Steve Hirsch, Andreas Koppenh"ofer, Michael Leodolter, Eyal Lebedinsky,
Michael Schaefer, J"org Weule, and Eric Youngdale.
- Copyright 1992 - 2004 Kai Makisara
+ Copyright 1992 - 2005 Kai Makisara
email Kai.Makisara@kolumbus.fi
Some small formal changes - aeb, 950809
Last modified: 18-JAN-1998 Richard Gooch <rgooch@atnf.csiro.au> Devfs support
*/
-static char *verstr = "20041025";
+static char *verstr = "20050312";
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/devfs_fs_kernel.h>
#include <linux/cdev.h>
+#include <linux/delay.h>
+
#include <asm/uaccess.h>
#include <asm/dma.h>
#include <asm/system.h>
#error "Buffer size should not exceed (2 << 24 - 1) bytes!"
#endif
-DEB( static int debugging = DEBUG; )
+static int debugging = DEBUG;
#define MAX_RETRIES 0
#define MAX_WRITE_RETRIES 0
return tape->disk->disk_name;
}
+
+static void st_analyze_sense(struct scsi_request *SRpnt, struct st_cmdstatus *s)
+{
+ const u8 *ucp;
+ const u8 *sense = SRpnt->sr_sense_buffer;
+
+ s->have_sense = scsi_request_normalize_sense(SRpnt, &s->sense_hdr);
+ s->flags = 0;
+
+ if (s->have_sense) {
+ s->deferred = 0;
+ s->remainder_valid =
+ scsi_get_sense_info_fld(sense, SCSI_SENSE_BUFFERSIZE, &s->uremainder64);
+ switch (sense[0] & 0x7f) {
+ case 0x71:
+ s->deferred = 1;
+ case 0x70:
+ s->fixed_format = 1;
+ s->flags = sense[2] & 0xe0;
+ break;
+ case 0x73:
+ s->deferred = 1;
+ case 0x72:
+ s->fixed_format = 0;
+ ucp = scsi_sense_desc_find(sense, SCSI_SENSE_BUFFERSIZE, 4);
+ s->flags = ucp ? (ucp[3] & 0xe0) : 0;
+ break;
+ }
+ }
+}
+
+
/* Convert the result to success code */
static int st_chk_result(struct scsi_tape *STp, struct scsi_request * SRpnt)
{
int result = SRpnt->sr_result;
- unsigned char *sense = SRpnt->sr_sense_buffer, scode;
+ u8 scode;
DEB(const char *stp;)
char *name = tape_name(STp);
+ struct st_cmdstatus *cmdstatp;
- if (!result) {
- sense[0] = 0; /* We don't have sense data if this byte is zero */
+ if (!result)
return 0;
- }
- if ((driver_byte(result) & DRIVER_MASK) == DRIVER_SENSE)
- scode = sense[2] & 0x0f;
- else {
- sense[0] = 0;
+ cmdstatp = &STp->buffer->cmdstat;
+ st_analyze_sense(STp->buffer->last_SRpnt, cmdstatp);
+
+ if (cmdstatp->have_sense)
+ scode = STp->buffer->cmdstat.sense_hdr.sense_key;
+ else
scode = 0;
- }
DEB(
if (debugging) {
SRpnt->sr_cmnd[0], SRpnt->sr_cmnd[1], SRpnt->sr_cmnd[2],
SRpnt->sr_cmnd[3], SRpnt->sr_cmnd[4], SRpnt->sr_cmnd[5],
SRpnt->sr_bufflen);
- if (driver_byte(result) & DRIVER_SENSE)
+ if (cmdstatp->have_sense)
scsi_print_req_sense("st", SRpnt);
- } else ) /* end DEB */
- if (!(driver_byte(result) & DRIVER_SENSE) ||
- ((sense[0] & 0x70) == 0x70 &&
- scode != NO_SENSE &&
- scode != RECOVERED_ERROR &&
- /* scode != UNIT_ATTENTION && */
- scode != BLANK_CHECK &&
- scode != VOLUME_OVERFLOW &&
- SRpnt->sr_cmnd[0] != MODE_SENSE &&
- SRpnt->sr_cmnd[0] != TEST_UNIT_READY)) { /* Abnormal conditions for tape */
- if (driver_byte(result) & DRIVER_SENSE) {
