X-Git-Url: http://git.ipfire.org/?a=blobdiff_plain;f=src%2Fbasic%2Fstring-util.h;h=aa007242663240f0f79d08e4455788bdbac8464d;hb=9b8ff18319965c7e599a70c2a1fab65823b53536;hp=5a10eeabfe90371f1fbd4a2ed13b32dfcb900dd3;hpb=e6ebebbe6aef5830793af515c2e3a998bde920b9;p=thirdparty%2Fsystemd.git

diff --git a/src/basic/string-util.h b/src/basic/string-util.h
index 5a10eeabfe9..aa007242663 100644
--- a/src/basic/string-util.h
+++ b/src/basic/string-util.h
@@ -209,3 +209,21 @@ static inline size_t strlen_ptr(const char *s) {
 
         return strlen(s);
 }
+
+/* Like startswith(), but operates on arbitrary memory blocks */
+static inline void *memory_startswith(const void *p, size_t sz, const char *token) {
+        size_t n;
+
+        assert(token);
+
+        n = strlen(token);
+        if (sz < n)
+                return NULL;
+
+        assert(p);
+
+        if (memcmp(p, token, n) != 0)
+                return NULL;
+
+        return (uint8_t*) p + n;
+}