static int
WorkerBee(struct cmd_syndesc *as, void *arock)
{
char *tapedev;
struct tapeLabel *label;
struct fileMark *fmark;
afs_int32 fmtype;
struct blockMark *bmark;
afs_int32 isheader, isdatablock;
char *data;
char *tblock;
afs_int32 code;
struct volumeHeader *volheaderPtr = NULL;
int eod = 1;
int rc;
char *nextblock; /* We cycle through three tape blocks so we */
char *lastblock; /* can trim off the volume trailer from the */
char *lastblock2; /* end of each volume without having to back */
char *tapeblock1; /* up the output stream. */
char *tapeblock2;
char *tapeblock3;
tapedev = as->parms[0].items->data; /* -tape */
nrestore =
(as->parms[1].items ? atol(as->parms[1].items->data) : 0x7fffffff);
nskip = (as->parms[2].items ? atol(as->parms[2].items->data) : 0);
if (as->parms[4].items)
nskip = 0x7fffffff; /* -scan */
outfile = (as->parms[3].items ? as->parms[3].items->data : 0);
ask = (as->parms[5].items ? 0 : 1); /* -noask */
printlabels = (as->parms[6].items ? 1 : 0); /* -label */
printheaders = (as->parms[7].items ? 1 : 0); /* -vheaders */
verbose = (as->parms[8].items ? 1 : 0); /* -verbose */
/* Open the tape device */
rc = usd_Open(tapedev, USD_OPEN_RDONLY, 0, &fd);
if (rc != 0) {
printf("Failed to open tape device %s. Code = %d\n", tapedev, rc);
exit(1);
}
/*
* Initialize the tape block buffers
*/
tapeblock1 = (char *)malloc(3 * 16384);
if (tapeblock1 == NULL) {
printf("Failed to allocate I/O buffers.\n");
exit(1);
}
tapeblock2 = tapeblock1 + 16384;
tapeblock3 = tapeblock2 + 16384;
nextblock = tapeblock1;
lastblock = NULL;
lastblock2 = NULL;
/* Read each tape block deciding what to do with it */
do { /* while ((nskip!=0) && (nrestore!=0)) */
code = readblock(nextblock);
if (code) {
if (!eod)
fprintf(stderr, "Tape device read error: %d\n", code);
break;
}
isdatablock = 0;
/* A data block can be either a volume header, volume trailer,
* or actual data from a dump.
*/
bmark = (struct blockMark *)nextblock;
label = (struct tapeLabel *)nextblock;
fmark = (struct fileMark *)nextblock;
if (ntohl(bmark->magic) == BLOCK_MAGIC) {
if (verbose)
printf("Data block\n");
isdatablock = 1;
isheader = 0;
data = &nextblock[sizeof(struct blockMark)];
if (strncmp(data, "H++NAME#", 8) == 0) {
volheaderPtr = (struct volumeHeader *)data;
printHeader(volheaderPtr, &isheader);
}
if (isheader) {
code = openOutFile(volheaderPtr);
nextblock = tapeblock1;
lastblock = NULL;
lastblock2 = NULL;
} else {
if (lastblock2 != NULL) {
data = &lastblock2[sizeof(struct blockMark)];
bmark = (struct blockMark *)lastblock2;
writeData(data, ntohl(bmark->count));
tblock = lastblock2;
} else if (lastblock != NULL) {
tblock = tapeblock2;
} else {
tblock = tapeblock3;
}
lastblock2 = lastblock;
lastblock = nextblock;
nextblock = tblock;
}
}
/* Filemarks come in 3 forms: BEGIN, END, and EOD.
* There is no information stored in filemarks.
