2 files changed, 31 insertions, 0 deletions
diff --git a/src/shared/strv.c b/src/shared/strv.c
index f86dddaf81..e418312d52 100644
--- a/src/shared/strv.c
+++ b/src/shared/strv.c
@@ -524,6 +524,16 @@ char **strv_uniq(char **l) {
         return l;
 }
 
+bool strv_is_uniq(char **l) {
+        char **i;
+
+        STRV_FOREACH(i, l)
+                if (strv_find(i+1, *i))
+                        return false;
+
+        return true;
+}
+
 char **strv_remove(char **l, const char *s) {
         char **f, **t;
 
@@ -664,3 +674,21 @@ int strv_extendf(char ***l, const char *format, ...) {
 
         return strv_consume(l, x);
 }
+
+char **strv_reverse(char **l) {
+        unsigned n, i;
+
+        n = strv_length(l);
+        if (n <= 1)
+                return l;
+
+        for (i = 0; i < n / 2; i++) {
+                char *t;
+
+                t = l[i];
+                l[i] = l[n-1-i];
+                l[n-1-i] = t;
+        }
+
+        return l;
+}
diff --git a/src/shared/strv.h b/src/shared/strv.h
index 9e5b1bb8b0..e385bf73b8 100644
--- a/src/shared/strv.h
+++ b/src/shared/strv.h
@@ -52,6 +52,7 @@ int strv_consume_prepend(char ***l, char *value);
 
 char **strv_remove(char **l, const char *s);
 char **strv_uniq(char **l);
+bool strv_is_uniq(char **l);
 
 bool strv_equal(char **a, char **b);
 
@@ -141,3 +142,5 @@ void strv_print(char **l);
                 _l ++;                                       \
                 _l[0];                                       \
         }))
+
+char **strv_reverse(char **l);