mm.h File Reference

#include <linux/autoconf.h>
#include <linux/kernel.h>
#include <linux/compiler.h>
#include <linux/fs.h>
#include <linux/mount.h>
#include <linux/mm_types.h>
#include <linux/printk.h>
#include <linux/init.h>
#include <linux/uaccess.h>
#include <Mm/vmmngr.h>

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Classes
struct	vm_operations_struct
struct	vm_area_struct
struct	vm_area_desc

Macros
#define	VMA_NORESERVE_BIT   0
#define	min(a, b)   (((a) < (b)) ? (a) : (b))
#define	min_t(type, a, b)   ((type)(a) < (type)(b) ? (type)(a) : (type)(b))
#define	ARRAY_SIZE(arr)   (sizeof(arr) / sizeof((arr)[0]))
#define	fallthrough   __attribute__((fallthrough))
#define	EFAULT   14
#define	EFBIG   27
#define	ENXIO   6
#define	ERESTARTSYS   512
#define	need_resched()   0
#define	cond_resched()   ((void)0)
#define	signal_pending(p)   0
#define	current   ((void*)0)
#define	MEM_MAJOR   1
#define	SEEK_SET   0
#define	SEEK_CUR   1
#define	SEEK_END   2
#define	FMODE_NOWAIT   0x00080000
#define	FOP_UNSIGNED_OFFSET   0x0001
#define	VM_PFNMAP   0x00000400 /* the whole range is one page table */
#define	VM_MIXEDMAP   0x00000100
#define	VM_IO   0x00004000 /* mapped I/O or similar */
#define	VM_DONTEXPAND   0x00080000 /* mremap may not grow this */
#define	VM_DONTDUMP   0x02000000 /* leave out of the core dump */
#define	PAGE_ALIGNED(addr)   (((uintptr_t)(addr) & (PAGE_SIZE - 1)) == 0)
#define	VMA_SHARED_BIT   3

Typedefs
typedef uint64_t	pgprot_t
typedef vma_flags_t	vm_flags_t

Functions
int	__register_chrdev (unsigned int major, unsigned int baseminor, unsigned int count, const char *name, const void *fops)
void	__unregister_chrdev (unsigned int major, unsigned int baseminor, unsigned int count, const char *name)
int	valid_phys_addr_range (phys_addr_t addr, size_t count)
int	valid_mmap_phys_addr_range (unsigned long pfn, size_t size)
int	range_is_allowed (unsigned long pgoff, unsigned long size)
int	phys_mem_access_prot_allowed (struct file *file, unsigned long pfn, unsigned long size, pgprot_t *vma_prot)
unsigned long	mm_get_unmapped_area (struct file *file, unsigned long addr, unsigned long len, unsigned long pgoff, unsigned long flags)

Variables
t t typedef unsigned long	vma_flags_t
const struct file_operations	kmsg_fops

Macro Definition Documentation

ARRAY_SIZE

#define ARRAY_SIZE

(

arr

)

(sizeof(arr) / sizeof((arr)[0]))

cond_resched

#define cond_resched

(

)

((void)0)

current

#define current   ((void*)0)

EFAULT

#define EFAULT   14

EFBIG

#define EFBIG   27

ENXIO

#define ENXIO   6

ERESTARTSYS

#define ERESTARTSYS   512

fallthrough

#define fallthrough   __attribute__((fallthrough))

FMODE_NOWAIT

#define FMODE_NOWAIT   0x00080000

FOP_UNSIGNED_OFFSET

#define FOP_UNSIGNED_OFFSET   0x0001

MEM_MAJOR

#define MEM_MAJOR   1

min

#define min	(		a,
			b
	)		(((a) < (b)) ? (a) : (b))

min_t

#define min_t	(		type,
			a,
			b
	)		((type)(a) < (type)(b) ? (type)(a) : (type)(b))

need_resched

#define need_resched

(

)

0

PAGE_ALIGNED

#define PAGE_ALIGNED

(

addr

)

(((uintptr_t)(addr) & (PAGE_SIZE - 1)) == 0)

SEEK_CUR

#define SEEK_CUR   1

SEEK_END

#define SEEK_END   2

SEEK_SET

#define SEEK_SET   0

signal_pending

#define signal_pending

(

p

)

0

VM_DONTDUMP

#define VM_DONTDUMP   0x02000000 /* leave out of the core dump */

VM_DONTEXPAND

#define VM_DONTEXPAND   0x00080000 /* mremap may not grow this */

VM_IO

#define VM_IO   0x00004000 /* mapped I/O or similar */

VM_MIXEDMAP

#define VM_MIXEDMAP   0x00000100

VM_PFNMAP

#define VM_PFNMAP   0x00000400 /* the whole range is one page table */

VMA_NORESERVE_BIT

#define VMA_NORESERVE_BIT   0

VMA_SHARED_BIT

#define VMA_SHARED_BIT   3

Typedef Documentation

pgprot_t

typedef uint64_t pgprot_t

vm_flags_t

typedef vma_flags_t vm_flags_t

Function Documentation

__register_chrdev()

int __register_chrdev ( unsigned int  major, unsigned int  baseminor, unsigned int  count, const char *  name, const void *  fops  )

extern

__unregister_chrdev()

void __unregister_chrdev ( unsigned int  major, unsigned int  baseminor, unsigned int  count, const char *  name  )

extern

mm_get_unmapped_area()

unsigned long mm_get_unmapped_area	(	struct file *	file,
		unsigned long	addr,
		unsigned long	len,
		unsigned long	pgoff,
		unsigned long	flags
	)

phys_mem_access_prot_allowed()

int phys_mem_access_prot_allowed	(	struct file *	file,
		unsigned long	pfn,
		unsigned long	size,
		pgprot_t *	vma_prot
	)

range_is_allowed()

int range_is_allowed	(	unsigned long	pgoff,
		unsigned long	size
	)

valid_mmap_phys_addr_range()

int valid_mmap_phys_addr_range	(	unsigned long	pfn,
		size_t	size
	)

valid_phys_addr_range()

int valid_phys_addr_range	(	phys_addr_t	addr,
		size_t	count
	)

Variable Documentation

kmsg_fops

const struct file_operations kmsg_fops

extern

vma_flags_t

t t typedef unsigned long vma_flags_t