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xipfs has a defragmentation ioctl and no way to reach it from a shell. The only caller was a demo in examples/nxflatxip, which built its own block map to show what compaction had done. xipfs [-n] [-t <ms>] [<mountpoint>] -n surveys and reports without moving anything: where each file sits, a map of the volume, and how much of the free space a single allocation can reach. That last number is the one a caller facing -ENOSPC actually wants; at 0% the largest possible file already fits however scattered the map looks. The compaction is asked for through a descriptor for the mountpoint directory, so no file inside the volume is open while it runs and a single pass can reach every extent. The walk descends into the directories xipfs synthesises from names, and reports each file by its path relative to the mount, so a volume that uses them is described in full rather than down to its first level. Block totals come from statfs rather than XIPFSIOC_EXTENTINFO, because that one does name a file and an empty volume has none, yet its geometry is still worth reporting. Assisted-by: Claude Code:claude-opus-4-8 Signed-off-by: Marco Casaroli <marco.casaroli@gmail.com>
35 lines
1.3 KiB
CMake
35 lines
1.3 KiB
CMake
# ##############################################################################
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# apps/system/xipfs/CMakeLists.txt
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#
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# SPDX-License-Identifier: Apache-2.0
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#
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# Licensed to the Apache Software Foundation (ASF) under one or more contributor
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# license agreements. See the NOTICE file distributed with this work for
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# additional information regarding copyright ownership. The ASF licenses this
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# file to you under the Apache License, Version 2.0 (the "License"); you may not
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# use this file except in compliance with the License. You may obtain a copy of
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# the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations under
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# the License.
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#
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# ##############################################################################
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if(CONFIG_SYSTEM_XIPFS)
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nuttx_add_application(
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MODULE
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${CONFIG_SYSTEM_XIPFS}
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NAME
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${CONFIG_SYSTEM_XIPFS_PROGNAME}
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STACKSIZE
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${CONFIG_SYSTEM_XIPFS_STACKSIZE}
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PRIORITY
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${CONFIG_SYSTEM_XIPFS_PRIORITY}
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SRCS
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xipfs_main.c)
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endif()
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