def run_execve(program, args=None, env=None, do_path_lookup=False):
if args is None:
args = [program]
else:
args = [program] + args
if env is None:
env = {}
# we cannot directly call execve() because it replaces the
# current process.
fd_read, fd_write = os.pipe()
childpid = os.fork()
if childpid == 0:
# in the child
os.close(fd_read)
os.dup2(fd_write, 1) # stdout
os.close(fd_write)
if do_path_lookup:
os.execvp(program, args)
else:
rposix.execve(program, args, env)
assert 0, "should not arrive here"
else:
# in the parent
os.close(fd_write)
child_stdout = []
while True:
data = os.read(fd_read, 4096)
if not data: break # closed
child_stdout.append(data)
pid, status = os.waitpid(childpid, 0)
os.close(fd_read)
return status, ''.join(child_stdout)
def run_execve(program, args=None, env=None, do_path_lookup=False):
if args is None:
args = [program]
else:
args = [program] + args
if env is None:
env = {}
# we cannot directly call execve() because it replaces the
# current process.
fd_read, fd_write = os.pipe()
childpid = os.fork()
if childpid == 0:
# in the child
os.close(fd_read)
os.dup2(fd_write, 1) # stdout
os.close(fd_write)
if do_path_lookup:
os.execvp(program, args)
else:
rposix.execve(program, args, env)
assert 0, "should not arrive here"
else:
# in the parent
os.close(fd_write)
child_stdout = []
while True:
data = os.read(fd_read, 4096)
if not data: break # closed
child_stdout.append(data)
pid, status = os.waitpid(childpid, 0)
os.close(fd_read)
return status, ''.join(child_stdout)