selinux_file_context_verify(3)ary Functions Manualnux_file_context_verify(3)
selinux_file_context_verify - Compare the SELinux security context on disk to the default security context required by the policy file con‐ texts 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.
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 2017-04-25. 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 firstname.lastname@example.org SELinux API documentation 08 March 2011 selinux_file_context_verify(3)
Pages that refer to this page: selinux_lsetfilecon_default(3)