diff options
Diffstat (limited to 'apt-pkg/contrib/fileutl.cc')
| -rw-r--r-- | apt-pkg/contrib/fileutl.cc | 37 |
1 files changed, 36 insertions, 1 deletions
diff --git a/apt-pkg/contrib/fileutl.cc b/apt-pkg/contrib/fileutl.cc index bc1681820..43717da16 100644 --- a/apt-pkg/contrib/fileutl.cc +++ b/apt-pkg/contrib/fileutl.cc @@ -1,6 +1,6 @@ // -*- mode: cpp; mode: fold -*- // Description /*{{{*/ -// $Id: fileutl.cc,v 1.26 1999/03/21 07:24:14 jgg Exp $ +// $Id: fileutl.cc,v 1.27 1999/04/20 05:02:09 jgg Exp $ /* ###################################################################### File Utilities @@ -25,6 +25,7 @@ #include <sys/fcntl.h> #include <sys/types.h> #include <sys/time.h> +#include <signal.h> #include <errno.h> /*}}}*/ @@ -214,6 +215,40 @@ bool WaitFd(int Fd,bool write,unsigned long timeout) return true; } /*}}}*/ +// ExecFork - Magical fork that sanitizes the context before execing /*{{{*/ +// --------------------------------------------------------------------- +/* This is used if you want to cleanse the environment for the forked + child, it fixes up the important signals and nukes all of the fds, + otherwise acts like normal fork. */ +int ExecFork() +{ + // Fork off the process + pid_t Process = fork(); + if (Process < 0) + { + cerr << "FATAL -> Failed to fork." << endl; + exit(100); + } + + // Spawn the subprocess + if (Process == 0) + { + // Setup the signals + signal(SIGPIPE,SIG_DFL); + signal(SIGQUIT,SIG_DFL); + signal(SIGINT,SIG_DFL); + signal(SIGWINCH,SIG_DFL); + signal(SIGCONT,SIG_DFL); + signal(SIGTSTP,SIG_DFL); + + // Close all of our FDs - just in case + for (int K = 3; K != 40; K++) + fcntl(K,F_SETFD,FD_CLOEXEC); + } + + return Process; +} + /*}}}*/ // FileFd::FileFd - Open a file /*{{{*/ // --------------------------------------------------------------------- |