[1] | 1 | /* libmondo-stream.c
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| 2 | $Id: libmondo-stream.c,v 1.4 2004/06/21 20:20:36 hugo Exp $
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| 3 |
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| 4 | ...tools for talking to tapes, Monitas streams, etc.
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| 5 |
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| 6 |
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| 7 | 07/10
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| 8 | - added ACL and XATTR support
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| 9 |
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| 10 | 04/17
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| 11 | - added bkpinfo->internal_tape_block_size
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| 12 | - fixed bug in set_tape_block_size_with_mt()
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| 13 |
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| 14 | 03/25
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| 15 | - call 'mt' when opening tape in/out, to set block size to 32K
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| 16 |
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| 17 | 02/06/2004
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| 18 | - only eject_device() at end of closein_tape() --- not closeout_tape()
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| 19 |
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| 20 | 10/26/2003
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| 21 | - call eject_device() at end of closein_tape() and closeout_tape()
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| 22 |
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| 23 | 09/25
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| 24 | - added docu-header to each subroutine
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| 25 |
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| 26 | 09/20
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| 27 | - working on multi-tape code
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| 28 | - friendlier message in insist_on_this_tape_number()
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| 29 | - delay is now 5s
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| 30 |
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| 31 | 09/10
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| 32 | - adding multi-tape support
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| 33 | - adding 'back catalog' of previous archives, so that we may resume
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| 34 | from point of end-of-tape (approx.)
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| 35 |
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| 36 | 09/08
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| 37 | - cleaned up insist_on_this_tape_number() --- 10s delay for same tape now
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| 38 |
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| 39 | 08/27
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| 40 | - improved find_tape_device_and_size() --- tries /dev/osst*
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| 41 |
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| 42 | 05/05
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| 43 | - added Joshua Oreman's FreeBSD patches
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| 44 |
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| 45 | 04/24
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| 46 | - added lots of assert()'s and log_OS_error()'s
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| 47 |
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| 48 | 04/06/2003
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| 49 | - use find_home_of_exe() instead of which
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| 50 |
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| 51 | 12/13/2002
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| 52 | - cdrecord -scanbus call was missing 2> /dev/null
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| 53 |
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| 54 | 11/24
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| 55 | - disabled fatal_error("Bad marker")
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| 56 |
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| 57 | 10/29
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| 58 | - replaced convoluted grep wih wc (KP)
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| 59 |
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| 60 | 09/07
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| 61 | - removed g_end_of_tape_reached
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| 62 | - lots of multitape-related fixes
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| 63 |
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| 64 | 08/01 - 08/31
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| 65 | - write 16MB of zeroes to end of tape when closing(out)
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| 66 | - compensate for 'buffer' and its distortion of speed of writing/reading
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| 67 | when writing/reading data disks at start of tape
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| 68 | - rewrote lots of multitape stuff
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| 69 | - wrote workaround to allow >2GB of archives w/buffering
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| 70 | - do not close/reopen tape when starting to read/write from
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| 71 | new tape: no need! 'buffer' handles all that; we're writing
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| 72 | to/reading from a FIFO, so no need to close/reopen when new tape
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| 73 | - write 8MB of zeroes at end of tape, just in case
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| 74 | - re-enable various calls to *_evalcall_form
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| 75 | - added g_end_of_tape_reached
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| 76 | - fixed bugs in start_to_[read|write]_[to|from]_next_tape
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| 77 | - added internal buffering, replacing the external 'buffer' exe
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| 78 | - wait 10 seconds (after user inserts new tape), to
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| 79 | let tape stabilize in drive
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| 80 | - added insist_on_this_tape_number()
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| 81 | - worked on find_tape_device_and_size()
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| 82 | - cleaned up some log_it() calls
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| 83 | - added find_tape_device_and_size()
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| 84 | - replaced using_cdstream with backup_media_type
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| 85 | - replace *_from_tape with *_from_stream
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| 86 | - replace *_to_stream with *_to_stream
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| 87 |
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| 88 | 07/01 - 07/31
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| 89 | - leave 32MB at end of tape, to avoid overrunning
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| 90 | - started [07/24/2002]
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| 91 | */
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| 92 |
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| 93 |
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| 94 | /**
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| 95 | * @file
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| 96 | * Functions for writing data to/reading data from streams (tape, CD stream, etc.)
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| 97 | */
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| 98 |
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| 99 | #include "my-stuff.h"
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| 100 | #include "mondostructures.h"
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| 101 | #include "libmondo-devices.h"
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| 102 | #include "lib-common-externs.h"
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| 103 | #include "libmondo-stream.h"
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| 104 | #include "libmondo-string-EXT.h"
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| 105 | #include "libmondo-files-EXT.h"
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| 106 | #include "libmondo-gui-EXT.h"
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| 107 | #include "libmondo-fork-EXT.h"
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| 108 | #include "libmondo-tools-EXT.h"
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| 109 | #include "libmondo-fifo-EXT.h"
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| 110 |
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| 111 | #define EXTRA_TAPE_CHECKSUMS
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| 112 |
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| 113 | /*@unused@*/
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| 114 | //static char cvsid[] = "$Id: libmondo-stream.c,v 1.4 2004/06/21 20:20:36 hugo Exp $";
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| 115 | extern bool g_sigpipe;
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| 116 | extern int g_tape_buffer_size_MB;
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| 117 |
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| 118 | /**
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| 119 | * @addtogroup globalGroup
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| 120 | * @{
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| 121 | */
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| 122 | /**
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| 123 | * The file pointer for the opened tape/CD stream.
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| 124 | * Opened and closed by openin_tape(), openin_cdstream(),
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| 125 | * openout_tape(), openout_cdstream(), closein_tape(), closein_cdstream(),
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| 126 | * closeout_tape(), and closeout_cdstream().
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| 127 | */
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| 128 | FILE *g_tape_stream = NULL;
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| 129 |
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| 130 |
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| 131 | /**
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| 132 | * The position (in kilobytes) where we are on the tape.
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| 133 | */
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| 134 | long long g_tape_posK = 0;
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| 135 |
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| 136 | /**
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| 137 | * The current media number we're using. This value is 1-based.
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| 138 | */
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| 139 | int g_current_media_number=-1;
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| 140 |
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| 141 | /**
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| 142 | * The tape catalog that keeps track of files written to tape.
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| 143 | */
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| 144 | struct s_tapecatalog *g_tapecatalog;
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| 145 |
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| 146 | /* @} - end of globalGroup */
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| 147 |
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| 148 | int write_backcatalog_to_tape (struct s_bkpinfo *bkpinfo);
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| 149 |
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| 150 |
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| 151 |
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| 152 |
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| 153 |
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| 154 | /**
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| 155 | * @addtogroup streamGroup
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| 156 | * @{
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| 157 | */
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| 158 | /**
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| 159 | * Close the global output file descriptor which Mondo has used to read
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| 160 | * from the CD stream.
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| 161 | * @param bkpinfo The backup information structure. Passed directly to closein_tape().
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| 162 | * @return 0 for success, nonzero for failure.
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| 163 | * @note This should be called by restore processes only.
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| 164 | */
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| 165 | int
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| 166 | closein_cdstream (struct s_bkpinfo *bkpinfo)
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| 167 | {
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| 168 | return (closein_tape (bkpinfo));
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| 169 | }
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| 170 |
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| 171 |
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| 172 | /**
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| 173 | * Close the global output file descriptor which Mondo has used to read
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| 174 | * from buffer or dd, which read from the tape.
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| 175 | * @param bkpinfo The backup information structure. Unused.
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| 176 | * @return 0 for success, nonzero for failure.
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| 177 | * @note This should be called by restore processes only.
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| 178 | * @note This function also works for cdstreams for now, but don't count on this behavior.
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| 179 | * @bug @p bkpinfo parameter is unused.
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| 180 | */
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| 181 | int
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| 182 | closein_tape (struct s_bkpinfo *bkpinfo)
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| 183 | {
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| 184 | /*@ int's ********************************************************/
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| 185 | int retval = 0;
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| 186 | int res = 0;
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| 187 | int ctrl_chr = '\0';
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| 188 |
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| 189 | /*@ buffers ******************************************************/
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| 190 | char fname[MAX_STR_LEN];
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| 191 |
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| 192 | /*@ long long's **************************************************/
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| 193 | long long size;
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| 194 | char *blk;
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| 195 | int i;
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| 196 |
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| 197 | blk = (char*)malloc(256*1024);
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| 198 |
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| 199 | log_it("closein_tape() -- entering");
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| 200 | res = read_header_block_from_stream (&size, fname, &ctrl_chr);
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| 201 | retval += res;
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| 202 | if (ctrl_chr != BLK_END_OF_BACKUP)
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| 203 | {
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| 204 | wrong_marker (BLK_END_OF_BACKUP, ctrl_chr);
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| 205 | }
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| 206 | res = read_header_block_from_stream (&size, fname, &ctrl_chr);
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| 207 | retval += res;
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| 208 | if (ctrl_chr != BLK_END_OF_TAPE)
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| 209 | {
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| 210 | wrong_marker (BLK_END_OF_TAPE, ctrl_chr);
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| 211 | }
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| 212 | for(i=0; i<8 && !feof(g_tape_stream); i++)
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| 213 | {
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| 214 | (void) fread (blk, 1, 256*1024, g_tape_stream);
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| 215 | }
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| 216 | sleep(1);
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| 217 | paranoid_system("sync");
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| 218 | sleep(1);
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| 219 | paranoid_pclose (g_tape_stream);
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| 220 | log_it("closein_tape() -- leaving");
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| 221 | /*
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| 222 | for(i=0; i < g_tapecatalog->entries; i++)
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| 223 | {
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| 224 | log_it("i=%d type=%s num=%d aux=%ld", i, (g_tapecatalog->el[i].type==fileset)?"fileset":"bigslice", g_tapecatalog->el[i].number, g_tapecatalog->el[i].aux);
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| 225 | }
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| 226 | */
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| 227 | if (!bkpinfo->please_dont_eject)
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| 228 | { eject_device(bkpinfo->media_device); }
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| 229 | paranoid_free(blk);
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| 230 | paranoid_free(g_tapecatalog);
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| 231 | return (retval);
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| 232 | }
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| 233 |
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| 234 |
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| 235 |
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| 236 | /**
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| 237 | * Close the global output file descriptor which Mondo has been using to write
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| 238 | * to the tape device (via buffer or dd).
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| 239 | * @param bkpinfo The backup information structure. @c bkpinfo->media_size is the only field used.
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| 240 | * @return 0 for success, nonzero for failure.
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| 241 | * @note This should be called by backup processes only.
