arg_t _ioctl(void)
{
inoptr ino;
uint16_t dev;
if ((ino = getinode(fd)) == NULLINODE)
return -1;
if (!(isdevice(ino))) {
udata.u_error = ENOTTY;
return -1;
}
if ((request & IOCTL_SUPER) && esuper())
return -1;
if (!(getperm(ino) & OTH_WR)) {
udata.u_error = EPERM;
return -1;
}
dev = ino->c_node.i_addr[0];
/* top bit of request is reserved for kernel originated magic */
return d_ioctl(dev, request & 0x7FFF, data);
}
/*
* Backward space a record
*
* Returns: false on failure
* true on success
*/
bool generic_tape_device::bsr(int num)
{
struct mtop mt_com;
int status;
if (!is_open()) {
dev_errno = EBADF;
Mmsg0(errmsg, _("Bad call to bsr_dev. Device not open\n"));
Emsg0(M_FATAL, 0, errmsg);
return false;
}
if (!has_cap(CAP_BSR)) {
Mmsg1(errmsg, _("ioctl MTBSR not permitted on %s.\n"), prt_name);
return false;
}
Dmsg0(100, "bsr_dev\n");
block_num -= num;
clear_eof();
clear_eot();
mt_com.mt_op = MTBSR;
mt_com.mt_count = num;
status = d_ioctl(m_fd, MTIOCTOP, (char *)&mt_com);
if (status < 0) {
berrno be;
clrerror(mt_com.mt_op);
Mmsg2(errmsg, _("ioctl MTBSR error on %s. ERR=%s.\n"), prt_name, be.bstrerror());
}
return status == 0;
}
/*
* Load medium in device
*
* Returns: true on success
* false on failure
*/
bool generic_tape_device::load_dev()
{
#ifdef MTLOAD
struct mtop mt_com;
#endif
if (m_fd < 0) {
dev_errno = EBADF;
Mmsg0(errmsg, _("Bad call to load_dev. Device not open\n"));
Emsg0(M_FATAL, 0, errmsg);
return false;
}
#ifndef MTLOAD
Dmsg0(200, "stored: MTLOAD command not available\n");
berrno be;
dev_errno = ENOTTY; /* function not available */
Mmsg2(errmsg, _("ioctl MTLOAD error on %s. ERR=%s.\n"), prt_name, be.bstrerror());
return false;
#else
block_num = file = 0;
file_size = 0;
file_addr = 0;
mt_com.mt_op = MTLOAD;
mt_com.mt_count = 1;
if (d_ioctl(m_fd, MTIOCTOP, (char *)&mt_com) < 0) {
berrno be;
dev_errno = errno;
Mmsg2(errmsg, _("ioctl MTLOAD error on %s. ERR=%s.\n"), prt_name, be.bstrerror());
return false;
}
return true;
#endif
}
/*
* Backward space a file
*
* Returns: false on failure
* true on success
*/
bool generic_tape_device::bsf(int num)
{
struct mtop mt_com;
int status;
if (!is_open()) {
dev_errno = EBADF;
Mmsg0(errmsg, _("Bad call to bsf. Device not open\n"));
Emsg0(M_FATAL, 0, errmsg);
return false;
}
Dmsg0(100, "bsf\n");
clear_eot();
clear_eof();
file -= num;
file_addr = 0;
file_size = 0;
mt_com.mt_op = MTBSF;
mt_com.mt_count = num;
status = d_ioctl(m_fd, MTIOCTOP, (char *)&mt_com);
if (status < 0) {
berrno be;
clrerror(mt_com.mt_op);
Mmsg2(errmsg, _("ioctl MTBSF error on %s. ERR=%s.\n"), prt_name, be.bstrerror());
}
return status == 0;
}
/* Returns file position on tape or -1 */
int32_t DEVICE::get_os_tape_file()
{
struct mtget mt_stat;
if (has_cap(CAP_MTIOCGET) &&
d_ioctl(m_fd, MTIOCGET, (char *)&mt_stat) == 0) {
return mt_stat.mt_fileno;
}
return -1;
}
int d_flush(uint16_t dev)
{
/* Not as clean as would be ideal : FIXME */
int r = d_ioctl(dev, BLKFLSBUF, 0);
