binutils-gdb/gdb/ser-pipe.c

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1999-07-12 20:08:43 +02:00
/* Serial interface for a pipe to a separate program
2007-01-09 18:59:20 +01:00
Copyright (C) 1999, 2000, 2001, 2007 Free Software Foundation, Inc.
1999-07-12 20:08:43 +02:00
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 2 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, write to the Free Software
* breakpoint.c: * arm-tdep.c: * ia64-tdep.c: * i386-tdep.c: * hpread.c: * hppa-tdep.c: * hppa-hpux-tdep.c: * gnu-nat.c: * gdbtypes.c: * gdbarch.h: * gdbarch.c: * eval.c: * dwarf2read.c: * dbxread.c: * copying: * symfile.c: * stabsread.c: * sh64-tdep.c: * sh-tdep.c: * s390-tdep.c: * rs6000-tdep.c: * remote.c: * remote-mips.c: * mips-tdep.c: * mdebugread.c: * linux-nat.c: * infrun.c: * xcoffread.c: * win32-nat.c: * valops.c: * utils.c: * tracepoint.c: * target.c: * symtab.c: * c-exp.y: * ada-valprint.c: * ada-typeprint.c: * ada-lex.l: * ada-lang.h: * ada-lang.c: * ada-exp.y: * alphafbsd-tdep.c: * alphabsd-tdep.h: * alphabsd-tdep.c: * alphabsd-nat.c: * alpha-tdep.h: * alpha-tdep.c: * alpha-osf1-tdep.c: * alpha-nat.c: * alpha-mdebug-tdep.c: * alpha-linux-tdep.c: * alpha-linux-nat.c: * aix-thread.c: * abug-rom.c: * arch-utils.c: * annotate.h: * annotate.c: * amd64obsd-tdep.c: * amd64obsd-nat.c: * amd64nbsd-tdep.c: * amd64nbsd-nat.c: * amd64fbsd-tdep.c: * amd64fbsd-nat.c: * amd64bsd-nat.c: * amd64-tdep.h: * amd64-tdep.c: * amd64-sol2-tdep.c: * amd64-nat.h: * amd64-nat.c: * amd64-linux-tdep.c: * amd64-linux-nat.c: * alphanbsd-tdep.c: * block.h: * block.c: * bfd-target.h: * bfd-target.c: * bcache.h: * bcache.c: * ax.h: * ax-general.c: * ax-gdb.h: * ax-gdb.c: * avr-tdep.c: * auxv.h: * auxv.c: * armnbsd-tdep.c: * armnbsd-nat.c: * arm-tdep.h: * arm-linux-nat.c: * arch-utils.h: * charset.c: * call-cmds.h: * c-valprint.c: * c-typeprint.c: * c-lang.h: * c-lang.c: * buildsym.h: * buildsym.c: * bsd-uthread.h: * bsd-uthread.c: * bsd-kvm.h: * bsd-kvm.c: * breakpoint.h: * core-regset.c: * core-aout.c: * completer.h: * completer.c: * complaints.h: * complaints.c: * command.h: * coffread.c: * coff-solib.h: * coff-solib.c: * coff-pe-read.h: * coff-pe-read.c: * cli-out.h: * cli-out.c: * charset.h: * dink32-rom.c: * dictionary.h: * dictionary.c: * demangle.c: * defs.h: * dcache.h: * dcache.c: * d10v-tdep.c: * cpu32bug-rom.c: * cp-valprint.c: * cp-support.h: * cp-support.c: * cp-namespace.c: * cp-abi.h: * cp-abi.c: * corelow.c: * corefile.c: * environ.c: * elfread.c: * dwarfread.c: * dwarf2loc.c: * dwarf2expr.h: * dwarf2expr.c: * dwarf2-frame.h: * dwarf2-frame.c: * dve3900-rom.c: * dummy-frame.h: * dummy-frame.c: * dsrec.c: * doublest.h: * doublest.c: * disasm.h: * disasm.c: * fork-child.c: * findvar.c: * fbsd-nat.h: * fbsd-nat.c: * f-valprint.c: * f-typeprint.c: * f-lang.h: * f-lang.c: * expression.h: * expprint.c: * exec.h: * exec.c: * exceptions.h: * exceptions.c: * event-top.h: * event-top.c: * event-loop.h: * event-loop.c: * gdb.c: * gdb-stabs.h: * gdb-events.h: * gdb-events.c: * gcore.c: * frv-tdep.h: * frv-tdep.c: * frv-linux-tdep.c: * frame.h: * frame.c: * frame-unwind.h: * frame-unwind.c: * frame-base.h: * frame-base.c: * gdb_vfork.h: * gdb_thread_db.h: * gdb_string.h: * gdb_stat.h: * gdb_regex.h: * gdb_ptrace.h: * gdb_proc_service.h: * gdb_obstack.h: * gdb_locale.h: * gdb_dirent.h: * gdb_curses.h: * gdb_assert.h: * gdbarch.sh: * gdb.h: * hpux-thread.c: * hppabsd-nat.c: * hppa-tdep.h: * hpacc-abi.c: * h8300-tdep.c: * gregset.h: * go32-nat.c: * gnu-v3-abi.c: * gnu-v2-abi.h: * gnu-v2-abi.c: * gnu-nat.h: * glibc-tdep.c: * gdbtypes.h: * gdbcore.h: * gdbcmd.h: * i386nbsd-tdep.c: * i386nbsd-nat.c: * i386gnu-tdep.c: * i386gnu-nat.c: * i386fbsd-tdep.c: * i386fbsd-nat.c: * i386bsd-tdep.c: * i386bsd-nat.h: * i386bsd-nat.c: * i386-tdep.h: * i386-sol2-nat.c: * i386-nto-tdep.c: * i386-nat.c: * i386-linux-tdep.h: * i386-linux-tdep.c: * i386-linux-nat.c: * i386-cygwin-tdep.c: * inf-ttrace.c: * inf-ptrace.h: * inf-ptrace.c: * inf-loop.h: * inf-loop.c: * inf-child.h: * inf-child.c: * ia64-tdep.h: * ia64-linux-nat.c: * i387-tdep.h: * i387-tdep.c: * i386v4-nat.c: * i386v-nat.c: * i386obsd-tdep.c: * i386obsd-nat.c: * kod.c: * jv-valprint.c: * jv-typeprint.c: * jv-lang.h: * jv-lang.c: * irix5-nat.c: * iq2000-tdep.c: * interps.h: * interps.c: * inftarg.c: * inflow.h: * inflow.c: * inferior.h: * infcmd.c: * infcall.h: * infcall.c: * inf-ttrace.h: * m32r-tdep.h: * m32r-tdep.c: * m32r-rom.c: * m32r-linux-tdep.c: * m32r-linux-nat.c: * m2-valprint.c: * m2-typeprint.c: * m2-lang.h: * m2-lang.c: * lynx-nat.c: * linux-thread-db.c: * linux-nat.h: * linespec.c: * libunwind-frame.h: * libunwind-frame.c: * language.h: * language.c: * macroexp.c: * macrocmd.c: * m88kbsd-nat.c: * m88k-tdep.h: * m88k-tdep.c: * m68klinux-tdep.c: * m68klinux-nat.c: * m68kbsd-tdep.c: * m68kbsd-nat.c: * m68k-tdep.h: * m68k-tdep.c: * mips-linux-nat.c: * mips-irix-tdep.c: * minsyms.c: * memattr.h: * memattr.c: * mem-break.c: * mdebugread.h: * main.h: * main.c: * macrotab.h: * macrotab.c: * macroscope.h: * macroscope.c: * macroexp.h: * nbsd-tdep.c: * mt-tdep.c: * monitor.h: * monitor.c: * mn10300-tdep.h: * mn10300-tdep.c: * mn10300-linux-tdep.c: * mipsv4-nat.c: * mipsread.c: * mipsnbsd-tdep.h: * mipsnbsd-tdep.c: * mipsnbsd-nat.c: * mips64obsd-tdep.c: * mips64obsd-nat.c: * mips-tdep.h: * mips-mdebug-tdep.c: * mips-linux-tdep.c: * osabi.h: * osabi.c: * ocd.h: * ocd.c: * observer.c: * objfiles.h: * objfiles.c: * objc-lang.h: * objc-lang.c: * objc-exp.y: * nto-tdep.h: * nto-tdep.c: * nto-procfs.c: * nlmread.c: * nbsd-tdep.h: * ppcobsd-tdep.c: * ppcobsd-nat.c: * ppcnbsd-tdep.h: * ppcnbsd-tdep.c: * ppcnbsd-nat.c: * ppcbug-rom.c: * ppc-tdep.h: * ppc-sysv-tdep.c: * ppc-linux-tdep.c: * ppc-linux-nat.c: * ppc-bdm.c: * parser-defs.h: * parse.c: * p-valprint.c: * p-typeprint.c: * p-lang.h: * p-lang.c: * remote-fileio.h: * remote-fileio.c: * remote-est.c: * remote-e7000.c: * regset.h: * regset.c: * reggroups.h: * reggroups.c: * regcache.h: * regcache.c: * proc-why.c: * proc-service.c: * proc-events.c: * printcmd.c: * ppcobsd-tdep.h: * sentinel-frame.h: * sentinel-frame.c: * scm-valprint.c: * scm-tags.h: * scm-lang.h: * scm-lang.c: * scm-exp.c: * s390-tdep.h: * rom68k-rom.c: * remote.h: * remote-utils.c: * remote-st.c: * remote-sim.c: * remote-sds.c: * remote-rdp.c: * remote-rdi.c: * remote-hms.c: * sim-regno.h: * shnbsd-tdep.h: * shnbsd-tdep.c: * shnbsd-nat.c: * sh-tdep.h: * serial.h: * serial.c: * ser-unix.h: * ser-unix.c: * ser-tcp.c: * ser-pipe.c: * ser-go32.c: * ser-e7kpc.c: * ser-base.h: * ser-base.c: * solib.c: * solib-svr4.h: * solib-svr4.c: * solib-sunos.c: * solib-som.h: * solib-som.c: * solib-pa64.h: * solib-pa64.c: * solib-osf.c: * solib-null.c: * solib-legacy.c: * solib-irix.c: * solib-frv.c: * solib-aix5.c: * sol-thread.c: * sparc64-linux-tdep.c: * sparc64-linux-nat.c: * sparc-tdep.h: * sparc-tdep.c: * sparc-sol2-tdep.c: * sparc-sol2-nat.c: * sparc-nat.h: * sparc-nat.c: * sparc-linux-tdep.c: * sparc-linux-nat.c: * source.h: * source.c: * somread.c: * solist.h: * solib.h: * std-regs.c: * stack.h: * stack.c: * stabsread.h: * sparcobsd-tdep.c: * sparcnbsd-tdep.c: * sparcnbsd-nat.c: * sparc64obsd-tdep.c: * sparc64nbsd-tdep.c: * sparc64nbsd-nat.c: * sparc64fbsd-tdep.c: * sparc64fbsd-nat.c: * sparc64-tdep.h: * sparc64-tdep.c: * sparc64-sol2-tdep.c: * sparc64-nat.c: * ui-file.c: * typeprint.h: * typeprint.c: * tramp-frame.h: * tramp-frame.c: * trad-frame.h: * trad-frame.c: * tracepoint.h: * top.c: * tobs.inc: * thread.c: * terminal.h: * target.h: * symfile.h: * stop-gdb.c: * vaxbsd-nat.c: * vax-tdep.h: * vax-tdep.c: * vax-nat.c: * varobj.h: * varobj.c: * value.h: * value.c: * valprint.h: * valprint.c: * v850-tdep.c: * uw-thread.c: * user-regs.c: * ui-out.h: * ui-out.c: * ui-file.h: * xcoffsolib.h: * xcoffsolib.c: * wrapper.c: * wince.c: * wince-stub.h: * wince-stub.c: * vaxobsd-tdep.c: * vaxnbsd-tdep.c: * gdb_gcore.sh: * copying.c: * configure.ac: * aclocal.m4: * acinclude.m4: * reply_mig_hack.awk: * observer.sh: * gdb_mbuild.sh: * arm-linux-tdep.c: * blockframe.c: * dbug-rom.c: * environ.h: * dwarf2loc.h: * gdb-events.sh: * glibc-tdep.h: * gdb_wait.h: * gdbthread.h: * i386-sol2-tdep.c: * hppabsd-tdep.c: * hppa-linux-nat.c: * hppa-hpux-nat.c: * ia64-linux-tdep.c: * infptrace.c: * linespec.h: * maint.c: * mips-mdebug-tdep.h: * remote-m32r-sdi.c: * s390-nat.c: * rs6000-nat.c: * remote-utils.h: * sh3-rom.c: * sh-linux-tdep.c: * top.h: * symtab.h: * symmisc.c: * symfile-mem.c: * srec.h: * user-regs.h: * version.h: * valarith.c: * xstormy16-tdep.c: * wrapper.h: * Makefile.in: * f-exp.y: * cris-tdep.c: * cp-name-parser.y: * procfs.c: * proc-utils.h: * proc-flags.c: * proc-api.c: * p-exp.y: * m68hc11-tdep.c: * m2-exp.y: * kod.h: * kod-cisco.c: * jv-exp.y: * hppa-linux-tdep.c: Add (c) after Copyright. Update the FSF address.
