newlib/winsup/cygwin/fhandler_floppy.cc

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/* fhandler_floppy.cc. See fhandler.h for a description of the
fhandler classes.
Copyright 1999, 2000, 2001, 2002 Red Hat, Inc.
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This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#include "winsup.h"
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#include <sys/termios.h>
#include <unistd.h>
#include <winioctl.h>
#include <asm/socket.h>
#include <cygwin/hdreg.h>
#include <cygwin/fs.h>
#include "security.h"
#include "fhandler.h"
#include "cygerrno.h"
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/**********************************************************************/
/* fhandler_dev_floppy */
int
fhandler_dev_floppy::is_eom (int win_error)
{
int ret = (win_error == ERROR_INVALID_PARAMETER);
if (ret)
debug_printf ("end of medium");
return ret;
}
int
fhandler_dev_floppy::is_eof (int)
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{
int ret = 0;
if (ret)
debug_printf ("end of file");
return ret;
}
fhandler_dev_floppy::fhandler_dev_floppy (int unit) : fhandler_dev_raw (FH_FLOPPY, unit)
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{
}
int
* dcrt0.cc (dll_crt0_1): Don't close hexec_proc if it is NULL. * fork.cc (vfork): Add debugging statements. * path.cc (get_device_number): Make static. Rewrite to inspect both unix and windows paths. (get_raw_device_number): Just check for parts of raw device that we care about. (get_devn): New function, pulled from get_device_number. (win32_device_name): Accomodate arg changes to get_device_number. (mount_info::get_device_number): Call get_device_number on translated Windows path. * spawn.cc (spawn_guts): Don't treat P_VFORK differently from P_NOWAIT. Add handle to child's shared region to child so that it will be preserved if the parent goes away. * fhandler.h: Throughout, simplify to one open method for all fhandler classes, requiring a path_conv first element. * fhandler.cc (fhandler_base::open): Remove obsolete method. Generalize to require path_conv * as first argument. (fhandler_disk_file::open): Remove obsolete method. (fhandler_disk_file::open): Use path_conv pointer rather than reference. * fhandler_clipboard.cc (fhandler_dev_clipboard::dup): Use new open method. (fhandler_dev_clipboard::open): Accomodate new argument for open methods. * fhandler_console.cc (fhandler_console::open): Ditto. (fhandler_console::dup): Use new open method. (fhandler_console::fixup_after_fork): Ditto. (fhandler_console::fixup_after_exec): Ditto. * fhandler_dsp.cc (fhandler_dev_dsp::open): Accomodate new argument for open methods. * fhandler_floppy.cc (fhandler_dev_floppy::open): Ditto. * fhandler_mem.cc (fhandler_dev_mem::open): Ditto. * fhandler_random (fhandler_dev_random::open): Ditto. * fhandler_raw.cc (fhandler_dev_raw::open): Ditto. * fhandler_serial.cc (fhandler_serial::open): Ditto. * fhandler_tape.cc (fhandler_dev_tape::open): Ditto. * fhandler_tty.cc (fhandler_tty_slave::open): Ditto. (fhandler_pty_master::open): Ditto. * fhandler_windows.cc (fhandler_windows::open): Ditto. * fhandler_zero.cc (fhandler_dev_zero::open): Ditto. * fhandler_socket.cc (fhandler_socket::set_connect_secret): Accomodate new argument for open methods. * syscalls.cc (_open): Ditto. (stat_worker): Ditto.
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fhandler_dev_floppy::open (path_conv *real_path, int flags, mode_t)
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{
/* The correct size of the buffer would be 512 bytes,
* which is the atomic size, supported by WinNT.
* Unfortunately, the performance is worse than
* access to file system on same device!
* Setting buffer size to a relatively big value
* increases performance by means.
* The new ioctl call with 'rdevio.h' header file
* supports changing this value.
*
* Let's be smart: Let's take a multiplier of typical tar
* and cpio buffer sizes by default!
