/*
* Collect up the data into tape record sized buffers and output them.
*/
void
ufs2_blksout(daddr_t *blkp, int frags, ino_t ino)
{
daddr_t *bp;
int i, j, count, blks, tbperdb;
blks = howmany(frags * sblock->fs_fsize, TP_BSIZE);
tbperdb = sblock->fs_bsize >> tp_bshift;
for (i = 0; i < blks; i += TP_NINDIR) {
if (i + TP_NINDIR > blks)
count = blks;
else
count = i + TP_NINDIR;
for (j = i; j < count; j++)
if (blkp[j / tbperdb] != 0)
spcl.c_addr[j - i] = 1;
else
spcl.c_addr[j - i] = 0;
spcl.c_count = count - i;
writeheader(ino);
bp = &blkp[i / tbperdb];
for (j = i; j < count; j += tbperdb, bp++)
if (*bp != 0) {
if (j + tbperdb <= count)
dumpblock(*bp, (int)sblock->fs_bsize);
else
dumpblock(*bp, (count - j) * TP_BSIZE);
}
spcl.c_type = TS_ADDR;
}
}
/*
* Dump the extended attribute data. If there was room in the file
* header, then all we need to do is output the data blocks. If there
* was not room in the file header, then an additional TS_ADDR header
* is created to hold the attribute data.
*/
static void
writeextdata(union dinode *dp, ino_t ino, int added)
{
int i, frags, blks, tbperdb, last;
ufs2_daddr_t *bp;
off_t size;
/*
* If no extended attributes, there is nothing to do.
*/
if (spcl.c_extsize == 0)
return;
/*
* If there was no room in the file block for the attributes,
* dump them out in a new block, otherwise just dump the data.
*/
if (added == 0) {
if (spcl.c_extsize > NXADDR * sblock->fs_bsize) {
frags = NXADDR * sblock->fs_frag;
last = 0;
} else {
frags = howmany(spcl.c_extsize, sblock->fs_fsize);
last = 1;
}
ufs2_blksout(dp, &dp->dp2.di_extb[0], frags, ino, last);
} else {
if (spcl.c_extsize > NXADDR * sblock->fs_bsize)
blks = howmany(NXADDR * sblock->fs_bsize, TP_BSIZE);
else
blks = howmany(spcl.c_extsize, TP_BSIZE);
tbperdb = sblock->fs_bsize >> tp_bshift;
for (i = 0; i < blks; i += tbperdb) {
bp = &dp->dp2.di_extb[i / tbperdb];
if (*bp != 0) {
if (i + tbperdb <= blks)
dumpblock(*bp, (int)sblock->fs_bsize);
else
dumpblock(*bp, (blks - i) * TP_BSIZE);
}
}
}
/*
* If an indirect block is added for extended attributes, then
* di_exti below should be changed to the structure element
* that references the extended attribute indirect block. This
* definition is here only to make it compile without complaint.
*/
#define di_exti di_spare[0]
/*
* If the extended attributes fall into an indirect block,
* dump it as well.
*/
if ((size = spcl.c_extsize - NXADDR * sblock->fs_bsize) > 0)
dmpindir(dp, ino, dp->dp2.di_exti, 0, &size);
}
/*
* Collect up the data into tape record sized buffers and output them.
*/
static void
ufs2_blksout(union dinode *dp, ufs2_daddr_t *blkp, int frags, ino_t ino,
int last)
{
ufs2_daddr_t *bp;
int i, j, count, resid, blks, tbperdb, added;
static int writingextdata = 0;
/*
* Calculate the number of TP_BSIZE blocks to be dumped.
* For filesystems with a fragment size bigger than TP_BSIZE,
* only part of the final fragment may need to be dumped.
