At least on UN*X, the first argument - argv[0] - is supposed to be the

name of the program as used to run it (command name/path name).  Pass
that - otherwise, we pass "-i" as argv[0], and dumpcap ignores it and
treats the capture device as the first argument and doesn't handle it
correctly (i.e., it doesn't capture on that device).

svn path=/trunk/; revision=17277

1 files changed, 7 insertions, 4 deletions

diff --git a/capture_sync.c b/capture_sync.c
index 0edc715f3c..e013f699ea 100644
--- a/capture_sync.c
+++ b/capture_sync.c
@@ -334,6 +334,13 @@ sync_pipe_start(capture_options *capture_opts) {
     argv = g_malloc(sizeof (char *));
     *argv = NULL;
 
+    /* take ethereal's absolute program path and replace ethereal with dumpcap */
+    exename = g_strdup_printf("%s" G_DIR_SEPARATOR_S "dumpcap",
+                              get_progfile_dir());
+
+    /* Make that the first argument in the argument list (argv[0]). */
+    argv = sync_pipe_add_arg(argv, &argc, exename);
+
     argv = sync_pipe_add_arg(argv, &argc, "-i");
     argv = sync_pipe_add_arg(argv, &argc, capture_opts->iface);
 
@@ -406,10 +413,6 @@ sync_pipe_start(capture_options *capture_opts) {
     argv = sync_pipe_add_arg(argv, &argc, "-Z");
 #endif
 
-    /* take ethereal's absolute program path and replace ethereal with dumpcap */
-    exename = g_strdup_printf("%s" G_DIR_SEPARATOR_S "dumpcap",
-                              get_progfile_dir());
-
 #ifdef _WIN32
     argv = sync_pipe_add_arg(argv, &argc, "-B");
     g_snprintf(buffer_size, ARGV_NUMBER_LEN, "%d",capture_opts->buffer_size);