[v2,13/20] lib: move strchr()

Commit Message

Jan Beulich April 21, 2021, 2:24 p.m. UTC

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

Signed-off-by: Jan Beulich <[e-mail]>

Patch

--- a/xen/common/string.c
+++ b/xen/common/string.c
@@ -56,21 +56,6 @@  int (strcasecmp)(const char *s1, const c
 }
 #endif
 
-#ifndef __HAVE_ARCH_STRCHR
-/**
- * strchr - Find the first occurrence of a character in a string
- * @s: The string to be searched
- * @c: The character to search for
- */
-char *(strchr)(const char *s, int c)
-{
-	for(; *s != (char) c; ++s)
-		if (*s == '\0')
-			return NULL;
-	return (char *) s;
-}
-#endif
-
 #ifndef __HAVE_ARCH_STRRCHR
 /**
  * strrchr - Find the last occurrence of a character in a string
--- a/xen/lib/Makefile
+++ b/xen/lib/Makefile
@@ -14,6 +14,7 @@  lib-y += muldiv64.o
 lib-y += parse-size.o
 lib-y += rbtree.o
 lib-y += sort.o
+lib-y += strchr.o
 lib-y += strcmp.o
 lib-y += strlcat.o
 lib-y += strlcpy.o
--- /dev/null
+++ b/xen/lib/strchr.c
@@ -0,0 +1,28 @@ 
+/*
+ *  Copyright (C) 1991, 1992  Linus Torvalds
+ */
+
+#include <xen/string.h>
+
+/**
+ * strchr - Find the first occurrence of a character in a string
+ * @s: The string to be searched
+ * @c: The character to search for
+ */
+char *(strchr)(const char *s, int c)
+{
+	for(; *s != (char) c; ++s)
+		if (*s == '\0')
+			return NULL;
+	return (char *) s;
+}
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 8
+ * tab-width: 8
+ * indent-tabs-mode: t
+ * End:
+ */