mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-11-27 03:51:15 +08:00
1d506c26d9
This commit is the result of the following actions:
- Running gdb/copyright.py to update all of the copyright headers to
include 2024,
- Manually updating a few files the copyright.py script told me to
update, these files had copyright headers embedded within the
file,
- Regenerating gdbsupport/Makefile.in to refresh it's copyright
date,
- Using grep to find other files that still mentioned 2023. If
these files were updated last year from 2022 to 2023 then I've
updated them this year to 2024.
I'm sure I've probably missed some dates. Feel free to fix them up as
you spot them.
130 lines
3.4 KiB
C++
130 lines
3.4 KiB
C++
/* Fork a Unix child process, and set up to debug it, for GDBserver.
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Copyright (C) 1989-2024 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "server.h"
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#include "gdbsupport/job-control.h"
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#include "gdbsupport/scoped_restore.h"
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#include "nat/fork-inferior.h"
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#ifdef HAVE_SIGNAL_H
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#include <signal.h>
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#endif
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#ifdef SIGTTOU
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/* A file descriptor for the controlling terminal. */
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static int terminal_fd;
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/* TERMINAL_FD's original foreground group. */
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static pid_t old_foreground_pgrp;
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/* Hand back terminal ownership to the original foreground group. */
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static void
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restore_old_foreground_pgrp (void)
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{
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tcsetpgrp (terminal_fd, old_foreground_pgrp);
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}
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#endif
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/* See nat/fork-inferior.h. */
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void
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prefork_hook (const char *args)
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{
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client_state &cs = get_client_state ();
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threads_debug_printf ("args: %s", args);
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#ifdef SIGTTOU
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signal (SIGTTOU, SIG_DFL);
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signal (SIGTTIN, SIG_DFL);
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#endif
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/* Clear this so the backend doesn't get confused, thinking
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CONT_THREAD died, and it needs to resume all threads. */
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cs.cont_thread = null_ptid;
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}
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/* See nat/fork-inferior.h. */
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void
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postfork_hook (pid_t pid)
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{
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}
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/* See nat/fork-inferior.h. */
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void
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postfork_child_hook ()
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{
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/* This is set to the result of setpgrp, which if vforked, will be
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visible to you in the parent process. It's only used by humans
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for debugging. */
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static int debug_setpgrp = 657473;
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debug_setpgrp = gdb_setpgid ();
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if (debug_setpgrp == -1)
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perror (_("setpgrp failed in child"));
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}
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/* See nat/fork-inferior.h. */
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void
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gdb_flush_out_err ()
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{
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fflush (stdout);
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fflush (stderr);
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}
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/* See server.h. */
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void
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post_fork_inferior (int pid, const char *program)
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{
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client_state &cs = get_client_state ();
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#ifdef SIGTTOU
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signal (SIGTTOU, SIG_IGN);
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signal (SIGTTIN, SIG_IGN);
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terminal_fd = fileno (stderr);
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old_foreground_pgrp = tcgetpgrp (terminal_fd);
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tcsetpgrp (terminal_fd, pid);
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atexit (restore_old_foreground_pgrp);
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#endif
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process_info *proc = find_process_pid (pid);
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/* If the inferior fails to start, startup_inferior mourns the
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process (which deletes it), and then throws an error. This means
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that on exception return, we don't need or want to clear this
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flag back, as PROC won't exist anymore. Thus, we don't use a
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scoped_restore. */
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proc->starting_up = true;
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startup_inferior (the_target, pid,
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START_INFERIOR_TRAPS_EXPECTED,
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&cs.last_status, &cs.last_ptid);
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/* If we get here, the process was successfully started. */
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proc->starting_up = false;
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current_thread->last_resume_kind = resume_stop;
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current_thread->last_status = cs.last_status;
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signal_pid = pid;
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target_post_create_inferior ();
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fprintf (stderr, "Process %s created; pid = %d\n", program, pid);
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fflush (stderr);
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}
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