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| 242 | */
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| 243 | int
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| 244 | closeout_tape (struct s_bkpinfo *bkpinfo)
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| 245 | {
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| 246 | /*@ int's ********************************************************/
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| 247 | int retval = 0;
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| 248 | // int res = 0;
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| 249 | // int ctrl_chr = '\0';
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| 250 |
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| 251 | /*@ buffers ******************************************************/
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| 252 | // char fname[MAX_STR_LEN];
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| 253 |
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| 254 | /*@ long long's **************************************************/
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| 255 | // long long size;
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| 256 | int i;
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| 257 | char *blk;
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| 258 |
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| 259 | blk = (char*)malloc(256*1024);
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| 260 |
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| 261 | sleep(1);
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| 262 | paranoid_system("sync");
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| 263 | sleep(1);
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| 264 | log_it("closeout_tape() -- entering");
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| 265 | retval+=write_header_block_to_stream (0, "end-of-backup", BLK_END_OF_BACKUP);
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| 266 | retval+=write_header_block_to_stream (0, "end-of-tape", BLK_END_OF_TAPE); /* just in case */
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| 267 | /* write 1MB of crap */
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| 268 | for (i = 0; i < 256*1024; i++)
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| 269 | {
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| 270 | blk[i] = (int)(random()&0xFF);
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| 271 | }
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| 272 | for (i = 0; i < 4*8; i++)
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| 273 | {
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| 274 | (void) fwrite (blk, 1, 256*1024, g_tape_stream);
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| 275 | if (should_we_write_to_next_tape (bkpinfo->media_size[g_current_media_number], 256*1024))
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| 276 | {
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| 277 | start_to_write_to_next_tape (bkpinfo);
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| 278 | }
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| 279 | }
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| 280 | /* write 1MB of zeroes */
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| 281 | /*
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| 282 | for (i = 0; i < 256*1024; i++)
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| 283 | {
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| 284 | blk[i] = 0;
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| 285 | }
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| 286 | for (i = 0; i < 4; i++)
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| 287 | {
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| 288 | fwrite (blk, 1, 256*1024, g_tape_stream);
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| 289 | if (should_we_write_to_next_tape (bkpinfo->media_size[g_current_media_number], 256*1024))
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| 290 | {
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| 291 | start_to_write_to_next_tape (bkpinfo);
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| 292 | }
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| 293 | }
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| 294 | */
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| 295 | sleep(2);
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| 296 | paranoid_pclose (g_tape_stream);
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| 297 | log_it("closeout_tape() -- leaving");
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| 298 | for(i=0; i<g_tapecatalog->entries; i++)
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| 299 | {
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| 300 | log_it("i=%d type=%s num=%d aux=%ld posK=%lld", i, (g_tapecatalog->el[i].type==fileset)?"fileset":"bigslice", g_tapecatalog->el[i].number, g_tapecatalog->el[i].aux, g_tapecatalog->el[i].tape_posK);
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| 301 | }
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| 302 | // if (!bkpinfo->please_dont_eject)
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| 303 | // { eject_device(bkpinfo->media_device); }
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| 304 | paranoid_free(blk);
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| 305 | paranoid_free(g_tapecatalog);
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| 306 | return (retval);
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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 | bool mt_says_tape_exists(char*dev)
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| 312 | {
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| 313 | char *command;
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| 314 | int res;
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| 315 |
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| 316 | malloc_string(command);
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| 317 | sprintf(command, "mt -f %s status", dev);
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| 318 | res = run_program_and_log_output(command, 1);
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| 319 | paranoid_free(command);
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| 320 | if (res) { return(FALSE); } else { return(TRUE); }
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| 321 | }
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| 322 |
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| 323 |
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| 324 |
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| 325 | /**
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| 326 | * Determine the name and size of the tape device. Tries the SCSI tape for
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| 327 | * this platform, then the IDE tape, then "/dev/st0", then "/dev/osst0".
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| 328 | * @param dev Where to put the found tape device.
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| 329 | * @param siz Where to put the tape size (a string like "4GB")
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| 330 | * @return 0 if success, nonzero if failure (in which @p dev and @p siz are undefined).
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| 331 | */
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| 332 | int
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| 333 | find_tape_device_and_size (char*dev, char*siz)
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| 334 | {
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| 335 | char tmp[MAX_STR_LEN];
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| 336 | char command[MAX_STR_LEN*2];
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| 337 | char cdr_exe[MAX_STR_LEN];
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| 338 | // char tape_description_[MAX_STR_LEN];
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| 339 | // char tape_manufacturer_cdr[MAX_STR_LEN];
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| 340 | // FILE*fin;
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| 341 | int res;
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| 342 |
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| 343 | log_to_screen("I am looking for your tape streamer. Please wait.");
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| 344 | dev[0] = siz[0] = '\0';
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| 345 | if (find_home_of_exe("cdrecord"))
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| 346 | { strcpy(cdr_exe, "cdrecord"); }
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| 347 | else
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| 348 | { strcpy(cdr_exe, "dvdrecord"); }
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| 349 | sprintf(command, "%s -scanbus 2> /dev/null | grep -i tape | wc -l", cdr_exe);
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| 350 | strcpy (tmp, call_program_and_get_last_line_of_output(command));
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| 351 | if (atoi(tmp)!=1)
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| 352 | {
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| 353 | log_it("Either too few or too many tape streamers for me to detect...");
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| 354 | strcpy(dev, VANILLA_SCSI_TAPE);
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| 355 | return 1;
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| 356 | }
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| 357 | sprintf(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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| 358 | strcpy (tmp, call_program_and_get_last_line_of_output(command));
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| 359 | if (strlen (tmp) < 2)
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| 360 | {
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| 361 | log_it ("Could not find tape device");
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| 362 | return 1;
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| 363 | }
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| 364 | sprintf(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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| 365 | strcpy (tmp, call_program_and_get_last_line_of_output(command));
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| 366 | strcpy (dev, VANILLA_SCSI_TAPE);
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| 367 | dev[strlen(dev)-1] = '\0';
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| 368 | strcat(dev, tmp); // e.g. '/dev/st0' becomes '/dev/stN'
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| 369 | res = 0;
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| 370 | if (!mt_says_tape_exists(dev))
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| 371 | {
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| 372 | strcpy(dev, ALT_TAPE);
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| 373 | if (!mt_says_tape_exists(dev))
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| 374 | {
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| 375 | log_it ("Cannot openin %s", dev);
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| 376 | strcpy(dev, "/dev/st0");
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| 377 | if (!mt_says_tape_exists(dev))
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| 378 | {
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| 379 | log_it ("Cannot openin %s", dev);
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| 380 | strcpy(dev, "/dev/osst0");
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| 381 | if (!mt_says_tape_exists(dev))
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| 382 | { res++; }
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| 383 | else
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| 384 | { res=0; }
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| 385 | }
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| 386 | }
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| 387 | }
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| 388 |
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| 389 | log_it("At this point, dev = %s and res = %d" , dev, res);
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| 390 |
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| 391 | strcpy(tmp, call_program_and_get_last_line_of_output("\
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| 392 | cdrecord -scanbus 2> /dev/null | tr -s '\t' ' ' | \
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| 393 | grep \"[0-9]*,[0-9]*,[0-9]*\" | grep -v \"[0-9]*) \\*\" | grep -i TAPE | \
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| 394 | awk '{for(i=1; i<NF; i++) { if (index($i, \"GB\")>0) { print $i;};};};'"));
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| 395 |
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| 396 | if (mt_says_tape_exists(dev))
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| 397 | { res = 0; }
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| 398 | else
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| 399 | {
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| 400 | log_it("Turning %s", dev);
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| 401 | strcpy(tmp, (strrchr(dev, '/')!=NULL)?strrchr(dev, '/'):dev);
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| 402 | sprintf(dev, "/dev/os%s", tmp);
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| 403 | log_it("...into %s", dev);
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| 404 | if (mt_says_tape_exists(dev))
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| 405 | { res=0; }
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---|
| 406 | else
|
---|
| 407 | { res++; }
|
---|
| 408 | }
|
---|
| 409 |
|
---|
| 410 | siz[0] = '\0';
|
---|
| 411 | log_it("res=%d; dev=%s", res, dev);
|
---|
| 412 |
|
---|
| 413 | if (res) { return(res); }
|
---|
| 414 |
|
---|
| 415 | if (strlen(tmp)<2) { siz[0]='\0'; log_it("Warning - size of tape unknown"); return(0); }
|
---|
| 416 | else { strcpy(siz, tmp); return(0); }
|
---|
| 417 | }
|
---|
| 418 |
|
---|
| 419 |
|
---|
| 420 |
|
---|
| 421 |
|
---|
| 422 |
|
---|
| 423 |
|
---|
| 424 | int read_EXAT_files_from_tape(struct s_bkpinfo *bkpinfo, long long *ptmp_size, char *tmp_fname, int *pctrl_chr, char*xattr_fname, char*acl_fname)
|
---|
| 425 | {
|
---|
| 426 | int res=0;
|
---|
| 427 | int retval=0;
|
---|
| 428 |
|
---|
| 429 | // xattr
|
---|
| 430 | res = read_header_block_from_stream(ptmp_size, tmp_fname, pctrl_chr);
|
---|
| 431 | if(*pctrl_chr!=BLK_START_EXAT_FILE){wrong_marker(BLK_START_EXAT_FILE,*pctrl_chr);}
|
---|
| 432 | if (!strstr(tmp_fname, "xattr")) { fatal_error("Wrong order, sunshine."); }
|
---|
| 433 | read_file_from_stream_to_file(bkpinfo, xattr_fname, *ptmp_size);
|
---|
| 434 | res = read_header_block_from_stream(ptmp_size, tmp_fname, pctrl_chr);
|
---|
| 435 | if(*pctrl_chr!= BLK_STOP_EXAT_FILE) {wrong_marker(BLK_STOP_EXAT_FILE,*pctrl_chr);}
|
---|
| 436 | // acl
|
---|
| 437 | res = read_header_block_from_stream(ptmp_size, tmp_fname, pctrl_chr);
|
---|
| 438 | if (!strstr(tmp_fname, "acl")) { fatal_error("Wrong order, sunshine."); }
|
---|
| 439 | if(*pctrl_chr!=BLK_START_EXAT_FILE){wrong_marker(BLK_START_EXAT_FILE,*pctrl_chr);}
|
---|
| 440 | read_file_from_stream_to_file(bkpinfo, acl_fname, *ptmp_size);
|
---|
| 441 | res = read_header_block_from_stream(ptmp_size, tmp_fname, pctrl_chr);
|
---|
| 442 | if(*pctrl_chr!= BLK_STOP_EXAT_FILE){wrong_marker(BLK_STOP_EXAT_FILE,*pctrl_chr);}
|
---|
| 443 | res=read_header_block_from_stream(ptmp_size, tmp_fname, pctrl_chr);
|
---|
| 444 | if(*pctrl_chr!= BLK_STOP_EXTENDED_ATTRIBUTES)
|
---|
| 445 | { wrong_marker(BLK_STOP_EXTENDED_ATTRIBUTES,*pctrl_chr); }
|
---|
| 446 | // tarball itself
|
---|
| 447 | res=read_header_block_from_stream(ptmp_size, tmp_fname, pctrl_chr);
|
---|
| 448 | log_msg(1, "Got xattr and acl; now looking for afioball");
|
---|
| 449 | return(retval);
|
---|
| 450 | }
|
---|
| 451 |
|
---|
| 452 |
|
---|
| 453 | int write_EXAT_files_to_tape(struct s_bkpinfo *bkpinfo, char*xattr_fname, char*acl_fname)
|
---|
| 454 | {
|
---|
| 455 | int res=0;
|
---|
| 456 | // EXATs
|
---|
| 457 | write_header_block_to_stream(length_of_file(xattr_fname), xattr_fname, BLK_START_EXTENDED_ATTRIBUTES);
|
---|
| 458 | // xattr
|
---|
| 459 | write_header_block_to_stream(length_of_file(xattr_fname), xattr_fname, BLK_START_EXAT_FILE);
|
---|
| 460 | write_file_to_stream_from_file(bkpinfo, xattr_fname);
|
---|
| 461 | write_header_block_to_stream(-1, xattr_fname, BLK_STOP_EXAT_FILE);
|
---|
| 462 | // acl
|
---|
| 463 | write_header_block_to_stream(length_of_file(acl_fname), acl_fname, BLK_START_EXAT_FILE);
|
---|
| 464 | write_file_to_stream_from_file(bkpinfo, acl_fname);
|
---|
| 465 | write_header_block_to_stream(-1, acl_fname, BLK_STOP_EXAT_FILE);
|
---|
| 466 | write_header_block_to_stream(length_of_file(xattr_fname), xattr_fname, BLK_STOP_EXTENDED_ATTRIBUTES);
|
---|
| 467 | return(res);
|
---|
| 468 | }
|
---|
| 469 |
|
---|
| 470 |
|
---|
| 471 |
|
---|
| 472 |
|
---|
| 473 | /**
|
---|
| 474 | * Tell the user to insert tape @p tapeno and wait for it to settle (5 seconds).
