | int i, ch;
|
---|
| 724 | #endif
|
---|
| 725 | int noof_blocks;
|
---|
| 726 | int ctrl_chr;
|
---|
| 727 | int res;
|
---|
| 728 | /*@ pointers **************************************************** */
|
---|
| 729 | FILE *fout;
|
---|
| 730 |
|
---|
| 731 | /*@ long ***************************************************** */
|
---|
| 732 | long bytes_to_write = 0L /*,i */ ;
|
---|
| 733 | // long bytes_successfully_read_in_this_time = 0;
|
---|
| 734 |
|
---|
| 735 | /*@ long long *************************************************** */
|
---|
| 736 | long long temp_size, size;
|
---|
| 737 | long bytes_read, bytes_to_read;
|
---|
| 738 | long long total_read_from_tape_for_this_file = 0;
|
---|
| 739 | long long where_I_was_before_tape_change = 0;
|
---|
| 740 | /*@ unsigned int ************************************************ */
|
---|
| 741 | /* unsigned int ch; */
|
---|
| 742 | unsigned int crc16;
|
---|
| 743 | unsigned int crctt;
|
---|
| 744 |
|
---|
| 745 | /*@ init ******************************************************* */
|
---|
| 746 | malloc_string(temp_fname);
|
---|
| 747 | malloc_string(temp_cksum);
|
---|
| 748 | datablock = malloc(TAPE_BLOCK_SIZE);
|
---|
| 749 | crc16 = 0;
|
---|
| 750 | crctt = 0;
|
---|
| 751 | size = orig_size;
|
---|
| 752 |
|
---|
| 753 | /*@ end vars *************************************************** */
|
---|
| 754 |
|
---|
| 755 | res = read_header_block_from_stream(&temp_size, temp_fname, &ctrl_chr);
|
---|
| 756 | if (res) {
|
---|
| 757 | // FIXME
|
---|
| 758 | }
|
---|
| 759 | if (orig_size != temp_size && orig_size != -1) {
|
---|
| 760 | log_to_screen("output file's size should be %ld K but is apparently %ld K", (long) size >> 10, (long) temp_size >> 10);
|
---|
| 761 | }
|
---|
| 762 | if (ctrl_chr != BLK_START_FILE) {
|
---|
| 763 | wrong_marker(BLK_START_FILE, ctrl_chr);
|
---|
| 764 | return (1);
|
---|
| 765 | }
|
---|
| 766 |
|
---|
| 767 | if (foutstream) {
|
---|
| 768 | fout = foutstream;
|
---|
| 769 | } else {
|
---|
| 770 | fout = fopen(outfname, "w");
|
---|
| 771 | }
|
---|
| 772 | if (!fout) {
|
---|
| 773 | log_OS_error(outfname);
|
---|
| 774 | log_to_screen("Cannot openout file");
|
---|
| 775 | return (1);
|
---|
| 776 | }
|
---|
| 777 | total_read_from_tape_for_this_file = 0;
|
---|
| 778 | for (noof_blocks = 0; size > 0;
|
---|
| 779 | noof_blocks++, size -=
|
---|
| 780 | bytes_to_write, total_read_from_tape_for_this_file +=
|
---|
| 781 | bytes_read) {
|
---|
| 782 | bytes_to_write =
|
---|
| 783 | (size < TAPE_BLOCK_SIZE) ? (long) size : TAPE_BLOCK_SIZE;
|
---|
| 784 | bytes_to_read = TAPE_BLOCK_SIZE;
|
---|
| 785 | bytes_read = fread(datablock, 1, bytes_to_read, g_tape_stream);
|
---|
| 786 | while (bytes_read < bytes_to_read) { // next tape!
|
---|
| 787 | // crctt=crc16=0;
|
---|
| 788 | where_I_was_before_tape_change = size;
|
---|
| 789 | log_msg(4, "where_I_was_... = %lld",
|
---|
| 790 | where_I_was_before_tape_change);
|
---|
| 791 | start_to_read_from_next_tape();
|
---|
| 792 | log_msg(4, "Started reading from next tape.");
|
---|
| 793 | skip_incoming_files_until_we_find_this_one(temp_fname);
|
---|
| 794 | log_msg(4, "Skipped irrelevant files OK.");
|
---|
| 795 | for (size = orig_size; size > where_I_was_before_tape_change;
|
---|
| 796 | size -= bytes_to_write) {
|
---|
| 797 | bytes_read = fread(datablock, 1, bytes_to_read, g_tape_stream);
|
---|
| 798 | }
|
---|
| 799 | log_msg(4, "'size' is now %lld (should be %lld)", size,
|
---|
| 800 | where_I_was_before_tape_change);
|
---|
| 801 | log_to_screen("Successfully re-sync'd tape");
|
---|
| 802 | bytes_read = fread(datablock, 1, bytes_to_read, g_tape_stream);
|
---|
| 803 | }
|
---|
| 804 |
|
---|
| 805 | if (fwrite(datablock, 1, (size_t) bytes_to_write, fout)) { // for blocking reasons, bytes_successfully_read_in isn't necessarily the same as bytes_to_write
|
---|
| 806 | // FIXME
|
---|
| 807 | }
|
---|
| 808 |
|
---|
| 809 | #ifdef EXTRA_TAPE_CHECKSUMS
|
---|
| 810 | for (i = 0; i < (int) bytes_to_write; i++) {
|
---|
| 811 | ch = datablock[i];
|
---|
| 812 | crc16 = updcrcr(crc16, (unsigned) ch);
|
---|
| 813 | crctt = updcrc(crctt, (unsigned) ch);
|
---|
| 814 | }
|
---|
| 815 | #endif
|
---|
| 816 | }
|
---|
| 817 | log_msg(6, "Total read from tape for this file = %lld",
|
---|
| 818 | total_read_from_tape_for_this_file);
|
---|
| 819 | log_msg(6, ".......................... Should be %lld", orig_size);
|
---|
| 820 | g_tape_posK += total_read_from_tape_for_this_file / 1024;
|
---|
| 821 | mr_asprintf(actual_cksum, "%04x%04x", crc16, crctt);
|
---|
| 822 | if (foutstream) { /*log_it("Finished writing to foutstream"); */
|
---|
| 823 | } else {
|
---|
| 824 | paranoid_fclose(fout);
|
---|
| 825 | }
|
---|
| 826 | res = read_header_block_from_stream(&temp_size, temp_cksum, &ctrl_chr);
|
---|
| 827 | if (ctrl_chr != BLK_STOP_FILE) {
|
---|
| 828 | wrong_marker(BLK_STOP_FILE, ctrl_chr);
|
---|
| 829 | }
|
---|
| 830 | if (strcmp(temp_cksum, actual_cksum)) {
|
---|
| 831 | log_to_screen("actual cksum=%s; recorded cksum=%s", actual_cksum, temp_cksum);
|
---|
| 832 | log_to_screen("%s (%ld K) is corrupt on tape", temp_fname, (long) orig_size >> 10);
|
---|
| 833 | retval++;
|
---|
| 834 | }
|
---|
| 835 | mr_free(actual_cksum);
|
---|
| 836 |
|
---|
| 837 | paranoid_free(datablock);
|
---|
| 838 | paranoid_free(temp_fname);
|
---|
| 839 | paranoid_free(temp_cksum);
|
---|
| 840 | return (retval);
|
---|
| 841 | }
|
---|
| 842 |
|
---|
| 843 |
|
---|
| 844 | /**
|
---|
[3877] | 845 | * Copy a file from the opened stream (CD or tape) to @p outfile.
