Andrew Hamilton [Sun, 4 Aug 2024 16:32:51 +0000 (11:32 -0500)]
docs: Document all GRUB modules
Add documentation for all GRUB modules contained in the source code tree.
When possible, cross-references to additional detail on commands was added
from their corresponding module documentation. In addition, documentation
for the file command was added.
Signed-off-by: Andrew Hamilton <adhamilt@gmail.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Michael Chang [Wed, 17 Jul 2024 06:46:46 +0000 (14:46 +0800)]
commands/bli: Fix crash in get_part_uuid()
The get_part_uuid() function made an assumption that the target GRUB
device is a partition device and accessed device->disk->partition
without checking for NULL. There are four situations where this
assumption is problematic:
1. The device is a net device instead of a disk.
2. The device is an abstraction device, like LVM, RAID, or CRYPTO, which
is mostly logical "disk" ((lvmid/<UUID>) and so on).
3. Firmware RAID may present the ESP to GRUB as an EFI disk (hd0) device
if it is contained within a Linux software RAID.
4. When booting from a CD-ROM, the ESP is a VFAT image indexed by the El
Torito boot catalog. The boot device is set to (cd0), corresponding
to the CD-ROM image mounted as an ISO 9660 filesystem.
As a result, get_part_uuid() could lead to a NULL pointer dereference
and trigger a synchronous exception during boot if the ESP falls into
one of these categories. This patch fixes the problem by adding the
necessary checks to handle cases where the ESP is not a partition device.
Additionally, to avoid disrupting the boot process, this patch relaxes
the severity of the errors in this context to non-critical. Errors will
be logged, but they will not prevent the boot process from continuing.
Fixes: e0fa7dc84 (bli: Add a module for the Boot Loader Interface) Signed-off-by: Michael Chang <mchang@suse.com> Reviewed-By: Oliver Steffen <osteffen@redhat.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Thomas Schmitt [Mon, 17 Jun 2024 19:03:00 +0000 (21:03 +0200)]
util/grub-mkrescue: Check existence of option arguments
As reported by Victoriia Egorova in bug 65880, grub-mkrescue does not
verify that the expected argument of an option like -d or -k does really
exist in argv. So, check the loop counter before incrementing it inside
the loop which copies argv to argp_argv. Issue an error message similar
to what older versions of grub-mkrescue did with a missing argument,
e.g. 2.02.
Fixes: https://savannah.gnu.org/bugs/index.php?65880 Signed-off-by: Thomas Schmitt <scdbackup@gmx.net> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Tobias Heider [Mon, 17 Jun 2024 15:10:26 +0000 (17:10 +0200)]
loader/efi/fdt: Add fdtdump command to access device tree
The fdtdump command allows dumping arbitrary device tree properties
and saving them to a variable similar to the smbios command.
This is useful in scripts where further actions such as selecting
a kernel or loading another device tree depend on the compatible
or model values of the device tree provided by the firmware.
For now only the root level properties of the dtb are exposed.
Signed-off-by: Tobias Heider <tobias.heider@canonical.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Mate Kukri [Wed, 12 Jun 2024 15:14:21 +0000 (16:14 +0100)]
kern/efi/mm: Detect calls to grub_efi_drop_alloc() with wrong page counts
Silently keeping entries in the list if the address matches, but the
page count doesn't is a bad idea, and can lead to double frees.
grub_efi_free_pages() have already freed parts of this block by this
point, and thus keeping the whole block in the list and freeing it again
at exit can lead to double frees.
Signed-off-by: Mate Kukri <mate.kukri@canonical.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Mate Kukri [Wed, 12 Jun 2024 15:10:50 +0000 (16:10 +0100)]
kern/efi/mm: Change grub_efi_allocate_pages_real() to call semantically correct free function
If the firmware happens to return 0 as an address of allocated pages,
grub_efi_allocate_pages_real() tries to allocate a new set of pages,
and then free the ones at address 0.
However at that point grub_efi_store_alloc() wasn't yet called, so
freeing the pages at 0 using grub_efi_free_pages() which calls
grub_efi_drop_alloc() isn't necessary, so let's call b->free_pages()
instead.
