+++ /dev/null
-/*
- * Match Bootstrap Records (used for restores) against
- * Volume Records
- *
- * Kern Sibbald, June MMII
- *
- * Version $Id$
- */
-
-/*
- Copyright (C) 2000-2005 Kern Sibbald
-
- This program is free software; you can redistribute it and/or
- modify it under the terms of the GNU General Public License as
- published by the Free Software Foundation; either version 2 of
- the License, or (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
- You should have received a copy of the GNU General Public
- License along with this program; if not, write to the Free
- Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- MA 02111-1307, USA.
-
- */
-
-#include "bacula.h"
-#include "stored.h"
-#ifdef HAVE_FNMATCH
-#include <fnmatch.h>
-#else
-#include "lib/fnmatch.h"
-#endif
-
-/* Forward references */
-static int match_volume(BSR *bsr, BSR_VOLUME *volume, VOLUME_LABEL *volrec, bool done);
-static int match_sesstime(BSR *bsr, BSR_SESSTIME *sesstime, DEV_RECORD *rec, bool done);
-static int match_sessid(BSR *bsr, BSR_SESSID *sessid, DEV_RECORD *rec);
-static int match_client(BSR *bsr, BSR_CLIENT *client, SESSION_LABEL *sessrec, bool done);
-static int match_job(BSR *bsr, BSR_JOB *job, SESSION_LABEL *sessrec, bool done);
-static int match_job_type(BSR *bsr, BSR_JOBTYPE *job_type, SESSION_LABEL *sessrec, bool done);
-static int match_job_level(BSR *bsr, BSR_JOBLEVEL *job_level, SESSION_LABEL *sessrec, bool done);
-static int match_jobid(BSR *bsr, BSR_JOBID *jobid, SESSION_LABEL *sessrec, bool done);
-static int match_findex(BSR *bsr, BSR_FINDEX *findex, DEV_RECORD *rec, bool done);
-static int match_volfile(BSR *bsr, BSR_VOLFILE *volfile, DEV_RECORD *rec, bool done);
-static int match_stream(BSR *bsr, BSR_STREAM *stream, DEV_RECORD *rec, bool done);
-static int match_all(BSR *bsr, DEV_RECORD *rec, VOLUME_LABEL *volrec, SESSION_LABEL *sessrec, bool done);
-static int match_block_sesstime(BSR *bsr, BSR_SESSTIME *sesstime, DEV_BLOCK *block);
-static int match_block_sessid(BSR *bsr, BSR_SESSID *sessid, DEV_BLOCK *block);
-static BSR *find_smallest_volfile(BSR *fbsr, BSR *bsr);
-
-
-/*********************************************************************
- *
- * If possible, position the archive device (tape) to read the
- * next block.
- */
-void position_bsr_block(BSR *bsr, DEV_BLOCK *block)
-{
- /* To be implemented */
-}
-
-/*********************************************************************
- *
- * Do fast block rejection based on bootstrap records.
- * use_fast_rejection will be set if we have VolSessionId and VolSessTime
- * in each record. When BlockVer is >= 2, we have those in the block header
- * so can do fast rejection.
- *
- * returns: 1 if block may contain valid records
- * 0 if block may be skipped (i.e. it contains no records of
- * that can match the bsr).
- *
- */
-int match_bsr_block(BSR *bsr, DEV_BLOCK *block)
-{
- if (!bsr || !bsr->use_fast_rejection || (block->BlockVer < 2)) {
- return 1; /* cannot fast reject */
- }
-
- for ( ; bsr; bsr=bsr->next) {
- if (!match_block_sesstime(bsr, bsr->sesstime, block)) {
- continue;
- }
- if (!match_block_sessid(bsr, bsr->sessid, block)) {
- continue;
- }
- return 1;
- }
- return 0;
-}
-
-static int match_block_sesstime(BSR *bsr, BSR_SESSTIME *sesstime, DEV_BLOCK *block)
-{
- if (!sesstime) {
- return 1; /* no specification matches all */
- }
- if (sesstime->sesstime == block->VolSessionTime) {
- return 1;
- }
- if (sesstime->next) {
- return match_block_sesstime(bsr, sesstime->next, block);
- }
- return 0;
-}
-
-static int match_block_sessid(BSR *bsr, BSR_SESSID *sessid, DEV_BLOCK *block)
-{
- if (!sessid) {
- return 1; /* no specification matches all */
- }
- if (sessid->sessid <= block->VolSessionId && sessid->sessid2 >= block->VolSessionId) {
- return 1;
- }
- if (sessid->next) {
- return match_block_sessid(bsr, sessid->next, block);
- }
- return 0;
-}
-
-
-/*********************************************************************
- *
- * Match Bootstrap records
- * returns 1 on match
- * returns 0 no match and reposition is set if we should
- * reposition the tape
- * returns -1 no additional matches possible
- */
-int match_bsr(BSR *bsr, DEV_RECORD *rec, VOLUME_LABEL *volrec, SESSION_LABEL *sessrec)
-{
- int stat;
-
- /*
- * The bsr->reposition flag is set any time a bsr is done.
