Daniel J Walsh wrote:
On 08/12/2009 07:53 PM, Richard Chapman wrote:
I am running Centos 5.3 in permissive mode - and recently I started getting 4 avcs every time I boot the server. I am not sure - but I think these might have started when I changed my desktop from Gnome to KDE. I have tried the relabelling suggested in the AVC - but this hasn't fixed it. Does it look like I have something set up wrong - or is there a policy problem? Richard.
Summary SELinux is preventing the setxkbmap from using potentially mislabeled files (./.X11-unix). Detailed Description [SELinux is in permissive mode, the operation would have been denied but was permitted due to permissive mode.]
SELinux has denied setxkbmap access to potentially mislabeled file(s) (./.X11-unix). This means that SELinux will not allow setxkbmap to use these files. It is common for users to edit files in their home directory or tmp directories and then move (mv) them to system directories. The problem is that the files end up with the wrong file context which confined applications are not allowed to access.
Allowing Access If you want setxkbmap to access this files, you need to relabel them using restorecon -v './.X11-unix'. You might want to relabel the entire directory using restorecon -R -v './.X11-unix'. Additional Information
Source Context: system_u:system_r:rhgb_t Target Context: system_u:object_r:initrc_tmp_t Target Objects: ./.X11-unix [ dir ] Source: setxkbmap Source Path: /usr/bin/setxkbmap Port: <Unknown> Host: C5.aardvark.com.au Source RPM Packages: xorg-x11-xkb-utils-1.0.2-2.1 Target RPM Packages: Policy RPM: selinux-policy-2.4.6-225.el5 Selinux Enabled: True Policy Type: targeted MLS Enabled: True Enforcing Mode: Permissive Plugin Name: home_tmp_bad_labels Host Name: C5.aardvark.com.au Platform: Linux C5.aardvark.com.au 2.6.18-128.4.1.el5 #1 SMP Tue Aug 4 20:19:25 EDT 2009 x86_64 x86_64 Alert Count: 34 First Seen: Sun Jan 11 17:55:13 2009 Last Seen: Mon Aug 10 18:13:15 2009 Local ID: 0950df01-cfad-420a-9e84-4996a8d31942 Line Numbers: Raw Audit Messages :
host=C5.aardvark.com.au type=AVC msg=audit(1249899195.897:15): avc: denied { search } for pid=4022 comm="setxkbmap" name=".X11-unix" dev=dm-0 ino=27590701 scontext=system_u:system_r:rhgb_t:s0 tcontext=system_u:object_r:initrc_tmp_t:s0 tclass=dir host=C5.aardvark.com.au type=AVC msg=audit(1249899195.897:15): avc: denied { search } for pid=4022 comm="setxkbmap" name=".X11-unix" dev=dm-0 ino=27590701 scontext=system_u:system_r:rhgb_t:s0 tcontext=system_u:object_r:initrc_tmp_t:s0 tclass=dir host=C5.aardvark.com.au type=SYSCALL msg=audit(1249899195.897:15): arch=c000003e syscall=42 success=no exit=-2 a0=3 a1=7fffd74235b0 a2=13 a3=3d29351a30 items=0 ppid=4021 pid=4022 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="setxkbmap" exe="/usr/bin/setxkbmap" subj=system_u:system_r:rhgb_t:s0 key=(null) host=C5.aardvark.com.au type=SYSCALL msg=audit(1249899195.897:15): arch=c000003e syscall=42 success=no exit=-2 a0=3 a1=7fffd74235b0 a2=13 a3=3d29351a30 items=0 ppid=4021 pid=4022 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="setxkbmap" exe="/usr/bin/setxkbmap" subj=system_u:system_r:rhgb_t:s0 key=(null)
Summary SELinux is preventing the setxkbmap from using potentially mislabeled files (./.X11-unix). Detailed Description [SELinux is in permissive mode, the operation would have been denied but was permitted due to permissive mode.]
SELinux has denied setxkbmap access to potentially mislabeled file(s) (./.X11-unix). This means that SELinux will not allow setxkbmap to use these files. It is common for users to edit files in their home directory or tmp directories and then move (mv) them to system directories. The problem is that the files end up with the wrong file context which confined applications are not allowed to access.