|
---|
| 475 | * @param tapeno The tape number to insist on.
|
---|
| 476 | * @bug There is currently no way to actually verify that the user has actually
|
---|
| 477 | * inserted the right tape.
|
---|
| 478 | */
|
---|
| 479 | void insist_on_this_tape_number(int tapeno)
|
---|
| 480 | {
|
---|
| 481 | int i;
|
---|
| 482 | char tmp[MAX_STR_LEN];
|
---|
| 483 |
|
---|
| 484 | log_it("Insisting on tape #%d", tapeno);
|
---|
| 485 | if (g_current_media_number != tapeno)
|
---|
| 486 | {
|
---|
| 487 | // log_it("g_current_media_number = %d", g_current_media_number);
|
---|
| 488 | sprintf(tmp, "When the tape drive goes quiet, please insert volume %d in this series.", tapeno);
|
---|
| 489 | popup_and_OK (tmp);
|
---|
| 490 | open_evalcall_form ("Waiting while the tape drive settles");
|
---|
| 491 | }
|
---|
| 492 | else
|
---|
| 493 | {
|
---|
| 494 | open_evalcall_form ("Waiting while the tape drive rewinds");
|
---|
| 495 | }
|
---|
| 496 |
|
---|
| 497 | for(i=0; i<=100; i+=2)
|
---|
| 498 | {
|
---|
| 499 | usleep(100000);
|
---|
| 500 | update_evalcall_form (i);
|
---|
| 501 | }
|
---|
| 502 | close_evalcall_form();
|
---|
| 503 | log_it("I assume user has inserted it. They _say_ they have...");
|
---|
| 504 | g_current_media_number = tapeno;
|
---|
| 505 |
|
---|
| 506 | // log_it("g_current_media_number = %d", g_current_media_number);
|
---|
| 507 | log_it("OK, I've finished insisting. On with the revelry.");
|
---|
| 508 | }
|
---|
| 509 |
|
---|
| 510 |
|
---|
| 511 |
|
---|
| 512 |
|
---|
| 513 | /**
|
---|
| 514 | * Debugging aid - log the offset we're at on the tape (reading or writing).
|
---|
| 515 | */
|
---|
| 516 | void
|
---|
| 517 | log_tape_pos (void)
|
---|
| 518 | {
|
---|
| 519 | /*@ buffers ******************************************************/
|
---|
| 520 |
|
---|
| 521 |
|
---|
| 522 | /*@ end vars ****************************************************/
|
---|
| 523 |
|
---|
| 524 | log_it ("Tape position -- %ld KB (%ld MB)", (long) g_tape_posK,
|
---|
| 525 | (long) g_tape_posK >> 10);
|
---|
| 526 | }
|
---|
| 527 |
|
---|
| 528 |
|
---|
| 529 |
|
---|
| 530 |
|
---|
| 531 | /**
|
---|
| 532 | * Add a file to a collection of recently archived filesets/slices.
|
---|
| 533 | * The type is determined by the filename: if it contains ".afio." it is
|
---|
| 534 | * assumed to be a fileset, otherwise if it contains "slice" it's a slice,
|
---|
| 535 | * otherwise we generate a fatal_error().
|
---|
| 536 | * @param td The current @c bkpinfo->tempdir (file will be placed in <tt>td</tt>/tmpfs/backcatalog/).
|
---|
| 537 | * @param latest_fname The file to place in the collection.
|
---|
| 538 | * @return 0, always.
|
---|
| 539 | * @bug Return value is redundant.
|
---|
| 540 | * @bug The detection won't work for uncompressed afioballs (they end in ".afio", no dot afterwards). // Not true. They end in '.' -Hugo
|
---|
| 541 | */
|
---|
| 542 | int maintain_collection_of_recent_archives(char *td, char *latest_fname)
|
---|
| 543 | {
|
---|
| 544 | long long final_alleged_writeK, final_projected_certain_writeK, final_actually_certain_writeK=0, cposK, bufsize_K;
|
---|
| 545 | int last, curr, i;
|
---|
| 546 | t_archtype type=other;
|
---|
| 547 | char command[MAX_STR_LEN];
|
---|
| 548 | char tmpdir[MAX_STR_LEN];
|
---|
| 549 | char old_fname[MAX_STR_LEN];
|
---|
| 550 | char *p;
|
---|
| 551 | char suffix[16];
|
---|
| 552 |
|
---|
| 553 | bufsize_K = (long long)(1024LL * (1+g_tape_buffer_size_MB) );
|
---|
| 554 | sprintf(tmpdir, "%s/tmpfs/backcatalog", td);
|
---|
| 555 | if ((p=strrchr(latest_fname, '.'))) { strcpy(suffix, ++p); } else { suffix[0] = '\0'; }
|
---|
| 556 | if (strstr(latest_fname, ".afio.") || strstr(latest_fname, ".star.")) { type = fileset; }
|
---|
| 557 | else if (strstr(latest_fname, "slice")) { type = biggieslice; }
|
---|
| 558 | else
|
---|
| 559 | {
|
---|
| 560 | log_it("fname = %s", latest_fname);
|
---|
| 561 | fatal_error("Unknown type. Internal error in maintain_collection_of_recent_archives()");
|
---|
| 562 | }
|
---|
| 563 | mkdir(tmpdir, 0x700);
|
---|
| 564 | sprintf(command, "cp -f %s %s", latest_fname, tmpdir);
|
---|
| 565 | if (run_program_and_log_output(command, 6)) { log_it("Warning - failed to copy %s to backcatalog at %s", latest_fname, tmpdir); }
|
---|
| 566 | last = g_tapecatalog->entries-1;
|
---|
| 567 | if ( last<=0 )
|
---|
| 568 | {
|
---|
| 569 | iamhere("Too early to start deleting from collection.");
|
---|
| 570 | return( 0 );
|
---|
| 571 | }
|
---|
| 572 | final_alleged_writeK = g_tapecatalog->el[last].tape_posK;
|
---|
| 573 | final_projected_certain_writeK = final_alleged_writeK - bufsize_K;
|
---|
| 574 | for( curr=last; curr>=0; curr--)
|
---|
| 575 | {
|
---|
| 576 | cposK = g_tapecatalog->el[curr].tape_posK;
|
---|
| 577 | if (cposK < final_projected_certain_writeK)
|
---|
| 578 | {
|
---|
| 579 | final_actually_certain_writeK = cposK;
|
---|
| 580 | break;
|
---|
| 581 | }
|
---|
| 582 | }
|
---|
| 583 | if ( curr<0 )
|
---|
| 584 | {
|
---|
| 585 | iamhere( "Not far enough into tape to start deleting old archives from collection." );
|
---|
| 586 | return( 0 );
|
---|
| 587 | }
|
---|
| 588 | // log_it( "There are %lld KB (more than %d KB) in my backcatalog", final_alleged_writeK - final_actually_certain_writeK, bufsize_K);
|
---|
| 589 |
|
---|
| 590 | for(i=curr-1; i>=0 && curr-i<10; i--)
|
---|
| 591 | {
|
---|
| 592 | sprintf(old_fname, "%s/%s", tmpdir, g_tapecatalog->el[i].fname);
|
---|
| 593 | unlink(old_fname);
|
---|
| 594 | }
|
---|
| 595 | return(0);
|
---|
| 596 | }
|
---|
| 597 |
|
---|
| 598 |
|
---|
| 599 |
|
---|
| 600 |
|
---|
| 601 | /**
|
---|
| 602 | * Open the CD stream for input.
|
---|
| 603 | * @param bkpinfo The backup information structure. Passed to openin_tape().
|
---|
| 604 | * @return 0 for success, nonzero for failure.
|
---|
| 605 | * @note Equivalent to openin_tape() for now, but don't count on this behavior.
|
---|
| 606 | */
|
---|
| 607 | int
|
---|
| 608 | openin_cdstream (struct s_bkpinfo *bkpinfo)
|
---|
| 609 | {
|
---|
| 610 | return (openin_tape (bkpinfo));
|
---|
| 611 | }
|
---|
| 612 |
|
---|
| 613 | /**
|
---|
| 614 | * FIFO used to read/write to the tape device.
|
---|
| 615 | * @bug This seems obsolete now that we call an external @c buffer program. Please look onto this.
|
---|
| 616 | */
|
---|
| 617 | char g_tape_fifo[MAX_STR_LEN];
|
---|
| 618 |
|
---|
| 619 |
|
---|
| 620 |
|
---|
| 621 | int set_tape_block_size_with_mt(char*tapedev, long internal_tape_block_size)
|
---|
| 622 | {
|
---|
| 623 | char *tmp;
|
---|
| 624 | int res;
|
---|
| 625 |
|
---|
| 626 | if (strncmp(tapedev, "/dev/", 5))
|
---|
| 627 | {
|
---|
| 628 | log_msg(1, "Not using 'mt setblk'. This isn't an actual /dev entry.");
|
---|
| 629 | return(0);
|
---|
| 630 | }
|
---|
| 631 | malloc_string( tmp );
|
---|
| 632 | sprintf(tmp, "mt -f %s setblk %ld", tapedev, internal_tape_block_size);
|
---|
| 633 | res = run_program_and_log_output(tmp, 3);
|
---|
| 634 | paranoid_free( tmp );
|
---|
| 635 | return(res);
|
---|
| 636 | }
|
---|
| 637 |
|
---|
| 638 |
|
---|
| 639 |
|
---|
| 640 | /**
|
---|
| 641 | * Open the tape device for input.
|
---|
| 642 | * @param bkpinfo The backup information structure. Fields used:
|
---|
| 643 | * - @c bkpinfo->media_device
|
---|
| 644 | * - @c bkpinfo->tmpdir
|
---|
| 645 | * @return 0 for success, nonzero for failure.
|
---|
| 646 | * @note This will also work with a cdstream for now, but don't count on this behavior.
