Subject: bin/32360: recent changes breaks systrace fswrite
To: None <gnats-admin@netbsd.org, netbsd-bugs@netbsd.org>
From: None <jeff@delnoch.net>
List: netbsd-bugs
Date: 12/22/2005 16:50:01
>Number: 32360
>Category: bin
>Synopsis: recent changes breaks systrace fswrite
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: bin-bug-people
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Thu Dec 22 16:50:00 +0000 2005
>Originator: Jeff Ito
>Release: NetBSD 3.99.14
>Organization:
>Environment:
NetBSD 3.99.14 (LAB) #0: Tue Dec 20 09:41:28 EST 2005
>Description:
Recent changes, (somewhere from May onward, more likely ~August onward but i dont have the binary timestamp to prove it) have caused systrace to generate errors.
where:
netbsd-fswrite: filename eq "/var/db/ntp.drift.TEMP" then permit
used to work, I am now getting:
systrace: deny user: ntpd, prog: /usr/sbin/ntpd, pid: 442(0)[791], policy: /usr/sbin/ntpd, filters: 98, syscall: netbsd-fswrite(5), fi
lename: /<non-existent filename>: /var/db/ntp.drift.TEMP
A simple test is
old behavior:
> systrace -A touch bah
>
new behavior:
> systrace -A touch bah
touch: bah: Permission denied
A look at ktrace indicates it may be related to __stat13 vs __stat30
old:
11053 touch CALL __stat13(0xbfbfe9fe,0xbfbfe844)
11053 touch NAMI "/home/jeff/bah"
11053 touch RET __stat13 -1 errno 2 No such file or directory
11053 touch CALL open(0xbfbfe9fe,0x201,0x1b6)
11053 touch NAMI "/home/jeff/bah"
11053 touch RET open 3
11053 touch CALL __fstat13(3,0xbfbfe844)
11053 touch RET __fstat13 0
new:
9742 1 touch CALL __stat30(0xbfbfe976,0xbfbfe7a4)
9742 1 touch NAMI "bah"
9742 1 touch RET __stat30 -1 errno 2 No such file or directory
9742 1 touch CALL open(0xbfbfe976,0x201,0x1b6)
9742 1 touch NAMI "/<non-existent filename>: bah"
9742 1 touch RET open -1 errno 13 Permission denied
>How-To-Repeat:
> systrace -A touch bah
>Fix:
unknown