982 lines
24 KiB
C
982 lines
24 KiB
C
/* Target-vector operations for controlling Unix child processes, for GDB.
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Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996
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Free Software Foundation, Inc.
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Contributed by Cygnus Support.
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## Contains temporary hacks..
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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 2 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, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "defs.h"
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#include "frame.h" /* required by inferior.h */
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#include "inferior.h"
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#include "target.h"
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#include "gdbcore.h"
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#include "command.h"
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#include "gdb_stat.h"
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#include <signal.h>
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#include <sys/types.h>
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#include <fcntl.h>
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#ifdef HAVE_WAIT_H
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# include <wait.h>
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#else
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# ifdef HAVE_SYS_WAIT_H
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# include <sys/wait.h>
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# endif
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#endif
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/* "wait.h" fills in the gaps left by <wait.h> */
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#include "wait.h"
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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extern struct symtab_and_line *
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child_enable_exception_callback PARAMS ((enum exception_event_kind, int));
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extern struct exception_event_record *
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child_get_current_exception_event PARAMS ((void));
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static void
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child_prepare_to_store PARAMS ((void));
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#ifndef CHILD_WAIT
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static int child_wait PARAMS ((int, struct target_waitstatus *));
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#endif /* CHILD_WAIT */
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#if !defined(CHILD_POST_WAIT)
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void
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child_post_wait PARAMS ((int, int));
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#endif
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static void child_open PARAMS ((char *, int));
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static void
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child_files_info PARAMS ((struct target_ops *));
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static void
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child_detach PARAMS ((char *, int));
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static void
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child_detach_from_process PARAMS ((int, char *, int, int));
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static void
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child_attach PARAMS ((char *, int));
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static void
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child_attach_to_process PARAMS ((char *, int, int));
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#if !defined(CHILD_POST_ATTACH)
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static void
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child_post_attach PARAMS ((int));
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#endif
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static void
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child_require_attach PARAMS ((char *, int));
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static void
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child_require_detach PARAMS ((int, char *, int));
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static void
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ptrace_me PARAMS ((void));
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static void
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ptrace_him PARAMS ((int));
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static void
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child_create_inferior PARAMS ((char *, char *, char **));
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static void
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child_mourn_inferior PARAMS ((void));
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static int
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child_can_run PARAMS ((void));
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static void
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child_stop PARAMS ((void));
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#ifndef CHILD_THREAD_ALIVE
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int child_thread_alive PARAMS ((int));
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#endif
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extern char **environ;
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/* Forward declaration */
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extern struct target_ops child_ops;
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int child_suppress_run = 0; /* Non-zero if inftarg should pretend not to
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be a runnable target. Used by targets
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that can sit atop inftarg, such as HPUX
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thread support. */
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#ifndef CHILD_WAIT
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/*##*/
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/* Enable HACK for ttrace work. In
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* infttrace.c/require_notification_of_events,
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* this is set to 0 so that the loop in child_wait
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* won't loop.
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*/
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int not_same_real_pid = 1;
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/*##*/
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/* Wait for child to do something. Return pid of child, or -1 in case
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of error; store status through argument pointer OURSTATUS. */
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static int
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child_wait (pid, ourstatus)
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int pid;
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struct target_waitstatus *ourstatus;
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{
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int save_errno;
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int status;
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char * execd_pathname;
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int exit_status;
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int related_pid;
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int syscall_id;
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enum target_waitkind kind;
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do {
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set_sigint_trap(); /* Causes SIGINT to be passed on to the
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attached process. */
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set_sigio_trap ();
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pid = proc_wait (inferior_pid, &status);
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save_errno = errno;
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clear_sigio_trap ();
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clear_sigint_trap();
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if (pid == -1)
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{
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if (save_errno == EINTR)
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continue;
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fprintf_unfiltered (gdb_stderr, "Child process unexpectedly missing: %s.\n",
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safe_strerror (save_errno));
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/* Claim it exited with unknown signal. */
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ourstatus->kind = TARGET_WAITKIND_SIGNALLED;
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ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN;
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return -1;
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}
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/* Did it exit?
