diff options
Diffstat (limited to 'drivers/firmware/efi/libstub/efi-stub-helper.c')
| -rw-r--r-- | drivers/firmware/efi/libstub/efi-stub-helper.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/firmware/efi/libstub/efi-stub-helper.c b/drivers/firmware/efi/libstub/efi-stub-helper.c index 29ed2f9b218c..58539c1280a5 100644 --- a/drivers/firmware/efi/libstub/efi-stub-helper.c +++ b/drivers/firmware/efi/libstub/efi-stub-helper.c @@ -41,6 +41,13 @@ static unsigned long __chunk_size = EFI_READ_CHUNK_SIZE; #define EFI_ALLOC_ALIGN EFI_PAGE_SIZE #endif +static int __section(.data) __nokaslr; + +int __pure nokaslr(void) +{ + return __nokaslr; +} + struct file_info { efi_file_handle_t *handle; u64 size; @@ -313,10 +320,14 @@ void efi_free(efi_system_table_t *sys_table_arg, unsigned long size, * environments, first in the early boot environment of the EFI boot * stub, and subsequently during the kernel boot. */ -efi_status_t efi_parse_options(char *cmdline) +efi_status_t efi_parse_options(char const *cmdline) { char *str; + str = strstr(cmdline, "nokaslr"); + if (str == cmdline || (str && str > cmdline && *(str - 1) == ' ')) + __nokaslr = 1; + /* * If no EFI parameters were specified on the cmdline we've got * nothing to do. |