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authorMichael Vogt <mvo@debian.org>2014-04-30 17:04:29 +0200
committerMichael Vogt <mvo@debian.org>2014-04-30 17:04:29 +0200
commita11f6c973bc0dc226d8953e3edb6333d526c3143 (patch)
treedf7c21f028089b99d63289d784ee5bd23d54d380 /apt-pkg
parent3163087b04ca5c297a7c98c018ba5c30e850a11e (diff)
Only do openpty() if both stdin/stdout are terminals
Closes: 746434
Diffstat (limited to 'apt-pkg')
-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)