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Файловый менеджер - Редактировать - /usr/src/linux-headers-5.4.0-200/include/linux/kallsyms.h

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/* SPDX-License-Identifier: GPL-2.0 / / Rewritten and vastly simplified by Rusty Russell for in-kernel * module loader: * Copyright 2002 Rusty Russell <rusty@rustcorp.com.au> IBM Corporation / #ifndef _LINUX_KALLSYMS_H #define _LINUX_KALLSYMS_H #include <linux/errno.h> #include <linux/kernel.h> #include <linux/stddef.h> #include <linux/mm.h> #include <linux/module.h> #include <asm/sections.h> #define KSYM_NAME_LEN 128 #define KSYM_SYMBOL_LEN (sizeof("%s+%#lx/%#lx [%s]") + (KSYM_NAME_LEN - 1) + \ 2(BITS_PER_LONG3/10) + (MODULE_NAME_LEN - 1) + 1) struct cred; struct module; static inline int is_kernel_inittext(unsigned long addr) { if (addr >= (unsigned long)_sinittext && addr <= (unsigned long)_einittext) return 1; return 0; } static inline int is_kernel_text(unsigned long addr) { if ((addr >= (unsigned long)_stext && addr <= (unsigned long)_etext) \|\| arch_is_kernel_text(addr)) return 1; return in_gate_area_no_mm(addr); } static inline int is_kernel(unsigned long addr) { if (addr >= (unsigned long)_stext && addr <= (unsigned long)_end) return 1; return in_gate_area_no_mm(addr); } static inline int is_ksym_addr(unsigned long addr) { if (IS_ENABLED(CONFIG_KALLSYMS_ALL)) return is_kernel(addr); return is_kernel_text(addr) \|\| is_kernel_inittext(addr); } static inline void dereference_symbol_descriptor(void ptr) { #ifdef HAVE_DEREFERENCE_FUNCTION_DESCRIPTOR struct module mod; ptr = dereference_kernel_function_descriptor(ptr); if (is_ksym_addr((unsigned long)ptr)) return ptr; preempt_disable(); mod = __module_address((unsigned long)ptr); preempt_enable(); if (mod) ptr = dereference_module_function_descriptor(mod, ptr); #endif return ptr; } #ifdef CONFIG_KALLSYMS /* Lookup the address for a symbol. Returns 0 if not found. / unsigned long kallsyms_lookup_name(const char name); /* Call a function on each kallsyms symbol in the core kernel / int kallsyms_on_each_symbol(int (fn)(void , const char , struct module , unsigned long), void data); extern int kallsyms_lookup_size_offset(unsigned long addr, unsigned long symbolsize, unsigned long offset); /* Lookup an address. modname is set to NULL if it's in the kernel. / const char kallsyms_lookup(unsigned long addr, unsigned long symbolsize, unsigned long offset, char *modname, char namebuf); /* Look up a kernel symbol and return it in a text buffer. / extern int sprint_symbol(char buffer, unsigned long address); extern int sprint_symbol_no_offset(char buffer, unsigned long address); extern int sprint_backtrace(char buffer, unsigned long address); int lookup_symbol_name(unsigned long addr, char symname); int lookup_symbol_attrs(unsigned long addr, unsigned long size, unsigned long offset, char modname, char name); / How and when do we show kallsyms values? / extern bool kallsyms_show_value(const struct cred cred); #else /* !CONFIG_KALLSYMS / static inline unsigned long kallsyms_lookup_name(const char name) { return 0; } static inline int kallsyms_on_each_symbol(int (fn)(void , const char , struct module , unsigned long), void data) { return 0; } static inline int kallsyms_lookup_size_offset(unsigned long addr, unsigned long symbolsize, unsigned long offset) { return 0; } static inline const char kallsyms_lookup(unsigned long addr, unsigned long symbolsize, unsigned long offset, char *modname, char namebuf) { return NULL; } static inline int sprint_symbol(char buffer, unsigned long addr) { buffer = '\0'; return 0; } static inline int sprint_symbol_no_offset(char buffer, unsigned long addr) { buffer = '\0'; return 0; } static inline int sprint_backtrace(char buffer, unsigned long addr) { buffer = '\0'; return 0; } static inline int lookup_symbol_name(unsigned long addr, char symname) { return -ERANGE; } static inline int lookup_symbol_attrs(unsigned long addr, unsigned long size, unsigned long offset, char modname, char name) { return -ERANGE; } static inline bool kallsyms_show_value(const struct cred cred) { return false; } #endif /CONFIG_KALLSYMS/ static inline void print_ip_sym(unsigned long ip) { printk("[<%px>] %pS\n", (void ) ip, (void ) ip); } #endif /_LINUX_KALLSYMS_H/

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