git-gethostname

commit 507fe02799e7dbaba9ebaf3264731fc3b928ba77
Author: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date:   Thu Sep 7 00:51:17 2017 +0200

    hurd: fix gethostname(NULL, 0)

            * hurd/get-host.c (_hurd_get_host_config): Also check that more == 0
            before assuming that the file is empty.  Avoid testing buffer content
            when nread == 0.

Gbp-Pq: Topic hurd-i386
Gbp-Pq: Name git-gethostname.diff

diff --git a/hurd/get-host.c b/hurd/get-host.c
index be8345fbf9d244add3ac97beba80a7de40eca482..e5d05392754d02345fd3ac033e218986646f5ed8 100644 (file)
--- a/hurd/get-host.c
+++ b/hurd/get-host.c
@@ -65,7 +65,7 @@ _hurd_get_host_config (const char *item, char *buf, size_t buflen)
     }
 
   /* If the file is empty, give an empty value.  */
-  if (nread == 0)
+  if (nread == 0 && more == 0)
     {
       if (buflen != 0)
        *buf = '\0';
@@ -80,7 +80,7 @@ _hurd_get_host_config (const char *item, char *buf, size_t buflen)
   if (nread < buflen)
     buf[nread] = '\0';
   else
-    if (buf[nread - 1] != '\0')
+    if (nread != 0 && buf[nread - 1] != '\0')
       more = 1;
 
   if (more)