portability: take over strlcpy

portability/meson.build

@@ -6,6 +6,7 @@ libportability_src = []
 
 check_functions = [
 	['memrchr', 'memrchr.c', 'NEED_MEMRCHR', 'string.h'],
+	['strlcpy', 'strlcpy.c', 'NEED_STRLCPY', 'string.h'],
 ]
 
 

portability/string.h

@@ -3,3 +3,7 @@
 #ifdef NEED_MEMRCHR
 extern void *memrchr(const void *m, int c, size_t n);
 #endif
+
+#ifdef NEED_STRLCPY
+size_t strlcpy(char *dst, const char *src, size_t size);
+#endif

portability/strlcpy.c

@@ -0,0 +1,13 @@
+#include <stddef.h>
+#include <string.h>
+
+size_t strlcpy(char *dst, const char *src, size_t size)
+{
+	size_t ret = strlen(src), len;
+	if (!size) return ret;
+	len = ret;
+	if (len >= size) len = size - 1;
+	memcpy(dst, src, len);
+	dst[len] = 0;
+	return ret;
+}

src/apk_blob.h

@@ -127,8 +127,4 @@ void apk_blob_pull_base64(apk_blob_t *b, apk_blob_t to);
 void apk_blob_pull_hexdump(apk_blob_t *b, apk_blob_t to);
 int apk_blob_pull_blob_match(apk_blob_t *b, apk_blob_t match);
 
-#if defined(__GLIBC__) && !defined(__UCLIBC__)
-extern size_t strlcpy(char *dest, const char *src, size_t size);
-#endif
-
 #endif

src/blob.c

@@ -676,16 +676,3 @@ void apk_blob_pull_base64(apk_blob_t *b, apk_blob_t to)
 err:
 	*b = APK_BLOB_NULL;
 }
-
-#if defined(__GLIBC__) && !defined(__UCLIBC__)
-size_t strlcpy(char *dst, const char *src, size_t size)
-{
-	size_t ret = strlen(src), len;
-	if (!size) return ret;
-	len = ret;
-	if (len >= size) len = size - 1;
-	memcpy(dst, src, len);
-	dst[len] = 0;
-	return ret;
-}
-#endif