/* Not knowing the ioctl is not an offence */
if (r && udata.u_error == ENOTTY) {
udata.u_error = 0;
r = 0;
}
return r;
}
void generic_tape_device::unlock_door()
{
#ifdef MTUNLOCK
struct mtop mt_com;
mt_com.mt_op = MTUNLOCK;
mt_com.mt_count = 1;
if (d_ioctl(m_fd, MTIOCTOP, (char *)&mt_com) < 0) {
clrerror(mt_com.mt_op);
}
#endif
}
/*
* Foward space num records
*
* Returns: false on failure
* true on success
*/
bool generic_tape_device::fsr(int num)
{
struct mtop mt_com;
int status;
if (!is_open()) {
dev_errno = EBADF;
Mmsg0(errmsg, _("Bad call to fsr. Device not open\n"));
Emsg0(M_FATAL, 0, errmsg);
return false;
}
if (!has_cap(CAP_FSR)) {
Mmsg1(errmsg, _("ioctl MTFSR not permitted on %s.\n"), prt_name);
return false;
}
Dmsg1(100, "fsr %d\n", num);
mt_com.mt_op = MTFSR;
mt_com.mt_count = num;
status = d_ioctl(m_fd, MTIOCTOP, (char *)&mt_com);
if (status == 0) {
clear_eof();
block_num += num;
} else {
berrno be;
struct mtget mt_stat;
clrerror(mt_com.mt_op);
Dmsg1(100, "FSF fail: ERR=%s\n", be.bstrerror());
if (dev_get_os_pos(this, &mt_stat)) {
Dmsg4(100, "Adjust from %d:%d to %d:%d\n", file,
block_num, mt_stat.mt_fileno, mt_stat.mt_blkno);
file = mt_stat.mt_fileno;
block_num = mt_stat.mt_blkno;
} else {
if (at_eof()) {
set_eot();
} else {
set_ateof();
}
}
Mmsg3(errmsg, _("ioctl MTFSR %d error on %s. ERR=%s.\n"), num, prt_name, be.bstrerror());
}
return status == 0;
}
/*
* Write an end of file on the device
*
* Returns: true on success
* false on failure
*/
bool generic_tape_device::weof(int num)
{
struct mtop mt_com;
int status;
Dmsg1(129, "=== weof_dev=%s\n", prt_name);
if (!is_open()) {
dev_errno = EBADF;
Mmsg0(errmsg, _("Bad call to weof_dev. Device not open\n"));
Emsg0(M_FATAL, 0, errmsg);
return false;
}
file_size = 0;
if (!can_append()) {
Mmsg0(errmsg, _("Attempt to WEOF on non-appendable Volume\n"));
Emsg0(M_FATAL, 0, errmsg);
return false;
}
clear_eof();
clear_eot();
mt_com.mt_op = MTWEOF;
mt_com.mt_count = num;
status = d_ioctl(m_fd, MTIOCTOP, (char *)&mt_com);
if (status == 0) {
block_num = 0;
file += num;
file_addr = 0;
} else {
berrno be;
clrerror(mt_com.mt_op);
if (status == -1) {
Mmsg2(errmsg, _("ioctl MTWEOF error on %s. ERR=%s.\n"), prt_name, be.bstrerror());
}
}
return status == 0;
}
/*
* Rewind device and put it offline
*
* Returns: true on success
* false on failure
*/
bool generic_tape_device::offline()
{
struct mtop mt_com;
state &= ~(ST_APPENDREADY | ST_READREADY | ST_EOT | ST_EOF | ST_WEOT); /* remove EOF/EOT flags */
block_num = file = 0;
file_size = 0;
file_addr = 0;
unlock_door();
mt_com.mt_op = MTOFFL;
mt_com.mt_count = 1;
if (d_ioctl(m_fd, MTIOCTOP, (char *)&mt_com) < 0) {
berrno be;
dev_errno = errno;
Mmsg2(errmsg, _("ioctl MTOFFL error on %s. ERR=%s.\n"), prt_name, be.bstrerror());
return false;
}
Dmsg1(100, "Offlined device %s\n", prt_name);
return true;
}
/*
* If implemented in system, clear the tape
* error status.
