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Python 查看文件的读写权限方法
时间:2018-01-24 编辑:猪哥 来源:一聚教程网
实例如下:
# -*- coding: utf-8 -*- # @author flynetcn import 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 %sn" % (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) failedn" % (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) failedn" % (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.chmod(path,mode) 这个方法应该很简单,只需要2个参数,一个是路径,一个是说明路径的模式,下面列出了这个用法中可以使用的一些常用的模式:
stat.S_ISUID: Set user ID on execution. 不常用
stat.S_ISGID: Set group ID on execution. 不常用
stat.S_ENFMT: Record locking enforced. 不常用
stat.S_ISVTX: Save text image after execution. 在执行之后保存文字和图片
stat.S_IREAD: Read by owner. 对于拥有者读的权限
stat.S_IWRITE: Write by owner. 对于拥有者写的权限
stat.S_IEXEC: Execute by owner. 对于拥有者执行的权限
stat.S_IRWXU: Read, write, and execute by owner. 对于拥有者读写执行的权限
stat.S_IRUSR: Read by owner. 对于拥有者读的权限
stat.S_IWUSR: Write by owner. 对于拥有者写的权限
stat.S_IXUSR: Execute by owner. 对于拥有者执行的权限
stat.S_IRWXG: Read, write, and execute by group. 对于同组的人读写执行的权限
stat.S_IRGRP: Read by group. 对于同组读的权限
stat.S_IWGRP: Write by group. 对于同组写的权限
stat.S_IXGRP: Execute by group. 对于同组执行的权限
stat.S_IRWXO: Read, write, and execute by others. 对于其他组读写执行的权限
stat.S_IROTH: Read by others. 对于其他组读的权限
stat.S_IWOTH: Write by others. 对于其他组写的权限
stat.S_IXOTH: Execute by others. 对于其他组执行的权限
>>> 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_mode 33204 >>> oct(os.stat('test').st_mode) '0100664' >>> oct(os.stat('test').st_mode)[-3:] '664'
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