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authorMichael Vogt <mvo@debian.org>2014-04-30 17:04:29 +0200
committerMichael Vogt <mvo@debian.org>2014-06-12 08:43:44 +0200
commitb2cde5777fd9ab41d1b9fe5ce91196c0d3e8227d (patch)
tree176e035b176bf77b26224daeb2f2f00426aaa2da /apt-pkg/deb/dpkgpm.cc
parentbf5a35614195aadcb3175e2617b693cd865dd640 (diff)
Only do openpty() if both stdin/stdout are terminals
Closes: 746434
Diffstat (limited to 'apt-pkg/deb/dpkgpm.cc')
-rw-r--r--apt-pkg/deb/dpkgpm.cc11
1 files changed, 6 insertions, 5 deletions
diff --git a/apt-pkg/deb/dpkgpm.cc b/apt-pkg/deb/dpkgpm.cc
index c52b83c6e..e410594df 100644
--- a/apt-pkg/deb/dpkgpm.cc
+++ b/apt-pkg/deb/dpkgpm.cc
@@ -1053,14 +1053,15 @@ void pkgDPkgPM::StartPtyMagic()
}
// setup the pty and stuff
- struct winsize win;
+ struct winsize win;
- // if tcgetattr does not return zero there was a error
- // and we do not do any pty magic
+ // if tcgetattr for both stdin/stdout returns 0 (no error)
+ // we do the pty magic
_error->PushToStack();
- if (tcgetattr(STDOUT_FILENO, &d->tt) == 0)
+ if (tcgetattr(STDIN_FILENO, &d->tt) == 0 &&
+ tcgetattr(STDOUT_FILENO, &d->tt) == 0)
{
- if (ioctl(1, TIOCGWINSZ, (char *)&win) < 0)
+ if (ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&win) < 0)
{
_error->Errno("ioctl", _("ioctl(TIOCGWINSZ) failed"));
} else if (openpty(&d->master, &d->slave, NULL, &d->tt, &win) < 0)