*/
void DEVICE::clrerror(int func)
{
const char *msg = NULL;
char buf[100];
dev_errno = errno; /* save errno */
if (errno == EIO) {
VolCatInfo.VolCatErrors++;
}
if (!is_tape()) {
return;
}
if (errno == ENOTTY || errno == ENOSYS) { /* Function not implemented */
switch (func) {
case -1:
break; /* ignore message printed later */
case MTWEOF:
msg = "WTWEOF";
clear_cap(CAP_EOF); /* turn off feature */
break;
#ifdef MTEOM
case MTEOM:
msg = "WTEOM";
clear_cap(CAP_EOM); /* turn off feature */
break;
#endif
case MTFSF:
msg = "MTFSF";
clear_cap(CAP_FSF); /* turn off feature */
break;
case MTBSF:
msg = "MTBSF";
clear_cap(CAP_BSF); /* turn off feature */
break;
case MTFSR:
msg = "MTFSR";
clear_cap(CAP_FSR); /* turn off feature */
break;
case MTBSR:
msg = "MTBSR";
clear_cap(CAP_BSR); /* turn off feature */
break;
case MTREW:
msg = "MTREW";
break;
#ifdef MTSETBLK
case MTSETBLK:
msg = "MTSETBLK";
break;
#endif
#ifdef MTSETDRVBUFFER
case MTSETDRVBUFFER:
msg = "MTSETDRVBUFFER";
break;
#endif
#ifdef MTRESET
case MTRESET:
msg = "MTRESET";
break;
#endif
#ifdef MTSETBSIZ
case MTSETBSIZ:
msg = "MTSETBSIZ";
break;
#endif
#ifdef MTSRSZ
case MTSRSZ:
msg = "MTSRSZ";
break;
#endif
#ifdef MTLOAD
case MTLOAD:
msg = "MTLOAD";
break;
#endif
#ifdef MTUNLOCK
case MTUNLOCK:
msg = "MTUNLOCK";
break;
#endif
case MTOFFL:
msg = "MTOFFL";
break;
default:
bsnprintf(buf, sizeof(buf), _("unknown func code %d"), func);
msg = buf;
break;
}
if (msg != NULL) {
dev_errno = ENOSYS;
Mmsg1(errmsg, _("I/O function \"%s\" not supported on this device.\n"), msg);
Emsg0(M_ERROR, 0, errmsg);
}
}
/*
* Now we try different methods of clearing the error
* status on the drive so that it is not locked for
* further operations.