- printk(KERN_WARNING "%s: Error with sense data: ", name);
- scsi_print_req_sense("st", SRpnt);
- } else
+ } ) /* end DEB */
+ if (!debugging) { /* Abnormal conditions for tape */
+ if (!cmdstatp->have_sense)
printk(KERN_WARNING
"%s: Error %x (sugg. bt 0x%x, driver bt 0x%x, host bt 0x%x).\n",
name, result, suggestion(result),
- driver_byte(result) & DRIVER_MASK, host_byte(result));
+ driver_byte(result) & DRIVER_MASK, host_byte(result));
+ else if (cmdstatp->have_sense &&
+ scode != NO_SENSE &&
+ scode != RECOVERED_ERROR &&
+ /* scode != UNIT_ATTENTION && */
+ scode != BLANK_CHECK &&
+ scode != VOLUME_OVERFLOW &&
+ SRpnt->sr_cmnd[0] != MODE_SENSE &&
+ SRpnt->sr_cmnd[0] != TEST_UNIT_READY) {
+ printk(KERN_WARNING "%s: Error with sense data: ", name);
+ scsi_print_req_sense("st", SRpnt);
+ }
}
- if (STp->cln_mode >= EXTENDED_SENSE_START) {
+ if (cmdstatp->fixed_format &&
+ STp->cln_mode >= EXTENDED_SENSE_START) { /* Only fixed format sense */
if (STp->cln_sense_value)
STp->cleaning_req |= ((SRpnt->sr_sense_buffer[STp->cln_mode] &
STp->cln_sense_mask) == STp->cln_sense_value);
STp->cleaning_req |= ((SRpnt->sr_sense_buffer[STp->cln_mode] &
STp->cln_sense_mask) != 0);
}
- if (sense[12] == 0 && sense[13] == 0x17) /* ASC and ASCQ => cleaning requested */
- STp->cleaning_req = 1;
+ if (cmdstatp->have_sense &&
+ cmdstatp->sense_hdr.asc == 0 && cmdstatp->sense_hdr.ascq == 0x17)
+ STp->cleaning_req = 1; /* ASC and ASCQ => cleaning requested */
STp->pos_unknown |= STp->device->was_reset;
- if ((sense[0] & 0x70) == 0x70 &&
+ if (cmdstatp->have_sense &&
scode == RECOVERED_ERROR
#if ST_RECOVERED_WRITE_FATAL
&& SRpnt->sr_cmnd[0] != WRITE_6
STp->recover_count);
} ) /* end DEB */
- if ((sense[2] & 0xe0) == 0)
+ if (cmdstatp->flags == 0)
return 0;
}
return (-EIO);
/* Wakeup from interrupt */
static void st_sleep_done(struct scsi_cmnd * SCpnt)
{
- int remainder;
struct scsi_tape *STp = container_of(SCpnt->request->rq_disk->private_data,
struct scsi_tape, driver);
- if ((STp->buffer)->writing &&
- (SCpnt->sense_buffer[0] & 0x70) == 0x70 &&
- (SCpnt->sense_buffer[2] & 0x40)) {
- /* EOM at write-behind, has all been written? */
- if ((SCpnt->sense_buffer[0] & 0x80) != 0)
- remainder = (SCpnt->sense_buffer[3] << 24) |
- (SCpnt->sense_buffer[4] << 16) |
- (SCpnt->sense_buffer[5] << 8) |
- SCpnt->sense_buffer[6];
- else
- remainder = 0;
- if ((SCpnt->sense_buffer[2] & 0x0f) == VOLUME_OVERFLOW ||
- remainder > 0)
- (STp->buffer)->midlevel_result = SCpnt->result; /* Error */
- else
- (STp->buffer)->midlevel_result = INT_MAX; /* OK */
- } else
- (STp->buffer)->midlevel_result = SCpnt->result;
+ (STp->buffer)->cmdstat.midlevel_result = SCpnt->result;
SCpnt->request->rq_status = RQ_SCSI_DONE;
(STp->buffer)->last_SRpnt = SCpnt->sc_request;
DEB( STp->write_pending = 0; )
SRpnt->sr_request->waiting = &(STp->wait);
SRpnt->sr_request->rq_status = RQ_SCSI_BUSY;
SRpnt->sr_request->rq_disk = STp->disk;
+ STp->buffer->cmdstat.have_sense = 0;
