Linux man pages : personality (2)
PERSONALITY(2) Linux Programmer's Manual PERSONALITY(2)
personality - set the process execution domain
int personality(unsigned long persona);
Linux supports different execution domains, or personalities, for each
process. Among other things, execution domains tell Linux how to map
signal numbers into signal actions. The execution domain system allows
Linux to provide limited support for binaries compiled under other
Unix-like operating systems.
personality will make the execution domain referenced by persona the
new execution domain of the current process.
On success, persona is made the new execution domain and the previous
persona is returned. On error, -1 is returned, and errno is set appro-
EINVAL persona does not refer to a valid execution domain.
personality is Linux-specific and should not be used in programs
intended to be portable.
Linux 2.0 1996-07-22 PERSONALITY(2)