Hey Emacs! This file is -*- nroff -*- source.

 Author: Eamon Walsh (ewalsh@tycho.nsa.gov) 2007
 "selinux_set_callback" "3" "20 Jun 2007" "" "SELinux API documentation"
 "NAME"
selinux_set_callback - userspace SELinux callback facilities
.

 "SYNOPSIS"
 #include <selinux/selinux.h>  "void selinux_set_callback(int " type ", union selinux_callback " callback ");" .

 "DESCRIPTION"
 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_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.
.

 "RETURN VALUE"
None.
.

 "ERRORS"
None.
.

 "AUTHOR"
Eamon Walsh <ewalsh@tycho.nsa.gov>
.

 "SEE ALSO"
 selabel_open (3),  avc_init (3),  avc_netlink_open (3),  selinux (8)