The shared library exports many functions that are not supposed to be
public, like rb-tree, crc32c or internal helpers but as this has been
potentially in use we should at least make a list. There's only a
subset being used by the snapper project.
Export majority of current symbols visible in libbtrfs so any future
additions to libbtrfs objects are automatically hidden and don't pollute
the namespace further.
Note that all projects should switch to libbtrfsutil rather than
libbtrfs that exists for historical reasons and will be deprecated in
the future.
Signed-off-by: David Sterba <dsterba@suse.com>
A user reports that some symbols are missing from libbtrfs, eg.
radix_tree_init. This is correct and there are few more. The headers
exported through the library all need the respective object files.
The sources are GPL so is libbtrfs, which is known
Issue: #205
Signed-off-by: David Sterba <dsterba@suse.com>
Build several standalone tools into one binary and switch the function
by name (symlink or hardlink).
* btrfs
* mkfs.btrfs
* btrfs-image
* btrfs-convert
* btrfstune
The static target is also supported. The name of resulting boxed
binaries is btrfs.box and btrfs.box.static . All the binaries can be
built at the same time without prior configuration.
text data bss dec hex filename
822454 27000 19724 869178 d433a btrfs
927314 28816 20812 976942 ee82e btrfs.box
2067745 58004 44736 2170485 211e75 btrfs.static
2627198 61724 83800 2772722 2a4ef2 btrfs.box.static
File sizes:
857496 btrfs
968536 btrfs.box
2141400 btrfs.static
2704472 btrfs.box.static
Standalone utilities:
512504 btrfs-convert
495960 btrfs-image
471224 btrfstune
491864 mkfs.btrfs
1747720 btrfs-convert.static
1411416 btrfs-image.static
1304256 btrfstune.static
1361696 mkfs.btrfs.static
So the shared 900K binary saves ~2M, or ~5.7M for static build.
Signed-off-by: David Sterba <dsterba@suse.cz>
Add structures and API for unified output definition and multiple
formatting backends. Currently there's plain text and json.
The format of each row is defined in struct rowspec, selected using a
key and formatted according to the type. There are extended types for
eg. UUID or pretty size, while direct printf format specifiers work too.
Due to different nature of the outputs, the context structure members
are not always used.
* text output mostly uses indentation and formats the name to a given
width
* json output tracks nesting depth and keeps stack of previous groups
(list or array) and how many member have been printed, as the
separators are allowed only between values and must not preced the
group closing bracket
the nesting depth is hardcoded to 16, counting the global group
The API provides functions to print simple values and some helpers to
format more complex structures.
Signed-off-by: David Sterba <dsterba@suse.com>
Create directory for all sources that can be used by anything that's not
rellated to a relevant kernel part, all common functions, helpers,
utilities that do not fit any other specific category.
The traditional location would be probably lib/ with all things that are
statically linked to the main binaries, but we have libbtrfs and
libbtrfsutil so this would be confusing.
Signed-off-by: David Sterba <dsterba@suse.com>
This is first instance of commands files moving to a separate directory,
that will be cmds/, thus the files can drop the prefix. We can further
split files into specific parts of a given command. The quota file was
selected as the smallest.
Signed-off-by: David Sterba <dsterba@suse.com>
Our build allows easy definition of CFLAGs that apply only to a given
file, like cmds_restore_cflags and cmds-restore.c .
This is done by series of transformations that convert the file name to
a variable name, when that is defined it's used.
To support files in directories outside of the top level we need to
convert the / too. The function 'subst' supports only a single string,
so they have to be nested.
Signed-off-by: David Sterba <dsterba@suse.com>
Gcc 9 adds the flag to default warnings and this produces a lot of
warnings that don't seem to be harmful as we know the address is
aligned, but this could be hidden in the function call chain.
It's still available under W=1.
Issue: #180
Signed-off-by: David Sterba <dsterba@suse.com>
libbtrfs.so already has user's LDFLAGS applied. The change also applies
those to libbtrfsutil.so. A separate variable is used for that though it
currently only copies LDFLAGS. This is to make it obvious that
libbtrfsutils is a standalone library.
Reported-by: Michał Górny
Bug: https://bugs.gentoo.org/686284
Pull-request: #172
Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
Signed-off-by: David Sterba <dsterba@suse.com>
Adds Make variables EXTRA_PYTHON_CFLAGS and EXTRA_PYTHON_LDFLAGS which
can be used to pass CFLAGS and LDFLAGS respectively when building the
Python library.
