Automatically backs up files that are deleted, modified, rename and moved by applications. This is done transparently by system call api redirection. A dynamic loaded shared library is automatically attached to the executed application and redirect openxxx, renamexxx, unlinkxxx calls and when required. The shared library is loaded via LD_PRELOAD mechanism Files are backed up under /tmp/back
TO BE DONE: -Testing, especially multiple processes access the same files. For the moment we use O_EXCL when, creating a to be backed up, file. I hope it should do the trick. This also has the advantage that original version of the file is backed up and not the successive potentials modifications -Exclude file list: files or directories that do not need to be backed up -Clean the code -Configuration: backup location,... -User defined heuristics for when and how to backup files
example: LD_PRELOAD=/tmp/autobackup.so yum erase strace
results in the following backup tree: /tmp/back/ /tmp/back/usr /tmp/back/usr/bin /tmp/back/usr/bin/strace /tmp/back/usr/bin/strace-log-merge /tmp/back/usr/share /tmp/back/usr/share/doc /tmp/back/usr/share/doc/strace /tmp/back/usr/share/doc/strace/COPYING /tmp/back/usr/share/doc/strace/CREDITS /tmp/back/usr/share/doc/strace/ChangeLog /tmp/back/usr/share/doc/strace/ChangeLog-CVS /tmp/back/usr/share/doc/strace/NEWS /tmp/back/usr/share/doc/strace/README /tmp/back/usr/share/man /tmp/back/usr/share/man/man1 /tmp/back/usr/share/man/man1/strace.1.gz /tmp/back/tmp /tmp/back/tmp/tmpxU8tCZ /tmp/back/tmp/yum_save_tx.2015-01-22.22-29.nBtkbN.yumtx /tmp/back/tmp/tmpzSpw5R /tmp/back/tmp/DzWKA8 /tmp/back/run /tmp/back/run/yum.pid /tmp/back/var /tmp/back/var/lib /tmp/back/var/lib/yum /tmp/back/var/lib/yum/yumdb /tmp/back/var/lib/yum/yumdb/s /tmp/back/var/lib/yum/yumdb/s/573e6386682aaf9dc0d05de4efa58ba23b8b08a6-strace-4.9-3.fc21-x86_64 /tmp/back/var/lib/yum/yumdb/s/573e6386682aaf9dc0d05de4efa58ba23b8b08a6-strace-4.9-3.fc21-x86_64/checksum_data /tmp/back/var/lib/yum/yumdb/s/573e6386682aaf9dc0d05de4efa58ba23b8b08a6-strace-4.9-3.fc21-x86_64/from_repo_revision /tmp/back/var/lib/yum/yumdb/s/573e6386682aaf9dc0d05de4efa58ba23b8b08a6-strace-4.9-3.fc21-x86_64/reason /tmp/back/var/lib/yum/yumdb/s/573e6386682aaf9dc0d05de4efa58ba23b8b08a6-strace-4.9-3.fc21-x86_64/from_repo_timestamp /tmp/back/var/lib/yum/yumdb/s/573e6386682aaf9dc0d05de4efa58ba23b8b08a6-strace-4.9-3.fc21-x86_64/from_repo /tmp/back/var/lib/yum/yumdb/s/573e6386682aaf9dc0d05de4efa58ba23b8b08a6-strace-4.9-3.fc21-x86_64/installed_by /tmp/back/var/lib/yum/yumdb/s/573e6386682aaf9dc0d05de4efa58ba23b8b08a6-strace-4.9-3.fc21-x86_64/command_line /tmp/back/var/lib/yum/yumdb/s/573e6386682aaf9dc0d05de4efa58ba23b8b08a6-strace-4.9-3.fc21-x86_64/origin_url /tmp/back/var/lib/yum/yumdb/s/573e6386682aaf9dc0d05de4efa58ba23b8b08a6-strace-4.9-3.fc21-x86_64/releasever /tmp/back/var/lib/yum/yumdb/s/573e6386682aaf9dc0d05de4efa58ba23b8b08a6-strace-4.9-3.fc21-x86_64/checksum_type /tmp/back/var/lib/yum/transaction-done.2015-01-22.22:29.17 /tmp/back/var/lib/yum/transaction-all.2015-01-22.22:29.17 /tmp/back/var/lib/yum/rpmdb-indexes /tmp/back/var/lib/yum/rpmdb-indexes/version /tmp/back/var/lib/yum/rpmdb-indexes/version.tmp /tmp/back/var/lib/yum/rpmdb-indexes/pkgtups-checksums /tmp/back/var/lib/yum/rpmdb-indexes/pkgtups-checksums.tmp /tmp/back/var/lib/yum/rpmdb-indexes/file-requires /tmp/back/var/lib/yum/rpmdb-indexes/file-requires.tmp /tmp/back/var/lib/yum/rpmdb-indexes/obsoletes /tmp/back/var/lib/yum/rpmdb-indexes/obsoletes.tmp /tmp/back/var/lib/rpm /tmp/back/var/lib/rpm/Sha1header /tmp/back/var/lib/rpm/Sigmd5 /tmp/back/var/lib/rpm/Installtid /tmp/back/var/lib/rpm/Dirnames /tmp/back/var/lib/rpm/Triggername /tmp/back/var/lib/rpm/Obsoletename /tmp/back/var/lib/rpm/Conflictname /tmp/back/var/lib/rpm/Providename /tmp/back/var/lib/rpm/Requirename /tmp/back/var/lib/rpm/Group /tmp/back/var/lib/rpm/Basenames /tmp/back/var/lib/rpm/Name /tmp/back/var/lib/rpm/Packages /tmp/back/var/lib/rpm/.rpm.lock /tmp/back/var/lib/rpm/__db.003 /tmp/back/var/lib/rpm/__db.002 /tmp/back/var/lib/rpm/__db.001 /tmp/back/var/lib/rpm/.dbenv.lock