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ptyfwd: reset nonblocking mode

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Apparently bash doesn't turn off non-blocking mode on stdin/stdout when
reading from it, so be nice to bash. Ideally bash would do this on its
own for robustness reasons, though.

https://bugs.freedesktop.org/show_bug.cgi?id=70622
This commit is contained in:
Lennart Poettering 2014-02-21 18:04:29 +01:00
parent 210054d76c
commit d60473c7ba
1 changed files with 8 additions and 3 deletions
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11
src/shared/ptyfwd.c
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@ -78,9 +78,9 @@ static int process_pty_loop(int master, sigset_t *mask, pid_t kill_pid, int sign
assert(kill_pid == 0 || kill_pid > 1);
assert(signo >= 0 && signo < _NSIG);
fd_nonblock(STDIN_FILENO, 1);
fd_nonblock(STDOUT_FILENO, 1);
fd_nonblock(master, 1);
fd_nonblock(STDIN_FILENO, true);
fd_nonblock(STDOUT_FILENO, true);
fd_nonblock(master, true);
signal_fd = signalfd(-1, mask, SFD_NONBLOCK|SFD_CLOEXEC);
if (signal_fd < 0) {
@ -376,6 +376,11 @@ int process_pty(int master, sigset_t *mask, pid_t kill_pid, int signo) {
if (saved_stdin)
tcsetattr(STDIN_FILENO, TCSANOW, &saved_stdin_attr);
/* STDIN/STDOUT should not be nonblocking normally, so let's
* unconditionally reset it */
fd_nonblock(STDIN_FILENO, false);
fd_nonblock(STDOUT_FILENO, false);
return r;
}