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*/
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if (target_has_exited (pid, status, &exit_status))
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{
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/* ??rehrauer: For now, ignore this. */
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continue;
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}
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if (!target_thread_alive (pid))
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{
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ourstatus->kind = TARGET_WAITKIND_SPURIOUS;
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return pid;
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}
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if (target_has_forked (pid, &related_pid)
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&& (pid == inferior_pid) || (related_pid == inferior_pid))
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{
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ourstatus->kind = TARGET_WAITKIND_FORKED;
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ourstatus->value.related_pid = related_pid;
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return pid;
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}
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if (target_has_vforked (pid, &related_pid)
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&& (pid == inferior_pid) || (related_pid == inferior_pid))
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{
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ourstatus->kind = TARGET_WAITKIND_VFORKED;
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ourstatus->value.related_pid = related_pid;
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return pid;
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}
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if (target_has_execd (pid, &execd_pathname))
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{
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/* Are we ignoring initial exec events? (This is likely because
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we're in the process of starting up the inferior, and another
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(older) mechanism handles those.) If so, we'll report this
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as a regular stop, not an exec.
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*/
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if (inferior_ignoring_startup_exec_events)
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{
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inferior_ignoring_startup_exec_events--;
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}
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else
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{
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ourstatus->kind = TARGET_WAITKIND_EXECD;
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ourstatus->value.execd_pathname = execd_pathname;
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return pid;
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}
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}
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/* All we must do with these is communicate their occurrence
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to wait_for_inferior...
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*/
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if (target_has_syscall_event (pid, &kind, &syscall_id))
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{
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ourstatus->kind = kind;
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ourstatus->value.syscall_id = syscall_id;
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return pid;
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}
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/*## } while (pid != inferior_pid); ##*/ /* Some other child died or stopped */
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/* hack for thread testing */
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} while( (pid != inferior_pid) && not_same_real_pid );
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/*##*/
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store_waitstatus (ourstatus, status);
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return pid;
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}
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#endif /* CHILD_WAIT */
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#if !defined(CHILD_POST_WAIT)
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void
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child_post_wait (pid, wait_status)
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int pid;
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int wait_status;
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{
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/* This version of Unix doesn't require a meaningful "post wait"
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operation.
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*/
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}
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#endif
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#ifndef CHILD_THREAD_ALIVE
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/* Check to see if the given thread is alive.
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FIXME: Is kill() ever the right way to do this? I doubt it, but
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for now we're going to try and be compatable with the old thread
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code. */
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int
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child_thread_alive (pid)
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int pid;
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{
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return (kill (pid, 0) != -1);
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}
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#endif
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static void
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child_attach_to_process (args, from_tty, after_fork)
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char * args;
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int from_tty;
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int after_fork;
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{
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if (!args)
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error_no_arg ("process-id to attach");
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#ifndef ATTACH_DETACH
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error ("Can't attach to a process on this machine.");
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#else
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{
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char *exec_file;
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int pid;
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struct target_waitstatus *wstatus;
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char * dummy;
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dummy = args;
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pid = strtol (args, &dummy, 0);
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/* Some targets don't set errno on errors, grrr! */
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if ((pid == 0) && (args == dummy))
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error ("Illegal process-id: %s\n", args);
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if (pid == getpid()) /* Trying to masturbate? */
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error ("I refuse to debug myself!");
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if (from_tty)
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{
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exec_file = (char *) get_exec_file (0);
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if (after_fork)
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printf_unfiltered ("Attaching after fork to %s\n",
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target_pid_to_str (pid));
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else if (exec_file)
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printf_unfiltered ("Attaching to program: %s, %s\n", exec_file,
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target_pid_to_str (pid));
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else
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printf_unfiltered ("Attaching to %s\n", target_pid_to_str (pid));
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gdb_flush (gdb_stdout);
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}
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if (!after_fork)
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attach (pid);
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else
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REQUIRE_ATTACH (pid);
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inferior_pid = pid;
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push_target (&child_ops);
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}
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#endif /* ATTACH_DETACH */
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}
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/* Attach to process PID, then initialize for debugging it. */
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static void
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child_attach (args, from_tty)
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char *args;
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int from_tty;
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{
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child_attach_to_process (args, from_tty, 0);
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}
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#if !defined(CHILD_POST_ATTACH)
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static void
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child_post_attach (pid)
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int pid;
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{
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/* This version of Unix doesn't require a meaningful "post attach"
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operation by a debugger.