The call to grub_efi_drop_alloc() doesn't seem particularly harmful,
because it seems to do nothing if the allocation it is asked to drop
isn't on the list, but the call to it is obviously unnecessary here.
Signed-off-by: Mate Kukri <mate.kukri@canonical.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Mate Kukri [Wed, 12 Jun 2024 15:10:49 +0000 (16:10 +0100)]
kern/efi/mm: Change grub_efi_mm_add_regions() to keep track of map allocation size
If the map was too big for the initial allocation, it was freed and replaced
with a bigger one, but the free call still used the hard-coded size.
Seems like this wasn't hit for a long time, because most firmware maps
fit into 12K.
This bug was triggered on Project Mu firmware with a big memory map, and
results in the heap getting trashed and the firmware ASSERTING on
corrupted heap guard values when GRUB exits.
Signed-off-by: Mate Kukri <mate.kukri@canonical.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Glenn Washburn [Sun, 9 Jun 2024 04:42:43 +0000 (23:42 -0500)]
tests: Switch to requiring exfatprogs from exfat-utils
The current Debian stable, now 12, has dropped the exfat-utils package
that the exfat filesystem test requires to run. There is an exfatprogs
package that replaces exfat-utils, though it is not a drop-in replacement
because mkfs.exfat has differing command line option names. Note, that
we're not yet switching to using the exfat kernel module because this
allows the testings on kernels that do not have the module.
Update mkfs.exfat usage to adhere to the different exfatprogs usage. Also,
the exfatprogs mkfs.exfat, following the exfat specification more closely,
only allows a maximum of 22 bytes of UTF-16 characters in the volume label
compared to 30 bytes from exfat-utils. So the exfat label test is updated
accordingly.
Update documentation to note that exfatprogs is now needed and also
exfat-fuse, which is needed do the fuse mount.
Signed-off-by: Glenn Washburn <development@efficientek.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Glenn Washburn [Sun, 9 Jun 2024 04:22:05 +0000 (23:22 -0500)]
tests/util/grub-shell-luks-tester: Fix detached header test getting wrong header path
When $detached_header was set 1, $luksdiskfile was set to the LUKS header
file path with "${detached_header:-$luksfile}" appended, which evaluates
to "1". Fix this by using two statements to set $luksdiskfile. The first
sets it to the header file if $detached_header is set, otherwise leave it
unset. The second statement sets it to itself if it is already set,
otherwise it is set to $luksfile.
Glenn Washburn [Sun, 9 Jun 2024 02:42:35 +0000 (21:42 -0500)]
tests/util/grub-shell: Add flexibility in QEMU firmware handling
First look for firmware files in the source directory and then, if not
found, look for them in locations where Debian installs them. Prefer to
use the unified firmware file and, if not found, use the pflash firmware
files split in to code and variables. By looking for files in the source
directory first, system firmware files can be overridden and it can be
ensured that the tests can be run regardless of the distro or where the
system firmware files are stored. If no firmware files are found, print
an error message and exit with error.
If a firmware VARS file is found, use it with snapshot mode enabled, which
makes the VARS writable to the virtual machine, but does not write back
the changes to the file. This allows using the readonly system VARS file
without copying it or using it in readonly mode, which causes the ARM
machine to fail. This also gives tests effectively their own ephemeral VARS
file that can be written to without causing side-effects for other tests.
Signed-off-by: Glenn Washburn <development@efficientek.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Glenn Washburn [Sun, 9 Jun 2024 02:42:34 +0000 (21:42 -0500)]
tests/util/grub-shell: Use pflash instead of -bios to load UEFI firmware
According to the OVMF whitepaper [1]:
IMPORTANT: Never pass OVMF.fd to qemu with the -bios option. That option
maps the firmware image as ROM into the guest's address space, and forces
OVMF to emulate non-volatile variables with a fallback driver that is
bound to have insufficient and confusing semantics.
Use the pflash interface instead. Currently the unified firmware file is
used, which contains both firmware code and variable sections. By enabling
snapshot on the pflash device, the firmware can be loaded in such a way
that variables can be written to without writing to the backing file.
Since pflash does no searching for firmware paths that are not absolute,
unlike the -bios option, also make firmware paths absolute. Additionally,
update the previous firmware paths or file names that did not correspond to
ones installed by Debian.
