huschi.net

selinux_set_callback(3)    SELinux API documentation   selinux_set_callback(3)
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 AT tycho.gov>
SEE ALSO
       selabel_open(3), avc_init(3), avc_netlink_open(3), selinux(8)
                                  20 Jun 2007          selinux_set_callback(3)