87b0bb13cb
* common/linux-procfs.c (linux_proc_get_int): New, from linux_proc_get_tgid, change its LWPID type to pid_t, add parameter field. (linux_proc_get_tgid): Only call linux_proc_get_int. (linux_proc_get_tracerpid): New. (linux_proc_pid_has_state): New, from linux_proc_pid_is_zombie. (linux_proc_pid_is_stopped, linux_proc_pid_is_zombie): Only call linux_proc_pid_has_state. * common/linux-procfs.h (linux_proc_get_tracerpid): New declaration. * common/linux-ptrace.c: Include linux-procfs.h and buffer.h. (linux_ptrace_attach_warnings): New. * common/linux-ptrace.h (struct buffer, linux_ptrace_attach_warnings): New declaration. * linux-nat.c: Include exceptions.h, linux-ptrace.h and buffer.h. (linux_nat_attach): New variables ex, buffer, message and message_s. Wrap to_attach by TRY_CATCH and call linux_ptrace_attach_warnings. gdb/gdbserver/ * linux-low.c (linux_attach_lwp_1): New variable buffer. Call linux_ptrace_attach_warnings. gdb/testsuite/ * gdb.base/attach-twice.c: New files. * gdb.base/attach-twice.exp: New files.
49 lines
1.6 KiB
C
49 lines
1.6 KiB
C
/* Linux-specific ptrace manipulation routines.
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Copyright (C) 2012 Free Software Foundation, Inc.
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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 3 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, see <http://www.gnu.org/licenses/>. */
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#ifdef GDBSERVER
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#include "server.h"
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#else
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#include "defs.h"
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#include "gdb_string.h"
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#endif
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#include "linux-ptrace.h"
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#include "linux-procfs.h"
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#include "buffer.h"
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/* Find all possible reasons we could fail to attach PID and append these
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newline terminated reason strings to initialized BUFFER. '\0' termination
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of BUFFER must be done by the caller. */
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void
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linux_ptrace_attach_warnings (pid_t pid, struct buffer *buffer)
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{
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pid_t tracerpid;
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tracerpid = linux_proc_get_tracerpid (pid);
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if (tracerpid > 0)
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buffer_xml_printf (buffer, _("warning: process %d is already traced "
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"by process %d\n"),
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(int) pid, (int) tracerpid);
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if (linux_proc_pid_is_zombie (pid))
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buffer_xml_printf (buffer, _("warning: process %d is a zombie "
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"- the process has already terminated\n"),
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(int) pid);
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}
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