*/
blks = howmany(frags * sblock->fs_fsize, TP_BSIZE);
if (last) {
resid = howmany(fragoff(sblock, dp->dp2.di_size), TP_BSIZE);
if (resid > 0)
blks -= howmany(sblock->fs_fsize, TP_BSIZE) - resid;
}
tbperdb = sblock->fs_bsize >> tp_bshift;
for (i = 0; i < blks; i += TP_NINDIR) {
if (i + TP_NINDIR > blks)
count = blks;
else
count = i + TP_NINDIR;
for (j = i; j < count; j++)
if (blkp[j / tbperdb] != 0)
spcl.c_addr[j - i] = 1;
else
spcl.c_addr[j - i] = 0;
spcl.c_count = count - i;
if (last && count == blks && !writingextdata)
added = appendextdata(dp);
writeheader(ino);
bp = &blkp[i / tbperdb];
for (j = i; j < count; j += tbperdb, bp++)
if (*bp != 0) {
if (j + tbperdb <= count)
dumpblock(*bp, (int)sblock->fs_bsize);
else
dumpblock(*bp, (count - j) * TP_BSIZE);
}
spcl.c_type = TS_ADDR;
spcl.c_count = 0;
if (last && count == blks && !writingextdata) {
writingextdata = 1;
writeextdata(dp, ino, added);
writingextdata = 0;
}
}
}
/*
* process to copy dump blocks from
* cache to worm. it runs flat out when
* it gets work, but only looks for
* work every 10 seconds.
*/
void
wormcopy(void *)
{
int f, dorecalc = 1;
Timet dt, t = 0, nddate = 0, ntoytime = 0;
Filsys *fs;
for (;;) {
if (dorecalc) {
dorecalc = 0;
t = time(nil);
nddate = nextdump(t); /* chatters */
ntoytime = time(nil);
}
dt = time(nil) - t;
if(dt < 0 || dt > MINUTE(100)) {
if(dt < 0)
print("time went back\n");
else
print("time jumped ahead\n");
dorecalc = 1;
continue;
}
t += dt;
f = 0;
if(t > ntoytime)
ntoytime = time(nil) + HOUR(1);
else if(t > nddate) {
if(!conf.nodump) {
print("automatic dump %T\n", t);
for(fs=filsys; fs->name; fs++)
if(fs->dev->type == Devcw)
cfsdump(fs);
}
dorecalc = 1;
} else {
rlock(&mainlock);
for(fs=filsys; fs->name; fs++)
if(fs->dev->type == Devcw)
f |= dumpblock(fs->dev);
runlock(&mainlock);
if(!f)
delay(10000);
wormprobe();
}
}
}
static int
readblks(int fd, size_t alignment)
{
__uint64_t offset;
char *buffer, *tmp;
unsigned int xfer, block, i;
int err=0;
if (alloconly)
return 0;
xfer = READ_XFER*blocksize;
if (posix_memalign((void **) &buffer, alignment, xfer)) {
perror("malloc");
exit(1);
}
memset(buffer, 0, xfer);
if (verbose)
printf("\n");
if (lseek64(fd, fileoffset, SEEK_SET) < 0) {
perror("lseek");
exit(1);
}
block = 0;
offset = 0;
while (offset < filesize) {
if ((i = read(fd, buffer, xfer) < xfer)) {
if (i < 2)
break;
perror("read");
exit(1);
}
tmp = buffer;
for (i = 0; i < READ_XFER; i++) {
__uint64_t want;
__uint64_t first;
__uint64_t second;
if (verbose && ((block % 100) == 0)) {
printf("+");
fflush(stdout);
}
want = BITVAL(valid, block) ? offset : 0;
first = *(__uint64_t *) tmp;
second = *(__uint64_t *) (tmp + 256);
if (first != want || second != want) {
printf("mismatched data at offset=0x%" PRIx64
", expected 0x%" PRIx64
", got 0x%" PRIx64
" and 0x%" PRIx64 "\n",
fileoffset + offset, want,
first, second);
err++;
}
if (verbose > 2) {
printf("block %d blocksize %d\n", block,
blocksize);
dumpblock((int *)tmp, fileoffset + offset,
blocksize);
}
block++;
offset += blocksize;
tmp += blocksize;
}
}
if (verbose)
printf("\n");
free(buffer);
return err;
}
