diff options
Diffstat (limited to 'gdb/nat/linux-ptrace.c')
| -rw-r--r-- | gdb/nat/linux-ptrace.c | 34 |
1 files changed, 31 insertions, 3 deletions
diff --git a/gdb/nat/linux-ptrace.c b/gdb/nat/linux-ptrace.c index 8bc3f16..a0e0c32 100644 --- a/gdb/nat/linux-ptrace.c +++ b/gdb/nat/linux-ptrace.c @@ -307,6 +307,7 @@ linux_child_function (gdb_byte *child_stack) static void linux_test_for_tracesysgood (int child_pid); static void linux_test_for_tracefork (int child_pid); +static void linux_test_for_exitkill (int child_pid); /* Determine ptrace features available on this target. */ @@ -338,6 +339,8 @@ linux_check_ptrace_features (void) linux_test_for_tracefork (child_pid); + linux_test_for_exitkill (child_pid); + /* Clean things up and kill any pending children. */ do { @@ -449,19 +452,44 @@ linux_test_for_tracefork (int child_pid) "(%d, status 0x%x)"), ret, status); } -/* Enable reporting of all currently supported ptrace events. */ +/* Determine if PTRACE_O_EXITKILL can be used. */ + +static void +linux_test_for_exitkill (int child_pid) +{ + int ret; + + ret = ptrace (PTRACE_SETOPTIONS, child_pid, (PTRACE_TYPE_ARG3) 0, + (PTRACE_TYPE_ARG4) PTRACE_O_EXITKILL); + + if (ret == 0) + current_ptrace_options |= PTRACE_O_EXITKILL; +} + +/* Enable reporting of all currently supported ptrace events. + ATTACHED should be nonzero if we have attached to the inferior. */ void -linux_enable_event_reporting (pid_t pid) +linux_enable_event_reporting (pid_t pid, int attached) { + int ptrace_options; + /* Check if we have initialized the ptrace features for this target. If not, do it now. */ if (current_ptrace_options == -1) linux_check_ptrace_features (); + ptrace_options = current_ptrace_options; + if (attached) + { + /* When attached to our inferior, we do not want the inferior + to die with us if we terminate unexpectedly. */ + ptrace_options &= ~PTRACE_O_EXITKILL; + } + /* Set the options. */ ptrace (PTRACE_SETOPTIONS, pid, (PTRACE_TYPE_ARG3) 0, - (PTRACE_TYPE_ARG4) (uintptr_t) current_ptrace_options); + (PTRACE_TYPE_ARG4) (uintptr_t) ptrace_options); } /* Disable reporting of all currently supported ptrace events. */ |