vasilito
dc68054305
- Restore 29 recipe symlinks (libdrm, qtbase, dbus, sddm, pipewire, etc.) - Restore 33 patches (KDE, libdrm, mesa, pipewire, sddm, wireplumber) - Restore 20+ local/scripts (audit, lint, test, build helpers) - Restore src/cook/scheduler.rs, status.rs, gnu-config/ - Restore scripts/patch-inclusion-gate.sh, run_mini1.sh, validate-collision-log.sh - Recover TLC source from HEAD (was overwritten by 0.2.3 checkout) - Recover 11 local/docs plans from HEAD (were overwritten) - Recover qt6-wayland-smoke symlink from HEAD - Fix MOTD: remove garbled ASCII art, use clean text - Update version: 0.2.0 -> 0.2.4 in os-release, motd, config - Reduce filesystem_size: 1536 -> 512 MiB - Add ABSOLUTE RULE to AGENTS.md: never delete/ignore packages - Reduce pcid scheme log verbosity: info -> debug
87 lines
2.0 KiB
C
87 lines
2.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* Clang Control Flow Integrity (CFI) support.
|
|
*
|
|
* Copyright (C) 2022 Google LLC
|
|
*/
|
|
#ifndef _LINUX_CFI_H
|
|
#define _LINUX_CFI_H
|
|
|
|
#include <linux/bug.h>
|
|
#include <linux/module.h>
|
|
#include <asm/cfi.h>
|
|
|
|
#ifdef CONFIG_CFI
|
|
extern bool cfi_warn;
|
|
|
|
enum bug_trap_type report_cfi_failure(struct pt_regs *regs, unsigned long addr,
|
|
unsigned long *target, u32 type);
|
|
|
|
static inline enum bug_trap_type report_cfi_failure_noaddr(struct pt_regs *regs,
|
|
unsigned long addr)
|
|
{
|
|
return report_cfi_failure(regs, addr, NULL, 0);
|
|
}
|
|
|
|
#ifndef cfi_get_offset
|
|
/*
|
|
* Returns the CFI prefix offset. By default, the compiler emits only
|
|
* a 4-byte CFI type hash before the function. If an architecture
|
|
* uses -fpatchable-function-entry=N,M where M>0 to change the prefix
|
|
* offset, they must override this function.
|
|
*/
|
|
static inline int cfi_get_offset(void)
|
|
{
|
|
return 4;
|
|
}
|
|
#endif
|
|
|
|
#ifndef cfi_get_func_hash
|
|
static inline u32 cfi_get_func_hash(void *func)
|
|
{
|
|
u32 hash;
|
|
|
|
if (get_kernel_nofault(hash, func - cfi_get_offset()))
|
|
return 0;
|
|
|
|
return hash;
|
|
}
|
|
#endif
|
|
|
|
/* CFI type hashes for BPF function types */
|
|
extern u32 cfi_bpf_hash;
|
|
extern u32 cfi_bpf_subprog_hash;
|
|
|
|
#else /* CONFIG_CFI */
|
|
|
|
static inline int cfi_get_offset(void) { return 0; }
|
|
static inline u32 cfi_get_func_hash(void *func) { return 0; }
|
|
|
|
#define cfi_bpf_hash 0U
|
|
#define cfi_bpf_subprog_hash 0U
|
|
|
|
#endif /* CONFIG_CFI */
|
|
|
|
#ifdef CONFIG_ARCH_USES_CFI_TRAPS
|
|
bool is_cfi_trap(unsigned long addr);
|
|
#else
|
|
static inline bool is_cfi_trap(unsigned long addr) { return false; }
|
|
#endif
|
|
|
|
#ifdef CONFIG_MODULES
|
|
#ifdef CONFIG_ARCH_USES_CFI_TRAPS
|
|
void module_cfi_finalize(const Elf_Ehdr *hdr, const Elf_Shdr *sechdrs,
|
|
struct module *mod);
|
|
#else
|
|
static inline void module_cfi_finalize(const Elf_Ehdr *hdr,
|
|
const Elf_Shdr *sechdrs,
|
|
struct module *mod) {}
|
|
#endif /* CONFIG_ARCH_USES_CFI_TRAPS */
|
|
#endif /* CONFIG_MODULES */
|
|
|
|
#ifndef CFI_NOSEAL
|
|
#define CFI_NOSEAL(x)
|
|
#endif
|
|
|
|
#endif /* _LINUX_CFI_H */
|