diff options
Diffstat (limited to 'cpukit/libfs/src/dosfs/msdos_init.c')
| -rw-r--r-- | cpukit/libfs/src/dosfs/msdos_init.c | 43 |
1 files changed, 39 insertions, 4 deletions
diff --git a/cpukit/libfs/src/dosfs/msdos_init.c b/cpukit/libfs/src/dosfs/msdos_init.c index 217e0c1f3a..8941ec45dc 100644 --- a/cpukit/libfs/src/dosfs/msdos_init.c +++ b/cpukit/libfs/src/dosfs/msdos_init.c @@ -4,6 +4,9 @@ * Copyright (C) 2001 OKTET Ltd., St.-Petersburg, Russia * Author: Eugeny S. Mints <Eugeny.Mints@oktet.ru> * + * Modifications to support reference counting in the file system are + * Copyright (c) 2012 embedded brains GmbH. + * * The license and distribution terms for this file may be * found in the file LICENSE in this distribution or at * http://www.rtems.com/license/LICENSE. @@ -19,27 +22,59 @@ #include "dosfs.h" #include "msdos.h" +static int msdos_clone_node_info(rtems_filesystem_location_info_t *loc) +{ + fat_file_fd_t *fat_fd = loc->node_access; + + return fat_file_reopen(fat_fd); +} + const rtems_filesystem_operations_table msdos_ops = { - .evalpath_h = msdos_eval_path, - .evalformake_h = msdos_eval4make, + .lock_h = msdos_lock, + .unlock_h = msdos_unlock, + .eval_path_h = msdos_eval_path, .link_h = rtems_filesystem_default_link, - .unlink_h = msdos_file_rmnod, + .are_nodes_equal_h = rtems_filesystem_default_are_nodes_equal, .node_type_h = msdos_node_type, .mknod_h = msdos_mknod, + .rmnod_h = msdos_rmnod, + .fchmod_h = rtems_filesystem_default_fchmod, .chown_h = rtems_filesystem_default_chown, + .clonenod_h = msdos_clone_node_info, .freenod_h = msdos_free_node_info, .mount_h = rtems_filesystem_default_mount, .fsmount_me_h = rtems_dosfs_initialize, .unmount_h = rtems_filesystem_default_unmount, .fsunmount_me_h = msdos_shut_down, .utime_h = rtems_filesystem_default_utime, - .eval_link_h = rtems_filesystem_default_evaluate_link, .symlink_h = rtems_filesystem_default_symlink, .readlink_h = rtems_filesystem_default_readlink, .rename_h = msdos_rename, .statvfs_h = rtems_filesystem_default_statvfs }; +void msdos_lock(rtems_filesystem_mount_table_entry_t *mt_entry) +{ + msdos_fs_info_t *fs_info = mt_entry->fs_info; + rtems_status_code sc = rtems_semaphore_obtain( + fs_info->vol_sema, + RTEMS_WAIT, + RTEMS_NO_TIMEOUT + ); + if (sc != RTEMS_SUCCESSFUL) { + rtems_fatal_error_occurred(0xdeadbeef); + } +} + +void msdos_unlock(rtems_filesystem_mount_table_entry_t *mt_entry) +{ + msdos_fs_info_t *fs_info = mt_entry->fs_info; + rtems_status_code sc = rtems_semaphore_release(fs_info->vol_sema); + if (sc != RTEMS_SUCCESSFUL) { + rtems_fatal_error_occurred(0xdeadbeef); + } +} + /* msdos_initialize -- * MSDOS filesystem initialization. Called when mounting an * MSDOS filesystem. |