Expose v2.1.4

.gitignore

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+/target
+**/*.rs.bk
+Cargo.lock

.gitmodules

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+[submodule "littlefs"]
+	path = littlefs
+	url = https://github.com/ARMmbed/littlefs

Cargo.toml

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+[package]
+name = "littlefs2-sys"
+description = "Low-level bindings to LittleFS"
+version = "0.1.0"
+authors = ["Nicolas Stalder <n@stalder.io>"]
+edition = "2018"
+license = "BSD-3-Clause"
+readme = "README.md"
+categories = ["embedded", "filesystem", "no-std"]
+repository = "https://github.com/nickray/littlefs2-sys"
+
+[dependencies]
+cty = "0.2.1"
+
+[build-dependencies]
+bindgen = "0.52.0"
+cc = "1.0.25"

LICENSE-BSD3

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+Copyright (c) 2017, Arm Limited. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+-  Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+-  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.
+-  Neither the name of ARM nor the names of its contributors may be used to
+   endorse or promote products derived from this software without specific prior
+   written permission.
+
+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 HOLDER 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.

README.md

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+<h1 align="center">littlefs2-sys</h1>
+<div align="center">
+ <strong>
+   Low-level bindings to LittleFS
+ </strong>
+</div>
+
+<br />
+
+<div align="center">
+  <!-- Crates version -->
+  <a href="https://crates.io/crates/littlefs2-sys">
+    <img src="https://img.shields.io/crates/v/littlefs2-sys.svg?style=flat-square"
+    alt="Crates.io version" />
+  </a>
+  <!-- Downloads -->
+  <a href="https://crates.io/crates/littlefs2-sys">
+    <img src="https://img.shields.io/crates/d/littlefs2-sys.svg?style=flat-square"
+      alt="Download" />
+  </a>
+  <!-- API docs -->
+  <a href="https://docs.rs/littlefs2-sys">
+    <img src="https://img.shields.io/badge/docs-latest-blue.svg?style=flat-square"
+      alt="main branch API docs" />
+  </a>
+</div>
+
+## What is this?
+
+Low-level bindings to the [littlefs](littlefs) microcontroller filesystem.
+
+[littlefs]: https://github.com/ARMmbed/littlefs
+
+Currently, release v2.1.4 is exposed.
+
+#### License
+
+<sup>LittleFS licensed under [BSD-3-Clause](LICENSE-BSD3), as are these bindings.</sup>
+<br>
+<sub>The file `strings.c` is licensed under GPL-2.0</sub>

build.rs

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+use std::env;
+use std::path::PathBuf;
+
+fn main() {
+    cc::Build::new()
+        .flag("-std=c11")
+        .flag("-DLFS_NO_MALLOC")
+        .flag("-DLFS_NO_ASSERT")
+        .flag("-DLFS_NO_DEBUG")
+        .flag("-DLFS_NO_WARN")
+        .flag("-DLFS_NO_ERROR")
+        .file("littlefs/lfs.c")
+        .file("littlefs/lfs_util.c")
+        .file("string.c")
+        .compile("lfs-sys");
+
+    let bindings = bindgen::Builder::default()
+        .header("littlefs/lfs.h")
+        .use_core()
+        .ctypes_prefix("cty")
+        .generate()
+        .expect("Unable to generate bindings");
+
+    let out_path = PathBuf::from(env::var("OUT_DIR").unwrap());
+    bindings
+        .write_to_file(out_path.join("bindings.rs"))
+        .expect("Couldn't write bindings!");
+}

src/lib.rs

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+#![no_std]
+#![allow(non_upper_case_globals)]
+#![allow(non_camel_case_types)]
+
+include!(concat!(env!("OUT_DIR"), "/bindings.rs"));

string.c

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+// SPDX-License-Identifier: GPL-2.0
+/*
+ *  linux/lib/string.c
+ *
+ *  Copyright (C) 1991, 1992  Linus Torvalds
+ */
+
+#include <string.h>
+
+size_t strspn(const char *s, const char *accept)
+{
+	const char *p;
+	const char *a;
+	size_t count = 0;
+
+	for (p = s; *p != '\0'; ++p) {
+		for (a = accept; *a != '\0'; ++a) {
+			if (*p == *a)
+				break;
+		}
+		if (*a == '\0')
+			return count;
+		++count;
+	}
+	return count;
+}
+
+size_t strcspn(const char *s, const char *reject)
+{
+	const char *p;
+	const char *r;
+	size_t count = 0;
+
+	for (p = s; *p != '\0'; ++p) {
+		for (r = reject; *r != '\0'; ++r) {
+			if (*p == *r)
+				return count;
+		}
+		++count;
+	}
+	return count;
+}
+
+size_t strlen(const char *s)
+{
+	const char *sc;
+
+	for (sc = s; *sc != '\0'; ++sc)
+		/* nothing */;
+	return sc - s;
+}
+
+char *strchr(const char *s, int c)
+{
+	for (; *s != (char)c; ++s)
+		if (*s == '\0')
+			return NULL;
+	return (char *)s;
+}