|
---|
| 846 | * @param outfile The file to write to.
|
---|
| 847 | * @param size The size of the file in the input stream.
|
---|
| 848 | * @return 0 for success, nonzero for failure.
|
---|
| 849 | */
|
---|
| 850 | int
|
---|
| 851 | read_file_from_stream_to_file(char *outfile, long long size)
|
---|
| 852 | {
|
---|
| 853 |
|
---|
| 854 | /*@ int ******************************************************** */
|
---|
| 855 | int res;
|
---|
| 856 |
|
---|
| 857 | /*@ end vars *************************************************** */
|
---|
| 858 |
|
---|
| 859 | res = read_file_from_stream_FULL(outfile, NULL, size);
|
---|
| 860 |
|
---|
| 861 | return (res);
|
---|
| 862 | }
|
---|
| 863 |
|
---|
| 864 |
|
---|
| 865 |
|
---|
| 866 |
|
---|
[1645] | 867 | int read_EXAT_files_from_tape(long long *ptmp_size, char *tmp_fname,
|
---|
[128] | 868 | int *pctrl_chr, char *xattr_fname,
|
---|
| 869 | char *acl_fname)
|
---|
[1] | 870 | {
|
---|
[128] | 871 | int res = 0;
|
---|
[3080] | 872 | char fname_buf[PATH_MAX];
|
---|
[3116] | 873 | char *fname = (char *)fname_buf; /* Should NOT be NULL */
|
---|
[1940] | 874 | char *tmp = NULL;
|
---|
[128] | 875 |
|
---|
[1933] | 876 | // xattr
|
---|
[948] | 877 | if (g_getfattr) {
|
---|
[955] | 878 | res = read_header_block_from_stream(ptmp_size, fname, pctrl_chr);
|
---|
[948] | 879 | if (*pctrl_chr != BLK_START_EXAT_FILE) {
|
---|
| 880 | wrong_marker(BLK_START_EXAT_FILE, *pctrl_chr);
|
---|
| 881 | }
|
---|
[1940] | 882 | if (strstr(fname, "xattr") == NULL) {
|
---|
[3185] | 883 | mr_asprintf(tmp,"Wrong order expected xattr, got %s, sunshine.", fname);
|
---|
[1940] | 884 | fatal_error(tmp);
|
---|
[948] | 885 | }
|
---|
[1645] | 886 | read_file_from_stream_to_file(xattr_fname, *ptmp_size);
|
---|
[1940] | 887 | res = read_header_block_from_stream(ptmp_size, fname, pctrl_chr);
|
---|
[948] | 888 | if (*pctrl_chr != BLK_STOP_EXAT_FILE) {
|
---|
| 889 | wrong_marker(BLK_STOP_EXAT_FILE, *pctrl_chr);
|
---|
| 890 | }
|
---|
| 891 | log_msg(1, "Got xattr");
|
---|
[1940] | 892 | res = read_header_block_from_stream(ptmp_size, fname, pctrl_chr);
|
---|
[1933] | 893 | if (*pctrl_chr != BLK_STOP_EXTENDED_ATTRIBUTES) {
|
---|
| 894 | wrong_marker(BLK_STOP_EXTENDED_ATTRIBUTES, *pctrl_chr);
|
---|
| 895 | }
|
---|
[1940] | 896 | res = read_header_block_from_stream(ptmp_size, fname, pctrl_chr);
|
---|
[1943] | 897 | if (*pctrl_chr == BLK_START_AN_AFIO_OR_SLICE) {
|
---|
[1933] | 898 | log_msg(1, "No acl attributes found, skipping to afio files");
|
---|
| 899 | return(0);
|
---|
| 900 | } else {
|
---|
[1943] | 901 | if (*pctrl_chr != BLK_START_EXTENDED_ATTRIBUTES) {
|
---|
[1933] | 902 | wrong_marker(BLK_START_EXTENDED_ATTRIBUTES, *pctrl_chr);
|
---|
| 903 | }
|
---|
| 904 | }
|
---|
[128] | 905 | }
|
---|
[1933] | 906 | // acl
|
---|
[948] | 907 | if (g_getfacl) {
|
---|
[955] | 908 | res = read_header_block_from_stream(ptmp_size, fname, pctrl_chr);
|
---|
[948] | 909 | if (*pctrl_chr != BLK_START_EXAT_FILE) {
|
---|
| 910 | wrong_marker(BLK_START_EXAT_FILE, *pctrl_chr);
|
---|
| 911 | }
|
---|
[1940] | 912 | if (strstr(fname, "acl") == NULL) {
|
---|
[3185] | 913 | mr_asprintf(tmp,"Wrong order expected acl, got %s, sunshine.", fname);
|
---|
[1940] | 914 | fatal_error(tmp);
|
---|
| 915 | }
|
---|
[1645] | 916 | read_file_from_stream_to_file(acl_fname, *ptmp_size);
|
---|
[1940] | 917 | res = read_header_block_from_stream(ptmp_size, fname, pctrl_chr);
|
---|
[948] | 918 | if (*pctrl_chr != BLK_STOP_EXAT_FILE) {
|
---|
| 919 | wrong_marker(BLK_STOP_EXAT_FILE, *pctrl_chr);
|
---|
| 920 | }
|
---|
[1940] | 921 | res = read_header_block_from_stream(ptmp_size, fname, pctrl_chr);
|
---|
[948] | 922 | if (*pctrl_chr != BLK_STOP_EXTENDED_ATTRIBUTES) {
|
---|
| 923 | wrong_marker(BLK_STOP_EXTENDED_ATTRIBUTES, *pctrl_chr);
|
---|
| 924 | }
|
---|
| 925 | log_msg(1, "Got acl");
|
---|
[128] | 926 | }
|
---|
[1933] | 927 | // tarball itself
|
---|
[128] | 928 | res = read_header_block_from_stream(ptmp_size, tmp_fname, pctrl_chr);
|
---|
[1933] | 929 | log_msg(1, "End of extended attributes, now looking for afioball");
|
---|
[3116] | 930 | return (res);
|
---|
[1] | 931 | }
|
---|
| 932 |
|
---|
| 933 |
|
---|
[3877] | 934 | /**
|
---|
| 935 | * Copy @p infile to the opened stream (CD or tape).
|
---|
| 936 | * @param bkpinfo The backup information structure. @c bkpinfo->media_size is the only field used.
|
---|
| 937 | * @param infile The file to write to the stream.
|
---|
| 938 | * @return 0 for success, nonzero for failure.