*/
devbufsiz = 61440L; /* 512L; */
* dcrt0.cc (dll_crt0_1): Don't close hexec_proc if it is NULL. * fork.cc (vfork): Add debugging statements. * path.cc (get_device_number): Make static. Rewrite to inspect both unix and windows paths. (get_raw_device_number): Just check for parts of raw device that we care about. (get_devn): New function, pulled from get_device_number. (win32_device_name): Accomodate arg changes to get_device_number. (mount_info::get_device_number): Call get_device_number on translated Windows path. * spawn.cc (spawn_guts): Don't treat P_VFORK differently from P_NOWAIT. Add handle to child's shared region to child so that it will be preserved if the parent goes away. * fhandler.h: Throughout, simplify to one open method for all fhandler classes, requiring a path_conv first element. * fhandler.cc (fhandler_base::open): Remove obsolete method. Generalize to require path_conv * as first argument. (fhandler_disk_file::open): Remove obsolete method. (fhandler_disk_file::open): Use path_conv pointer rather than reference. * fhandler_clipboard.cc (fhandler_dev_clipboard::dup): Use new open method. (fhandler_dev_clipboard::open): Accomodate new argument for open methods. * fhandler_console.cc (fhandler_console::open): Ditto. (fhandler_console::dup): Use new open method. (fhandler_console::fixup_after_fork): Ditto. (fhandler_console::fixup_after_exec): Ditto. * fhandler_dsp.cc (fhandler_dev_dsp::open): Accomodate new argument for open methods. * fhandler_floppy.cc (fhandler_dev_floppy::open): Ditto. * fhandler_mem.cc (fhandler_dev_mem::open): Ditto. * fhandler_random (fhandler_dev_random::open): Ditto. * fhandler_raw.cc (fhandler_dev_raw::open): Ditto. * fhandler_serial.cc (fhandler_serial::open): Ditto. * fhandler_tape.cc (fhandler_dev_tape::open): Ditto. * fhandler_tty.cc (fhandler_tty_slave::open): Ditto. (fhandler_pty_master::open): Ditto. * fhandler_windows.cc (fhandler_windows::open): Ditto. * fhandler_zero.cc (fhandler_dev_zero::open): Ditto. * fhandler_socket.cc (fhandler_socket::set_connect_secret): Accomodate new argument for open methods. * syscalls.cc (_open): Ditto. (stat_worker): Ditto.
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return fhandler_dev_raw::open (real_path, flags);
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}
int
fhandler_dev_floppy::close (void)
{
int ret;
ret = writebuf ();
if (ret)
{
fhandler_dev_raw::close ();
return ret;
}
return fhandler_dev_raw::close ();
}
_off64_t
fhandler_dev_floppy::lseek (_off64_t offset, int whence)
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{
int ret;
char buf[512];
_off64_t drive_size = 0;
_off64_t lloffset = offset;
_off64_t current_position;
_off64_t sector_aligned_offset;
_off64_t bytes_left;
DWORD low;
LONG high = 0;
DISK_GEOMETRY di;
PARTITION_INFORMATION pi;
DWORD bytes_read;
if (!DeviceIoControl (get_handle (),
IOCTL_DISK_GET_DRIVE_GEOMETRY,
NULL, 0,
&di, sizeof (di),
&bytes_read, NULL))
{
__seterrno ();
return -1;
}
debug_printf ("disk geometry: (%ld cyl)*(%ld trk)*(%ld sec)*(%ld bps)",
di.Cylinders.LowPart,
di.TracksPerCylinder,
di.SectorsPerTrack,
di.BytesPerSector);
if (DeviceIoControl (get_handle (),
IOCTL_DISK_GET_PARTITION_INFO,
NULL, 0,
&pi, sizeof (pi),
&bytes_read, NULL))
{
debug_printf ("partition info: %ld (%ld)",
pi.StartingOffset.LowPart,
pi.PartitionLength.LowPart);
* cygwin.din (fstat64): New symbol. (ftruncate64): Ditto. (lseek64): Ditto. (lstat64): Ditto. (mmap64): Ditto. (seekdir64): Ditto. (stat64): Ditto. (telldir64): Ditto. (truncate64): Ditto. * dir.cc (telldir64): New function. (telldir): Call telldir64(). (seekdir64): New function. (seekdir): Call seekdir64(). * fhandler.h: Redefine all methods using __off32_t to use __off64_t. * fhandler.cc: Use __off64_t and struct __stat64 throughout. * fhandler_clipboard.cc: Ditto. * fhandler_disk_file.cc: Ditto. * fhandler_dsp.cc: Ditto. * fhandler_floppy.cc: Ditto. * fhandler_mem.cc: Ditto. * fhandler_random.cc: Ditto. * fhandler_socket.cc: Ditto. * fhandler_tape.cc: Ditto. * fhandler_zero.cc: Ditto. * pipe.cc: Ditto. * glob.c: Ditto, call lstat64 and stat64 in Cygwin. * mmap.cc: Use __off64_t throughout. (mmap64): New function. * sec_acl.cc (acl_worker): Use struct __stat64, call stat64 and lstat64. * syscalls.cc (lseek64): New function. (stat64_to_stat32): Ditto. (fstat64): Ditto. (stat64): Ditto. (lstat64): Ditto. (ftruncate64): Ditto. (truncate64): Ditto. (_fstat): Call fstat64. (_stat): Call stat64. (cygwin_lstat): Rename to avoid declaration problem. Call lstat64. (stat_worker): Use struct __stat64. (access): Ditto. (ftruncate): Call ftruncate64. (truncate): Call truncate64. * wincap.cc: Set flag has_64bit_file_access appropriately. * wincap.h: Add flag has_64bit_file_access. * winsup.h (ILLEGAL_SEEK): Define as __off64_t. (stat_dev): Declare using struct __stat64. (stat_worker): Ditto. * include/cygwin/stat.h (struct __stat32): Define if compiling Cygwin. (struct __stat64): Ditto. (struct stat): Revert definition with explicitly sized datatypes. Eliminate sized field names. * include/cygwin/types.h (blksize_t): New type. (__blkcnt32_t): Ditto. (__blkcnt64_t): Ditto. (blkcnt_t): Ditto.