Use the q35 machine, instead of the default i440fx, for i386-efi because
the default machine type does not emulate a flash device, which is now
needed to load the firmware.
Glenn Washburn [Sun, 9 Jun 2024 02:22:31 +0000 (21:22 -0500)]
tests/util/grub-shell: Print gdbinfo if on EFI platform
Allow using GDB to debug a failing QEMU test. This output does not cause
issues for tests because it happens before the trim line, and so will be
ignored.
Signed-off-by: Glenn Washburn <development@efficientek.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Udo Steinberg [Fri, 7 Jun 2024 21:44:43 +0000 (23:44 +0200)]
term/ns8250-spcr: Add one more 16550 debug type
Type 0x01 was introduced with the ACPI DBGP table and type 0x12 was introduced
with the ACPI DBG2 table. Type 0x12 is used by the ACPI SPCR table on recent
AWS bare-metal instances (c6i/c7i). Also give each debug type a proper name.
Michael Chang [Mon, 6 May 2024 02:34:22 +0000 (10:34 +0800)]
net/drivers/ieee1275/ofnet: Remove 200 ms timeout in get_card_packet() to reduce input latency
When GRUB image is netbooted on ppc64le, the keyboard input exhibits
significant latency, reports even say that characters are processed
about once per second. This issue makes interactively trying to debug
a ppc64le config very difficult.
It seems that the latency is largely caused by a 200 ms timeout in the
idle event loop, during which the network card interface is consistently
polled for incoming packets. Often, no packets arrive during this
period, so the timeout nearly always expires, which blocks the response
to key inputs.
Furthermore, this 200 ms timeout might not need to be enforced at this
basic layer, considering that GRUB performs synchronous reads and its
timeout management is actually handled by higher layers, not directly in
the card instance. Additionally, the idle polling, which reacts to
unsolicited packets like ICMP and SLAAC, would be fine at a less frequent
polling interval, rather than needing a timeout for receiving a response.
For these reasons, we believe the timeout in get_card_packet() should be
effectively removed. According to test results, the delay has disappeared,
and it is now much easier to use interactively.
Signed-Off-by: Michael Chang <mchang@suse.com> Tested-by: Tony Jones <tonyj@suse.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Hector Cao [Mon, 3 Jun 2024 21:36:25 +0000 (23:36 +0200)]
commands/efi/tpm: Re-enable measurements on confidential computing platforms
The measurements for confidential computing has been introduced in the
commit 4c76565b6 (efi/tpm: Add EFI_CC_MEASUREMENT_PROTOCOL support).
Recently the patch 30708dfe3 (tpm: Disable the tpm verifier if the TPM
device is not present) has been introduced to optimize the memory usage
when a TPM device is not available on platforms. This fix prevents the
tpm module to be loaded on confidential computing platforms, e.g. Intel
machines with TDX enabled, where the TPM device is not available.
In this patch, we propose to load the tpm module for this use case by
generalizing the tpm feature detection in order to cover CC platforms.
Basically, we do it by detecting the availability of the
EFI_CC_MEASUREMENT_PROTOCOL EFI protocol.
Fixes: https://savannah.gnu.org/bugs/?65821 Fixes: 30708dfe3 (tpm: Disable the tpm verifier if the TPM device is not present) Signed-off-by: Hector Cao <hector.cao@canonical.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com> Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Avnish Chouhan [Thu, 23 May 2024 13:13:14 +0000 (18:43 +0530)]
kern/ieee1275/init: Add IEEE 1275 Radix support for KVM on Power
This patch adds support for Radix, Xive and Radix_gtse in Options
vector5 which is required for KVM LPARs. KVM LPARs ONLY support
Radix and not the Hash. Not enabling Radix on any PowerVM KVM LPARs
will result in boot failure.
Signed-off-by: Avnish Chouhan <avnish@linux.ibm.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Daniel Axtens [Sun, 12 May 2024 14:32:09 +0000 (00:32 +1000)]
io/gzio: Properly init a table
ARRAY_SIZE() is the count of elements, but the element size is 4 bytes, so
this was only initing the first 1/4th of the table. Detected with valgrind.