|
---|
| 647 | */
|
---|
| 648 | int
|
---|
| 649 | openin_tape (struct s_bkpinfo *bkpinfo)
|
---|
| 650 | {
|
---|
| 651 | /*@ buffer ******************************************************/
|
---|
| 652 | char fname[MAX_STR_LEN];
|
---|
| 653 | char *datablock;
|
---|
| 654 | char tmp[MAX_STR_LEN];
|
---|
| 655 | char old_cwd[MAX_STR_LEN];
|
---|
| 656 | char outfname[MAX_STR_LEN];
|
---|
| 657 | /*@ int ********************************************************/
|
---|
| 658 | int i;
|
---|
| 659 | int j;
|
---|
| 660 | int res;
|
---|
| 661 | long length, templong;
|
---|
| 662 | size_t k;
|
---|
| 663 | int retval = 0;
|
---|
| 664 | int ctrl_chr;
|
---|
| 665 |
|
---|
| 666 | /*@ long long **************************************************/
|
---|
| 667 | long long size;
|
---|
| 668 |
|
---|
| 669 | /*@ pointers ***************************************************/
|
---|
| 670 | FILE *fout;
|
---|
| 671 |
|
---|
| 672 | /*@ end vars ****************************************************/
|
---|
| 673 |
|
---|
| 674 | assert_string_is_neither_NULL_nor_zerolength(bkpinfo->media_device);
|
---|
| 675 | if (!(g_tapecatalog = malloc(sizeof(struct s_tapecatalog)))) { fatal_error("Cannot alloc mem for tape catalog"); }
|
---|
| 676 | g_tapecatalog->entries = 0;
|
---|
| 677 | g_tape_posK = 0;
|
---|
| 678 | if (g_tape_stream) { log_it("FYI - I won't 'openin' the tape. It's already open."); return(0); }
|
---|
| 679 | insist_on_this_tape_number(1);
|
---|
| 680 | sprintf (outfname, "%s/tmp/all.tar.gz", bkpinfo->tmpdir);
|
---|
| 681 | make_hole_for_file (outfname);
|
---|
| 682 |
|
---|
| 683 | set_tape_block_size_with_mt(bkpinfo->media_device, bkpinfo->internal_tape_block_size);
|
---|
| 684 |
|
---|
| 685 | // start_buffer_process( bkpinfo->media_device, g_tape_fifo, FALSE);
|
---|
| 686 | log_it ("Opening IN tape");
|
---|
| 687 | if (!(g_tape_stream = open_device_via_buffer(bkpinfo->media_device, 'r', bkpinfo->internal_tape_block_size))) { log_OS_error(g_tape_fifo); log_to_screen ("Cannot openin stream device"); return(1); }
|
---|
| 688 | log_to_screen ("Reading stream");
|
---|
| 689 | log_it ("stream device = '%s'", bkpinfo->media_device);
|
---|
| 690 | /* skip data disks */
|
---|
| 691 | open_evalcall_form ("Skipping data disks on stream");
|
---|
| 692 | log_to_screen ("Skipping data disks on stream");
|
---|
| 693 | if (!(fout = fopen (outfname, "w")))
|
---|
| 694 | {
|
---|
| 695 | log_OS_error(outfname);
|
---|
| 696 | log_to_screen ("Cannot openout datadisk all.tar.gz file");
|
---|
| 697 | return(-1);
|
---|
| 698 | }
|
---|
| 699 | if (!(datablock = (char*)malloc(256*1024))) { log_to_screen("Unable to malloc 256*1024"); exit(1); }
|
---|
| 700 | for (i = 0; i < 32; i++)
|
---|
| 701 | {
|
---|
| 702 | for (j = 0; j < 4; j++)
|
---|
| 703 | {
|
---|
| 704 | for(length=0, k=0; length<256*1024; length+=k)
|
---|
| 705 | {
|
---|
| 706 | k=fread(datablock+length, 1, 256*1024 - length, g_tape_stream);
|
---|
| 707 | }
|
---|
| 708 | (void) fwrite (datablock, 1, (size_t) length, fout);
|
---|
| 709 | g_tape_posK += length/1024;
|
---|
| 710 | }
|
---|
| 711 | if (i>8) // otherwise, 'buffer' distorts calculations
|
---|
| 712 | {
|
---|
| 713 | templong = ((i-8) * 4 + j) * 100 / (128-8*4);
|
---|
| 714 | update_evalcall_form ((int)(templong));
|
---|
| 715 | }
|
---|
| 716 | }
|
---|
| 717 | paranoid_fclose (fout);
|
---|
| 718 | paranoid_free(datablock);
|
---|
| 719 | /* find initial blocks */
|
---|
| 720 | res = read_header_block_from_stream (&size, fname, &ctrl_chr);
|
---|
| 721 | retval += res;
|
---|
| 722 | if (ctrl_chr != BLK_START_OF_TAPE)
|
---|
| 723 | {
|
---|
| 724 | wrong_marker (BLK_START_OF_TAPE, ctrl_chr);
|
---|
| 725 | }
|
---|
| 726 | res = read_header_block_from_stream (&size, fname, &ctrl_chr);
|
---|
| 727 | retval += res;
|
---|
| 728 | if (ctrl_chr != BLK_START_OF_BACKUP)
|
---|
| 729 | {
|
---|
| 730 | wrong_marker (BLK_START_OF_BACKUP, ctrl_chr);
|
---|
| 731 | }
|
---|
| 732 | close_evalcall_form ();
|
---|
| 733 | log_it ("Saved all.tar.gz to '%s'", outfname);
|
---|
| 734 | (void) getcwd (old_cwd, MAX_STR_LEN);
|
---|
| 735 | chdir (bkpinfo->tmpdir);
|
---|
| 736 | sprintf (tmp, "tar -zxf %s tmp/mondo-restore.cfg 2> /dev/null", outfname);
|
---|
| 737 | paranoid_system(tmp);
|
---|
| 738 | paranoid_system ("cp -f tmp/mondo-restore.cfg . 2> /dev/null");
|
---|
| 739 | chdir (old_cwd);
|
---|
| 740 | unlink (outfname);
|
---|
| 741 | return (retval);
|
---|
| 742 | }
|
---|
| 743 |
|
---|
| 744 |
|
---|
| 745 | /**
|
---|
| 746 | * Start writing to a CD stream.
|
---|
| 747 | * @param cddev The CD device to openout via cdrecord.
|
---|
| 748 | * @param speed The speed to write at.
|
---|
| 749 | * @return 0 for success, nonzero for failure.
|
---|
| 750 | * @note This should be called only from backup processes.
|
---|
| 751 | */
|
---|
| 752 | int
|
---|
| 753 | openout_cdstream (char *cddev, int speed)
|
---|
| 754 | {
|
---|
| 755 | /*@ buffers ******************************************************/
|
---|
| 756 | char command[MAX_STR_LEN*2];
|
---|
| 757 |
|
---|
| 758 | /*@ end vars ****************************************************/
|
---|
| 759 |
|
---|
| 760 | /* add 'dummy' if testing */
|
---|
| 761 | sprintf (command,
|
---|
| 762 | "cdrecord -eject dev=%s speed=%d fs=24m -waiti - >> %s 2>> %s",
|
---|
| 763 | cddev, speed, MONDO_LOGFILE, MONDO_LOGFILE);
|
---|
| 764 | /* initialise the catalog */
|
---|
| 765 | g_current_media_number = 1;
|
---|
| 766 | if (!(g_tapecatalog = malloc(sizeof(struct s_tapecatalog)))) { fatal_error("Cannot alloc mem for tape catalog"); }
|
---|
| 767 | g_tapecatalog->entries = 0;
|
---|
| 768 | /* log stuff */
|
---|
| 769 | log_it ("Opening OUT cdstream with the command");
|
---|
| 770 | log_it (command);
|
---|
| 771 | /* log_it("Let's see what happens, shall we?"); */
|
---|
| 772 | g_tape_stream = popen (command, "w");
|
---|
| 773 | if (g_tape_stream)
|
---|
| 774 | {
|
---|
| 775 | return (0);
|
---|
| 776 | }
|
---|
| 777 | else
|
---|
| 778 | {
|
---|
| 779 | log_to_screen ("Failed to openout to cdstream (fifo)");
|
---|
| 780 | return (1);
|
---|
| 781 | }
|
---|
| 782 | }
|
---|
| 783 |
|
---|
| 784 | /**
|
---|
| 785 | * Start writing to a tape device for the backup.
|
---|
| 786 | * @param tapedev The tape device to open for writing.
|
---|
| 787 | * @return 0 for success, nonzero for failure.
|
---|
| 788 | * @note This should be called ONLY from backup processes. It will OVERWRITE ANY
|
---|
| 789 | * EXISTING DATA on the tape!
|
---|
| 790 | */
|
---|
| 791 | int
|
---|
| 792 | openout_tape (char *tapedev, long internal_tape_block_size)
|
---|
| 793 | {
|
---|
| 794 | // char sz_call_to_buffer[MAX_STR_LEN];
|
---|
| 795 |
|
---|
| 796 | g_current_media_number = 1;
|
---|
| 797 | if (g_tape_stream) { log_it("FYI - I won't 'openout' the tape. It's already open."); return(0); }
|
---|
| 798 | if (!(g_tapecatalog = malloc(sizeof(struct s_tapecatalog)))) { fatal_error("Cannot alloc mem for tape catalog"); }
|
---|
| 799 | g_tapecatalog->entries = 0;
|
---|
| 800 | g_tape_posK = 0;
|
---|
| 801 |
|
---|
| 802 | set_tape_block_size_with_mt(tapedev, internal_tape_block_size);
|
---|
| 803 | log_it ("Opening OUT tape");
|
---|
| 804 | if (!(g_tape_stream = open_device_via_buffer(tapedev, 'w', internal_tape_block_size))) { log_OS_error(g_tape_fifo); log_to_screen ("Cannot openin stream device"); return(1); }
|
---|
| 805 | return(0);
|
---|
| 806 | }
|
---|
| 807 |
|
---|
| 808 |
|
---|
| 809 |
|
---|
| 810 |
|
---|
| 811 | /**
|
---|
| 812 | * Copy a file from the opened stream (CD or tape) to @p outfile.
|
---|
| 813 | * @param bkpinfo The backup information structure. @c bkpinfo->media_device is the only field used.
|
---|
| 814 | * @param outfile The file to write to.
|
---|
| 815 | * @param size The size of the file in the input stream.
|
---|
| 816 | * @return 0 for success, nonzero for failure.
|
---|
| 817 | */
|
---|
| 818 | int
|
---|
| 819 | read_file_from_stream_to_file (struct s_bkpinfo *bkpinfo, char *outfile,
|
---|
| 820 | long long size)
|
---|
| 821 | {
|
---|
| 822 |
|
---|
| 823 | /*@ int *********************************************************/
|
---|
| 824 | int res;
|
---|
| 825 |
|
---|
| 826 | /*@ end vars ****************************************************/
|
---|
| 827 |
|
---|
| 828 | res = read_file_from_stream_FULL (bkpinfo, outfile, NULL, size);
|
---|
| 829 |
|
---|
| 830 | return (res);
|
---|
| 831 | }
|
---|
| 832 |
|
---|
| 833 |
|
---|
| 834 |
|
---|
| 835 | /**
|
---|
| 836 | * Copy a file from the currently opened stream (CD or tape) to the stream indicated
|
---|
| 837 | * by @p fout.
|
---|
| 838 | * @param bkpinfo The backup information structure. @c bkpinfo->media_size is the only field used.
|
---|
| 839 | * @param fout The stream to write the file to.
|
---|
| 840 | * @param size The size of the file in bytes.
|
---|
| 841 | * @return 0 for success, nonzero for failure.
|
---|
| 842 | */
|
---|
| 843 | int
|
---|
| 844 | read_file_from_stream_to_stream (struct s_bkpinfo *bkpinfo, FILE * fout,
|
---|
| 845 | long long size)
|
---|
| 846 | {
|
---|
| 847 |
|
---|
| 848 | /*@ int *********************************************************/
|
---|
| 849 | int res;
|
---|
| 850 |
|
---|
| 851 | /*@ end vars ****************************************************/
|
---|
| 852 |
|
---|
| 853 | res = read_file_from_stream_FULL (bkpinfo, NULL, fout, size);
|
---|
| 854 | /* fflush(g_tape_stream);
|
---|
| 855 | fflush(fout);*/
|
---|
| 856 | return (res);
|
---|
| 857 | }
|
---|
| 858 |
|
---|
| 859 |
|
---|
| 860 |
|
---|
| 861 | /**
|
---|
| 862 | * Copy a file from the currently opened stream (CD or tape) to either a
|
---|
| 863 | * @c FILE pointer indicating a currently-opened file, or a filename indicating
|
---|
| 864 | * a new file to create. This is the backbone function that read_file_from_stream_to_file()
|
---|
| 865 | * and read_file_from_stream_to_stream() are wrappers for.
|
---|
| 866 | * @param bkpinfo The backup information structure. @c bkpinfo->media_size is the only field used.
|
---|
| 867 | * @param outfname If non-NULL, write to this file.
|
---|
| 868 | * @param foutstream If non-NULL, write to this stream.
|
---|
| 869 | * @param orig_size The original length of the file in bytes.
|
---|
| 870 | * @return 0 for success, nonzero for failure.
|
---|
| 871 | * @note Only @b one of @p outfname or @p foutstream may be non-NULL.
