mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-05 08:14:19 +08:00
268a13a5a3
This is the next patch in the ongoing series to move gdbsever to the top level. This patch just renames the "common" directory. The idea is to do this move in two parts: first rename the directory (this patch), then move the directory to the top. This approach makes the patches a bit more tractable. I chose the name "gdbsupport" for the directory. However, as this patch was largely written by sed, we could pick a new name without too much difficulty. Tested by the buildbot. gdb/ChangeLog 2019-07-09 Tom Tromey <tom@tromey.com> * contrib/ari/gdb_ari.sh: Change common to gdbsupport. * configure: Rebuild. * configure.ac: Change common to gdbsupport. * gdbsupport: Rename from common. * acinclude.m4: Change common to gdbsupport. * Makefile.in (CONFIG_SRC_SUBDIR, COMMON_SFILES) (HFILES_NO_SRCDIR, stamp-version, ALLDEPFILES): Change common to gdbsupport. * aarch64-tdep.c, ada-lang.c, ada-lang.h, agent.c, alloc.c, amd64-darwin-tdep.c, amd64-dicos-tdep.c, amd64-fbsd-nat.c, amd64-fbsd-tdep.c, amd64-linux-nat.c, amd64-linux-tdep.c, amd64-nbsd-tdep.c, amd64-obsd-tdep.c, amd64-sol2-tdep.c, amd64-tdep.c, amd64-windows-tdep.c, arch-utils.c, arch/aarch64-insn.c, arch/aarch64.c, arch/aarch64.h, arch/amd64.c, arch/amd64.h, arch/arm-get-next-pcs.c, arch/arm-linux.c, arch/arm.c, arch/i386.c, arch/i386.h, arch/ppc-linux-common.c, arch/riscv.c, arch/riscv.h, arch/tic6x.c, arm-tdep.c, auto-load.c, auxv.c, ax-gdb.c, ax-general.c, ax.h, breakpoint.c, breakpoint.h, btrace.c, btrace.h, build-id.c, build-id.h, c-lang.h, charset.c, charset.h, cli/cli-cmds.c, cli/cli-cmds.h, cli/cli-decode.c, cli/cli-dump.c, cli/cli-option.h, cli/cli-script.c, coff-pe-read.c, command.h, compile/compile-c-support.c, compile/compile-c.h, compile/compile-cplus-symbols.c, compile/compile-cplus-types.c, compile/compile-cplus.h, compile/compile-loc2c.c, compile/compile.c, completer.c, completer.h, contrib/ari/gdb_ari.sh, corefile.c, corelow.c, cp-support.c, cp-support.h, cp-valprint.c, csky-tdep.c, ctf.c, darwin-nat.c, debug.c, defs.h, disasm-selftests.c, disasm.c, disasm.h, dtrace-probe.c, dwarf-index-cache.c, dwarf-index-cache.h, dwarf-index-write.c, dwarf2-frame.c, dwarf2expr.c, dwarf2loc.c, dwarf2read.c, event-loop.c, event-top.c, exceptions.c, exec.c, extension.h, fbsd-nat.c, features/aarch64-core.c, features/aarch64-fpu.c, features/aarch64-pauth.c, features/aarch64-sve.c, features/i386/32bit-avx.c, features/i386/32bit-avx512.c, features/i386/32bit-core.c, features/i386/32bit-linux.c, features/i386/32bit-mpx.c, features/i386/32bit-pkeys.c, features/i386/32bit-segments.c, features/i386/32bit-sse.c, features/i386/64bit-avx.c, features/i386/64bit-avx512.c, features/i386/64bit-core.c, features/i386/64bit-linux.c, features/i386/64bit-mpx.c, features/i386/64bit-pkeys.c, features/i386/64bit-segments.c, features/i386/64bit-sse.c, features/i386/x32-core.c, features/riscv/32bit-cpu.c, features/riscv/32bit-csr.c, features/riscv/32bit-fpu.c, features/riscv/64bit-cpu.c, features/riscv/64bit-csr.c, features/riscv/64bit-fpu.c, features/tic6x-c6xp.c, features/tic6x-core.c, features/tic6x-gp.c, filename-seen-cache.h, findcmd.c, findvar.c, fork