- * In this case, we can probably reposition the
- * tape to the next available bsr position.
- */
- if (bsr) {
- bsr->reposition = false;
- stat = match_all(bsr, rec, volrec, sessrec, true);
- /*
- * Note, bsr->reposition is set by match_all when
- * a bsr is done. We turn it off if a match was
- * found or if we cannot use positioning
- */
- if (stat != 0 || !bsr->use_positioning) {
- bsr->reposition = false;
- }
- } else {
- stat = 1; /* no bsr => match all */
- }
- return stat;
-}
-
-/*
- * Find the next bsr that applies to the current tape.
- * It is the one with the smallest VolFile position.
- */
-BSR *find_next_bsr(BSR *root_bsr, DEVICE *dev)
-{
- BSR *bsr;
- BSR *found_bsr = NULL;
-
- if (!root_bsr || !root_bsr->use_positioning ||
- !root_bsr->reposition || !dev_is_tape(dev)) {
- Dmsg2(100, "No nxt_bsr use_pos=%d repos=%d\n", root_bsr->use_positioning, root_bsr->reposition);
- return NULL;
- }
- Dmsg2(100, "use_pos=%d repos=%d\n", root_bsr->use_positioning, root_bsr->reposition);
- root_bsr->mount_next_volume = false;
- for (bsr=root_bsr; bsr; bsr=bsr->next) {
- if (bsr->done || !match_volume(bsr, bsr->volume, &dev->VolHdr, 1)) {
- continue;
- }
- if (found_bsr == NULL) {
- found_bsr = bsr;
- } else {
- found_bsr = find_smallest_volfile(found_bsr, bsr);
- }
- }
- /*
- * If we get to this point and found no bsr, it means
- * that any additional bsr's must apply to the next
- * tape, so set a flag.
- */
- if (found_bsr == NULL) {
- root_bsr->mount_next_volume = true;
- }
- return found_bsr;
-}
-
-static BSR *find_smallest_volfile(BSR *found_bsr, BSR *bsr)
-{
- BSR *return_bsr = found_bsr;
- BSR_VOLFILE *vf;
- BSR_VOLBLOCK *vb;
- uint32_t found_bsr_sfile, bsr_sfile;
- uint32_t found_bsr_sblock, bsr_sblock;
-
- vf = found_bsr->volfile;
- found_bsr_sfile = vf->sfile;
- while ( (vf=vf->next) ) {
- if (vf->sfile < found_bsr_sfile) {
- found_bsr_sfile = vf->sfile;
- }
- }
- vf = bsr->volfile;
- bsr_sfile = vf->sfile;
- while ( (vf=vf->next) ) {
- if (vf->sfile < bsr_sfile) {
- bsr_sfile = vf->sfile;
- }
- }
- if (found_bsr_sfile > bsr_sfile) {
- return_bsr = bsr;
- } else if (found_bsr_sfile == bsr_sfile) {
- /* Must check block */
- vb = found_bsr->volblock;
- found_bsr_sblock = vb->sblock;
- while ( (vb=vb->next) ) {
- if (vb->sblock < found_bsr_sblock) {
- found_bsr_sblock = vb->sblock;
- }
- }
- vb = bsr->volblock;
- bsr_sblock = vb->sblock;
- while ( (vb=vb->next) ) {
- if (vb->sblock < bsr_sblock) {
- bsr_sblock = vb->sblock;
- }
- }
- if (found_bsr_sblock > bsr_sblock) {
- return_bsr = bsr;
- }
- }
-
- return return_bsr;
-}
-
-/*
- * Called to tell the matcher that the end of
- * the current file has been reached.
- * The bsr argument is not used, but is included
- * for consistency with the other match calls.
- *
- * Returns: true if we should reposition
- * : false otherwise.
