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| author | Michael Vogt <michael.vogt@ubuntu.com> | 2009-09-24 09:30:17 +0200 |
|---|---|---|
| committer | Michael Vogt <michael.vogt@ubuntu.com> | 2009-09-24 09:30:17 +0200 |
| commit | 4e5500361a964f49656a39b001ba246f113f8cdd (patch) | |
| tree | 287c6c41192cb796915e6dfe8dbbcfbff72643cc /apt-pkg | |
| parent | c6aa14e46842b0059c1648125562793e5edd08ee (diff) | |
| download | apt-4e5500361a964f49656a39b001ba246f113f8cdd.tar.gz | |
* apt-pkg/deb/dpkgpm.cc:
- when tcgetattr() returns non-zero skip all pty magic
(thanks to Simon Richter, closes: #509866)
Diffstat (limited to 'apt-pkg')
| -rw-r--r-- | apt-pkg/deb/dpkgpm.cc | 51 |
1 files changed, 27 insertions, 24 deletions
diff --git a/apt-pkg/deb/dpkgpm.cc b/apt-pkg/deb/dpkgpm.cc index f787f365e..ab71d4e96 100644 --- a/apt-pkg/deb/dpkgpm.cc +++ b/apt-pkg/deb/dpkgpm.cc @@ -809,32 +809,35 @@ bool pkgDPkgPM::Go(int OutStatusFd) struct termios tt; struct winsize win; - int master; - int slave; + int master = -1; + int slave = -1; - // FIXME: setup sensible signal handling (*ick*) - tcgetattr(0, &tt); - ioctl(0, TIOCGWINSZ, (char *)&win); - if (openpty(&master, &slave, NULL, &tt, &win) < 0) + // if tcgetattr does not return zero there was a error + // and we do not do any pty magic + if (tcgetattr(0, &tt) == 0) { - const char *s = _("Can not write log, openpty() " - "failed (/dev/pts not mounted?)\n"); - fprintf(stderr, "%s",s); - fprintf(term_out, "%s",s); - master = slave = -1; - } else { - struct termios rtt; - rtt = tt; - cfmakeraw(&rtt); - rtt.c_lflag &= ~ECHO; - // block SIGTTOU during tcsetattr to prevent a hang if - // the process is a member of the background process group - // http://www.opengroup.org/onlinepubs/000095399/functions/tcsetattr.html - sigemptyset(&sigmask); - sigaddset(&sigmask, SIGTTOU); - sigprocmask(SIG_BLOCK,&sigmask, &original_sigmask); - tcsetattr(0, TCSAFLUSH, &rtt); - sigprocmask(SIG_SETMASK, &original_sigmask, 0); + ioctl(0, TIOCGWINSZ, (char *)&win); + if (openpty(&master, &slave, NULL, &tt, &win) < 0) + { + const char *s = _("Can not write log, openpty() " + "failed (/dev/pts not mounted?)\n"); + fprintf(stderr, "%s",s); + fprintf(term_out, "%s",s); + master = slave = -1; + } else { + struct termios rtt; + rtt = tt; + cfmakeraw(&rtt); + rtt.c_lflag &= ~ECHO; + // block SIGTTOU during tcsetattr to prevent a hang if + // the process is a member of the background process group + // http://www.opengroup.org/onlinepubs/000095399/functions/tcsetattr.html + sigemptyset(&sigmask); + sigaddset(&sigmask, SIGTTOU); + sigprocmask(SIG_BLOCK,&sigmask, &original_sigmask); + tcsetattr(0, TCSAFLUSH, &rtt); + sigprocmask(SIG_SETMASK, &original_sigmask, 0); + } } // Fork dpkg |