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*/
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}
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#endif
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static void
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child_require_attach (args, from_tty)
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char *args;
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int from_tty;
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{
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child_attach_to_process (args, from_tty, 1);
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}
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static void
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child_detach_from_process (pid, args, from_tty, after_fork)
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int pid;
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char * args;
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int from_tty;
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int after_fork;
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{
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||
#ifdef ATTACH_DETACH
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{
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int siggnal = 0;
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if (from_tty)
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{
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char *exec_file = get_exec_file (0);
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if (exec_file == 0)
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exec_file = "";
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if (after_fork)
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printf_unfiltered ("Detaching after fork from %s\n",
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target_pid_to_str (pid));
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else
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printf_unfiltered ("Detaching from program: %s, %s\n", exec_file,
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target_pid_to_str (pid));
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gdb_flush (gdb_stdout);
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||
}
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if (args)
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siggnal = atoi (args);
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||
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if (!after_fork)
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detach (siggnal);
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else
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REQUIRE_DETACH (pid, siggnal);
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}
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||
#else
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error ("This version of Unix does not support detaching a process.");
|
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#endif
|
||
}
|
||
|
||
/* Take a program previously attached to and detaches it.
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||
The program resumes execution and will no longer stop
|
||
on signals, etc. We'd better not have left any breakpoints
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in the program or it'll die when it hits one. For this
|
||
to work, it may be necessary for the process to have been
|
||
previously attached. It *might* work if the program was
|
||
started via the normal ptrace (PTRACE_TRACEME). */
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||
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||
static void
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||
child_detach (args, from_tty)
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char *args;
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||
int from_tty;
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||
{
|
||
child_detach_from_process (inferior_pid, args, from_tty, 0);
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inferior_pid = 0;
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||
unpush_target (&child_ops);
|
||
}
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||
|
||
static void
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||
child_require_detach (pid, args, from_tty)
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||
int pid;
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||
char * args;
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||
int from_tty;
|
||
{
|
||
child_detach_from_process (pid, args, from_tty, 1);
|
||
}
|
||
|
||
|
||
/* Get ready to modify the registers array. On machines which store
|
||
individual registers, this doesn't need to do anything. On machines
|
||
which store all the registers in one fell swoop, this makes sure
|
||
that registers contains all the registers from the program being
|
||
debugged. */
|
||
|
||
static void
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||
child_prepare_to_store ()
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||
{
|
||
#ifdef CHILD_PREPARE_TO_STORE
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||
CHILD_PREPARE_TO_STORE ();
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||
#endif
|
||
}
|
||
|
||
/* Print status information about what we're accessing. */
|
||
|
||
static void
|
||
child_files_info (ignore)
|
||
struct target_ops *ignore;
|
||
{
|
||
printf_unfiltered ("\tUsing the running image of %s %s.\n",
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attach_flag? "attached": "child", target_pid_to_str (inferior_pid));
|
||
}
|
||
|
||
/* ARGSUSED */
|
||
static void
|
||
child_open (arg, from_tty)
|
||
char *arg;
|
||
int from_tty;
|
||
{
|
||
error ("Use the \"run\" command to start a Unix child process.");
|
||
}
|
||
|
||
/* Stub function which causes the inferior that runs it, to be ptrace-able
|
||
by its parent process. */
|
||
|
||
static void
|
||
ptrace_me ()
|
||
{
|
||
/* "Trace me, Dr. Memory!" */
|
||
call_ptrace (0, 0, (PTRACE_ARG3_TYPE) 0, 0);
|
||
}
|
||
|
||
/* Stub function which causes the GDB that runs it, to start ptrace-ing
|
||
the child process. */
|
||
|
||
static void
|
||
ptrace_him (pid)
|
||
int pid;
|
||
{
|
||
push_target (&child_ops);
|
||
|
||
/* On some targets, there must be some explicit synchronization
|
||
between the parent and child processes after the debugger
|
||
forks, and before the child execs the debuggee program. This
|
||
call basically gives permission for the child to exec.
