On Fri, Mar 26, 2021 at 01:44:48PM +0000, Christophe Leroy wrote: > This code provides architectures with a way to build command line > based on what is built in the kernel and what is handed over by the > bootloader, based on selected compile-time options. > > Signed-off-by: Christophe Leroy <christophe.leroy@xxxxxxxxxx> > --- > v3: > - Addressed comments from Will > - Added capability to have src == dst > --- > include/linux/cmdline.h | 57 +++++++++++++++++++++++++++++++++++++++++ > 1 file changed, 57 insertions(+) > create mode 100644 include/linux/cmdline.h > > diff --git a/include/linux/cmdline.h b/include/linux/cmdline.h > new file mode 100644 > index 000000000000..dea87edd41be > --- /dev/null > +++ b/include/linux/cmdline.h > @@ -0,0 +1,57 @@ > +/* SPDX-License-Identifier: GPL-2.0 */ > +#ifndef _LINUX_CMDLINE_H > +#define _LINUX_CMDLINE_H > + > +#include <linux/string.h> > + > +/* Allow architectures to override strlcat, powerpc can't use strings so early */ > +#ifndef cmdline_strlcat > +#define cmdline_strlcat strlcat > +#endif > + > +/* > + * This function will append or prepend a builtin command line to the command > + * line provided by the bootloader. Kconfig options can be used to alter > + * the behavior of this builtin command line. > + * @dst: The destination of the final appended/prepended string. > + * @src: The starting string or NULL if there isn't one. > + * @len: the length of dest buffer. > + */ Append or prepend ? Cisco requires both at the same time. This is why my implementation provides both. I can't use this with both at once. Daniel
