X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fshared%2Futil.c;h=11cab6dcf1710f590b2a879f019f274ead1e6020;hb=5ffa8c818120e35c89becd938d160235c069dd12;hp=891182a35b70d4460aa2082914753090305f6621;hpb=3d7415f43f0fe6a821d7bc4a341ba371e8a30ef3;p=elogind.git

diff --git a/src/shared/util.c b/src/shared/util.c
index 891182a35..11cab6dcf 100644
--- a/src/shared/util.c
+++ b/src/shared/util.c
@@ -4248,6 +4248,11 @@ bool hostname_is_valid(const char *s) {
         if (isempty(s))
                 return false;
 
+        /* Doesn't accept empty hostnames, hostnames with trailing or
+         * leading dots, and hostnames with multiple dots in a
+         * sequence. Also ensures that the length stays below
+         * HOST_NAME_MAX. */
+
         for (p = s, dot = true; *p; p++) {
                 if (*p == '.') {
                         if (dot)