Date:   Mon, 12 Dec 2022 13:40:50 -0700
From:   Andreas Dilger <adilger@...ger.ca>
To:     "Ritesh Harjani (IBM)" <ritesh.list@...il.com>
Cc:     Theodore Ts'o <tytso@....edu>, linux-ext4@...r.kernel.org,
        Harshad Shirwadkar <harshadshirwadkar@...il.com>,
        Li Xi <lixi@....com>, Wang Shilong <wangshilong1991@...il.com>
Subject: Re: [RFCv1 14/72] tst_bitmaps_standalone: Add copy and merge bitmaps
 test

On Nov 7, 2022, at 5:21 AM, Ritesh Harjani (IBM) <ritesh.list@...il.com> wrote:
> 
> This adds a basic copy and merge api test for rbtree bitmap type.
> 
> Signed-off-by: Ritesh Harjani (IBM) <ritesh.list@...il.com>

Thanks for adding this test.  It looks like it is only testing the default
rbtree bitmap type.  It would be good to also add a test for regular bitmaps.

Reviewed-by: Andreas Dilger <adilger@...ger.ca>

> ---
> lib/ext2fs/Makefile.in              |  25 +++-
> lib/ext2fs/tst_bitmaps_standalone.c | 170 ++++++++++++++++++++++++++++
> 2 files changed, 189 insertions(+), 6 deletions(-)
> create mode 100644 lib/ext2fs/tst_bitmaps_standalone.c
> 
> diff --git a/lib/ext2fs/Makefile.in b/lib/ext2fs/Makefile.in
> index f6a050a2..1692500e 100644
> --- a/lib/ext2fs/Makefile.in
> +++ b/lib/ext2fs/Makefile.in
> @@ -227,6 +227,7 @@ SRCS= ext2_err.c \
> 	$(srcdir)/write_bb_file.c \
> 	$(srcdir)/rbtree.c \
> 	$(srcdir)/tst_libext2fs.c \
> +	$(srcdir)/tst_bitmaps_standalone.c \
> 	$(DEBUG_SRCS)
> 
> HFILES= bitops.h ext2fs.h ext2_io.h ext2_fs.h ext2_ext_attr.h ext3_extents.h \
> @@ -328,9 +329,9 @@ tst_getsectsize: tst_getsectsize.o getsectsize.o $(STATIC_LIBEXT2FS) \
> 		$(ALL_LDFLAGS) $(STATIC_LIBEXT2FS) $(STATIC_LIBCOM_ERR) \
> 		$(SYSLIBS)
> 
> -tst_types.o: $(srcdir)/tst_types.c ext2_types.h
> +tst_types.o: $(srcdir)/tst_types.c ext2_types.h
> 
> -tst_types: tst_types.o ext2_types.h
> +tst_types: tst_types.o ext2_types.h
> 	$(E) "	LD $@"
> 	$(Q) $(CC) -o tst_types tst_types.o $(ALL_LDFLAGS) $(SYSLIBS)
> 
> @@ -362,6 +363,11 @@ tst_sha512: $(srcdir)/sha512.c $(srcdir)/ext2_fs.h
> 	$(Q) $(CC) $(ALL_LDFLAGS) $(ALL_CFLAGS) -o tst_sha512 \
> 		$(srcdir)/sha512.c -DUNITTEST $(SYSLIBS)
> 
> +tst_bitmaps_standalone: tst_bitmaps_standalone.o $(STATIC_LIBEXT2FS) $(DEPSTATIC_LIBCOM_ERR)
> +	$(E) "	LD $@"
> +	$(Q) $(CC) -o tst_bitmaps_standalone tst_bitmaps_standalone.o $(ALL_LDFLAGS) \
> +		$(STATIC_LIBEXT2FS) $(STATIC_LIBCOM_ERR) $(SYSLIBS)
> +
> ext2_tdbtool: tdbtool.o
> 	$(E) "	LD $@"
> 	$(Q) $(CC) -o ext2_tdbtool tdbtool.o tdb.o $(ALL_LDFLAGS) $(SYSLIBS)
> @@ -533,7 +539,7 @@ mkjournal: mkjournal.c $(STATIC_LIBEXT2FS) $(DEPLIBCOM_ERR)
> fullcheck check:: tst_bitops tst_badblocks tst_iscan tst_types tst_icount \
