-/* Subroutines for handling an "inferior" (child) process as a target
- for debugging, in GDB.
- Copyright 1990, 1991 Free Software Foundation, Inc.
+/* Target-vector operations for controlling Unix child processes, for GDB.
+
+ Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999,
+ 2000, 2002, 2003, 2004 Free Software Foundation, Inc.
+
Contributed by Cygnus Support.
-This file is part of GDB.
+ ## Contains temporary hacks..
-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 file is part of GDB.
-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.
+ 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.
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+ 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
+ Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
#include "defs.h"
-#include "frame.h" /* required by inferior.h */
+#include "frame.h" /* required by inferior.h */
#include "inferior.h"
#include "target.h"
-#include "wait.h"
#include "gdbcore.h"
-#include "ieee-float.h" /* Required by REGISTER_CONVERT_TO_XXX */
+#include "command.h"
+#include "gdb_stat.h"
+#include <signal.h>
+#include <sys/types.h>
+#include <fcntl.h>
+#include "observer.h"
+#include "gdb_wait.h"
+#include "inflow.h"
-static void
-child_prepare_to_store PARAMS ((void));
+extern struct symtab_and_line *child_enable_exception_callback (enum
+ exception_event_kind,
+ int);
-static int
-child_wait PARAMS ((int *));
+extern struct exception_event_record
+ *child_get_current_exception_event (void);
-static void
-child_open PARAMS ((char *, int));
+extern void _initialize_inftarg (void);
-static void
-child_files_info PARAMS ((struct target_ops *));
+static void child_prepare_to_store (void);
-static void
-child_detach PARAMS ((char *, int));
+#ifndef CHILD_WAIT
+static ptid_t child_wait (ptid_t, struct target_waitstatus *);
+#endif /* CHILD_WAIT */
+
+static void child_open (char *, int);
+
+static void child_files_info (struct target_ops *);
+
+static void child_detach (char *, int);
+
+static void child_attach (char *, int);
+
+#if !defined(CHILD_POST_ATTACH)
+extern void child_post_attach (int);
+#endif
+
+static void ptrace_me (void);
+
+static void ptrace_him (int);
+
+static void child_create_inferior (char *, char *, char **, int);
-/* Forward declaration */
-extern struct target_ops child_ops;
+static void child_mourn_inferior (void);
+
+static int child_can_run (void);
+
+static void child_stop (void);
+
+#ifndef CHILD_THREAD_ALIVE
+int child_thread_alive (ptid_t);
+#endif
+
+static void init_child_ops (void);
+
+extern char **environ;
+
+int child_suppress_run = 0; /* Non-zero if inftarg should pretend not to
+ be a runnable target. Used by targets
+ that can sit atop inftarg, such as HPUX
+ thread support. */
+
+#ifndef CHILD_WAIT
/* Wait for child to do something. Return pid of child, or -1 in case
- of error; store status through argument pointer STATUS. */
+ of error; store status through argument pointer OURSTATUS. */
-static int
-child_wait (status)
- int *status;
+static ptid_t
+child_wait (ptid_t ptid, struct target_waitstatus *ourstatus)
{
+ int save_errno;
+ int status;
+ char *execd_pathname = NULL;
+ int exit_status;
+ int related_pid;
+ int syscall_id;
+ enum target_waitkind kind;
int pid;
- do {
-#ifdef USE_PROC_FS
- pid = proc_wait (status);
-#else
- pid = wait (status);
-#endif
- if (pid == -1) /* No more children to wait for */
- {
- fprintf (stderr, "Child process unexpectedly missing.\n");
- *status = 42; /* Claim it exited with signal 42 */
- return -1;
- }
- } while (pid != inferior_pid); /* Some other child died or stopped */
- return pid;
-}
-
-
-/*
- * child_detach()
- * takes a program previously attached to and detaches it.
- * The program resumes execution and will no longer stop
- * on signals, etc. We better not have left any breakpoints
- * 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).
- */
+ do
+ {
+ set_sigint_trap (); /* Causes SIGINT to be passed on to the
+ attached process. */
+ set_sigio_trap ();
+
+ pid = wait (&status);
+
+ save_errno = errno;
+
+ clear_sigio_trap ();
+
+ clear_sigint_trap ();
+
+ if (pid == -1)
+ {
+ if (save_errno == EINTR)
+ continue;
+
+ fprintf_unfiltered (gdb_stderr, "Child process unexpectedly missing: %s.\n",
+ safe_strerror (save_errno));
+
+ /* Claim it exited with unknown signal. */
+ ourstatus->kind = TARGET_WAITKIND_SIGNALLED;
+ ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN;
+ return pid_to_ptid (-1);
+ }
+
+ /* Did it exit?
