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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#pragma once
#include <efi.h>
#include <efilib.h>
#include <stddef.h>
#include "string-util-fundamental.h"
#define UINTN_MAX (~(UINTN)0)
#define INTN_MAX ((INTN)(UINTN_MAX>>1))
/* gnu-efi format specifiers for integers are fixed to either 64bit with 'l' and 32bit without a size prefix.
* We rely on %u/%d/%x to format regular ints, so ensure the size is what we expect. At the same time, we also
* need specifiers for (U)INTN which are native (pointer) sized. */
assert_cc(sizeof(int) == sizeof(uint32_t));
#if __SIZEOF_POINTER__ == 4
# define PRIuN L"u"
# define PRIiN L"d"
#elif __SIZEOF_POINTER__ == 8
# define PRIuN L"lu"
# define PRIiN L"ld"
#else
# error "Unexpected pointer size"
#endif
static inline void free(void *p) {
if (!p)
return;
/* Debugging an invalid free requires trace logging to find the call site or a debugger attached. For
* release builds it is not worth the bother to even warn when we cannot even print a call stack. */
#ifdef EFI_DEBUG
assert_se(BS->FreePool(p) == EFI_SUCCESS);
#else
(void) BS->FreePool(p);
#endif
}
static inline void freep(void *p) {
free(*(void **) p);
}
#define _cleanup_free_ _cleanup_(freep)
_malloc_ _alloc_(1) _returns_nonnull_ _warn_unused_result_
static inline void *xmalloc(size_t size) {
void *p;
assert_se(BS->AllocatePool(EfiLoaderData, size, &p) == EFI_SUCCESS);
return p;
}
_malloc_ _alloc_(1, 2) _returns_nonnull_ _warn_unused_result_
static inline void *xmalloc_multiply(size_t n, size_t size) {
assert_se(!__builtin_mul_overflow(size, n, &size));
return xmalloc(size);
}
/* Use malloc attribute as this never returns p like userspace realloc. */
_malloc_ _alloc_(3) _returns_nonnull_ _warn_unused_result_
static inline void *xrealloc(void *p, size_t old_size, size_t new_size) {
void *r = xmalloc(new_size);
new_size = MIN(old_size, new_size);
if (new_size > 0)
memcpy(r, p, new_size);
free(p);
return r;
}
#define xpool_print(fmt, ...) ((char16_t *) ASSERT_SE_PTR(PoolPrint((fmt), ##__VA_ARGS__)))
#define xnew(type, n) ((type *) xmalloc_multiply((n), sizeof(type)))
typedef struct {
EFI_PHYSICAL_ADDRESS addr;
size_t n_pages;
} Pages;
static inline void cleanup_pages(Pages *p) {
if (p->n_pages == 0)
return;
#ifdef EFI_DEBUG
assert_se(BS->FreePages(p->addr, p->n_pages) == EFI_SUCCESS);
#else
(void) BS->FreePages(p->addr, p->n_pages);
#endif
}
#define _cleanup_pages_ _cleanup_(cleanup_pages)
static inline Pages xmalloc_pages(
EFI_ALLOCATE_TYPE type, EFI_MEMORY_TYPE memory_type, size_t n_pages, EFI_PHYSICAL_ADDRESS addr) {
assert_se(BS->AllocatePages(type, memory_type, n_pages, &addr) == EFI_SUCCESS);
return (Pages) {
.addr = addr,
.n_pages = n_pages,
};
}
EFI_STATUS parse_boolean(const char *v, bool *b);
EFI_STATUS efivar_set(const EFI_GUID *vendor, const char16_t *name, const char16_t *value, uint32_t flags);
EFI_STATUS efivar_set_raw(const EFI_GUID *vendor, const char16_t *name, const void *buf, UINTN size, uint32_t flags);
EFI_STATUS efivar_set_uint_string(const EFI_GUID *vendor, const char16_t *name, UINTN i, uint32_t flags);
EFI_STATUS efivar_set_uint32_le(const EFI_GUID *vendor, const char16_t *NAME, uint32_t value, uint32_t flags);
EFI_STATUS efivar_set_uint64_le(const EFI_GUID *vendor, const char16_t *name, uint64_t value, uint32_t flags);
void efivar_set_time_usec(const EFI_GUID *vendor, const char16_t *name, uint64_t usec);
EFI_STATUS efivar_get(const EFI_GUID *vendor, const char16_t *name, char16_t **value);
EFI_STATUS efivar_get_raw(const EFI_GUID *vendor, const char16_t *name, char **buffer, UINTN *size);
EFI_STATUS efivar_get_uint_string(const EFI_GUID *vendor, const char16_t *name, UINTN *i);
EFI_STATUS efivar_get_uint32_le(const EFI_GUID *vendor, const char16_t *name, uint32_t *ret);
EFI_STATUS efivar_get_uint64_le(const EFI_GUID *vendor, const char16_t *name, uint64_t *ret);
EFI_STATUS efivar_get_boolean_u8(const EFI_GUID *vendor, const char16_t *name, bool *ret);
void convert_efi_path(char16_t *path);
char16_t *xstr8_to_path(const char *stra);
void mangle_stub_cmdline(char16_t *cmdline);
EFI_STATUS file_read(EFI_FILE *dir, const char16_t *name, UINTN off, UINTN size, char **content, UINTN *content_size);
EFI_STATUS chunked_read(EFI_FILE *file, size_t *size, void *buf);
static inline void file_closep(EFI_FILE **handle) {
if (!*handle)
return;
(*handle)->Close(*handle);
}
static inline void unload_imagep(EFI_HANDLE *image) {
if (*image)
(void) BS->UnloadImage(*image);
}
/*
* Allocated random UUID, intended to be shared across tools that implement
* the (ESP)\loader\entries\<vendor>-<revision>.conf convention and the
* associated EFI variables.
