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Trying not call elfutils functions in ABRT under root
- From: Adam Sulc <xmineral at seznam dot cz>
- To: elfutils-devel at lists dot fedorahosted dot org
- Date: Wed, 30 Nov 2016 08:00:44 +0000
- Subject: Trying not call elfutils functions in ABRT under root
im using elfutils in ABRT program specifically when generating core_backtrace. According to this https://github.com/abrt/abrt/issues/890 post, it is not a good idea using elfutils under root. So I have tried moving as much elfutils function calls to non-root process as possible. That means the parent process is forked and in child process there are opened necessary files:
and then UID and GID of child is changed and then I can call elfutils in this function:
Is there any way how I can pass the opened files to elfutils functions? Especially for "/etc/[tid]/mem" which is needed in dwfl_linux_proc_find_elf that is part of Dwfl_Callbacks proc_cb ?
Current problem im solving is
int dwfl_linux_proc_find_elf function:
s hard-coded opening "/proc/%d/mem" file. Is there any way, how to open this file "/proc/%d/mem" under root and then pass the opened file to this function in order to avoid running "dwfl_linux_proc_find_elf" function under root?