This should only matter in error paths, and I've not been able to identify
any actual misbehaviour that results from reading in-bounds but uninited data.
Signed-off-by: Daniel Axtens <dja@axtens.net> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Daniel Axtens [Sun, 12 May 2024 14:32:08 +0000 (00:32 +1000)]
io/gzio: Abort early when get_byte() reads nothing
This isn't intended to be a functional change, but it makes a lot of failures a lot
faster, which is extremely helpful for fuzzing.
Without this change, we keep trying and trying to read more bytes into our buffer,
never being able to (read always returns 0) and so we just return old buffer contents
over and over until the decompression process fails some other way.
Signed-off-by: Daniel Axtens <dja@axtens.net> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Alec Brown [Wed, 24 Jan 2024 06:26:37 +0000 (06:26 +0000)]
cli_lock: Add build option to block command line interface
Add functionality to disable command line interface access and editing of GRUB
menu entries if GRUB image is built with --disable-cli.
Signed-off-by: Alec Brown <alec.r.brown@oracle.com> Reviewed-by: Vladimir Serbinenko <phcoder@gmail.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Yifan Zhao [Mon, 20 May 2024 17:20:58 +0000 (01:20 +0800)]
fs/erofs: Add support for the EROFS
The EROFS [1] is a lightweight read-only filesystem designed for performance
which has already been shipped in most Linux distributions as well as widely
used in several scenarios, such as Android system partitions, container
images and rootfs for embedded devices.
This patch brings in the EROFS uncompressed support. Now, it's possible to
boot directly through GRUB with an EROFS rootfs.
Support for the EROFS compressed files will be added later.
[1] https://erofs.docs.kernel.org
Signed-off-by: Yifan Zhao <zhaoyifan@sjtu.edu.cn> Tested-by: Daniel Axtens <dja@axtens.net> Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Rogier [Mon, 6 May 2024 20:18:45 +0000 (15:18 -0500)]
disk/lvm: GRUB fails to detect LVM volumes due to an incorrect computation of mda_end
When handling a regular LVM volume, GRUB can fail with the message:
error: disk `lvmid/******-****-****-****-****-****-****/******-****-****-****-****-****-******' not found.
If the condition which triggers this exists, grub-probe will report the
error mentioned above. Similarly, the GRUB boot code will fail to detect
LVM volumes, resulting in a failure to boot off of LVM disks/partitions.
The condition can be created on any LVM VG by an LVM configuration change,
so any system with /boot on LVM can become unbootable at "any" time (after
any LVM configuration change).
The problem is caused by an incorrect computation of mda_end in disk/lvm.c,
when the metadata area wraps around. Apparently, this can start happening at
around 220 metadata changes to the VG.
Fixes: 879c4a834 (lvm: Fix two more potential data-dependent alloc overflows) Fixes: https://savannah.gnu.org/bugs/?61620 Signed-off-by: Rogier <rogier777@gmail.com> Signed-off-by: Glenn Washburn <development@efficientek.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com> Tested-By: Michael Chang <mchang@suse.com>
Forest [Tue, 7 May 2024 00:07:30 +0000 (17:07 -0700)]
disk/cryptodisk: Allow user to retry failed passphrase
Give the user a chance to re-enter their cryptodisk passphrase after a typo,
rather than immediately failing (and likely dumping them into a GRUB shell).
By default, we allow 3 tries before giving up. A value in the
cryptodisk_passphrase_tries environment variable will override this default.
The user can give up early by entering an empty passphrase, just as they
could before this patch.
Signed-off-by: Forest <forestix@nom.one> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
The test corpus for version-1 RAID generated an infinite recursion
in grub_partition_iterate() while attempting to read the superblock.
The reason for the issue was that the data region overlapped with
the superblock.
The "ground truth" stack protector cookie value is kept in a global
variable, and loaded in every function prologue and epilogue to store
it into resp. compare it with the stack slot holding the cookie.
If the comparison fails, the program aborts, and this might occur
spuriously when the global variable changes values between the entry and
exit of a function. This implies that assigning the global variable at
boot should not involve any instrumented function calls, unless special
care is taken to ensure that the live call stack is synchronized, which
is non-trivial.