>     tst_super_size tst_types tst_inode_size tst_csum tst_crc32c tst_bitmaps \
>     tst_inline tst_inline_data tst_libext2fs tst_sha256 tst_sha512 \
> -    tst_digest_encode tst_getsize tst_getsectsize
> +    tst_digest_encode tst_getsize tst_getsectsize tst_bitmaps_standalone
> 	$(TESTENV) ./tst_bitops
> 	$(TESTENV) ./tst_badblocks
> 	$(TESTENV) ./tst_iscan
> @@ -556,6 +562,7 @@ fullcheck check:: tst_bitops tst_badblocks tst_iscan tst_types tst_icount \
> 	$(TESTENV) ./tst_bitmaps -l -f $(srcdir)/tst_bitmaps_cmds > tst_bitmaps_out
> 	diff $(srcdir)/tst_bitmaps_exp tst_bitmaps_out
> 	$(TESTENV) ./tst_digest_encode
> +	$(TESTENV) ./tst_bitmaps_standalone
> 
> installdirs::
> 	$(E) "	MKDIR_P $(libdir) $(includedir)/ext2fs"
> @@ -581,7 +588,7 @@ install:: all $(HFILES) $(HFILES_IN) installdirs ext2fs.pc
> uninstall::
> 	$(RM) -f $(DESTDIR)$(libdir)/libext2fs.a \
> 		$(DESTDIR)$(pkgconfigdir)/ext2fs.pc
> -	$(RM) -rf $(DESTDIR)$(includedir)/ext2fs
> +	$(RM) -rf $(DESTDIR)$(includedir)/ext2fs
> 
> clean::
> 	$(RM) -f \#* *.s *.o *.a *~ *.bak core profiled/* \
> @@ -590,7 +597,7 @@ clean::
> 		tst_bitops tst_types tst_icount tst_super_size tst_csum \
> 		tst_bitmaps tst_bitmaps_out tst_extents tst_inline \
> 		tst_inline_data tst_inode_size tst_bitmaps_cmd.c \
> -		tst_digest_encode tst_sha256 tst_sha512 \
> +		tst_digest_encode tst_sha256 tst_sha512  tst_bitmaps_standalone \
> 		ext2_tdbtool mkjournal debug_cmds.c tst_cmds.c extent_cmds.c \
> 		../libext2fs.a ../libext2fs_p.a ../libext2fs_chk.a \
> 		crc32c_table.h gen_crc32ctable tst_crc32c tst_libext2fs \
> @@ -646,7 +653,7 @@ windows_io.o: $(srcdir)/windows_io.c $(top_builddir)/lib/config.h \
>  $(srcdir)/ext2_ext_attr.h $(srcdir)/bitops.h $(srcdir)/ext2fsP.h
> 
> # +++ Dependency line eater +++
> -#
> +#
> # Makefile dependencies follow.  This must be the last section in
> # the Makefile.in file
> #
> @@ -1156,6 +1163,12 @@ tst_iscan.o: $(srcdir)/tst_iscan.c $(top_builddir)/lib/config.h \
>  $(srcdir)/ext2_fs.h $(srcdir)/ext3_extents.h $(top_srcdir)/lib/et/com_err.h \
>  $(srcdir)/ext2_io.h $(top_builddir)/lib/ext2fs/ext2_err.h \
>  $(srcdir)/ext2_ext_attr.h $(srcdir)/hashmap.h $(srcdir)/bitops.h
> +tst_bitmaps_standalone.o: $(srcdir)/tst_bitmaps_standalone.c $(top_builddir)/lib/config.h \
> + $(top_builddir)/lib/dirpaths.h $(srcdir)/ext2_fs.h \
> + $(top_builddir)/lib/ext2fs/ext2_types.h $(srcdir)/ext2fs.h \
> + $(srcdir)/ext2_fs.h $(srcdir)/ext3_extents.h $(top_srcdir)/lib/et/com_err.h \
> + $(srcdir)/ext2_io.h $(top_builddir)/lib/ext2fs/ext2_err.h \
> + $(srcdir)/ext2_ext_attr.h $(srcdir)/hashmap.h $(srcdir)/bitops.h
> undo_io.o: $(srcdir)/undo_io.c $(top_builddir)/lib/config.h \
