mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-21 04:42:53 +08:00
42a4f53d2b
This commit applies all changes made after running the gdb/copyright.py script. Note that one file was flagged by the script, due to an invalid copyright header (gdb/unittests/basic_string_view/element_access/char/empty.cc). As the file was copied from GCC's libstdc++-v3 testsuite, this commit leaves this file untouched for the time being; a patch to fix the header was sent to gcc-patches first. gdb/ChangeLog: Update copyright year range in all GDB files.
87 lines
2.4 KiB
C
87 lines
2.4 KiB
C
/* Job control and terminal related functions, for GDB and gdbserver
|
|
when running under Unix.
|
|
|
|
Copyright (C) 1986-2019 Free Software Foundation, Inc.
|
|
|
|
This file is part of GDB.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
|
|
|
#include "common-defs.h"
|
|
#include "job-control.h"
|
|
#ifdef HAVE_TERMIOS_H
|
|
#include <termios.h>
|
|
#endif
|
|
#include <unistd.h>
|
|
|
|
/* Nonzero if we have job control. */
|
|
int job_control;
|
|
|
|
/* Set the process group ID of the inferior.
|
|
|
|
Just using job_control only does part of it because setpgid or
|
|
setpgrp might not exist on a system without job control.
|
|
|
|
For a more clean implementation, in libiberty, put a setpgid which merely
|
|
calls setpgrp and a setpgrp which does nothing (any system with job control
|
|
will have one or the other). */
|
|
|
|
int
|
|
gdb_setpgid ()
|
|
{
|
|
int retval = 0;
|
|
|
|
if (job_control)
|
|
{
|
|
#ifdef HAVE_SETPGID
|
|
/* The call setpgid (0, 0) is supposed to work and mean the same
|
|
thing as this, but on Ultrix 4.2A it fails with EPERM (and
|
|
setpgid (getpid (), getpid ()) succeeds). */
|
|
retval = setpgid (getpid (), getpid ());
|
|
#else
|
|
#ifdef HAVE_SETPGRP
|
|
#ifdef SETPGRP_VOID
|
|
retval = setpgrp ();
|
|
#else
|
|
retval = setpgrp (getpid (), getpid ());
|
|
#endif
|
|
#endif /* HAVE_SETPGRP */
|
|
#endif /* HAVE_SETPGID */
|
|
}
|
|
|
|
return retval;
|
|
}
|
|
|
|
/* See common/common-terminal.h. */
|
|
|
|
void
|
|
have_job_control ()
|
|
{
|
|
/* OK, figure out whether we have job control. If termios is not
|
|
available, leave job_control 0. */
|
|
#if defined (HAVE_TERMIOS_H)
|
|
/* Do all systems with termios have the POSIX way of identifying job
|
|
control? I hope so. */
|
|
#ifdef _POSIX_JOB_CONTROL
|
|
job_control = 1;
|
|
#else
|
|
#ifdef _SC_JOB_CONTROL
|
|
job_control = sysconf (_SC_JOB_CONTROL);
|
|
#else
|
|
job_control = 0; /* Have to assume the worst. */
|
|
#endif /* _SC_JOB_CONTROL */
|
|
#endif /* _POSIX_JOB_CONTROL */
|
|
#endif /* HAVE_TERMIOS_H */
|
|
}
|