There was a discussion about possibility of using superblock backup for creating images with e2image. https://www.spinics.net/lists/linux-ext4/msg30583.html Now our customer faced with situation then it would be useful to have image file from partition with broken superblock. Here is set of patches that adds this functionality. This is 5th version of the patch set. Changes since v4: * Actualized commit messages * removed "ext2fs" prefixes from ext2fs_first_backup_sb and ext2fs_try_backups names, because this fucntions are placed to lib/support now * parameters checked in case ext2fs_first_backup_sb is executed only with fs->super given * code style changes Artem Blagodarenko (4): ext2fs: opening filesystem code refactoring e2image: add -b and -B options to use supperblock backup tests: add test for e2image -b option ext2fs: automaticlly open backup superblocks e2fsck/e2fsck.h | 2 - e2fsck/message.c | 3 +- e2fsck/unix.c | 44 +++++--------- e2fsck/util.c | 73 ----------------------- lib/ext2fs/openfs.c | 36 +++++++++++- lib/support/Makefile.in | 8 ++- lib/support/sb_backup.c | 137 ++++++++++++++++++++++++++++++++++++++++++++ lib/support/sb_backup.h | 20 +++++++ misc/dumpe2fs.c | 17 +----- misc/e2image.8.in | 33 +++++++++++ misc/e2image.c | 50 ++++++++++++++-- tests/i_zero_super/expect.1 | 22 +++++++ tests/i_zero_super/image.gz | Bin 0 -> 13262 bytes tests/i_zero_super/script | 11 ++++ 14 files changed, 328 insertions(+), 128 deletions(-) create mode 100644 lib/support/sb_backup.c create mode 100644 lib/support/sb_backup.h create mode 100644 tests/i_zero_super/expect.1 create mode 100644 tests/i_zero_super/image.gz create mode 100644 tests/i_zero_super/script -- 2.14.3
