On 06/05/2025 5:24 pm, Kevin Lampis wrote: > diff --git a/xen/include/xen/string.h b/xen/include/xen/string.h > index bd4a8f48e9..70c231b690 100644 > --- a/xen/include/xen/string.h > +++ b/xen/include/xen/string.h > @@ -26,6 +26,7 @@ size_t strnlen(const char *s, size_t count); > char *strpbrk(const char *cs,const char *ct); > char *strsep(char **s, const char *ct); > size_t strspn(const char *s, const char *accept); > +size_t strcspn(const char *s, const char *reject); > > void *memset(void *s, int c, size_t n); > void *memcpy(void *dest, const void *src, size_t n);
Lower down in this file, you also want a define aliasing to __builtin_strcspn() in the style of the others you'll see. In turn, you'll need to... > diff --git a/xen/lib/strcspn.c b/xen/lib/strcspn.c > new file mode 100644 > index 0000000000..42e3308dac > --- /dev/null > +++ b/xen/lib/strcspn.c > @@ -0,0 +1,22 @@ > +/* SPDX-License-Identifier: GPL-2.0 */ > +/* > + * Copyright (C) 1991, 1992 Linus Torvalds > + */ > + > +#include <xen/string.h> > + > +/** > + * strcspn - Calculate the length of the initial substring of @s which does > not contain letters in @reject > + * @s: The string to be searched > + * @reject: The string to avoid > + */ > +size_t strcspn(const char *s, const char *reject) ... write this as "size_t (strcspn)(const ..." to avoid the macro expansion in this one place. ~Andrew
