X-Git-Url: https://git.octo.it/?p=collectd.git;a=blobdiff_plain;f=src%2Femail.c;fp=src%2Femail.c;h=b4a5e8114ac7b613b1a4903c877cb8f7a54000e5;hp=b7a5bcad24414538a07054ebac05dad52e9ec4a9;hb=f9953afbfc53862e81c5c4e3527afd76df7648cd;hpb=6c082e955466f0c451d608fb3cbb31481c02fa37

diff --git a/src/email.c b/src/email.c
index b7a5bcad..b4a5e811 100644
--- a/src/email.c
+++ b/src/email.c
@@ -403,9 +403,15 @@ static void *open_connection(void __attribute__((unused)) * arg) {
   {
     struct group sg;
     struct group *grp;
-    char grbuf[4096];
     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) {