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This patch update vg_t handle to be consistent with lvm_t - define as a pointer
to internal struct volume_group.
Author: Dave Wysochanski <dwysocha@redhat.com>
For now, a simple way to enforce the read/write semantics is to just save the
open mode of the VG. If the caller uses lvm_vg_create, the mode is write.
The caller using lvm_vg_open can use either read or write to open the VG.
Once we have this, we enforce the permissions on each API call and don't allow
a caller to modify a VG that has not been opened properly.
This may be better combined with the locking mode, but I view that as future
cleanup, past this initial release. The intial release should enforce the
basic object semantics though, as described in the lvm.h file.
Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
These lower-priority interfaces are not currently implemented in liblvm
but are on the TODO list in the near term.
Author: Thomas Woerner <twoerner@redhat.com>
Acked-by: Dave Wysochanski <dwysocha@redhat.com>
Limited implementation but other types of activation should probably have
separate calls. We also currently do not handle pvmoves or lvconverts.
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>
Add a very simple version of lvm_vg_remove_lv.
Since we currently can only create linear LVs, this simple remove function
is adequate. We must refactor lvremove_single a bit.
Author: Dave Wysochanski <dwysocha@redhat.com>
Add the most straightforward 'get' functions required for anaconda.
These are the ones that return simple uint64_t values.
The other more complex ones involve the lv_attr bits. These will
come in a separate patch series since each lv_attr bit will be returned
in a separate API instred of returning the string and requiring the
user to parse it.
Author: Dave Wysochanski <dwysocha@redhat.com>
Caller must free the memory of the uuid / name returned.
This may not be the best memory management policy since it may lead to
memory leaks if the caller has code like this:
if (!lvm_vg_get_name(vg))
Maybe we don't care - if we do we can use pools tied to handles later
or some other scheme.
Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
Acked-by: Thomas Woerner <twoerner@redhat.com>