|
---|
| 939 | */
|
---|
| 940 | int write_file_to_stream_from_file(char *infile)
|
---|
| 941 | {
|
---|
| 942 | /*@ buffers **************************************************** */
|
---|
| 943 | char datablock[TAPE_BLOCK_SIZE];
|
---|
| 944 | char *checksum = NULL;
|
---|
| 945 | char *infile_basename;
|
---|
| 946 |
|
---|
| 947 | /*@ int ******************************************************** */
|
---|
| 948 | int retval = 0;
|
---|
| 949 | int noof_blocks;
|
---|
| 950 |
|
---|
| 951 | /* unsigned int ch; */
|
---|
| 952 | unsigned int crc16;
|
---|
| 953 | unsigned int crctt;
|
---|
| 954 |
|
---|
| 955 | /*@ pointers *************************************************** */
|
---|
| 956 | FILE *fin;
|
---|
| 957 | char *p;
|
---|
| 958 |
|
---|
| 959 | /*@ long ******************************************************* */
|
---|
| 960 | long bytes_to_read = 0;
|
---|
| 961 | long i;
|
---|
| 962 |
|
---|
| 963 | off_t filesize;
|
---|
| 964 |
|
---|
| 965 | #ifdef EXTRA_TAPE_CHECKSUMS
|
---|
| 966 | int ch;
|
---|
| 967 | #endif
|
---|
| 968 |
|
---|
| 969 | /*@ initialize ************************************************ */
|
---|
| 970 | crc16 = 0;
|
---|
| 971 | crctt = 0;
|
---|
| 972 |
|
---|
| 973 |
|
---|
| 974 |
|
---|
| 975 | /*@ end vars *************************************************** */
|
---|
| 976 |
|
---|
| 977 | infile_basename = strrchr(infile, '/');
|
---|
| 978 | if (infile_basename) {
|
---|
| 979 | infile_basename++;
|
---|
| 980 | } else {
|
---|
| 981 | infile_basename = infile;
|
---|
| 982 | }
|
---|
| 983 | filesize = length_of_file(infile);
|
---|
| 984 | if (should_we_write_to_next_tape(bkpinfo->media_size, filesize)) {
|
---|
| 985 | start_to_write_to_next_tape();
|
---|
| 986 | write_backcatalog_to_tape();
|
---|
| 987 | }
|
---|
| 988 | p = strrchr(infile, '/');
|
---|
| 989 | if (!p) {
|
---|
| 990 | p = infile;
|
---|
| 991 | } else {
|
---|
| 992 | p++;
|
---|
| 993 | }
|
---|
| 994 | log_it("Writing file '%s' to tape (%ld KB)", p, (long) filesize >> 10);
|
---|
| 995 | write_header_block_to_stream(filesize, infile_basename, BLK_START_FILE);
|
---|
| 996 | //go_here_to_restart_saving_of_file:
|
---|
| 997 | if (!(fin = fopen(infile, "r"))) {
|
---|
| 998 | log_OS_error(infile);
|
---|
| 999 | return (1);
|
---|
| 1000 | }
|
---|
| 1001 | for (noof_blocks = 0; filesize > 0;
|
---|
| 1002 | noof_blocks++, filesize -= bytes_to_read) {
|
---|
| 1003 | if (filesize < TAPE_BLOCK_SIZE) {
|
---|
| 1004 | bytes_to_read = (long) filesize;
|
---|
| 1005 | for (i = 0; i < TAPE_BLOCK_SIZE; i++) {
|
---|
| 1006 | datablock[i] = '\0';
|
---|
| 1007 | }
|
---|
| 1008 | } else {
|
---|
| 1009 | bytes_to_read = TAPE_BLOCK_SIZE;
|
---|
| 1010 | }
|
---|
| 1011 | if (fread(datablock, 1, (size_t) bytes_to_read, fin)) {
|
---|
| 1012 | // FIXME
|
---|
| 1013 | }
|
---|
| 1014 | g_tape_posK +=
|
---|
| 1015 | fwrite(datablock, 1, /*bytes_to_read */
|
---|
| 1016 | (size_t) TAPE_BLOCK_SIZE,
|
---|
| 1017 | g_tape_stream) / 1024;
|
---|
| 1018 | if (g_sigpipe) {
|
---|
| 1019 | log_it("Sigpipe occurred recently. I'll start a new tape.");
|
---|
| 1020 | fclose(fin);
|
---|
| 1021 | g_sigpipe = FALSE;
|
---|
| 1022 | start_to_write_to_next_tape();
|
---|
| 1023 | write_backcatalog_to_tape(); // kinda-sorta recursive :)
|
---|
| 1024 | return (0);
|
---|
| 1025 | }
|
---|
| 1026 | #ifdef EXTRA_TAPE_CHECKSUMS
|
---|
| 1027 | for (i = 0; i < bytes_to_read; i++) {
|
---|
| 1028 | ch = datablock[i];
|
---|
| 1029 | crc16 = updcrcr(crc16, (unsigned) ch);
|
---|
| 1030 | crctt = updcrc(crctt, (unsigned) ch);
|
---|
| 1031 | }
|
---|
| 1032 | #endif
|
---|
| 1033 | }
|
---|
| 1034 | paranoid_fclose(fin);
|
---|
| 1035 | mr_asprintf(checksum, "%04x%04x", crc16, crctt);
|
---|
| 1036 | /* TODO: what does it do ??? */
|
---|
| 1037 | write_header_block_to_stream((off_t)g_current_media_number, checksum, BLK_STOP_FILE);
|
---|
| 1038 | mr_free(checksum);
|
---|
| 1039 |
|
---|
| 1040 | // log_it("File '%s' written to tape.", infile);
|
---|
| 1041 | return (retval);
|
---|
| 1042 | }
|
---|
| 1043 |
|
---|
| 1044 |
|
---|
| 1045 |
|
---|
| 1046 |
|
---|
| 1047 |
|
---|
| 1048 |
|
---|
| 1049 |
|
---|
| 1050 |
|
---|
[1645] | 1051 | int write_EXAT_files_to_tape(char *xattr_fname,
|
---|
[128] | 1052 | char *acl_fname)
|
---|
[1] | 1053 | {
|
---|
[128] | 1054 | int res = 0;
|
---|
[948] | 1055 | if (g_getfattr) {
|
---|
[955] | 1056 | // xattr
|
---|
[3860] | 1057 | write_header_block_to_stream(length_of_file(xattr_fname), xattr_fname, BLK_START_EXTENDED_ATTRIBUTES);
|
---|
| 1058 | write_header_block_to_stream(length_of_file(xattr_fname), xattr_fname, BLK_START_EXAT_FILE);
|
---|
[1645] | 1059 | write_file_to_stream_from_file(xattr_fname);
|
---|
[948] | 1060 | write_header_block_to_stream((off_t)-1, xattr_fname, BLK_STOP_EXAT_FILE);
|
---|
[3860] | 1061 | write_header_block_to_stream(length_of_file(xattr_fname), xattr_fname, BLK_STOP_EXTENDED_ATTRIBUTES);
|
---|
[948] | 1062 | }
|
---|
| 1063 | if (g_getfacl) {
|
---|
[955] | 1064 | // acl
|
---|
[3860] | 1065 | write_header_block_to_stream(length_of_file(acl_fname), acl_fname, BLK_START_EXTENDED_ATTRIBUTES);
|
---|
| 1066 | write_header_block_to_stream(length_of_file(acl_fname), acl_fname, BLK_START_EXAT_FILE);
|
---|
[1645] | 1067 | write_file_to_stream_from_file(acl_fname);
|
---|
[948] | 1068 | write_header_block_to_stream((off_t)-1, acl_fname, BLK_STOP_EXAT_FILE);
|
---|
[3860] | 1069 | write_header_block_to_stream(length_of_file(acl_fname), acl_fname, BLK_STOP_EXTENDED_ATTRIBUTES);
|
---|
[948] | 1070 | }
|
---|
[128] | 1071 | return (res);
|
---|
[1] | 1072 | }
|
---|
| 1073 |
|
---|
| 1074 |
|
---|
| 1075 |
|
---|
| 1076 |
|
---|
| 1077 | /**
|
---|
| 1078 | * Debugging aid - log the offset we're at on the tape (reading or writing).