+ */
+ if (target_has_exited (pid, status, &exit_status))
+ {
+ /* ??rehrauer: For now, ignore this. */
+ continue;
+ }
+
+ if (!target_thread_alive (pid_to_ptid (pid)))
+ {
+ ourstatus->kind = TARGET_WAITKIND_SPURIOUS;
+ return pid_to_ptid (pid);
+ }
+ } while (pid != PIDGET (inferior_ptid)); /* Some other child died or stopped */
+
+ store_waitstatus (ourstatus, status);
+ return pid_to_ptid (pid);
+}
+#endif /* CHILD_WAIT */
+
+#ifndef CHILD_THREAD_ALIVE
+
+/* Check to see if the given thread is alive.
+
+ FIXME: Is kill() ever the right way to do this? I doubt it, but
+ for now we're going to try and be compatable with the old thread
+ code. */
+int
+child_thread_alive (ptid_t ptid)
+{
+ pid_t pid = PIDGET (ptid);
+
+ return (kill (pid, 0) != -1);
+}
+
+#endif
+
+/* Attach to process PID, then initialize for debugging it. */
static void
-child_detach (args, from_tty)
- char *args;
- int from_tty;
+child_attach (char *args, int from_tty)
{
- int siggnal = 0;
+ char *exec_file;
+ int pid;
+ char *dummy;
+
+ if (!args)
+ error_no_arg (_("process-id to attach"));
+
+ dummy = args;
+ pid = strtol (args, &dummy, 0);
+ /* Some targets don't set errno on errors, grrr! */
+ if ((pid == 0) && (args == dummy))
+ error (_("Illegal process-id: %s."), args);
+
+ if (pid == getpid ()) /* Trying to masturbate? */
+ error (_("I refuse to debug myself!"));
+
+ if (from_tty)
+ {
+ exec_file = (char *) get_exec_file (0);
+
+ if (exec_file)
+ printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file,
+ target_pid_to_str (pid_to_ptid (pid)));
+ else
+ printf_unfiltered (_("Attaching to %s\n"),
+ target_pid_to_str (pid_to_ptid (pid)));
+
+ gdb_flush (gdb_stdout);
+ }
+
+ attach (pid);
+
+ inferior_ptid = pid_to_ptid (pid);
+ push_target (&deprecated_child_ops);
+
+ /* Do this first, before anything has had a chance to query the
+ inferior's symbol table or similar. */
+ observer_notify_inferior_created (¤t_target, from_tty);
+}
+
+#if !defined(CHILD_POST_ATTACH)
+void
+child_post_attach (int pid)
+{
+ /* This version of Unix doesn't require a meaningful "post attach"
+ operation by a debugger. */
+}
+#endif
-#ifdef ATTACH_DETACH
+/* Take a program previously attached to and detaches it.
+ The program resumes execution and will no longer stop
+ on signals, etc. We'd better not have left any breakpoints
+ 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). */
+
+static void
+child_detach (char *args, int from_tty)
+{
+ int siggnal = 0;
+ int pid = PIDGET (inferior_ptid);
+
if (from_tty)
{
char *exec_file = get_exec_file (0);
if (exec_file == 0)
exec_file = "";
- printf ("Detaching program: %s pid %d\n",
- exec_file, inferior_pid);
- fflush (stdout);
+ printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file,
+ target_pid_to_str (pid_to_ptid (pid)));
+ gdb_flush (gdb_stdout);
}
if (args)
siggnal = atoi (args);
detach (siggnal);
- inferior_pid = 0;
- unpush_target (&child_ops); /* Pop out of handling an inferior */
-#else
- error ("This version of Unix does not support detaching a process.");
-#endif
+
+ inferior_ptid = null_ptid;
+ unpush_target (&deprecated_child_ops);
}
/* Get ready to modify the registers array. On machines which store
debugged. */
static void
-child_prepare_to_store ()
+child_prepare_to_store (void)
{
#ifdef CHILD_PREPARE_TO_STORE
CHILD_PREPARE_TO_STORE ();
/* Print status information about what we're accessing. */
static void
-child_files_info (ignore)
- struct target_ops *ignore;
+child_files_info (struct target_ops *ignore)
+{
+ printf_unfiltered (_("\tUsing the running image of %s %s.\n"),
+ attach_flag ? "attached" : "child", target_pid_to_str (inferior_ptid));
+}
+
+static void
+child_open (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 (void)
{
- printf ("\tUsing the running image of %s process %d.\n",
- attach_flag? "attached": "child", inferior_pid);
+ /* "Trace me, Dr. Memory!" */
+ call_ptrace (0, 0, (PTRACE_TYPE_ARG3) 0, 0);
}
-/* ARGSUSED */
+/* Stub function which causes the GDB that runs it, to start ptrace-ing
+ the child process. */
+
+static void
+ptrace_him (int pid)
+{
+ push_target (&deprecated_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_to_ptid (pid));
+}
+
+/* Start an inferior Unix child process and sets inferior_ptid 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_open (arg, from_tty)
- char *arg;
- int from_tty;
-{
- error ("Use the \"run\" command to start a Unix child process.");
-}
-
-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_detach, /* to_detach */
- child_resume, /* to_resume */
- child_wait, /* to_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_mourn_inferior, /* to_mourn_inferior */
- 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, /* sections */
- 0, /* sections_end */
- OPS_MAGIC /* to_magic */
-};
+child_create_inferior (char *exec_file, char *allargs, char **env,
+ int from_tty)
+{
+ fork_inferior (exec_file, allargs, env, ptrace_me, ptrace_him, NULL, NULL);
+
+ /* We are at the first instruction we care about. */
+ observer_notify_inferior_created (¤t_target, from_tty);
+ /* Pedal to the metal... */
+ proceed ((CORE_ADDR) -1, TARGET_SIGNAL_0, 0);
+}
+#if !defined(CHILD_POST_STARTUP_INFERIOR)
void
-_initialize_inftarg ()
+child_post_startup_inferior (ptid_t ptid)
{
- add_target (&child_ops);
+ /* 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 (int pid)
+{
+ /* This version of Unix doesn't require a meaningful "acknowledge created inferior"
+ operation by a debugger.
