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25 Commits
Author SHA1 Message Date
Alec Brown bb65d81fe3 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>
 2024-06-06 16:54:10 +02:00
Ard Biesheuvel b272ed230e efi: Fix stack protector issues 
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.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Glenn Washburn <development@efficientek.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
 2024-05-09 15:20:05 +02:00
Hans de Goede 3e4cbbeca0 kern/main: Suppress the "Welcome to GRUB!" message in EFI builds 
GRUB EFI builds are now often used in combination with flicker-free
boot, but this breaks with upstream GRUB because the "Welcome to GRUB!"
message will kick the EFI fb into text mode and show the msg, breaking
the flicker-free experience.

EFI systems are so fast, that when the menu or the countdown are
enabled the message will be immediately overwritten, so in these cases
not printing the message does not matter.

And in case when the timeout_style is set to TIMEOUT_STYLE_HIDDEN,
the user has asked GRUB to be quiet (for example to allow flickfree
boot) and thus the message should not be printed.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Robbie Harwood <rharwood@redhat.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
 2022-04-04 17:23:16 +02:00
Elyes Haouas edd9af9192 kern: Remove trailing whitespaces 
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
 2022-03-14 15:46:55 +01:00
Marco A Benatto 9e95f45cee verifiers: Move verifiers API to kernel image 
Move verifiers API from a module to the kernel image, so it can be
used there as well. There are no functional changes in this patch.

Signed-off-by: Marco A Benatto <mbenatto@redhat.com>
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
 2021-03-02 15:54:15 +01:00
Matthew Garrett 1fe26ab4a0 * grub-core/kern/main.c (grub_set_prefix_and_root): Set variable 
cmdpath to firmware directory.
 2013-11-14 15:53:32 +01:00
Vladimir 'phcoder' Serbinenko e744219bb6 Implement boot time analysis framework. 2013-03-19 20:25:09 +01:00
Vladimir 'phcoder' Serbinenko 774683685f Lift up core size limits on some platforms. Fix potential memory 
corruption with big core on small memory systems. Document remaining
	limits.
 2013-03-07 08:17:24 +01:00
Vladimir 'phcoder' Serbinenko be174e5ef3 * grub-core/kern/main.c (grub_set_prefix_and_root): Strip trailing 
platform from firmware path.
 2013-03-01 10:35:51 +01:00
Vladimir 'phcoder' Serbinenko f35abd8190 * grub-core/kern/main.c (grub_set_prefix_and_root): Fix memory leak. 
* grub-core/net/drivers/ieee1275/ofnet.c
	(grub_ieee1275_net_config_real): Likewise.
 2012-06-22 11:51:48 +02:00
Vladimir 'phcoder' Serbinenko eb6d0dd3a1 * grub-core/kern/main.c (grub_set_prefix_and_root): Skip escaped commas 
when looking for partition separator.
 2012-06-20 23:33:34 +02:00
Vladimir 'phcoder' Serbinenko 02a2bf8384 Add noreturn attributes and remove unreachable code. 
* grub-core/bus/cs5536.c (grub_cs5536_smbus_wait): Remove unreachable
	code.
	* grub-core/commands/halt.c (grub_cmd_halt): Remove unreachable
	code. Mark as noreturn.
	* grub-core/commands/minicmd.c (grub_mini_cmd_exit): Likewise.
	* grub-core/commands/reboot.c (grub_cmd_reboot): Likewise.
	* grub-core/disk/efi/efidisk.c (grub_efidisk_get_device_name): Remove
	unreachable code.
	* grub-core/kern/main.c (grub_main): Mark as noreturn.
	* grub-core/kern/rescue_reader.c (grub_rescue_run): Likewise.
	* grub-core/lib/posix_wrap/stdlib.h (abort): Likewise.
	* grub-core/normal/menu.c (run_menu): Remove unreachable code.
	* include/grub/kernel.h (grub_main): Mark as noreturn.
	* include/grub/reader.h (grub_rescue_run): Likewise.
 2011-12-13 15:13:51 +01:00
Vladimir 'phcoder' Serbinenko 36dd20ad0b * grub-core/kern/main.c (grub_set_prefix_and_root): Init prefix. 2011-10-19 20:30:06 +02:00
Vladimir 'phcoder' Serbinenko a97501d238 Make grub_prefix into module to fix the arbitrary limit and save 
some space.