*/
#define LOADER_GUID \
&(const EFI_GUID) { 0x4a67b082, 0x0a4c, 0x41cf, { 0xb6, 0xc7, 0x44, 0x0b, 0x29, 0xbb, 0x8c, 0x4f } }
#define EFI_GLOBAL_GUID &(const EFI_GUID) EFI_GLOBAL_VARIABLE
void log_error_stall(const char16_t *fmt, ...);
EFI_STATUS log_oom(void);
/* This works just like log_error_errno() from userspace, but requires you
* to provide err a second time if you want to use %r in the message! */
#define log_error_status_stall(err, fmt, ...) \
({ \
log_error_stall(fmt, ##__VA_ARGS__); \
err; \
})
void print_at(UINTN x, UINTN y, UINTN attr, const char16_t *str);
void clear_screen(UINTN attr);
typedef int (*compare_pointer_func_t)(const void *a, const void *b);
void sort_pointer_array(void **array, UINTN n_members, compare_pointer_func_t compare);
EFI_STATUS get_file_info_harder(EFI_FILE *handle, EFI_FILE_INFO **ret, UINTN *ret_size);
EFI_STATUS readdir_harder(EFI_FILE *handle, EFI_FILE_INFO **buffer, UINTN *buffer_size);
bool is_ascii(const char16_t *f);
char16_t **strv_free(char16_t **l);
static inline void strv_freep(char16_t ***p) {
strv_free(*p);
}
EFI_STATUS open_directory(EFI_FILE *root_dir, const char16_t *path, EFI_FILE **ret);
/* Conversion between EFI_PHYSICAL_ADDRESS and pointers is not obvious. The former is always 64bit, even on
* 32bit archs. And gcc complains if we cast a pointer to an integer of a different size. Hence let's do the
* conversion indirectly: first into uintptr_t and then extended to EFI_PHYSICAL_ADDRESS. */
static inline EFI_PHYSICAL_ADDRESS POINTER_TO_PHYSICAL_ADDRESS(const void *p) {
return (EFI_PHYSICAL_ADDRESS) (uintptr_t) p;
}
static inline void *PHYSICAL_ADDRESS_TO_POINTER(EFI_PHYSICAL_ADDRESS addr) {
/* On 32bit systems the address might not be convertible (as pointers are 32bit but
* EFI_PHYSICAL_ADDRESS 64bit) */
assert(addr <= UINTPTR_MAX);
return (void *) (uintptr_t) addr;
}
uint64_t get_os_indications_supported(void);
#ifdef EFI_DEBUG
void debug_break(void);
extern uint8_t _text, _data;
/* Report the relocated position of text and data sections so that a debugger
* can attach to us. See debug-sd-boot.sh for how this can be done. */
# define debug_hook(identity) Print(identity L"@0x%lx,0x%lx\n", POINTER_TO_PHYSICAL_ADDRESS(&_text), POINTER_TO_PHYSICAL_ADDRESS(&_data))
#else
# define debug_hook(identity)
#endif
#ifdef EFI_DEBUG
void hexdump(const char16_t *prefix, const void *data, UINTN size);
#endif
#if defined(__i386__) || defined(__x86_64__)
void beep(UINTN beep_count);
#else
static inline void beep(UINTN beep_count) {}
#endif
EFI_STATUS open_volume(EFI_HANDLE device, EFI_FILE **ret_file);
EFI_STATUS make_file_device_path(EFI_HANDLE device, const char16_t *file, EFI_DEVICE_PATH **ret_dp);
EFI_STATUS device_path_to_str(const EFI_DEVICE_PATH *dp, char16_t **ret);
#if defined(__i386__) || defined(__x86_64__)
bool in_hypervisor(void);
#else
static inline bool in_hypervisor(void) {
return false;
}
#endif
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