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Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
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#include "defs.h"
#include "serial.h"
* Makefile.in (SFILES): Add ser-base.c. (ser_base_h): New variable. (ser-base.o): New target. (ser-pipe.o): Depend on $(ser_base_h). (ser-tcp.o): Likewise. (ser-unix.o): Likewise. Do not depend on $(event_loop_h). * configure.ac (SER_HARDWIRE): Include ser-base.o where appropriate. * ser-base.c: New file. (push_event): Move from ser-unix.c. (fd_event): Likewise. (reschedule): Likewise. (ser_unix_write): Likewise. (ser_unix_nop_flush_output): Likewise. (ser_unix_flush_input): Likewise. (ser_unix_nop_send_break): Likewise. (ser_unix_nop_drain_output): Likewise. (ser_unix_nop_raw): Likewise. (ser_unix_nop_get_tty_state): Likewise. (ser_unix_nop_set_tty_state): Likewise. (ser_unix_nop_noflush_set_tty_state): Likewise. (ser_unix_nop_print_tty_state): Likewise. (ser_unix_nop_setbaudrate): Likewise. (ser_unix_nop_setstopbits): Likewise. (ser_unix_async): Likewise. * ser-base.h: New file. * ser-pipe.c (ser-base.h): Include it. * ser-tcp.c (ser-base.h): Likewise. * ser-unix.h (ser_unix_nop_flush_output): Remove. (ser_unix_flush_input): Likewise. (ser_unix_nop_send_break): Likewise. (ser_unix_nop_raw): Likewise. (ser_unix_nop_get_tty_state): Likewise. (ser_unix_nop_set_tty_state): Likewise. (ser_unix_nop_print_tty_state): Likewise. (ser_unix_nop_noflush_set_tty_state): Likewise. (ser_unix_nop_setbaudrate): Likewise. (ser_unix_nop_setstopbits): Likewise. (ser_unix_nop_drain_output): Likewise. (ser_unix_wait_for): Likewise. (ser_unix_write): Likewise. (ser_unix_async): Likewise. * ser-unix.c (event-loop.h): Do not include it. (push_event): Move to ser-base.c. (fd_event): Likewise. (reschedule): Likewise. (ser_unix_write): Likewise. (ser_unix_nop_flush_output): Likewise. (ser_unix_flush_input): Likewise. (ser_unix_nop_send_break): Likewise. (ser_unix_nop_drain_output): Likewise. (ser_unix_nop_raw): Likewise. (ser_unix_nop_get_tty_state): Likewise. (ser_unix_nop_set_tty_state): Likewise. (ser_unix_nop_noflush_set_tty_state): Likewise. (ser_unix_nop_print_tty_state): Likewise. (ser_unix_nop_setbaudrate): Likewise. (ser_unix_nop_setstopbits): Likewise. (ser_unix_async): Likewise. (ser_unix_wait_for): Make it static. * configure: Regenerated.
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#include "ser-base.h"
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#include "ser-unix.h"
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#include "gdb_vfork.h"
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#include <sys/types.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <fcntl.h>
#include "gdb_string.h"
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#include <signal.h>
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static int pipe_open (struct serial *scb, const char *name);
static void pipe_close (struct serial *scb);
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extern void _initialize_ser_pipe (void);
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struct pipe_state
{
int pid;
};
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/* Open up a raw pipe */
static int
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pipe_open (struct serial *scb, const char *name)
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{
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#if !HAVE_SOCKETPAIR
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return -1;
#else
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struct pipe_state *state;
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/* 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 pid;
if (socketpair (AF_UNIX, SOCK_STREAM, 0, pdes) < 0)
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. */
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pid = vfork ();
/* Error. */
if (pid == -1)
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{
close (pdes[0]);
close (pdes[1]);
return -1;
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}
/* Child. */
if (pid == 0)
{
/* re-wire pdes[1] to stdin/stdout */
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close (pdes[0]);
if (pdes[1] != STDOUT_FILENO)
{
dup2 (pdes[1], STDOUT_FILENO);
close (pdes[1]);
}
dup2 (STDOUT_FILENO, STDIN_FILENO);
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#if 0
/* close any stray FD's - FIXME - how? */
/* POSIX.2 B.3.2.2 "popen() shall ensure that any streams
from previous popen() calls that remain open in the
parent process are closed in the new child process. */
for (old = pidlist; old; old = old->next)
close (fileno (old->fp)); /* don't allow a flush */