|
---|
| 1079 | */
|
---|
[128] | 1080 | void log_tape_pos(void)
|
---|
[1] | 1081 | {
|
---|
[128] | 1082 | /*@ buffers ***************************************************** */
|
---|
[1] | 1083 |
|
---|
| 1084 |
|
---|
[128] | 1085 | /*@ end vars *************************************************** */
|
---|
[1] | 1086 |
|
---|
[128] | 1087 | log_it("Tape position -- %ld KB (%ld MB)", (long) g_tape_posK,
|
---|
| 1088 | (long) g_tape_posK >> 10);
|
---|
[1] | 1089 | }
|
---|
| 1090 |
|
---|
| 1091 |
|
---|
| 1092 |
|
---|
| 1093 |
|
---|
| 1094 | /**
|
---|
| 1095 | * Add a file to a collection of recently archived filesets/slices.
|
---|
| 1096 | * The type is determined by the filename: if it contains ".afio." it is
|
---|
| 1097 | * assumed to be a fileset, otherwise if it contains "slice" it's a slice,
|
---|
| 1098 | * otherwise we generate a fatal_error().
|
---|
| 1099 | * @param td The current @c bkpinfo->tempdir (file will be placed in <tt>td</tt>/tmpfs/backcatalog/).
|
---|
| 1100 | * @param latest_fname The file to place in the collection.
|
---|
| 1101 | * @return 0, always.
|
---|
| 1102 | * @bug Return value is redundant.
|
---|
| 1103 | * @bug The detection won't work for uncompressed afioballs (they end in ".afio", no dot afterwards). // Not true. They end in '.' -Hugo
|
---|
| 1104 | */
|
---|
| 1105 | int maintain_collection_of_recent_archives(char *td, char *latest_fname)
|
---|
| 1106 | {
|
---|
[128] | 1107 | long long final_alleged_writeK, final_projected_certain_writeK,
|
---|
[3060] | 1108 | cposK, bufsize_K;
|
---|
[128] | 1109 | int last, curr, i;
|
---|
[2520] | 1110 | char *command = NULL;
|
---|
| 1111 | char *tmpdir = NULL;
|
---|
| 1112 | char *old_fname = NULL;
|
---|
[128] | 1113 | char *p;
|
---|
| 1114 | char suffix[16];
|
---|
[1] | 1115 |
|
---|
[128] | 1116 | bufsize_K = (long long) (1024LL * (1 + g_tape_buffer_size_MB));
|
---|
| 1117 | if ((p = strrchr(latest_fname, '.'))) {
|
---|
| 1118 | strcpy(suffix, ++p);
|
---|
| 1119 | } else {
|
---|
| 1120 | suffix[0] = '\0';
|
---|
[1] | 1121 | }
|
---|
[3185] | 1122 | mr_asprintf(tmpdir, "%s/tmpfs/backcatalog", td);
|
---|
[128] | 1123 | mkdir(tmpdir, 0x700);
|
---|
[3185] | 1124 | mr_asprintf(command, "cp -f %s %s", latest_fname, tmpdir);
|
---|
[128] | 1125 | if (run_program_and_log_output(command, 6)) {
|
---|
| 1126 | log_it("Warning - failed to copy %s to backcatalog at %s",
|
---|
| 1127 | latest_fname, tmpdir);
|
---|
| 1128 | }
|
---|
[2520] | 1129 | mr_free(command);
|
---|
| 1130 |
|
---|
[128] | 1131 | last = g_tapecatalog->entries - 1;
|
---|
| 1132 | if (last <= 0) {
|
---|
[2230] | 1133 | log_it("Too early to start deleting from collection.");
|
---|
[2520] | 1134 | mr_free(tmpdir);
|
---|
[128] | 1135 | return (0);
|
---|
| 1136 | }
|
---|
| 1137 | final_alleged_writeK = g_tapecatalog->el[last].tape_posK;
|
---|
| 1138 | final_projected_certain_writeK = final_alleged_writeK - bufsize_K;
|
---|
| 1139 | for (curr = last; curr >= 0; curr--) {
|
---|
| 1140 | cposK = g_tapecatalog->el[curr].tape_posK;
|
---|
| 1141 | if (cposK < final_projected_certain_writeK) {
|
---|
| 1142 | break;
|
---|
| 1143 | }
|
---|
| 1144 | }
|
---|
| 1145 | if (curr < 0) {
|
---|
[2230] | 1146 | log_it("Not far enough into tape to start deleting old archives from collection.");
|
---|
[2520] | 1147 | mr_free(tmpdir);
|
---|
[128] | 1148 | return (0);
|
---|
| 1149 | }
|
---|
[1] | 1150 |
|
---|
[128] | 1151 | for (i = curr - 1; i >= 0 && curr - i < 10; i--) {
|
---|
[3185] | 1152 | mr_asprintf(old_fname, "%s/%s", tmpdir, g_tapecatalog->el[i].fname);
|
---|
[128] | 1153 | unlink(old_fname);
|
---|
[2520] | 1154 | mr_free(old_fname);
|
---|
[128] | 1155 | }
|
---|
[2520] | 1156 | mr_free(tmpdir);
|
---|
[128] | 1157 | return (0);
|
---|
[1] | 1158 | }
|
---|
| 1159 |
|
---|
| 1160 |
|
---|
[3878] | 1161 | int set_tape_block_size_with_mt(long internal_tape_block_size)
|
---|
| 1162 | {
|
---|
| 1163 | char *tmp = NULL;
|
---|
| 1164 | int res;
|
---|
[1] | 1165 |
|
---|
[3878] | 1166 | if (bkpinfo->media_device == NULL) {
|
---|
| 1167 | return(1);
|
---|
| 1168 | }
|
---|
| 1169 |
|
---|
| 1170 | if (strncmp(bkpinfo->media_device, "/dev/", 5)) {
|
---|
| 1171 | log_msg(1, "Not using 'mt setblk'. This isn't an actual /dev entry.");
|
---|
| 1172 | return (0);
|
---|
| 1173 | }
|
---|
| 1174 | mr_asprintf(tmp, "mt -f %s setblk %ld", bkpinfo->media_device, internal_tape_block_size);
|
---|
| 1175 | res = run_program_and_log_output(tmp, 3);
|
---|
| 1176 | mr_free(tmp);
|
---|
| 1177 | return (res);
|
---|
| 1178 | }
|
---|
| 1179 |
|
---|
| 1180 |
|
---|
[3877] | 1181 | /**
|
---|
[3878] | 1182 | * Handle OBDR if we were asked to do so
|
---|
| 1183 | * @param tapedev The tape device to open for reading.