>  $(top_builddir)/lib/dirpaths.h $(srcdir)/ext2_fs.h \
>  $(top_builddir)/lib/ext2fs/ext2_types.h $(srcdir)/ext2fs.h \
> diff --git a/lib/ext2fs/tst_bitmaps_standalone.c b/lib/ext2fs/tst_bitmaps_standalone.c
> new file mode 100644
> index 00000000..68b598a8
> --- /dev/null
> +++ b/lib/ext2fs/tst_bitmaps_standalone.c
> @@ -0,0 +1,170 @@
> +#include "config.h"
> +#include <stdio.h>
> +#include <string.h>
> +#include <assert.h>
> +#if HAVE_UNISTD_H
> +#include <unistd.h>
> +#endif
> +#include <fcntl.h>
> +#include <time.h>
> +#include <sys/stat.h>
> +#include <sys/types.h>
> +#if HAVE_ERRNO_H
> +#include <errno.h>
> +#endif
> +
> +#include "ext2_fs.h"
> +#include "ext2fs.h"
> +#include "bmap64.h"
> +
> +ext2_filsys test_fs;
> +ext2fs_block_bitmap block_map_1;
> +ext2fs_block_bitmap block_map_2;
> +ext2fs_block_bitmap block_map;
> +
> +static int test_fail = 0;
> +
> +void dump_bitmap(ext2fs_generic_bitmap bmap, unsigned int start, unsigned num)
> +{
> +	unsigned char	*buf;
> +	errcode_t	retval;
> +	int	i, len = (num - start + 7) / 8;
> +
> +	buf = malloc(len);
> +	if (!buf) {
> +		com_err("dump_bitmap", 0, "couldn't allocate buffer");
> +		return;
> +	}
> +	memset(buf, 0, len);
> +	retval = ext2fs_get_generic_bmap_range(bmap, (__u64) start, num, buf);
> +	if (retval) {
> +		com_err("dump_bitmap", retval,
> +			"while calling ext2fs_generic_bmap_range");
> +		free(buf);
> +		return;
> +	}
> +	for (i=len-1; i >= 0; i--)
> +		printf("%02x ", buf[i]);
> +	printf("\n");
> +	printf("bits set: %u\n", ext2fs_bitcount(buf, len));
> +	free(buf);
> +}
> +
> +static void test_copy_run()
> +{
> +	int blocks[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 21, 23, 26, 29, 33, 37, 38};
> +	errcode_t ret;
> +	char *buf_map = NULL;
> +	char *buf_copy_map = NULL;
> +
> +	assert(ext2fs_allocate_block_bitmap(test_fs, "block bitmap", &block_map_1) == 0);
> +
> +	for (int i = 0; i < sizeof(blocks)/sizeof(blocks[0]); i++) {
> +		ext2fs_mark_block_bitmap2(block_map_1, blocks[i]);
> +	}
> +
> +	assert(ext2fs_copy_bitmap(block_map_1, &block_map) == 0);
> +
> +	if (ext2fs_compare_block_bitmap(block_map_1, block_map) != 0) {
> +		printf("block bitmap copy test failed\n");
> +		test_fail++;
> +
> +		dump_bitmap(block_map_1, test_fs->super->s_first_data_block,
> +				test_fs->super->s_blocks_count);
> +
> +		dump_bitmap(block_map, test_fs->super->s_first_data_block,
> +				test_fs->super->s_blocks_count);
> +	}
> +
> +	ext2fs_free_block_bitmap(block_map_1);
> +	ext2fs_free_block_bitmap(block_map);
> +}
> +
> +void test_merge_run()
> +{
> +	int blocks_odd[] = {1, 3, 5, 7, 9, 21, 23, 29, 33, 37};
> +	int blocks_even[] = {2, 4, 6, 8, 10, 26, 38};
> +	ext2fs_generic_bitmap_64 tmp_map;
> +
