add support for SALUT_LOGFILE env variable to log output to a file

20070606102233-7fe3f-94ed9d813bc24e4630ecb141e14708132cf7a8cd.gz

1 files changed, 39 insertions, 0 deletions

diff --git a/src/debug.c b/src/debug.c
index 43f4bfa2..c105fde4 100644
--- a/src/debug.c
+++ b/src/debug.c
@@ -1,12 +1,51 @@
 
 #include <stdarg.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
 
 #include <glib.h>
+#include <glib/gstdio.h>
 
 #include <telepathy-glib/debug.h>
 
 #include "debug.h"
 
+void
+debug_set_log_file_from_env (void)
+{
+  const gchar *output_file;
+  int out;
+
+  output_file = g_getenv ("SALUT_LOGFILE");
+  if (output_file == NULL)
+    return;
+
+  out = g_open (output_file, O_WRONLY | O_CREAT, 0644);
+  if (out == -1)
+    {
+      g_warning ("Can't open logfile '%s': %s", output_file,
+          g_strerror (errno));
+      return;
+    }
+
+  if (dup2 (out, STDOUT_FILENO) == -1)
+    {
+      g_warning ("Error when duplicating stdout file descriptor: %s",
+          g_strerror (errno));
+      return;
+    }
+
+  if (dup2 (out, STDERR_FILENO) == -1)
+    {
+      g_warning ("Error when duplicating stderr file descriptor: %s",
+          g_strerror (errno));
+      return;
+    }
+}
+
 #ifdef ENABLE_DEBUG
 
 static DebugFlags flags = 0;