|
---|
| 1184 | */
|
---|
| 1185 | int skip_obdr(void)
|
---|
| 1186 | {
|
---|
| 1187 | char *command = NULL;
|
---|
| 1188 | int res = 0;
|
---|
| 1189 |
|
---|
| 1190 | if (bkpinfo->media_device == NULL) {
|
---|
| 1191 | return(1);
|
---|
| 1192 | }
|
---|
| 1193 |
|
---|
| 1194 | log_it("Skipping OBDR headers");
|
---|
| 1195 | mr_asprintf(command, "mt -f %s rewind",bkpinfo->media_device);
|
---|
| 1196 | res = run_program_and_log_output(command, 1);
|
---|
| 1197 | paranoid_free(command);
|
---|
| 1198 |
|
---|
| 1199 | mr_asprintf(command, "mt -f %s fsf 2",bkpinfo->media_device);
|
---|
| 1200 | res = run_program_and_log_output(command, 1);
|
---|
| 1201 | paranoid_free(command);
|
---|
| 1202 |
|
---|
| 1203 | set_tape_block_size_with_mt(bkpinfo->internal_tape_block_size);
|
---|
| 1204 | return(res);
|
---|
| 1205 | }
|
---|
| 1206 |
|
---|
| 1207 |
|
---|
| 1208 |
|
---|
| 1209 | /**
|
---|
[3877] | 1210 | * Open the tape device for input.
|
---|
| 1211 | * @param bkpinfo The backup information structure. Fields used:
|
---|
| 1212 | * - @c bkpinfo->media_device
|
---|
| 1213 | * - @c bkpinfo->tmpdir
|
---|
| 1214 | * @return 0 for success, nonzero for failure.
|
---|
| 1215 | */
|
---|
| 1216 | int openin_tape()
|
---|
| 1217 | {
|
---|
| 1218 | /*@ buffer ***************************************************** */
|
---|
| 1219 | char fname[MAX_STR_LEN];
|
---|
| 1220 | char *datablock;
|
---|
| 1221 | char *tmp = NULL;
|
---|
| 1222 | char *old_pwd = NULL;
|
---|
| 1223 | char *outfname = NULL;
|
---|
| 1224 | /*@ int ******************************************************* */
|
---|
| 1225 | int i;
|
---|
| 1226 | int j;
|
---|
| 1227 | int res = 0;
|
---|
| 1228 | long length, templong;
|
---|
| 1229 | size_t k;
|
---|
| 1230 | int retval = 0;
|
---|
| 1231 | int ctrl_chr;
|
---|
[1] | 1232 |
|
---|
[3877] | 1233 | /*@ long long ************************************************* */
|
---|
| 1234 | long long size;
|
---|
| 1235 |
|
---|
| 1236 | /*@ pointers ************************************************** */
|
---|
| 1237 | FILE *fout;
|
---|
| 1238 |
|
---|
| 1239 | /*@ end vars *************************************************** */
|
---|
| 1240 |
|
---|
| 1241 | g_tapecatalog = mr_malloc(sizeof(struct s_tapecatalog));
|
---|
| 1242 | g_tapecatalog->entries = 0;
|
---|
| 1243 | g_tape_posK = 0;
|
---|
| 1244 | if (g_tape_stream) {
|
---|
| 1245 | log_it("FYI - I won't 'openin' the tape. It's already open.");
|
---|
| 1246 | return (0);
|
---|
| 1247 | }
|
---|
| 1248 |
|
---|
[3878] | 1249 | // mondoarchive should have configured everything to give the right non-rewinding device
|
---|
| 1250 | if (bkpinfo->media_device == NULL) {
|
---|
| 1251 | log_it("Not able to open tape - no tape device found");
|
---|
| 1252 | return (1);
|
---|
| 1253 | }
|
---|
| 1254 | if (bkpinfo->use_obdr) {
|
---|
[3877] | 1255 | res = skip_obdr();
|
---|
| 1256 | if (res != 0) {
|
---|
| 1257 | log_it("Not able to skip OBDR - Restore will have to be done manually");
|
---|
[3878] | 1258 | return (1);
|
---|
[3877] | 1259 | }
|
---|
| 1260 | } else {
|
---|
| 1261 | set_tape_block_size_with_mt(bkpinfo->internal_tape_block_size);
|
---|
| 1262 | }
|
---|
| 1263 |
|
---|
| 1264 | insist_on_this_tape_number(1);
|
---|
| 1265 | mr_asprintf(outfname, "%s/tmp/all.tar.gz", bkpinfo->tmpdir);
|
---|
| 1266 | make_hole_for_file(outfname);
|
---|
| 1267 |
|
---|
| 1268 | log_it("Opening IN tape");
|
---|
| 1269 | if (!(g_tape_stream = open_device_via_buffer(bkpinfo->media_device, 'r', bkpinfo->internal_tape_block_size))) {
|
---|
| 1270 | log_OS_error(g_tape_fifo);
|
---|
| 1271 | log_to_screen("Cannot openin stream device");
|
---|
| 1272 | mr_free(outfname);
|
---|
| 1273 | return (1);
|
---|
| 1274 | }
|
---|
| 1275 | log_to_screen("Reading stream");
|
---|
| 1276 | log_it("stream device = '%s'", bkpinfo->media_device);
|
---|
| 1277 | /* skip data disks */
|
---|
| 1278 | open_evalcall_form("Skipping data disks on stream");
|
---|
| 1279 | log_to_screen("Skipping data disks on stream");
|
---|
| 1280 | if (!(fout = fopen(outfname, "w"))) {
|
---|
| 1281 | log_OS_error(outfname);
|
---|
| 1282 | log_to_screen("Cannot openout datadisk all.tar.gz file");
|
---|
| 1283 | mr_free(outfname);
|
---|
| 1284 | return (-1);
|
---|
| 1285 | }
|
---|
| 1286 | if (!(datablock = (char *) malloc(256 * 1024))) {
|
---|
| 1287 | log_to_screen("Unable to malloc 256*1024");
|
---|
| 1288 | mr_free(outfname);
|
---|
| 1289 | finish(1);
|
---|
| 1290 | }
|
---|
| 1291 | for (i = 0; i < 32; i++) {
|
---|
| 1292 | for (j = 0; j < 4; j++) {
|
---|
| 1293 | for (length = 0, k = 0; length < 256 * 1024; length += k) {
|
---|
| 1294 | k = fread(datablock + length, 1, 256 * 1024 - length,
|
---|
| 1295 | g_tape_stream);
|
---|
| 1296 | }
|
---|
| 1297 | if (fwrite(datablock, 1, (size_t) length, fout)) {
|
---|
| 1298 | // FIXME
|
---|
| 1299 | }
|
---|
| 1300 | g_tape_posK += length / 1024;
|
---|
| 1301 | }
|
---|
| 1302 | if (i > 8) // otherwise, 'buffer' distorts calculations
|
---|
| 1303 | {
|
---|
| 1304 | templong = ((i - 8) * 4 + j) * 100 / (128 - 8 * 4);
|
---|
| 1305 | update_evalcall_form((int) (templong));
|
---|
| 1306 | }
|
---|
| 1307 | }
|
---|
| 1308 | paranoid_fclose(fout);
|
---|
| 1309 | paranoid_free(datablock);
|
---|
| 1310 |
|
---|
| 1311 | /* find initial blocks */
|
---|
| 1312 | res = read_header_block_from_stream(&size, fname, &ctrl_chr);
|
---|
