1selinux_set_callback(3)    SELinux API documentation   selinux_set_callback(3)
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NAME

6       selinux_set_callback - userspace SELinux callback facilities.
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SYNOPSIS

9       #include <selinux/selinux.h>
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11       void selinux_set_callback(int type, union selinux_callback callback);
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DESCRIPTION

15       selinux_set_callback  sets  the callback indicated by type to the value
16       of callback, which should be passed as a function pointer cast to  type
17       union selinux_callback.
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19       All  callback  functions  should return a negative value with errno set
20       appropriately on error.
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22       The available values for type are:
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24       SELINUX_CB_LOG
25              int (*func_log) (int type, const char *fmt, ...);
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27              This callback  is  used  for  logging  and  should  process  the
28              printf(3)  style  fmt  string and arguments as appropriate.  The
29              type argument indicates the type of message and will be  set  to
30              one of the following:
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32              SELINUX_ERROR
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34              SELINUX_WARNING
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36              SELINUX_INFO
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38              SELINUX_AVC
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41       SELINUX_CB_AUDIT
42              int (*func_audit) (void *auditdata, security_class_t cls,
43                                 char *msgbuf, size_t msgbufsize);
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45              This callback is used for supplemental auditing in AVC messages.
46              The auditdata  and  cls  arguments  are  the  values  passed  to
47              avc_has_perm(3).   A  human-readable  interpretation  should  be
48              printed to msgbuf using no more than msgbufsize characters.
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51       SELINUX_CB_VALIDATE
52              int (*func_validate) (security_context_t *ctx);
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54              This callback is used for context validation.  The callback  may
55              optionally modify the input context by setting the target of the
56              ctx pointer to a new context.   In  this  case,  the  old  value
57              should  be  freed with freecon(3).  The value of errno should be
58              set to EINVAL to indicate an invalid context.
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61       SELINUX_CB_SETENFORCE
62              int (*func_setenforce) (int enforcing);
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64              This  callback  is  invoked  when  the  system  enforcing  state
65              changes.   The enforcing argument indicates the new value and is
66              set to 1 for enforcing mode, and 0 for permissive mode.
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69       SELINUX_CB_POLICYLOAD
70              int (*func_policyload) (int seqno);
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72              This callback is invoked when  the  system  security  policy  is
73              reloaded.   The  seqno argument is the current sequential number
74              of the policy generation in the system.
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RETURN VALUE

78       None.
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ERRORS

82       None.
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AUTHOR

86       Eamon Walsh <ewalsh@tycho.nsa.gov>
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SEE ALSO

90       selabel_open(3), avc_init(3), avc_netlink_open(3), selinux(8)
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95                                  20 Jun 2007          selinux_set_callback(3)
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