/* Fork a Unix child process, and set up to debug it, for GDB.
- Copyright 1990, 91, 92, 93, 94, 1996, 1999 Free Software Foundation, Inc.
+ Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000,
+ 2001 Free Software Foundation, Inc.
Contributed by Cygnus Support.
This file is part of GDB.
#include "frame.h" /* required by inferior.h */
#include "inferior.h"
#include "target.h"
-#include "wait.h"
+#include "gdb_wait.h"
+#include "gdb_vfork.h"
#include "gdbcore.h"
#include "terminal.h"
#include "gdbthread.h"
+#include "command.h" /* for dont_repeat () */
#include <signal.h>
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
/* This just gets used as a default if we can't find SHELL */
#ifndef SHELL_FILE
* the four arguments "a", "b", "c", "d".
*/
static void
-breakup_args (
- scratch,
- argv)
- char *scratch;
- char **argv;
+breakup_args (char *scratch, char **argv)
{
char *cp = scratch;
ENV is the environment vector to pass. SHELL_FILE is the shell file,
or NULL if we should pick one. Errors reported with error(). */
+/* This function is NOT-REENTRANT. Some of the variables have been
+ made static to ensure that they survive the vfork() call. */
+
void
-fork_inferior (exec_file, allargs, env, traceme_fun, init_trace_fun,
- pre_trace_fun, shell_file)
- char *exec_file;
- char *allargs;
- char **env;
- void (*traceme_fun) PARAMS ((void));
- void (*init_trace_fun) PARAMS ((int));
- void (*pre_trace_fun) PARAMS ((void));
- char *shell_file;
+fork_inferior (char *exec_file_arg, char *allargs, char **env,
+ void (*traceme_fun) (void), void (*init_trace_fun) (int),
+ void (*pre_trace_fun) (void), char *shell_file_arg)
{
int pid;
char *shell_command;
/* This is set to the result of setpgrp, which if vforked, will be visible
to you in the parent process. It's only used by humans for debugging. */
static int debug_setpgrp = 657473;
+ static char *shell_file;
+ static char *exec_file;
char **save_our_env;
int shell = 0;
- char **argv;
+ static char **argv;
/* If no exec file handed to us, get it from the exec-file command -- with
a good, common error message if none is specified. */
+ exec_file = exec_file_arg;
if (exec_file == 0)
exec_file = get_exec_file (1);
* 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)
{
/* Figure out what shell to start up the user program under. */
if (pre_trace_fun != NULL)
(*pre_trace_fun) ();
-#if defined(USG) && !defined(HAVE_VFORK)
- pid = fork ();
-#else
if (debug_fork)
pid = fork ();
else
pid = vfork ();
-#endif
if (pid < 0)
perror_with_name ("vfork");
correct program, and are poised at the first instruction of the
new program. */
- /* Allow target dependant code to play with the new process. This might be
+ /* Allow target dependent code to play with the new process. This might be
used to have target-specific code initialize a variable in the new process
prior to executing the first instruction. */
TARGET_CREATE_INFERIOR_HOOK (pid);
clone will set it TRUE.
*/
void
-clone_and_follow_inferior (child_pid, followed_child)
- int child_pid;
- int *followed_child;
+clone_and_follow_inferior (int child_pid, int *followed_child)
{
extern int auto_solib_add;
error ("error getting pipe for handoff semaphore");
/* Clone the debugger. */
-#if defined(USG) && !defined(HAVE_VFORK)
- debugger_pid = fork ();
-#else
+#ifdef HAVE_VFORK
if (debug_fork)
debugger_pid = fork ();
else
debugger_pid = vfork ();
+#else
+ debugger_pid = fork ();
#endif
if (debugger_pid < 0)
/* Accept NTRAPS traps from the inferior. */
void
-startup_inferior (ntraps)
- int ntraps;
+startup_inferior (int ntraps)
{
int pending_execs = ntraps;
int terminal_initted;