*/
/* On some systems such as NetBSD, this clears all errors */
get_os_tape_file();
/* Found on Solaris */
#ifdef MTIOCLRERR
{
d_ioctl(m_fd, MTIOCLRERR);
Dmsg0(200, "Did MTIOCLRERR\n");
}
#endif
/* Typically on FreeBSD */
#ifdef MTIOCERRSTAT
{
berrno be;
/* Read and clear SCSI error status */
union mterrstat mt_errstat;
Dmsg2(200, "Doing MTIOCERRSTAT errno=%d ERR=%s\n", dev_errno,
be.bstrerror(dev_errno));
d_ioctl(m_fd, MTIOCERRSTAT, (char *)&mt_errstat);
}
#endif
/* Clear Subsystem Exception TRU64 */
#ifdef MTCSE
{
struct mtop mt_com;
mt_com.mt_op = MTCSE;
mt_com.mt_count = 1;
/* Clear any error condition on the tape */
d_ioctl(m_fd, MTIOCTOP, (char *)&mt_com);
Dmsg0(200, "Did MTCSE\n");
}
#endif
}
/*
* Foward space a file
*
* Returns: true on success
* false on failure
*/
bool generic_tape_device::fsf(int num)
{
int32_t os_file = 0;
struct mtop mt_com;
int status = 0;
if (!is_open()) {
dev_errno = EBADF;
Mmsg0(errmsg, _("Bad call to fsf. Device not open\n"));
Emsg0(M_FATAL, 0, errmsg);
return false;
}
if (at_eot()) {
dev_errno = 0;
Mmsg1(errmsg, _("Device %s at End of Tape.\n"), prt_name);
return false;
}
if (at_eof()) {
Dmsg0(200, "ST_EOF set on entry to FSF\n");
}
Dmsg0(100, "fsf\n");
block_num = 0;
/*
* If Fast forward space file is set, then we
* use MTFSF to forward space and MTIOCGET
* to get the file position. We assume that
* the SCSI driver will ensure that we do not
* forward space past the end of the medium.
*/
if (has_cap(CAP_FSF) && has_cap(CAP_MTIOCGET) && has_cap(CAP_FASTFSF)) {
int my_errno = 0;
mt_com.mt_op = MTFSF;
mt_com.mt_count = num;
status = d_ioctl(m_fd, MTIOCTOP, (char *)&mt_com);
if (status < 0) {
my_errno = errno; /* save errno */
} else if ((os_file=get_os_tape_file()) < 0) {
my_errno = errno; /* save errno */
}
if (my_errno != 0) {
berrno be;
set_eot();
Dmsg0(200, "Set ST_EOT\n");
clrerror(mt_com.mt_op);
Mmsg2(errmsg, _("ioctl MTFSF error on %s. ERR=%s.\n"), prt_name, be.bstrerror(my_errno));
Dmsg1(200, "%s", errmsg);
return false;
}
Dmsg1(200, "fsf file=%d\n", os_file);
set_ateof();
file = os_file;
return true;
/*
* Here if CAP_FSF is set, and virtually all drives
* these days support it, we read a record, then forward
* space one file. Using this procedure, which is slow,
* is the only way we can be sure that we don't read
* two consecutive EOF marks, which means End of Data.
*/
} else if (has_cap(CAP_FSF)) {
POOLMEM *rbuf;
int rbuf_len;
Dmsg0(200, "FSF has cap_fsf\n");
if (max_block_size == 0) {
rbuf_len = DEFAULT_BLOCK_SIZE;
} else {
rbuf_len = max_block_size;
}
rbuf = get_memory(rbuf_len);
mt_com.mt_op = MTFSF;
mt_com.mt_count = 1;
while (num-- && !at_eot()) {
Dmsg0(100, "Doing read before fsf\n");
if ((status = this->read((char *)rbuf, rbuf_len)) < 0) {
if (errno == ENOMEM) { /* tape record exceeds buf len */
status = rbuf_len; /* This is OK */
/*
* On IBM drives, they return ENOSPC at EOM instead of EOF status
*/
} else if (at_eof() && errno == ENOSPC) {
status = 0;
} else if (has_cap(CAP_IOERRATEOM) && at_eof() && errno == EIO) {
if (has_cap(CAP_IBMLINTAPE)) {
Dmsg0(100, "Got EIO on read, checking lin_tape sense data\n");
if (check_scsi_at_eod(m_fd)) {
Dmsg0(100, "Sense data confirms it's EOD\n");
status = 0;
} else {
Dmsg0(100, "Not at EOD, might be a real error. Check sense trace from lin_taped logs.\n");
set_eot();
clrerror(-1);
Mmsg1(errmsg, _("read error on %s. ERR=Input/Output error.\n"), prt_name);
break;
}
} else {