| 1313 | retval += res;
|
---|
| 1314 | if (ctrl_chr != BLK_START_OF_TAPE) {
|
---|
| 1315 | wrong_marker(BLK_START_OF_TAPE, ctrl_chr);
|
---|
| 1316 | }
|
---|
| 1317 | res = read_header_block_from_stream(&size, fname, &ctrl_chr);
|
---|
| 1318 | retval += res;
|
---|
| 1319 | if (ctrl_chr != BLK_START_OF_BACKUP) {
|
---|
| 1320 | wrong_marker(BLK_START_OF_BACKUP, ctrl_chr);
|
---|
| 1321 | }
|
---|
| 1322 | close_evalcall_form();
|
---|
| 1323 | log_it("Saved all.tar.gz to '%s'", outfname);
|
---|
| 1324 | old_pwd = mr_getcwd();
|
---|
| 1325 | if (chdir(bkpinfo->tmpdir)) {
|
---|
| 1326 | // FIXME
|
---|
| 1327 | }
|
---|
| 1328 | mr_asprintf(tmp, "tar -zxf %s ./tmp/mondorestore.cfg 2> /dev/null", outfname);
|
---|
| 1329 | paranoid_system(tmp);
|
---|
| 1330 | mr_free(tmp);
|
---|
| 1331 |
|
---|
| 1332 | paranoid_system("cp -f tmp/mondorestore.cfg . 2> /dev/null");
|
---|
| 1333 | if (chdir(old_pwd)) {
|
---|
| 1334 | // FIXME
|
---|
| 1335 | }
|
---|
| 1336 | mr_free(old_pwd);
|
---|
| 1337 | unlink(outfname);
|
---|
| 1338 | mr_free(outfname);
|
---|
| 1339 | return (retval);
|
---|
| 1340 | }
|
---|
| 1341 |
|
---|
| 1342 |
|
---|
| 1343 |
|
---|
[1] | 1344 | /**
|
---|
[1951] | 1345 | * Return the non-rewinding device when passed the normal one
|
---|
| 1346 | * @param tapedev The tape device to open for writing.
|
---|
| 1347 | * @note the caller needs to free the string returned
|
---|
| 1348 | */
|
---|
| 1349 | char *get_non_rewind_dev(char *tapedev)
|
---|
| 1350 | {
|
---|
[1] | 1351 |
|
---|
[1951] | 1352 | char *ntapedev = NULL;
|
---|
| 1353 | char *p = NULL;
|
---|
| 1354 | char *q = NULL;
|
---|
| 1355 | char *r = NULL;
|
---|
| 1356 |
|
---|
[3620] | 1357 | ntapedev = (char *)mr_malloc(strlen(tapedev)+2*sizeof(char));
|
---|
[1951] | 1358 | p = strrchr(tapedev,'/');
|
---|
| 1359 | if (p == NULL) {
|
---|
| 1360 | log_it("Didn't find a '/' in %s",tapedev);
|
---|
| 1361 | return(NULL);
|
---|
| 1362 | }
|
---|
| 1363 |
|
---|
| 1364 | /* Copy tapedev content up to the last / */
|
---|
| 1365 | q = tapedev;
|
---|
| 1366 | r = ntapedev;
|
---|
| 1367 | while (q != p) {
|
---|
| 1368 | *r = *q;
|
---|
| 1369 | r++;
|
---|
| 1370 | q++;
|
---|
| 1371 | }
|
---|
| 1372 | /* Copy the '/' */
|
---|
| 1373 | *r = *q;
|
---|
| 1374 | r++;
|
---|
| 1375 | q++;
|
---|
| 1376 | /* Adds a 'n' - non-rewinding */
|
---|
| 1377 | *r = 'n';
|
---|
| 1378 | r++;
|
---|
| 1379 | /* Copy the rest of tapedev */
|
---|
| 1380 | while (*q != '\0') {
|
---|
| 1381 | *r = *q;
|
---|
| 1382 | r++;
|
---|
| 1383 | q++;
|
---|
| 1384 | }
|
---|
| 1385 | *r = '\0';
|
---|
| 1386 | if (mt_says_tape_exists(ntapedev)) {
|
---|
| 1387 | log_it("Non-rewinding tape device is %s",ntapedev);
|
---|
| 1388 | } else {
|
---|
| 1389 | log_it("Unable to find non-rewinding tape device.");
|
---|
| 1390 | ntapedev = NULL;
|
---|
| 1391 | }
|
---|
| 1392 | return(ntapedev);
|
---|
| 1393 | }
|
---|
| 1394 |
|
---|
[1949] | 1395 | /**
|
---|
| 1396 | * Handle OBDR if we were asked to do so
|
---|
[1954] | 1397 | * @param tapedev The tape device to open for writing.
|
---|
| 1398 | * @return 0 for success, nonzero for failure.
|
---|
| 1399 | * @note This should be called ONLY from backup processes. It will OVERWRITE ANY
|
---|
| 1400 | * EXISTING DATA on the tape!
|
---|
| 1401 | */
|
---|
[1968] | 1402 | int create_obdr(void)
|
---|
[1949] | 1403 | {
|
---|
| 1404 |
|
---|
| 1405 | char *command = NULL;
|
---|
| 1406 | int res = 0;
|
---|
| 1407 |
|
---|
[3191] | 1408 | if (bkpinfo->media_device == NULL) {
|
---|
| 1409 | return(1);
|
---|
| 1410 | }
|
---|
| 1411 |
|
---|
[1955] | 1412 | log_it("Creating OBDR headers");
|
---|
[1949] | 1413 | /* OBDR: First block 10 kB of zero bs = 512 */
|
---|
[3185] | 1414 | mr_asprintf(command, "mt -f %s compression off",bkpinfo->media_device);
|
---|
[1949] | 1415 | res = run_program_and_log_output(command, 1);
|
---|
| 1416 | paranoid_free(command);
|
---|
| 1417 |
|
---|
[3185] | 1418 | mr_asprintf(command, "mt -f %s rewind",bkpinfo->media_device);
|
---|
[1955] | 1419 | res += run_program_and_log_output(command, 1);
|
---|
[1949] | 1420 | paranoid_free(command);
|
---|
| 1421 |
|
---|
[1954] | 1422 | set_tape_block_size_with_mt(512);
|
---|
[1949] | 1423 |
|
---|
[3185] | 1424 | mr_asprintf(command, "dd if=/dev/zero of=%s bs=512 count=20",bkpinfo->media_device);
|
---|
[1955] | 1425 | res += run_program_and_log_output(command, 1);
|
---|
[1949] | 1426 | paranoid_free(command);
|
---|
| 1427 |
|
---|
| 1428 | /* OBDR: then ISO boot image bs = 2048 */
|
---|
[1954] | 1429 | set_tape_block_size_with_mt(2048);
|
---|
[1949] | 1430 |
|
---|
[3527] | 1431 | mr_asprintf(command, "dd if=%s of=%s bs=2048",MINDI_CACHE"/mindi.iso",bkpinfo->media_device);
|
---|
[1955] | 1432 | res += run_program_and_log_output(command, 1);
|
---|
[1949] | 1433 | paranoid_free(command);
|
---|
| 1434 |
|
---|
[1954] | 1435 | set_tape_block_size_with_mt(bkpinfo->internal_tape_block_size);
|
---|
[2900] | 1436 |
|
---|
| 1437 | /* restore compression mode on */
|
---|
[3185] | 1438 | mr_asprintf(command, "mt -f %s compression on",bkpinfo->media_device);
|
---|
[2900] | 1439 | res = run_program_and_log_output(command, 1);
|
---|
| 1440 | paranoid_free(command);
|
---|
| 1441 |
|
---|
[1955] | 1442 | return(res);
|
---|
[1949] | 1443 | }
|
---|
| 1444 |
|
---|
| 1445 |
|
---|
[1] | 1446 | /**
|
---|
| 1447 | * Start writing to a tape device for the backup.