scsi_do_req(SRpnt, (void *) cmd, bp, bytes,
st_sleep_done, timeout, retries);
}
-/* Handle the write-behind checking (downs the semaphore) */
-static void write_behind_check(struct scsi_tape * STp)
+/* Handle the write-behind checking (waits for completion). Returns -ENOSPC if
+ write has been correct but EOM early warning reached, -EIO if write ended in
+ error or zero if write successful. Asynchronous writes are used only in
+ variable block mode. */
+static int write_behind_check(struct scsi_tape * STp)
{
+ int retval = 0;
struct st_buffer *STbuffer;
struct st_partstat *STps;
+ struct st_cmdstatus *cmdstatp;
STbuffer = STp->buffer;
+ if (!STbuffer->writing)
+ return 0;
DEB(
if (STp->write_pending)
else
STps->drv_block += STbuffer->writing / STp->block_size;
}
+
+ cmdstatp = &STbuffer->cmdstat;
+ if (STbuffer->syscall_result) {
+ retval = -EIO;
+ if (cmdstatp->have_sense && !cmdstatp->deferred &&
+ (cmdstatp->flags & SENSE_EOM) &&
+ (cmdstatp->sense_hdr.sense_key == NO_SENSE ||
+ cmdstatp->sense_hdr.sense_key == RECOVERED_ERROR)) {
+ /* EOM at write-behind, has all data been written? */
+ if (!cmdstatp->remainder_valid ||
+ cmdstatp->uremainder64 == 0)
+ retval = -ENOSPC;
+ }
+ if (retval == -EIO)
+ STps->drv_block = -1;
+ }
STbuffer->writing = 0;
- return;
+ DEB(if (debugging && retval)
+ printk(ST_DEB_MSG "%s: Async write error %x, return value %d.\n",
+ tape_name(STp), STbuffer->cmdstat.midlevel_result, retval);) /* end DEB */
+
+ return retval;
}
scsi_release_request(SRpnt);
SRpnt = NULL;
- if ((STp->buffer)->midlevel_result != 0)
+ if ((STp->buffer)->cmdstat.midlevel_result != 0)
printk(KERN_ERR "%s: Stepping over filemark %s failed.\n",
tape_name(STp), forward ? "forward" : "backward");
struct scsi_request *SRpnt;
struct st_partstat *STps;
- if ((STp->buffer)->writing) {
- write_behind_check(STp);
- if ((STp->buffer)->syscall_result) {
- DEBC(printk(ST_DEB_MSG
- "%s: Async write error (flush) %x.\n",
- tape_name(STp), (STp->buffer)->midlevel_result))
- if ((STp->buffer)->midlevel_result == INT_MAX)
- return (-ENOSPC);
- return (-EIO);
- }
- }
- if (STp->block_size == 0)
- return 0;
+ result = write_behind_check(STp);
+ if (result)
+ return result;
result = 0;
if (STp->dirty == 1) {
STps = &(STp->ps[STp->partition]);
if ((STp->buffer)->syscall_result != 0) {
- if ((SRpnt->sr_sense_buffer[0] & 0x70) == 0x70 &&
- (SRpnt->sr_sense_buffer[2] & 0x40) &&
- (SRpnt->sr_sense_buffer[2] & 0x0f) == NO_SENSE) {
+ struct st_cmdstatus *cmdstatp = &STp->buffer->cmdstat;
+
+ if (cmdstatp->have_sense && !cmdstatp->deferred &&
+ (cmdstatp->flags & SENSE_EOM) &&
+ (cmdstatp->sense_hdr.sense_key == NO_SENSE ||
+ cmdstatp->sense_hdr.sense_key == RECOVERED_ERROR) &&
+ (!cmdstatp->remainder_valid ||
+ cmdstatp->uremainder64 == 0)) { /* All written at EOM early warning */
STp->dirty = 0;
(STp->buffer)->buffer_bytes = 0;
+ if (STps->drv_block >= 0)
+ STps->drv_block += blks;
result = (-ENOSPC);
} else {
printk(KERN_ERR "%s: Error on flush.\n",
