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#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
int main(int argc, char* argv[]) {
if (argc < 3) {
printf("Usage: %s <ld_preload> <cmd> [cmd args]\n");
printf("\tset LD_PRELOAD to ld_preload and call execvp <cmd> [cmd args]\n");
return 1;
}
// Overwrite LD_PRELOAD.
setenv("LD_PRELOAD", argv[1], 1);
// Run cmd.
execvp(argv[2], &argv[2]);
}
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