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Allowing the caller to override the LVM configuration with an API will
enable them to use things such as device filters.
While very flexible, there is some danger to this API in that it will
make it harder to debug setups that have a changing config and deduce
what might have happened. At some point we may want to limit the scope
of this API but for now it is as open as the --config option to lvm commands.
Update exported symbols. When I renamed lvm_reload_config to lvm_config_reload
I forgot to rename so I renamed that one here.
This I believe is the last liblvm API for now. ;-)
Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
The general naming scheme for most liblvm APIs is:
lvm_<object>_<action>
As there are likely to be other things to do on the lvm 'config' object
(i.e. lvm_config_set_device_filter), we should use consistent naming.
Author: Dave Wysochanski <dwysocha@redhat.com>
For now, we use the following scheme.
For APIs that return an int, success is 0, fail is -1.
APIs that return handles, success is non-NULL, fail is NULL.
At this early stage, liblvm error handling mechanism is subject to change,
but for now we go with this simple scheme consistent with system
programming.
Author: Dave Wysochanski <dwysocha@redhat.com>
This needs initialized to non-NULL before using the archive() call.
Normally this is set to the cmdline string when lvm is called from a tool.
We could think about using it in another way, as a potential audit trail
of liblvm calls, or just leave it set to the default "liblvm", similar to
what clvmd does. For now, just set it to "liblvm".
Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
Acked-by: Alasdair G Kergon <agk@redhat.com>
We would like to declare our handles pv_t, vg_t, and lv_t in
the external library header lvm.h. However, these are already
defined in metadata-exported.h for the use of some of the
in-progress liblvm APIs. Thus, we cannot both define
them in lvm.h and include metadata-exported.h in the external
library C files. We could use preprocessor tricks (#ifndef)
but for now we just avoid the include.
The original liblvm.a has been moved to liblvm-internal.a.
We now use liblvm.a for the new application library and build
it inside liblvm directory.
Change dependencies so tools depend on liblvm application library,
and application library depends on liblvm internal.
