gdb/testsuite/gdb.base/attach-non-pgrp-leader.exp

   1 # Copyright 2017-2018 Free Software Foundation, Inc.
   2
   3 # This program is free software; you can redistribute it and/or modify
   4 # it under the terms of the GNU General Public License as published by
   5 # the Free Software Foundation; either version 3 of the License, or
   6 # (at your option) any later version.
   7 #
   8 # This program is distributed in the hope that it will be useful,
   9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 # GNU General Public License for more details.
  12 #
  13 # You should have received a copy of the GNU General Public License
  14 # along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  15
  16 # Check that we can attach to processes that are not process group
  17 # leaders.  We test that by attaching to a fork child that doesn't
  18 # call any of setpgrp/setpgid/setsid to move itself to a new process
  19 # group.
  20
  21 if {![can_spawn_for_attach]} {
  22     return 0
  23 }
  24
  25 standard_testfile
  26
  27 if { [build_executable ${testfile}.exp ${testfile} $srcfile {debug}] == -1 } {
  28     return -1
  29 }
  30
  31 proc do_test {} {
  32     global binfile
  33
  34     set test_spawn_id [spawn_wait_for_attach $binfile]
  35     set parent_pid [spawn_id_get_pid $test_spawn_id]
  36
  37     # Attach to the parent, run it to a known point, extract the
  38     # child's PID, and detach.
  39     with_test_prefix "parent" {
  40         clean_restart ${binfile}
  41
  42         gdb_test "attach $parent_pid" \
  43             "Attaching to program.*, process $parent_pid.*" \
  44             "attach"
  45
  46         gdb_breakpoint "marker"
  47         gdb_continue_to_breakpoint "marker"
  48
  49         set child_pid [get_integer_valueof "child_pid" -1]
  50         if {$child_pid == -1} {
  51             return
  52         }
  53
  54         gdb_test "detach" \
  55             "Detaching from program: .*process $parent_pid"
  56     }
  57
  58     # Start over, and attach to the child this time.
  59     with_test_prefix "child" {
  60         clean_restart $binfile
  61
  62         gdb_test "attach $child_pid" \
  63             "Attaching to program.*, process $child_pid.*" \
  64             "attach"
  65
  66         gdb_breakpoint "marker"
  67         gdb_continue_to_breakpoint "marker"
  68
  69         gdb_test "detach" \
  70             "Detaching from program: .*process $child_pid"
  71     }
  72
  73     kill_wait_spawned_process $test_spawn_id
  74 }
  75
  76 do_test