在RT-Thread Nano版本移植完littlefs后，文件IO函数如何实现？

ymm

系统版本：RT-Thread Nano
文件系统：littlefs
nor flash型号：W25Q256
nor 驱动方式：SPI
问题描述：现在已经实现移植littlefs需要的相关接口，编译后报错需要实现以下函数，但是littlefs的文件操作不是基于文件描述符进行的，有没有大佬知道怎么适配的



这是我的报错输出：

[C] 纯文本查看 复制代码

/usr/lib/gcc/arm-none-eabi/13.2.0/../../../../arm-none-eabi/bin/ld: /usr/lib/gcc/arm-none-eabi/13.2.0/../../../../arm-none-eabi/lib/thumb/v7e-m+fp/hard/libg.a(libc_a-closer.o): in function `_close_r':
/build/arm-none-eabi-newlib/src/build-newlib/arm-none-eabi/thumb/v7e-m+fp/hard/newlib/../../../../../../newlib-4.3.0.20230120/newlib/libc/reent/closer.c:47:(.text._close_r+0xc): undefined reference to `_close'
/usr/lib/gcc/arm-none-eabi/13.2.0/../../../../arm-none-eabi/bin/ld: /usr/lib/gcc/arm-none-eabi/13.2.0/../../../../arm-none-eabi/lib/thumb/v7e-m+fp/hard/libg.a(libc_a-lseekr.o): in function `_lseek_r':
/build/arm-none-eabi-newlib/src/build-newlib/arm-none-eabi/thumb/v7e-m+fp/hard/newlib/../../../../../../newlib-4.3.0.20230120/newlib/libc/reent/lseekr.c:49:(.text._lseek_r+0x14): undefined reference to `_lseek'
/usr/lib/gcc/arm-none-eabi/13.2.0/../../../../arm-none-eabi/bin/ld: /usr/lib/gcc/arm-none-eabi/13.2.0/../../../../arm-none-eabi/lib/thumb/v7e-m+fp/hard/libg.a(libc_a-readr.o): in function `_read_r':
/build/arm-none-eabi-newlib/src/build-newlib/arm-none-eabi/thumb/v7e-m+fp/hard/newlib/../../../../../../newlib-4.3.0.20230120/newlib/libc/reent/readr.c:49:(.text._read_r+0x14): undefined reference to `_read'
/usr/lib/gcc/arm-none-eabi/13.2.0/../../../../arm-none-eabi/bin/ld: /usr/lib/gcc/arm-none-eabi/13.2.0/../../../../arm-none-eabi/lib/thumb/v7e-m+fp/hard/libg.a(libc_a-writer.o): in function `_write_r':
/build/arm-none-eabi-newlib/src/build-newlib/arm-none-eabi/thumb/v7e-m+fp/hard/newlib/../../../../../../newlib-4.3.0.20230120/newlib/libc/reent/writer.c:49:(.text._write_r+0x14): undefined reference to `_write'
/usr/lib/gcc/arm-none-eabi/13.2.0/../../../../arm-none-eabi/bin/ld: /usr/lib/gcc/arm-none-eabi/13.2.0/../../../../arm-none-eabi/lib/thumb/v7e-m+fp/hard/libg.a(libc_a-fstatr.o): in function `_fstat_r':
/build/arm-none-eabi-newlib/src/build-newlib/arm-none-eabi/thumb/v7e-m+fp/hard/newlib/../../../../../../newlib-4.3.0.20230120/newlib/libc/reent/fstatr.c:55:(.text._fstat_r+0x12): undefined reference to `_fstat'
/usr/lib/gcc/arm-none-eabi/13.2.0/../../../../arm-none-eabi/bin/ld: /usr/lib/gcc/arm-none-eabi/13.2.0/../../../../arm-none-eabi/lib/thumb/v7e-m+fp/hard/libg.a(libc_a-isattyr.o): in function `_isatty_r':
/build/arm-none-eabi-newlib/src/build-newlib/arm-none-eabi/thumb/v7e-m+fp/hard/newlib/../../../../../../newlib-4.3.0.20230120/newlib/libc/reent/isattyr.c:52:(.text._isatty_r+0xc): undefined reference to `_isatty'
/usr/lib/gcc/arm-none-eabi/13.2.0/../../../../arm-none-eabi/bin/ld: /usr/lib/gcc/arm-none-eabi/13.2.0/../../../../arm-none-eabi/lib/thumb/v7e-m+fp/hard/libg.a(libc_a-signalr.o): in function `_kill_r':
/build/arm-none-eabi-newlib/src/build-newlib/arm-none-eabi/thumb/v7e-m+fp/hard/newlib/../../../../../../newlib-4.3.0.20230120/newlib/libc/reent/signalr.c:53:(.text._kill_r+0x12): undefined reference to `_kill'
/usr/lib/gcc/arm-none-eabi/13.2.0/../../../../arm-none-eabi/bin/ld: /usr/lib/gcc/arm-none-eabi/13.2.0/../../../../arm-none-eabi/lib/thumb/v7e-m+fp/hard/libg.a(libc_a-signalr.o): in function `_getpid_r':
/build/arm-none-eabi-newlib/src/build-newlib/arm-none-eabi/thumb/v7e-m+fp/hard/newlib/../../../../../../newlib-4.3.0.20230120/newlib/libc/reent/signalr.c:83:(.text._getpid_r+0x0): undefined reference to `_getpid'

eric2013

帮顶。