+ */
+}
+#endif
+
+
+#if !defined(CHILD_INSERT_FORK_CATCHPOINT)
+void
+child_insert_fork_catchpoint (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 (int pid)
+{
+ /* This version of Unix doesn't support notification of fork events. */
+ return 0;
+}
+#endif
+
+#if !defined(CHILD_INSERT_VFORK_CATCHPOINT)
+void
+child_insert_vfork_catchpoint (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 (int pid)
+{
+ /* This version of Unix doesn't support notification of vfork events. */
+ return 0;
+}
+#endif
+
+#if !defined(CHILD_FOLLOW_FORK)
+int
+child_follow_fork (int follow_child)
+{
+ /* This version of Unix doesn't support following fork or vfork events. */
+ return 0;
+}
+#endif
+
+#if !defined(CHILD_INSERT_EXEC_CATCHPOINT)
+void
+child_insert_exec_catchpoint (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 (int pid)
+{
+ /* 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 (void)
+{
+ /* This version of Unix doesn't support notification of exec events.
+ */
+ return 1;
+}
+#endif
+
+#if !defined(CHILD_HAS_EXITED)
+int
+child_has_exited (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 (void)
+{
+ unpush_target (&deprecated_child_ops);
+ generic_mourn_inferior ();
+}
+
+static int
+child_can_run (void)
+{
+ /* 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 (void)
+{
+ kill (-inferior_process_group, SIGINT);
+}
+
+#if !defined(CHILD_ENABLE_EXCEPTION_CALLBACK)
+struct symtab_and_line *
+child_enable_exception_callback (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 (void)
+{
+ return (struct exception_event_record *) NULL;
+}
+#endif
+
+
+#if !defined(CHILD_PID_TO_EXEC_FILE)
+char *
+child_pid_to_exec_file (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 (char *core)
+{
+ /* The target stratum for a running executable need not support
+ this operation.
+ */
+ return NULL;
+}
+
+/* Perform a partial transfer to/from the specified object. For
+ memory transfers, fall back to the old memory xfer functions. */
+
+static LONGEST
+child_xfer_partial (struct target_ops *ops, enum target_object object,
+ const char *annex, gdb_byte *readbuf,
+ const gdb_byte *writebuf, ULONGEST offset, LONGEST len)
+{
+ switch (object)
+ {
+ case TARGET_OBJECT_MEMORY:
+ if (readbuf)
+ return child_xfer_memory (offset, readbuf, len, 0/*write*/,
+ NULL, ops);
+ if (writebuf)
+ return child_xfer_memory (offset, (void *) writebuf, len, 1/*write*/,
+ NULL, ops);
+ return -1;
+
+ case TARGET_OBJECT_UNWIND_TABLE:
+#ifndef NATIVE_XFER_UNWIND_TABLE
+#define NATIVE_XFER_UNWIND_TABLE(OPS,OBJECT,ANNEX,WRITEBUF,READBUF,OFFSET,LEN) (-1)
+#endif
+ return NATIVE_XFER_UNWIND_TABLE (ops, object, annex, readbuf, writebuf,
+ offset, len);
+
+ case TARGET_OBJECT_AUXV:
+#ifndef NATIVE_XFER_AUXV
+#define NATIVE_XFER_AUXV(OPS,OBJECT,ANNEX,WRITEBUF,READBUF,OFFSET,LEN) (-1)
+#endif
+ return NATIVE_XFER_AUXV (ops, object, annex, readbuf, writebuf,
+ offset, len);
+
+ default:
+ return -1;
+ }
+}
+
+#if !defined(CHILD_PID_TO_STR)
+char *
+child_pid_to_str (ptid_t ptid)
+{
+ return normal_pid_to_str (ptid);
+}
+#endif
+
+static void
+init_child_ops (void)
+{
+ deprecated_child_ops.to_shortname = "child";
+ deprecated_child_ops.to_longname = "Unix child process";
+ deprecated_child_ops.to_doc = "Unix child process (started by the \"run\" command).";
+ deprecated_child_ops.to_open = child_open;
