PR #2101 shows desktop.ini files on Desktop. I want to hide them.
- Add "ShowSuperHidden" setting to Explorer.
- Add SHCONTF_INCLUDESUPERHIDDEN flag.
- Support SHCONTF_INCLUDESUPERHIDDEN in Explorer.
CORE-10045
Add "Command Prompt here" menu item to the Right-click menu of normal folders and drives. Currently, this menu item doesn't work correctly because of the bug of pushd. CORE-12150
Triggered by a fix attempt by M.Harmstone in PR #1905.
- Introduce #defines and helper functions so as to initialize the
descriptors in a human-readable and tractable way, without magic values.
- Rework some comments.
- Document what the changes are in (Longhorn and) Vista+.
Data has been obtained through using the WinDbg command: dg 0x00 0xFF
(for example), that lists all the selectors from 0x00 to 0xFF included.
See https://docs.microsoft.com/en-us/windows-hardware/drivers/debugger/dg--display-selector-
for more details.
- Implement support for the "RDIMAGELENGTH" and "RDIMAGEOFFSET" boot
options. Fixes CORE-15432.
- Separate the initialization of the global gInitRamDiskBase /
gInitRamDiskSize variables from the FreeLdr command-line, and the
actual initialization of the internal variables of the RamDisk.
The latter are initialized via calls to RamDiskInitialize().
- Implement 'SeekRelative' mode in RamDiskSeek().
- Make RamDiskLoadVirtualFile() internal function that gets called by
RamDiskInitialize(), and we use the latter in the NT loader instead.
Basically it appeared that without this fix, the CPU was somehow residing
in an inconsistent state, that made it crash when a full 16-bit real-mode
to 32-bit protected mode transition occurred. (Encountered when trying
to load Linux, see problem description below.)
In that situation, Bochs reports that the CPU is in "compatibility mode".
The fix is based from information from Fig.1-6 "Operating Modes of the
AMD64 Architecture" (page 12) and Chapter 14 (pages 429-446) of the
"AMD64 Architecture Programmer’s Manual Volume 2: System Programming"
https://www.amd.com/system/files/TechDocs/24593.pdf
*** THE PROBLEM ***
When booting Linux using x86 FreeLdr everything goes well.
When trying to do the same using x64 FreeLdr, the Linux code (both the
boot sector, the setup sector and the main kernel contents) is all
correctly loaded and relocated in memory as in the x86 case. We then pass
control to the decompressing code that appears to succeed. However, once
it has finished and "Parsing ELF file..." step has been run, the next
step "Booting the kernel..." crashes with a CPU Triple-Fault.
This problem **DOES NOT HAPPEN** when booting from GRUB.
Log excerpt from Bochs:
<snip>
00089459736i[BIOS ] Booting from 07c0:0000
00089782775i[SER ] com1: FIFO enabled
00095994535i[BIOS ] int13_harddisk: function 41, unmapped device for ELDL=81
00095998517i[BIOS ] int13_harddisk: function 08, unmapped device for ELDL=81
00397139785i[BIOS ] KBD: unsupported int 16h function 03
00397143625i[BIOS ] *** int 15h function AX=e980, BX=0000 not yet supported!
00523008104e[CPU0 ] interrupt(long mode): vector must be within IDT table limits, IDT.limit = 0x0
00523008104e[CPU0 ] interrupt(long mode): vector must be within IDT table limits, IDT.limit = 0x0
00523008104i[CPU0 ] CPU is in compatibility mode (active)
00523008104i[CPU0 ] CS.mode = 32 bit
00523008104i[CPU0 ] SS.mode = 32 bit
00523008104i[CPU0 ] EFER = 0x00000500
00523008104i[CPU0 ] | RAX=00000000e0000011 RBX=0000000000000000
00523008104i[CPU0 ] | RCX=0000000000000000 RDX=0000000000000000
00523008104i[CPU0 ] | RSP=00000000004f8000 RBP=000000000082e003
00523008104i[CPU0 ] | RSI=0000000000099800 RDI=00000000c0611000
00523008104i[CPU0 ] | R8=0000000000109000 R9=0000000000009020
00523008104i[CPU0 ] | R10=00000000000007e3 R11=000000000000e958
00523008104i[CPU0 ] | R12=0000000000000000 R13=0000000000000000
00523008104i[CPU0 ] | R14=0000000000000000 R15=0000000000000000
00523008104i[CPU0 ] | IOPL=0 id vip vif ac vm RF nt of df if tf SF zf af PF cf
00523008104i[CPU0 ] | SEG sltr(index|ti|rpl) base limit G D
00523008104i[CPU0 ] | CS:0010( 0002| 0| 0) 00000000 ffffffff 1 1
00523008104i[CPU0 ] | DS:0018( 0003| 0| 0) 00000000 ffffffff 1 1
00523008104i[CPU0 ] | SS:0018( 0003| 0| 0) 00000000 ffffffff 1 1
00523008104i[CPU0 ] | ES:0018( 0003| 0| 0) 00000000 ffffffff 1 1
00523008104i[CPU0 ] | FS:0018( 0003| 0| 0) 00000000 ffffffff 1 1
00523008104i[CPU0 ] | GS:0018( 0003| 0| 0) 00000000 ffffffff 1 1
00523008104i[CPU0 ] | MSR_FS_BASE:0000000000000000
00523008104i[CPU0 ] | MSR_GS_BASE:0000000000000000
00523008104i[CPU0 ] | RIP=0000000000409327 (0000000000409327)
00523008104i[CPU0 ] | CR0=0xe0000011 CR2=0x0000000000409327
00523008104i[CPU0 ] | CR3=0x005b5000 CR4=0x000000a0
00523008104i[CPU0 ] 0x0000000000409327: (instruction unavailable) page not present
00523008104p[CPU0 ] >>PANIC<< exception(): 3rd (13) exception with no resolution
<snip>
- Introduce "Relocator16Boot()". So far its aim is just to correctly set
the CPU state (segments, registers, flags) to what is expected by a
given boot image before running it.