|
||
*/
|
||
|
||
target_acknowledge_created_inferior (pid);
|
||
|
||
/* START_INFERIOR_TRAPS_EXPECTED is defined in inferior.h,
|
||
* and will be 1 or 2 depending on whether we're starting
|
||
* without or with a shell.
|
||
*/
|
||
startup_inferior (START_INFERIOR_TRAPS_EXPECTED);
|
||
|
||
/* On some targets, there must be some explicit actions taken after
|
||
the inferior has been started up.
|
||
*/
|
||
target_post_startup_inferior (pid);
|
||
}
|
||
|
||
/* Start an inferior Unix child process and sets inferior_pid to its pid.
|
||
EXEC_FILE is the file to run.
|
||
ALLARGS is a string containing the arguments to the program.
|
||
ENV is the environment vector to pass. Errors reported with error(). */
|
||
|
||
static void
|
||
child_create_inferior (exec_file, allargs, env)
|
||
char *exec_file;
|
||
char *allargs;
|
||
char **env;
|
||
{
|
||
|
||
#ifdef HPUXHPPA
|
||
char *tryname;
|
||
char *shell_file;
|
||
char *p;
|
||
char *p1;
|
||
char *path = getenv ("PATH");
|
||
int len;
|
||
struct stat statbuf;
|
||
|
||
/* On HP-UX, we have a possible bad interaction between
|
||
* the start-up-with-shell code and our catch-fork/catch-exec
|
||
* logic. To avoid the bad interaction, we start up with the
|
||
* C shell ("csh") and pass it the "-f" flag (fast start-up,
|
||
* don't run .cshrc code).
|
||
* See further comments in inferior.h toward the bottom
|
||
* (STARTUP_WITH_SHELL flag) and in fork-child.c
|
||
*/
|
||
|
||
/* Rather than passing in a hard-wired path like "/bin/csh",
|
||
* we look down the PATH to find csh. I took this code from
|
||
* procfs.c, which is the file in the Sun-specific part of GDB
|
||
* analogous to inftarg.c. See procfs.c for more detailed
|
||
* comments. - RT
|
||
*/
|
||
shell_file = "csh";
|
||
if (path == NULL)
|
||
path = "/bin:/usr/bin";
|
||
tryname = alloca (strlen (path) + strlen (shell_file) + 2);
|
||
for (p = path; p != NULL; p = p1 ? p1 + 1: NULL)
|
||
{
|
||
p1 = strchr (p, ':');
|
||
if (p1 != NULL)
|
||
len = p1 - p;
|
||
else
|
||
len = strlen (p);
|
||
strncpy (tryname, p, len);
|
||
tryname[len] = '\0';
|
||
strcat (tryname, "/");
|
||
strcat (tryname, shell_file);
|
||
if (access (tryname, X_OK) < 0)
|
||
continue;
|
||
if (stat (tryname, &statbuf) < 0)
|
||
continue;
|
||
if (!S_ISREG (statbuf.st_mode))
|
||
/* We certainly need to reject directories. I'm not quite
|
||
as sure about FIFOs, sockets, etc., but I kind of doubt
|
||
that people want to exec() these things. */
|
||
continue;
|
||
break;
|
||
}
|
||
if (p == NULL)
|
||
/* Not found. I replaced the error() which existed in procfs.c
|
||
