diff options
| -rw-r--r-- | gdb/ser-go32.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/gdb/ser-go32.c b/gdb/ser-go32.c index 0474000..1d5eea2 100644 --- a/gdb/ser-go32.c +++ b/gdb/ser-go32.c @@ -488,6 +488,10 @@ dos_open (scb, name) return -1; } + /* FIXME: this is a Bad Idea (tm)! One should *never* invent file + handles, since they might be already used by other files/devices. + The Right Way to do this is to create a real handle by dup()'ing + some existing one. */ fd = name[3] - '1'; port = &ports[fd]; if (port->refcnt++ > 0) @@ -650,6 +654,19 @@ dos_get_tty_state (scb) struct dos_ttystate *port = &ports[scb->fd]; struct dos_ttystate *state; + /* Are they asking about a port we opened? */ + if (port->refcnt <= 0) + { + /* We've never heard about this port. We should fail this call, + unless they are asking about one of the 3 standard handles, + in which case we pretend the handle was open by us if it is + connected to a terminal device. This is beacuse Unix + terminals use the serial interface, so GDB expects the + standard handles to go through here. */ + if (scb->fd >= 3 || !isatty (scb->fd)) + return NULL; + } + state = (struct dos_ttystate *) xmalloc (sizeof *state); *state = *port; return (serial_ttystate) state; |