[PATCH v2 20/20] lib: move strsep()

[Jan Beulich <jbeulich@xxxxxxxx>]

Allow the function to be individually linkable, discardable, and
overridable.

Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

--- a/xen/common/Makefile
+++ b/xen/common/Makefile
@@ -40,7 +40,6 @@ obj-y += softirq.o
 obj-y += smp.o
 obj-y += spinlock.o
 obj-y += stop_machine.o
-obj-y += string.o
 obj-y += symbols.o
 obj-y += tasklet.o
 obj-y += time.o
--- a/xen/common/string.c
+++ /dev/null
@@ -1,47 +0,0 @@
-/*
- *  linux/lib/string.c
- *
- *  Copyright (C) 1991, 1992  Linus Torvalds
- */
-
-#include <xen/types.h>
-#include <xen/string.h>
-#include <xen/ctype.h>
-
-#ifndef __HAVE_ARCH_STRSEP
-/**
- * strsep - Split a string into tokens
- * @s: The string to be searched
- * @ct: The characters to search for
- *
- * strsep() updates @s to point after the token, ready for the next call.
- *
- * It returns empty tokens, too, behaving exactly like the libc function
- * of that name. In fact, it was stolen from glibc2 and de-fancy-fied.
- * Same semantics, slimmer shape. ;)
- */
-char * strsep(char **s, const char *ct)
-{
-       char *sbegin = *s, *end;
-
-       if (sbegin == NULL)
-               return NULL;
-
-       end = strpbrk(sbegin, ct);
-       if (end)
-               *end++ = '\0';
-       *s = end;
-
-       return sbegin;
-}
-#endif
-
-/*
- * Local variables:
- * mode: C
- * c-file-style: "BSD"
- * c-basic-offset: 8
- * tab-width: 8
- * indent-tabs-mode: t
- * End:
- */
--- a/xen/lib/Makefile
+++ b/xen/lib/Makefile
@@ -25,6 +25,7 @@ lib-y += strncmp.o
 lib-y += strnlen.o
 lib-y += strpbrk.o
 lib-y += strrchr.o
+lib-y += strsep.o
 lib-y += strspn.o
 lib-y += strstr.o
 lib-$(CONFIG_X86) += xxhash32.o
--- /dev/null
+++ b/xen/lib/strsep.c
@@ -0,0 +1,41 @@
+/*
+ *  Copyright (C) 1991, 1992  Linus Torvalds
+ */
+
+#include <xen/string.h>
+
+/**
+ * strsep - Split a string into tokens
+ * @s: The string to be searched
+ * @ct: The characters to search for
+ *
+ * strsep() updates @s to point after the token, ready for the next call.
+ *
+ * It returns empty tokens, too, behaving exactly like the libc function
+ * of that name. In fact, it was stolen from glibc2 and de-fancy-fied.
+ * Same semantics, slimmer shape. ;)
+ */
+char *strsep(char **s, const char *ct)
+{
+       char *sbegin = *s, *end;
+
+       if (sbegin == NULL)
+               return NULL;
+
+       end = strpbrk(sbegin, ct);
+       if (end)
+               *end++ = '\0';
+       *s = end;
+
+       return sbegin;
+}
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 8
+ * tab-width: 8
+ * indent-tabs-mode: t
+ * End:
+ */