The string escaping functionality is more generic and can be used in
other commands (e.g. in dump-tree). Move it to the string utils.
Signed-off-by: David Sterba <dsterba@suse.com>
The separator of key=value is only one or more space character, the
'encoded_write' also uses ',' which is inconsistent with the rest.
Signed-off-by: David Sterba <dsterba@suse.com>
The xattr names are user strings but still can potentially contain
special characters (as reported). There doesn't seem to be a restriction
on the name defined.
The xattr values care length-encoded byte arrays so escaping needs be
done.
The clone source is a path and by mistake lacked the encoding.
Issue: #818
Signed-off-by: David Sterba <dsterba@suse.com>
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>
The preferred order:
- system headers
- standard headers
- libraries
- kernel library
- kernel shared
- common headers
- other tools
- own headers
Signed-off-by: David Sterba <dsterba@suse.com>
The stream dump escapes the path on which the operation is done but
there are a some that use another path that's the target. A file with
eg. a newline then does not format properly on one line as expected.
Extend the printing helpers to skip printing the newline and then print
the escaped path manually.
Issue: #510
Signed-off-by: David Sterba <dsterba@suse.com>
The initial proposal for file attributes was built on simply doing
SETFLAGS but this builds on an old and non-extensible interface that has
no direct mapping for all inode flags. There's a unified interface
fileattr that covers file attributes and xflags, it should be possible
to add new bits.
On the protocol level the value is copied as-is in the original inode
but this does not provide enough information how to apply the bits on
the receiving side. Eg. IMMUTABLE flag prevents any changes to the file
and has to be handled manually.
The receiving side does not apply the bits yet, only parses it from the
stream.
Signed-off-by: David Sterba <dsterba@suse.com>
In send stream v2, send can emit a command for setting inode flags via
the setflags ioctl. Pass the flags attribute through to the ioctl call
in receive.
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Boris Burkov <boris@bur.io>
Signed-off-by: David Sterba <dsterba@suse.com>
Send stream v2 can emit fallocate commands, so receive must support them
as well. The implementation simply passes along the arguments to the
syscall. Note that mode is encoded as a u32 in send stream but fallocate
takes an int, so there is a unsigned->signed conversion there.
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Boris Burkov <boris@bur.io>
Signed-off-by: David Sterba <dsterba@suse.com>
Add a new btrfs_send_op and support for both dumping and proper receive
processing which does actual encoded writes.
Encoded writes are only allowed on a file descriptor opened with an
extra flag that allows encoded writes, so we also add support for this
flag when opening or reusing a file for writing.
Signed-off-by: Boris Burkov <boris@bur.io>
Signed-off-by: David Sterba <dsterba@suse.com>
The kernel uses 'unsigned long' for u64 specifically for ppc64 and
mips64.
Remove asm/types.h include as it will get included properly later.
Fixe -Wformat warnings.
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Add the GPL v2 header to files where it was missing and is not from an
external source, update to the most recent version with the address.
Signed-off-by: David Sterba <dsterba@suse.com>
David Sterba
Boris Burkov
Boris Burkov
Rosen Penev