312f05eaef
File system API functions that operate on paths are passed both the absolute path including the mount point prefix, and the mount point within which the path lies. Unfortunately it's not entirely trivial to convert an arbitrary path within the file system space to an absolute path within its mount point, because the path may be to the mount point itself and not end with a directory separator. The effect is that a file system implementation like nffs may be given an empty path when "/" is required. Add an implementation module that does this transformation and use it to transform paths within each filesystem wrapper. Signed-off-by: Peter A. Bigot <pab@pabigot.com>
23 lines
401 B
C
23 lines
401 B
C
/*
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* Copyright (c) 2019 Peter Bigot Consulting, LLC
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr.h>
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#include <fs/fs.h>
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#include "fs_impl.h"
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const char *fs_impl_strip_prefix(const char *path,
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const struct fs_mount_t *mp)
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{
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static const char *const root = "/";
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if ((path == NULL) || (mp == NULL)) {
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return path;
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}
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path += mp->mountp_len;
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return *path ? path : root;
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}
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