【发布时间】:2020-07-02 23:16:45
【问题描述】:
我似乎无法打开应该属于我的文件...我觉得很傻,有点像我疯了,我不知道出了什么问题...但我一定是错过了什么。
# Example shows that all files in directory are owned by user2 with 664 permission
$ ls -la /home/user1/filestore
total 2788
drw-rw-r-- 2 user2 user2 2 0480 Jul 2 12:44 .
drwxrwxr-x 8558 user1 user1 2494464 Jul 1 16:28 ..
-rw-rw-r-- 1 user2 user2 23718 Jul 1 15:02 z6B00001-1593640926.readings
-rw-rw-r-- 1 user2 user2 73606 Jul 2 12:44 z6B00001-1593719061.readings
-rw-rw-r-- 1 user2 user2 232629 Jul 2 14:44 z6B00001-1593719062.readings
# showing current user
$ whoami
user1
# groups for current user
$ groups user1
user1 user2
# groups for user2
$ groups user2
user2 user1
# start python as user2
$ sudo -u user2 python
>>> open("/home/user1/filestore/z6B00001-1593640926.readings","rb") as f:
... f.read()
Traceback (most recent call last): #<<< what??????????
File "<stdin>", line 1, in <module>
IOError: [Errno 13] Permission denied: '/home/user1/filestore/z6B00001-1593719062.readings'
>>> os.system("whoami")
user2
0
>>> os.system("groups")
user2 user1
0
>>> os.system("ls -la /home/user1/filestore")
ls: cannot access '/home/user1/filestore/.': Permission denied
ls: cannot access '/home/user1/filestore/..': Permission denied
ls: cannot access '/home/user1/filestore/z6B00001-1593640926.readings': Permission denied
ls: cannot access '/home/user1/filestore/z6B00001-1593719061.readings': Permission denied
ls: cannot access '/home/user1/filestore/z6B00001-1593719062.readings': Permission denied
total 0
d????????? ? ? ? ? ? .
d????????? ? ? ? ? ? ..
-????????? ? ? ? ? ? z6B00001-1593640926.readings
-????????? ? ? ? ? ? z6B00001-1593719061.readings
-????????? ? ? ? ? ? z6B00001-1593719062.readings
256
>>> exit()
$ sudo -u user1 python
>>> open("/home/user1/filestore/z6B00001-1593640926.readings","rb") as f:
... f.read()
Traceback (most recent call last): #<<< what??????????
File "<stdin>", line 1, in <module>
IOError: [Errno 13] Permission denied: '/home/user1/filestore/z6B00001-1593719062.readings'
>>> os.system("whoami")
user1
0
>>> os.system("groups")
user1 user2
0
预期的行为是能够以用户 1 或用户 2 的身份打开和读取(和写入)这些文件......目前两者都不起作用:(
【问题讨论】:
-
如果您尝试在 python 之外读取文件,结果是什么? (例如,用
md5sum /home/user1/filestore/z6B00001-1593640926.readings计算它的校验和) -
同样的错误(当使用任何一个用户配置文件时......如果我是 root,它非常高兴)......我想也许我只是想通了......我认为目录需要 x 标志。 ..也许
-
是的,我觉得很傻......我不知道目录需要执行权限:(显示我对 linux 了解多少
-
Sooo ...首先让我印象深刻的是
/home/user1/filestore和/home/sbsu/store/z6B00001之间的差异...该文件系统是如何安装的,它是如何进入/home/user1的? -
啊,我试图掩盖我的真实路径并错过了一个:P(已修复)
标签: linux permissions filesystems