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-rw-r--r--src/libsystemd/sd-bus/bus-internal.c20
-rw-r--r--src/libsystemd/sd-bus/bus-internal.h1
2 files changed, 21 insertions, 0 deletions
diff --git a/src/libsystemd/sd-bus/bus-internal.c b/src/libsystemd/sd-bus/bus-internal.c
index 0bea8cac49..91b288cd25 100644
--- a/src/libsystemd/sd-bus/bus-internal.c
+++ b/src/libsystemd/sd-bus/bus-internal.c
@@ -166,6 +166,26 @@ bool service_name_is_valid(const char *p) {
return true;
}
+char* service_name_startswith(const char *a, const char *b) {
+ const char *p;
+
+ if (!service_name_is_valid(a) ||
+ !service_name_is_valid(b))
+ return NULL;
+
+ p = startswith(a, b);
+ if (!p)
+ return NULL;
+
+ if (*p == 0)
+ return (char*) p;
+
+ if (*p == '.')
+ return (char*) p + 1;
+
+ return NULL;
+}
+
bool member_name_is_valid(const char *p) {
const char *q;
diff --git a/src/libsystemd/sd-bus/bus-internal.h b/src/libsystemd/sd-bus/bus-internal.h
index 07381485ec..f6b0211c2c 100644
--- a/src/libsystemd/sd-bus/bus-internal.h
+++ b/src/libsystemd/sd-bus/bus-internal.h
@@ -340,6 +340,7 @@ struct sd_bus {
bool interface_name_is_valid(const char *p) _pure_;
bool service_name_is_valid(const char *p) _pure_;
+char* service_name_startswith(const char *a, const char *b);
bool member_name_is_valid(const char *p) _pure_;
bool object_path_is_valid(const char *p) _pure_;
char *object_path_startswith(const char *a, const char *b) _pure_;