*/
/*
- Copyright (C) 2002 Kern Sibbald and John Walker
+ Copyright (C) 2000-2004 Kern Sibbald and John Walker
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
*/
-
#include "bacula.h"
#include "stored.h"
#include <fnmatch.h>
/* Forward references */
-static int match_volume(BSR *bsr, BSR_VOLUME *volume, VOLUME_LABEL *volrec, int done);
-static int match_sesstime(BSR *bsr, BSR_SESSTIME *sesstime, DEV_RECORD *rec, int done);
-static int match_sessid(BSR *bsr, BSR_SESSID *sessid, DEV_RECORD *rec, int done);
-static int match_client(BSR *bsr, BSR_CLIENT *client, SESSION_LABEL *sessrec, int done);
-static int match_job(BSR *bsr, BSR_JOB *job, SESSION_LABEL *sessrec, int done);
-static int match_job_type(BSR *bsr, BSR_JOBTYPE *job_type, SESSION_LABEL *sessrec, int done);
-static int match_job_level(BSR *bsr, BSR_JOBLEVEL *job_level, SESSION_LABEL *sessrec, int done);
-static int match_jobid(BSR *bsr, BSR_JOBID *jobid, SESSION_LABEL *sessrec, int done);
-static int match_findex(BSR *bsr, BSR_FINDEX *findex, DEV_RECORD *rec, int done);
-static int match_volfile(BSR *bsr, BSR_VOLFILE *volfile, DEV_RECORD *rec, int done);
-static int match_stream(BSR *bsr, BSR_STREAM *stream, DEV_RECORD *rec, int done);
-static int match_all(BSR *bsr, DEV_RECORD *rec, VOLUME_LABEL *volrec, SESSION_LABEL *sessrec, int done);
+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
+ * 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) {
- stat = match_all(bsr, rec, volrec, sessrec, 1);
+ 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 = 0;
+ stat = 1; /* no bsr => match all */
}
-// Dmsg1(000, "BSR returning %d\n", stat);
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 -1 no additional matches possible
*/
static int match_all(BSR *bsr, DEV_RECORD *rec, VOLUME_LABEL *volrec,
- SESSION_LABEL *sessrec, int done)
+ SESSION_LABEL *sessrec, bool done)
{
if (bsr->done) {
goto no_match;
}
- if (bsr->count && bsr->count <= bsr->found) {
- bsr->done = 1;
- 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, 1)) {
+ 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_stream(bsr, bsr->stream, rec, 1)) {
goto no_match;
}
- bsr->found++;
return 1;
no_match:
return 0;
}
-static int match_volume(BSR *bsr, BSR_VOLUME *volume, VOLUME_LABEL *volrec, int done)
+static int match_volume(BSR *bsr, BSR_VOLUME *volume, VOLUME_LABEL *volrec, bool done)
{
if (!volume) {
return 0; /* Volume must match */
return 0;
}
-static int match_client(BSR *bsr, BSR_CLIENT *client, SESSION_LABEL *sessrec, int done)
+static int match_client(BSR *bsr, BSR_CLIENT *client, SESSION_LABEL *sessrec, bool done)
{
if (!client) {
return 1; /* no specification matches all */
return 0;
}
-static int match_job(BSR *bsr, BSR_JOB *job, SESSION_LABEL *sessrec, int done)
+static int match_job(BSR *bsr, BSR_JOB *job, SESSION_LABEL *sessrec, bool done)
{
if (!job) {
return 1; /* no specification matches all */
return 0;
}
-static int match_job_type(BSR *bsr, BSR_JOBTYPE *job_type, SESSION_LABEL *sessrec, int done)
+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 */
return 0;
}
-static int match_job_level(BSR *bsr, BSR_JOBLEVEL *job_level, SESSION_LABEL *sessrec, int done)
+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 */
return 0;
}
-static int match_jobid(BSR *bsr, BSR_JOBID *jobid, SESSION_LABEL *sessrec, int done)
+static int match_jobid(BSR *bsr, BSR_JOBID *jobid, SESSION_LABEL *sessrec, bool done)
{
if (!jobid) {
return 1; /* no specification matches all */
return 0;
}
-static int match_volfile(BSR *bsr, BSR_VOLFILE *volfile, DEV_RECORD *rec, int done)
+static int match_volfile(BSR *bsr, BSR_VOLFILE *volfile, DEV_RECORD *rec, bool done)
{
if (!volfile) {
return 1; /* no specification matches all */
if (!(rec->state & REC_ISTAPE)) {
return 1; /* All File records OK for this match */
}
-// Dmsg3(000, "match_volfile: sfile=%d efile=%d recfile=%d\n",
+// 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 = 1; /* set local done */
+ 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 = 1;
+ 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, int done)
+static int match_stream(BSR *bsr, BSR_STREAM *stream, DEV_RECORD *rec, bool done)
{
if (!stream) {
return 1; /* no specification matches all */
return 0;
}
-static int match_sesstime(BSR *bsr, BSR_SESSTIME *sesstime, DEV_RECORD *rec, int done)
+static int match_sesstime(BSR *bsr, BSR_SESSTIME *sesstime, DEV_RECORD *rec, bool done)
{
if (!sesstime) {
return 1; /* no specification matches all */
return 1;
}
if (rec->VolSessionTime > sesstime->sesstime) {
- sesstime->done = 1;
+ sesstime->done = true;
}
if (sesstime->next) {
return match_sesstime(bsr, sesstime->next, rec, sesstime->done && done);
}
if (sesstime->done && done) {
- bsr->done = 1;
+ 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, int done)
+static int match_sessid(BSR *bsr, BSR_SESSID *sessid, DEV_RECORD *rec)
{
if (!sessid) {
return 1; /* no specification matches all */
return 1;
}
if (sessid->next) {
- return match_sessid(bsr, sessid->next, rec, sessid->done && done);
- }
- if (sessid->done && done) {
- bsr->done = 1;
+ return match_sessid(bsr, sessid->next, rec);
}
return 0;
}
-static int match_findex(BSR *bsr, BSR_FINDEX *findex, DEV_RECORD *rec, int done)
+/*
+ * 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 */
return 1;
}
if (rec->FileIndex > findex->findex2) {
- findex->done = 1;
+ findex->done = true;
}
if (findex->next) {
return match_findex(bsr, findex->next, rec, findex->done && done);
}
if (findex->done && done) {
- bsr->done = 1;
+ bsr->done = true;
+ bsr->root->reposition = true;
+ Dmsg1(100, "bsr done from findex %d\n", rec->FileIndex);
}
return 0;
}
projects / bacula / bacula / blobdiff