1997-04-29 20:17:09 +04:00
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/*
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* test_io.c --- This is the Test I/O interface.
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*
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* Copyright (C) 1996 Theodore Ts'o.
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*
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* %Begin-Header%
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* This file may be redistributed under the terms of the GNU Public
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* License.
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* %End-Header%
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*/
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#include <stdio.h>
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#include <string.h>
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1997-08-11 03:07:40 +04:00
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#if HAVE_UNISTD_H
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1997-04-29 20:17:09 +04:00
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#include <unistd.h>
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1997-08-11 03:07:40 +04:00
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#endif
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1997-04-29 20:17:09 +04:00
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#include <fcntl.h>
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#include <time.h>
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1997-10-20 03:00:21 +04:00
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#if HAVE_SYS_STAT_H
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1997-04-29 20:17:09 +04:00
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#include <sys/stat.h>
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1997-10-20 03:00:21 +04:00
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#endif
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#if HAVE_SYS_TYPES_H
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1997-04-29 20:17:09 +04:00
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#include <sys/types.h>
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1997-10-20 03:00:21 +04:00
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#endif
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1997-04-29 20:17:09 +04:00
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Many files:
inode.c (ext2fs_open_inode_scan): Initialize the group variables
so that we don't need to call get_next_blockgroup() the first
time around. Saves a bit of time, and prevents us from
needing to assign -1 to current_group (which is an unsigned
value).
icount.c (insert_icount_el): Cast the estimated number of inodes
from a float to an ino_t.
alloc.c, alloc_tables.c, badlbocks.c, bb_compat.c, bb_inode.c,
bitmaps.c, bitops.c, block.c, bmap.c, bmove.c, brel_ma.c,
check_desc.c, closefs.c, cmp_bitmaps.c, dblist.c,
dblist_dir.c, dir_iterate.c, dirblock.c, dupfs.c, expanddir.c,
ext2fs.h, fileio.c, freefs.c, get_pathname.c, getsize.c,
icount.c, initialize.c, inline.c, inode.c, irel_ma.c,
ismounted.c, link.c, lookup.c, mkdir.c, namei.c, native.c,
newdir.c, openfs.c, read_bb.c, read_bb_file.c, rs_bitmap.c,
rw_bitmaps.c, swapfs.c, test_io.c, tst_badblocks.c,
tst_getsize.c, tst_iscan.c, unix_io.c, unlink.c, valid_blk.c,
version.c: If EXT2_FLAT_INCLUDES is defined, then assume all
of the ext2-specific header files are in a flat directory.
block.c, bmove.c, dirblock.c, fileio.c: Explicitly cast
all assignments from void * to be compatible with C++.
closefs.c (ext2fs_flush): Add a call to io_channel_flush() to
make sure the contents of the disk are flushed to disk.
dblist.c (ext2fs_add_dir_block): Change new to be new_entry to
avoid C++ namespace clash.
bitmaps.c (ext2fs_copy_bitmap): Change new to be new_map to
avoid C++ namespace clash.
ext2fs.h, bb_inode.c, block.c, bmove.c, brel.h, brel_ma.c,
irel.h, irel_ma.c, dblist.c, dblist_dir.c, dir_iterate.c,
ext2fsP.h, expanddir.c, get_pathname.c, inode.c, link.c,
unlink.c: Change private to be priv_data (to avoid C++
namespace clash)
1998-01-19 17:47:53 +03:00
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#if EXT2_FLAT_INCLUDES
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#include "ext2_fs.h"
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#else
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1997-10-26 06:41:24 +03:00
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#include <linux/ext2_fs.h>
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Many files:
inode.c (ext2fs_open_inode_scan): Initialize the group variables
so that we don't need to call get_next_blockgroup() the first
time around. Saves a bit of time, and prevents us from
needing to assign -1 to current_group (which is an unsigned
value).
icount.c (insert_icount_el): Cast the estimated number of inodes
from a float to an ino_t.
alloc.c, alloc_tables.c, badlbocks.c, bb_compat.c, bb_inode.c,
bitmaps.c, bitops.c, block.c, bmap.c, bmove.c, brel_ma.c,
check_desc.c, closefs.c, cmp_bitmaps.c, dblist.c,
dblist_dir.c, dir_iterate.c, dirblock.c, dupfs.c, expanddir.c,
ext2fs.h, fileio.c, freefs.c, get_pathname.c, getsize.c,
icount.c, initialize.c, inline.c, inode.c, irel_ma.c,
ismounted.c, link.c, lookup.c, mkdir.c, namei.c, native.c,
newdir.c, openfs.c, read_bb.c, read_bb_file.c, rs_bitmap.c,
rw_bitmaps.c, swapfs.c, test_io.c, tst_badblocks.c,
tst_getsize.c, tst_iscan.c, unix_io.c, unlink.c, valid_blk.c,
version.c: If EXT2_FLAT_INCLUDES is defined, then assume all
of the ext2-specific header files are in a flat directory.
