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The automatic initialization cannot be part of the main shared library, because there is no thread-safe way to change the environ global variable. This is not a problem if the initializaion happens just at program load time, but becomes one if the shared library is directly or indirectly dlopen()ed during the execution of the program, which could have either kept references to the old environ or could change it in some other thread. This has been observed for example on systems using Samba NSS modules. To avoid any other possible fallout, the constructor is split into a new static library that needs to be linked explicitly into programs using setproctitle(). As an additional safety measure the pkg-config linker flags will mark the program as not allowing to be dlopen()ed so that we avoid the problem described above. Reported-by: Jan Alexander Steffens (heftig) <jan.steffens@gmail.com> Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=66679
libbsd - Utility functions from BSD systems This library provides useful functions commonly found on BSD systems, and lacking on others like GNU systems, thus making it easier to port projects with strong BSD origins, without needing to embed the same code over and over again on each project. Releases -------- <http://libbsd.freedesktop.org/releases/> Mailing List ------------ The subscription interface and web archives can be found at: <http://lists.freedesktop.org/mailman/listinfo/libbsd> The mail address is: libbsd@lists.freedesktop.org Source Repository ----------------- <http://cgit.freedesktop.org/libbsd> <git://anongit.freedesktop.org/git/libbsd>