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#include "kernel.h"
#include "fd.h"
#include "fifo.h"
#include "kmalloc.h"
#include "ext2.h"
#include "log.h"
#include "lib/string/string.h"
#include "lib/printf/printf.h"
#include "ringbuffer.h"
bool fd_write(fd* f,uint8_t c)
{
return f->write(f->data,c);
}
uint8_t fd_read(fd* f)
{
return f->read(f->data);
}
bool fd_has(fd* f)
{
return f->has(f->data);
}
bool fd_eof(fd* f)
{
return f->eof(f->data);
}
bool fd_close(fd* f)
{
return f->close(f->data);
}
//----
void* ext2_init(char *path)
{
uint32_t *data=kballoc(1);
uint32_t inode= ext2_filename_to_inode(VMEM_EXT2_RAMIMAGE,path);
data[0]=inode;// inode
data[1]=0; //pos
return data;
}
void ext2_write(void* x,uint8_t b)
{
kpanic("not impl");
}
uint8_t ext2_read(uint32_t* data)
{
char c;
ext2_read_inode(VMEM_EXT2_RAMIMAGE,data[0],&c,&data[1],1);
return c;
}
bool ext2_has(uint32_t* data)
{
return 1;
}
bool ext2_eof(uint32_t* data)
{
uint32_t save=data[1];
uint32_t c=ext2_read_inode(VMEM_EXT2_RAMIMAGE,data[0],&c,&data[1],1);
data[1]=save;
return (c==0);
}
void ext2_close(void* x)
{
kbfree(x);
}
uint8_t sysfs_get(uint32_t *data)
{
return ringbuffer_get(data);
}
void sysfs_write(void* x,uint8_t b)
{
uint32_t **pp=x+sizeof(ringbuffer);
void (*p)(uint32_t v)=*pp;
uint32_t *val=x+sizeof(ringbuffer)+4;
val[val[0]]=b;
if(val[0]==4) // 4bytes / 32bit
{
val[0]=1;
p(val[1]+256*val[2]+256*256*val[3]+256*256*256*val[4]);
}
val[0]+=1;
}
bool sysfs_has(uint32_t *data)
{
return true;
}
bool sysfs_eof(uint32_t *data)
{
return !ringbuffer_has(data);
}
void sysfs_close(uint32_t *data)
{
ringbuffer_free(data); // free ringbuffer buffer
kbfree(data); // free memory holding ringbuffer information
}
void pipe_close(uint32_t *data)
{
ringbuffer *r=data;
ringbuffer_free(data); // free ringbuffer buffer
kbfree(data); // free memory holding ringbuffer information
}
void get_sysfs_data(ringbuffer *r,char *format_string, ...)
{
char buf[256];
va_list va;
va_start(va,format_string);
tfp_vsprintf(buf,format_string,va);
va_end(va);
for(int i=0;i<strlen(buf);i++)
ringbuffer_put(r,buf[i]);
ringbuffer_put(r,'\n');
}
bool fifo_eof(uint32_t* data)
{
return false;
}
// TODO remove and use fd_from_ringbuffer?
fd fd_from_fifo(fifo* fif)
{
fd f;
f.type=FD_TYPE_FIFO_BUFFERED;
f.data=fif;
f.read=fifo_get;
f.write=fifo_put;
f.eof=fifo_eof;
// f.close=fd_close; //TODO.. etc also otehr and cleanups
f.has=fifo_has;
return f;
}
fd fd_from_pipe()
{
fd f;
f.type=FD_TYPE_PIPE;
f.data=kballoc(1);
ringbuffer r=ringbuffer_init(1);
memcpy(f.data,&r,sizeof(ringbuffer));
/*
f.read=sysfs_get;
f.write=0;
f.has=sysfs_has;
f.eof=sysfs_eof;
*/
f.close=pipe_close;
return f;
}
fd fd_from_path(char* path)
{
fd f;
f.type=FD_TYPE_EXT2_FILE;
f.data=ext2_init(path);
f.read=ext2_read;
f.write=ext2_write;
f.close=ext2_close;
f.eof=ext2_eof;
f.has=ext2_has;
return f;
}
fd fd_from_sysfs(void(*g)(ringbuffer *r,void (*f)(ringbuffer *r,char *fmt, ...)),void (*h)(uint32_t in))
{
fd f;
f.type=FD_TYPE_SYSFS;
f.data=kballoc(1);
uint32_t **pp=f.data+sizeof(ringbuffer);
*pp=h;
uint32_t *val=f.data+sizeof(ringbuffer)+4;
val[0]=1; // waiting for first byte of the 32bit value
ringbuffer r=ringbuffer_init(1);
g(&r,get_sysfs_data);
memcpy(f.data,&r,sizeof(ringbuffer));
f.read=sysfs_get;
f.write=sysfs_write;
f.close=sysfs_close;
f.has=sysfs_has;
f.eof=sysfs_eof;
return f;
}
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