add and expose alpm_unlock

alpm_unlock is a limited version of alpm_release that does nothing but
the actual unlinking of the lock file and is therefore safe to call from
signal handlers.

Signed-off-by: Andrew Gregory <andrew.gregory.8@gmail.com>
Signed-off-by: Allan McRae <allan@archlinux.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/lib/libalpm/alpm.h b/lib/libalpm/alpm.h
index 3049f2fa..6cbcd24d 100644
--- a/lib/libalpm/alpm.h
+++ b/lib/libalpm/alpm.h
@@ -1559,6 +1559,7 @@ char *alpm_compute_sha256sum(const char *filename);
 alpm_handle_t *alpm_initialize(const char *root, const char *dbpath,
 		alpm_errno_t *err);
 int alpm_release(alpm_handle_t *handle);
+int alpm_unlock(alpm_handle_t *handle);
 
 enum alpm_caps {
 	ALPM_CAPABILITY_NLS = (1 << 0),