diff options
Diffstat (limited to 'cpukit/libfs/src/imfs/imfs_add_node.c')
-rw-r--r-- | cpukit/libfs/src/imfs/imfs_add_node.c | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/cpukit/libfs/src/imfs/imfs_add_node.c b/cpukit/libfs/src/imfs/imfs_add_node.c new file mode 100644 index 0000000000..ad26c5b26c --- /dev/null +++ b/cpukit/libfs/src/imfs/imfs_add_node.c @@ -0,0 +1,112 @@ +/* SPDX-License-Identifier: BSD-2-Clause */ + +/** + * @file + * + * @ingroup IMFS + * + * @brief IMFS Add a Node + */ + +/* + * Copyright (C) 2020 embedded brains GmbH (http://www.embedded-brains.de) + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#if HAVE_CONFIG_H +#include "config.h" +#endif + +#include <rtems/imfs.h> + +int IMFS_add_node( const char *path, IMFS_jnode_t *node, void *arg ) +{ + mode_t mode; + rtems_filesystem_eval_path_context_t ctx; + const rtems_filesystem_location_info_t *currentloc; + int eval_flags; + int rv; + + mode = node->st_mode; + mode &= ~rtems_filesystem_umask; + + switch (mode & S_IFMT) { + case S_IFBLK: + case S_IFCHR: + case S_IFIFO: + case S_IFREG: + case S_IFSOCK: + break; + default: + errno = EINVAL; + return -1; + } + + eval_flags = RTEMS_FS_FOLLOW_LINK; + currentloc = rtems_filesystem_eval_path_start( &ctx, path, eval_flags ); + + if ( IMFS_is_imfs_instance( currentloc ) ) { + eval_flags = RTEMS_FS_MAKE | RTEMS_FS_EXCLUSIVE; + rtems_filesystem_eval_path_set_flags( &ctx, eval_flags ); + rtems_filesystem_eval_path_set_path( &ctx, node->name, node->namelen ); + rtems_filesystem_eval_path_continue( &ctx ); + + if ( rtems_filesystem_eval_path_get_token( &ctx ) == node->name ) { + IMFS_assert( + rtems_filesystem_eval_path_get_tokenlen( &ctx ) == node->namelen + ); + node = IMFS_initialize_node( + node, + node->control, + node->name, + node->namelen, + mode, + arg + ); + if ( node != NULL ) { + IMFS_jnode_t *parent; + + currentloc = rtems_filesystem_eval_path_get_currentloc( &ctx ); + parent = currentloc->node_access; + IMFS_assert( parent != NULL ); + IMFS_add_to_directory( parent, node ); + IMFS_mtime_ctime_update( parent ); + rv = 0; + } else { + rv = -1; + } + } else { + if ( rtems_filesystem_eval_path_get_token( &ctx ) != NULL ) { + rtems_filesystem_eval_path_error( &ctx, EINVAL ); + } + + rv = -1; + } + } else { + rtems_filesystem_eval_path_error( &ctx, ENOTSUP ); + rv = -1; + } + + rtems_filesystem_eval_path_cleanup( &ctx ); + return rv; +} |