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drive_size = pi.PartitionLength.QuadPart;
}
else
{
* cygwin.din (fstat64): New symbol. (ftruncate64): Ditto. (lseek64): Ditto. (lstat64): Ditto. (mmap64): Ditto. (seekdir64): Ditto. (stat64): Ditto. (telldir64): Ditto. (truncate64): Ditto. * dir.cc (telldir64): New function. (telldir): Call telldir64(). (seekdir64): New function. (seekdir): Call seekdir64(). * fhandler.h: Redefine all methods using __off32_t to use __off64_t. * fhandler.cc: Use __off64_t and struct __stat64 throughout. * fhandler_clipboard.cc: Ditto. * fhandler_disk_file.cc: Ditto. * fhandler_dsp.cc: Ditto. * fhandler_floppy.cc: Ditto. * fhandler_mem.cc: Ditto. * fhandler_random.cc: Ditto. * fhandler_socket.cc: Ditto. * fhandler_tape.cc: Ditto. * fhandler_zero.cc: Ditto. * pipe.cc: Ditto. * glob.c: Ditto, call lstat64 and stat64 in Cygwin. * mmap.cc: Use __off64_t throughout. (mmap64): New function. * sec_acl.cc (acl_worker): Use struct __stat64, call stat64 and lstat64. * syscalls.cc (lseek64): New function. (stat64_to_stat32): Ditto. (fstat64): Ditto. (stat64): Ditto. (lstat64): Ditto. (ftruncate64): Ditto. (truncate64): Ditto. (_fstat): Call fstat64. (_stat): Call stat64. (cygwin_lstat): Rename to avoid declaration problem. Call lstat64. (stat_worker): Use struct __stat64. (access): Ditto. (ftruncate): Call ftruncate64. (truncate): Call truncate64. * wincap.cc: Set flag has_64bit_file_access appropriately. * wincap.h: Add flag has_64bit_file_access. * winsup.h (ILLEGAL_SEEK): Define as __off64_t. (stat_dev): Declare using struct __stat64. (stat_worker): Ditto. * include/cygwin/stat.h (struct __stat32): Define if compiling Cygwin. (struct __stat64): Ditto. (struct stat): Revert definition with explicitly sized datatypes. Eliminate sized field names. * include/cygwin/types.h (blksize_t): New type. (__blkcnt32_t): Ditto. (__blkcnt64_t): Ditto. (blkcnt_t): Ditto.