|
---|
| 872 | */
|
---|
| 873 | int
|
---|
| 874 | read_file_from_stream_FULL (struct s_bkpinfo *bkpinfo, char *outfname,
|
---|
| 875 | FILE * foutstream, long long orig_size)
|
---|
| 876 | {
|
---|
| 877 | /*@ buffers ******************************************************/
|
---|
| 878 | char *tmp;
|
---|
| 879 | char *datablock;
|
---|
| 880 | char *temp_fname;
|
---|
| 881 | char *temp_cksum;
|
---|
| 882 | char *actual_cksum;
|
---|
| 883 | // char *pA, *pB;
|
---|
| 884 |
|
---|
| 885 | /*@ int **********************************************************/
|
---|
| 886 | int retval = 0;
|
---|
| 887 | #ifdef EXTRA_TAPE_CHECKSUMS
|
---|
| 888 | int i, ch;
|
---|
| 889 | #endif
|
---|
| 890 | int noof_blocks;
|
---|
| 891 | int ctrl_chr;
|
---|
| 892 | int res;
|
---|
| 893 | /*@ pointers *****************************************************/
|
---|
| 894 | FILE *fout;
|
---|
| 895 |
|
---|
| 896 | /*@ long ******************************************************/
|
---|
| 897 | long bytes_to_write = 0 /*,i */ ;
|
---|
| 898 | // long bytes_successfully_read_in_this_time = 0;
|
---|
| 899 |
|
---|
| 900 | /*@ long long ****************************************************/
|
---|
| 901 | long long temp_size, size;
|
---|
| 902 | long bytes_read, bytes_to_read;
|
---|
| 903 | long long total_read_from_tape_for_this_file = 0;
|
---|
| 904 | long long where_I_was_before_tape_change = 0;
|
---|
| 905 | /*@ unsigned int *************************************************/
|
---|
| 906 | /* unsigned int ch; */
|
---|
| 907 | unsigned int crc16;
|
---|
| 908 | unsigned int crctt;
|
---|
| 909 |
|
---|
| 910 | bool had_to_resync=FALSE;
|
---|
| 911 |
|
---|
| 912 | /*@ init ********************************************************/
|
---|
| 913 | malloc_string(tmp);
|
---|
| 914 | malloc_string(temp_fname);
|
---|
| 915 | malloc_string(temp_cksum);
|
---|
| 916 | malloc_string(actual_cksum);
|
---|
| 917 | datablock = malloc(TAPE_BLOCK_SIZE);
|
---|
| 918 | crc16 = 0;
|
---|
| 919 | crctt = 0;
|
---|
| 920 | size = orig_size;
|
---|
| 921 |
|
---|
| 922 | /*@ end vars ****************************************************/
|
---|
| 923 |
|
---|
| 924 | res = read_header_block_from_stream (&temp_size, temp_fname, &ctrl_chr);
|
---|
| 925 | if (orig_size != temp_size && orig_size != -1)
|
---|
| 926 | {
|
---|
| 927 | sprintf (tmp,
|
---|
| 928 | "output file's size should be %ld K but is apparently %ld K",
|
---|
| 929 | (long) size >> 10, (long) temp_size >> 10);
|
---|
| 930 | log_to_screen (tmp);
|
---|
| 931 | }
|
---|
| 932 | if (ctrl_chr != BLK_START_FILE)
|
---|
| 933 | {
|
---|
| 934 | wrong_marker (BLK_START_FILE, ctrl_chr);
|
---|
| 935 | return(1);
|
---|
| 936 | }
|
---|
| 937 | sprintf (tmp, "Reading file from tape; writing to '%s'; %ld KB", outfname,
|
---|
| 938 | (long) size >> 10);
|
---|
| 939 |
|
---|
| 940 | if (foutstream) { fout = foutstream; }
|
---|
| 941 | else { fout = fopen (outfname, "w"); }
|
---|
| 942 | if (!fout)
|
---|
| 943 | {
|
---|
| 944 | log_OS_error (outfname);
|
---|
| 945 | log_to_screen ("Cannot openout file");
|
---|
| 946 | return(1);
|
---|
| 947 | }
|
---|
| 948 | total_read_from_tape_for_this_file = 0;
|
---|
| 949 | for (noof_blocks = 0; size > 0; noof_blocks++, size-=bytes_to_write, total_read_from_tape_for_this_file+=bytes_read)
|
---|
| 950 | {
|
---|
| 951 | bytes_to_write = (size < TAPE_BLOCK_SIZE) ? (long)size : TAPE_BLOCK_SIZE;
|
---|
| 952 | bytes_to_read = TAPE_BLOCK_SIZE;
|
---|
| 953 | bytes_read = fread(datablock, 1, bytes_to_read, g_tape_stream);
|
---|
| 954 | while(bytes_read < bytes_to_read)
|
---|
| 955 | { // next tape!
|
---|
| 956 | // crctt=crc16=0;
|
---|
| 957 | where_I_was_before_tape_change = size;
|
---|
| 958 | log_msg(4, "where_I_was_... = %lld", where_I_was_before_tape_change);
|
---|
| 959 | start_to_read_from_next_tape(bkpinfo);
|
---|
| 960 | log_msg(4, "Started reading from next tape.");
|
---|
| 961 | skip_incoming_files_until_we_find_this_one(temp_fname);
|
---|
| 962 | log_msg(4, "Skipped irrelevant files OK.");
|
---|
| 963 | for(size = orig_size; size > where_I_was_before_tape_change; size-=bytes_to_write)
|
---|
| 964 | {
|
---|
| 965 | bytes_read = fread(datablock, 1, bytes_to_read, g_tape_stream);
|
---|
| 966 | }
|
---|
| 967 | log_msg(4, "'size' is now %lld (should be %lld)", size, where_I_was_before_tape_change);
|
---|
| 968 | log_to_screen("Successfully re-sync'd tape");
|
---|
| 969 | had_to_resync = TRUE;
|
---|
| 970 | bytes_read = fread(datablock, 1, bytes_to_read, g_tape_stream);
|
---|
| 971 | }
|
---|
| 972 |
|
---|
| 973 | (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
|
---|
| 974 |
|
---|
| 975 | #ifdef EXTRA_TAPE_CHECKSUMS
|
---|
| 976 | for(i=0;i<(int)bytes_to_write;i++)
|
---|
| 977 | {
|
---|
| 978 | ch=datablock[i];
|
---|
| 979 | crc16=updcrcr(crc16,(unsigned)ch);
|
---|
| 980 | crctt=updcrc(crctt,(unsigned)ch);
|
---|
| 981 | }
|
---|
| 982 | #endif
|
---|
| 983 | }
|
---|
| 984 | log_msg(6, "Total read from tape for this file = %lld", total_read_from_tape_for_this_file);
|
---|
| 985 | log_msg(6, ".......................... Should be %lld", orig_size);
|
---|
| 986 | g_tape_posK += total_read_from_tape_for_this_file/1024;
|
---|
| 987 | sprintf (actual_cksum, "%04x%04x", crc16, crctt);
|
---|
| 988 | if (foutstream)
|
---|
| 989 | { /*log_it("Finished writing to foutstream"); */
|
---|
| 990 | }
|
---|
| 991 | else
|
---|
| 992 | {
|
---|
| 993 | paranoid_fclose (fout);
|
---|
| 994 | }
|
---|
| 995 | res = read_header_block_from_stream (&temp_size, temp_cksum, &ctrl_chr);
|
---|
| 996 | if (ctrl_chr != BLK_STOP_FILE)
|
---|
| 997 | {
|
---|
| 998 | wrong_marker (BLK_STOP_FILE, ctrl_chr);
|
---|
| 999 | // fatal_error("Bad marker"); // return(1);
|
---|
| 1000 | }
|
---|
| 1001 | if (strcmp (temp_cksum, actual_cksum))
|
---|
| 1002 | {
|
---|
| 1003 | sprintf (tmp, "actual cksum=%s; recorded cksum=%s", actual_cksum,
|
---|
| 1004 | temp_cksum);
|
---|
| 1005 | log_to_screen (tmp);
|
---|
| 1006 | sprintf (tmp, "%s (%ld K) is corrupt on tape", temp_fname,
|
---|
| 1007 | (long) orig_size >> 10);
|
---|
| 1008 | log_to_screen (tmp);
|
---|
| 1009 | retval++;
|
---|
| 1010 | }
|
---|
| 1011 | else
|
---|
| 1012 | {
|
---|
| 1013 | sprintf (tmp, "%s is GOOD on tape", temp_fname);
|
---|
| 1014 | /* log_it(tmp); */
|
---|
| 1015 | }
|
---|
| 1016 | paranoid_free(datablock);
|
---|
| 1017 | paranoid_free(tmp);
|
---|
| 1018 | paranoid_free(temp_fname);
|
---|
| 1019 | paranoid_free(temp_cksum);
|
---|
| 1020 | paranoid_free(actual_cksum);
|
---|
| 1021 | return (retval);
|
---|
| 1022 | }
|
---|
| 1023 |
|
---|
| 1024 |
|
---|
| 1025 |
|
---|
| 1026 | /**
|
---|
| 1027 | * Read a header block from the currently opened stream (CD or tape).
|
---|
| 1028 | * This block indicates the length of the following file (if it's file-related)
|
---|
| 1029 | * the filename (if it's file-related), and the block type.
|
---|
| 1030 | * @param plen Where to put the length of the file. Valid only for file-related header blocks.
|
---|
| 1031 | * @param filename Where to put the name of the file. Valid only for file-related header blocks.
|
---|
| 1032 | * @param pcontrol_char Where to put the type of block (e.g. start-file, end-file, start-tape, ...)
|
---|
| 1033 | * @return 0 for success, nonzero for failure.
|
---|
| 1034 | * @note If you read a marker (@p pcontrol_char) you're not expecting, you can call wrong_marker().
|
---|
| 1035 | */
|
---|
| 1036 | int
|
---|
| 1037 | read_header_block_from_stream (long long *plen, char *filename,
|
---|
| 1038 | int *pcontrol_char)
|
---|
| 1039 | {
|
---|
| 1040 |
|
---|
| 1041 | /*@ buffers ******************************************************/
|
---|
| 1042 | char *tempblock;
|
---|
| 1043 |
|
---|
| 1044 | /*@ int **********************************************************/
|
---|
| 1045 | int i, retval;
|
---|
| 1046 |
|
---|
| 1047 | /*@ end vars ****************************************************/
|
---|
| 1048 |
|
---|
| 1049 | tempblock = (char*)malloc((size_t) TAPE_BLOCK_SIZE);
|
---|
| 1050 |
|
---|
| 1051 | for (i = 0; i < (int) TAPE_BLOCK_SIZE; i++)
|
---|
| 1052 | {
|
---|
| 1053 | tempblock[i] = 0;
|
---|
| 1054 | }
|
---|
| 1055 | while(!(*pcontrol_char = tempblock[7000]))
|
---|
| 1056 | {
|
---|
| 1057 | g_tape_posK += fread (tempblock, 1, (size_t) TAPE_BLOCK_SIZE, g_tape_stream) / 1024;
|
---|
| 1058 | }
|
---|
| 1059 | /* memcpy((char*)plength_of_incoming_file,(char*)tempblock+7001,sizeof(long long)); */
|
---|
| 1060 | /* for(*plen=0,i=7;i>=0;i--) {*plen<<=8; *plen |= tempblock[7001+i];} */
|
---|
| 1061 | memcpy ((char *) plen, tempblock + 7001, sizeof (long long));
|
---|
| 1062 | if (strcmp (tempblock + 6000 + *pcontrol_char, "Mondolicious, baby"))
|
---|
| 1063 | {
|
---|
| 1064 | log_it ("Bad header block at %ld K", (long) g_tape_posK);
|
---|
| 1065 | }
|
---|
| 1066 | strcpy (filename, tempblock + 1000);
|
---|
| 1067 | /* strcpy(cksum,tempblock+5555);*/
|
---|
| 1068 | /* log_it( "%s (reading) fname=%s, filesize=%ld K",
|
---|
| 1069 | marker_to_string (*pcontrol_char), filename,
|
---|
| 1070 | (long) ((*plen) >> 10));
|
---|
| 1071 | */
|
---|
| 1072 | if (*pcontrol_char == BLK_ABORTED_BACKUP)
|
---|
| 1073 | {
|
---|
| 1074 | log_to_screen ("I can't verify an aborted backup.");
|
---|
| 1075 | retval=1;
|
---|
| 1076 | }
|
---|
| 1077 | else
|
---|
| 1078 | { retval=0; }
|
---|
| 1079 | for(i=1000; i<1020; i++) { if (tempblock[i]<32 || tempblock[i]>126) { tempblock[i]=' '; } }
|
---|
| 1080 | tempblock[i] = '\0';
|
---|
| 1081 | log_msg(6, "%s (fname=%s, size=%ld K)", marker_to_string (*pcontrol_char),
|
---|
| 1082 | tempblock+1000, (long) (*plen) >> 10);
|
---|
| 1083 | paranoid_free(tempblock);
|
---|
| 1084 | return (retval);
|
---|
| 1085 | }
|
---|
| 1086 |
|
---|
| 1087 |
|
---|
| 1088 |
|
---|
| 1089 | /**
|
---|
| 1090 | * Add specified file/slice to the internal catalog of all archives written.
