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security_load_policy(3) — Linux manual page

security_load_policy(3) SELinux API documentationsecurity_load_policy(3)

NAME        top

       security_load_policy - load a new SELinux policy

SYNOPSIS        top

#include <selinux/selinux.h>int security_load_policy(const void *data, size_tlen);int selinux_mkload_policy(intpreservebools);int selinux_init_load_policy(int *enforce);

DESCRIPTION        top

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       function provides a higher level interface for loading policy thansecurity_load_policy(), internally determining the right policy       version, locating and opening the policy file, mapping it into       memory, manipulating it as needed for current boolean settings       and/or local definitions, and then calling security_load_policy to       load it.preservebools is a boolean flag indicating whether       current policy boolean values 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 theenforce 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 required 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 unmounted using a call tosecurity_disable(3).       Therefore, after the initial policy load, the only operational       changes are those permitted bysecurity_setenforce(3) (i.e.       eventually setting the framework in permissive mode rather than in       enforcing one).

RETURN VALUE        top

       Returns zero on success or -1 on error.

AUTHOR        top

       This manual page has been written by Guido Trentalancia       <guido@trentalancia.com>

SEE ALSO        top

selinux(8),security_disable(3),setenforce(8)

COLOPHON        top

       This page is part of theselinux (Security-Enhanced Linux user-       space libraries and tools) project.  Information about the project       can be found at ⟨https://github.com/SELinuxProject/selinux/wiki⟩.       If you have a bug report for this manual page, see       ⟨https://github.com/SELinuxProject/selinux/wiki/Contributing⟩.       This page was obtained from the project's upstream Git repository       ⟨https://github.com/SELinuxProject/selinux⟩ on 2025-08-11.  (At       that time, the date of the most recent commit that was found in       the repository was 2025-08-04.)  If you discover any rendering       problems in this HTML version of the page, or you believe there is       a better or more up-to-date source for the page, or you have       corrections or improvements to the information in this COLOPHON       (which isnot part of the original manual page), send a mail to       man-pages@man7.orgguido@trentalancia.com       3 November 2009security_load_policy(3)

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