Dmsg0(100, "Got EIO on read, assuming that's due to EOD\n");
status = 0;
}
} else {
berrno be;
set_eot();
clrerror(-1);
Dmsg2(100, "Set ST_EOT read errno=%d. ERR=%s\n", dev_errno, be.bstrerror());
Mmsg2(errmsg, _("read error on %s. ERR=%s.\n"), prt_name, be.bstrerror());
Dmsg1(100, "%s", errmsg);
break;
}
}
if (status == 0) { /* EOF */
Dmsg1(100, "End of File mark from read. File=%d\n", file+1);
/*
* Two reads of zero means end of tape
*/
if (at_eof()) {
set_eot();
Dmsg0(100, "Set ST_EOT\n");
break;
} else {
set_ateof();
continue;
}
} else { /* Got data */
clear_eot();
clear_eof();
}
Dmsg0(100, "Doing MTFSF\n");
status = d_ioctl(m_fd, MTIOCTOP, (char *)&mt_com);
if (status < 0) { /* error => EOT */
berrno be;
set_eot();
Dmsg0(100, "Set ST_EOT\n");
clrerror(mt_com.mt_op);
Mmsg2(errmsg, _("ioctl MTFSF error on %s. ERR=%s.\n"), prt_name, be.bstrerror());
Dmsg0(100, "Got < 0 for MTFSF\n");
Dmsg1(100, "%s", errmsg);
} else {
set_ateof();
}
}
free_memory(rbuf);
/*
* No FSF, so use FSR to simulate it
*/
} else {
Dmsg0(200, "Doing FSR for FSF\n");
while (num-- && !at_eot()) {
fsr(INT32_MAX); /* returns -1 on EOF or EOT */
}
if (at_eot()) {
dev_errno = 0;
Mmsg1(errmsg, _("Device %s at End of Tape.\n"), prt_name);
status = -1;
} else {
status = 0;
}
}
Dmsg1(200, "Return %d from FSF\n", status);
if (at_eof()) {
Dmsg0(200, "ST_EOF set on exit FSF\n");
}
if (at_eot()) {
Dmsg0(200, "ST_EOT set on exit FSF\n");
}
Dmsg1(200, "Return from FSF file=%d\n", file);
return status == 0;
}
/*
* Open a tape device
*/
void generic_tape_device::open_device(DCR *dcr, int omode)
{
file_size = 0;
int timeout = max_open_wait;
#if !defined(HAVE_WIN32)
struct mtop mt_com;
utime_t start_time = time(NULL);
#endif
mount(dcr, 1); /* do mount if required */
Dmsg0(100, "Open dev: device is tape\n");
get_autochanger_loaded_slot(dcr);
open_mode = omode;
set_mode(omode);
if (timeout < 1) {
timeout = 1;
}
errno = 0;
Dmsg2(100, "Try open %s mode=%s\n", prt_name, mode_to_str(omode));
#if defined(HAVE_WIN32)
/*
* Windows Code
*/
if ((m_fd = d_open(dev_name, oflags, 0)) < 0) {
dev_errno = errno;
}
#else
/*
* UNIX Code
*
* If busy retry each second for max_open_wait seconds
*/
for ( ;; ) {
/*
* Try non-blocking open
*/
m_fd = d_open(dev_name, oflags | O_NONBLOCK, 0);
if (m_fd < 0) {
berrno be;
dev_errno = errno;
Dmsg5(100, "Open error on %s omode=%d oflags=%x errno=%d: ERR=%s\n",
prt_name, omode, oflags, errno, be.bstrerror());
} else {
/*
* Tape open, now rewind it
*/
Dmsg0(100, "Rewind after open\n");
mt_com.mt_op = MTREW;
mt_com.mt_count = 1;
/*
* Rewind only if dev is a tape
*/
if (d_ioctl(m_fd, MTIOCTOP, (char *)&mt_com) < 0) {
berrno be;
dev_errno = errno; /* set error status from rewind */
d_close(m_fd);
clear_opened();
Dmsg2(100, "Rewind error on %s close: ERR=%s\n", prt_name, be.bstrerror(dev_errno));
/*
* If we get busy, device is probably rewinding, try again
*/
if (dev_errno != EBUSY) {
break; /* error -- no medium */
}
} else {
/*
* Got fd and rewind worked, so we must have medium in drive
*/
d_close(m_fd);
m_fd = d_open(dev_name, oflags, 0); /* open normally */
if (m_fd < 0) {
berrno be;
dev_errno = errno;
Dmsg5(100, "Open error on %s omode=%d oflags=%x errno=%d: ERR=%s\n",
prt_name, omode, oflags, errno, be.bstrerror());
break;
}
dev_errno = 0;
lock_door();
set_os_device_parameters(dcr); /* do system dependent stuff */
break; /* Successfully opened and rewound */
}
}
bmicrosleep(5, 0);
/*
* Exceed wait time ?
