cregit-Linux how code gets into the kernel

Release 4.15 include/linux/moduleloader.h

Directory: include/linux
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_MODULELOADER_H

#define _LINUX_MODULELOADER_H
/* The stuff needed for archs to support modules. */

#include <linux/module.h>
#include <linux/elf.h>

/* These may be implemented by architectures that need to hook into the
 * module loader code.  Architectures that don't need to do anything special
 * can just rely on the 'weak' default hooks defined in kernel/module.c.
 * Note, however, that at least one of apply_relocate or apply_relocate_add
 * must be implemented by each architecture.
 */

/* Adjust arch-specific sections.  Return 0 on success.  */
int module_frob_arch_sections(Elf_Ehdr *hdr,
			      Elf_Shdr *sechdrs,
			      char *secstrings,
			      struct module *mod);

/* Additional bytes needed by arch in front of individual sections */
unsigned int arch_mod_section_prepend(struct module *mod, unsigned int section);

/* Allocator used for allocating struct module, core sections and init
   sections.  Returns NULL on failure. */
void *module_alloc(unsigned long size);

/* Free memory returned from module_alloc. */
void module_memfree(void *module_region);

/*
 * Apply the given relocation to the (simplified) ELF.  Return -error
 * or 0.
 */
#ifdef CONFIG_MODULES_USE_ELF_REL
int apply_relocate(Elf_Shdr *sechdrs,
		   const char *strtab,
		   unsigned int symindex,
		   unsigned int relsec,
		   struct module *mod);
#else

static inline int apply_relocate(Elf_Shdr *sechdrs, const char *strtab, unsigned int symindex, unsigned int relsec, struct module *me) { printk(KERN_ERR "module %s: REL relocation unsupported\n", module_name(me)); return -ENOEXEC; }

Contributors

PersonTokensPropCommitsCommitProp
David Howells4193.18%150.00%
Rusty Russell36.82%150.00%
Total44100.00%2100.00%

#endif /* * Apply the given add relocation to the (simplified) ELF. Return * -error or 0 */ #ifdef CONFIG_MODULES_USE_ELF_RELA int apply_relocate_add(Elf_Shdr *sechdrs, const char *strtab, unsigned int symindex, unsigned int relsec, struct module *mod); #else
static inline int apply_relocate_add(Elf_Shdr *sechdrs, const char *strtab, unsigned int symindex, unsigned int relsec, struct module *me) { printk(KERN_ERR "module %s: REL relocation unsupported\n", module_name(me)); return -ENOEXEC; }

Contributors

PersonTokensPropCommitsCommitProp
David Howells4193.18%150.00%
Rusty Russell36.82%150.00%
Total44100.00%2100.00%

#endif /* Any final processing of module before access. Return -error or 0. */ int module_finalize(const Elf_Ehdr *hdr, const Elf_Shdr *sechdrs, struct module *mod); /* Any cleanup needed when module leaves. */ void module_arch_cleanup(struct module *mod); /* Any cleanup before freeing mod->module_init */ void module_arch_freeing_init(struct module *mod); #ifdef CONFIG_KASAN #include <linux/kasan.h> #define MODULE_ALIGN (PAGE_SIZE << KASAN_SHADOW_SCALE_SHIFT) #else #define MODULE_ALIGN PAGE_SIZE #endif #endif

Overall Contributors

PersonTokensPropCommitsCommitProp
Rusty Russell14450.17%650.00%
David Howells9834.15%18.33%
Andrey Ryabinin186.27%18.33%
Helge Deller155.23%18.33%
Andrew Morton103.48%18.33%
Greg Kroah-Hartman10.35%18.33%
Jonas Bonn10.35%18.33%
Total287100.00%12100.00%
Directory: include/linux
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