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Directory : /proc/23604/root/usr/src/linux-headers-4.4.0-256/include/linux/

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Current File : /proc/23604/root/usr/src/linux-headers-4.4.0-256/include/linux/moduleloader.h

#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;
}
#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;
}
#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

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