+ deprecated_child_ops.to_attach = child_attach;
+ deprecated_child_ops.to_post_attach = child_post_attach;
+ deprecated_child_ops.to_detach = child_detach;
+ deprecated_child_ops.to_resume = child_resume;
+ deprecated_child_ops.to_wait = child_wait;
+ deprecated_child_ops.to_fetch_registers = fetch_inferior_registers;
+ deprecated_child_ops.to_store_registers = store_inferior_registers;
+ deprecated_child_ops.to_prepare_to_store = child_prepare_to_store;
+ deprecated_child_ops.deprecated_xfer_memory = child_xfer_memory;
+ deprecated_child_ops.to_xfer_partial = child_xfer_partial;
+ deprecated_child_ops.to_files_info = child_files_info;
+ deprecated_child_ops.to_insert_breakpoint = memory_insert_breakpoint;
+ deprecated_child_ops.to_remove_breakpoint = memory_remove_breakpoint;
+ deprecated_child_ops.to_terminal_init = terminal_init_inferior;
+ deprecated_child_ops.to_terminal_inferior = terminal_inferior;
+ deprecated_child_ops.to_terminal_ours_for_output = terminal_ours_for_output;
+ deprecated_child_ops.to_terminal_save_ours = terminal_save_ours;
+ deprecated_child_ops.to_terminal_ours = terminal_ours;
+ deprecated_child_ops.to_terminal_info = child_terminal_info;
+ deprecated_child_ops.to_kill = kill_inferior;
+ deprecated_child_ops.to_create_inferior = child_create_inferior;
+ deprecated_child_ops.to_post_startup_inferior = child_post_startup_inferior;
+ deprecated_child_ops.to_acknowledge_created_inferior = child_acknowledge_created_inferior;
+ deprecated_child_ops.to_insert_fork_catchpoint = child_insert_fork_catchpoint;
+ deprecated_child_ops.to_remove_fork_catchpoint = child_remove_fork_catchpoint;
+ deprecated_child_ops.to_insert_vfork_catchpoint = child_insert_vfork_catchpoint;
+ deprecated_child_ops.to_remove_vfork_catchpoint = child_remove_vfork_catchpoint;
+ deprecated_child_ops.to_follow_fork = child_follow_fork;
+ deprecated_child_ops.to_insert_exec_catchpoint = child_insert_exec_catchpoint;
+ deprecated_child_ops.to_remove_exec_catchpoint = child_remove_exec_catchpoint;
+ deprecated_child_ops.to_reported_exec_events_per_exec_call = child_reported_exec_events_per_exec_call;
+ deprecated_child_ops.to_has_exited = child_has_exited;
+ deprecated_child_ops.to_mourn_inferior = child_mourn_inferior;
+ deprecated_child_ops.to_can_run = child_can_run;
+ deprecated_child_ops.to_thread_alive = child_thread_alive;
+ deprecated_child_ops.to_pid_to_str = child_pid_to_str;
+ deprecated_child_ops.to_stop = child_stop;
+ deprecated_child_ops.to_enable_exception_callback = child_enable_exception_callback;
+ deprecated_child_ops.to_get_current_exception_event = child_get_current_exception_event;
+ deprecated_child_ops.to_pid_to_exec_file = child_pid_to_exec_file;
+ deprecated_child_ops.to_stratum = process_stratum;
+ deprecated_child_ops.to_has_all_memory = 1;
+ deprecated_child_ops.to_has_memory = 1;
+ deprecated_child_ops.to_has_stack = 1;
+ deprecated_child_ops.to_has_registers = 1;
+ deprecated_child_ops.to_has_execution = 1;
+ deprecated_child_ops.to_magic = OPS_MAGIC;
+}
+
+void
+_initialize_inftarg (void)
+{
+#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 ());
+ fd = open (procname, O_RDONLY);
+ if (fd >= 0)
+ {
+ close (fd);
+ return;
+ }
+#endif
+
+ init_child_ops ();
+ add_target (&deprecated_child_ops);
}
projects / deliverable / binutils-gdb.git / blobdiff