*/
if (time(NULL) - start_time >= max_open_wait) {
break; /* yes, get out */
}
}
#endif
if (!is_open()) {
berrno be;
Mmsg2(errmsg, _("Unable to open device %s: ERR=%s\n"),
prt_name, be.bstrerror(dev_errno));
Dmsg1(100, "%s", errmsg);
}
Dmsg1(100, "open dev: tape %d opened\n", m_fd);
}
/*
* Position device to end of medium (end of data)
*
* Returns: true on succes
* false on error
*/
bool generic_tape_device::eod(DCR *dcr)
{
struct mtop mt_com;
bool ok = true;
int32_t os_file;
if (m_fd < 0) {
dev_errno = EBADF;
Mmsg1(errmsg, _("Bad call to eod. Device %s not open\n"), prt_name);
return false;
}
#if defined (__digital__) && defined (__unix__)
return fsf(VolCatInfo.VolCatFiles);
#endif
Dmsg0(100, "Enter eod\n");
if (at_eot()) {
return true;
}
clear_eof(); /* remove EOF flag */
block_num = file = 0;
file_size = 0;
file_addr = 0;
#ifdef MTEOM
if (has_cap(CAP_FASTFSF) && !has_cap(CAP_EOM)) {
Dmsg0(100,"Using FAST FSF for EOM\n");
/*
* If unknown position, rewind
*/
if (get_os_tape_file() < 0) {
if (!rewind(NULL)) {
Dmsg0(100, "Rewind error\n");
return false;
}
}
mt_com.mt_op = MTFSF;
/*
* ***FIXME*** fix code to handle case that INT16_MAX is not large enough.
*/
mt_com.mt_count = INT16_MAX; /* use big positive number */
if (mt_com.mt_count < 0) {
mt_com.mt_count = INT16_MAX; /* brain damaged system */
}
}
if (has_cap(CAP_MTIOCGET) && (has_cap(CAP_FASTFSF) || has_cap(CAP_EOM))) {
if (has_cap(CAP_EOM)) {
Dmsg0(100,"Using EOM for EOM\n");
mt_com.mt_op = MTEOM;
mt_com.mt_count = 1;
}
if (d_ioctl(m_fd, MTIOCTOP, (char *)&mt_com) < 0) {
berrno be;
clrerror(mt_com.mt_op);
Dmsg1(50, "ioctl error: %s\n", be.bstrerror());
update_pos(dcr);
Mmsg2(errmsg, _("ioctl MTEOM error on %s. ERR=%s.\n"), prt_name, be.bstrerror());
Dmsg0(100, errmsg);
return false;
}
os_file = get_os_tape_file();
if (os_file < 0) {
berrno be;
clrerror(-1);
Mmsg2(errmsg, _("ioctl MTIOCGET error on %s. ERR=%s.\n"), prt_name, be.bstrerror());
Dmsg0(100, errmsg);
return false;
}
Dmsg1(100, "EOD file=%d\n", os_file);
set_ateof();
file = os_file;
} else {
#endif
/*
* Rewind then use FSF until EOT reached
*/
if (!rewind(NULL)) {
Dmsg0(100, "Rewind error.\n");
return false;
}
/*
* Move file by file to the end of the tape
*/
int file_num;
for (file_num=file; !at_eot(); file_num++) {
Dmsg0(200, "eod: doing fsf 1\n");
if (!fsf(1)) {
Dmsg0(100, "fsf error.\n");
return false;
}
/*
* Avoid infinite loop by ensuring we advance.
