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-rw-r--r--winsup/cygwin/fhandler_tape.cc290
1 files changed, 147 insertions, 143 deletions
diff --git a/winsup/cygwin/fhandler_tape.cc b/winsup/cygwin/fhandler_tape.cc
index 91d5b12aa..5b09e4262 100644
--- a/winsup/cygwin/fhandler_tape.cc
+++ b/winsup/cygwin/fhandler_tape.cc
@@ -2,7 +2,7 @@
classes.
Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
- 2010, 2011, 2012, 2013 Red Hat, Inc.
+ 2010, 2011, 2012, 2013, 2014 Red Hat, Inc.
This file is part of Cygwin.
@@ -977,159 +977,163 @@ mtinfo_drive::set_options (HANDLE mt, int32_t options)
int
mtinfo_drive::ioctl (HANDLE mt, unsigned int cmd, void *buf)
{
- myfault efault;
- if (efault.faulted ())
- return ERROR_NOACCESS;
- if (cmd == MTIOCTOP)
+ __try
{
- struct mtop *op = (struct mtop *) buf;
- if (lasterr == ERROR_BUS_RESET)
+ if (cmd == MTIOCTOP)
{
- /* If a bus reset occurs, block further access to this device
- until the user rewinds, unloads or in any other way tries
- to maintain a well-known tape position. */
- if (op->mt_op != MTREW && op->mt_op != MTOFFL
- && op->mt_op != MTRETEN && op->mt_op != MTERASE
- && op->mt_op != MTSEEK && op->mt_op != MTEOM)
- return ERROR_BUS_RESET;
- /* Try to maintain last lock state after bus reset. */
- if (lock >= auto_locked && PrepareTape (mt, TAPE_LOCK, FALSE))
+ struct mtop *op = (struct mtop *) buf;
+ if (lasterr == ERROR_BUS_RESET)
{
- debug_printf ("Couldn't relock drive after bus reset.");
- lock = unlocked;
+ /* If a bus reset occurs, block further access to this device
+ until the user rewinds, unloads or in any other way tries
+ to maintain a well-known tape position. */
+ if (op->mt_op != MTREW && op->mt_op != MTOFFL
+ && op->mt_op != MTRETEN && op->mt_op != MTERASE
+ && op->mt_op != MTSEEK && op->mt_op != MTEOM)
+ return ERROR_BUS_RESET;
+ /* Try to maintain last lock state after bus reset. */
+ if (lock >= auto_locked && PrepareTape (mt, TAPE_LOCK, FALSE))
+ {
+ debug_printf ("Couldn't relock drive after bus reset.");
+ lock = unlocked;
+ }
}
- }
- switch (op->mt_op)
- {
- case MTRESET:
- break;
- case MTFSF:
- set_pos (mt, TAPE_SPACE_FILEMARKS, op->mt_count, false);
- break;
- case MTBSF:
- set_pos (mt, TAPE_SPACE_FILEMARKS, -op->mt_count, false);
- break;
- case MTFSR:
- set_pos (mt, TAPE_SPACE_RELATIVE_BLOCKS, op->mt_count, false);
- break;
- case MTBSR:
- set_pos (mt, TAPE_SPACE_RELATIVE_BLOCKS, -op->mt_count, false);
- break;
- case MTWEOF:
- write_marks (mt, TAPE_FILEMARKS, op->mt_count);
- break;
- case MTREW:
- set_pos (mt, TAPE_REWIND, 0, false);
- break;
- case MTOFFL:
- case MTUNLOAD:
- prepare (mt, TAPE_UNLOAD);
- break;
- case MTNOP:
- lasterr = 0;
- break;
- case MTRETEN:
- if (!get_feature (TAPE_DRIVE_TENSION))
- lasterr = ERROR_INVALID_PARAMETER;