tape_name(STp));
+ STps->drv_block = (-1);
result = (-EIO);
}
- STps->drv_block = (-1);
} else {
if (STps->drv_block >= 0)
STps->drv_block += blks;
int retval = CHKRES_READY, new_session = 0;
unsigned char cmd[MAX_COMMAND_SIZE];
struct scsi_request *SRpnt = NULL;
+ struct st_cmdstatus *cmdstatp = &STp->buffer->cmdstat;
max_wait = do_wait ? ST_BLOCK_SECONDS : 0;
break;
}
- if ((SRpnt->sr_sense_buffer[0] & 0x70) == 0x70) {
+ if (cmdstatp->have_sense) {
- scode = (SRpnt->sr_sense_buffer[2] & 0x0f);
+ scode = cmdstatp->sense_hdr.sense_key;
if (scode == UNIT_ATTENTION) { /* New media? */
new_session = 1;
if (scode == NOT_READY) {
if (waits < max_wait) {
- set_current_state(TASK_INTERRUPTIBLE);
- schedule_timeout(HZ);
- if (signal_pending(current)) {
+ if (msleep_interruptible(1000)) {
retval = (-EINTR);
break;
}
}
else {
if ((STp->device)->scsi_level >= SCSI_2 &&
- SRpnt->sr_sense_buffer[12] == 0x3a) /* Check ASC */
+ cmdstatp->sense_hdr.asc == 0x3a) /* Check ASC */
retval = CHKRES_NO_TAPE;
else
retval = CHKRES_NOT_READY;
goto err_out;
}
- if (!SRpnt->sr_result && !SRpnt->sr_sense_buffer[0]) {
+ if (!SRpnt->sr_result && !STp->buffer->cmdstat.have_sense) {
STp->max_block = ((STp->buffer)->b_data[1] << 16) |
((STp->buffer)->b_data[2] << 8) | (STp->buffer)->b_data[3];
STp->min_block = ((STp->buffer)->b_data[4] << 8) |
int dev = TAPE_NR(inode);
char *name;
- nonseekable_open(inode, filp);
+ /*
+ * We really want to do nonseekable_open(inode, filp); here, but some
+ * versions of tar incorrectly call lseek on tapes and bail out if that
+ * fails. So we disallow pread() and pwrite(), but permit lseeks.
+ */
+ filp->f_mode &= ~(FMODE_PREAD | FMODE_PWRITE);
+
write_lock(&st_dev_arr_lock);
if (dev >= st_dev_max || scsi_tapes == NULL ||
((STp = scsi_tapes[dev]) == NULL)) {
name, STp->nbr_requests, STp->nbr_dio, STp->nbr_pages, STp->nbr_combinable));
if (STps->rw == ST_WRITING && !STp->pos_unknown) {
+ struct st_cmdstatus *cmdstatp = &STp->buffer->cmdstat;
- DEBC(printk(ST_DEB_MSG "%s: File length %lld bytes.\n",
- name, (long long)filp->f_pos);
- printk(ST_DEB_MSG "%s: Async write waits %d, finished %d.\n",
+ DEBC(printk(ST_DEB_MSG "%s: Async write waits %d, finished %d.\n",
name, STp->nbr_waits, STp->nbr_finished);
)
goto out;
}
- if ((STp->buffer)->syscall_result != 0 &&
- ((SRpnt->sr_sense_buffer[0] & 0x70) != 0x70 ||
- (SRpnt->sr_sense_buffer[2] & 0x4f) != 0x40 ||
- ((SRpnt->sr_sense_buffer[0] & 0x80) != 0 &&
- (SRpnt->sr_sense_buffer[3] | SRpnt->sr_sense_buffer[4] |
- SRpnt->sr_sense_buffer[5] |
- SRpnt->sr_sense_buffer[6]) != 0))) {
- /* Filter out successful write at EOM */
- scsi_release_request(SRpnt);
- SRpnt = NULL;
- printk(KERN_ERR "%s: Error on write filemark.\n", name);
- if (result == 0)
- result = (-EIO);
- } else {
+ if (STp->buffer->syscall_result == 0 ||
+ (cmdstatp->have_sense && !cmdstatp->deferred &&
+ (cmdstatp->flags & SENSE_EOM) &&
+ (cmdstatp->sense_hdr.sense_key == NO_SENSE ||
