cregit-Linux how code gets into the kernel

Release 4.14 include/linux/kallsyms.h

Directory: include/linux
/* 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>


#define KSYM_NAME_LEN 128

#define KSYM_SYMBOL_LEN (sizeof("%s+%#lx/%#lx [%s]") + (KSYM_NAME_LEN - 1) + \
                         2*(BITS_PER_LONG*3/10) + (MODULE_NAME_LEN - 1) + 1)

struct module;

#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);

/* Look up a kernel symbol and print it to the kernel messages. */
extern void __print_symbol(const char *fmt, 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);

#else /* !CONFIG_KALLSYMS */


static inline unsigned long kallsyms_lookup_name(const char *name) { return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Andrew Morton16100.00%1100.00%
Total16100.00%1100.00%


static inline int kallsyms_on_each_symbol(int (*fn)(void *, const char *, struct module *, unsigned long), void *data) { return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Anders H Kaseorg35100.00%1100.00%
Total35100.00%1100.00%


static inline int kallsyms_lookup_size_offset(unsigned long addr, unsigned long *symbolsize, unsigned long *offset) { return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Franck Bui-Huu24100.00%1100.00%
Total24100.00%1100.00%


static inline const char *kallsyms_lookup(unsigned long addr, unsigned long *symbolsize, unsigned long *offset, char **modname, char *namebuf) { return NULL; }

Contributors

PersonTokensPropCommitsCommitProp
Ingo Molnar2468.57%133.33%
Rusty Russell720.00%133.33%
Andi Kleen411.43%133.33%
Total35100.00%3100.00%


static inline int sprint_symbol(char *buffer, unsigned long addr) { *buffer = '\0'; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Robert S Peterson1356.52%150.00%
Stephen Boyd1043.48%150.00%
Total23100.00%2100.00%


static inline int sprint_symbol_no_offset(char *buffer, unsigned long addr) { *buffer = '\0'; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Stephen Boyd1356.52%150.00%
Robert S Peterson1043.48%150.00%
Total23100.00%2100.00%


static inline int sprint_backtrace(char *buffer, unsigned long addr) { *buffer = '\0'; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Namhyung Kim23100.00%1100.00%
Total23100.00%1100.00%


static inline int lookup_symbol_name(unsigned long addr, char *symname) { return -ERANGE; }

Contributors

PersonTokensPropCommitsCommitProp
Alexey Dobriyan19100.00%1100.00%
Total19100.00%1100.00%


static inline int lookup_symbol_attrs(unsigned long addr, unsigned long *size, unsigned long *offset, char *modname, char *name) { return -ERANGE; }

Contributors

PersonTokensPropCommitsCommitProp
Alexey Dobriyan33100.00%1100.00%
Total33100.00%1100.00%

/* Stupid that this does nothing, but I didn't create this mess. */ #define __print_symbol(fmt, addr) #endif /*CONFIG_KALLSYMS*/ /* This macro allows us to keep printk typechecking */ static __printf(1, 2) void __check_printsym_format(const char *fmt, ...) { } static inline void print_symbol(const char *fmt, unsigned long addr) { __check_printsym_format(fmt, ""); __print_symbol(fmt, (unsigned long) __builtin_extract_return_addr((void *)addr)); } static inline void print_ip_sym(unsigned long ip) { printk("[<%p>] %pS\n", (void *) ip, (void *) ip); } #endif /*_LINUX_KALLSYMS_H*/

Overall Contributors

PersonTokensPropCommitsCommitProp
Alexey Dobriyan9016.70%29.52%
Anders H Kaseorg6812.62%14.76%
Ingo Molnar6512.06%14.76%
Franck Bui-Huu437.98%14.76%
Robert S Peterson417.61%14.76%
Rusty Russell407.42%14.76%
Stephen Boyd366.68%14.76%
Namhyung Kim366.68%14.76%
Heiko Carstens295.38%29.52%
Andrew Morton275.01%14.76%
Joe Perches224.08%14.76%
Vegard Nossum224.08%29.52%
Andi Kleen81.48%14.76%
Mika Kukkonen30.56%14.76%
Kamalesh Babulal30.56%14.76%
Adrian Bunk30.56%14.76%
Tejun Heo20.37%14.76%
Greg Kroah-Hartman10.19%14.76%
Total539100.00%21100.00%
Directory: include/linux
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