So avoid any function calls, including grub_memcpy(), which is
unnecessary given that the stack cookie is always a suitably aligned
variable of the native word size.
While at it, leave the last byte 0x0 to avoid inadvertent unbounded
strings on the stack.
Note that the use of __attribute__((optimize)) is described as
unsuitable for production use in the GCC documentation, so let's drop
this as well now that it is no longer needed.
Oliver Steffen [Thu, 22 Feb 2024 13:32:31 +0000 (14:32 +0100)]
build: Track explicit module dependencies in Makefile.core.def
Add a new keyword, "depends", to the module definition syntax
used in Makefile.core.def. This allows specifying explicit module
dependencies together with the module definition.
Do not track the "extra_deps.lst" file in the repository anymore,
it is now auto-generated.
Make use of this new keyword in the bli module definition.
Signed-off-by: Oliver Steffen <osteffen@redhat.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Gary Lin [Mon, 25 Mar 2024 02:11:34 +0000 (10:11 +0800)]
util/bash-completion: Fix for bash-completion 2.12
_split_longopt() was the bash-completion private API and removed since
bash-completion 2.12. This commit initializes the bash-completion
general variables with _init_completion() to avoid the potential
"command not found" error.
Although bash-completion 2.12 introduces _comp_initialize() to deprecate
_init_completion(), _init_completion() is still chosen for the better
backward compatibility.
Signed-off-by: Gary Lin <glin@suse.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
No alignment is guaranteed and in fact on my IA-64 SAPIC is aligned
to 4 bytes instead of 8 and causes a trap. It affects only rarely used
lsacpi command and so went unnoticed.
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Michael Chang [Mon, 19 Feb 2024 03:29:11 +0000 (11:29 +0800)]
gfxmenu/view: Resolve false grub_errno disrupting boot process
When enabling gfxmenu and choosing to boot the Xen hypervisor from its
menu, an error occurred:
error: ../../grub-core/video/bitmap_scale.c:42:null src bitmap in grub_video_create_scaled.
The error is returned by grub_video_bitmap_create_scaled() when the
source pixmap is not there. The init_background() uses it to scale up
the background image so it can fully fit into the screen resolution.
However not all backgrounds are set by a image, i.e. the "desktop-image"
property of the theme file. Instead a color code may be used, for
example OpenSUSE's green background uses "desktop-color" property:
desktop-color: "#0D202F"
So it is absolutely fine to call init_background() without a raw pixmap
if color code is used. A missing check has to be added to ensure the
grub_errno will not be erroneously set and gets in the way of ensuing
boot process.
The reason it happens sporadically is due to grub_errno is reset to
GRUB_ERR_NONE in other places if a function's error return can be
ignored. In particular this hunk in grub_gfxmenu_create_box() does the
majority of the reset of grub_errno returned by init_background(), but
the path may not be always chosen.
Jon DeVree [Sun, 11 Feb 2024 15:34:58 +0000 (10:34 -0500)]
fs/xfs: Handle non-continuous data blocks in directory extents
The directory extent list does not have to be a continuous list of data
blocks. When GRUB tries to read a non-existant member of the list,
grub_xfs_read_file() will return a block of zero'ed memory. Checking for
a zero'ed magic number is sufficient to skip this non-existant data block.
Prior to commit 07318ee7e (fs/xfs: Fix XFS directory extent parsing)
this was handled as a subtle side effect of reading the (non-existant)
tail data structure. Since the block was zero'ed the computation of the
number of directory entries in the block would return 0 as well.
Fixes: 07318ee7e (fs/xfs: Fix XFS directory extent parsing) Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=2254370 Signed-off-by: Jon DeVree <nuxi@vault24.org> Reviewed-By: Vladimir Serbinenko <phcoder@gmail.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Revert "templates: Reinstate unused version comparison functions with warning"
We reinstated these functions before the 2.12 release with a warning
such that users upgrading to 2.12 who had custom scripts using them
would not get broken in the upgrade and agreed to remove them after
the 2.12 release. This removes them accordingly.
This reverts commit e7a831963 (templates: Reinstate unused version
comparison functions with warning).
