getkeycreatecon(3) — Linux manual page

getkeycreatecon(3)      SELinux API documentation      getkeycreatecon(3)

NAME         top

       getkeycreatecon, setkeycreatecon - get or set the SELinux security
       context used for creating a new kernel keyrings

SYNOPSIS         top

       #include <selinux/selinux.h>

       int getkeycreatecon(char **con);

       int getkeycreatecon_raw(char **con);

       int setkeycreatecon(const char *context);

       int setkeycreatecon_raw(const char *context);

DESCRIPTION         top

       getkeycreatecon() retrieves the context used for creating a new
       kernel keyring.  This returned context should be freed with
       freecon(3) if non-NULL.  getkeycreatecon() sets *con to NULL if no
       keycreate context has been explicitly set by the program (i.e.
       using the default policy behavior).

       setkeycreatecon() sets the context used for creating a new kernel
       keyring.  NULL can be passed to setkeycreatecon() to reset to the
       default policy behavior.  The keycreate context is automatically
       reset after the next execve(2), so a program doesn't need to
       explicitly sanitize it upon startup.

       setkeycreatecon() can be applied prior to library functions that
       internally perform an file creation, in order to set an file
       context on the objects.

       getkeycreatecon_raw() and setkeycreatecon_raw() behave identically
       to their non-raw counterparts but do not perform context
       translation.

       Note: Signal handlers that perform a setkeycreatecon() must take
       care to save, reset, and restore the keycreate context to avoid
       unexpected behavior.

       Note: Contexts are thread specific.

RETURN VALUE         top

       On error -1 is returned.  On success 0 is returned.

SEE ALSO         top

       selinux(8), freecon(3), getcon(3), getexeccon(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 ⟨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
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       man-pages@man7.org

dwalsh@redhat.com            9 September 2008          getkeycreatecon(3)

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