*/
else if (ntohl(fmark->magic) == FILE_MAGIC) {
fmtype = ntohl(fmark->nBytes);
if (fmtype == FILE_BEGIN) {
if (verbose)
fprintf(stderr, "File mark volume begin\n");
} else if (fmtype == FILE_END) {
if (verbose)
fprintf(stderr, "File mark volume end\n");
} else if (fmtype == FILE_EOD) {
if (verbose)
fprintf(stderr, "File mark end-of-dump\n");
eod = 1;
}
}
/* A dump label */
else if (ntohl(label->magic) == TAPE_MAGIC) {
if (verbose)
fprintf(stderr, "Dump label\n");
printLabel(label);
eod = 0;
}
else {
if (verbose) {
fprintf(stderr, "Unrecognized tape block - end\n");
}
}
/* Anything other than a data block closes the out file.
* At this point nextblock contains the end of tape file mark,
* lastblock contains the last data block for the current volume,
* and lastblock2 contains the second to last block for the current
* volume. If the volume fits in a single block, lastblock2 will
* be NULL. Call writeLastBlocks to strip off the dump trailer before
* writing the last of the volume data to the dump file. The dump
* trailer may span block boundaries.
*/
if (!isdatablock && lastblock) {
writeLastBlocks(lastblock, lastblock2);
closeOutFile();
nextblock = tapeblock1;
lastblock = NULL;
lastblock2 = NULL;
}
} while ((nskip != 0) || (nrestore != 0));
free(tapeblock1);
return 0;
}
int
openOutFile(struct volumeHeader *headerPtr)
{
afs_int32 len;
int ch;
int rc;
int oflag;
int skip, first;
afs_hyper_t size;
/* If we were asked to skip this volume, then skip it */
if (nskip) {
nskip--;
return 0;
}
/* Skip if we are not to restore any */
if (!nrestore)
return 0;
/* Get the volume name and strip off the BK or RO extension */
if (outfile) {
strcpy(filename, outfile);
} else {
strcpy(filename, headerPtr->volumeName);
len = strlen(filename);
if ((len > 7) && (strcmp(".backup", filename + len - 7) == 0)) {
filename[len - 7] = 0;
} else if ((len > 9)
&& (strcmp(".readonly", filename + len - 9) == 0)) {
filename[len - 9] = 0;
}
}
if (ask) {
first = 1;
skip = 0;
printf("Press return to retreive volume %s (%u) to file %s; " "s"
" to skip\n", headerPtr->volumeName, headerPtr->volumeID,
filename);
do {
ch = getchar();
if ((first == 1) && (ch == 's'))
skip = 1;
if ((first == 1) && (ch == 'q'))
exit(0);
first = 0;
} while (ch != '\n');
if (skip) {
printf("Will not restore volume %s\n", headerPtr->volumeName);
return 0;
}
} else {
printf("Retrieve volume %s (%u) to file %s\n", headerPtr->volumeName,
headerPtr->volumeID, filename);
}
/* Should I append the date onto the end of the name? */
/* Open the file to write to */
if (headerPtr->contd == TC_VOLCONTD) {
/* Continuation of dump */
oflag = USD_OPEN_RDWR;
} else {
/* An all new dump */
oflag = USD_OPEN_RDWR | USD_OPEN_CREATE;
}
rc = usd_Open(filename, oflag, 0664, &ofd);
if (rc != 0) {
fprintf(stderr, "Unable to open file %s. Skipping. Code = %d\n",
filename, rc);
nrestore--;
return 0;
}
if (headerPtr->contd != TC_VOLCONTD) {
hzero(size);
rc = USD_IOCTL(ofd, USD_IOCTL_SETSIZE, &size);
if (rc != 0) {
fprintf(stderr, "Unable to open file %s. Skipping. Code = %d\n",
filename, rc);
USD_CLOSE(ofd);
nrestore--;
return 0;
}
}
ofdIsOpen = 1;
return 0;
}
static afs_int32
file_Mount(struct butm_tapeInfo *info, char *tape)
{
struct progress *p;
char filename[64];
usd_handle_t fid;
int xflags;
afs_int32 code = 0, error = 0, rc = 0;
if (!info || !tape)
ERROR_EXIT(BUTM_BADARGUMENT);
if (info->debug)
printf("butm: Mount tape drive\n");
POLL();
info->error = 0;
if (info->structVersion != BUTM_MAJORVERSION)
ERROR_EXIT(BUTM_OLDINTERFACE);
if (info->tmRock)
ERROR_EXIT(BUTM_PARALLELMOUNTS);
if (strlen(tape) >= sizeof(info->name))
ERROR_EXIT(BUTM_BADARGUMENT);
strcpy(info->name, tape);
strcpy(filename, config.tapedir); /* the name of the tape device */
info->position = (isafile ? 0 : 1);
info->kBytes = info->nBytes = 0;
info->nRecords = info->nFiles = 0;
info->recordSize = 0;
info->tapeSize = config.tapeSize;
info->coefBytes = 1;
info->coefRecords = 0;
info->coefFiles = sizeof(struct fileMark);
info->simultaneousTapes = 1;
info->status = 0;
info->error = 0;
info->flags = BUTM_FLAGS_SEQUENTIAL;
xflags = 0;
if (isafile) {
xflags |= USD_OPEN_CREATE;
} else {
/*
* try to open in a child process first so nothing will
* time out should the process block because the device
* isn't ready.