This function can be seen as the embryonic state of a future boot relocator
(see e.g. GRUB or SYSLINUX) that would also relocate the boot image at
the correct places. (Such feature is needed when boot images have to
be loaded in memory areas that cover where the boot loader is in memory.)
- Implement ChainLoadBiosBootSectorCode() around it.
- Replace BootOldLinuxKernel() and BootNewLinuxKernel() by a new
BootLinuxKernel() function (in assembly) that relocates the kernel
to a given position and then boot it, using Relocator16Boot().
Ideally the relocation should be done by a future boot relocator...
Implementation notes for Relocator16Boot():
===========================================
For setting the CPU state the function is based on a similar code as the
Int386() helper, namely it takes a pointer to REGS structure and pass
this information through the 32->16 bits call before setting the CPU state
in accordance.
New stack segment/pointer and code segment/pointer are also specified.
For passing these values through the 32->16 bits call the 16-bit BSS
memory offsets "BSS_CallbackReturn" and "BSS_RealModeEntry" (respectively)
are reused.
On Windows <= 2003 (and current ReactOS), this is the "InfName" value
in the "HKEY_LOCAL_MACHINE\CurrentControlSet\Control\BiosInfo\" key.
(The default file name found there is 'biosinfo.inf'.)
On Vista+, this is the "InfName" value in the
"HKEY_LOCAL_MACHINE\CurrentControlSet\Control\Errata\" key.
(The default file name found there is 'errata.inf'.)
For 1st-stage setup, the file is specified in the "InfName" value of
the "BiosInfo" section in the TXTSETUP.SIF file.
Co-authored-by: Hermès Bélusca-Maïto <hermes.belusca-maito@reactos.org>
Do not read the whole cluster chain for file on opening.
This removes restriction for opening files which span
within a large amount of clusters (>65k). That happened because
FrLdrTempAlloc cannot allocate more than about 256 KiB of memory.
Adjacent clusters for file are now read using one disk driver call.
Add localization for the file description of both XML and XSL file formats.
Please check for copypasta errors!
CORE-16390
Co-Authored-By: Stanislav Motylkov <x86corez@gmail.com>
According to the Advanced RISC Computing Specification v1.2, for partitions,
StartingAddress and EndingAddress are the start and end positions of the
partition in terms of byte offsets from the start of the disk.
CurrentAddress is the current offset into (i.e. relative to) the partition.
Fix also the FAT filesystem in accordance.
- FIXME fix: Retrieve the size of the disk in number of sectors in DiskOpen().
- Add extra validity checks in the DiskSeek() functions.
- Explicitly call PcDisk* functions in machpc.c and pcdisk.c, and
XboxDisk* functions in machxbox.c (the code in these files is not
called cross-platform).
CORE-16216 CORE-16248
- Modify DiskReportError() to use an internal "display counter", so that
imbricated DiskReportError(FALSE) ... DiskReportError(TRUE) can behave
as expected.
- Merge LoadAndBootDrive(), LoadAndBootPartition(),
LoadAndBootBootSector() into one LoadAndBootDevice() function + its
helpers (in progress...).
- "FrldrBootPath" -> "FrLdrBootPath";
- Get rid of GetFreeLoaderVersionString() and use FrLdrVersionString
directly instead;
- Rephrase some comments;
- Use RTL_NUMBER_OF();
- Reduce indent level in LoadOperatingSystem() and EditOperatingSystemEntry().
Bug fix:
- Fix DissectArcPath() for "ramdisk(0)" case.
- Move DiskStopFloppyMotor() calls into the implementations of
Boot(New)LinuxKernel() and Reboot() HW functions, and the explanation
comments in ChainLoadBiosBootSectorCode().
- Remove unneeded DiskStopFloppyMotor() dummies in ARM and PPC code.
- Use more adequate bitmask value to be sent to floppy's Digital Output
Register for shutting down its motor (based on OSDev & our floppy
controller driver).
- Add optional arguments BootDrive and BootPartition to
ChainLoadBiosBootSectorCode() so as not to modify explicitly the
FrldrBootDrive and FrldrBootPartition variables, that should remain
purely internal.
- Implement ChainLoadBiosBootSectorCode() for x64.
- Get rid of the machine-specific DiskGetBootPath(), and instead do its
job only once in the machine-specific InitializeBootDevices() (or in
MachInit() for PPC).
Cache the result of this operation into the globally-accessible
FrldrBootPath buffer. This avoids the unneeded calls to (Mach)DiskGetBootPath()
we used to do before.
Also remove the separate distinction between the PC and XBOX versions
of this functionality.
- Move the PC-specific DiskIsDriveRemovable() and DiskGetBootPath()
as well as the disk-IO-error functionality, back into the
corresponding PC-arch files.
- Simplify IniFileInitialize(), getting rid of IniOpenIniFile().