|
---|
[1948] | 1448 | * Handle OBDR if we were asked to do so
|
---|
[1] | 1449 | * @param tapedev The tape device to open for writing.
|
---|
| 1450 | * @return 0 for success, nonzero for failure.
|
---|
| 1451 | * @note This should be called ONLY from backup processes. It will OVERWRITE ANY
|
---|
| 1452 | * EXISTING DATA on the tape!
|
---|
| 1453 | */
|
---|
[1954] | 1454 | int openout_tape() {
|
---|
[1] | 1455 |
|
---|
[1954] | 1456 | g_current_media_number = 1;
|
---|
| 1457 | if (g_tape_stream) {
|
---|
| 1458 | log_it("FYI - I won't 'openout' the tape. It's already open.");
|
---|
[128] | 1459 | return (0);
|
---|
[1] | 1460 | }
|
---|
[3191] | 1461 | if (bkpinfo->media_device == NULL) {
|
---|
| 1462 | log_it("Unable to openout NULL device");
|
---|
| 1463 | return(1);
|
---|
[1954] | 1464 | }
|
---|
[3191] | 1465 | g_tapecatalog = mr_malloc(sizeof(struct s_tapecatalog));
|
---|
[1954] | 1466 | g_tapecatalog->entries = 0;
|
---|
| 1467 | g_tape_posK = 0;
|
---|
[1] | 1468 |
|
---|
[1956] | 1469 | if (bkpinfo->use_obdr) {
|
---|
[1954] | 1470 | create_obdr();
|
---|
| 1471 | } else {
|
---|
| 1472 | set_tape_block_size_with_mt(bkpinfo->internal_tape_block_size);
|
---|
| 1473 | }
|
---|
| 1474 | log_it("Opening OUT tape");
|
---|
[3191] | 1475 | if (!(g_tape_stream = open_device_via_buffer(bkpinfo->media_device, 'w', bkpinfo->internal_tape_block_size))) {
|
---|
[1954] | 1476 | log_OS_error(g_tape_fifo);
|
---|
| 1477 | log_to_screen("Cannot openin stream device");
|
---|
| 1478 | return (1);
|
---|
| 1479 | }
|
---|
| 1480 | return (0);
|
---|
| 1481 | }
|
---|
[1] | 1482 |
|
---|
| 1483 |
|
---|
| 1484 | /**
|
---|
[3878] | 1485 | * Copy a file from the currently opened stream (CD or tape) to the stream indicated
|
---|
| 1486 | * by @p fout.
|
---|
| 1487 | * @param bkpinfo The backup information structure. @c bkpinfo->media_size is the only field used.
|
---|
| 1488 | * @param fout The stream to write the file to.
|
---|
| 1489 | * @param size The size of the file in bytes.
|
---|
[1] | 1490 | * @return 0 for success, nonzero for failure.
|
---|
| 1491 | */
|
---|
[3877] | 1492 | int
|
---|
[3878] | 1493 | read_file_from_stream_to_stream(FILE * fout, long long size)
|
---|
[1] | 1494 | {
|
---|
[2520] | 1495 |
|
---|
[3878] | 1496 | /*@ int ******************************************************** */
|
---|
| 1497 | int res;
|
---|
[3191] | 1498 |
|
---|
[3877] | 1499 | /*@ end vars *************************************************** */
|
---|
| 1500 |
|
---|
[3878] | 1501 | res = read_file_from_stream_FULL(NULL, fout, size);
|
---|
| 1502 | /* fflush(g_tape_stream);
|
---|
| 1503 | fflush(fout);*/
|
---|
| 1504 | return (res);
|
---|
[1] | 1505 | }
|
---|
| 1506 |
|
---|
| 1507 |
|
---|
[3877] | 1508 | /**
|
---|
| 1509 | * Add specified file/slice to the internal catalog of all archives written.
|
---|
| 1510 | * This lets us restart on a new CD/tape/whatever if it runs out of room. We just
|
---|
| 1511 | * write the last [buffer size] MB from the catalog to the new tape, so we know
|
---|
| 1512 | * we have @e all archives on some CD/tape/whatever.
|
---|
| 1513 | * @param type The type of file we're cataloging (afioball, slice, something else)
|
---|
| 1514 | * @param number The fileset number or biggiefile number.
|
---|
| 1515 | * @param aux The slice number if it's a biggiefile, or any other additional info.
|
---|
| 1516 | * @param fn The original full pathname of the file we're recording.
|
---|
| 1517 | * @return The index of the record we just added.
|
---|
| 1518 | */
|
---|
| 1519 | int register_in_tape_catalog(t_archtype type, int number, long aux,
|
---|
| 1520 | char *fn)
|
---|
| 1521 | {
|
---|
| 1522 | int last;
|
---|
| 1523 | char fname[MAX_TAPECAT_FNAME_LEN+1];
|
---|
| 1524 | char *p;
|
---|
[1] | 1525 |
|
---|
[3877] | 1526 | p = strrchr(fn, '/');
|
---|
| 1527 | if (p) {
|
---|
| 1528 | p++;
|
---|
| 1529 | } else {
|
---|
| 1530 | p = fn;
|
---|
| 1531 | }
|
---|
| 1532 | strncpy(fname, p, MAX_TAPECAT_FNAME_LEN);
|
---|
| 1533 | fname[MAX_TAPECAT_FNAME_LEN] = '\0';
|
---|
| 1534 | last = g_tapecatalog->entries;
|
---|
| 1535 | if (last >= MAX_TAPECATALOG_ENTRIES) {
|
---|
| 1536 | log_it
|
---|
| 1537 | ("Warning - can't log #%d in tape catalog - too many entries already",
|
---|
| 1538 | number);
|
---|
| 1539 | return (-1);
|
---|
| 1540 | }
|
---|
| 1541 | g_tapecatalog->el[last].type = type;
|
---|
| 1542 | g_tapecatalog->el[last].number = number;
|
---|
| 1543 | g_tapecatalog->el[last].aux = aux;
|
---|
| 1544 | g_tapecatalog->el[last].tape_posK = g_tape_posK;
|
---|
| 1545 | strcpy(g_tapecatalog->el[last].fname, fname);
|
---|
| 1546 | g_tapecatalog->entries++;
|
---|
| 1547 | return (last); // returns the index of the record we've jsut added
|
---|
| 1548 | }
|
---|
| 1549 |
|
---|
| 1550 |
|
---|
| 1551 |
|
---|
| 1552 |
|
---|
[1] | 1553 | /**
|
---|
| 1554 | * Write a bufferfull of the most recent archives to the tape. The
|
---|
| 1555 | * rationale behind this is a bit complex. If the previous tape ended
|
---|
| 1556 | * suddenly (EOF or otherwise) some archives were probably left in the
|
---|
| 1557 | * buffer. That means that Mondo thinks they have been written, but
|
---|
| 1558 | * the external binary @c buffer has not actually written them. So to
|
---|
| 1559 | * be safe, we start the new tape by writing the last bufferfull from
|
---|
| 1560 | * the old one. This insures that all archives will be on at least
|
---|
| 1561 | * one tape. Sounds inelegant, but it works.
