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26 lines
962 B
C
26 lines
962 B
C
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/*
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* unset_preload.so — Prevent LD_PRELOAD inheritance to child processes
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*
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* Problem: ES uses system()/popen() to run shell commands (battery %, distro
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* version, etc.). With LD_PRELOAD=gl4es, every subprocess loads gl4es which
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* prints init messages to stdout. ES captures these as command output, causing
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* "BAT: 87LIBGL: Initialising gl4es..." on screen.
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*
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* Solution: This tiny library's constructor runs during process init (after
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* the dynamic linker has already loaded all LD_PRELOAD libraries into memory).
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* It removes LD_PRELOAD from the environment so child processes don't inherit
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* it. gl4es remains loaded in the current process (already memory-mapped).
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*
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* Usage: LD_PRELOAD="/usr/lib/gl4es/libGL.so.1 /usr/lib/unset_preload.so" cmd
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*
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* Build: aarch64-linux-gnu-gcc -shared -o unset_preload.so unset_preload.c
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*/
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#include <stdlib.h>
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__attribute__((constructor))
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static void unset_preload(void)
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{
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unsetenv("LD_PRELOAD");
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}
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