- else if (!set_pos (mt, TAPE_REWIND, 0, false))
- prepare (mt, TAPE_TENSION);
- break;
- case MTBSFM:
- set_pos (mt, TAPE_SPACE_FILEMARKS, -op->mt_count, true);
- break;
- case MTFSFM:
- set_pos (mt, TAPE_SPACE_FILEMARKS, op->mt_count, true);
- break;
- case MTEOM:
- if (fast_eom () && get_feature (TAPE_DRIVE_END_OF_DATA))
- set_pos (mt, TAPE_SPACE_END_OF_DATA, 0, false);
- else
- set_pos (mt, TAPE_SPACE_FILEMARKS, 32767, false);
- break;
- case MTERASE:
- erase (mt, TAPE_ERASE_LONG);
- break;
- case MTRAS1:
- case MTRAS2:
- case MTRAS3:
- lasterr = ERROR_INVALID_PARAMETER;
- break;
- case MTSETBLK:
- if (!get_feature (TAPE_DRIVE_SET_BLOCK_SIZE))
- {
- lasterr = ERROR_INVALID_PARAMETER;
+ switch (op->mt_op)
+ {
+ case MTRESET:
break;
- }
- if ((DWORD) op->mt_count == mp ()->BlockSize)
- {
- /* Nothing has changed. */
+ case MTFSF:
+ set_pos (mt, TAPE_SPACE_FILEMARKS, op->mt_count, false);
+ break;
+ case MTBSF:
+ set_pos (mt, TAPE_SPACE_FILEMARKS, -op->mt_count, false);
+ break;
+ case MTFSR:
+ set_pos (mt, TAPE_SPACE_RELATIVE_BLOCKS, op->mt_count, false);
+ break;
+ case MTBSR:
+ set_pos (mt, TAPE_SPACE_RELATIVE_BLOCKS, -op->mt_count, false);
+ break;
+ case MTWEOF:
+ write_marks (mt, TAPE_FILEMARKS, op->mt_count);
+ break;
+ case MTREW:
+ set_pos (mt, TAPE_REWIND, 0, false);
+ break;
+ case MTOFFL:
+ case MTUNLOAD:
+ prepare (mt, TAPE_UNLOAD);
+ break;
+ case MTNOP:
lasterr = 0;
break;
- }
- if ((op->mt_count == 0 && !get_feature (TAPE_DRIVE_VARIABLE_BLOCK))
- || (op->mt_count > 0
- && ((DWORD) op->mt_count < dp ()->MinimumBlockSize
- || (DWORD) op->mt_count > dp ()->MaximumBlockSize)))
- {
+ case MTRETEN:
+ if (!get_feature (TAPE_DRIVE_TENSION))
+ lasterr = ERROR_INVALID_PARAMETER;
+ else if (!set_pos (mt, TAPE_REWIND, 0, false))
+ prepare (mt, TAPE_TENSION);
+ break;
+ case MTBSFM:
+ set_pos (mt, TAPE_SPACE_FILEMARKS, -op->mt_count, true);
+ break;
+ case MTFSFM:
+ set_pos (mt, TAPE_SPACE_FILEMARKS, op->mt_count, true);
+ break;
+ case MTEOM:
+ if (fast_eom () && get_feature (TAPE_DRIVE_END_OF_DATA))
+ set_pos (mt, TAPE_SPACE_END_OF_DATA, 0, false);
+ else
+ set_pos (mt, TAPE_SPACE_FILEMARKS, 32767, false);
+ break;
+ case MTERASE:
+ erase (mt, TAPE_ERASE_LONG);
+ break;
+ case MTRAS1:
+ case MTRAS2:
+ case MTRAS3:
lasterr = ERROR_INVALID_PARAMETER;
break;
- }
- if (set_blocksize (mt, op->mt_count)
- && lasterr == ERROR_INVALID_FUNCTION)
- lasterr = ERROR_INVALID_BLOCK_LENGTH;
- break;
- case MTSEEK:
- if (get_feature (TAPE_DRIVE_LOGICAL_BLK))
- set_pos (mt, TAPE_LOGICAL_BLOCK, op->mt_count, false);
- else if (!get_pos (mt))
- set_pos (mt, TAPE_SPACE_RELATIVE_BLOCKS,
- op->mt_count - block, false);
- break;
- case MTTELL:
- if (!get_pos (mt))
- op->mt_count = (int) block;
- break;
- case MTFSS:
- set_pos (mt, TAPE_SPACE_SETMARKS, op->mt_count, false);
- break;