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Daniel Kiper <daniel.kiper@oracle.com> Signed-off-by: Julian Andres Klode <julian.klode@canonical.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Gary Lin [Tue, 30 Jan 2024 06:41:10 +0000 (14:41 +0800)]
util/bash-completion: Load scripts on demand
There are two system directories for bash-completion scripts. One is
/usr/share/bash-completion/completions/ and the other is
/etc/bash_completion.d/. The "etc" scripts are loaded in advance and
for backward compatibility while the "usr" scripts are loaded on demand.
To load scripts on demand it requires a corresponding script for every
command. So, the main bash-completion script is split into several
subscripts for different "grub-*" commands. To share the code the real
completion functions are still implemented in "grub" and each
subscript sources "grub" and invokes the corresponding function.
Signed-off-by: Gary Lin <glin@suse.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Samuel Thibault [Tue, 23 Jan 2024 20:47:36 +0000 (21:47 +0100)]
osdep/hurd/getroot: Fix 64-bit build
The file_get_fs_options() takes a mach_msg_type_number_t, 32-bit,
not a size_t, 64-bit on 64-bit platforms.
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org> Reviewed-by: Vladimir Serbinenko <phcoder@gmail.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Alec Brown [Sat, 20 Jan 2024 02:52:51 +0000 (02:52 +0000)]
loader/i386/multiboot_mbi: Clean up redundant code
In grub-core/loader/i386/multiboot_mbi.c, Coverity spotted redundant code where
the variable err was being set to GRUB_ERR_NONE and then being overwritten
later without being used. Since this is unnecessary, we can remove the code
that sets err to GRUB_ERR_NONE.
Fixes: CID 428877 Signed-off-by: Alec Brown <alec.r.brown@oracle.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Alec Brown [Sat, 20 Jan 2024 02:52:50 +0000 (02:52 +0000)]
osdep/unix/getroot: Clean up redundant code
In grub-core/osdep/unix/getroot.c, Coverity spotted redundant code where the
double pointer os_dev was being set to 0 and then being overwritten later
without being used. Since this is unnecessary, we can remove the code that
sets os_dev to 0.
Fixes: CID 428875 Signed-off-by: Alec Brown <alec.r.brown@oracle.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Alec Brown [Sat, 20 Jan 2024 02:52:49 +0000 (02:52 +0000)]
fs/jfs: Clean up redundant code
In grub-core/fs/jfs.c, Coverity spotted redundant code where the pointer diro
was being set to 0 and then being overwritten later without being used. Since
this is unnecessary, we can remove the code that sets diro to 0.
Fixes: CID 428876 Signed-off-by: Alec Brown <alec.r.brown@oracle.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Gary Lin [Fri, 29 Dec 2023 09:08:20 +0000 (17:08 +0800)]
tests: Switch password quality check off for luks2 test
When adding/changing the password for the luks2 partition, cryptsetup
may reject the command due to the weak password. Since this is only for
testing, add "--force-password" to switch password quality check off to
avoid the unexpected failure.
Signed-off-by: Gary Lin <glin@suse.com> Reviewed-by: Glenn Washburn <development@efficientek.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Glenn Washburn [Tue, 19 Dec 2023 06:00:01 +0000 (00:00 -0600)]
efi: Add support for reproducible builds
Having randomly generated bytes in the binary output breaks reproducible
builds. Since build timestamps are usually the source of irreproducibility
there is a standard which defines an environment variable SOURCE_DATE_EPOCH
to be used when set for build timestamps. According to the standard [1], the
value of SOURCE_DATE_EPOCH is a base-10 integer of the number of seconds
since the UNIX epoch. Currently, this is a 10 digit number that fits into
32-bits, but will not shortly after the year 2100. So to be future-proof
only use the least significant 32-bits. On 64-bit architectures, where the
canary is also 64-bits, there is an extra 32-bits that can be filled to
provide more entropy. The first byte is NUL to filter out string buffer
overflow attacks and the remaining 24-bits are set to static random bytes.
Glenn Washburn [Tue, 19 Dec 2023 06:00:00 +0000 (00:00 -0600)]
efi: Generate stack protector canary at build time if urandom is available
Generating the canary at build time allows the canary to be different for
every build which could limit the effectiveness of certain exploits.
Fallback to the statically generated random bytes if /dev/urandom is not
readable, e.g. Windows.