|
---|
| 1562 | * @param bkpinfo The backup information structure. @c bkpinfo->tmpdir is the only field used.
|
---|
| 1563 | * @return 0 for success, nonzero for failure.
|
---|
| 1564 | */
|
---|
[1645] | 1565 | int write_backcatalog_to_tape()
|
---|
[1] | 1566 | {
|
---|
[128] | 1567 | int i, last, res = 0;
|
---|
[2520] | 1568 | char *fname = NULL;
|
---|
[1] | 1569 |
|
---|
[128] | 1570 | log_msg(2, "I am now writing back catalog to tape");
|
---|
| 1571 | last = g_tapecatalog->entries - 1;
|
---|
| 1572 | for (i = 0; i <= last; i++) {
|
---|
[3185] | 1573 | mr_asprintf(fname, "%s/tmpfs/backcatalog/%s", bkpinfo->tmpdir, g_tapecatalog->el[i].fname);
|
---|
[128] | 1574 | if (!does_file_exist(fname)) {
|
---|
| 1575 | log_msg(6, "Can't write %s - it doesn't exist.", fname);
|
---|
| 1576 | } else {
|
---|
[3860] | 1577 | write_header_block_to_stream(length_of_file(fname), "start-backcatalog-afio-or-slice", BLK_START_AN_AFIO_OR_SLICE);
|
---|
[128] | 1578 | log_msg(2, "Writing %s", fname);
|
---|
[1645] | 1579 | if (write_file_to_stream_from_file(fname)) {
|
---|
[128] | 1580 | res++;
|
---|
| 1581 | log_msg(2, "%s failed", fname);
|
---|
| 1582 | }
|
---|
| 1583 | if (i != last) {
|
---|
[3860] | 1584 | write_header_block_to_stream((off_t)0, "stop-backcatalog-afio-or-slice", BLK_STOP_AN_AFIO_OR_SLICE);
|
---|
[128] | 1585 | }
|
---|
| 1586 | }
|
---|
[2520] | 1587 | mr_free(fname);
|
---|
[128] | 1588 | }
|
---|
| 1589 | log_msg(2, "Finished writing back catalog to tape");
|
---|
| 1590 | return (res);
|
---|
[1] | 1591 | }
|
---|
| 1592 |
|
---|
| 1593 |
|
---|
| 1594 |
|
---|
| 1595 | /**
|
---|
| 1596 | * Write all.tar.gz (produced by Mindi) to the first 32M of the first tape.
|
---|
| 1597 | * @param fname The path to all.tar.gz.
|
---|
| 1598 | * @return 0 for success, nonzero for failure.
|
---|
| 1599 | */
|
---|
[128] | 1600 | int write_data_disks_to_stream(char *fname)
|
---|
[1] | 1601 | {
|
---|
[128] | 1602 | /*@ pointers *************************************************** */
|
---|
| 1603 | FILE *fin;
|
---|
[1] | 1604 |
|
---|
[128] | 1605 | /*@ long ******************************************************* */
|
---|
| 1606 | long m = -1;
|
---|
| 1607 | long templong;
|
---|
[1] | 1608 |
|
---|
[128] | 1609 | /*@ int ******************************************************** */
|
---|
| 1610 | int i, j;
|
---|
[1] | 1611 |
|
---|
[128] | 1612 | /*@ buffers **************************************************** */
|
---|
| 1613 | char tempblock[256 * 1024];
|
---|
[1] | 1614 |
|
---|
[128] | 1615 | /*@ end vars *************************************************** */
|
---|
[1] | 1616 |
|
---|
[541] | 1617 | open_evalcall_form("Writing data disks to tape");
|
---|
| 1618 | log_to_screen("Writing data disks to tape");
|
---|
[128] | 1619 | log_it("Data disks = %s", fname);
|
---|
| 1620 | if (!does_file_exist(fname)) {
|
---|
[3191] | 1621 | log_to_screen("Cannot find %s", fname);
|
---|
[128] | 1622 | return (1);
|
---|
[1] | 1623 | }
|
---|
[128] | 1624 | if (!(fin = fopen(fname, "r"))) {
|
---|
| 1625 | log_OS_error(fname);
|
---|
| 1626 | fatal_error("Cannot openin the data disk");
|
---|
| 1627 | }
|
---|
| 1628 | for (i = 0; i < 32; i++) { /* 32MB */
|
---|
| 1629 | for (j = 0; j < 4; j++) { /* 256K x 4 = 1MB (1024K) */
|
---|
| 1630 | if (!feof(fin)) {
|
---|
| 1631 | m = (long) fread(tempblock, 1, 256 * 1024, fin);
|
---|
| 1632 | } else {
|
---|
| 1633 | m = 0;
|
---|
| 1634 | }
|
---|
| 1635 | for (; m < 256 * 1024; m++) {
|
---|
| 1636 | tempblock[m] = '\0';
|
---|
| 1637 | }
|
---|
| 1638 | g_tape_posK +=
|
---|
| 1639 | fwrite(tempblock, 1, 256 * 1024, g_tape_stream) / 1024;
|
---|
| 1640 | }
|
---|
| 1641 | if (i > g_tape_buffer_size_MB) // otherwise, 'buffer' distorts calculations
|
---|
| 1642 | {
|
---|
| 1643 | templong = ((i - 8) * 4 + j) * 100 / (128 - 8 * 4);
|
---|
| 1644 | update_evalcall_form((int) (templong));
|
---|
| 1645 | }
|
---|
| 1646 | }
|
---|
| 1647 | paranoid_fclose(fin);
|
---|
| 1648 | close_evalcall_form();
|
---|
| 1649 | return (0);
|
---|
[1] | 1650 | }
|
---|
| 1651 |
|
---|
| 1652 |
|
---|
| 1653 |
|
---|
| 1654 |
|
---|
| 1655 | /* @} - end of streamGroup */
|
---|