1c7651f437
When a module is loaded, its symbols' Elf_Sym information is stored in a symtab. Further, type information is also captured. Since Elf_Sym has no type field, historically the st_info field has been hijacked for storing type: st_info was overwritten. commit5439c985c5("module: Overwrite st_size instead of st_info") changes that practice, as its one-liner indicates. Unfortunately, this change overwrites symbol size, information that a tool like DTrace expects to find. Allocate a typetab array to store type information so that no Elf_Sym field needs to be overwritten. Fixes:5439c985c5("module: Overwrite st_size instead of st_info") Signed-off-by: Eugene Loh <eugene.loh@oracle.com> Reviewed-by: Nick Alcock <nick.alcock@oracle.com> [jeyu: renamed typeoff -> typeoffs ] Signed-off-by: Jessica Yu <jeyu@kernel.org>
36 lines
989 B
C
36 lines
989 B
C
/* Module internals
|
|
*
|
|
* Copyright (C) 2012 Red Hat, Inc. All Rights Reserved.
|
|
* Written by David Howells (dhowells@redhat.com)
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public Licence
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the Licence, or (at your option) any later version.
|
|
*/
|
|
|
|
#include <linux/elf.h>
|
|
#include <asm/module.h>
|
|
|
|
struct load_info {
|
|
const char *name;
|
|
/* pointer to module in temporary copy, freed at end of load_module() */
|
|
struct module *mod;
|
|
Elf_Ehdr *hdr;
|
|
unsigned long len;
|
|
Elf_Shdr *sechdrs;
|
|
char *secstrings, *strtab;
|
|
unsigned long symoffs, stroffs, init_typeoffs, core_typeoffs;
|
|
struct _ddebug *debug;
|
|
unsigned int num_debug;
|
|
bool sig_ok;
|
|
#ifdef CONFIG_KALLSYMS
|
|
unsigned long mod_kallsyms_init_off;
|
|
#endif
|
|
struct {
|
|
unsigned int sym, str, mod, vers, info, pcpu;
|
|
} index;
|
|
};
|
|
|
|
extern int mod_verify_sig(const void *mod, struct load_info *info);
|