Testsuite: more diag info if initial Exim startup fails

[users/jgh/exim.git] / src / exim_monitor / em_log.c

diff --git a/src/exim_monitor/em_log.c b/src/exim_monitor/em_log.c
index 409f2daf6c2e8a28b3e88a053fb81479e1c96a39..9ff994ced48909eda7eaffd92e85e820f599aa15 100644 (file)
--- a/src/exim_monitor/em_log.c
+++ b/src/exim_monitor/em_log.c
@@ -1,10 +1,8 @@
-/* $Cambridge: exim/src/exim_monitor/em_log.c,v 1.5 2007/01/31 16:52:12 ph10 Exp $ */
-

 /*************************************************
 *                 Exim Monitor                   *
 *************************************************/
 
 /*************************************************
 *                 Exim Monitor                   *
 *************************************************/
 

-/* Copyright (c) University of Cambridge 1995 - 2007 */
+/* Copyright (c) University of Cambridge 1995 - 2016 */

 /* See the file NOTICE for conditions of use and distribution. */
 
 /* This module contains code for scanning the main log,
 /* See the file NOTICE for conditions of use and distribution. */
 
 /* This module contains code for scanning the main log,


@@ -58,6 +56,8 @@ static int scrolled = FALSE;
 static int size = 0;
 static int top = 0;
 
 static int size = 0;
 static int top = 0;
 

+static void show_log(char *s, ...) PRINTF_FUNCTION(1,2);
+

 static void show_log(char *s, ...)
 {
 int length, newtop;
 static void show_log(char *s, ...)
 {
 int length, newtop;


@@ -217,7 +217,11 @@ uschar buffer[log_buffer_len];
 
 if (LOG != NULL)
   {
 
 if (LOG != NULL)
   {

-  fseek(LOG, log_position, SEEK_SET);
+  if (fseek(LOG, log_position, SEEK_SET))
+    {
+    perror("logfile fseek");
+    exit(1);
+    }

 
   while (Ufgets(buffer, log_buffer_len, LOG) != NULL)
     {
 
   while (Ufgets(buffer, log_buffer_len, LOG) != NULL)
     {


@@ -364,6 +368,8 @@ link count of zero on the currently open file. */
 if (log_datestamping)
   {
   uschar log_file_wanted[256];
 if (log_datestamping)
   {
   uschar log_file_wanted[256];

+  /* Do *not* use "%s" here, we need the %D datestamp in the log_file to
+   *   be expanded! */

   string_format(log_file_wanted, sizeof(log_file_wanted), CS log_file);
   if (Ustrcmp(log_file_wanted, log_file_open) != 0)
     {
   string_format(log_file_wanted, sizeof(log_file_wanted), CS log_file);
   if (Ustrcmp(log_file_wanted, log_file_open) != 0)
     {


@@ -391,7 +397,11 @@ if (LOG == NULL ||
     {
     if (LOG != NULL) fclose(LOG);
     LOG = TEST;
     {
     if (LOG != NULL) fclose(LOG);
     LOG = TEST;

-    fstat(fileno(LOG), &statdata);
+    if (fstat(fileno(LOG), &statdata))
+      {
+      fprintf(stderr, "fstat %s: %s\n", log_file_open, strerror(errno));
+      exit(1);
+      }

     log_inode = statdata.st_ino;
     }
   }
     log_inode = statdata.st_ino;
     }
   }