|
---|
| 1091 | * This lets us restart on a new CD/tape/whatever if it runs out of room. We just
|
---|
| 1092 | * write the last [buffer size] MB from the catalog to the new tape, so we know
|
---|
| 1093 | * we have @e all archives on some CD/tape/whatever.
|
---|
| 1094 | * @param type The type of file we're cataloging (afioball, slice, something else)
|
---|
| 1095 | * @param number The fileset number or biggiefile number.
|
---|
| 1096 | * @param aux The slice number if it's a biggiefile, or any other additional info.
|
---|
| 1097 | * @param fn The original full pathname of the file we're recording.
|
---|
| 1098 | * @return The index of the record we just added.
|
---|
| 1099 | */
|
---|
| 1100 | int register_in_tape_catalog(t_archtype type, int number, long aux, char*fn)
|
---|
| 1101 | {
|
---|
| 1102 | int last;
|
---|
| 1103 | char fname[MAX_TAPECAT_FNAME_LEN];
|
---|
| 1104 | char *p;
|
---|
| 1105 |
|
---|
| 1106 | p = strrchr(fn, '/');
|
---|
| 1107 | if (p) { p++; } else { p = fn; }
|
---|
| 1108 | strncpy(fname, p, MAX_TAPECAT_FNAME_LEN);
|
---|
| 1109 | fname[MAX_TAPECAT_FNAME_LEN] = '\0';
|
---|
| 1110 | last = g_tapecatalog->entries;
|
---|
| 1111 | if (last >= MAX_TAPECATALOG_ENTRIES)
|
---|
| 1112 | {
|
---|
| 1113 | log_it("Warning - can't log #%d in tape catalog - too many entries already", number);
|
---|
| 1114 | return(-1);
|
---|
| 1115 | }
|
---|
| 1116 | g_tapecatalog->el[last].type = type;
|
---|
| 1117 | g_tapecatalog->el[last].number = number;
|
---|
| 1118 | g_tapecatalog->el[last].aux = aux;
|
---|
| 1119 | g_tapecatalog->el[last].tape_posK = g_tape_posK;
|
---|
| 1120 | strcpy(g_tapecatalog->el[last].fname, fname);
|
---|
| 1121 | g_tapecatalog->entries ++;
|
---|
| 1122 | return(last); // returns the index of the record we've jsut added
|
---|
| 1123 | }
|
---|
| 1124 |
|
---|
| 1125 |
|
---|
| 1126 |
|
---|
| 1127 |
|
---|
| 1128 | /**
|
---|
| 1129 | * Decide whether we should start a new tape. This is TRUE if we've run out of tape
|
---|
| 1130 | * (got SIGPIPE) or look like we will.
|
---|
| 1131 | * @param mediasize The size of the tape in megabytes.
|
---|
| 1132 | * @param length_of_incoming_file The length of the file we're about to write, in bytes.
|
---|
| 1133 | * @bug This seems like it'll only work for media_size != autodetect, but Mondo only allows
|
---|
| 1134 | * autodetecting the size. Huh?
|
---|
| 1135 | */
|
---|
| 1136 | bool
|
---|
| 1137 | should_we_write_to_next_tape (long mediasize,
|
---|
| 1138 | long long length_of_incoming_file)
|
---|
| 1139 | {
|
---|
| 1140 | /*@ bool's ******************************************************/
|
---|
| 1141 | bool we_need_a_new_tape = FALSE;
|
---|
| 1142 |
|
---|
| 1143 | /*@ end vars ****************************************************/
|
---|
| 1144 |
|
---|
| 1145 | if (mediasize==0) { return(FALSE); }
|
---|
| 1146 | if (mediasize>0 && (g_tape_posK >> 10 >= mediasize))
|
---|
| 1147 | {
|
---|
| 1148 | log_it("mediasize = %ld", mediasize);
|
---|
| 1149 | we_need_a_new_tape = TRUE;
|
---|
| 1150 | log_to_screen ("Should have started a new tape/CD already");
|
---|
| 1151 | }
|
---|
| 1152 | if ((g_tape_posK + length_of_incoming_file / 1024) >> 10 >= mediasize-(SLICE_SIZE*4/1024))
|
---|
| 1153 | {
|
---|
| 1154 | log_it("g_tape_posK = %ld\nmediasize = %ld\n", g_tape_posK, mediasize);
|
---|
| 1155 | we_need_a_new_tape = TRUE;
|
---|
| 1156 | }
|
---|
| 1157 | return (we_need_a_new_tape);
|
---|
| 1158 | }
|
---|
| 1159 |
|
---|
| 1160 |
|
---|
| 1161 | /**
|
---|
| 1162 | * Seek through the stream until we find a header block where the NAME field matches
|
---|
| 1163 | * @p the_file_I_was_reading. This is useful if you've just started reading from
|
---|
| 1164 | * a new tape and want to find the file you were reading when the tape ended.
|
---|
| 1165 | * @param the_file_I_was_reading File name to look for.
|
---|
| 1166 | * @return 0 for success, nonzero for failure.
|
---|
| 1167 | */
|
---|
| 1168 | int skip_incoming_files_until_we_find_this_one(char*the_file_I_was_reading)
|
---|
| 1169 | {
|
---|
| 1170 | char*pA;
|
---|
| 1171 | char*pB;
|
---|
| 1172 | int res;
|
---|
| 1173 | int ctrl_chr;
|
---|
| 1174 | char *temp_fname;
|
---|
| 1175 | char *datablock;
|
---|
| 1176 | long long temp_size, size;
|
---|
| 1177 | long bytes_to_write;
|
---|
| 1178 |
|
---|
| 1179 | datablock = malloc(TAPE_BLOCK_SIZE);
|
---|
| 1180 | malloc_string(temp_fname);
|
---|
| 1181 | pB = strrchr(the_file_I_was_reading, '/'); if (pB) { pB++; } else { pB = the_file_I_was_reading; }
|
---|
| 1182 | log_msg(1, "skip_incoming_..(%s)", pB);
|
---|
| 1183 | log_msg(2, "Looking for initial START_AN_AFIO_OR_SLICE");
|
---|
| 1184 | ctrl_chr=-1;
|
---|
| 1185 | while(ctrl_chr != BLK_START_AN_AFIO_OR_SLICE)
|
---|
| 1186 | {
|
---|
| 1187 | res=read_header_block_from_stream (&temp_size, temp_fname, &ctrl_chr);
|
---|
| 1188 | if (ctrl_chr == BLK_START_AN_AFIO_OR_SLICE)
|
---|
| 1189 | { break; }
|
---|
| 1190 | log_msg(1, "%lld %s %c", temp_size, temp_fname, ctrl_chr);
|
---|
| 1191 | wrong_marker(BLK_START_AN_AFIO_OR_SLICE, ctrl_chr);
|
---|
| 1192 | log_msg(3, "Still trying to re-sync w/ tape");
|
---|
| 1193 | }
|
---|
| 1194 | while(ctrl_chr != BLK_START_FILE)
|
---|
| 1195 | {
|
---|
| 1196 | res=read_header_block_from_stream (&temp_size, temp_fname, &ctrl_chr);
|
---|
| 1197 | if (ctrl_chr == BLK_START_FILE)
|
---|
| 1198 | { break; }
|
---|
| 1199 | log_msg(1, "%lld %s %c", temp_size, temp_fname, ctrl_chr);
|
---|
| 1200 | wrong_marker(BLK_START_FILE, ctrl_chr);
|
---|
| 1201 | log_msg(3, "Still trying to re-sync w/ tape");
|
---|
| 1202 | }
|
---|
| 1203 | pA = strrchr(temp_fname, '/'); if (pA) { pA++; } else { pA = temp_fname; }
|
---|
| 1204 | pB = strrchr(the_file_I_was_reading, '/'); if (pB) { pB++; } else { pB = the_file_I_was_reading; }
|
---|
| 1205 | while (strcmp(pA, pB))
|
---|
| 1206 | {
|
---|
| 1207 | log_msg(6, "Skipping %s (it's not %s)", temp_fname, the_file_I_was_reading);
|
---|
| 1208 | for(size=temp_size; size>0; size-=bytes_to_write)
|
---|
| 1209 | {
|
---|
| 1210 | bytes_to_write = (size < TAPE_BLOCK_SIZE) ? (long)size : TAPE_BLOCK_SIZE;
|
---|
| 1211 | // FIXME - needs error-checking and -catching
|
---|
| 1212 | fread(datablock,1,(size_t) TAPE_BLOCK_SIZE, g_tape_stream);
|
---|
| 1213 | }
|
---|
| 1214 | res = read_header_block_from_stream (&temp_size, temp_fname, &ctrl_chr);
|
---|
| 1215 | if (ctrl_chr != BLK_STOP_FILE) { wrong_marker (BLK_STOP_FILE, ctrl_chr); }
|
---|
| 1216 | res = read_header_block_from_stream (&temp_size, temp_fname, &ctrl_chr);
|
---|
| 1217 | if (ctrl_chr != BLK_STOP_AN_AFIO_OR_SLICE) { wrong_marker(BLK_STOP_AN_AFIO_OR_SLICE, ctrl_chr); }
|
---|
| 1218 | res = read_header_block_from_stream (&temp_size, temp_fname, &ctrl_chr);
|
---|
| 1219 | if (ctrl_chr != BLK_START_AN_AFIO_OR_SLICE) { wrong_marker(BLK_START_AN_AFIO_OR_SLICE, ctrl_chr); }
|
---|
| 1220 | res = read_header_block_from_stream (&temp_size, temp_fname, &ctrl_chr);
|
---|
| 1221 | if (ctrl_chr != BLK_START_FILE) { wrong_marker(BLK_START_FILE, ctrl_chr); }
|
---|
| 1222 | pA = strrchr(temp_fname, '/'); if (pA) { pA++; } else { pA = temp_fname; }
|
---|
| 1223 | pB = strrchr(the_file_I_was_reading, '/'); if (pB) { pB++; } else { pB = the_file_I_was_reading; }
|
---|
| 1224 | }
|
---|
| 1225 | log_msg(2, "Reading %s (it matches %s)", temp_fname, the_file_I_was_reading);
|
---|
| 1226 | paranoid_free(temp_fname);
|
---|
| 1227 | paranoid_free(datablock);
|
---|
| 1228 | return(0);
|
---|
| 1229 | }
|
---|
| 1230 |
|
---|
| 1231 |
|
---|
| 1232 | /**
|
---|
| 1233 | * Start to read from the next tape. Assumes the user has already inserted it.
|
---|
| 1234 | * @param bkpinfo The backup information structure. @c bkpinfo->media_device is the only field used.
|
---|
| 1235 | * @return 0 for success, nonzero for failure.