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drive_size = di.Cylinders.QuadPart * di.TracksPerCylinder *
di.SectorsPerTrack * di.BytesPerSector;
}
debug_printf ("drive size: %ld", drive_size);
if (whence == SEEK_END && drive_size > 0)
{
lloffset = offset + drive_size;
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whence = SEEK_SET;
}
if (whence == SEEK_CUR)
{
low = SetFilePointer (get_handle (), 0, &high, FILE_CURRENT);
if (low == INVALID_SET_FILE_POINTER && GetLastError ())
{
__seterrno ();
return -1;
}
current_position = low + ((_off64_t) high << 32);
if (is_writing)
current_position += devbufend - devbufstart;
else
current_position -= devbufend - devbufstart;
lloffset += current_position;
whence = SEEK_SET;
}
if (lloffset < 0 ||
drive_size > 0 && lloffset > drive_size)
{
set_errno (EINVAL);
return -1;
}
/* FIXME: sector can possibly be not 512 bytes long */
* cygwin.din (fstat64): New symbol. (ftruncate64): Ditto. (lseek64): Ditto. (lstat64): Ditto. (mmap64): Ditto. (seekdir64): Ditto. (stat64): Ditto. (telldir64): Ditto. (truncate64): Ditto. * dir.cc (telldir64): New function. (telldir): Call telldir64(). (seekdir64): New function. (seekdir): Call seekdir64(). * fhandler.h: Redefine all methods using __off32_t to use __off64_t. * fhandler.cc: Use __off64_t and struct __stat64 throughout. * fhandler_clipboard.cc: Ditto. * fhandler_disk_file.cc: Ditto. * fhandler_dsp.cc: Ditto. * fhandler_floppy.cc: Ditto. * fhandler_mem.cc: Ditto. * fhandler_random.cc: Ditto. * fhandler_socket.cc: Ditto. * fhandler_tape.cc: Ditto. * fhandler_zero.cc: Ditto. * pipe.cc: Ditto. * glob.c: Ditto, call lstat64 and stat64 in Cygwin. * mmap.cc: Use __off64_t throughout. (mmap64): New function. * sec_acl.cc (acl_worker): Use struct __stat64, call stat64 and lstat64. * syscalls.cc (lseek64): New function. (stat64_to_stat32): Ditto. (fstat64): Ditto. (stat64): Ditto. (lstat64): Ditto. (ftruncate64): Ditto. (truncate64): Ditto. (_fstat): Call fstat64. (_stat): Call stat64. (cygwin_lstat): Rename to avoid declaration problem. Call lstat64. (stat_worker): Use struct __stat64. (access): Ditto. (ftruncate): Call ftruncate64. (truncate): Call truncate64. * wincap.cc: Set flag has_64bit_file_access appropriately. * wincap.h: Add flag has_64bit_file_access. * winsup.h (ILLEGAL_SEEK): Define as __off64_t. (stat_dev): Declare using struct __stat64. (stat_worker): Ditto. * include/cygwin/stat.h (struct __stat32): Define if compiling Cygwin. (struct __stat64): Ditto. (struct stat): Revert definition with explicitly sized datatypes. Eliminate sized field names. * include/cygwin/types.h (blksize_t): New type. (__blkcnt32_t): Ditto. (__blkcnt64_t): Ditto. (blkcnt_t): Ditto.
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sector_aligned_offset = (lloffset / 512) * 512;
bytes_left = lloffset - sector_aligned_offset;
if (whence == SEEK_SET)
{
/* Invalidate buffer. */
ret = writebuf ();
if (ret)
return ret;
devbufstart = devbufend = 0;
* cygwin.din (fstat64): New symbol. (ftruncate64): Ditto. (lseek64): Ditto. (lstat64): Ditto. (mmap64): Ditto. (seekdir64): Ditto. (stat64): Ditto. (telldir64): Ditto. (truncate64): Ditto. * dir.cc (telldir64): New function. (telldir): Call telldir64(). (seekdir64): New function. (seekdir): Call seekdir64(). * fhandler.h: Redefine all methods using __off32_t to use __off64_t. * fhandler.cc: Use __off64_t and struct __stat64 throughout. * fhandler_clipboard.cc: Ditto. * fhandler_disk_file.cc: Ditto. * fhandler_dsp.cc: Ditto. * fhandler_floppy.cc: Ditto. * fhandler_mem.cc: Ditto. * fhandler_random.cc: Ditto. * fhandler_socket.cc: Ditto. * fhandler_tape.cc: Ditto. * fhandler_zero.cc: Ditto. * pipe.cc: Ditto. * glob.c: Ditto, call lstat64 and stat64 in Cygwin. * mmap.cc: Use __off64_t throughout. (mmap64): New function. * sec_acl.cc (acl_worker): Use struct __stat64, call stat64 and lstat64. * syscalls.cc (lseek64): New function. (stat64_to_stat32): Ditto. (fstat64): Ditto. (stat64): Ditto. (lstat64): Ditto. (ftruncate64): Ditto. (truncate64): Ditto. (_fstat): Call fstat64. (_stat): Call stat64. (cygwin_lstat): Rename to avoid declaration problem. Call lstat64. (stat_worker): Use struct __stat64. (access): Ditto. (ftruncate): Call ftruncate64. (truncate): Call truncate64. * wincap.cc: Set flag has_64bit_file_access appropriately. * wincap.h: Add flag has_64bit_file_access. * winsup.h (ILLEGAL_SEEK): Define as __off64_t. (stat_dev): Declare using struct __stat64. (stat_worker): Ditto. * include/cygwin/stat.h (struct __stat32): Define if compiling Cygwin. (struct __stat64): Ditto. (struct stat): Revert definition with explicitly sized datatypes. Eliminate sized field names. * include/cygwin/types.h (blksize_t): New type. (__blkcnt32_t): Ditto. (__blkcnt64_t): Ditto. (blkcnt_t): Ditto.