block.c, bmove.c, dirblock.c, fileio.c: Explicitly cast
all assignments from void * to be compatible with C++.
closefs.c (ext2fs_flush): Add a call to io_channel_flush() to
make sure the contents of the disk are flushed to disk.
dblist.c (ext2fs_add_dir_block): Change new to be new_entry to
avoid C++ namespace clash.
bitmaps.c (ext2fs_copy_bitmap): Change new to be new_map to
avoid C++ namespace clash.
ext2fs.h, bb_inode.c, block.c, bmove.c, brel.h, brel_ma.c,
irel.h, irel_ma.c, dblist.c, dblist_dir.c, dir_iterate.c,
ext2fsP.h, expanddir.c, get_pathname.c, inode.c, link.c,
unlink.c: Change private to be priv_data (to avoid C++
namespace clash)
1998-01-19 17:47:53 +03:00
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#endif
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1997-10-26 06:41:24 +03:00
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#include "ext2fs.h"
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1997-04-29 20:17:09 +04:00
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/*
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* For checking structure magic numbers...
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*/
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#define EXT2_CHECK_MAGIC(struct, code) \
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if ((struct)->magic != (code)) return (code)
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struct test_private_data {
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int magic;
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io_channel real;
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void (*read_blk)(unsigned long block, int count, errcode_t err);
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void (*write_blk)(unsigned long block, int count, errcode_t err);
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void (*set_blksize)(int blksize, errcode_t err);
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};
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static errcode_t test_open(const char *name, int flags, io_channel *channel);
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static errcode_t test_close(io_channel channel);
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static errcode_t test_set_blksize(io_channel channel, int blksize);
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static errcode_t test_read_blk(io_channel channel, unsigned long block,
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int count, void *data);
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static errcode_t test_write_blk(io_channel channel, unsigned long block,
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int count, const void *data);
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static errcode_t test_flush(io_channel channel);
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static struct struct_io_manager struct_test_manager = {
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EXT2_ET_MAGIC_IO_MANAGER,
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"Test I/O Manager",
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test_open,
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test_close,
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test_set_blksize,
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test_read_blk,
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test_write_blk,
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test_flush
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};
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io_manager test_io_manager = &struct_test_manager;
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/*
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* These global variable can be set by the test program as
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* necessary *before* calling test_open
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*/
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io_manager test_io_backing_manager = 0;
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void (*test_io_cb_read_blk)
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(unsigned long block, int count, errcode_t err) = 0;
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void (*test_io_cb_write_blk)
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(unsigned long block, int count, errcode_t err) = 0;
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void (*test_io_cb_set_blksize)
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(int blksize, errcode_t err) = 0;
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static errcode_t test_open(const char *name, int flags, io_channel *channel)
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{
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io_channel io = NULL;
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struct test_private_data *data = NULL;
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errcode_t retval;
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if (name == 0)
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return EXT2_ET_BAD_DEVICE_NAME;
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1997-10-26 06:41:24 +03:00
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retval = ext2fs_get_mem(sizeof(struct struct_io_channel),
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(void **) &io);
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if (retval)
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return retval;
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1997-04-29 20:17:09 +04:00
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memset(io, 0, sizeof(struct struct_io_channel));
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io->magic = EXT2_ET_MAGIC_IO_CHANNEL;
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1997-10-26 06:41:24 +03:00
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retval = ext2fs_get_mem(sizeof(struct test_private_data),
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(void **) &data);
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if (retval) {
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1997-10-31 09:07:47 +03:00
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retval = EXT2_ET_NO_MEMORY;
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1997-04-29 20:17:09 +04:00
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goto cleanup;
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}
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io->manager = test_io_manager;
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1997-10-26 06:41:24 +03:00
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retval = ext2fs_get_mem(strlen(name)+1, (void **) &io->name);
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if (retval)
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1997-04-29 20:17:09 +04:00
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goto cleanup;
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1997-10-26 06:41:24 +03:00
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1997-04-29 20:17:09 +04:00
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strcpy(io->name, name);
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io->private_data = data;
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io->block_size = 1024;
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io->read_error = 0;
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io->write_error = 0;
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1997-04-30 01:26:48 +04:00
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io->refcount = 1;
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1997-04-29 20:17:09 +04:00
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memset(data, 0, sizeof(struct test_private_data));
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data->magic = EXT2_ET_MAGIC_TEST_IO_CHANNEL;
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if (test_io_backing_manager) {
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retval = test_io_backing_manager->open(name, flags,
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&data->real);
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if (retval)
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goto cleanup;
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} else
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data->real = 0;
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data->read_blk = test_io_cb_read_blk;
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data->write_blk = test_io_cb_write_blk;
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data->set_blksize = test_io_cb_set_blksize;
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*channel = io;
