SELinux Prevents zpoline - `map failed` Error

[ossie-git]

In case anyone using an SELinux-enabled system runs into the following error:

$ LIBZPHOOK=./apps/basic/libzphook_basic.so LD_PRELOAD=./libzpoline.so /bin/ls
map failed
NOTE: /proc/sys/vm/mmap_min_addr should be set 0

the root cause is SELinux. By setting it to Permissive mode, you can get it to work:

sudo setenforce 0

You can turn it back to enforcement afterwards:

sudo setenforce 1

[yasukata]

I have added a note on this issue in README.

Thank you very much for your report which has improved the documentation.

[Jaslayer]

It might be more appropriate to use :

sudo setsebool -P mmap_low_allowed 1

[yasukata]

It is good to know that setsebool can selectively enable or disable access control settings.

Thank you very much for sharing the helpful information.