On 32-bit architectures, which use a 32-bit canary, reduce the canary to
4 bytes with one byte being NUL to filter out string buffer overflow attacks.
Signed-off-by: Glenn Washburn <development@efficientek.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Glenn Washburn [Tue, 19 Dec 2023 05:59:59 +0000 (23:59 -0600)]
efi: Initialize canary to non-zero value
The canary, __stack_chk_guard, is in the BSS and so will get initialized to
zero if it is not explicitly initialized. If the UEFI firmware does not
support the RNG protocol, then the canary will not be randomized and will
be zero. This seems like a possibly easier value to write by an attacker.
Initialize canary to static random bytes, so that it is still random when
there is no RNG protocol. Set at least one byte to NUL to protect against
string buffer overflow attacks [1]. Code that writes NUL terminated strings
will terminate when a NUL is encountered in the input byte stream. So the
attacker will not be able to forge the canary by including it in the input
stream without terminating the string operation and thus limiting the
stack corruption.
Alec Brown [Wed, 13 Dec 2023 22:25:13 +0000 (22:25 +0000)]
gfxmenu/gui_image: Fix double free of bitmap
In grub-core/gfxmenu/gui_image.c, Coverity detected a double free in the
function load_image(). The function checks if self->bitmap and self->raw_bitmap
aren't NULL and then frees them. In the case self->bitmap and self->raw_bitmap
are the same, only self->raw_bitmap is freed which would also free the memory
used by self->bitmap. However, in this case self->bitmap isn't being set to NULL
which could lead to a double free later in the code. After self->raw_bitmap is
freed, it gets set to the variable bitmap. If this variable is NULL, the code
could have a path that would free self->bitmap a second time in the function
rescale_image().
Fixes: CID 292472 Signed-off-by: Alec Brown <alec.r.brown@oracle.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Qiumiao Zhang [Mon, 11 Dec 2023 09:20:25 +0000 (17:20 +0800)]
commands/acpi: Fix calculation of ACPI tables addresses when processing RSDT and XSDT
According to the ACPI specification the XSDT Entry field contains an array
of 64-bit physical addresses which points to other DESCRIPTION_HEADERs. However,
the entry_ptr iterator is defined as a 32-bit pointer. It means each 64-bit
entry in the XSDT table is treated as two separate 32-bit entries then. Fix the
issue by using correct addresses sizes when processing RSDT and XSDT tables.
Signed-off-by: Qiumiao Zhang <zhangqiumiao1@huawei.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
There is some variance in how compiler treats sizeof() especially
on 32-bit platforms where it can be naturally either int or long.
Explicit cast solves the issue.
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
The HAVE_LIBZFS is defined by libzfs test and hence conflicts with
manual definition. On NetBSD it ends up detecting zfs but not detecting
nvpair and creates confusion. Split them.
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Wrong function and variable name cause a stupid compilation error on
NetBSD and OpenBSD. Only NetBSD and OpenBSD use this file. No other
platform is affected.
Additionally, define RAW_FLOPPY_MAJOR constant if it is missing.
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
build: Tolerate unused-but-set in generated lexer/bison files
We don't really control the small aspects of generated files and NetBSD
version has an unused variable that is then detected by gcc as warning
that is then promoted to error.
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
loader/i386/bsdXX: Fix loading after unaligned module
Current code implicitly assumes that aligning chunk_size + *kern_end is
the same as aligning on curload which is not the case because
chunk_size starts at zero even if *kern_end is unaligned and ALIGN_PAGE
moved curload to an aligned position but not *kern_end + chunk_size.
This fixes booting of FreeBSD with zfs module.
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Mate Kukri [Fri, 8 Dec 2023 17:20:12 +0000 (17:20 +0000)]
grub-core/Makefile.am: Make path to extra_deps.lst relative to $(top_srcdir)/grub-core
The commit 154dcb1ae (build: Allow explicit module dependencies) broke
out of tree builds by introducing the extra_deps.lst file into the
source tree but referencing it just by name in grub-core/Makefile.am.
Fix it by adding $(top_srcdir)/grub-core to the path.
