/*
* fileio.c --- Simple file I/O routines
- *
+ *
* Copyright (C) 1997 Theodore Ts'o.
*
* %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
+ * This file may be redistributed under the terms of the GNU Library
+ * General Public License, version 2.
* %End-Header%
*/
struct ext2_inode inode;
int flags;
__u64 pos;
- blk_t blockno;
- blk_t physblock;
+ blk64_t blockno;
+ blk64_t physblock;
char *buf;
};
retval = ext2fs_get_mem(sizeof(struct ext2_file), &file);
if (retval)
return retval;
-
+
memset(file, 0, sizeof(struct ext2_file));
file->magic = EXT2_ET_MAGIC_EXT2_FILE;
file->fs = fs;
if (retval)
goto fail;
}
-
+
retval = ext2fs_get_array(3, fs->blocksize, &file->buf);
if (retval)
goto fail;
*ret = file;
return 0;
-
+
fail:
if (file->buf)
ext2fs_free_mem(&file->buf);
{
errcode_t retval;
ext2_filsys fs;
-
+
EXT2_CHECK_MAGIC(file, EXT2_ET_MAGIC_EXT2_FILE);
fs = file->fs;
* Allocate it.
*/
if (!file->physblock) {
- retval = ext2fs_bmap(fs, file->ino, &file->inode,
+ retval = ext2fs_bmap2(fs, file->ino, &file->inode,
BMAP_BUFFER, file->ino ? BMAP_ALLOC : 0,
- file->blockno, &file->physblock);
+ file->blockno, 0, &file->physblock);
if (retval)
return retval;
}
errcode_t retval;
if (!(file->flags & EXT2_FILE_BUF_VALID)) {
- retval = ext2fs_bmap(fs, file->ino, &file->inode,
- BMAP_BUFFER, 0, file->blockno,
+ retval = ext2fs_bmap2(fs, file->ino, &file->inode,
+ BMAP_BUFFER, 0, file->blockno, 0,
&file->physblock);
if (retval)
return retval;
if (!dontfill) {
if (file->physblock) {
retval = io_channel_read_blk(fs->io,
- file->physblock,
+ file->physblock,
1, file->buf);
if (retval)
return retval;
}
return 0;
}
-
+
errcode_t ext2fs_file_close(ext2_file_t file)
{
errcode_t retval;
-
+
EXT2_CHECK_MAGIC(file, EXT2_ET_MAGIC_EXT2_FILE);
retval = ext2fs_file_flush(file);
-
+
if (file->buf)
ext2fs_free_mem(&file->buf);
ext2fs_free_mem(&file);
left = EXT2_I_SIZE(&file->inode) - file->pos ;
if (c > left)
c = left;
-
+
memcpy(ptr, file->buf+start, c);
file->pos += c;
ptr += c;
count += c;
wanted -= c;
}
-
+
fail:
if (got)
*got = count;
retval = sync_buffer_position(file);
if (retval)
goto fail;
-
+
start = file->pos % fs->blocksize;
c = fs->blocksize - start;
if (c > nbytes)
count += c;
nbytes -= c;
}
-
+
fail:
if (written)
*written = count;
{
__u64 loffset, ret_loffset;
errcode_t retval;
-
+
loffset = offset;
retval = ext2fs_file_llseek(file, loffset, whence, &ret_loffset);
if (ret_pos)
/*
* This function sets the size of the file, truncating it if necessary
- *
+ *
* XXX still need to call truncate
*/
errcode_t ext2fs_file_set_size(ext2_file_t file, ext2_off_t size)
{
errcode_t retval;
EXT2_CHECK_MAGIC(file, EXT2_ET_MAGIC_EXT2_FILE);
-
+
file->inode.i_size = size;
file->inode.i_size_high = 0;
if (file->ino) {
return retval;
}
- /*
+ /*
* XXX truncate inode if necessary
*/