#include "mount.h"
#include <stdlib.h>
#include "sysfs.h"
#include "mem.h"
#include "kmalloc.h"
#include "mount.h"

#include "log.h"

#include "lib/string/string.h"

static const char* names[] = {"/mem","/kmalloc","/mount"};

static uint32_t map[]={mem_sysfs,mem_sysfs_set,
		       kmalloc_sysfs,NULL,
		       mount_sysfs,NULL,
		      };
static uint32_t count=3;

/* mount interface */

fd sysfs_file_open(mount *m,char *path)
{
    klog("sysfs file open: %s",path);
    for (int i=0;i<count;i++)
    {
	if(!strcmp(path,names[i]))
	    return fd_from_sysfs(map[2*i],map[2*i+1]);
    }
    return fd_from_sysfs(map[0],map[1]);
}

int sysfs_read_dir(mount *m,char *path, fs_dirent *dirs, uint32_t *pos)
{
    if(*pos>=count)return 0;
    memcpy(dirs->name,names[*pos],strlen(names[*pos])+1);
    dirs->inode=0;
    *pos+=1;
    return 1;
}

void sysfs_mount(char* path)
{
    mount m;
    m.type=MOUNT_TYPE_SYS;
    memcpy(m.path,path,strlen(path)+1);
    m.mount_file_open=sysfs_file_open;
    m.mount_read_dir=sysfs_read_dir;
    mount_add(m);
}