security_load_policy(3) SELinux API documentation security_load_policy(3)
NAME
security_load_policy - load a new SELinux policy
SYNOPSIS
#include <selinux/selinux.h>
int security_load_policy(void *data, size_t len);
int selinux_mkload_policy(int preservebools);
int selinux_init_load_policy(int *enforce);
DESCRIPTION
security_load_policy() loads a new policy, returns 0 for success and -1
for error.
selinux_mkload_policy() makes a policy image and loads it. This func-
tion provides a higher level interface for loading policy than
security_load_policy(), internally determining the right policy ver-
sion, locating and opening the policy file, mapping it into memory, ma-
nipulating it as needed for current boolean settings and/or local defi-
nitions, and then calling security_load_policy to load it. preserve-
bools is a boolean flag indicating whether current policy boolean val-
ues should be preserved into the new policy (if 1) or reset to the
saved policy settings (if 0). The former case is the default for policy
reloads, while the latter case is an option for policy reloads but is
primarily used for the initial policy load. selinux_init_load_policy()
performs the initial policy load. This function determines the desired
enforcing mode, sets the enforce argument accordingly for the caller to
use, sets the SELinux kernel enforcing status to match it, and loads
the policy. It also internally handles the initial selinuxfs mount re-
quired to perform these actions.
It should also be noted that after the initial policy load, the SELinux
kernel code cannot anymore be disabled and the selinuxfs cannot be un-
mounted using a call to security_disable(3). Therefore, after the ini-
tial policy load, the only operational changes are those permitted by
security_setenforce(3) (i.e. eventually setting the framework in per-
missive mode rather than in enforcing one).
RETURN VALUE
Returns zero on success or -1 on error.
AUTHOR
This manual page has been written by Guido Trentalancia <guido@trenta-
lancia.com>
SEE ALSO
selinux(8), security_disable(3), setenforce(8)
guido@trentalancia.com 3 November 2009 security_load_policy(3)
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