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authorLennart Poettering <lennart@poettering.net>2016-01-25 20:31:11 +0100
committerLennart Poettering <lennart@poettering.net>2016-01-26 14:42:03 +0100
commit0061695507e889069c0c974cf85cd570f7ec9a88 (patch)
tree6d756e01c65a71f6e20a9e14e33a8096c87601b6 /src/basic/ordered-set.c
parentdce8364918220bde8f2b520f17931451da72ffcf (diff)
networkd: use an OrderedSet instead of Set to collect link domains
For the search domain logic the order is highly relevant, hence make sure when collecting the various search domains to add them to an ordered set, so that the order between search domains of a specific link is retained.
Diffstat (limited to 'src/basic/ordered-set.c')
-rw-r--r--src/basic/ordered-set.c64
1 files changed, 64 insertions, 0 deletions
diff --git a/src/basic/ordered-set.c b/src/basic/ordered-set.c
new file mode 100644
index 0000000000..2e0bdf6488
--- /dev/null
+++ b/src/basic/ordered-set.c
@@ -0,0 +1,64 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2016 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include "ordered-set.h"
+#include "strv.h"
+
+int ordered_set_consume(OrderedSet *s, void *p) {
+ int r;
+
+ r = ordered_set_put(s, p);
+ if (r <= 0)
+ free(p);
+
+ return r;
+}
+
+int ordered_set_put_strdup(OrderedSet *s, const char *p) {
+ char *c;
+ int r;
+
+ assert(s);
+ assert(p);
+
+ c = strdup(p);
+ if (!c)
+ return -ENOMEM;
+
+ r = ordered_set_consume(s, c);
+ if (r == -EEXIST)
+ return 0;
+
+ return r;
+}
+
+int ordered_set_put_strdupv(OrderedSet *s, char **l) {
+ int n = 0, r;
+ char **i;
+
+ STRV_FOREACH(i, l) {
+ r = ordered_set_put_strdup(s, *i);
+ if (r < 0)
+ return r;
+
+ n += r;
+ }
+
+ return n;
+}