{"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fnice20.hatenadiary.org%2Fentry%2F20080424%2Fp1\" title=\" dlsym\u3092LD_PRELOAD\u3067\u30d5\u30c3\u30af - LowPriority\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","url":"https://nice20.hatenadiary.org/entry/20080424/p1","blog_url":"https://nice20.hatenadiary.org/","height":"190","author_name":"nice20","author_url":"https://blog.hatena.ne.jp/nice20/","provider_url":"https://hatena.blog","width":"100%","description":"LD_PRELOAD\u3067\u95a2\u6570\u3092\u30d5\u30c3\u30af\u3057\u305f\u3044\u5834\u5408\u306e\u5e38\u5957\u624b\u6bb5\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u611f\u3058\u3060\u304c \u3053\u3053\u3067\u4f7f\u7528\u3059\u308bdlsym\u81ea\u4f53\u3092\u30d5\u30c3\u30af\u3059\u308b\u5fc5\u8981\u304c\u3042\u3063\u305f\u306e\u3067\u3069\u3046\u3059\u308c\u3070\u3044\u3044\u306e\u304b\u8003\u3048\u3066\u307f\u305f\u3002 void (*target_func)(void *p); void libinit() __attribute__((constructor)); void libinit(){ orig_func = dlsym(RTLD_NEXT, \"target_func\"); } void target_func(void *p){ ... orig_func(p); }\u305d\u306e\u307e\u307etarget_func=>dlsym\u306b\u3057\u3066\u547c\u3076\u3068\u3001\u30ed\u30fc\u30ab\u30eb\u2026","type":"rich","published":"2008-04-24 00:00:00","provider_name":"Hatena Blog","title":" dlsym\u3092LD_PRELOAD\u3067\u30d5\u30c3\u30af","blog_title":"LowPriority","version":"1.0","categories":["unix","tips"],"image_url":null}