+ cmdstatp->sense_hdr.sense_key == RECOVERED_ERROR) &&
+ (!cmdstatp->remainder_valid || cmdstatp->uremainder64 == 0))) {
+ /* Write successful at EOM */
scsi_release_request(SRpnt);
SRpnt = NULL;
if (STps->drv_file >= 0)
cross_eof(STp, 0);
STps->eof = ST_FM;
}
+ else { /* Write error */
+ scsi_release_request(SRpnt);
+ SRpnt = NULL;
+ printk(KERN_ERR "%s: Error on write filemark.\n", name);
+ if (result == 0)
+ result = (-EIO);
+ }
DEBC(printk(ST_DEB_MSG "%s: Buffer flushed, %d EOF(s) written\n",
name, cmd[4]));
}
STbp = STp->buffer;
- if (STbp->writing) {
- write_behind_check(STp);
- if (STbp->syscall_result) {
- DEBC(printk(ST_DEB_MSG "%s: Async write error (write) %x.\n",
- name, STbp->midlevel_result));
- if (STbp->midlevel_result == INT_MAX)
- STps->eof = ST_EOM_OK;
- else
- STps->eof = ST_EOM_ERROR;
- }
+ i = write_behind_check(STp);
+ if (i) {
+ if (i == -ENOSPC)
+ STps->eof = ST_EOM_OK;
+ else
+ STps->eof = ST_EOM_ERROR;
}
if (STps->eof == ST_EOM_OK) {
}
}
count -= do_count;
- filp->f_pos += do_count;
b_point += do_count;
async_write = STp->block_size == 0 && !STbp->do_dio &&
}
if (STbp->syscall_result != 0) {
+ struct st_cmdstatus *cmdstatp = &STp->buffer->cmdstat;
+
DEBC(printk(ST_DEB_MSG "%s: Error on write:\n", name));
- if ((SRpnt->sr_sense_buffer[0] & 0x70) == 0x70 &&
- (SRpnt->sr_sense_buffer[2] & 0x40)) {
- scode = SRpnt->sr_sense_buffer[2] & 0x0f;
- if ((SRpnt->sr_sense_buffer[0] & 0x80) != 0)
- undone = (SRpnt->sr_sense_buffer[3] << 24) |
- (SRpnt->sr_sense_buffer[4] << 16) |
- (SRpnt->sr_sense_buffer[5] << 8) |
- SRpnt->sr_sense_buffer[6];
+ if (cmdstatp->have_sense && (cmdstatp->flags & SENSE_EOM)) {
+ scode = cmdstatp->sense_hdr.sense_key;
+ if (cmdstatp->remainder_valid)
+ undone = (int)cmdstatp->uremainder64;
else if (STp->block_size == 0 &&
scode == VOLUME_OVERFLOW)
undone = transfer;
undone = 0;
if (STp->block_size != 0)
undone *= STp->block_size;
- filp->f_pos -= undone;
if (undone <= do_count) {
/* Only data from this write is not written */
count += undone;
retval = (-ENOSPC); /* EOM within current request */
DEBC(printk(ST_DEB_MSG
"%s: EOM with %d bytes unwritten.\n",
- name, count));
+ name, (int)count));
} else {
/* EOT within data buffered earlier (possible only
in fixed block mode without direct i/o) */
- if (!retry_eot && (SRpnt->sr_sense_buffer[0] & 1) == 0 &&
+ if (!retry_eot && !cmdstatp->deferred &&
(scode == NO_SENSE || scode == RECOVERED_ERROR)) {
move_buffer_data(STp->buffer, transfer - undone);
retry_eot = 1;
}
}
} else {
- filp->f_pos -= do_count;
count += do_count;
STps->drv_block = (-1); /* Too cautious? */
retval = (-EIO);
/* Something to check */
if (STbp->syscall_result) {
+ struct st_cmdstatus *cmdstatp = &STp->buffer->cmdstat;
+
retval = 1;
DEBC(printk(ST_DEB_MSG "%s: Sense: %2x %2x %2x %2x %2x %2x %2x %2x\n",
name,
SRpnt->sr_sense_buffer[2], SRpnt->sr_sense_buffer[3],
SRpnt->sr_sense_buffer[4], SRpnt->sr_sense_buffer[5],