*/
if (!at_eot() && file_num == (int)file) {
Dmsg1(100, "fsf did not advance from file %d\n", file_num);
set_ateof();
os_file = get_os_tape_file();
if (os_file >= 0) {
Dmsg2(100, "Adjust file from %d to %d\n", file_num, os_file);
file = os_file;
}
break;
}
}
#ifdef MTEOM
}
#endif
/*
* Some drivers leave us after second EOF when doing MTEOM, so we must backup
* so that appending overwrites the second EOF.
*/
if (has_cap(CAP_BSFATEOM)) {
/*
* Backup over EOF
*/
ok = bsf(1);
/*
* If BSF worked and fileno is known (not -1), set file
*/
os_file = get_os_tape_file();
if (os_file >= 0) {
Dmsg2(100, "BSFATEOF adjust file from %d to %d\n", file , os_file);
file = os_file;
} else {
file++; /* wing it -- not correct on all OSes */
}
} else {
update_pos(dcr); /* update position */
}
Dmsg1(200, "EOD dev->file=%d\n", file);
return ok;
}
uint32_t generic_tape_device::status_dev()
{
struct mtget mt_stat;
uint32_t status = 0;
if (state & (ST_EOT | ST_WEOT)) {
status |= BMT_EOD;
Pmsg0(-20, " EOD");
}
if (state & ST_EOF) {
status |= BMT_EOF;
Pmsg0(-20, " EOF");
}
status |= BMT_TAPE;
Pmsg0(-20,_(" Bareos status:"));
Pmsg2(-20,_(" file=%d block=%d\n"), file, block_num);
if (d_ioctl(m_fd, MTIOCGET, (char *)&mt_stat) < 0) {
berrno be;
dev_errno = errno;
Mmsg2(errmsg, _("ioctl MTIOCGET error on %s. ERR=%s.\n"),
print_name(), be.bstrerror());
return 0;
}
Pmsg0(-20, _(" Device status:"));
#if defined(HAVE_LINUX_OS)
if (GMT_EOF(mt_stat.mt_gstat)) {
status |= BMT_EOF;
Pmsg0(-20, " EOF");
}
if (GMT_BOT(mt_stat.mt_gstat)) {
status |= BMT_BOT;
Pmsg0(-20, " BOT");
}
if (GMT_EOT(mt_stat.mt_gstat)) {
status |= BMT_EOT;
Pmsg0(-20, " EOT");
}
if (GMT_SM(mt_stat.mt_gstat)) {
status |= BMT_SM;
Pmsg0(-20, " SM");
}
if (GMT_EOD(mt_stat.mt_gstat)) {
status |= BMT_EOD;
Pmsg0(-20, " EOD");
}
if (GMT_WR_PROT(mt_stat.mt_gstat)) {
status |= BMT_WR_PROT;
Pmsg0(-20, " WR_PROT");
}
if (GMT_ONLINE(mt_stat.mt_gstat)) {
status |= BMT_ONLINE;
Pmsg0(-20, " ONLINE");
}
if (GMT_DR_OPEN(mt_stat.mt_gstat)) {
status |= BMT_DR_OPEN;
Pmsg0(-20, " DR_OPEN");
}
if (GMT_IM_REP_EN(mt_stat.mt_gstat)) {
status |= BMT_IM_REP_EN;
Pmsg0(-20, " IM_REP_EN");
}
#elif defined(HAVE_WIN32)
if (GMT_EOF(mt_stat.mt_gstat)) {
status |= BMT_EOF;
Pmsg0(-20, " EOF");
}
if (GMT_BOT(mt_stat.mt_gstat)) {
status |= BMT_BOT;
