1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
118 lines
1.8 KiB
C
118 lines
1.8 KiB
C
/*
|
|
* linux/fs/befs/attribute.c
|
|
*
|
|
* Copyright (C) 2002 Will Dyson <will_dyson@pobox.com>
|
|
*
|
|
* Many thanks to Dominic Giampaolo, author of "Practical File System
|
|
* Design with the Be File System", for such a helpful book.
|
|
*
|
|
*/
|
|
|
|
#include <linux/fs.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/string.h>
|
|
|
|
#include "befs.h"
|
|
#include "endian.h"
|
|
|
|
#define SD_DATA(sd)\
|
|
(void*)((char*)sd + sizeof(*sd) + (sd->name_size - sizeof(sd->name)))
|
|
|
|
#define SD_NEXT(sd)\
|
|
(befs_small_data*)((char*)sd + sizeof(*sd) + (sd->name_size - \
|
|
sizeof(sd->name) + sd->data_size))
|
|
|
|
int
|
|
list_small_data(struct super_block *sb, befs_inode * inode, filldir_t filldir);
|
|
|
|
befs_small_data *
|
|
find_small_data(struct super_block *sb, befs_inode * inode,
|
|
const char *name);
|
|
int
|
|
read_small_data(struct super_block *sb, befs_inode * inode,
|
|
befs_small_data * sdata, void *buf, size_t bufsize);
|
|
|
|
/**
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*/
|
|
befs_small_data *
|
|
find_small_data(struct super_block *sb, befs_inode * inode, const char *name)
|
|
{
|
|
befs_small_data *sdata = inode->small_data;
|
|
|
|
while (sdata->type != 0) {
|
|
if (strcmp(name, sdata->name) != 0) {
|
|
return sdata;
|
|
}
|
|
sdata = SD_NEXT(sdata);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*/
|
|
int
|
|
read_small_data(struct super_block *sb, befs_inode * inode,
|
|
const char *name, void *buf, size_t bufsize)
|
|
{
|
|
befs_small_data *sdata;
|
|
|
|
sdata = find_small_data(sb, inode, name);
|
|
if (sdata == NULL)
|
|
return BEFS_ERR;
|
|
else if (sdata->data_size > bufsize)
|
|
return BEFS_ERR;
|
|
|
|
memcpy(buf, SD_DATA(sdata), sdata->data_size);
|
|
|
|
return BEFS_OK;
|
|
}
|
|
|
|
/**
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*/
|
|
int
|
|
list_small_data(struct super_block *sb, befs_inode * inode)
|
|
{
|
|
|
|
}
|
|
|
|
/**
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*/
|
|
int
|
|
list_attr(struct super_block *sb, befs_inode * inode)
|
|
{
|
|
|
|
}
|
|
|
|
/**
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*
|
|
*/
|
|
int
|
|
read_attr(struct super_block *sb, befs_inode * inode)
|
|
{
|
|
|
|
}
|