SRpnt->sr_sense_buffer[6], SRpnt->sr_sense_buffer[7]));
- if ((SRpnt->sr_sense_buffer[0] & 0x70) == 0x70) { /* extended sense */
+ if (cmdstatp->have_sense) {
- if ((SRpnt->sr_sense_buffer[2] & 0x0f) == BLANK_CHECK)
- SRpnt->sr_sense_buffer[2] &= 0xcf; /* No need for EOM in this case */
+ if (cmdstatp->sense_hdr.sense_key == BLANK_CHECK)
+ cmdstatp->flags &= 0xcf; /* No need for EOM in this case */
- if ((SRpnt->sr_sense_buffer[2] & 0xe0) != 0) { /* EOF, EOM, or ILI */
+ if (cmdstatp->flags != 0) { /* EOF, EOM, or ILI */
/* Compute the residual count */
- if ((SRpnt->sr_sense_buffer[0] & 0x80) != 0)
- transfer = (SRpnt->sr_sense_buffer[3] << 24) |
- (SRpnt->sr_sense_buffer[4] << 16) |
- (SRpnt->sr_sense_buffer[5] << 8) |
- SRpnt->sr_sense_buffer[6];
+ if (cmdstatp->remainder_valid)
+ transfer = (int)cmdstatp->uremainder64;
else
transfer = 0;
if (STp->block_size == 0 &&
- (SRpnt->sr_sense_buffer[2] & 0x0f) == MEDIUM_ERROR)
+ cmdstatp->sense_hdr.sense_key == MEDIUM_ERROR)
transfer = bytes;
- if (SRpnt->sr_sense_buffer[2] & 0x20) { /* ILI */
+ if (cmdstatp->flags & SENSE_ILI) { /* ILI */
if (STp->block_size == 0) {
if (transfer <= 0) {
if (transfer < 0)
if (st_int_ioctl(STp, MTBSR, 1))
return (-EIO);
}
- } else if (SRpnt->sr_sense_buffer[2] & 0x80) { /* FM overrides EOM */
+ } else if (cmdstatp->flags & SENSE_FMK) { /* FM overrides EOM */
if (STps->eof != ST_FM_HIT)
STps->eof = ST_FM_HIT;
else
DEBC(printk(ST_DEB_MSG
"%s: EOF detected (%d bytes read).\n",
name, STbp->buffer_bytes));
- } else if (SRpnt->sr_sense_buffer[2] & 0x40) {
+ } else if (cmdstatp->flags & SENSE_EOM) {
if (STps->eof == ST_FM)
STps->eof = ST_EOD_1;
else
"%s: Tape error while reading.\n", name));
STps->drv_block = (-1);
if (STps->eof == ST_FM &&
- (SRpnt->sr_sense_buffer[2] & 0x0f) == BLANK_CHECK) {
+ cmdstatp->sense_hdr.sense_key == BLANK_CHECK) {
DEBC(printk(ST_DEB_MSG
"%s: Zero returned for first BLANK CHECK after EOF.\n",
name));
printk(ST_DEB_MSG
"%s: EOF up (%d). Left %d, needed %d.\n", name,
STps->eof, STbp->buffer_bytes,
- count - total);
+ (int)(count - total));
) /* end DEB */
transfer = STbp->buffer_bytes < count - total ?
STbp->buffer_bytes : count - total;
goto out;
}
}
- filp->f_pos += transfer;
buf += transfer;
total += transfer;
}
return retval;
}
\f
+#if DEBUG
+#define ST_DEB_FORWARD 0
+#define ST_DEB_BACKWARD 1
+static void deb_space_print(char *name, int direction, char *units, unsigned char *cmd)
+{
+ s32 sc;
+
+ sc = cmd[2] & 0x80 ? 0xff000000 : 0;
+ sc |= (cmd[2] << 16) | (cmd[3] << 8) | cmd[4];
+ if (direction)
+ sc = -sc;
+ printk(ST_DEB_MSG "%s: Spacing tape %s over %d %s.\n", name,
+ direction ? "backward" : "forward", sc, units);
+}
+#endif
+
/* Internal ioctl function */
static int st_int_ioctl(struct scsi_tape *STp, unsigned int cmd_in, unsigned long arg)
cmd[2] = (arg >> 16);
cmd[3] = (arg >> 8);
cmd[4] = arg;
- DEBC(printk(ST_DEB_MSG "%s: Spacing tape forward over %d filemarks.\n",
- name, cmd[2] * 65536 + cmd[3] * 256 + cmd[4]));
