mirror of https://github.com/vivier/EMILE.git
71 lines
1.3 KiB
C
71 lines
1.3 KiB
C
/*
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*
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* (c) 2008 Laurent Vivier <Laurent@Vivier.EU>
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*
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*/
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <string.h>
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#include <stdio.h>
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#include "libext2.h"
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#include "ext2.h"
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#include "ext2_utils.h"
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stream_FILE* ext2_open(stream_VOLUME *volume, char* pathname)
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{
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ext2_FILE *file;
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struct ext2_inode *inode;
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int ino;
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int ret;
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ino = ext2_seek_name((ext2_VOLUME*)volume, pathname);
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if (ino == 0)
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return NULL;
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inode = (struct ext2_inode*)malloc(sizeof(struct ext2_inode));
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if (inode == NULL)
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return NULL;
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ret = ext2_get_inode((ext2_VOLUME*)volume, ino, inode);
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if (ret == -1) {
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free(inode);
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return NULL;
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}
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if (S_ISLNK(inode->i_mode)) {
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static char buffer[1024];
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int i, last = 0;
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strcpy(buffer, pathname);
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for (i = 0; buffer[i]; i++)
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if (buffer[i] == '/')
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last = i;
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buffer[last] = '/';
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strcpy(buffer + last + 1, (char*)inode->i_block);
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ino = ext2_seek_name((ext2_VOLUME*)volume, buffer);
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if (ino == 0) {
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free(inode);
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return NULL;
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}
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ret = ext2_get_inode((ext2_VOLUME*)volume, ino, inode);
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if (ret == -1) {
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free(inode);
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return NULL;
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}
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}
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file = (ext2_FILE*)malloc(sizeof(ext2_FILE));
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if (file == NULL) {
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free(inode);
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return NULL;
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}
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file->volume = (ext2_VOLUME*)volume;
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file->inode = inode;
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file->offset = 0;
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return (stream_FILE*)file;
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}
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