-child.c, gcore.c, gdb_bfd.c, gdb_bfd.h, gdb_proc_service.h, gdb_regex.c, gdb_select.h, gdb_usleep.c, gdbarch-selftests.c, gdbthread.h, gdbtypes.h, gnu-nat.c, go32-nat.c, guile/guile.c, guile/scm-ports.c, guile/scm-safe-call.c, guile/scm-type.c, i386-fbsd-nat.c, i386-fbsd-tdep.c, i386-go32-tdep.c, i386-linux-nat.c, i386-linux-tdep.c, i386-tdep.c, i387-tdep.c, ia64-libunwind-tdep.c, ia64-linux-nat.c, inf-child.c, inf-ptrace.c, infcall.c, infcall.h, infcmd.c, inferior-iter.h, inferior.c, inferior.h, inflow.c, inflow.h, infrun.c, infrun.h, inline-frame.c, language.h, linespec.c, linux-fork.c, linux-nat.c, linux-tdep.c, linux-thread-db.c, location.c, machoread.c, macrotab.h, main.c, maint.c, maint.h, memattr.c, memrange.h, mi/mi-cmd-break.h, mi/mi-cmd-env.c, mi/mi-cmd-stack.c, mi/mi-cmd-var.c, mi/mi-interp.c, mi/mi-main.c, mi/mi-parse.h, minsyms.c, mips-linux-tdep.c, namespace.h, nat/aarch64-linux-hw-point.c, nat/aarch64-linux-hw-point.h, nat/aarch64-linux.c, nat/aarch64-sve-linux-ptrace.c, nat/amd64-linux-siginfo.c, nat/fork-inferior.c, nat/linux-btrace.c, nat/linux-btrace.h, nat/linux-namespaces.c, nat/linux-nat.h, nat/linux-osdata.c, nat/linux-personality.c, nat/linux-procfs.c, nat/linux-ptrace.c, nat/linux-ptrace.h, nat/linux-waitpid.c, nat/mips-linux-watch.c, nat/mips-linux-watch.h, nat/ppc-linux.c, nat/x86-dregs.c, nat/x86-dregs.h, nat/x86-linux-dregs.c, nat/x86-linux.c, nto-procfs.c, nto-tdep.c, objfile-flags.h, objfiles.c, objfiles.h, obsd-nat.c, observable.h, osdata.c, p-valprint.c, parse.c, parser-defs.h, ppc-linux-nat.c, printcmd.c, probe.c, proc-api.c, procfs.c, producer.c, progspace.h, psymtab.h, python/py-framefilter.c, python/py-inferior.c, python/py-ref.h, python/py-type.c, python/python.c, record-btrace.c, record-full.c, record.c, record.h, regcache-dump.c, regcache.c, regcache.h, remote-fileio.c, remote-fileio.h, remote-sim.c, remote.c, riscv-tdep.c, rs6000-aix-tdep.c, rust-exp.y, s12z-tdep.c, selftest-arch.c, ser-base.c, ser-event.c, ser-pipe.c, ser-tcp.c, ser-unix.c, skip.c, solib-aix.c, solib-target.c, solib.c, source-cache.c, source.c, source.h, sparc-nat.c, spu-linux-nat.c, stack.c, stap-probe.c, symfile-add-flags.h, symfile.c, symfile.h, symtab.c, symtab.h, target-descriptions.c, target-descriptions.h, target-memory.c, target.c, target.h, target/waitstatus.c, target/waitstatus.h, thread-iter.h, thread.c, tilegx-tdep.c, top.c, top.h, tracefile-tfile.c, tracefile.c, tracepoint.c, tracepoint.h, tui/tui-io.c, ui-file.c, ui-out.h, unittests/array-view-selftests.c, unittests/child-path-selftests.c, unittests/cli-utils-selftests.c, unittests/common-utils-selftests.c, unittests/copy_bitwise-selftests.c, unittests/environ-selftests.c, unittests/format_pieces-selftests.c, unittests/function-view-selftests.c, unittests/lookup_name_info-selftests.c, unittests/memory-map-selftests.c, unittests/memrange-selftests.c, unittests/mkdir-recursive-selftests.c, unittests/observable-selftests.c, unittests/offset-type-selftests.c, unittests/optional-selftests.c, unittests/parse-connection-spec-selftests.c, unittests/ptid-selftests.c, unittests/rsp-low-selftests.c, unittests/scoped_fd-selftests.c, unittests/scoped_mmap-selftests.c, unittests/scoped_restore-selftests.c, unittests/string_view-selftests.c, unittests/style-selftests.c, unittests/tracepoint-selftests.c, unittests/unpack-selftests.c, unittests/utils-selftests.c, unittests/xml-utils-selftests.c, utils.c, utils.h, valarith.c, valops.c, valprint.c, value.c, value.h, varobj.c, varobj.h, windows-nat.c, x86-linux-nat.c, xml-support.c, xml-support.h, xml-tdesc.h, xstormy16-tdep.c, xtensa-linux-nat.c, dwarf2read.h: Change common to gdbsupport. gdb/gdbserver/ChangeLog 2019-07-09 Tom Tromey <tom@tromey.com> * configure: Rebuild. * configure.ac: Change common to gdbsupport. * acinclude.m4: Change common to gdbsupport. * Makefile.in (SFILES, OBS, GDBREPLAY_OBS, IPA_OBJS) (version-generated.c, gdbsupport/%-ipa.o, gdbsupport/%.o): Change common to gdbsupport. * ax.c, event-loop.c, fork-child.c, gdb_proc_service.h, gdbreplay.c, gdbthread.h, hostio-errno.c, hostio.c, i387-fp.c, inferiors.c, inferiors.h, linux-aarch64-tdesc-selftest.c, linux-amd64-ipa.c, linux-i386-ipa.c, linux-low.c, linux-tic6x-low.c, linux-x86-low.c, linux-x86-tdesc-selftest.c, linux-x86-tdesc.c, lynx-i386-low.c, lynx-low.c, mem-break.h, nto-x86-low.c, regcache.c, regcache.h, remote-utils.c, server.c, server.h, spu-low.c, symbol.c, target.h, tdesc.c, tdesc.h, thread-db.c, tracepoint.c, win32-i386-low.c, win32-low.c: Change common to gdbsupport.
236 lines
5.2 KiB
C
236 lines
5.2 KiB
C
/* Serial interface for a pipe to a separate program
|
|
Copyright (C) 1999-2019 Free Software Foundation, Inc.
|
|
|
|
Contributed by Cygnus Solutions.
|
|
|
|
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 "defs.h"
|
|
#include "serial.h"
|
|
#include "ser-base.h"
|
|
#include "ser-unix.h"
|
|
|
|
#include "gdb_vfork.h"
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
#include "gdbsupport/gdb_sys_time.h"
|
|
#include <fcntl.h>
|
|
#include "gdbsupport/filestuff.h"
|
|
|
|
#include <signal.h>
|
|
|
|
static int pipe_open (struct serial *scb, const char *name);
|
|
static void pipe_close (struct serial *scb);
|
|
|
|
struct pipe_state
|
|
{
|
|
int pid;
|
|
};
|
|
|
|
/* Open up a raw pipe. */
|
|
|
|
static int
|
|
pipe_open (struct serial *scb, const char *name)
|
|
{
|
|
#if !HAVE_SOCKETPAIR
|
|
return -1;
|
|
#else
|
|
struct pipe_state *state;
|
|
/* This chunk: */
|
|
/* Copyright (c) 1988, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This code is derived from software written by Ken Arnold and
|
|
* published in UNIX Review, Vol. 6, No. 8.
|
|
*/
|
|
int pdes[2];
|
|
int err_pdes[2];
|
|
int pid;
|
|
|
|
if (gdb_socketpair_cloexec (AF_UNIX, SOCK_STREAM, 0, pdes) < 0)
|
|
return -1;
|
|
if (gdb_socketpair_cloexec (AF_UNIX, SOCK_STREAM, 0, err_pdes) < 0)
|
|
{
|
|
close (pdes[0]);
|
|
close (pdes[1]);
|
|
return -1;
|
|
}
|
|
|
|
/* Create the child process to run the command in. Note that the
|
|
apparent call to vfork() below *might* actually be a call to
|
|
fork() due to the fact that autoconf will ``#define vfork fork''
|
|
on certain platforms. */
|
|
pid = vfork ();
|
|
|
|
/* Error. */
|
|
if (pid == -1)
|
|
{
|
|
close (pdes[0]);
|
|
close (pdes[1]);
|
|
close (err_pdes[0]);
|
|
close (err_pdes[1]);
|
|
return -1;
|
|
}
|
|
|
|
if (fcntl (err_pdes[0], F_SETFL, O_NONBLOCK) == -1)
|
|
{
|
|
