Userspace utilities to manage btrfs filesystems
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Boris Burkov 980ba4e842 btrfs-progs: receive: add support for fs-verity
Process an enable_verity cmd by running the enable verity ioctl on the
file. Since enabling verity denies write access to the file, it is
important that we don't have any open write file descriptors.

This also revs the send stream format to version 3 with no format
changes besides the new commands and attributes. This version is not
finalized and commands may change, also this needs to be synchronized
with any kernel changes.

Note: the build is conditional on the header linux/fsverity.h

Signed-off-by: Boris Burkov <boris@bur.io>
Signed-off-by: David Sterba <dsterba@suse.com>
2022-10-11 09:08:08 +02:00
check btrfs-progs: kernel-lib: remove radix-tree 2022-10-11 09:08:07 +02:00
ci btrfs-progs: ci: fix image updater script 2022-10-11 09:06:13 +02:00
cmds btrfs-progs: receive: add support for fs-verity 2022-10-11 09:08:08 +02:00
common btrfs-progs: receive: add support for fs-verity 2022-10-11 09:08:08 +02:00
convert btrfs-progs: convert: use message helpers for error messages 2022-10-11 09:08:07 +02:00
crypto btrfs-progs: use error helper for messages in non-kernel code 2022-10-11 09:08:07 +02:00
Documentation btrfs-progs: docs: note about read-only mount for send 2022-10-11 09:08:07 +02:00
image btrfs-progs: factor string helpers out of utils.c 2022-10-11 09:06:13 +02:00
kernel-lib btrfs-progs: kernel-lib: remove radix-tree 2022-10-11 09:08:07 +02:00
kernel-shared btrfs-progs: receive: add support for fs-verity 2022-10-11 09:08:08 +02:00
libbtrfs btrfs-progs: kernel-lib: remove radix-tree 2022-10-11 09:08:07 +02:00
libbtrfsutil libbtrfsutil: update include lists 2022-10-11 09:08:07 +02:00
m4 btrfs-progs: build: add m4 macros for builtin detection 2022-08-16 15:18:12 +02:00
mkfs btrfs-progs: mkfs: use message helpers for error messages 2022-10-11 09:08:07 +02:00
tests btrfs-progs: tests: detect send stream version in misc/053 2022-10-11 09:06:13 +02:00
.editorconfig btrfs-progs: add basic .editorconfig 2020-08-31 17:01:02 +02:00
.gitignore btrfs-progs: remove asciidoc generated files from .gitignore 2022-03-09 15:37:25 +01:00
64-btrfs-dm.rules
64-btrfs-zoned.rules btrfs-progs: add udev rule to use mq-deadline on zoned btrfs 2022-02-01 18:41:43 +01:00
autogen.sh
btrfs-completion btrfs-progs: rescue: add create-control-device subcommand 2021-02-19 16:19:37 +01:00
btrfs-corrupt-block.c btrfs-progs: kernel-lib: remove radix-tree 2022-10-11 09:08:07 +02:00
btrfs-crc.c
btrfs-debugfs
btrfs-find-root.c btrfs-progs: map-logical: use message helpers for error messages 2022-10-11 09:08:07 +02:00
btrfs-fragments.c btrfs-progs: reorder includes in standalone tools 2022-10-11 09:06:12 +02:00
btrfs-map-logical.c btrfs-progs: kernel-lib: remove radix-tree 2022-10-11 09:08:07 +02:00
btrfs-sb-mod.c btrfs-progs: reorder includes in standalone tools 2022-10-11 09:06:12 +02:00
btrfs-select-super.c btrfs-progs: kernel-lib: remove radix-tree 2022-10-11 09:08:07 +02:00
btrfs.c btrfs-progs: common: update include lists, part 1 2022-10-11 09:08:07 +02:00
btrfstune.c btrfs-progs: hide block group tree behind experimental feature 2022-10-11 09:08:08 +02:00
CHANGES btrfs-progs: update CHANGES for 5.19.1 2022-09-12 19:00:01 +02:00
configure.ac btrfs-progs: receive: add support for fs-verity 2022-10-11 09:08:08 +02:00
COPYING
fsck.btrfs
INSTALL btrfs-progs: INSTALL: drop reference to libattr 2022-05-12 13:59:24 +02:00
ioctl.h btrfs-progs: send: stream v2 ioctl flags 2022-06-07 13:59:33 +02:00
kerncompat.h btrfs-progs: kerncompat: avoid redefined __bitwise__ warning 2022-08-16 15:18:12 +02:00
libbtrfs.sym btrfs-progs: delete commented exports from libbtrfs.sym 2022-05-12 20:04:39 +02:00
Makefile btrfs-progs: kernel-lib: remove radix-tree 2022-10-11 09:08:07 +02:00
Makefile.extrawarn
Makefile.inc.in btrfs-progs: build: rename compression support variables 2022-08-16 15:18:11 +02:00
quick-test.c btrfs-progs: kernel-lib: remove radix-tree 2022-10-11 09:08:07 +02:00
README.md btrfs-progs: README: update links to manual pages 2022-10-11 09:08:07 +02:00
show-blocks
VERSION Btrfs progs v5.19.1 2022-09-12 19:11:28 +02:00
version.h.in