* with simply passing in NULL and hoping fork_inferior()
|
||
* can deal with it. - RT
|
||
*/
|
||
/* error ("Can't find shell %s in PATH", shell_file); */
|
||
shell_file = NULL;
|
||
else
|
||
shell_file = tryname;
|
||
|
||
fork_inferior (exec_file, allargs, env, ptrace_me, ptrace_him, pre_fork_inferior, shell_file);
|
||
#else
|
||
fork_inferior (exec_file, allargs, env, ptrace_me, ptrace_him, NULL, NULL);
|
||
#endif
|
||
/* We are at the first instruction we care about. */
|
||
/* Pedal to the metal... */
|
||
proceed ((CORE_ADDR) -1, TARGET_SIGNAL_0, 0);
|
||
}
|
||
|
||
#if !defined(CHILD_POST_STARTUP_INFERIOR)
|
||
void
|
||
child_post_startup_inferior (pid)
|
||
int pid;
|
||
{
|
||
/* This version of Unix doesn't require a meaningful "post startup inferior"
|
||
operation by a debugger.
|
||
*/
|
||
}
|
||
#endif
|
||
|
||
#if !defined(CHILD_ACKNOWLEDGE_CREATED_INFERIOR)
|
||
void
|
||
child_acknowledge_created_inferior (pid)
|
||
int pid;
|
||
{
|
||
/* This version of Unix doesn't require a meaningful "acknowledge created inferior"
|
||
operation by a debugger.
|
||
*/
|
||
}
|
||
#endif
|
||
|
||
|
||
void
|
||
child_clone_and_follow_inferior (child_pid, followed_child)
|
||
int child_pid;
|
||
int *followed_child;
|
||
{
|
||
clone_and_follow_inferior (child_pid, followed_child);
|
||
|
||
/* Don't resume CHILD_PID; it's stopped where it ought to be, until
|
||
the decision gets made elsewhere how to continue it.
|
||
*/
|
||
}
|
||
|
||
|
||
#if !defined(CHILD_POST_FOLLOW_INFERIOR_BY_CLONE)
|
||
void
|
||
child_post_follow_inferior_by_clone ()
|
||
{
|
||
/* This version of Unix doesn't require a meaningful "post follow inferior"
|
||
operation by a clone debugger.
|
||
*/
|
||
}
|
||
#endif
|
||
|
||
|
||
#if !defined(CHILD_INSERT_FORK_CATCHPOINT)
|
||
int
|
||
child_insert_fork_catchpoint (pid)
|
||
int pid;
|
||
{
|
||
/* This version of Unix doesn't support notification of fork events.
|
||
*/
|
||
}
|
||
#endif
|
||
|
||
|
||
#if !defined(CHILD_REMOVE_FORK_CATCHPOINT)
|
||
int
|
||
child_remove_fork_catchpoint (pid)
|
||
int pid;
|
||
{
|
||
/* This version of Unix doesn't support notification of fork events.
|
||
*/
|
||
}
|
||
#endif
|
||
|
||
|
||
#if !defined(CHILD_INSERT_VFORK_CATCHPOINT)
|
||
int
|
||
child_insert_vfork_catchpoint (pid)
|
||
int pid;
|
||
{
|
||
/* This version of Unix doesn't support notification of vfork events.
|
||
*/
|
||
}
|
||
#endif
|
||
|
||
|
||
#if !defined(CHILD_REMOVE_VFORK_CATCHPOINT)
|
||
int
|
||
child_remove_vfork_catchpoint (pid)
|
||
int pid;
|
||
{
|
||
/* This version of Unix doesn't support notification of vfork events.