|
---|
| 1236 | */
|
---|
| 1237 | int
|
---|
| 1238 | start_to_read_from_next_tape (struct s_bkpinfo *bkpinfo)
|
---|
| 1239 | {
|
---|
| 1240 | /*@ int **********************************************************/
|
---|
| 1241 | int res = 0;
|
---|
| 1242 | char *sz_msg;
|
---|
| 1243 | int ctrlchr;
|
---|
| 1244 | long long temp_size;
|
---|
| 1245 | malloc_string(sz_msg);
|
---|
| 1246 | /*@ end vars ****************************************************/
|
---|
| 1247 |
|
---|
| 1248 | paranoid_pclose(g_tape_stream);
|
---|
| 1249 | system("sync");system("sync");system("sync");
|
---|
| 1250 | log_it ("Next tape requested.");
|
---|
| 1251 | insist_on_this_tape_number(g_current_media_number+1); // will increment it, too
|
---|
| 1252 | log_it ("Opening IN the next tape");
|
---|
| 1253 | if (!(g_tape_stream = open_device_via_buffer(bkpinfo->media_device, 'r', bkpinfo->internal_tape_block_size))) { log_OS_error(g_tape_fifo); log_to_screen ("Cannot openin stream device"); return(1); }
|
---|
| 1254 | g_tape_posK = 0;
|
---|
| 1255 | g_sigpipe = FALSE;
|
---|
| 1256 | res+=read_header_block_from_stream (&temp_size, sz_msg, &ctrlchr); /* just in case */
|
---|
| 1257 | if (ctrlchr != BLK_START_OF_TAPE) { wrong_marker (BLK_START_OF_TAPE, ctrlchr); }
|
---|
| 1258 | res+=read_header_block_from_stream (&temp_size, sz_msg, &ctrlchr); /* just in case */
|
---|
| 1259 | if (ctrlchr != BLK_START_OF_BACKUP) { wrong_marker (BLK_START_OF_BACKUP, ctrlchr); }
|
---|
| 1260 | else { log_msg(3, "Next tape opened OK. Whoopee!"); }
|
---|
| 1261 | paranoid_free(sz_msg);
|
---|
| 1262 | return (res);
|
---|
| 1263 | }
|
---|
| 1264 |
|
---|
| 1265 |
|
---|
| 1266 |
|
---|
| 1267 | /**
|
---|
| 1268 | * Start to write to the next tape. Assume the user has already inserted it.
|
---|
| 1269 | * @param bkpinfo The backup information structure. @c bkpinfo->media_device is the only field used.
|
---|
| 1270 | * @return 0 for success, nonzero for failure.
|
---|
| 1271 | */
|
---|
| 1272 | int
|
---|
| 1273 | start_to_write_to_next_tape (struct s_bkpinfo *bkpinfo)
|
---|
| 1274 | {
|
---|
| 1275 | int res=0;
|
---|
| 1276 | char command[MAX_STR_LEN*2];
|
---|
| 1277 | paranoid_pclose(g_tape_stream);
|
---|
| 1278 | system("sync");system("sync");system("sync");
|
---|
| 1279 | log_it ("New tape requested.");
|
---|
| 1280 | insist_on_this_tape_number(g_current_media_number+1); // will increment g_current_media, too
|
---|
| 1281 | if (g_current_media_number > MAX_NOOF_MEDIA) { res++; log_to_screen("Too many tapes. Man, you need to use nfs!"); }
|
---|
| 1282 | if (bkpinfo->backup_media_type == cdstream)
|
---|
| 1283 | {
|
---|
| 1284 | sprintf (command, "cdrecord -eject dev=%s speed=%d fs=24m -waiti - >> %s 2>> %s", bkpinfo->media_device, bkpinfo->cdrw_speed, MONDO_LOGFILE, MONDO_LOGFILE);
|
---|
| 1285 | log_it ("Opening OUT to next CD with the command");
|
---|
| 1286 | log_it (command);
|
---|
| 1287 | log_it ("Let's see what happens, shall we?");
|
---|
| 1288 | g_tape_stream = popen (command, "w");
|
---|
| 1289 | if (!g_tape_stream)
|
---|
| 1290 | {
|
---|
| 1291 | log_to_screen ("Failed to openout to cdstream (fifo)");
|
---|
| 1292 | return (1);
|
---|
| 1293 | }
|
---|
| 1294 | }
|
---|
| 1295 | else
|
---|
| 1296 | {
|
---|
| 1297 | log_it ("Opening OUT to next tape");
|
---|
| 1298 | if (!(g_tape_stream = open_device_via_buffer(bkpinfo->media_device, 'w', bkpinfo->internal_tape_block_size)))
|
---|
| 1299 | {
|
---|
| 1300 | log_OS_error(g_tape_fifo);
|
---|
| 1301 | log_to_screen ("Cannot openin stream device");
|
---|
| 1302 | return(1);
|
---|
| 1303 | }
|
---|
| 1304 | }
|
---|
| 1305 | g_tape_posK = 0;
|
---|
| 1306 | g_sigpipe = FALSE;
|
---|
| 1307 | res+=write_header_block_to_stream (0, "start-of-tape", BLK_START_OF_TAPE); /* just in case */
|
---|
| 1308 | res+=write_header_block_to_stream (0, "start-of-backup", BLK_START_OF_BACKUP); /* just in case */
|
---|
| 1309 | return (res);
|
---|
| 1310 | }
|
---|
| 1311 |
|
---|
| 1312 |
|
---|
| 1313 |
|
---|
| 1314 |
|
---|
| 1315 | /**
|
---|
| 1316 | * Write a bufferfull of the most recent archives to the tape. The
|
---|
| 1317 | * rationale behind this is a bit complex. If the previous tape ended
|
---|
| 1318 | * suddenly (EOF or otherwise) some archives were probably left in the
|
---|
| 1319 | * buffer. That means that Mondo thinks they have been written, but
|
---|
| 1320 | * the external binary @c buffer has not actually written them. So to
|
---|
| 1321 | * be safe, we start the new tape by writing the last bufferfull from
|
---|
| 1322 | * the old one. This insures that all archives will be on at least
|
---|
| 1323 | * one tape. Sounds inelegant, but it works.
|
---|
| 1324 | * @param bkpinfo The backup information structure. @c bkpinfo->tmpdir is the only field used.
|
---|
| 1325 | * @return 0 for success, nonzero for failure.
|
---|
| 1326 | */
|
---|
| 1327 | int write_backcatalog_to_tape (struct s_bkpinfo *bkpinfo)
|
---|
| 1328 | {
|
---|
| 1329 | int i, last, res=0;
|
---|
| 1330 | char *fname;
|
---|
| 1331 |
|
---|
| 1332 | log_msg(2, "I am now writing back catalog to tape");
|
---|
| 1333 | malloc_string(fname);
|
---|
| 1334 | last = g_tapecatalog->entries-1;
|
---|
| 1335 | for(i=0; i<=last; i++)
|
---|
| 1336 | {
|
---|
| 1337 | sprintf(fname, "%s/tmpfs/backcatalog/%s", bkpinfo->tmpdir, g_tapecatalog->el[i].fname);
|
---|
| 1338 | if (!does_file_exist(fname))
|
---|
| 1339 | { log_msg(6, "Can't write %s - it doesn't exist.", fname); }
|
---|
| 1340 | else
|
---|
| 1341 | {
|
---|
| 1342 | write_header_block_to_stream (length_of_file(fname), "start-backcatalog-afio-or-slice", BLK_START_AN_AFIO_OR_SLICE);
|
---|
| 1343 | log_msg(2, "Writing %s", fname);
|
---|
| 1344 | if (write_file_to_stream_from_file(bkpinfo, fname))
|
---|
| 1345 | { res++; log_msg(2, "%s failed", fname); }
|
---|
| 1346 | if (i!=last)
|
---|
| 1347 | { write_header_block_to_stream (0, "stop-backcatalog-afio-or-slice", BLK_STOP_AN_AFIO_OR_SLICE); }
|
---|
| 1348 | }
|
---|
| 1349 | }
|
---|
| 1350 | paranoid_free(fname);
|
---|
| 1351 | log_msg(2, "Finished writing back catalog to tape");
|
---|
| 1352 | return(res);
|
---|
| 1353 | }
|
---|
| 1354 |
|
---|
| 1355 |
|
---|
| 1356 |
|
---|
| 1357 | /**
|
---|
| 1358 | * Write all.tar.gz (produced by Mindi) to the first 32M of the first tape.
|
---|
| 1359 | * @param fname The path to all.tar.gz.
|
---|
| 1360 | * @return 0 for success, nonzero for failure.
|
---|
| 1361 | */
|
---|
| 1362 | int
|
---|
| 1363 | write_data_disks_to_stream (char *fname)
|
---|
| 1364 | {
|
---|
| 1365 | /*@ pointers ****************************************************/
|
---|
| 1366 | FILE *fin;
|
---|
| 1367 | char tmp[MAX_STR_LEN];
|
---|
| 1368 |
|
---|
| 1369 | /*@ long ********************************************************/
|
---|
| 1370 | long m = -1;
|
---|
| 1371 | long templong;
|
---|
| 1372 |
|
---|
| 1373 | /*@ int *********************************************************/
|
---|
| 1374 | int i,j;
|
---|
| 1375 |
|
---|
| 1376 | /*@ buffers *****************************************************/
|
---|
| 1377 | char tempblock[256 * 1024];
|
---|
| 1378 |
|
---|
| 1379 | /*@ end vars ****************************************************/
|
---|
| 1380 |
|
---|
| 1381 | open_evalcall_form ("Writing data disks to tape");
|
---|
| 1382 | log_to_screen ("Writing data disks to tape");
|
---|
| 1383 | log_it ("Data disks = %s", fname);
|
---|
| 1384 | if (!does_file_exist (fname))
|
---|
| 1385 | {
|
---|
| 1386 | sprintf (tmp, "Cannot find %s", fname);
|
---|
| 1387 | log_to_screen (tmp);
|
---|
| 1388 | return(1);
|
---|
| 1389 | }
|
---|
| 1390 | if (!(fin = fopen (fname, "r")))
|
---|
| 1391 | {
|
---|
| 1392 | log_OS_error (fname);
|
---|
| 1393 | fatal_error ("Cannot openin the data disk");
|
---|
| 1394 | }
|
---|
| 1395 | for (i = 0; i < 32; i++) /* 32MB */
|
---|
| 1396 | {
|
---|
| 1397 | for (j = 0; j < 4; j++) /* 256K x 4 = 1MB (1024K) */
|
---|
| 1398 | {
|
---|
| 1399 | if (!feof (fin))
|
---|
| 1400 | {
|
---|
| 1401 | m = (long) fread (tempblock, 1, 256 * 1024, fin);
|
---|
| 1402 | }
|
---|
| 1403 | else
|
---|
| 1404 | {
|
---|
| 1405 | m = 0;
|
---|
| 1406 | }
|
---|
| 1407 | for (; m < 256 * 1024; m++)
|
---|
| 1408 | {
|
---|
| 1409 | tempblock[m] = '\0';
|
---|
| 1410 | }
|
---|
| 1411 | g_tape_posK +=
|
---|
| 1412 | fwrite (tempblock, 1, 256 * 1024, g_tape_stream) / 1024;
|
---|
| 1413 | }
|
---|
| 1414 | if (i>g_tape_buffer_size_MB) // otherwise, 'buffer' distorts calculations
|
---|
| 1415 | {
|
---|
| 1416 | templong = ((i-8) * 4 + j) * 100 / (128-8*4);
|
---|
| 1417 | update_evalcall_form ((int)(templong));
|
---|
| 1418 | }
|
---|
| 1419 | }
|
---|
| 1420 | paranoid_fclose (fin);
|
---|
| 1421 | close_evalcall_form ();
|
---|
| 1422 | return (0);
|
---|
| 1423 | }
|
---|
| 1424 |
|
---|
| 1425 |
|
---|
| 1426 |
|
---|
| 1427 |
|
---|
| 1428 | /**
|
---|
| 1429 | * Copy @p infile to the opened stream (CD or tape).
