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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | FILES | EXAMPLE | SEE ALSO | COLOPHON |
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selinux_...xt_verify(3) Library Functions Manual selinux_...xt_verify(3)
selinux_file_context_verify - Compare the SELinux security
context on disk to the default security context required by the
policy file contexts file
#include <selinux/selinux.h>
int selinux_file_context_verify(const char *path, mode_t mode);
selinux_file_context_verify() compares the context of the
specified path that is held on disk (in the extended attribute),
to the system default entry held in the file contexts series of
files.
The mode may be zero.
Note that the two contexts are compared for "significant"
differences (i.e. the user component of the contexts are ignored)
as shown in the EXAMPLE section.
If the contexts significantly match, 1 (one) is returned.
If the contexts do not match 0 (zero) is returned and errno is
set to either ENOENT or EINVAL for the reasons listed in the
ERRORS section, or if errno = 0 then the contexts did not match.
On failure -1 is returned and errno set appropriately.
ENOTSUP
if extended attributes are not supported by the file
system.
ENOENT if there is no entry in the file contexts series of files
or path does not exist.
EINVAL if the entry in the file contexts series of files or path
are invalid, or the returned context fails validation.
ENOMEM if attempt to allocate memory failed.
The following configuration files (the file contexts series of
files) supporting the active policy will be used (should they
exist) to determine the path default context:
contexts/files/file_contexts - This file must exist.
contexts/files/file_contexts.local - If exists has local
customizations.
contexts/files/file_contexts.homedirs - If exists has
users home directory customizations.
contexts/files/file_contexts.subs - If exists has
substitutions that are then applied to the 'in memory'
version of the file contexts files.
If the files context is:
unconfined_u:object_r:admin_home_t:s0
and the default context defined in the file contexts file is:
system_u:object_r:admin_home_t:s0
then the actual strings compared are:
:object_r:admin_home_t:s0 and :object_r:admin_home_t:s0
Therefore they will match and selinux_file_context_verify() will
return 1.
selinux(8)
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 2024-06-14. (At
that time, the date of the most recent commit that was found in
the repository was 2023-05-11.) 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
[email protected]
SELinux API documentation 08 March 2011 selinux_...xt_verify(3)
Pages that refer to this page: selinux_lsetfilecon_default(3)
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HTML rendering created 2024-06-26 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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