Python 查看文件的读写权限方法

# -*- coding: utf-8 -*-# @author flynetcnimport sys, os, pwd, stat, datetime;LOG_FILE = '/var/log/checkDirPermission.log';nginxWritableDirs = ['/var/log/nginx','/usr/local/www/var',];otherReadableDirs = ['/var/log/nginx','/usr/local/www/var/log',];dirs = [];files = [];def logger(level, str):	logFd = open(LOG_FILE, 'a');	logFd.write(datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S.%f')+": "+("WARNING " if level else "NOTICE ")+str);	logFd.close();def walktree(top, callback):	for f in os.listdir(top):		pathname = os.path.join(top, f);		mode = os.stat(pathname).st_mode;		if stat.S_ISDIR(mode):			callback(pathname, True);			walktree(pathname, callback);		elif stat.S_ISREG(mode):			callback(pathname, False);		else:			logger(1, "walktree skipping %s/n" % (pathname));def collectPath(path, isDir=False):	if isDir:		dirs.append(path);	else:		files.append(path);	def checkNginxWritableDirs(paths):	uid = pwd.getpwnam('nginx').pw_uid;	gid = pwd.getpwnam('nginx').pw_gid;	for d in paths:		dstat = os.stat(d);		if dstat.st_uid != uid:			try:				os.chown(d, uid, gid);			except:				logger(1, "chown(%s, nginx, nginx) failed/n" % (d));def checkOtherReadableDirs(paths, isDir=False):	for d in paths:		dstat = os.stat(d);		if isDir:			checkMode = 5;			willBeMode = dstat.st_mode | stat.S_IROTH | stat.S_IXOTH;		else:			checkMode = 4;			willBeMode = dstat.st_mode | stat.S_IROTH;		if int(oct(dstat.st_mode)[-1:]) & checkMode != checkMode:			try:					os.chmod(d, willBeMode);			except:				logger(1, "chmod(%s, %d) failed/n" % (d, oct(willBeMode)));if __name__ == "__main__":	for d in nginxWritableDirs:		walktree(d, collectPath)	dirs = dirs + files;	checkNginxWritableDirs(dirs);	dirs = [];	files = [];	for d in otherReadableDirs:		walktree(d, collectPath)	checkOtherReadableDirs(dirs, True);	checkOtherReadableDirs(files, False);

>>> os.stat('test')posix.stat_result(st_mode=33204, st_ino=93328670, st_dev=18L, st_nlink=1, st_uid=30448, st_gid=1000, st_size=0, st_atime=1445932321, st_mtime=1445932321, st_ctime=1445932321)>>> os.stat('test').st_mode33204>>> oct(os.stat('test').st_mode)'0100664'>>> oct(os.stat('test').st_mode)[-3:]'664'