fs: Use init flags for fs_init / fs_shutdown

These will be called if any of the FS flags have been set, which retains
the previous behaviour. However, in the case where none of the VFS
drivers have been enabled, the fs_init / fs_shutdown now will be
garbage-collected.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>

Author: pcercuei

include/kos/init.h

@@ -54,6 +54,8 @@ __BEGIN_DECLS
     KOS_INIT_FLAG(flags, INIT_NET, net_shutdown); \
     KOS_INIT_FLAG(flags, INIT_NET, eth_init); \
     KOS_INIT_FLAG(flags, INIT_NET, eth_shutdown); \
+    KOS_INIT_FLAG(flags, INIT_FS_ALL, fs_init); \
+    KOS_INIT_FLAG(flags, INIT_FS_ALL, fs_shutdown); \
     KOS_INIT_FLAG(flags, INIT_FS_ROMDISK, fs_romdisk_init); \
     KOS_INIT_FLAG(flags, INIT_FS_ROMDISK, fs_romdisk_shutdown); \
     KOS_INIT_FLAG(flags, INIT_FS_NULL, fs_null_init); \

kernel/arch/dreamcast/kernel/init.c

@@ -132,8 +132,10 @@ KOS_INIT_FLAG_WEAK(dcload_init, true);
 KOS_INIT_FLAG_WEAK(fs_dcload_init_console, true);
 KOS_INIT_FLAG_WEAK(fs_dcload_shutdown, true);
 KOS_INIT_FLAG_WEAK(fs_dclsocket_shutdown, true);
+KOS_INIT_FLAG_WEAK(fs_init, true);
 KOS_INIT_FLAG_WEAK(fs_dev_init, true);
 KOS_INIT_FLAG_WEAK(fs_dev_shutdown, true);
+KOS_INIT_FLAG_WEAK(fs_shutdown, true);
 KOS_INIT_FLAG_WEAK(fs_null_init, true);
 KOS_INIT_FLAG_WEAK(fs_null_shutdown, true);
 KOS_INIT_FLAG_WEAK(fs_pty_init, true);
@@ -198,9 +200,7 @@ int  __weak_symbol arch_auto_init(void) {
 
     nmmgr_init();
 
-    if(__kos_init_flags & INIT_FS_ALL)
-        fs_init();                        /* VFS */
-
+    KOS_INIT_FLAG_CALL(fs_init);          /* VFS */
     KOS_INIT_FLAG_CALL(fs_dev_init);      /* /dev */
     KOS_INIT_FLAG_CALL(fs_null_init);     /* /dev/null */
     KOS_INIT_FLAG_CALL(fs_pty_init);      /* Pty */
@@ -267,8 +267,7 @@ void  __weak_symbol arch_auto_shutdown(void) {
 
     /* As a workaround, shut down the base FS before fs_pty
        to avoid triggering bugs. */
-    if(__kos_init_flags & INIT_FS_ALL)
-        fs_shutdown();
+    KOS_INIT_FLAG_CALL(fs_shutdown);
 
     KOS_INIT_FLAG_CALL(fs_pty_shutdown);