|
---|
| 1430 | * @param bkpinfo The backup information structure. @c bkpinfo->media_size is the only field used.
|
---|
| 1431 | * @param infile The file to write to the stream.
|
---|
| 1432 | * @return 0 for success, nonzero for failure.
|
---|
| 1433 | */
|
---|
| 1434 | int
|
---|
| 1435 | write_file_to_stream_from_file (struct s_bkpinfo *bkpinfo, char *infile)
|
---|
| 1436 | {
|
---|
| 1437 | /*@ buffers *****************************************************/
|
---|
| 1438 | char tmp[MAX_STR_LEN];
|
---|
| 1439 | char datablock[TAPE_BLOCK_SIZE];
|
---|
| 1440 | char checksum[MAX_STR_LEN];
|
---|
| 1441 | char *infile_basename;
|
---|
| 1442 |
|
---|
| 1443 | /*@ int *********************************************************/
|
---|
| 1444 | int retval = 0;
|
---|
| 1445 | int noof_blocks;
|
---|
| 1446 |
|
---|
| 1447 | /* unsigned int ch; */
|
---|
| 1448 | unsigned int crc16;
|
---|
| 1449 | unsigned int crctt;
|
---|
| 1450 |
|
---|
| 1451 | /*@ pointers ****************************************************/
|
---|
| 1452 | FILE *fin;
|
---|
| 1453 | char *p;
|
---|
| 1454 |
|
---|
| 1455 | /*@ long ********************************************************/
|
---|
| 1456 | long bytes_to_read = 0;
|
---|
| 1457 | long i;
|
---|
| 1458 |
|
---|
| 1459 | /*@ long long ***************************************************/
|
---|
| 1460 | long long filesize;
|
---|
| 1461 |
|
---|
| 1462 | #ifdef EXTRA_TAPE_CHECKSUMS
|
---|
| 1463 | int ch;
|
---|
| 1464 | #endif
|
---|
| 1465 |
|
---|
| 1466 | /*@ initialize *************************************************/
|
---|
| 1467 | crc16 = 0;
|
---|
| 1468 | crctt = 0;
|
---|
| 1469 |
|
---|
| 1470 |
|
---|
| 1471 |
|
---|
| 1472 | /*@ end vars ****************************************************/
|
---|
| 1473 |
|
---|
| 1474 | infile_basename = strrchr(infile, '/');
|
---|
| 1475 | if (infile_basename) { infile_basename++; } else { infile_basename=infile; }
|
---|
| 1476 | filesize = length_of_file (infile);
|
---|
| 1477 | if (should_we_write_to_next_tape (bkpinfo->media_size[g_current_media_number], filesize))
|
---|
| 1478 | {
|
---|
| 1479 | start_to_write_to_next_tape (bkpinfo);
|
---|
| 1480 | write_backcatalog_to_tape (bkpinfo);
|
---|
| 1481 | }
|
---|
| 1482 | p = strrchr (infile, '/');
|
---|
| 1483 | if (!p)
|
---|
| 1484 | {
|
---|
| 1485 | p = infile;
|
---|
| 1486 | }
|
---|
| 1487 | else
|
---|
| 1488 | {
|
---|
| 1489 | p++;
|
---|
| 1490 | }
|
---|
| 1491 | sprintf (tmp, "Writing file '%s' to tape (%ld KB)", p,
|
---|
| 1492 | (long) filesize >> 10);
|
---|
| 1493 | log_it (tmp);
|
---|
| 1494 | write_header_block_to_stream (filesize, infile_basename, BLK_START_FILE);
|
---|
| 1495 | //go_here_to_restart_saving_of_file:
|
---|
| 1496 | if (!(fin = fopen (infile, "r"))) { log_OS_error(infile); return(1); }
|
---|
| 1497 | for (noof_blocks = 0; filesize > 0;
|
---|
| 1498 | noof_blocks++, filesize -= bytes_to_read)
|
---|
| 1499 | {
|
---|
| 1500 | if (filesize < TAPE_BLOCK_SIZE)
|
---|
| 1501 | {
|
---|
| 1502 | bytes_to_read = (long) filesize;
|
---|
| 1503 | for (i = 0; i < TAPE_BLOCK_SIZE; i++)
|
---|
| 1504 | {
|
---|
| 1505 | datablock[i] = '\0';
|
---|
| 1506 | }
|
---|
| 1507 | }
|
---|
| 1508 | else
|
---|
| 1509 | {
|
---|
| 1510 | bytes_to_read = TAPE_BLOCK_SIZE;
|
---|
| 1511 | }
|
---|
| 1512 | (void) fread (datablock, 1, (size_t) bytes_to_read, fin);
|
---|
| 1513 | g_tape_posK += fwrite (datablock, 1, /*bytes_to_read */ (size_t) TAPE_BLOCK_SIZE,
|
---|
| 1514 | g_tape_stream) / 1024;
|
---|
| 1515 | if (g_sigpipe)
|
---|
| 1516 | {
|
---|
| 1517 | iamhere("Sigpipe occurred recently. I'll start a new tape.");
|
---|
| 1518 | fclose(fin);
|
---|
| 1519 | g_sigpipe = FALSE;
|
---|
| 1520 | start_to_write_to_next_tape (bkpinfo);
|
---|
| 1521 | write_backcatalog_to_tape (bkpinfo); // kinda-sorta recursive :)
|
---|
| 1522 | return(0);
|
---|
| 1523 | }
|
---|
| 1524 | #ifdef EXTRA_TAPE_CHECKSUMS
|
---|
| 1525 | for(i=0;i<bytes_to_read;i++)
|
---|
| 1526 | {
|
---|
| 1527 | ch=datablock[i];
|
---|
| 1528 | crc16=updcrcr(crc16,(unsigned)ch);
|
---|
| 1529 | crctt=updcrc(crctt,(unsigned)ch);
|
---|
| 1530 | }
|
---|
| 1531 | #endif
|
---|
| 1532 | }
|
---|
| 1533 | paranoid_fclose (fin);
|
---|
| 1534 | sprintf (checksum, "%04x%04x", crc16, crctt);
|
---|
| 1535 | write_header_block_to_stream (g_current_media_number, checksum,
|
---|
| 1536 | BLK_STOP_FILE);
|
---|
| 1537 | // log_it("File '%s' written to tape.", infile);
|
---|
| 1538 | return (retval);
|
---|
| 1539 | }
|
---|
| 1540 |
|
---|
| 1541 |
|
---|
| 1542 |
|
---|
| 1543 |
|
---|
| 1544 |
|
---|
| 1545 | /**
|
---|
| 1546 | * Write a header block to the opened stream (CD or tape).
|
---|
| 1547 | * @param length_of_incoming_file The length to store in the header block.
|
---|
| 1548 | * Usually matters only if this is a file-related header, in which case it should
|
---|
| 1549 | * be the length of the file that will follow.
|
---|
| 1550 | * @param filename The filename to store in the header block. Usually matters
|
---|
| 1551 | * only if this is a file-related header, in which case this should be the name
|
---|
| 1552 | * if the file that will follow.
|
---|
| 1553 | * @param control_char The type of header block this is (start-file, end-file, start-tape, ...)
|
---|
| 1554 | * @return 0 for success, nonzero for failure.
|
---|
| 1555 | */
|
---|
| 1556 | int
|
---|
| 1557 | write_header_block_to_stream (long long length_of_incoming_file, char *filename,
|
---|
| 1558 | int control_char)
|
---|
| 1559 | {
|
---|
| 1560 | /*@ buffers *****************************************************/
|
---|
| 1561 | char tempblock[TAPE_BLOCK_SIZE];
|
---|
| 1562 | char tmp[MAX_STR_LEN];
|
---|
| 1563 | char *p;
|
---|
| 1564 |
|
---|
| 1565 | /*@ int *********************************************************/
|
---|
| 1566 | int i;
|
---|
| 1567 |
|
---|
| 1568 | /*@ long long ***************************************************/
|
---|
| 1569 | long long olen;
|
---|
| 1570 |
|
---|
| 1571 | /*@ end vars ****************************************************/
|
---|
| 1572 |
|
---|
| 1573 |
|
---|
| 1574 | olen = length_of_incoming_file;
|
---|
| 1575 | p = strrchr (filename, '/'); /* Make 'em go, "Unnnh!" Oh wait, that was _Master_ P... */
|
---|
| 1576 | if (!p)
|
---|
| 1577 | {
|
---|
| 1578 | p = filename;
|
---|
| 1579 | }
|
---|
| 1580 | else
|
---|
| 1581 | {
|
---|
| 1582 | p++;
|
---|
| 1583 | }
|
---|
| 1584 | if (!g_tape_stream)
|
---|
| 1585 | {
|
---|
| 1586 | log_to_screen
|
---|
| 1587 | ("You're not backing up to tape. Why write a tape header?");
|
---|
| 1588 | return(1);
|
---|
| 1589 | }
|
---|
| 1590 | for (i = 0; i < (int) TAPE_BLOCK_SIZE; i++)
|
---|
| 1591 | {
|
---|
| 1592 | tempblock[i] = 0;
|
---|
| 1593 | }
|
---|
| 1594 | sprintf (tempblock + 6000 + control_char, "Mondolicious, baby");
|
---|
| 1595 | tempblock[7000] = control_char;
|
---|
| 1596 | /* for(i=0;i<8;i++) {tempblock[7001+i]=olen&0xff; olen>>=8;} */
|
---|
| 1597 | memcpy (tempblock + 7001, (char *) &olen, sizeof (long long));
|
---|
| 1598 | /* if (length_of_incoming_file) {memcpy(tempblock+7001,(char*)&length_of_incoming_file,sizeof(long long));} */
|
---|
| 1599 | strcpy (tempblock + 1000, filename);
|
---|
| 1600 | /* strcpy(tempblock+5555,cksum); */
|
---|
| 1601 | g_tape_posK += fwrite (tempblock, 1, (size_t) TAPE_BLOCK_SIZE, g_tape_stream) / 1024;
|
---|
| 1602 | sprintf (tmp, "%s (fname=%s, size=%ld K)", marker_to_string (control_char),
|
---|
| 1603 | p, (long) length_of_incoming_file >> 10);
|
---|
| 1604 | log_msg(6, tmp);
|
---|
| 1605 | /* log_tape_pos(); */
|
---|
| 1606 | return (0);
|
---|
| 1607 | }
|
---|
| 1608 |
|
---|
| 1609 |
|
---|
| 1610 |
|
---|
| 1611 |
|
---|
| 1612 |
|
---|
| 1613 |
|
---|
| 1614 |
|
---|
| 1615 |
|
---|
| 1616 |
|
---|
| 1617 |
|
---|
| 1618 | /**
|
---|
| 1619 | * Log (to screen) an erroneous marker, along with what it should have been.
|
---|
| 1620 | * @param should_be What we were expecting.
|
---|
| 1621 | * @param it_is What we got.
|
---|
| 1622 | */
|
---|
| 1623 | void
|
---|
| 1624 | wrong_marker (int should_be, int it_is)
|
---|
| 1625 | {
|
---|
| 1626 | /*@ buffer ******************************************************/
|
---|
| 1627 | char tmp[MAX_STR_LEN];
|
---|
| 1628 |
|
---|
| 1629 |
|
---|
| 1630 | /*@ end vars ****************************************************/
|
---|
| 1631 | sprintf (tmp, "Wrong marker! (Should be %s, ",
|
---|
| 1632 | marker_to_string (should_be));
|
---|
| 1633 | sprintf (tmp + strlen (tmp), "is actually %s)", marker_to_string (it_is));
|
---|
| 1634 | log_to_screen (tmp);
|
---|
| 1635 | }
|
---|
| 1636 |
|
---|
| 1637 | /* @} - end of streamGroup */
|
---|