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docs: update the file of defining FD_SETSIZE in vfs.rst
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@ -177,7 +177,7 @@ VFS does not impose any limit on total file path length, but it does limit the F
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File Descriptors
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----------------
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File descriptors are small positive integers from ``0`` to ``FD_SETSIZE - 1``, where ``FD_SETSIZE`` is defined in newlib's ``sys/types.h``. The largest file descriptors (configured by ``CONFIG_LWIP_MAX_SOCKETS``) are reserved for sockets. The VFS component contains a lookup-table called ``s_fd_table`` for mapping global file descriptors to VFS driver indexes registered in the ``s_vfs`` array.
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File descriptors are small positive integers from ``0`` to ``FD_SETSIZE - 1``, where ``FD_SETSIZE`` is defined in ``sys/select.h``. The largest file descriptors (configured by ``CONFIG_LWIP_MAX_SOCKETS``) are reserved for sockets. The VFS component contains a lookup-table called ``s_fd_table`` for mapping global file descriptors to VFS driver indexes registered in the ``s_vfs`` array.
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Standard IO Streams (stdin, stdout, stderr)
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@ -177,7 +177,7 @@ VFS 对文件路径长度没有限制,但文件系统路径前缀受 ``ESP_VFS
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文件描述符
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----------------
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文件描述符是一组很小的正整数,从 ``0`` 到 ``FD_SETSIZE - 1``,``FD_SETSIZE`` 在 newlib ``sys/types.h`` 中定义。最大文件描述符由 ``CONFIG_LWIP_MAX_SOCKETS`` 定义,且为套接字保留。VFS 中包含一个名为 ``s_fd_table`` 的查找表,用于将全局文件描述符映射至 ``s_vfs`` 数组中注册的 VFS 驱动索引。
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文件描述符是一组很小的正整数,从 ``0`` 到 ``FD_SETSIZE - 1``,``FD_SETSIZE`` 定义在 ``sys/select.h``。最大文件描述符由 ``CONFIG_LWIP_MAX_SOCKETS`` 定义,且为套接字保留。VFS 中包含一个名为 ``s_fd_table`` 的查找表,用于将全局文件描述符映射至 ``s_vfs`` 数组中注册的 VFS 驱动索引。
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标准 IO 流 (stdin, stdout, stderr)
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