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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | FILES | NOTES | EXAMPLE | SEE ALSO | COLOPHON |
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selinux_r..._to_color(3) Library Functions Manualselinux_r..._to_color(3)
selinux_raw_context_to_color - Return RGB color string for an
SELinux security context
#include <selinux/selinux.h>
int selinux_raw_context_to_color(const char *raw,
char **color_str);
selinux_raw_context_to_color() returns a color_str associated to
the raw context raw provided that the mcstransd(8) daemon is
running, the policy is an MLS type policy (MCS or MLS) and there
is a color configuration file secolor.conf(5) (see the FILES
section).
The color_str string is a space separated list of eight
hexadecimal RGB triples, each prefixed by a hash character (#).
These represent the user:role:type:range components of the
foreground and background colors. An example string is shown in
the EXAMPLE section.
The returned color_str string must be freed with free(3).
If a color has not been configured for a specific user, role, type
and/or range component of context raw, then
selinux_raw_context_to_color() will select the color returned in
color_str in order of precedence as follows:
role, type, range
user, type, range
user, role, range
user, role, type
If there are no entries in the secolor.conf(5) file for any of the
components of context raw (or the file is not present), then the
default string returned in color_str is:
----- user ---- ---- role ---- ---- type ---- ---- range
----
#000000 #ffffff #000000 #ffffff #000000 #ffffff #000000
#ffffff
On success, zero is returned.
On failure, -1 is returned with errno set appropriately.
ENOENT If the mcstransd(8) daemon is not running.
selinux_raw_context_to_color() obtains the translated entry from
the active policy secolor.conf(5) file as returned by
selinux_colors_path(3). The file format is described in
secolor.conf(5).
1. The primary use of selinux_raw_context_to_color() is to return
a color that corresponds to a range, that can then be used to
highlight information at different MLS levels.
2. The mcstransd(8) daemon process security level must dominate
the raw security level passed to it by the
selinux_raw_context_to_color() function. If not, the range color
selected will be as defined by the order of precedence.
selinux_raw_context_to_color() returns the foreground and
background colors of the context string components
(user:role:type:range) as RGB triples as follows:
user : role : type : range
fg bg : fg bg : fg bg : fg bg
#000000 #ffffff #ffffff #000000 #d2b48c #ffa500 #000000 #008000
black white : white black : tan orange : black green
selinux(8), selinux_colors_path(3), mcstransd(8), secolor.conf(5),
selinux_raw_to_trans_context(3), selinux_trans_to_raw_context(3),
free(3)
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
man-pages@man7.org
SELinux API documentation 08 April 2011 selinux_r..._to_color(3)
Pages that refer to this page: selinux_colors_path(3), secolor.conf(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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