X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fshared%2Funit-name.c;h=1baa6eb7e573bc9ba8de903dac0b4d5e721e987b;hp=7733aae0e72689192f7f4dad899271cea8f49226;hb=442e00839e4fc3c11506f5c8a9477b465865aecc;hpb=ede3a7967560506486e1e25d09ef4e74600851ff

diff --git a/src/shared/unit-name.c b/src/shared/unit-name.c
index 7733aae0e..1baa6eb7e 100644
--- a/src/shared/unit-name.c
+++ b/src/shared/unit-name.c
@@ -565,3 +565,30 @@ UnitType unit_name_to_type(const char *n) {
 
         return unit_type_from_string(e + 1);
 }
+
+int build_subslice(const char *slice, const char*name, char **subslice) {
+        char *ret;
+
+        assert(slice);
+        assert(name);
+        assert(subslice);
+
+        if (streq(slice, "-.slice"))
+                ret = strappend(name, ".slice");
+        else {
+                char *e;
+
+                e = endswith(slice, ".slice");
+                if (!e)
+                        return -EINVAL;
+
+                ret = new(char, (e - slice) + 1 + strlen(name) + 6 + 1);
+                if (!ret)
+                        return -ENOMEM;
+
+                stpcpy(stpcpy(stpcpy(mempcpy(ret, slice, e - slice), "-"), name), ".slice");
+        }
+
+        *subslice = ret;
+        return 0;
+}