	* grub-core/kern/emu/main.c (grub_prefix): Removed.
	* grub-core/kern/i386/coreboot/startup.S (grub_prefix): Likewise.
	* grub-core/kern/i386/efi/startup.S (grub_prefix): Likewise.
	* grub-core/kern/i386/ieee1275/startup.S (grub_prefix): Likewise.
	* grub-core/kern/i386/pc/startup.S (grub_prefix): Likewise.
	* grub-core/kern/i386/qemu/startup.S (grub_prefix): Likewise.
	* grub-core/kern/ia64/efi/startup.S (grub_prefix): Likewise.
	* grub-core/kern/mips/startup.S (grub_prefix): Likewise.
	* grub-core/kern/powerpc/ieee1275/startup.S (grub_prefix): Likewise.
	* grub-core/kern/sparc64/ieee1275/crt0.S (grub_prefix): Likewise.
	* grub-core/kern/x86_64/efi/startup.S (grub_prefix): Likewise.
	* include/grub/ia64/efi/kernel.h: Removed.
	* include/grub/kernel.h: New module type OBJ_TYPE_PREFIX.
	(grub_prefix): Removed.
	* include/grub/offsets.h (GRUB_KERNEL_I386_PC_PREFIX): Removed.
	(GRUB_KERNEL_I386_PC_PREFIX_END): Likewise.
	(GRUB_KERNEL_I386_QEMU_PREFIX): Likewise.
	(GRUB_KERNEL_I386_QEMU_PREFIX_END): Likewise.
	(GRUB_KERNEL_SPARC64_IEEE1275_PREFIX): Likewise.
	(GRUB_KERNEL_SPARC64_IEEE1275_PREFIX_END): Likewise.
	(GRUB_KERNEL_POWERPC_IEEE1275_PREFIX): Likewise.
	(GRUB_KERNEL_POWERPC_IEEE1275_PREFIX_END): Likewise.
	(GRUB_KERNEL_MIPS_LOONGSON_PREFIX): Likewise.
	(GRUB_KERNEL_MIPS_LOONGSON_PREFIX_END): Likewise.
	(GRUB_KERNEL_MIPS_QEMU_MIPS_PREFIX): Likewise.
	(GRUB_KERNEL_MIPS_QEMU_MIPS_PREFIX_END): Likewise.
	(GRUB_KERNEL_MIPS_ARC_PREFIX): Likewise.
	(GRUB_KERNEL_MIPS_ARC_PREFIX_END): Likewise.
	(GRUB_KERNEL_I386_EFI_PREFIX): Likewise.
	(GRUB_KERNEL_I386_EFI_PREFIX_END): Likewise.
	(GRUB_KERNEL_IA64_EFI_PREFIX): Likewise.
	(GRUB_KERNEL_IA64_EFI_PREFIX_END): Likewise.
	(GRUB_KERNEL_X86_64_EFI_PREFIX): Likewise.
	(GRUB_KERNEL_X86_64_EFI_PREFIX_END): Likewise.
	(GRUB_KERNEL_I386_COREBOOT_PREFIX): Likewise.
	(GRUB_KERNEL_I386_COREBOOT_PREFIX_END): Likewise.
	(GRUB_KERNEL_I386_MULTIBOOT_PREFIX): Likewise.
	(GRUB_KERNEL_I386_MULTIBOOT_PREFIX_END): Likewise.
	(GRUB_KERNEL_I386_IEEE1275_PREFIX): Likewise.
	(GRUB_KERNEL_I386_IEEE1275_PREFIX_END): Likewise.
	(GRUB_KERNEL_MACHINE_PREFIX): Likewise.
	(GRUB_KERNEL_MACHINE_PREFIX_END): Likewise.
	* grub-core/kern/main.c (grub_set_prefix_and_root): Retrieve grub_prefix
	from module.
	* util/grub-mkimage.c (image_target_desc): Removed prefix and
	prefix_end.
	(image_targets): Likewise.
	(generate_image): Put prefix as a module.
 2011-10-18 15:21:51 +02:00
Vladimir 'phcoder' Serbinenko 39705fadd7 Replace grub_module_iterate with FOR_MODULES. 