- case MTBSS:
- set_pos (mt, TAPE_SPACE_SETMARKS, -op->mt_count, false);
- break;
- case MTWSM:
- write_marks (mt, TAPE_SETMARKS, op->mt_count);
- break;
- case MTLOCK:
- prepare (mt, TAPE_LOCK);
- break;
- case MTUNLOCK:
- prepare (mt, TAPE_UNLOCK);
- break;
- case MTLOAD:
- prepare (mt, TAPE_LOAD);
- break;
- case MTCOMPRESSION:
- set_compression (mt, op->mt_count);
- break;
- case MTSETPART:
- set_partition (mt, op->mt_count);
- break;
- case MTMKPART:
- create_partitions (mt, op->mt_count);
- break;
- case MTSETDRVBUFFER:
- set_options (mt, op->mt_count);
- break;
- case MTSETDENSITY:
- default:
- lasterr = ERROR_INVALID_PARAMETER;
- break;
+ case MTSETBLK:
+ if (!get_feature (TAPE_DRIVE_SET_BLOCK_SIZE))
+ {
+ lasterr = ERROR_INVALID_PARAMETER;
+ break;
+ }
+ if ((DWORD) op->mt_count == mp ()->BlockSize)
+ {
+ /* Nothing has changed. */
+ lasterr = 0;
+ break;
+ }
+ if ((op->mt_count == 0 && !get_feature (TAPE_DRIVE_VARIABLE_BLOCK))
+ || (op->mt_count > 0
+ && ((DWORD) op->mt_count < dp ()->MinimumBlockSize
+ || (DWORD) op->mt_count > dp ()->MaximumBlockSize)))
+ {
+ lasterr = ERROR_INVALID_PARAMETER;
+ break;
+ }
+ if (set_blocksize (mt, op->mt_count)
+ && lasterr == ERROR_INVALID_FUNCTION)
+ lasterr = ERROR_INVALID_BLOCK_LENGTH;
+ break;
+ case MTSEEK:
+ if (get_feature (TAPE_DRIVE_LOGICAL_BLK))
+ set_pos (mt, TAPE_LOGICAL_BLOCK, op->mt_count, false);
+ else if (!get_pos (mt))
+ set_pos (mt, TAPE_SPACE_RELATIVE_BLOCKS,
+ op->mt_count - block, false);
+ break;
+ case MTTELL:
+ if (!get_pos (mt))
+ op->mt_count = (int) block;
+ break;
+ case MTFSS:
+ set_pos (mt, TAPE_SPACE_SETMARKS, op->mt_count, false);
+ break;
+ case MTBSS:
+ set_pos (mt, TAPE_SPACE_SETMARKS, -op->mt_count, false);
+ break;
+ case MTWSM:
+ write_marks (mt, TAPE_SETMARKS, op->mt_count);
+ break;
+ case MTLOCK:
+ prepare (mt, TAPE_LOCK);
+ break;
+ case MTUNLOCK:
+ prepare (mt, TAPE_UNLOCK);
+ break;
+ case MTLOAD:
+ prepare (mt, TAPE_LOAD);
+ break;
+ case MTCOMPRESSION:
+ set_compression (mt, op->mt_count);
+ break;
+ case MTSETPART:
+ set_partition (mt, op->mt_count);
+ break;
+ case MTMKPART:
+ create_partitions (mt, op->mt_count);
+ break;
+ case MTSETDRVBUFFER:
+ set_options (mt, op->mt_count);
+ break;
+ case MTSETDENSITY:
+ default:
+ lasterr = ERROR_INVALID_PARAMETER;
+ break;
+ }
}
+ else if (cmd == MTIOCGET)
+ get_status (mt, (struct mtget *) buf);
+ else if (cmd == MTIOCPOS && !get_pos (mt))
+ ((struct mtpos *) buf)->mt_blkno = (long) block;
}
- else if (cmd == MTIOCGET)
- get_status (mt, (struct mtget *) buf);
- else if (cmd == MTIOCPOS && !get_pos (mt))
- ((struct mtpos *) buf)->mt_blkno = (long) block;
-
+ __except (NO_ERROR)
+ {
+ lasterr = ERROR_NOACCESS;
+ }
+ __endtry
return lasterr;
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-05-06 02:34:50 +0000