def do_execute(self, stdin_file, stdout_file, stderr_file, cgroup_file):
pid = fork()
if not pid:
chdir('/in/package')
if stdin_file:
fd = os_open(stdin_file, O_RDONLY)
dup2(fd, STDIN_FILENO)
os_close(fd)
if stdout_file:
fd = os_open(stdout_file, O_WRONLY)
dup2(fd, STDOUT_FILENO)
os_close(fd)
if stderr_file:
fd = os_open(stderr_file, O_WRONLY)
dup2(fd, STDERR_FILENO)
os_close(fd)
if cgroup_file:
enter_cgroup(cgroup_file)
execve(self.execute_file, self.execute_args, SPAWN_ENV)
return wait_and_reap_zombies(pid)
python类STDERR_FILENO的实例源码
def do_build(self, output_file, cgroup_file):
pid = fork()
if not pid:
chdir('/out')
os_close(STDIN_FILENO)
if output_file:
fd = os_open(output_file, O_WRONLY)
dup2(fd, STDOUT_FILENO)
dup2(fd, STDERR_FILENO)
os_close(fd)
if cgroup_file:
enter_cgroup(cgroup_file)
execve(self.compiler_file, self.compiler_args, SPAWN_ENV)
return wait_and_reap_zombies(pid)
def __fork_pty(self):
'''This implements a substitute for the forkpty system call. This
should be more portable than the pty.fork() function. Specifically,
this should work on Solaris.
Modified 10.06.05 by Geoff Marshall: Implemented __fork_pty() method to
resolve the issue with Python's pty.fork() not supporting Solaris,
particularly ssh. Based on patch to posixmodule.c authored by Noah
Spurrier::
http://mail.python.org/pipermail/python-dev/2003-May/035281.html
'''
parent_fd, child_fd = os.openpty()
if parent_fd < 0 or child_fd < 0:
raise ExceptionPexpect("Could not open with os.openpty().")
pid = os.fork()
if pid == pty.CHILD:
# Child.
os.close(parent_fd)
self.__pty_make_controlling_tty(child_fd)
os.dup2(child_fd, self.STDIN_FILENO)
os.dup2(child_fd, self.STDOUT_FILENO)
os.dup2(child_fd, self.STDERR_FILENO)
else:
# Parent.
os.close(child_fd)
return pid, parent_fd
def __fork_pty(self):
'''This implements a substitute for the forkpty system call. This
should be more portable than the pty.fork() function. Specifically,
this should work on Solaris.
Modified 10.06.05 by Geoff Marshall: Implemented __fork_pty() method to
resolve the issue with Python's pty.fork() not supporting Solaris,
particularly ssh. Based on patch to posixmodule.c authored by Noah
Spurrier::
http://mail.python.org/pipermail/python-dev/2003-May/035281.html
'''
parent_fd, child_fd = os.openpty()
if parent_fd < 0 or child_fd < 0:
raise ExceptionPexpect("Could not open with os.openpty().")
pid = os.fork()
if pid == pty.CHILD:
# Child.
os.close(parent_fd)
self.__pty_make_controlling_tty(child_fd)
os.dup2(child_fd, self.STDIN_FILENO)
os.dup2(child_fd, self.STDOUT_FILENO)
os.dup2(child_fd, self.STDERR_FILENO)
else:
# Parent.
os.close(child_fd)
return pid, parent_fd
def __fork_pty(self):
'''This implements a substitute for the forkpty system call. This
should be more portable than the pty.fork() function. Specifically,
this should work on Solaris.
Modified 10.06.05 by Geoff Marshall: Implemented __fork_pty() method to
resolve the issue with Python's pty.fork() not supporting Solaris,
particularly ssh. Based on patch to posixmodule.c authored by Noah
Spurrier::
http://mail.python.org/pipermail/python-dev/2003-May/035281.html
'''
parent_fd, child_fd = os.openpty()
if parent_fd < 0 or child_fd < 0:
raise ExceptionPexpect("Could not open with os.openpty().")
pid = os.fork()
if pid == pty.CHILD:
# Child.
os.close(parent_fd)
self.__pty_make_controlling_tty(child_fd)
os.dup2(child_fd, self.STDIN_FILENO)
os.dup2(child_fd, self.STDOUT_FILENO)
os.dup2(child_fd, self.STDERR_FILENO)
else:
# Parent.
os.close(child_fd)
return pid, parent_fd
