From: Jan Beulich <jbeulich@suse.com>
Date: Thu, 22 Apr 2021 12:50:25 +0000 (+0200)
Subject: lib: move strchr()
X-Git-Tag: archive/raspbian/4.16.0+51-g0941d6cb-1+rpi1~2^2~42^2~625
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=7095953455001bb2d95792bb0b9c822e479b1c57;p=xen.git

lib: move strchr()

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

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Julien Grall <jgrall@amazon.com>
---

diff --git a/xen/common/string.c b/xen/common/string.c
index 6042262b49..f433b15afd 100644
--- a/xen/common/string.c
+++ b/xen/common/string.c
@@ -56,21 +56,6 @@ int (strcasecmp)(const char *s1, const char *s2)
 }
 #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
diff --git a/xen/lib/Makefile b/xen/lib/Makefile
index 0c6c726adf..b69b516369 100644
--- 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
diff --git a/xen/lib/strchr.c b/xen/lib/strchr.c
new file mode 100644
index 0000000000..2eba3f1574
--- /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:
+ */