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Cygwin: pty: Switch input and output pipes individually.

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- Previously, input and output pipes were switched together between
  the traditional pty and the pseudo console. However, for example,
  if stdin is redirected to another device, it is better to leave
  input pipe traditional pty side even for non-cygwin program. This
  patch realizes such behaviour.
This commit is contained in:
Takashi Yano
2019-09-14 06:48:14 +09:00
committed by Ken Brown
parent cac5f8781a
commit 3355a6d4b9
8 changed files with 174 additions and 102 deletions
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9
winsup/cygwin/fhandler.h
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@ -2114,6 +2114,7 @@ class fhandler_pty_slave: public fhandler_pty_common
HANDLE inuse; // used to indicate that a tty is in use
HANDLE output_handle_cyg, io_handle_cyg;
DWORD pid_restore;
int fd;
/* Helper functions for fchmod and fchown. */
bool fch_open_handles (bool chown);
@ -2175,18 +2176,18 @@ class fhandler_pty_slave: public fhandler_pty_common
copyto (fh);
return fh;
}
void set_switch_to_pcon (void);
void set_switch_to_pcon (int fd);
void reset_switch_to_pcon (void);
void push_to_pcon_screenbuffer (const char *ptr, size_t len);
void mask_switch_to_pcon (bool mask)
void mask_switch_to_pcon_in (bool mask)
{
if (!mask && get_ttyp ()->pcon_pid &&
get_ttyp ()->pcon_pid != myself->pid &&
kill (get_ttyp ()->pcon_pid, 0) == 0)
return;
get_ttyp ()->mask_switch_to_pcon = mask;
get_ttyp ()->mask_switch_to_pcon_in = mask;
}
void fixup_after_attach (bool native_maybe);
void fixup_after_attach (bool native_maybe, int fd);
bool is_line_input (void)
{
return get_ttyp ()->ti.c_lflag & ICANON;