selinux_raw_context_to_color(3)

1selinux_raw_context_to_colorL(i3b)rary Functions Mansueallinux_raw_context_to_color(3)
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NAME

6       selinux_raw_context_to_color  -  Return RGB color string for an SELinux
7       security context
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SYNOPSIS

10       #include <selinux/selinux.h>
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12       int selinux_raw_context_to_color(char *raw,
13              char **color_str);
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DESCRIPTION

16       selinux_raw_context_to_color() returns a color_str  associated  to  the
17       raw  context  raw provided that the mcstransd(8) daemon is running, the
18       policy is an MLS type policy (MCS or MLS) and there is a color configu‐
19       ration file secolor.conf(5) (see the FILES section).
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21       The color_str string is a space separated list of eight hexadecimal RGB
22       triples, each prefixed by a hash character  (#).  These  represent  the
23       user:role:type:range  components  of the foreground and background col‐
24       ors. An example string is shown in the EXAMPLE section.
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26       The returned color_str string must be freed with free(3).
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28       If a color has not been configured for  a  specific  user,  role,  type
29       and/or      range      component      of      context     raw,     then
30       selinux_raw_context_to_color()  will  select  the  color  returned   in
31       color_str in order of precedence as follows:
32              role, type, range
33              user, type, range
34              user, role, range
35              user, role, type
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37       If there are no entries in the secolor.conf(5) file for any of the com‐
38       ponents of context raw (or the file is not present), then  the  default
39       string returned in color_str is:
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41              ----- user ---- ---- role ----  ---- type ----  ---- range ----
42              #000000 #ffffff #000000 #ffffff #000000 #ffffff #000000 #ffffff
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RETURN VALUE

46       On success, zero is returned.
47       On failure, -1 is returned with errno set appropriately.
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ERRORS

50       ENOENT If the mcstransd(8) daemon is not running.
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FILES

53       selinux_raw_context_to_color()  obtains  the  translated entry from the
54       active    policy    secolor.conf(5)     file     as     returned     by
55       selinux_colors_path(3).     The    file    format   is   described   in
56       secolor.conf(5).
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NOTES

59       1. The primary use of selinux_raw_context_to_color()  is  to  return  a
60       color  that  corresponds to a range, that can then be used to highlight
61       information at different MLS levels.
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63       2. The mcstransd(8) daemon process security level must dominate the raw
64       security level passed to it by the selinux_raw_context_to_color() func‐
65       tion. If not, the range color selected will be as defined by the  order
66       of precedence.
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EXAMPLE

69       selinux_raw_context_to_color()  returns  the  foreground and background
70       colors of the context string components (user:role:type:range)  as  RGB
71       triples as follows:
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74             user     :       role      :      type      :      range
75         fg       bg  :   fg       bg   :  fg       bg   :  fg       bg
76       #000000 #ffffff  #ffffff #000000  #d2b48c #ffa500  #000000 #008000
77        black   white :  white   black  : tan    orange  : black   green
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