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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | AUTHOR | SEE ALSO | COLOPHON |
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selinux_set_callback(3) SELinux API documentation selinux_set_callback(3)
selinux_set_callback - userspace SELinux callback facilities
#include <selinux/selinux.h>
void selinux_set_callback(int type, union selinux_callback
callback);
selinux_set_callback() sets the callback indicated by type to the
value of callback, which should be passed as a function pointer
cast to type union selinux_callback.
All callback functions should return a negative value with errno
set appropriately on error.
The available values for type are:
SELINUX_CB_LOG
int (*func_log) (int type, const char *fmt, ...);
This callback is used for logging and should process the
printf(3) style fmt string and arguments as appropriate.
The type argument indicates the type of message and will be
set to one of the following:
SELINUX_ERROR
SELINUX_WARNING
SELINUX_INFO
SELINUX_AVC
SELINUX_POLICYLOAD
SELINUX_SETENFORCE
SELINUX_ERROR, SELINUX_WARNING, and SELINUX_INFO indicate
standard log severity levels and are not auditable
messages.
The SELINUX_AVC, SELINUX_POLICYLOAD, and SELINUX_SETENFORCE
message types can be audited with AUDIT_USER_AVC,
AUDIT_USER_MAC_POLICY_LOAD, and AUDIT_USER_MAC_STATUS
values from libaudit, respectively. If they are not
audited, SELINUX_AVC should be considered equivalent to
SELINUX_ERROR; similarly, SELINUX_POLICYLOAD and
SELINUX_SETENFORCE should be considered equivalent to
SELINUX_INFO.
SELINUX_CB_AUDIT
int (*func_audit) (void *auditdata, security_class_t cls,
char *msgbuf, size_t msgbufsize);
This callback is used for supplemental auditing in AVC
messages. The auditdata and cls arguments are the values
passed to avc_has_perm(3). A human-readable interpretation
should be printed to msgbuf using no more than msgbufsize
characters.
SELINUX_CB_VALIDATE
int (*func_validate) (char **ctx);
This callback is used for context validation. The callback
may optionally modify the input context by setting the
target of the ctx pointer to a new context. In this case,
the old value should be freed with freecon(3). The value
of errno should be set to EINVAL to indicate an invalid
context.
SELINUX_CB_SETENFORCE
int (*func_setenforce) (int enforcing);
This callback is invoked when the system enforcing state
changes. The enforcing argument indicates the new value
and is set to 1 for enforcing mode, and 0 for permissive
mode.
SELINUX_CB_POLICYLOAD
int (*func_policyload) (int seqno);
This callback is invoked when the system security policy is
reloaded. The seqno argument is the current sequential
number of the policy generation in the system.
None.
None.
Eamon Walsh <[email protected]>
selabel_open(3), avc_init(3), avc_netlink_open(3), 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
[email protected]
20 Jun 2007 selinux_set_callback(3)
Pages that refer to this page: avc_has_perm(3), avc_init(3), avc_netlink_loop(3), avc_open(3), security_compute_av(3), selabel_lookup(3), selabel_lookup_best_match(3), selabel_open(3), selabel_partial_match(3), selabel_stats(3), selinux_restorecon(3), selinux_restorecon_xattr(3), selinux_set_mapping(3), selabel_db(5), selabel_file(5), selabel_media(5), selabel_x(5)
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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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