|
||
*/
|
||
}
|
||
#endif
|
||
|
||
|
||
#if !defined(CHILD_HAS_FORKED)
|
||
int
|
||
child_has_forked (pid, child_pid)
|
||
int pid;
|
||
int * child_pid;
|
||
{
|
||
/* This version of Unix doesn't support notification of fork events.
|
||
*/
|
||
return 0;
|
||
}
|
||
#endif
|
||
|
||
|
||
#if !defined(CHILD_HAS_VFORKED)
|
||
int
|
||
child_has_vforked (pid, child_pid)
|
||
int pid;
|
||
int * child_pid;
|
||
{
|
||
/* This version of Unix doesn't support notification of vfork events.
|
||
*/
|
||
return 0;
|
||
}
|
||
#endif
|
||
|
||
|
||
#if !defined(CHILD_CAN_FOLLOW_VFORK_PRIOR_TO_EXEC)
|
||
int
|
||
child_can_follow_vfork_prior_to_exec ()
|
||
{
|
||
/* This version of Unix doesn't support notification of vfork events.
|
||
However, if it did, it probably wouldn't allow vforks to be followed
|
||
before the following exec.
|
||
*/
|
||
return 0;
|
||
}
|
||
#endif
|
||
|
||
|
||
#if !defined(CHILD_POST_FOLLOW_VFORK)
|
||
void
|
||
child_post_follow_vfork (parent_pid, followed_parent, child_pid, followed_child)
|
||
int parent_pid;
|
||
int followed_parent;
|
||
int child_pid;
|
||
int followed_child;
|
||
{
|
||
/* This version of Unix doesn't require a meaningful "post follow vfork"
|
||
operation by a clone debugger.
|
||
*/
|
||
}
|
||
#endif
|
||
|
||
#if !defined(CHILD_INSERT_EXEC_CATCHPOINT)
|
||
int
|
||
child_insert_exec_catchpoint (pid)
|
||
int pid;
|
||
{
|
||
/* This version of Unix doesn't support notification of exec events.
|
||
*/
|
||
}
|
||
#endif
|
||
|
||
|
||
#if !defined(CHILD_REMOVE_EXEC_CATCHPOINT)
|
||
int
|
||
child_remove_exec_catchpoint (pid)
|
||
int pid;
|
||
{
|
||
/* This version of Unix doesn't support notification of exec events.
|
||
*/
|
||
}
|
||
#endif
|
||
|
||
|
||
#if !defined(CHILD_HAS_EXECD)
|
||
int
|
||
child_has_execd (pid, execd_pathname)
|
||
int pid;
|
||
char ** execd_pathname;
|
||
{
|
||
/* This version of Unix doesn't support notification of exec events.
|
||
*/
|
||
return 0;
|
||
}
|
||
#endif
|
||
|
||
|
||
#if !defined(CHILD_REPORTED_EXEC_EVENTS_PER_EXEC_CALL)
|
||
int
|
||
child_reported_exec_events_per_exec_call ()
|
||
{
|
||
/* This version of Unix doesn't support notification of exec events.
|
||
*/
|
||
return 1;
|
||
}
|
||
#endif
|
||
|
||
|
||
#if !defined(CHILD_HAS_SYSCALL_EVENT)
|
||
int
|
||
child_has_syscall_event (pid, kind, syscall_id)
|
||
int pid;
|
||
enum target_waitkind * kind;
|
||
int * syscall_id;
|
||
{
|
||
/* This version of Unix doesn't support notification of syscall events.
|
||
*/
|
||
return 0;
|
||
}
|
||
#endif
|
||
|
||
|
||
#if !defined(CHILD_HAS_EXITED)
|
||
int
|
||
child_has_exited (pid, wait_status, exit_status)
|
||
int pid;
|
||
int wait_status;
|
||
int * exit_status;
|
||
{
|
||
if (WIFEXITED (wait_status))
|
||
{
|
||
*exit_status = WEXITSTATUS (wait_status);
|
||
return 1;
|
||
}
|
||
|
||
if (WIFSIGNALED (wait_status))
|
||
{
|
||
*exit_status = 0; /* ?? Don't know what else to say here. */
|
||
return 1;
|
||
}
|
||
|
||
/* ?? Do we really need to consult the event state, too? Assume the
|
||
wait_state alone suffices.
