Merge pull request #495 from poettering/forwarding-fix

networkd: be more defensive when writing to ipv4/ipv6 forwarding sett…

1 files changed, 11 insertions, 0 deletions

diff --git a/src/basic/fileio.c b/src/basic/fileio.c
index ff6b1a7ed7..00fb6f8b5c 100644
--- a/src/basic/fileio.c
+++ b/src/basic/fileio.c
@@ -134,6 +134,17 @@ int read_one_line_file(const char *fn, char **line) {
         return 0;
 }
 
+int verify_one_line_file(const char *fn, const char *line) {
+        _cleanup_free_ char *value = NULL;
+        int r;
+
+        r = read_one_line_file(fn, &value);
+        if (r < 0)
+                return r;
+
+        return streq(value, line);
+}
+
 int read_full_stream(FILE *f, char **contents, size_t *size) {
         size_t n, l;
         _cleanup_free_ char *buf = NULL;