> +	assert(ext2fs_allocate_block_bitmap(test_fs, "block bitmap 1", &block_map_1) == 0);
> +	assert(ext2fs_allocate_block_bitmap(test_fs, "block bitmap 2", &block_map_2) == 0);
> +	assert(ext2fs_allocate_block_bitmap(test_fs, "block bitmap 2", &block_map) == 0);
> +
> +	for (int i = 0; i < sizeof(blocks_odd) / sizeof(blocks_odd[0]); i++) {
> +		ext2fs_mark_block_bitmap2(block_map_1, blocks_odd[i]);
> +		ext2fs_mark_block_bitmap2(block_map, blocks_odd[i]);
> +	}
> +
> +	for (int i = 0; i < sizeof(blocks_even) / sizeof(blocks_even[0]); i++) {
> +		ext2fs_mark_block_bitmap2(block_map_2, blocks_even[i]);
> +		ext2fs_mark_block_bitmap2(block_map, blocks_even[i]);
> +	}
> +
> +	assert(ext2fs_merge_bitmap(block_map_2, block_map_1, NULL, NULL) == 0);
> +	if (ext2fs_compare_block_bitmap(block_map_1, block_map) != 0) {
> +		printf("block bitmap merge test failed\n");
> +		test_fail++;
> +
> +		dump_bitmap(block_map_1, test_fs->super->s_first_data_block,
> +				test_fs->super->s_blocks_count);
> +
> +		dump_bitmap(block_map, test_fs->super->s_first_data_block,
> +				test_fs->super->s_blocks_count);
> +	}
> +
> +	ext2fs_free_block_bitmap(block_map_1);
> +	ext2fs_free_block_bitmap(block_map_2);
> +	ext2fs_free_block_bitmap(block_map);
> +}
> +
> +static void setup_filesystem(const char *name, unsigned int blocks,
> +							 unsigned int inodes, unsigned int type,
> +							 unsigned int flags)
> +{
> +	struct ext2_super_block param;
> +	errcode_t ret;
> +
> +	memset(&param, 0, sizeof(param));
> +	ext2fs_blocks_count_set(&param, blocks);
> +	param.s_inodes_count = inodes;
> +
> +	ret = ext2fs_initialize(name, flags, &param, test_io_manager,
> +							&test_fs);
> +	if (ret) {
> +		com_err(name, ret, "while initializing filesystem");
> +		return;
> +	}
> +
> +	test_fs->default_bitmap_type = type;
> +
> +	ext2fs_free_block_bitmap(test_fs->block_map);
> +	ext2fs_free_block_bitmap(test_fs->inode_map);
> +
> +	return;
> +errout:
> +	ext2fs_close_free(&test_fs);
> +}
> +
> +int main(int argc, char **argv)
> +{
> +	unsigned int blocks = 127;
> +	unsigned int inodes = 0;
> +	unsigned int type = EXT2FS_BMAP64_RBTREE;
> +	unsigned int flags = EXT2_FLAG_64BITS;
> +	char *buf = NULL;
> +
> +	setup_filesystem(argv[0], blocks, inodes, type, flags);
> +
> +	/* test for EXT2FS_BMAP64_RBTREE */
> +	test_copy_run();
> +	test_merge_run();
> +
> +	/* TODO: test for EXT2FS_BMAP64_BITARRAY */
> +
> +	if (test_fail)
> +		printf("%s: Test copy & merge bitmaps -- NOT OK\n", argv[0]);
> +	else
> +		printf("%s: Test copy & merge bitmaps -- OK\n", argv[0]);
> +
> +	return test_fail;
> +}
> --
> 2.37.3
> 


Cheers, Andreas






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