diff options
| -rw-r--r-- | loginutils/getty.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/loginutils/getty.c b/loginutils/getty.c index 0f060ae..4b1b73b 100644 --- a/loginutils/getty.c +++ b/loginutils/getty.c @@ -556,6 +556,16 @@ int getty_main(int argc UNUSED_PARAM, char **argv) // pid, getppid(), // getsid(0), getpgid(0)); bb_perror_msg_and_die("setsid"); + /* + * When we can end up here? + * Example: setsid() fails when run alone in interactive shell: + * # getty 115200 /dev/tty2 + * because shell's child (getty) is put in a new process group. + * But doesn't fail if shell is not interactive + * (and therefore doesn't create process groups for pipes), + * or if getty is not the first process in the process group: + * # true | getty 115200 /dev/tty2 + */ } /* Looks like we are already a session leader. * In this case (setsid failed) we may still have ctty, |