+ DEBC(deb_space_print(name, ST_DEB_FORWARD, "filemarks", cmd);)
if (fileno >= 0)
fileno += arg;
blkno = 0;
cmd[2] = (ltmp >> 16);
cmd[3] = (ltmp >> 8);
cmd[4] = ltmp;
- DEBC(
- if (cmd[2] & 0x80)
- ltmp = 0xff000000;
- ltmp = ltmp | (cmd[2] << 16) | (cmd[3] << 8) | cmd[4];
- printk(ST_DEB_MSG
- "%s: Spacing tape backward over %ld filemarks.\n",
- name, (-ltmp));
- )
+ DEBC(deb_space_print(name, ST_DEB_BACKWARD, "filemarks", cmd);)
if (fileno >= 0)
fileno -= arg;
blkno = (-1); /* We can't know the block number */
cmd[2] = (arg >> 16);
cmd[3] = (arg >> 8);
cmd[4] = arg;
- DEBC(printk(ST_DEB_MSG "%s: Spacing tape forward %d blocks.\n", name,
- cmd[2] * 65536 + cmd[3] * 256 + cmd[4]));
+ DEBC(deb_space_print(name, ST_DEB_FORWARD, "blocks", cmd);)
if (blkno >= 0)
blkno += arg;
at_sm &= (arg == 0);
cmd[2] = (ltmp >> 16);
cmd[3] = (ltmp >> 8);
cmd[4] = ltmp;
- DEBC(
- if (cmd[2] & 0x80)
- ltmp = 0xff000000;
- ltmp = ltmp | (cmd[2] << 16) | (cmd[3] << 8) | cmd[4];
- printk(ST_DEB_MSG
- "%s: Spacing tape backward %ld blocks.\n", name, (-ltmp));
- )
+ DEBC(deb_space_print(name, ST_DEB_BACKWARD, "blocks", cmd);)
if (blkno >= 0)
blkno -= arg;
at_sm &= (arg == 0);
cmd[2] = (arg >> 16);
cmd[3] = (arg >> 8);
cmd[4] = arg;
- DEBC(printk(ST_DEB_MSG "%s: Spacing tape forward %d setmarks.\n", name,
- cmd[2] * 65536 + cmd[3] * 256 + cmd[4]));
+ DEBC(deb_space_print(name, ST_DEB_FORWARD, "setmarks", cmd);)
if (arg != 0) {
blkno = fileno = (-1);
at_sm = 1;
cmd[2] = (ltmp >> 16);
cmd[3] = (ltmp >> 8);
cmd[4] = ltmp;
- DEBC(
- if (cmd[2] & 0x80)
- ltmp = 0xff000000;
- ltmp = ltmp | (cmd[2] << 16) | (cmd[3] << 8) | cmd[4];
- printk(ST_DEB_MSG "%s: Spacing tape backward %ld setmarks.\n",
- name, (-ltmp));
- )
+ DEBC(deb_space_print(name, ST_DEB_BACKWARD, "setmarks", cmd);)
if (arg != 0) {
blkno = fileno = (-1);
at_sm = 1;
cmd[1] = 3;
DEBC(printk(ST_DEB_MSG "%s: Spacing to end of recorded medium.\n",
name));
- blkno = 0;
+ blkno = -1;
at_sm = 0;
break;
case MTERASE:
else if (chg_eof)
STps->eof = ST_NOEOF;
+ if (cmd_in == MTWEOF)
+ STps->rw = ST_IDLE;
} else { /* SCSI command was not completely successful. Don't return
from this block without releasing the SCSI command block! */
+ struct st_cmdstatus *cmdstatp = &STp->buffer->cmdstat;
- if (SRpnt->sr_sense_buffer[2] & 0x40) {
+ if (cmdstatp->flags & SENSE_EOM) {
if (cmd_in != MTBSF && cmd_in != MTBSFM &&
cmd_in != MTBSR && cmd_in != MTBSS)
STps->eof = ST_EOM_OK;
STps->drv_block = 0;
}
- undone = ((SRpnt->sr_sense_buffer[3] << 24) +
- (SRpnt->sr_sense_buffer[4] << 16) +
- (SRpnt->sr_sense_buffer[5] << 8) +
- SRpnt->sr_sense_buffer[6]);
+ if (cmdstatp->remainder_valid)
+ undone = (int)cmdstatp->uremainder64;
+ else
+ undone = 0;
if (cmd_in == MTWEOF &&
- (SRpnt->sr_sense_buffer[0] & 0x70) == 0x70 &&
- (SRpnt->sr_sense_buffer[2] & 0x4f) == 0x40 &&
- ((SRpnt->sr_sense_buffer[0] & 0x80) == 0 || undone == 0)) {
+ cmdstatp->have_sense &&
+ (cmdstatp->flags & SENSE_EOM) &&
