----- Original Message ----- > On Tuesday, January 27, 2015 04:45:52 PM Nikos Mavrogiannopoulos wrote: > > Hello, > > The attached program as far as I understand creates a filter which > > allows select(). That works well on my x86-64: > > $ gcc test.c -lseccomp;./a.out > > all ok > > > > However, if I run the same thing under i686 emulation, I have: > > $ gcc -m32 test.c -lseccomp;./a.out > > select is blocked! > > Since you are running on an x86_64 system, you probably want to explicitly > add > support for the x86 ABI if you are interested in creating a filter that works > on both x86_64 and x86. This is probably not strictly necessary if you are > certain that you are linking to a properly build native x86 library, but I > can't be certain based on what you've posted.
Yes, I'm linking using the Fedora's i686 library. I should have mentioned that this is a reproducer for an issue reported to me: http://lists.infradead.org/pipermail/openconnect-devel/2015-January/002640.html I have no i686 available to me, that's why I reproduce that way. > > Note that allow others calls (e.g., write) are properly executed as > > expected. > Have you verified this via strace, or similar? I see the output on my screen so write worked :) Running it with strace shows the expected result. > Without digging to deeply, it > looks like you test select() before you test write(); if select() fails > you'll never know if write() worked correctly or not. Since I see output in my screen, I believe that write worked as expected. regards, Nikos ------------------------------------------------------------------------------ Dive into the World of Parallel Programming. The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ _______________________________________________ libseccomp-discuss mailing list libseccomp-discuss@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libseccomp-discuss