*/
if (ForkOpen(filename)) {
ERROR_EXIT(BUTM_MOUNTFAIL);
}
}
/* Now go ahead and open the tape drive for real */
rc = usd_Open(filename, (USD_OPEN_RDWR | USD_OPEN_WLOCK | xflags), 0777,
&fid);
if (rc != 0) { /* try for lesser access */
rc = usd_Open(filename, (USD_OPEN_RDONLY | USD_OPEN_RLOCK), 0, &fid);
if (rc) {
error = rc;
ERROR_EXIT(BUTM_MOUNTFAIL);
}
info->flags |= BUTM_FLAGS_READONLY;
}
(void)PrepareAccess(fid); /* for NT */
p = malloc(sizeof(*p));
info->tmRock = (char *)p;
p->fid = fid;
p->mountId = config.mountId = time(0);
p->reading = p->writing = 0;
TapeBlockSize = BUTM_BLOCKSIZE; /* Initialize */
error_exit:
if (error)
info->error = error;
return (code);
}
static int
ForkOpen(char *device)
{
int rc; /* return code from system calls */
int i; /* loop index */
int pid; /* process ID of child process */
int status; /* exit status of child process */
int open_rc; /* return code from open */
int pipefd[2]; /* pipe for child return status */
int forkflag; /* flag set when ready to fork */
usd_handle_t fd; /* handle returned from open */
#ifdef AFS_PTHREAD_ENV
forkflag = 0; /* No need to fork if using pthreads */
#else
forkflag = 1;
#endif
/* create pipe for getting return code from child */
if (forkflag) {
rc = pipe(pipefd);
if (rc < 0) {
printf("butm: Cannot create pipe for OPEN process. Error %d\n",
errno);
forkflag = 0;
}
}
if (forkflag) {
pid = fork();
if (pid < 0) {
close(pipefd[0]);
close(pipefd[1]);
printf("butm: Cannot create child process for OPEN. Error %d\n",
errno);
forkflag = 0;
}
}
if (!forkflag) { /* problem starting child process */
/*
*return success, the caller will discover any problems
* when it opens the device.
*/
open_rc = 0;
} else if (pid == 0) { /* child process */
/* close all unneccessary file descriptors */
for (i = 3; i < _POSIX_OPEN_MAX; i++) {
if (i != pipefd[1]) {
close(i);
}
}
/* try the open */
open_rc = usd_Open(device, USD_OPEN_RDONLY, 0, &fd);
if (open_rc == 0) {
USD_CLOSE(fd);
}
/*
* Send the return code back to the parent.
* If this fails, there's nothing we can do, but we must test
* it in order to avoid complier warnings on some platforms.
