On Tue, 11 Nov 2014, H.J. Lu wrote: > Currently mpx-runtime uses > > dlsym(RTLD_NEXT, "sigaction"); > > to get the original sigaction in liibc.so. Glibc does provides __sigaction > for the original sigaction. But dlsym(RTLD_NEXT, is more portable.
I guess there's a question of what the portability targets for this code are. E.g. setting O_CLOEXEC when opening files (not later with fcntl FD_CLOEXEC if there might be other threads running at the time) is good practice for writing libraries - but while O_CLOEXEC is in current POSIX, setting it from fopen with the "e" flag is a GNU extension. -- Joseph S. Myers jos...@codesourcery.com
