英文:
How to debug a Dynamic Link Library (libfuse.so) using GDB?
问题
我是一个新手开发者在Linux/C中。最近，我正在使用WSL2 Ubuntu 20.04.6中的C语言使用libfuse开发文件系统，我需要调试libfuse的代码以查看确切的调用过程。但是当我尝试在GDB中加载.so文件时，它显示消息'You can't do that when your target is exec'。
以下是GDB消息。
(gdb) dir /lib/x86_64-linux-gnu
Source directories searched: /lib/x86_64-linux-gnu:$cdir:$cwd
(gdb) load libfuse.so.2
You can't do that when your target is `exec'
并且我在Makefile中使用了pkg-config fuse --cflags --libs来在编译过程中链接库。
我需要在调试模式下运行程序。但是我不知道如何进入libfuse的代码，但是GDB显示了以下信息。
(gdb) n
Single stepping until exit from function fuse_fs_write_buf,
which has no line number information.
0x00007ffff755558b in ?? () from /lib/x86_64-linux-gnu/libfuse.so.2
(gdb) n
Cannot find bounds of current function
我该怎么处理它？
英文:
I am a novice developer in Linux/C. Recently, I am developing a file system using libfuse in WSL2 Ubuntu 20.04.6 in C language, and I need to debug the code of libfuse to see the exact calling procedure. But when I try to load the .so file in GDB, it shows message 'You can't do that when your target is `exec''.
Here is the GDB message.
(gdb) dir /lib/x86_64-linux-gnu
Source directories searched: /lib/x86_64-linux-gnu:$cdir:$cwd
(gdb) load libfuse.so.2
You can't do that when your target is `exec'
And I used pkg-config fuse --cflags --libs in Makefile to link the library during compiling .
I need to run the program in the debug mode. And I don't know how to step into the code of libfuse, but the GDB shows the follow information.
(gdb) n
Single stepping until exit from function fuse_fs_write_buf,
which has no line number information.
0x00007ffff755558b in ?? () from /lib/x86_64-linux-gnu/libfuse.so.2
(gdb) n
Cannot find bounds of current function
How can I deal with it?
答案1
得分: 1
你需要安装libfuse的调试信息：sudo apt install libfuse-dev。
如果无法安装，可以从源代码构建，并包含调试信息。
英文:
You need install debug information for libfuse sudo apt install libfuse-dev.
If you can't install, then build it from sources with debug info.
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