|
||
*/
|
||
return 0;
|
||
}
|
||
#endif
|
||
|
||
|
||
static void
|
||
child_mourn_inferior ()
|
||
{
|
||
/* FIXME: Should be in a header file */
|
||
extern void proc_remove_foreign PARAMS ((int));
|
||
|
||
unpush_target (&child_ops);
|
||
proc_remove_foreign (inferior_pid);
|
||
generic_mourn_inferior ();
|
||
}
|
||
|
||
static int
|
||
child_can_run ()
|
||
{
|
||
/* This variable is controlled by modules that sit atop inftarg that may layer
|
||
their own process structure atop that provided here. hpux-thread.c does
|
||
this because of the Hpux user-mode level thread model. */
|
||
|
||
return !child_suppress_run;
|
||
}
|
||
|
||
/* Send a SIGINT to the process group. This acts just like the user typed a
|
||
^C on the controlling terminal.
|
||
|
||
XXX - This may not be correct for all systems. Some may want to use
|
||
killpg() instead of kill (-pgrp). */
|
||
|
||
static void
|
||
child_stop ()
|
||
{
|
||
extern pid_t inferior_process_group;
|
||
|
||
kill (-inferior_process_group, SIGINT);
|
||
}
|
||
|
||
#if !defined(CHILD_ENABLE_EXCEPTION_CALLBACK)
|
||
struct symtab_and_line *
|
||
child_enable_exception_callback (kind, enable)
|
||
enum exception_event_kind kind;
|
||
int enable;
|
||
{
|
||
return (struct symtab_and_line *) NULL;
|
||
}
|
||
#endif
|
||
|
||
#if !defined(CHILD_GET_CURRENT_EXCEPTION_EVENT)
|
||
struct exception_event_record *
|
||
child_get_current_exception_event ()
|
||
{
|
||
return (struct exception_event_record *) NULL;
|
||
}
|
||
#endif
|
||
|
||
|
||
#if !defined(CHILD_PID_TO_EXEC_FILE)
|
||
char *
|
||
child_pid_to_exec_file (pid)
|
||
int pid;
|
||
{
|
||
/* This version of Unix doesn't support translation of a process ID
|
||
to the filename of the executable file.
|
||
*/
|
||
return NULL;
|
||
}
|
||
#endif
|
||
|
||
char *
|
||
child_core_file_to_sym_file (core)
|
||
char * core;
|
||
{
|
||
/* The target stratum for a running executable need not support
|
||
this operation.
