These routines are used in places outside of exec(2), so in preparation
for refactoring them, move them into a separate source file,
fs/kernel_read_file.c.
Signed-off-by: NKees Cook <keescook@chromium.org>
Reviewed-by: NMimi Zohar <zohar@linux.ibm.com>
Reviewed-by: NLuis Chamberlain <mcgrof@kernel.org>
Acked-by: NScott Branden <scott.branden@broadcom.com>
Link: https://lore.kernel.org/r/20201002173828.2099543-5-keescook@chromium.orgSigned-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>