Btrfs-progs coverity status

Userspace utilities to manage btrfs filesystems. License: GPLv2.

Btrfs is a copy on write (COW) filesystem for Linux aimed at implementing advanced features while focusing on fault tolerance, repair and easy administration.

This repository hosts following utilities and also documentation:

See INSTALL for build instructions and tests/README.md for testing information.

Release cycle

The major version releases are time-based and follow the cycle of the linux kernel releases. The cycle usually takes 2 months. A minor version releases may happen in the meantime if there are bug fixes or minor useful improvements queued.

The release tags are signed with a GPG key ID F2B4 1200 C54E FB30 380C 1756 C565 D5F9 D76D 583B, release tarballs are hosted at kernel.org. See file CHANGES or changelogs on wiki.

Reporting bugs

There are several ways, each has its own specifics and audience that can give feedback or work on a fix. The following list is sorted in the order of preference:

  • github issue tracker
  • to the mailing list linux-btrfs@vger.kernel.org -- (not required to subscribe), beware that the mail might get overlooked in other traffic
  • IRC (irc.libera.chat #btrfs) -- good for discussions eg. if a bug is already known, but reports could miss developers' attention
  • bugzilla.kernel.org -- (requires registration), set the product to Filesystems and component Btrfs, please put 'btrfs-progs' into the subject so it's clear that it's not a kernel bug report

Development

The patch submissions, development or general discussions take place at linux-btrfs@vger.kernel.org mailinglist, subsciption is not required to post.

The GitHub pull requests will not be accepted directly, the preferred way is to send patches to the mailinglist instead. You can link to a branch in any git repository if the mails do not make it to the mailinglist or just for convenience (makes it easier to test).

The development model of btrfs-progs shares a lot with the kernel model. The github way is different in some ways. We, the upstream community, expect that the patches meet some criteria (often lacking in github contributions):

  • one logical change per patch: eg. not mixing bugfixes, cleanups, features etc., sometimes it's not clear and will be usually pointed out during reviews
  • proper subject line: eg. prefix with btrfs-progs: subpart, ... , descriptive yet not too long, see git log --oneline for some inspiration
  • proper changelog: the changelogs are often missing or lacking explanation why the change was made, or how is something broken, what are user-visible effects of the bug or the fix, how does an improvement help or the intended usecase
  • the Signed-off-by line: this documents who authored the change, you can read more about the The Developer's Certificate of Origin (chapter 11)
    • if you are not used to the signed-off style, your contributions won't be rejected just because of it's missing, the Author: tag will be added as a substitute in order to allow contributions without much bothering with formalities

Source code coding style and preferences follow the kernel coding style. You can find the editor settings in .editorconfig and use the EditorConfig plugin to let your editor use that, or update your editor settings manually.

Testing

The testing documentation can be found in tests/ and continuous integration/container images in ci/.

Documentation updates

Documentation fixes or updates do not need much explanation so sticking to the code rules in the previous section is not necessary. GitHub pull requests are OK, patches could be sent to me directly and not required to be also in the mailinglist. Pointing out typos via IRC also works, although might get accidentally lost in the noise.

Documents are written in RST and built by sphinx.

Third-party sources

Build dependencies are listed in INSTALL. Implementation of checksum/hash functions is provided by copies of the respective sources to avoid adding dependencies that would make deployments in rescure or limited environments harder. The implementations are portable and not optimized for speed nor accelerated. Optionally it's possible to use libgcrypt, libsodium or libkcapi implementations.

Some other code is borrowed from kernel, eg. the raid5 tables or data structure implementation.

References