mbox locking fixes / changes. we now read-lock the mbox file before syncing so we can be sure no-one corrupts our reads by expunging mailbox. mbox file is kept open all the time, but re-opened when device/inode for file has changed (ie. someone overwrote it). File is also kept mmap()ed until lock is dropped. we currently create .lock file even when reading the file (ie. being effectively write-lock), but that'll be made configurable later.

noinst_LIBRARIES = libstorage_index_mbox.a

INCLUDES = \
	-I$(top_srcdir)/src/lib \
	-I$(top_srcdir)/src/lib-mail \
	-I$(top_srcdir)/src/lib-imap \
	-I$(top_srcdir)/src/lib-index

libstorage_index_mbox_a_SOURCES = \
	mbox-append.c \
	mbox-from.c \
	mbox-index.c \
	mbox-lock.c \
	mbox-open.c \
	mbox-rebuild.c \
	mbox-rewrite.c \
	mbox-sync.c \
	mbox-sync-full.c

noinst_HEADERS = \
	mbox-index.h \
	mbox-lock.h