#include <vmm/vmm.h>
#include <sys/types.h>
#include <lib/kprintf.h>
#include <sys/descrip.h>
#include <ubixos/kpanic.h>
#include <ubixos/spinlock.h>
#include <ubixos/sched.h>

Include dependency graph for vmm_mmap.c:

Macros
#define	EINVAL 22 /* Invalid argument */

#define	MAP_ALIGNED(n) ((n) << MAP_ALIGNMENT_SHIFT)

#define	MAP_ALIGNED_SUPER MAP_ALIGNED(1) /* align on a superpage */

#define	MAP_ALIGNMENT_MASK MAP_ALIGNED(0xff)

#define	MAP_ALIGNMENT_SHIFT 24

#define	MAP_ANON 0x1000 /* allocated from memory, swap space */

#define	MAP_FILE 0x0000 /* map from file (default) */

#define	MAP_FIXED 0x0010 /* map addr must be exactly as requested */

#define	MAP_HASSEMAPHORE 0x0200 /* region may contain semaphores */

#define	MAP_NORESERVE 0x0040 /* Sun: don't reserve needed swap area */

#define	MAP_NOSYNC 0x0800 /* page to but do not sync underlying file */

#define	MAP_PRIVATE 0x0002 /* changes are private */

#define	MAP_RENAME 0x0020 /* Sun: rename private pages to file */

#define	MAP_RESERVED0080 0x0080 /* previously misimplemented MAP_INHERIT */

#define	MAP_RESERVED0100 0x0100 /* previously unimplemented MAP_NOEXTEND */

#define	MAP_SHARED 0x0001 /* share changes */

#define	MAP_STACK 0x0400 /* region grows down, like a stack */

#define	NBBY 8 /* number of bits in a byte */

#define	PROT_EXEC 0x04 /* pages can be executed */

#define	PROT_NONE 0x00 /* no permissions */

#define	PROT_READ 0x01 /* pages can be read */

#define	PROT_WRITE 0x02 /* pages can be written */

Typedefs
typedef __uint32_t	__vm_size_t

typedef __vm_size_t	vm_size_t

Functions
int	freebsd6_mmap (struct thread td, struct freebsd6_mmap_args uap)

int	sys_mmap (struct thread td, struct sys_mmap_args uap)

int	sys_munmap (struct thread td, struct sys_munmap_args uap)

Macro Definition Documentation

◆ EINVAL

#define EINVAL 22 /* Invalid argument */

Definition at line 40 of file vmm_mmap.c.

◆ MAP_ALIGNED

#define MAP_ALIGNED ( n ) ((n) << MAP_ALIGNMENT_SHIFT)

Definition at line 41 of file vmm_mmap.c.

◆ MAP_ALIGNED_SUPER

#define MAP_ALIGNED_SUPER MAP_ALIGNED(1) /* align on a superpage */

Definition at line 44 of file vmm_mmap.c.

◆ MAP_ALIGNMENT_MASK

#define MAP_ALIGNMENT_MASK MAP_ALIGNED(0xff)

Definition at line 43 of file vmm_mmap.c.

◆ MAP_ALIGNMENT_SHIFT

#define MAP_ALIGNMENT_SHIFT 24

Definition at line 42 of file vmm_mmap.c.

◆ MAP_ANON

#define MAP_ANON 0x1000 /* allocated from memory, swap space */

Definition at line 73 of file vmm_mmap.c.

◆ MAP_FILE

#define MAP_FILE 0x0000 /* map from file (default) */

Definition at line 72 of file vmm_mmap.c.

◆ MAP_FIXED

#define MAP_FIXED 0x0010 /* map addr must be exactly as requested */

Definition at line 60 of file vmm_mmap.c.

◆ MAP_HASSEMAPHORE

#define MAP_HASSEMAPHORE 0x0200 /* region may contain semaphores */

Definition at line 65 of file vmm_mmap.c.

◆ MAP_NORESERVE

#define MAP_NORESERVE 0x0040 /* Sun: don't reserve needed swap area */

Definition at line 62 of file vmm_mmap.c.

◆ MAP_NOSYNC

#define MAP_NOSYNC 0x0800 /* page to but do not sync underlying file */

Definition at line 67 of file vmm_mmap.c.

◆ MAP_PRIVATE

#define MAP_PRIVATE 0x0002 /* changes are private */

Definition at line 59 of file vmm_mmap.c.

◆ MAP_RENAME

#define MAP_RENAME 0x0020 /* Sun: rename private pages to file */

Definition at line 61 of file vmm_mmap.c.

◆ MAP_RESERVED0080

#define MAP_RESERVED0080 0x0080 /* previously misimplemented MAP_INHERIT */

Definition at line 63 of file vmm_mmap.c.

◆ MAP_RESERVED0100

#define MAP_RESERVED0100 0x0100 /* previously unimplemented MAP_NOEXTEND */

Definition at line 64 of file vmm_mmap.c.

◆ MAP_SHARED

#define MAP_SHARED 0x0001 /* share changes */

Definition at line 58 of file vmm_mmap.c.

◆ MAP_STACK

#define MAP_STACK 0x0400 /* region grows down, like a stack */

Definition at line 66 of file vmm_mmap.c.

◆ NBBY

#define NBBY 8 /* number of bits in a byte */

Definition at line 45 of file vmm_mmap.c.

◆ PROT_EXEC

#define PROT_EXEC 0x04 /* pages can be executed */

Definition at line 51 of file vmm_mmap.c.

◆ PROT_NONE

#define PROT_NONE 0x00 /* no permissions */

Definition at line 48 of file vmm_mmap.c.

◆ PROT_READ

#define PROT_READ 0x01 /* pages can be read */

Definition at line 49 of file vmm_mmap.c.

◆ PROT_WRITE

#define PROT_WRITE 0x02 /* pages can be written */

Definition at line 50 of file vmm_mmap.c.

Typedef Documentation

◆ __vm_size_t

typedef __uint32_t __vm_size_t

Definition at line 38 of file vmm_mmap.c.

◆ vm_size_t

typedef __vm_size_t vm_size_t

Definition at line 39 of file vmm_mmap.c.

Function Documentation

◆ freebsd6_mmap()

int freebsd6_mmap	(	struct thread *	td,
		struct freebsd6_mmap_args *	uap
	)

Definition at line 75 of file vmm_mmap.c.

References _current, freebsd6_mmap_args::addr, EINVAL, freebsd6_mmap_args::fd, freebsd6_mmap_args::flags, taskStruct::id, K_PANIC, kprintf(), freebsd6_mmap_args::len, MAP_ALIGNED_SUPER, MAP_ALIGNMENT_MASK, MAP_ALIGNMENT_SHIFT, MAP_ANON, MAP_FIXED, NBBY, freebsd6_mmap_args::pad, PAGE_DEFAULT, PAGE_MASK, PAGE_SHIFT, freebsd6_mmap_args::pos, freebsd6_mmap_args::prot, round_page, vmm_findFreePage(), and vmm_remapPage().

Here is the call graph for this function:

◆ sys_mmap()

int sys_mmap	(	struct thread *	td,
		struct sys_mmap_args *	uap
	)

Definition at line 162 of file vmm_mmap.c.

References _current, sys_mmap_args::addr, bzero, file::fd, sys_mmap_args::fd, fread(), fseek(), getfd(), taskStruct::id, K_PANIC, kpanic(), sys_mmap_args::len, PAGE_DEFAULT, sys_mmap_args::pos, round_page, thread::td_retval, VM_TASK, vmm_findFreePage(), VMM_FREE, vmm_getFreeVirtualPage(), vmm_remapPage(), and vmm_unmapPage().