* grub-core/disk/memdisk.c (GRUB_MOD_INIT): Switched to new interface.
	* grub-core/kern/efi/efi.c (grub_arch_modules_addr): Renamed to...
	(grub_efi_modules_addr): ...this.
	* grub-core/kern/efi/init.c (grub_modbase): New variable.
	(grub_efi_init): Set grub_modbase.
	* grub-core/kern/emu/main.c (grub_arch_modules_addr): Removed.
	(grub_modbase): New variable.
	* grub-core/kern/i386/coreboot/init.c (grub_arch_modules_addr): Removed.
	(grub_modbase): New variable.
	(grub_machine_init): Set grub_modbase.
	* grub-core/kern/i386/pc/init.c (grub_arch_modules_addr): Removed.
	(grub_modbase): New variable.
	(grub_machine_init): Set grub_modbase.
	* grub-core/kern/ieee1275/init.c (grub_arch_modules_addr): Removed.
	(grub_modbase): New variable.
	(grub_machine_init): Set grub_modbase.
	* grub-core/kern/main.c (grub_module_iterate): Remove.
	(grub_modules_get_end): Use grub_modbase.
	(grub_load_modules): Use FOR_MODULES.
	(grub_load_config): Likewise.
	* grub-core/kern/mips/arc/init.c (grub_arch_modules_addr): Removed.
	(grub_modbase): New variable.
	(grub_machine_init): Set grub_modbase.
	* grub-core/kern/mips/loongson/init.c (grub_arch_modules_addr): Removed.
	(grub_modbase): New variable.
	(grub_machine_init): Set grub_modbase.
	* grub-core/kern/mips/qemu_mips/init.c (grub_arch_modules_addr):
	Removed.
	(grub_modbase): New variable.
	(grub_machine_init): Set grub_modbase.
	* include/grub/efi/efi.h (grub_efi_modules_addr): New declaration.
	* include/grub/kernel.h (grub_arch_modules_addr): Removed.
	(grub_module_iterate): Likewise.
	(grub_modbase): New variable declaration.
	(FOR_MODULES): New macro.
 2011-10-16 15:23:29 +02:00
Vladimir 'phcoder' Serbinenko 03a0046581 merge mainline into net 2011-07-02 18:52:50 +02:00
Vladimir 'phcoder' Serbinenko 574618a2e9 unify prefix handling across platforms 2011-07-02 14:09:36 +02:00
Patrick 6295b32f79 * grub-core/kern/main.c (grub_load_normal_mode): Correct the comment. 2011-06-25 01:09:32 +02:00
Vladimir 'phcoder' Serbinenko 3666d5f636 merge mainline and various cleanups 2011-05-17 14:02:18 +02:00
Vladimir 'phcoder' Serbinenko 54da1febce Rename mipsel-yeeloong to mipsel-loongson 2011-02-19 13:18:05 +01:00
Vladimir 'phcoder' Serbinenko 4531a206a1 * grub-core/fs/i386/pc/pxe.c (set_mac_env): Export variable. 
(set_env_limn_ro): Likewise.
	(GRUB_MOD_INIT): Likewise.
	* grub-core/hook/datehook.c (GRUB_MOD_INIT): Likewise. Change to
	ARRAY_SIZE while on it.
	(GRUB_MOD_FINI): Change to ARRAY_SIZE.
	* grub-core/normal/context.c (grub_env_export): Move from here ...
	* grub-core/kern/env.c (grub_env_export): ... here.
	* grub-core/normal/context.c (grub_cmd_export): Skip exporting root and
	prefix.
	* grub-core/kern/main.c (grub_main): Export root and prefix.
	* include/grub/env.h (grub_env_export): Export.
	Reported by: Seth Goldberg.
 2011-01-11 11:51:05 +01:00
BVK Chaitanya 297f0c2b6e merge with mainline 2010-07-13 00:43:28 +05:30
BVK Chaitanya bd7390ee84 pull-in emu-lite fixes 2010-06-02 15:18:33 +05:30
BVK Chaitanya 16321bf9ca pull-in emu-lite branch 2010-05-06 12:55:47 +05:30
BVK Chaitanya 8c41176882 automake commit without merge history 2010-05-06 11:34:04 +05:30