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Bug #3301

closed

cfuse: chmod not getting respected

Added by Sam Lang over 11 years ago. Updated over 11 years ago.

Status:
Resolved
Priority:
Normal
Assignee:
Sam Lang
Category:
-
Target version:
-
% Done:

0%

Source:
Development
Tags:
Backport:
Regression:
Severity:
Reviewed:
Affected Versions:
ceph-qa-suite:
Component(FS):
Labels (FS):
Pull request ID:
Crash signature (v1):
Crash signature (v2):

Description

echo "foo" > foo
chmod 400 foo
echo "bar" >> foo

Should fail with EPERM, but it succeeds.

Attached is a client log from the script.

Files

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client.admin.log (216 KB) client.admin.log Sam Lang, 10/15/2012 07:17 AM
client.admin.log (153 KB) client.admin.log client log for 2nd chmod case Sam Lang, 10/16/2012 09:56 AM
client.admin.log (229 KB) client.admin.log A less confusing log of chmod issue #2 Sam Lang, 10/16/2012 10:19 AM
mds.a.log (618 KB) mds.a.log Sam Lang, 10/16/2012 10:48 AM
client.admin.log (126 KB) client.admin.log Sam Lang, 10/16/2012 10:48 AM
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 #1

Updated by Sage Weil over 11 years ago

yeah, apparently fuse isn't doing the check itself... :/ we should enforce this in Client::_open(), methinks. after the if/else block, before if (result >= 0)

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 #2

Updated by Sam Lang over 11 years ago

Another issue:

chmod 400 a11
echo "foo" >> a11
< now fails correctly >
chmod 644 a11
ls la a11
-r------- 1 root root 4 Oct 16 11:05 a11

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 #3

Updated by Sam Lang over 11 years ago

This log is of the client with only the following operations performed:

echo baz > baz
chmod 400 baz
chmod 644 baz
ls -la baz

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 #4

Updated by Sam Lang over 11 years ago

This time the logs are from doing the following:

root@scout:/tmp/cmnt# echo foo > foo
root@scout:/tmp/cmnt# chmod 400 foo
root@scout:/tmp/cmnt# chmod 644 foo
root@scout:/tmp/cmnt# ls la foo
-rw-r--r- 1 root root 4 Oct 16 12:44 foo
root@scout:/tmp/cmnt# chmod 400 foo
root@scout:/tmp/cmnt# ls la foo
-rw-r--r- 1 root root 4 Oct 16 12:44 foo
root@scout:/tmp/cmnt# echo foo >> foo
root@scout:/tmp/cmnt# ls la foo
-rw-r--r- 1 root root 8 Oct 16 12:45 foo

Note that the permissions were correct after the second chmod, but not after the third, and the append should have failed.

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 #5

Updated by Sage Weil over 11 years ago

  • Status changed from In Progress to Resolved
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