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return 0;
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cleanup:
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if (io)
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1997-10-26 06:41:24 +03:00
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ext2fs_free_mem((void **) &io);
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1997-04-29 20:17:09 +04:00
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if (data)
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1997-10-26 06:41:24 +03:00
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ext2fs_free_mem((void **) &data);
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1997-04-29 20:17:09 +04:00
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return retval;
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}
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static errcode_t test_close(io_channel channel)
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{
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struct test_private_data *data;
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errcode_t retval = 0;
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EXT2_CHECK_MAGIC(channel, EXT2_ET_MAGIC_IO_CHANNEL);
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data = (struct test_private_data *) channel->private_data;
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EXT2_CHECK_MAGIC(data, EXT2_ET_MAGIC_TEST_IO_CHANNEL);
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1997-04-30 01:26:48 +04:00
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if (--channel->refcount > 0)
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return 0;
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1997-04-29 20:17:09 +04:00
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if (data->real)
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retval = io_channel_close(data->real);
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if (channel->private_data)
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1997-10-26 06:41:24 +03:00
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ext2fs_free_mem((void **) &channel->private_data);
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1997-04-29 20:17:09 +04:00
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if (channel->name)
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1997-10-26 06:41:24 +03:00
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ext2fs_free_mem((void **) &channel->name);
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ext2fs_free_mem((void **) &channel);
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1997-04-29 20:17:09 +04:00
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return retval;
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}
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static errcode_t test_set_blksize(io_channel channel, int blksize)
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{
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struct test_private_data *data;
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errcode_t retval = 0;
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EXT2_CHECK_MAGIC(channel, EXT2_ET_MAGIC_IO_CHANNEL);
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data = (struct test_private_data *) channel->private_data;
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EXT2_CHECK_MAGIC(data, EXT2_ET_MAGIC_TEST_IO_CHANNEL);
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if (data->real)
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retval = io_channel_set_blksize(data->real, blksize);
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if (data->set_blksize)
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data->set_blksize(blksize, retval);
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else
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printf("Test_io: set_blksize(%d) returned %s\n",
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blksize, retval ? error_message(retval) : "OK");
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return retval;
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}
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static errcode_t test_read_blk(io_channel channel, unsigned long block,
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int count, void *buf)
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{
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struct test_private_data *data;
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errcode_t retval = 0;
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EXT2_CHECK_MAGIC(channel, EXT2_ET_MAGIC_IO_CHANNEL);
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data = (struct test_private_data *) channel->private_data;
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EXT2_CHECK_MAGIC(data, EXT2_ET_MAGIC_TEST_IO_CHANNEL);
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if (data->real)
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retval = io_channel_read_blk(data->real, block, count, buf);
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if (data->read_blk)
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data->read_blk(block, count, retval);
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else
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printf("Test_io: read_blk(%lu, %d) returned %s\n",
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block, count, retval ? error_message(retval) : "OK");
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return retval;
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}
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static errcode_t test_write_blk(io_channel channel, unsigned long block,
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int count, const void *buf)
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{
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struct test_private_data *data;
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errcode_t retval = 0;
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EXT2_CHECK_MAGIC(channel, EXT2_ET_MAGIC_IO_CHANNEL);
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data = (struct test_private_data *) channel->private_data;
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EXT2_CHECK_MAGIC(data, EXT2_ET_MAGIC_TEST_IO_CHANNEL);
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if (data->real)
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retval = io_channel_write_blk(data->real, block, count, buf);
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if (data->write_blk)
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data->write_blk(block, count, retval);
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else
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printf("Test_io: write_blk(%lu, %d) returned %s\n",
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block, count, retval ? error_message(retval) : "OK");
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return retval;
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}
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/*
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* Flush data buffers to disk.
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*/
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static errcode_t test_flush(io_channel channel)
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{
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struct test_private_data *data;
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1998-02-17 01:00:37 +03:00
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errcode_t retval = 0;
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1997-04-29 20:17:09 +04:00
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EXT2_CHECK_MAGIC(channel, EXT2_ET_MAGIC_IO_CHANNEL);
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data = (struct test_private_data *) channel->private_data;
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EXT2_CHECK_MAGIC(data, EXT2_ET_MAGIC_TEST_IO_CHANNEL);
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if (data->real)
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1998-02-17 01:00:37 +03:00
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retval = io_channel_flush(data->real);
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printf("Test_io: flush() returned %s\n",
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retval ? error_message(retval) : "OK");
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return retval;
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1997-04-29 20:17:09 +04:00
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}
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