sambuc/codezero
1
0
Fork 0
mirror of https://github.com/drasko/codezero.git synced 2026-01-14 20:03:16 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity

Wiring between mm0 page cache and vfs almost what it should look like.

Browse Source 
This implements the infrastructure for read/write system calls where
file content is first searched in mm0's page cache and then read-in
or written via the vfs read/write functions.
	modified:   tasks/fs0/src/syscalls.c
	modified:   tasks/mm0/include/lib/bit.h
	modified:   tasks/mm0/include/lib/idpool.h
	modified:   tasks/mm0/include/task.h
	modified:   tasks/mm0/include/vm_area.h
	modified:   tasks/mm0/main.c
	modified:   tasks/mm0/src/devzero.c
	modified:   tasks/mm0/src/fault.c
	new file:   tasks/mm0/src/file.c
	modified:   tasks/mm0/src/init.c
	modified:   tasks/mm0/src/lib/bit.c
	modified:   tasks/mm0/src/lib/idpool.c
	modified:   tasks/mm0/src/task.c
This commit is contained in:
Bahadir Balban
2008-02-18 22:26:39 +00:00
parent 0fdc64ba2d
commit d67d6b84a9
13 changed files with 365 additions and 57 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
tasks/mm0/src/task.c
View File

@@ -20,7 +20,7 @@
#include <string.h>
#include <vm_area.h>
#include <memory.h>
#include <file.h>
struct tcb_head {
struct list_head list;
@@ -73,18 +73,6 @@ struct tcb *create_init_tcb(struct tcb_head *tcbs)
return task;
}
/* Create temporary run-time files in memory to test with mmap */
struct vm_file *create_init_vmfile(struct list_head *vmfile_head)
{
struct vm_file *file = kzalloc(sizeof(*file));
INIT_LIST_HEAD(&file->list);
INIT_LIST_HEAD(&file->page_cache_list);
list_add(&file->list, vmfile_head);
return file;
}
int start_boot_tasks(struct initdata *initdata, struct tcb_head *tcbs)
{
int err;
@@ -119,16 +107,17 @@ int start_boot_tasks(struct initdata *initdata, struct tcb_head *tcbs)
pc = USER_AREA_START;
/* Create vm file and tcb */
file = create_init_vmfile(&initdata->boot_file_list);
file = vmfile_alloc_init();
task = create_init_tcb(tcbs);
/*
* For boot files, we use the physical address of the memory
* file as its mock-up inode.
*/
file->inode.i_addr = img->phys_start;
file->vnum = img->phys_start;
file->length = img->phys_end - img->phys_start;
file->pager = &default_file_pager;
file->pager = &boot_file_pager;
list_add(&file->list, &initdata->boot_file_list);
/* mmap each task's physical image to task's address space. */
if ((err = do_mmap(file, 0, task, USER_AREA_START,