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coll2021
n00b
Joined: 29 May 2021
Posts: 7
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 Posted: Sat May 29, 2021 11:52 am Post subject: [SOLVED]selinux create custom type, seems not work well |
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system info:
gentoo x86_64 recent version;
selinux strict permissive mode;
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what i want?
1. i want create a directory( name private) inside root or home;
1. give this private directory a custom type, in order to no process can access it(this is what i really want);
1. thus, i can hidden some private data in this new created dir;
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what i do?
| Code: | ```private_files.te
policy_module(private_files, 1.0)
require {
type unconfined_t;
type setroubleshootd_t;
}
type private_files_t;
fs_associate(private_files_t);
allow unconfined_t private_files_t:{ dir file } relabelto;
allow setroubleshootd_t private_files_t:{ dir file } getattr;
``` |
this is work fine in fedora-34，but not in gentoo;
in gentoo, when execute: `chcon -t private_files_t /private`，file context changed，but still can acess /privaet dir（like ls /private）；
| Quote: | | code above may be slight difference in gentoo, but i tried many way, compile, semodule install correctly(seinfo -t | grep private_files_t, can saw it) ,but still can acess /private dir!! what i miss??? |
anyone can help, thanks 
Last edited by coll2021 on Wed Jun 02, 2021 1:48 am; edited 1 time in total |
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alamahant
Advocate
Joined: 23 Mar 2019
Posts: 3924
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| Posted: Sat May 29, 2021 12:02 pm Post subject: |
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Welcome to Gentoo
Plz try
| Code: |
semanage fcontext -a -t private_files_t /private(/.*)?
restorecon -R /private
ls -lZ(d) /private
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If the context is correct and still you dont get what you need then you mis defined your policy.
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coll2021
n00b
Joined: 29 May 2021
Posts: 7
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| Posted: Sat May 29, 2021 12:07 pm Post subject: |
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| alamahant wrote: | Welcome to Gentoo
Plz try
| Code: |
semanage fcontext -a -t private_files_t /private(/.*)?
restorecon -R /private
ls -lZ /private
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yes, i tried.
| Code: | 1. `seinfo -t | grep private_files_t`, cant saw it
1.` semanage fcontext -a -t private_files_t "/private(/.*)?"`，Value error, type private_files_t is invalid, must be a file or device type
1. `ls -lZ -d /private` ，... root:object_r:private_files_t /private； |
Last edited by coll2021 on Sat May 29, 2021 12:09 pm; edited 2 times in total |
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alamahant
Advocate
Joined: 23 Mar 2019
Posts: 3924
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| Posted: Sat May 29, 2021 12:08 pm Post subject: |
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Then wrong policy......
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coll2021
n00b
Joined: 29 May 2021
Posts: 7
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| Posted: Sat May 29, 2021 12:11 pm Post subject: |
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| alamahant wrote: | Then wrong policy......
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but，i compiled and installed successfully，and can saw private_files_type，what i miss ？ |
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alamahant
Advocate
Joined: 23 Mar 2019
Posts: 3924
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| Posted: Sat May 29, 2021 12:21 pm Post subject: |
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Maybe
| Code: |
.
.
.
type private_files_t;
files_type(private_files_t);
.
.
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coll2021
n00b
Joined: 29 May 2021
Posts: 7
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| Posted: Sat May 29, 2021 12:43 pm Post subject: |
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| alamahant wrote: | Maybe
| Code: |
.
.
.
type private_files_t;
files_type(private_files_t);
.
.
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tried, but not work. thanks
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may be type need associate with role in config file (whatever)? |
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salam
Apprentice
Joined: 29 Sep 2005
Posts: 226
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| Posted: Tue Jun 01, 2021 8:40 pm Post subject: |
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Given the info:
1) .... in gentoo, when execute: `chcon -t private_files_t /private`，file context changed...
2) but still can acess /privaet dir（like ls /private）
3)
system info:
gentoo x86_64 recent version;
selinux strict permissive mode;
Isn't that thing the cause? |
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coll2021
n00b
Joined: 29 May 2021
Posts: 7
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| Posted: Wed Jun 02, 2021 1:34 am Post subject: |
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| salam wrote: | Given the info:
1) .... in gentoo, when execute: `chcon -t private_files_t /private`，file context changed...
2) but still can acess /privaet dir（like ls /private）
3)
system info:
gentoo x86_64 recent version;
selinux strict permissive mode;
Isn't that thing the cause? |
yep, almost
1. should in enforcing mode;
2. not use `files_type` macro in the te file; |
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