close (err_pdes[0]);
|
|
close (err_pdes[1]);
|
|
err_pdes[0] = err_pdes[1] = -1;
|
|
}
|
|
|
|
/* Child. */
|
|
if (pid == 0)
|
|
{
|
|
/* We don't want ^c to kill the connection. */
|
|
#ifdef HAVE_SETSID
|
|
pid_t sid = setsid ();
|
|
if (sid == -1)
|
|
signal (SIGINT, SIG_IGN);
|
|
#else
|
|
signal (SIGINT, SIG_IGN);
|
|
#endif
|
|
|
|
/* Re-wire pdes[1] to stdin/stdout. */
|
|
close (pdes[0]);
|
|
if (pdes[1] != STDOUT_FILENO)
|
|
{
|
|
dup2 (pdes[1], STDOUT_FILENO);
|
|
close (pdes[1]);
|
|
}
|
|
dup2 (STDOUT_FILENO, STDIN_FILENO);
|
|
|
|
if (err_pdes[0] != -1)
|
|
{
|
|
close (err_pdes[0]);
|
|
dup2 (err_pdes[1], STDERR_FILENO);
|
|
close (err_pdes[1]);
|
|
}
|
|
|
|
close_most_fds ();
|
|
execl ("/bin/sh", "sh", "-c", name, (char *) 0);
|
|
_exit (127);
|
|
}
|
|
|
|
/* Parent. */
|
|
close (pdes[1]);
|
|
if (err_pdes[1] != -1)
|
|
close (err_pdes[1]);
|
|
/* :end chunk */
|
|
state = XNEW (struct pipe_state);
|
|
state->pid = pid;
|
|
scb->fd = pdes[0];
|
|
scb->error_fd = err_pdes[0];
|
|
scb->state = state;
|
|
|
|
/* If we don't do this, GDB simply exits when the remote side dies. */
|
|
signal (SIGPIPE, SIG_IGN);
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
static void
|
|
pipe_close (struct serial *scb)
|
|
{
|
|
struct pipe_state *state = (struct pipe_state *) scb->state;
|
|
|
|
close (scb->fd);
|
|
scb->fd = -1;
|
|
|
|
if (state != NULL)
|
|
{
|
|
int wait_result, status;
|
|
|
|
/* Don't kill the task right away, give it a chance to shut down cleanly.
|
|
But don't wait forever though. */
|
|
#define PIPE_CLOSE_TIMEOUT 5
|
|
|
|
/* Assume the program will exit after SIGTERM. Might be
|
|
useful to print any remaining stderr output from
|
|
scb->error_fd while waiting. */
|
|
#define SIGTERM_TIMEOUT INT_MAX
|
|
|
|
wait_result = -1;
|
|
#ifdef HAVE_WAITPID
|
|
wait_result = wait_to_die_with_timeout (state->pid, &status,
|
|
PIPE_CLOSE_TIMEOUT);
|
|
#endif
|
|
if (wait_result == -1)
|
|
{
|
|
kill (state->pid, SIGTERM);
|
|
#ifdef HAVE_WAITPID
|
|
wait_to_die_with_timeout (state->pid, &status, SIGTERM_TIMEOUT);
|
|
#endif
|
|
}
|
|
|
|
if (scb->error_fd != -1)
|
|
close (scb->error_fd);
|
|
scb->error_fd = -1;
|
|
xfree (state);
|
|
scb->state = NULL;
|
|
}
|
|
}
|
|
|
|
int
|
|
gdb_pipe (int pdes[2])
|
|
{
|
|
#if !HAVE_SOCKETPAIR
|
|
errno = ENOSYS;
|
|
return -1;
|
|
#else
|
|
|
|
if (gdb_socketpair_cloexec (AF_UNIX, SOCK_STREAM, 0, pdes) < 0)
|
|
return -1;
|
|
|
|
/* If we don't do this, GDB simply exits when the remote side
|
|
dies. */
|
|
signal (SIGPIPE, SIG_IGN);
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
static const struct serial_ops pipe_ops =
|
|
{
|
|
"pipe",
|
|
pipe_open,
|
|
pipe_close,
|
|
NULL,
|
|
ser_base_readchar,
|
|
ser_base_write,
|
|
ser_base_flush_output,
|
|
ser_base_flush_input,
|
|
ser_base_send_break,
|
|
ser_base_raw,
|
|
ser_base_get_tty_state,
|
|
ser_base_copy_tty_state,
|
|
ser_base_set_tty_state,
|
|
ser_base_print_tty_state,
|
|
ser_base_setbaudrate,
|
|
ser_base_setstopbits,
|
|
ser_base_setparity,
|
|
ser_base_drain_output,
|
|
ser_base_async,
|
|
ser_unix_read_prim,
|
|
ser_unix_write_prim
|
|
};
|
|
|
|
void
|
|
_initialize_ser_pipe (void)
|
|
{
|
|
serial_add_interface (&pipe_ops);
|
|
}
|