#endif
execl ("/bin/sh", "sh", "-c", name, (char *) 0);
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_exit (127);
}
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/* Parent. */
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close (pdes[1]);
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/* :end chunk */
state = XMALLOC (struct pipe_state);
state->pid = pid;
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scb->fd = pdes[0];
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scb->state = state;
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/* If we don't do this, GDB simply exits when the remote side dies. */
signal (SIGPIPE, SIG_IGN);
return 0;
#endif
}
static void
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pipe_close (struct serial *scb)
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{
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struct pipe_state *state = scb->state;
if (state != NULL)
{
int pid = state->pid;
close (scb->fd);
scb->fd = -1;
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xfree (state);
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scb->state = NULL;
kill (pid, SIGTERM);
/* Might be useful to check that the child does die. */
}
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}
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static struct serial_ops pipe_ops;
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void
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_initialize_ser_pipe (void)
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{
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struct serial_ops *ops = XMALLOC (struct serial_ops);
memset (ops, 0, sizeof (struct serial_ops));
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ops->name = "pipe";
ops->next = 0;
ops->open = pipe_open;
ops->close = pipe_close;
ops->readchar = ser_base_readchar;
* ser-base.c (ser_unix_write): Rename to ... (ser_base_write): ... this. (ser_unix_nop_flush_output): Rename to ... (ser_base_flush_output): ... this. (ser_unix_flush_input): Rename to ... (ser_base_flush_input): ... this. (ser_unix_nop_send_break): Rename to ... (ser_base_send_break): ... this. (ser_unix_nop_drain_output): Rename to ... (ser_base_drain_output): ... this. (ser_unix_nop_raw): Rename to ... (ser_base_raw): ... this. (ser_unix_nop_get_tty_state): Rename to ... (ser_base_set_tty_state): ... this. (ser_unix_nop_noflush_set_tty_state): Rename to ... (ser_base_noflush_set_tty_state): ... this. (ser_unix_nop_print_tty_state): Rename to ... (ser_base_print_tty_state): ... this. (ser_unix_nop_setbaudrate): Rename to ... (ser_base_setbaudrate): ... this. (ser_unix_nop_setstopbits): Rename to ... (ser_base_setstopbits): ... this. (ser_unix_async): Rename to ... (ser_base_async): ... this. * ser-base.h (ser_unix_write): Rename to ... (ser_base_write): ... this. (ser_unix_nop_flush_output): Rename to ... (ser_base_flush_output): ... this. (ser_unix_flush_input): Rename to ... (ser_base_flush_input): ... this. (ser_unix_nop_send_break): Rename to ... (ser_base_send_break): ... this. (ser_unix_nop_drain_output): Rename to ... (ser_base_drain_output): ... this. (ser_unix_nop_raw): Rename to ... (ser_base_raw): ... this. (ser_unix_nop_get_tty_state): Rename to ... (ser_base_set_tty_state): ... this. (ser_unix_nop_noflush_set_tty_state): Rename to ... (ser_base_noflush_set_tty_state): ... this. (ser_unix_nop_print_tty_state): Rename to ... (ser_base_print_tty_state): ... this. (ser_unix_nop_setbaudrate): Rename to ... (ser_base_setbaudrate): ... this. (ser_unix_nop_setstopbits): Rename to ... (ser_base_setstopbits): ... this. (ser_unix_async): Rename to ... (ser_base_async): ... this. * ser-pipe.c (_initialize_ser_pipe): Update accordingly. * ser-tcp.c (_initialize_ser_tcp): Likewise. * ser-unix.c (hardwire_flush_input): Likewise. (_initializer_ser_hardwire): Likewise.
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ops->write = ser_base_write;
ops->flush_output = ser_base_flush_output;
ops->flush_input = ser_base_flush_input;
ops->send_break = ser_base_send_break;
ops->go_raw = ser_base_raw;
ops->get_tty_state = ser_base_get_tty_state;
ops->set_tty_state = ser_base_set_tty_state;
ops->print_tty_state = ser_base_print_tty_state;
ops->noflush_set_tty_state = ser_base_noflush_set_tty_state;
ops->setbaudrate = ser_base_setbaudrate;
ops->setstopbits = ser_base_setstopbits;
ops->drain_output = ser_base_drain_output;
ops->async = ser_base_async;
ops->read_prim = ser_unix_read_prim;
ops->write_prim = ser_unix_write_prim;
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serial_add_interface (ops);
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}