X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=src%2Femail.c;h=d1df0a12ce040065685e84a1862653bcf1b83e56;hb=45492ba3d0119874e2f2878d68089fc8f62268a4;hp=34e999845c0511d430dd2fabb40193c80661188e;hpb=91590b1ae7c43a3c251407c947a973cbf58d7ba4;p=collectd.git

diff --git a/src/email.c b/src/email.c
index 34e99984..d1df0a12 100644
--- a/src/email.c
+++ b/src/email.c
@@ -403,15 +403,21 @@ static void *open_connection(void __attribute__((unused)) * arg) {
   {
     struct group sg;
     struct group *grp;
-    char grbuf[2048];
     int status;
 
+    long int grbuf_size = sysconf(_SC_GETGR_R_SIZE_MAX);
+    if (grbuf_size <= 0)
+      grbuf_size = sysconf(_SC_PAGESIZE);
+    if (grbuf_size <= 0)
+      grbuf_size = 4096;
+    char grbuf[grbuf_size];
+
     grp = NULL;
     status = getgrnam_r(group, &sg, grbuf, sizeof(grbuf), &grp);
     if (status != 0) {
       char errbuf[1024];
       log_warn("getgrnam_r (%s) failed: %s", group,
-               sstrerror(errno, errbuf, sizeof(errbuf)));
+               sstrerror(status, errbuf, sizeof(errbuf)));
     } else if (grp == NULL) {
       log_warn("No such group: `%s'", group);
     } else {