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low = sector_aligned_offset & 0xffffffff;
high = sector_aligned_offset >> 32;
if (SetFilePointer (get_handle (), low, &high, FILE_BEGIN)
== INVALID_SET_FILE_POINTER && GetLastError ())
{
__seterrno ();
return -1;
}
size_t len = bytes_left;
raw_read (buf, len);
return sector_aligned_offset + bytes_left;
}
set_errno (EINVAL);
return -1;
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}
int
fhandler_dev_floppy::ioctl (unsigned int cmd, void *buf)
{
DISK_GEOMETRY di;
PARTITION_INFORMATION pi;
DWORD bytes_read;
_off64_t drive_size = 0;
_off64_t start = 0;
switch (cmd)
{
case HDIO_GETGEO:
{
debug_printf ("HDIO_GETGEO");
if (!DeviceIoControl (get_handle (),
IOCTL_DISK_GET_DRIVE_GEOMETRY,
NULL, 0,
&di, sizeof (di),
&bytes_read, NULL))
{
__seterrno ();
return -1;
}
debug_printf ("disk geometry: (%ld cyl)*(%ld trk)*(%ld sec)*(%ld bps)",
di.Cylinders.LowPart,
di.TracksPerCylinder,
di.SectorsPerTrack,
di.BytesPerSector);
if (DeviceIoControl (get_handle (),
IOCTL_DISK_GET_PARTITION_INFO,
NULL, 0,
&pi, sizeof (pi),
&bytes_read, NULL))
{
debug_printf ("partition info: %ld (%ld)",
pi.StartingOffset.LowPart,
pi.PartitionLength.LowPart);
start = pi.StartingOffset.QuadPart >> 9ULL;
}
struct hd_geometry *geo = (struct hd_geometry *) buf;
geo->heads = di.TracksPerCylinder;
geo->sectors = di.SectorsPerTrack;
geo->cylinders = di.Cylinders.LowPart;
geo->start = start;
return 0;
}
case BLKGETSIZE:
case BLKGETSIZE64:
{
debug_printf ("BLKGETSIZE");
if (!DeviceIoControl (get_handle (),
IOCTL_DISK_GET_DRIVE_GEOMETRY,
NULL, 0,
&di, sizeof (di),
&bytes_read, NULL))
{
__seterrno ();
return -1;
}
debug_printf ("disk geometry: (%ld cyl)*(%ld trk)*(%ld sec)*(%ld bps)",
di.Cylinders.LowPart,
di.TracksPerCylinder,
di.SectorsPerTrack,
di.BytesPerSector);
if (DeviceIoControl (get_handle (),
IOCTL_DISK_GET_PARTITION_INFO,
NULL, 0,
&pi, sizeof (pi),
&bytes_read, NULL))
{
debug_printf ("partition info: %ld (%ld)",
pi.StartingOffset.LowPart,
pi.PartitionLength.LowPart);
drive_size = pi.PartitionLength.QuadPart;
}
else
{
drive_size = di.Cylinders.QuadPart * di.TracksPerCylinder *
di.SectorsPerTrack * di.BytesPerSector;
}
if (cmd == BLKGETSIZE)
*(long *)buf = drive_size >> 9UL;
else
*(_off64_t *)buf = drive_size;
return 0;
}
case BLKRRPART:
{
debug_printf ("BLKRRPART");
if (!DeviceIoControl (get_handle (),
IOCTL_DISK_UPDATE_DRIVE_SIZE,
NULL, 0,
&di, sizeof (di),
&bytes_read, NULL))
{
__seterrno ();
return -1;
}
return 0;
}
case BLKSSZGET:
{
debug_printf ("BLKSSZGET");
if (!DeviceIoControl (get_handle (),
IOCTL_DISK_GET_DRIVE_GEOMETRY,
NULL, 0,
&di, sizeof (di),
&bytes_read, NULL))
{
__seterrno ();
return -1;
}
debug_printf ("disk geometry: (%ld cyl)*(%ld trk)*(%ld sec)*(%ld bps)",
di.Cylinders.LowPart,
di.TracksPerCylinder,
di.SectorsPerTrack,
di.BytesPerSector);
*(int *)buf = di.BytesPerSector;
return 0;
}
default:
return fhandler_dev_raw::ioctl (cmd, buf);
}
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}