- */
-bool match_set_eof(BSR *bsr, DEV_RECORD *rec)
-{
- BSR *rbsr = rec->bsr;
- Dmsg1(100, "match_set %d\n", rbsr != NULL);
- if (!rbsr) {
- return false;
- }
- rec->bsr = NULL;
- rbsr->found++;
- if (rbsr->count && rbsr->found >= rbsr->count) {
- rbsr->done = true;
- rbsr->root->reposition = true;
- Dmsg2(100, "match_set_eof reposition count=%d found=%d\n",
- rbsr->count, rbsr->found);
- return true;
- }
- return false;
-}
-
-/*
- * Match all the components of current record
- * returns 1 on match
- * returns 0 no match
- * returns -1 no additional matches possible
- */
-static int match_all(BSR *bsr, DEV_RECORD *rec, VOLUME_LABEL *volrec,
- SESSION_LABEL *sessrec, bool done)
-{
- if (bsr->done) {
- goto no_match;
- }
- if (!match_volume(bsr, bsr->volume, volrec, 1)) {
- goto no_match;
- }
- if (!match_volfile(bsr, bsr->volfile, rec, 1)) {
- Dmsg2(100, "Fail on file. bsr=%d rec=%d\n", bsr->volfile->efile,
- rec->File);
- goto no_match;
- }
- if (!match_sesstime(bsr, bsr->sesstime, rec, 1)) {
- Dmsg2(100, "Fail on sesstime. bsr=%d rec=%d\n",
- bsr->sesstime->sesstime, rec->VolSessionTime);
- goto no_match;
- }
-
- /* NOTE!! This test MUST come after the sesstime test */
- if (!match_sessid(bsr, bsr->sessid, rec)) {
- Dmsg2(100, "Fail on sessid. bsr=%d rec=%d\n",
- bsr->sessid->sessid, rec->VolSessionId);
- goto no_match;
- }
-
- /* NOTE!! This test MUST come after sesstime and sessid tests */
- if (!match_findex(bsr, bsr->FileIndex, rec, 1)) {
- Dmsg2(100, "Fail on findex. bsr=%d rec=%d\n",
- bsr->FileIndex->findex2, rec->FileIndex);
- goto no_match;
- }
- /*
- * If a count was specified and we have a FileIndex, assume
- * it is a Bacula created bsr (or the equivalent). We
- * then save the bsr where the match occurred so that
- * after processing the record or records, we can update
- * the found count. I.e. rec->bsr points to the bsr that
- * satisfied the match.
- */
- if (bsr->count && bsr->FileIndex) {
- rec->bsr = bsr;
- return 1; /* this is a complete match */
- }
-
- /*
- * The selections below are not used by Bacula's
- * restore command, and don't work because of
- * the rec->bsr = bsr optimization above.
- */
- if (!match_jobid(bsr, bsr->JobId, sessrec, 1)) {
- goto no_match;
-
- }
- if (!match_job(bsr, bsr->job, sessrec, 1)) {
- goto no_match;
- }
- if (!match_client(bsr, bsr->client, sessrec, 1)) {
- goto no_match;
- }
- if (!match_job_type(bsr, bsr->JobType, sessrec, 1)) {
- goto no_match;
- }
- if (!match_job_level(bsr, bsr->JobLevel, sessrec, 1)) {
- goto no_match;
- }
- if (!match_stream(bsr, bsr->stream, rec, 1)) {
- goto no_match;
- }
- return 1;
-
-no_match:
- if (bsr->next) {
- return match_all(bsr->next, rec, volrec, sessrec, bsr->done && done);
- }
- if (bsr->done && done) {
- return -1;
- }
- return 0;
-}
-
-static int match_volume(BSR *bsr, BSR_VOLUME *volume, VOLUME_LABEL *volrec, bool done)
-{
- if (!volume) {
- return 0; /* Volume must match */
- }
- if (strcmp(volume->VolumeName, volrec->VolName) == 0) {
- return 1;
- }
- if (volume->next) {
- return match_volume(bsr, volume->next, volrec, 1);
- }
- return 0;
-}
-
-static int match_client(BSR *bsr, BSR_CLIENT *client, SESSION_LABEL *sessrec, bool done)
-{
- if (!client) {
- return 1; /* no specification matches all */
- }
- if (fnmatch(client->ClientName, sessrec->ClientName, 0) == 0) {
- return 1;
- }
- if (client->next) {
- return match_client(bsr, client->next, sessrec, 1);
- }
- return 0;
-}
-
-static int match_job(BSR *bsr, BSR_JOB *job, SESSION_LABEL *sessrec, bool done)
-{
- if (!job) {
- return 1; /* no specification matches all */
- }
- if (fnmatch(job->Job, sessrec->Job, 0) == 0) {
- return 1;
- }
- if (job->next) {
- return match_job(bsr, job->next, sessrec, 1);
- }
- return 0;
-}
-
-static int match_job_type(BSR *bsr, BSR_JOBTYPE *job_type, SESSION_LABEL *sessrec, bool done)
-{
- if (!job_type) {
