setkeycreatecon(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(char *context);

       int setkeycreatecon_raw(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

       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
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       ⟨⟩.  This
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       time, the date of the most recent commit that was found in the repos‐
       itory was 2020-10-31.)  If you discover any rendering problems in
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       provements to the information in this COLOPHON (which is not part of
       the original manual page), send a mail to             9 September 2008            getkeycreatecon(3)