Create backup storage directories.

Any spool directories are actually created only if

 create-directories yes;

appears in the configuration file.  The global
directory-mode and directory-owner statements provide
global defaults for the directory metadata.

These two keywords can also appear within a spool.archive
block.

* src/backup.c (split_filename): Change to extern.
* src/config.c: Global directory-mode and directory-owner
statements.
New global statement create-directories.
spool.archive.directory-mode and directory-owner statements.
(cb_user,cb_supp_groups): Set wydawca_runas.
(create_spool_dir): Don't mkdir unless create-directories was
set. Honor wy_dry_run. Don't bail out on EPERM wheb uid is not 0.
(create_spool_dirs): Compute effective metadata. Create archive
directories.
* src/diskio.c (create_hierarchy): Fix stack overflow if baselen==0.
* src/wydawca.c (wydawca_runas): New global.
(main): Intitialize wydawca_uid and wydawca_gid to current values.
Run wydawca_userprivs only if wydawca_runas is set.
* src/wydawca.h (archive_descr) <metadata>: New member.
(wydawca_runas): New extern.
* tests/etc/wydawca.rcin: Add create-directories statement.
* tests/upload-dry.at: Fix expected output.

1 files changed, 2 insertions, 0 deletions

diff --git a/tests/etc/wydawca.rcin b/tests/etc/wydawca.rcin
index a655537..369ddc2 100644
--- a/tests/etc/wydawca.rcin
+++ b/tests/etc/wydawca.rcin
@@ -65,2 +65,4 @@ dictionary project-uploader {
 
+create-directories yes;
+
 spool test {