This is required to support reproducible builds, as there are often
compiler and linker flags that must be passed in order to generate
reproducible output (e.g. -fdebug-prefix-map)
Pull-request: #176
Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Provide an 'etags' make target to create tags in the Emacs etags
format, similar to the 'tags' target for VIM's ctags.
Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: David Sterba <dsterba@suse.com>
When using gcc8 + glibc 2.28.5 compiles utils.c, it complains as below:
utils.c:852:45: warning: '%s' directive output may be truncated writing
up to 4095 bytes into a region of size 4084 [-Wformat-truncation=]
snprintf(path, sizeof(path), "/dev/mapper/%s", name);
^~ ~~~~
In file included from /usr/include/stdio.h:873,
from utils.c:20:
/usr/include/bits/stdio2.h:67:10: note: '__builtin___snprintf_chk'
output between 13 and 4108 bytes into a destination of size 4096
return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
__bos (__s), __fmt, __va_arg_pack ());
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
This isn't a type of warning we care about, particularly when calling
snprintf() we expect string to be truncated.
Use the GCC option -Wno-format-truncation to disable this for default
build and W=1 build, while still keeping it for W=2 and W=3 builds.
Signed-off-by: Su Yanjun <suyj.fnst@cn.fujitsu.com>
[ Use cc-disable-warning to fix the not working CFLAGS setting in configure.ac ]
[ Keep the warning in W=2/W=3 build ]
Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Besides the comments, there's a slight change as the file config.log
will be deleted by the 'clean-gen' rule.
Generated by https://github.com/jsoref/spelling
Issue: #154
Author: Josh Soref <jsoref@users.noreply.github.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit pulls those portions of the kernel implementation of
delayed refs which are necessary to have them working in user-space.
I've done the following modifications:
1. Replaced all kmem_cache_alloc calls to kmalloc.
2. Removed all locking-related code, since we are single threaded in
userspace.
3. Removed code which deals with data refs - delayed refs in user space
are going to be used only for cowonly trees.
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
The build system mentioned in the previous commit builds libraries in
both PIC and non-PIC mode. Shared libraries don't work in PIC mode, so
it expects a --disable-shared configure option, which most open source
libraries using autoconf have. Let's add it, too.
Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
We have a build system internally which only needs to build and install
the libraries out of a repository, not any binaries. There's no easy way
to do this in btrfs-progs currently. Add --disable-programs to
./configure to support this.
Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
It does not 't build anymore and we don't have any use for it.
Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Add DEBUG_CFLAGS_INTERNAL to LIBBTRFSUTIL_CFLAGS for libbtrfsutil's
build.
Signed-off-by: Gu JinXiang <gujx@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>
GCC releases prior to 4.5.0 don't support -std=gnu90 so btrfs-progs won't
build at all on older distros. We can detect whether the compiler
supports -std=gnu90 and fall back to -std=gnu89 if it doesn't.
AX_CHECK_COMPILE_FLAG is the right way to do this, but it depends on
autoconf 2.64. AX_GCC_VERSION has been deprecated, so we'll use that
only for earlier autoconf versions so we can drop it when we drop
support for older autoconf releases.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Add libbtrfsutil objects to btrfs.static link command. This fixes static
build failure:
utils.static.o: In function `parse_qgroupid':
utils.c:(.text.parse_qgroupid+0xb0): undefined reference to `btrfs_util_is_subvolume'
props.static.o: In function `prop_read_only':
props.c:(.text.prop_read_only+0x70): undefined reference to `btrfs_util_set_subvolume_read_only'
...
Makefile:457: recipe for target 'btrfs.static' failed
make[1]: *** [btrfs.static] Error 1
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: David Sterba <dsterba@suse.com>
Its function has been superseded by btrfs inspect-internal tree-stats.
Just remove it.
Deprecated since 4.8.
Issue: #97
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Its function has been superseded by btrfs inspect-internal show-super.
Furthermore the tools is currently not built by default. Just remove it.
Deprecated since 4.8.
Issue: #97
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Its function has been subsumed by "btrfs rescue zero-log". Remove its
source file and adjust make/tests soruces accordingly.
Deprecated since 4.0.
Issue: #97
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
David Sterba