selinux_file_context_cmp
Section: Misc. Reference Manual Pages (3)
Updated: 08 March 2011
Page Index
NAME
selinux_file_context_cmp - Compare two SELinux security contexts excluding the 'user' component
SYNOPSIS
#include <selinux/selinux.h>
int selinux_file_context_cmp(const char *a,
-
const char *b);
DESCRIPTION
selinux_file_context_cmp()
compares two context strings excluding the user component with
strcmp(3)
as shown in the
EXAMPLE
section.
This is useful as for most object contexts, the user component is not relevant.
RETURN VALUE
The return values follow the
strcmp(3)
function, where:
-
0 if they are equal.
-
1 if
a
is greater than
b
-
-1 if
a
is less than
b
ERRORS
None.
NOTES
The contexts being compared do not specifically need to be file contexts.
EXAMPLE
If context
a
is:
-
user_u:user_r:user_t:s0
and context
b
is:
-
root:user_r:user_t:s0
then the actual strings compared are:
-
:user_r:user_t:s0 and :user_r:user_t:s0
Therefore they will match and
selinux_file_context_cmp()
will return zero.
SEE ALSO
selinux(8)