selabel_lookup(3) — Linux manual page


selabel_lookup(3)       SELinux API documentation      selabel_lookup(3)

NAME         top

       selabel_lookup - obtain SELinux security context from a string

SYNOPSIS         top

       #include <selinux/selinux.h>
       #include <selinux/label.h>

       int selabel_lookup(struct selabel_handle *hnd,
                          char **context,
                          const char *key, int type);

       int selabel_lookup_raw(struct selabel_handle *hnd,
                              char **context,
                              const char *key, int type);

DESCRIPTION         top

       selabel_lookup() performs a lookup operation on the handle hnd,
       returning the result in the memory pointed to by context, which
       must be freed by the caller using freecon(3).  The key and type
       parameters are the inputs to the lookup operation and are
       interpreted according to the specific backend that handle is open

       selabel_lookup_raw() behaves identically to selabel_lookup() but
       does not perform context translation.

RETURN VALUE         top

       On success, zero is returned.  On error, -1 is returned and errno
       is set appropriately.

ERRORS         top

       ENOENT No context corresponding to the input key and type was

       EINVAL The key and/or type inputs are invalid, or the context
              being returned failed validation.

       ENOMEM An attempt to allocate memory failed.

AUTHOR         top

       Eamon Walsh <>

SEE ALSO         top

       selabel_open(3), selabel_stats(3), selinux_set_callback(3),

COLOPHON         top

       This page is part of the selinux (Security-Enhanced Linux user-
       space libraries and tools) project.  Information about the
       project can be found at 
       ⟨⟩.  If you have a
       bug report for this manual page, see
       This page was obtained from the project's upstream Git repository
       ⟨⟩ on 2023-12-22.  (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
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       (which is not part of the original manual page), send a mail to

                               18 Jun 2007             selabel_lookup(3)

Pages that refer to this page: matchpathcon(3)selabel_open(3)selabel_stats(3)selabel_db(5)selabel_file(5)selabel_media(5)selabel_x(5)