[PATCH] storage: find vstorage-mount binary in runtime

[Nikolay Shirokovskiy <nshirokovskiy@xxxxxxxxxxxxx>]

This allows us to use CI for vstorage driver without installing Virtuozzo
Storage packages. This way we can leave aside license considerations.

By the way we need to change configure defaults from 'check' to 'no' otherwise
vstorage driver will be build on any system with umount binary which is not
expected I guess.

Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@xxxxxxxxxxxxx>
---
 m4/virt-storage-vstorage.m4            | 17 +----------------
 src/storage/storage_backend_vstorage.c |  9 ++++++++-
 2 files changed, 9 insertions(+), 17 deletions(-)

diff --git a/m4/virt-storage-vstorage.m4 b/m4/virt-storage-vstorage.m4
index e3b3bb4..cf0a543 100644
--- a/m4/virt-storage-vstorage.m4
+++ b/m4/virt-storage-vstorage.m4
@@ -21,30 +21,19 @@ dnl
 AC_DEFUN([LIBVIRT_STORAGE_ARG_VSTORAGE], [
   LIBVIRT_ARG_WITH_FEATURE([STORAGE_VSTORAGE],
                            [Virtuozzo Storage backend for the storage driver],
-                           [check])
+                           [no])
 ])
 
 AC_DEFUN([LIBVIRT_STORAGE_CHECK_VSTORAGE], [
   if test "$with_storage_vstorage" = "yes" ||
      test "$with_storage_vstorage" = "check"; then
-    AC_PATH_PROG([VSTORAGE], [vstorage], [], [$LIBVIRT_SBIN_PATH])
-    AC_PATH_PROG([VSTORAGE_MOUNT], [vstorage-mount], [], [$LIBVIRT_SBIN_PATH])
     AC_PATH_PROG([UMOUNT], [umount], [], [$LIBVIRT_SBIN_PATH])
 
     if test "$with_storage_vstorage" = "yes"; then
-      if test -z "$VSTORAGE" || test -z "$VSTORAGE_MOUNT"; then
-        AC_MSG_ERROR([We need vstorage and vstorage-mount tool for Vstorage storage driver]);
-      fi
       if test -z "$UMOUNT" ; then
         AC_MSG_ERROR([We need umount for Vstorage storage driver]);
       fi
     else
-      if test -z "$VSTORAGE" ; then
-        with_storage_vstorage=no
-      fi
-      if test -z "$VSTORAGE_MOUNT" ; then
-        with_storage_vstorage=no
-      fi
       if test -z "$UMOUNT" ; then
         with_storage_vstorage=no
       fi
@@ -57,10 +46,6 @@ AC_DEFUN([LIBVIRT_STORAGE_CHECK_VSTORAGE], [
     if test "$with_storage_vstorage" = "yes" ; then
       AC_DEFINE_UNQUOTED([WITH_STORAGE_VSTORAGE], 1,
                          [whether Vstorage backend for storage driver is enabled])
-      AC_DEFINE_UNQUOTED([VSTORAGE], ["$VSTORAGE"],
-                         [Location or name of the vstorage client tool])
-      AC_DEFINE_UNQUOTED([VSTORAGE_MOUNT], ["$VSTORAGE_MOUNT"],
-                         [Location or name of the vstorage mount tool])
       AC_DEFINE_UNQUOTED([UMOUNT], ["$UMOUNT"],
                          [Location or name of the umount programm])
     fi
diff --git a/src/storage/storage_backend_vstorage.c b/src/storage/storage_backend_vstorage.c
index 6cff9f1..ea3bfaa 100644
--- a/src/storage/storage_backend_vstorage.c
+++ b/src/storage/storage_backend_vstorage.c
@@ -44,9 +44,16 @@ virStorageBackendVzPoolStart(virStoragePoolObjPtr pool)
     g_autofree char *grp_name = NULL;
     g_autofree char *usr_name = NULL;
     g_autofree char *mode = NULL;
+    g_autofree char *mount_bin = NULL;
     g_autoptr(virCommand) cmd = NULL;
     int ret;
 
+    if (!(mount_bin = virFindFileInPath("vstorage-mount"))) {
+        virReportError(VIR_ERR_INTERNAL_ERROR,
+                       "%s", _("unable to find vstorage-mount"));
+        return -1;
+    }
+
     /* Check the permissions */
     if (def->target.perms.mode == (mode_t)-1)
         def->target.perms.mode = VIR_STORAGE_DEFAULT_POOL_PERM_MODE;
@@ -65,7 +72,7 @@ virStorageBackendVzPoolStart(virStoragePoolObjPtr pool)
 
     mode = g_strdup_printf("%o", def->target.perms.mode);
 
-    cmd = virCommandNewArgList(VSTORAGE_MOUNT,
+    cmd = virCommandNewArgList(mount_bin,
                                "-c", def->source.name,
                                def->target.path,
                                "-m", mode,
-- 
1.8.3.1