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Otherwise the string gets included in the QEMU binary, not the library.
Suggested-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
Signed-off-by: Stefan Reiter <s.reiter@proxmox.com>
...so we can get the library version a binary is currently running with.
Version information is retrieved from the build environment (set by
cargo/make) and appended using 'with_after_include' to appear within the
include guard.
The version string in current-api.h is inconsequential, so ignore it in
diff. This way we only have to re-commit that file whenever the *actual*
API changes, not the version.
Signed-off-by: Stefan Reiter <s.reiter@proxmox.com>
modified to avoid spawning subcommands
Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
For dirty-bitmap migration, QEMU also needs to move the static state of
the library to the target. proxmox_{import,export}_state provide a means
of accessing said data in a serialized fashion.
QEMU treats the state as some unknown quantity of bytes and the result
does not need to be human-readable, so we encode it with 'bincode',
which is based on serde.
Since the quantity is only known *after* serialization, we have to
allocate the buffer ourselves. This is handled by Box::leak-ing a Rust
allocated buffer and cleaning up via the explicit
proxmox_free_state_buf function.
Signed-off-by: Stefan Reiter <s.reiter@proxmox.com>
QEMU will always assume EOF when less bytes than requested are returned
by a block drivers 'read' interface, so we need to fill the buffer up to
'size' if possible.
Signed-off-by: Stefan Reiter <s.reiter@proxmox.com>
commit the current generated proxmox-backup-qemu.h as
'current-api.h' and run `diff -up` between the two in build
steps, so any changes to the C api are caught at build time.
cbindgen seems to be using a BTreeMap for the data, so it
should always come out sorted, so this should be a
stable-enough check.
Link: https://github.com/eqrion/cbindgen/issues/12
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
