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Add cleaner ext2 filesystem implementation

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Signed-off-by: Laurent Vivier <Laurent@vivier.eu>



git-svn-id: svn://coreboot.org/openbios/trunk/openbios-devel@627 f158a5a8-5612-0410-a976-696ce0be7e32
This commit is contained in:
Laurent Vivier
2009-11-22 09:47:08 +00:00
parent d2cc5db789
commit 26c129730b
21 changed files with 1381 additions and 2 deletions
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65
fs/ext2/ext2_open.c Normal file
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/*
*
* (c) 2008-2009 Laurent Vivier <Laurent@lvivier.info>
*
* This file has been copied from EMILE, http://emile.sf.net
*
*/
#include "libext2.h"
#include "ext2.h"
#include "ext2_utils.h"
ext2_FILE* ext2_open(ext2_VOLUME *volume, const char* pathname)
{
ext2_FILE *file;
struct ext2_inode *inode;
int ino;
int ret;
ino = ext2_seek_name(volume, pathname);
if (ino == 0)
return NULL;
inode = (struct ext2_inode*)malloc(sizeof(struct ext2_inode));
if (inode == NULL)
return NULL;
ret = ext2_get_inode(volume, ino, inode);
if (ret == -1) {
free(inode);
return NULL;
}
if (S_ISLNK(inode->i_mode)) {
static char buffer[1024];
int i, last = 0;
strcpy(buffer, pathname);
for (i = 0; buffer[i]; i++)
if (buffer[i] == '\\')
last = i;
buffer[last] = '\\';
strcpy(buffer + last + 1, (char*)inode->i_block);
ino = ext2_seek_name((ext2_VOLUME*)volume, buffer);
if (ino == 0) {
free(inode);
return NULL;
}
ret = ext2_get_inode((ext2_VOLUME*)volume, ino, inode);
if (ret == -1) {
free(inode);
return NULL;
}
}
file = (ext2_FILE*)malloc(sizeof(ext2_FILE));
if (file == NULL) {
free(inode);
return NULL;
}
file->volume = volume;
file->inode = inode;
file->offset = 0;
file->path = strdup(pathname);
return file;
}