+ (cmdstatp->sense_hdr.sense_key == NO_SENSE ||
+ cmdstatp->sense_hdr.sense_key == RECOVERED_ERROR) &&
+ undone == 0) {
ioctl_result = 0; /* EOF written succesfully at EOM */
if (fileno >= 0)
fileno++;
STps->drv_file = fileno - undone;
else
STps->drv_file = fileno;
- STps->drv_block = 0;
+ STps->drv_block = -1;
STps->eof = ST_NOEOF;
} else if ((cmd_in == MTBSF) || (cmd_in == MTBSFM)) {
if (arg > 0 && undone < 0) /* Some drives get this wrong */
STps->drv_block = 0;
STps->eof = ST_NOEOF;
} else if (cmd_in == MTFSR) {
- if (SRpnt->sr_sense_buffer[2] & 0x80) { /* Hit filemark */
+ if (cmdstatp->flags & SENSE_FMK) { /* Hit filemark */
if (STps->drv_file >= 0)
STps->drv_file++;
STps->drv_block = 0;
STps->eof = ST_NOEOF;
}
} else if (cmd_in == MTBSR) {
- if (SRpnt->sr_sense_buffer[2] & 0x80) { /* Hit filemark */
+ if (cmdstatp->flags & SENSE_FMK) { /* Hit filemark */
STps->drv_file--;
STps->drv_block = (-1);
} else {
cmd_in == MTSETDENSITY ||
cmd_in == MTSETDRVBUFFER ||
cmd_in == SET_DENS_AND_BLK) {
- if ((SRpnt->sr_sense_buffer[2] & 0x0f) == ILLEGAL_REQUEST &&
+ if (cmdstatp->sense_hdr.sense_key == ILLEGAL_REQUEST &&
!(STp->use_pf & PF_TESTED)) {
/* Try the other possible state of Page Format if not
already tried */
} else if (chg_eof)
STps->eof = ST_NOEOF;
- if ((SRpnt->sr_sense_buffer[2] & 0x0f) == BLANK_CHECK)
+ if (cmdstatp->sense_hdr.sense_key == BLANK_CHECK)
STps->eof = ST_EOD;
scsi_release_request(SRpnt);
retval = i;
goto out;
}
+ if (STps->rw == ST_WRITING &&
+ (mtc.mt_op == MTREW || mtc.mt_op == MTOFFL ||
+ mtc.mt_op == MTSEEK ||
+ mtc.mt_op == MTBSF || mtc.mt_op == MTBSFM)) {
+ i = st_int_ioctl(STp, MTWEOF, 1);
+ if (i < 0) {
+ retval = i;
+ goto out;
+ }
+ if (mtc.mt_op == MTBSF || mtc.mt_op == MTBSFM)
+ mtc.mt_count++;
+ STps->rw = ST_IDLE;
+ }
+
} else {
/*
* If there was a bus reset, block further access
case SCSI_IOCTL_GET_BUS_NUMBER:
break;
default:
- i = scsi_cmd_ioctl(file, STp->disk, cmd_in, p);
+ if (!capable(CAP_SYS_ADMIN))
+ i = -EPERM;
+ else
+ i = scsi_cmd_ioctl(file, STp->disk, cmd_in, p);
if (i != -ENOTTY)
return i;
break;
}
+ if (!capable(CAP_SYS_ADMIN) &&
+ (cmd_in == SCSI_IOCTL_START_UNIT || cmd_in == SCSI_IOCTL_STOP_UNIT))
+ return -EPERM;
return scsi_ioctl(STp->device, cmd_in, p);
out:
up(&STp->lock);
return retval;
}
+
+#ifdef CONFIG_COMPAT
+static long st_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+ struct scsi_tape *STp = file->private_data;
+ struct scsi_device *sdev = STp->device;
+ int ret = -ENOIOCTLCMD;
+ if (sdev->host->hostt->compat_ioctl) {
+
+ ret = sdev->host->hostt->compat_ioctl(sdev, cmd, (void __user *)arg);
+
+ }
+ return ret;
+}
+#endif
+
\f
/* Try to allocate a new tape buffer. Calling function must not hold
.read = st_read,
.write = st_write,
.ioctl = st_ioctl,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = st_compat_ioctl,
+#endif
.open = st_open,
.flush = st_flush,
.release = st_release,
git://git.onelab.eu / linux-2.6.git / blobdiff