GDB/MI: Document support for -exec-run --start in -list-features

[deliverable/binutils-gdb.git] / gdb / fork-child.c

diff --git a/gdb/fork-child.c b/gdb/fork-child.c
index 69a59cc739427673d5143cc1d88b62a0965d56ca..61785fe97f7f5f2b1d7f7d89b1a3442a5f42a114 100644 (file)
--- a/gdb/fork-child.c
+++ b/gdb/fork-child.c
@@ -20,7 +20,7 @@
    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include "defs.h"
-#include "gdb_string.h"
+#include <string.h>
 #include "inferior.h"
 #include "terminal.h"
 #include "target.h"
@@ -32,6 +32,7 @@
 #include "command.h" /* for dont_repeat () */
 #include "gdbcmd.h"
 #include "solib.h"
+#include "filestuff.h"
 
 #include <signal.h>
 
@@ -149,11 +150,11 @@ fork_inferior (char *exec_file_arg, char *allargs, char **env,
   if (exec_file == 0)
     exec_file = get_exec_file (1);
 
-  /* STARTUP_WITH_SHELL is defined in inferior.h.  If 0,e we'll just
-    do a fork/exec, no shell, so don't bother figuring out what
-    shell.  */
+  /* 'startup_with_shell' is declared in inferior.h and bound to the
+     "set startup-with-shell" option.  If 0, we'll just do a
+     fork/exec, no shell, so don't bother figuring out what shell.  */
   shell_file = shell_file_arg;
-  if (STARTUP_WITH_SHELL)
+  if (startup_with_shell)
     {
       /* Figure out what shell to start up the user program under.  */
       if (shell_file == NULL)
@@ -313,6 +314,8 @@ fork_inferior (char *exec_file_arg, char *allargs, char **env,
 
   if (pid == 0)
     {
+      close_most_fds ();
+
       if (debug_fork)
        sleep (debug_fork);
 
@@ -416,6 +419,12 @@ startup_inferior (int ntraps)
   int terminal_initted = 0;
   ptid_t resume_ptid;
 
+  if (startup_with_shell)
+    {
+      /* One trap extra for exec'ing the shell.  */
+      pending_execs++;
+    }
+
   if (target_supports_multi_process ())
     resume_ptid = pid_to_ptid (ptid_get_pid (inferior_ptid));
   else
@@ -530,6 +539,15 @@ unset_exec_wrapper_command (char *args, int from_tty)
   exec_wrapper = NULL;
 }
 
+static void
+show_startup_with_shell (struct ui_file *file, int from_tty,
+                        struct cmd_list_element *c, const char *value)
+{
+  fprintf_filtered (file,
+                   _("Use of shell to start subprocesses is %s.\n"),
+                   value);
+}
+
 /* Provide a prototype to silence -Wmissing-prototypes.  */
 extern initialize_file_ftype _initialize_fork_child;
 
@@ -547,4 +565,12 @@ Show the wrapper for running programs."), NULL,
   add_cmd ("exec-wrapper", class_run, unset_exec_wrapper_command,
            _("Disable use of an execution wrapper."),
            &unsetlist);
+
+  add_setshow_boolean_cmd ("startup-with-shell", class_support,
+                          &startup_with_shell, _("\
+Set use of shell to start subprocesses.  The default is on."), _("\
+Show use of shell to start subprocesses."), NULL,
+                          NULL,
+                          show_startup_with_shell,
+                          &setlist, &showlist);
 }