*/
if (write(pipefd[1], &open_rc, sizeof(open_rc)) < 0)
; /* don't care */
exit(0);
} else { /* parent process */
close(pipefd[1]);
POLL();
/* read the result from the child process */
rc = read(pipefd[0], &open_rc, sizeof(open_rc));
if (rc != sizeof(open_rc)) {
/* this is not a problem since we will reopen the device anyway */
printf("butm: No response from OPEN process. Error %d\n", errno);
open_rc = 0;
}
close(pipefd[0]);
/* get the completion status from the child process */
rc = waitpid(pid, &status, 0);
while (rc < 0 && errno == EINTR) {
rc = waitpid(pid, &status, 0);
}
if (rc < 0) {
printf("butm: Cannot get status of OPEN process. Error %d\n",
errno);
} else if (status != 0) {
printf
("butm: Unexpected OPEN process exit status 0x%04x. Error %d \n",
status, errno);
}
SLEEP(1);
}
return (open_rc);
}
int
fileMarkSize(char *tapeDevice)
{
afs_uint32 nFileMarks, nBlocks, nbfTape;
double tpSize, fmSize;
afs_uint32 bufferSize = 16384;
usd_handle_t hTape;
FILE *logFile;
int count = 0;
afs_uint32 countr;
afs_int32 code = 0;
code =
usd_Open(tapeDevice, (USD_OPEN_RDWR | USD_OPEN_WLOCK), 0777, &hTape);
if (code) {
printf("Can't open tape device %s\n", tapeDevice);
fflush(stdout);
exit(1);
}
logFile = fopen("fms.log", "w+");
if (logFile == NULL) {
printf("Can't open log file\n");
fflush(stdout);
exit(1);
}
fprintf(logFile, "fms test started\n");
fflush(logFile);
code = rewindTape(hTape);
if (code) {
fprintf(logFile, "Can't rewind tape\n");
fflush(logFile);
ERROR(code);
}
/* measure capacity of tape */
nbfTape = 0;
countr = 0;
while (1) {
code = dataBlock(hTape, bufferSize);
nbfTape++;
count++;
countr++;
if (code)
break;
if (count >= 5) {
count = 0;
printf("\rwrote block: %d", nbfTape);
}
}
fprintf(logFile, "wrote %d blocks\n", nbfTape);
fflush(logFile);
printf("\rwrote %d blocks\n", nbfTape);
printf("Finished data capacity test - rewinding\n");
/* reset the tape device */
code = USD_CLOSE(hTape);
if (code) {
fprintf(logFile, "Can't close tape device at end of pass 1\n");
fflush(logFile);
printf("Can't close tape device %s\n", tapeDevice);
goto error_exit;
}
code =
usd_Open(tapeDevice, (USD_OPEN_RDWR | USD_OPEN_WLOCK), 0777, &hTape);
if (code) {
fprintf(logFile, "Can't open tape device for pass 2\n");
fflush(logFile);
printf("Can't open tape device %s\n", tapeDevice);
goto error_exit;
}
code = rewindTape(hTape);
if (code) {
fprintf(logFile, "Can't rewind tape\n");
fflush(logFile);
ERROR(code);
}
/* now measure file mark size */
nFileMarks = 0;
nBlocks = 0;
count = 0;
countr = 0;
while (1) {
code = dataBlock(hTape, bufferSize);
nBlocks++;
if (code)
break;
code = fileMark(hTape);
nFileMarks++;
if (code)
break;
count++;
countr++;
if (count >= 2) {
count = 0;
printf("\rwrote %d blocks, %d filemarks", nBlocks, nFileMarks);
}
}
printf("\nFinished filemark test\n");
tpSize = (double)nbfTape *(double)bufferSize;
fmSize =
(((double)nbfTape -
(double)nBlocks) * (double)bufferSize) / (double)nFileMarks;
printf("Tape capacity is %.0f bytes\n", tpSize);
printf("File marks are %.0f bytes\n", fmSize);
fprintf(logFile, "Tape capacity is %.0f bytes\n", tpSize);
fprintf(logFile, "File marks are %.0f bytes\n", fmSize);
fflush(logFile);
fclose(logFile);
error_exit:
USD_CLOSE(hTape);
return (code);
}