|
||
*/
|
||
return NULL;
|
||
}
|
||
|
||
|
||
|
||
struct target_ops child_ops = {
|
||
"child", /* to_shortname */
|
||
"Unix child process", /* to_longname */
|
||
"Unix child process (started by the \"run\" command).", /* to_doc */
|
||
child_open, /* to_open */
|
||
0, /* to_close */
|
||
child_attach, /* to_attach */
|
||
child_post_attach, /* to_post_attach */
|
||
child_require_attach, /* to_require_attach */
|
||
child_detach, /* to_detach */
|
||
child_require_detach, /* to_require_detach */
|
||
child_resume, /* to_resume */
|
||
child_wait, /* to_wait */
|
||
child_post_wait, /* to_post_wait */
|
||
fetch_inferior_registers, /* to_fetch_registers */
|
||
store_inferior_registers, /* to_store_registers */
|
||
child_prepare_to_store, /* to_prepare_to_store */
|
||
child_xfer_memory, /* to_xfer_memory */
|
||
child_files_info, /* to_files_info */
|
||
memory_insert_breakpoint, /* to_insert_breakpoint */
|
||
memory_remove_breakpoint, /* to_remove_breakpoint */
|
||
terminal_init_inferior, /* to_terminal_init */
|
||
terminal_inferior, /* to_terminal_inferior */
|
||
terminal_ours_for_output, /* to_terminal_ours_for_output */
|
||
terminal_ours, /* to_terminal_ours */
|
||
child_terminal_info, /* to_terminal_info */
|
||
kill_inferior, /* to_kill */
|
||
0, /* to_load */
|
||
0, /* to_lookup_symbol */
|
||
child_create_inferior, /* to_create_inferior */
|
||
child_post_startup_inferior, /* to_post_startup_inferior */
|
||
child_acknowledge_created_inferior, /* to_acknowledge_created_inferior */
|
||
child_clone_and_follow_inferior, /* to_clone_and_follow_inferior */
|
||
child_post_follow_inferior_by_clone, /* to_post_follow_inferior_by_clone */
|
||
child_insert_fork_catchpoint, /* to_insert_fork_catchpoint */
|
||
child_remove_fork_catchpoint, /* to_remove_fork_catchpoint */
|
||
child_insert_vfork_catchpoint, /* to_insert_vfork_catchpoint */
|
||
child_remove_vfork_catchpoint, /* to_remove_vfork_catchpoint */
|
||
child_has_forked, /* to_has_forked */
|
||
child_has_vforked, /* to_has_vforked */
|
||
child_can_follow_vfork_prior_to_exec, /* to_can_follow_vfork_prior_to_exec */
|
||
child_post_follow_vfork, /* to_post_follow_vfork */
|
||
child_insert_exec_catchpoint, /* to_insert_exec_catchpoint */
|
||
child_remove_exec_catchpoint, /* to_remove_exec_catchpoint */
|
||
child_has_execd, /* to_has_execd */
|
||
child_reported_exec_events_per_exec_call, /* to_reported_exec_events_per_exec_call */
|
||
child_has_syscall_event, /* to_has_syscall_event */
|
||
child_has_exited, /* to_has_exited */
|
||
child_mourn_inferior, /* to_mourn_inferior */
|
||
child_can_run, /* to_can_run */
|
||
0, /* to_notice_signals */
|
||
child_thread_alive, /* to_thread_alive */
|
||
child_stop, /* to_stop */
|
||
child_enable_exception_callback, /* to_enable_exception_callback */
|
||
child_get_current_exception_event, /* to_get_current_exception_event */
|
||
child_pid_to_exec_file, /* to_pid_to_exec_file */
|
||
child_core_file_to_sym_file, /* to_core_file_to_sym_file */
|
||
process_stratum, /* to_stratum */
|
||
0, /* to_next */
|
||
1, /* to_has_all_memory */
|
||
1, /* to_has_memory */
|
||
1, /* to_has_stack */
|
||
1, /* to_has_registers */
|
||
1, /* to_has_execution */
|
||
0, /* to_sections */
|
||
0, /* to_sections_end */
|
||
OPS_MAGIC /* to_magic */
|
||
};
|
||
|
||
void
|
||
_initialize_inftarg ()
|
||
{
|
||
#ifdef HAVE_OPTIONAL_PROC_FS
|
||
char procname[32];
|
||
int fd;
|
||
|
||
/* If we have an optional /proc filesystem (e.g. under OSF/1),
|
||
don't add ptrace support if we can access the running GDB via /proc. */
|
||
#ifndef PROC_NAME_FMT
|
||
#define PROC_NAME_FMT "/proc/%05d"
|
||
#endif
|
||
sprintf (procname, PROC_NAME_FMT, getpid ());
|
||
if ((fd = open (procname, O_RDONLY)) >= 0)
|
||
{
|
||
close (fd);
|
||
return;
|
||
}
|
||
#endif
|
||
|
||
add_target (&child_ops);
|
||
}
|