Mate Kukri [Fri, 8 Dec 2023 16:57:55 +0000 (16:57 +0000)]
util/grub-install: Move platdir path canonicalization after files were copied to grubdir
The commit 3f9eace2d (util/grub-install: Delay copying files to
{grubdir,platdir} after install_device was validated) delaying
copying of files caused a regression when installing without an
existing directory structure.
This patch ensures that the platform directory actually exists by the
time the code tries to canonicalize its filename.
Fixes: 3f9eace2d (util/grub-install: Delay copying files to {grubdir,platdir} after install_device was validated) Signed-off-by: Mate Kukri <mate.kukri@canonical.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Michael Chang [Wed, 6 Dec 2023 03:42:04 +0000 (11:42 +0800)]
util/grub-mkstandalone: Ensure deterministic tar file creation by sorting contents
The add_tar_files() function currently iterates through a directory's
content using readdir(), which doesn't guarantee a specific order. This
lack of deterministic behavior impacts reproducibility in the build process.
This commit resolves the issue by introducing sorting functionality.
The list retrieved by readdir() is now sorted alphabetically before
incorporation into the tar archive, ensuring consistent and predictable
file ordering within the archive.
On the occasion fix tfp memory leak.
Signed-off-by: Michael Chang <mchang@suse.com> Signed-off-by: Bernhard Wiedemann <bwiedemann@suse.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Michael Chang [Wed, 6 Dec 2023 03:42:03 +0000 (11:42 +0800)]
util/grub-mkstandalone: Ensure stable timestamps for generated images
This change mirrors a previous fix [1] but is specific to images
generated by grub-mkstandalone.
The former fix, commit 85a7be241 (util/mkimage: Use stable timestamp
when generating binaries.), focused on utilizing a stable timestamp
during binary generation in the util/mkimage context. This commit
extends that approach to the images produced by grub-mkstandalone,
ensuring consistency and stability in timestamps across all generated
binaries.
[1] 85a7be241 util/mkimage: Use stable timestamp when generating binaries.
Signed-off-by: Michael Chang <mchang@suse.com> Signed-off-by: Bernhard Wiedemann <bwiedemann@suse.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
templates: Reinstate unused version comparison functions with warning
Revert the commit a79c567f6 (templates: Remove unused version comparison
functions) and add a warning to the functions that they are deprecated.
Removing the functions directly caused a lot of upgrade issues
with custom user scripts that called the functions. In Debian and
Ubuntu, grub-mkconfig is invoked as a post-installation script
and would fail, causing upgrades to fail halfway through and
putting the package manager into an inconsistent state.
FWIW, we get one bug per 2 weeks basically, for an interim Ubuntu
release which generally does not receive much usage, that is a high
number.
The proposal is to pick this for 2.12 and directly after the release
remove it again. Then users will have time to fix their scripts without
systems breaking immediately.
This reverts commit a79c567f6 (templates: Remove unused version
comparison functions).
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Daniel Kiper <daniel.kiper@oracle.com> Signed-off-by: Julian Andres Klode <julian.klode@canonical.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
Mate Kukri [Fri, 24 Nov 2023 08:32:57 +0000 (08:32 +0000)]
util/grub-install: Delay copying files to {grubdir,platdir} after install_device was validated
Previously grub-install copied modules to grubdir before doing any
validation on the install_device.
When grub-install was called with an invalid install_device, modules
were already copied to /boot before it found out and was forced to rely
on atexit() rollback.
This patch delays copying the modules after at least some install_device
validation was done, and thus reduces reliance on successful rollback.
Signed-off-by: Mate Kukri <mate.kukri@canonical.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
efi: Set shim_lock_enabled even if validation is disabled
If validation has been disabled via MokSbState, secure boot on the
firmware is still enabled, and the kernel fails to boot.
This is a bit hacky, because shim_lock is not *fully* enabled, but
it triggers the right code paths.
Ultimately, all this will be resolved by shim gaining it's own image
loading and starting protocol, so this is more a temporary workaround.
Fixes: 6425c12cd (efi: Fallback to legacy mode if shim is loaded on x86 archs) Cc: Peter Jones <pjones@redhat.com> Cc: Michael Chang <mchang@suse.com> Signed-off-by: Julian Andres Klode <julian.klode@canonical.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
projects / thirdparty / grub.git / log