- return 1; /* no specification matches all */
- }
- if (job_type->JobType == sessrec->JobType) {
- return 1;
- }
- if (job_type->next) {
- return match_job_type(bsr, job_type->next, sessrec, 1);
- }
- return 0;
-}
-
-static int match_job_level(BSR *bsr, BSR_JOBLEVEL *job_level, SESSION_LABEL *sessrec, bool done)
-{
- if (!job_level) {
- return 1; /* no specification matches all */
- }
- if (job_level->JobLevel == sessrec->JobLevel) {
- return 1;
- }
- if (job_level->next) {
- return match_job_level(bsr, job_level->next, sessrec, 1);
- }
- return 0;
-}
-
-static int match_jobid(BSR *bsr, BSR_JOBID *jobid, SESSION_LABEL *sessrec, bool done)
-{
- if (!jobid) {
- return 1; /* no specification matches all */
- }
- if (jobid->JobId <= sessrec->JobId && jobid->JobId2 >= sessrec->JobId) {
- return 1;
- }
- if (jobid->next) {
- return match_jobid(bsr, jobid->next, sessrec, 1);
- }
- return 0;
-}
-
-static int match_volfile(BSR *bsr, BSR_VOLFILE *volfile, DEV_RECORD *rec, bool done)
-{
- if (!volfile) {
- return 1; /* no specification matches all */
- }
- /* For the moment, these tests work only with tapes. */
- if (!(rec->state & REC_ISTAPE)) {
- return 1; /* All File records OK for this match */
- }
-// Dmsg3(100, "match_volfile: sfile=%d efile=%d recfile=%d\n",
-// volfile->sfile, volfile->efile, rec->File);
- if (volfile->sfile <= rec->File && volfile->efile >= rec->File) {
- return 1;
- }
- /* Once we get past last efile, we are done */
- if (rec->File > volfile->efile) {
- volfile->done = true; /* set local done */
- }
- if (volfile->next) {
- return match_volfile(bsr, volfile->next, rec, volfile->done && done);
- }
-
- /* If we are done and all prior matches are done, this bsr is finished */
- if (volfile->done && done) {
- bsr->done = true;
- bsr->root->reposition = true;
- Dmsg2(100, "bsr done from volfile rec=%d volefile=%d\n",
- rec->File, volfile->efile);
- }
- return 0;
-}
-
-static int match_stream(BSR *bsr, BSR_STREAM *stream, DEV_RECORD *rec, bool done)
-{
- if (!stream) {
- return 1; /* no specification matches all */
- }
- if (stream->stream == rec->Stream) {
- return 1;
- }
- if (stream->next) {
- return match_stream(bsr, stream->next, rec, 1);
- }
- return 0;
-}
-
-static int match_sesstime(BSR *bsr, BSR_SESSTIME *sesstime, DEV_RECORD *rec, bool done)
-{
- if (!sesstime) {
- return 1; /* no specification matches all */
- }
- if (sesstime->sesstime == rec->VolSessionTime) {
- return 1;
- }
- if (rec->VolSessionTime > sesstime->sesstime) {
- sesstime->done = true;
- }
- if (sesstime->next) {
- return match_sesstime(bsr, sesstime->next, rec, sesstime->done && done);
- }
- if (sesstime->done && done) {
- bsr->done = true;
- bsr->root->reposition = true;
- Dmsg0(100, "bsr done from sesstime\n");
- }
- return 0;
-}
-
-static int match_sessid(BSR *bsr, BSR_SESSID *sessid, DEV_RECORD *rec)
-{
- if (!sessid) {
- return 1; /* no specification matches all */
- }
- if (sessid->sessid <= rec->VolSessionId && sessid->sessid2 >= rec->VolSessionId) {
- return 1;
- }
- if (sessid->next) {
- return match_sessid(bsr, sessid->next, rec);
- }
- return 0;
-}
-
-/*
- * When reading the Volume, the Volume Findex (rec->FileIndex) always
- * are found in sequential order. Thus we can make optimizations.
- */
-static int match_findex(BSR *bsr, BSR_FINDEX *findex, DEV_RECORD *rec, bool done)
-{
- if (!findex) {
- return 1; /* no specification matches all */
- }
- if (findex->findex <= rec->FileIndex && findex->findex2 >= rec->FileIndex) {
- return 1;
- }
- if (rec->FileIndex > findex->findex2) {
- findex->done = true;
- }
- if (findex->next) {
- return match_findex(bsr, findex->next, rec, findex->done && done);
- }
- if (findex->done && done) {
- bsr->done = true;
- bsr->root->reposition = true;
- Dmsg1(100, "bsr done from findex %d\n", rec->FileIndex);
- }
- return 0;
-}
projects / bacula / bacula / commitdiff