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NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | COLOPHON |
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security_getenforce(3) SELinux API documentation security_getenforce(3)
security_getenforce, security_setenforce, security_deny_unknown,
security_reject_unknown, security_get_checkreqprot - get or set
the enforcing state of SELinux
#include <selinux/selinux.h>
int security_getenforce(void);
int security_setenforce(int value);
int security_deny_unknown(void);
int security_reject_unknown(void);
int security_get_checkreqprot(void);
security_getenforce() returns 0 if SELinux is running in
permissive mode, 1 if it is running in enforcing mode, and -1 on
error.
security_setenforce() sets SELinux to enforcing mode if the value
1 is passed in, and sets it to permissive mode if 0 is passed in.
On success 0 is returned, on error -1 is returned.
security_deny_unknown() returns 0 if SELinux treats policy queries
on undefined object classes or permissions as being allowed, 1 if
such queries are denied, and -1 on error.
security_reject_unknown() returns 1 if the current policy was
built with handle-unknown=reject and SELinux would reject loading
it, if it did not define all kernel object classes and
permissions. In this state, when selinux_set_mapping() and
selinux_check_access() are used with an undefined userspace class
or permission, an error is returned and errno is set to EINVAL.
It returns 0 if the current policy was built with handle-
unknown=allow or handle-unknown=deny. In this state, policy
queries are treated according to security_deny_unknown(). -1 is
returned on error.
security_get_checkreqprot() can be used to determine whether
SELinux is configured to check the protection requested by the
application or the actual protection that will be applied by the
kernel (including the effects of READ_IMPLIES_EXEC) on mmap and
mprotect calls. It returns 0 if SELinux checks the actual
protection, 1 if it checks the requested protection, and -1 on
error.
selinux(8)
This page is part of the selinux (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 is not part of the original manual page), send a mail to
man-pages@man7.org
russell@coker.com.au 1 January 2004 security_getenforce(3)
Pages that refer to this page: security_disable(3), security_load_policy(3), selinux_status_open(3)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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