Pmsg0(-20, " BOT");
}
if (GMT_EOT(mt_stat.mt_gstat)) {
status |= BMT_EOT;
Pmsg0(-20, " EOT");
}
if (GMT_EOD(mt_stat.mt_gstat)) {
status |= BMT_EOD;
Pmsg0(-20, " EOD");
}
if (GMT_WR_PROT(mt_stat.mt_gstat)) {
status |= BMT_WR_PROT;
Pmsg0(-20, " WR_PROT");
}
if (GMT_ONLINE(mt_stat.mt_gstat)) {
status |= BMT_ONLINE;
Pmsg0(-20, " ONLINE");
}
if (GMT_DR_OPEN(mt_stat.mt_gstat)) {
status |= BMT_DR_OPEN;
Pmsg0(-20, " DR_OPEN");
}
if (GMT_IM_REP_EN(mt_stat.mt_gstat)) {
status |= BMT_IM_REP_EN;
Pmsg0(-20, " IM_REP_EN");
}
#endif /* HAVE_LINUX_OS || HAVE_WIN32 */
if (has_cap(CAP_MTIOCGET)) {
Pmsg2(-20, _(" file=%d block=%d\n"), mt_stat.mt_fileno, mt_stat.mt_blkno);
} else {
Pmsg2(-20, _(" file=%d block=%d\n"), -1, -1);
}
return status;
}
/*
* Rewind the device.
*
* Returns: true on success
* false on failure
*/
bool generic_tape_device::rewind(DCR *dcr)
{
struct mtop mt_com;
unsigned int i;
bool first = true;
Dmsg3(400, "rewind res=%d fd=%d %s\n", num_reserved(), m_fd, prt_name);
state &= ~(ST_EOT | ST_EOF | ST_WEOT); /* Remove EOF/EOT flags */
block_num = file = 0;
file_size = 0;
file_addr = 0;
if (m_fd < 0) {
return false;
}
mt_com.mt_op = MTREW;
mt_com.mt_count = 1;
/*
* If we get an I/O error on rewind, it is probably because
* the drive is actually busy. We loop for (about 5 minutes)
* retrying every 5 seconds.
*/
for (i = max_rewind_wait; ; i -= 5) {
if (d_ioctl(m_fd, MTIOCTOP, (char *)&mt_com) < 0) {
berrno be;
clrerror(mt_com.mt_op);
if (i == max_rewind_wait) {
Dmsg1(200, "Rewind error, %s. retrying ...\n", be.bstrerror());
}
/*
* This is a gross hack, because if the user has the
* device mounted (i.e. open), then uses mtx to load
* a tape, the current open file descriptor is invalid.
* So, we close the drive and re-open it.
*/
if (first && dcr) {
int oo_mode = open_mode;
d_close(m_fd);
clear_opened();
open(dcr, oo_mode);
if (m_fd < 0) {
return false;
}
first = false;
continue;
}
#ifdef HAVE_SUN_OS
if (dev_errno == EIO) {
Mmsg1(errmsg, _("No tape loaded or drive offline on %s.\n"), prt_name);
return false;
}
#else
if (dev_errno == EIO && i > 0) {
Dmsg0(200, "Sleeping 5 seconds.\n");
bmicrosleep(5, 0);
continue;
}
#endif
Mmsg2(errmsg, _("Rewind error on %s. ERR=%s.\n"), prt_name, be.bstrerror());
return false;
}
break;
}
return true;
}