Allowing Access If you want setxkbmap to access this files, you need to relabel them using restorecon -v './.X11-unix'. You might want to relabel the entire directory using restorecon -R -v './.X11-unix'. Additional Information
Source Context: system_u:system_r:rhgb_t Target Context: system_u:object_r:initrc_tmp_t Target Objects: ./.X11-unix [ dir ] Source: setxkbmap Source Path: /usr/bin/setxkbmap Port: <Unknown> Host: C5.aardvark.com.au Source RPM Packages: xorg-x11-xkb-utils-1.0.2-2.1 Target RPM Packages: Policy RPM: selinux-policy-2.4.6-225.el5 Selinux Enabled: True Policy Type: targeted MLS Enabled: True Enforcing Mode: Permissive Plugin Name: home_tmp_bad_labels Host Name: C5.aardvark.com.au Platform: Linux C5.aardvark.com.au 2.6.18-128.4.1.el5 #1 SMP Tue Aug 4 20:19:25 EDT 2009 x86_64 x86_64 Alert Count: 35 First Seen: Sun Jan 11 17:55:13 2009 Last Seen: Mon Aug 10 18:13:16 2009 Local ID: 0950df01-cfad-420a-9e84-4996a8d31942 Line Numbers: Raw Audit Messages :
host=C5.aardvark.com.au type=AVC msg=audit(1249899196.898:16): avc: denied { search } for pid=4022 comm="setxkbmap" name=".X11-unix" dev=dm-0 ino=27590701 scontext=system_u:system_r:rhgb_t:s0 tcontext=system_u:object_r:initrc_tmp_t:s0 tclass=dir host=C5.aardvark.com.au type=AVC msg=audit(1249899196.898:16): avc: denied { search } for pid=4022 comm="setxkbmap" name=".X11-unix" dev=dm-0 ino=27590701 scontext=system_u:system_r:rhgb_t:s0 tcontext=system_u:object_r:initrc_tmp_t:s0 tclass=dir host=C5.aardvark.com.au type=SYSCALL msg=audit(1249899196.898:16): arch=c000003e syscall=42 success=no exit=-2 a0=3 a1=7fffd74235b0 a2=13 a3=8 items=0 ppid=1 pid=4022 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="setxkbmap" exe="/usr/bin/setxkbmap" subj=system_u:system_r:rhgb_t:s0 key=(null) host=C5.aardvark.com.au type=SYSCALL msg=audit(1249899196.898:16): arch=c000003e syscall=42 success=no exit=-2 a0=3 a1=7fffd74235b0 a2=13 a3=8 items=0 ppid=1 pid=4022 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="setxkbmap" exe="/usr/bin/setxkbmap" subj=system_u:system_r:rhgb_t:s0 key=(null)
Summary SELinux is preventing the setxkbmap from using potentially mislabeled files (./.X11-unix). Detailed Description [SELinux is in permissive mode, the operation would have been denied but was permitted due to permissive mode.]
SELinux has denied setxkbmap access to potentially mislabeled file(s) (./.X11-unix). This means that SELinux will not allow setxkbmap to use these files. It is common for users to edit files in their home directory or tmp directories and then move (mv) them to system directories. The problem is that the files end up with the wrong file context which confined applications are not allowed to access.
Allowing Access If you want setxkbmap to access this files, you need to relabel them using restorecon -v './.X11-unix'. You might want to relabel the entire directory using restorecon -R -v './.X11-unix'. Additional Information
Source Context: system_u:system_r:rhgb_t Target Context: system_u:object_r:initrc_tmp_t Target Objects: ./.X11-unix [ dir ] Source: setxkbmap Source Path: /usr/bin/setxkbmap Port: <Unknown> Host: C5.aardvark.com.au Source RPM Packages: xorg-x11-xkb-utils-1.0.2-2.1 Target RPM Packages: Policy RPM: selinux-policy-2.4.6-225.el5 Selinux Enabled: True Policy Type: targeted MLS Enabled: True Enforcing Mode: Permissive Plugin Name: home_tmp_bad_labels Host Name: C5.aardvark.com.au Platform: Linux C5.aardvark.com.au 2.6.18-128.4.1.el5 #1 SMP Tue Aug 4 20:19:25 EDT 2009 x86_64 x86_64 Alert Count: 36 First Seen: Sun Jan 11 17:55:13 2009 Last Seen: Mon Aug 10 18:13:17 2009 Local ID: 0950df01-cfad-420a-9e84-4996a8d31942 Line Numbers: Raw Audit Messages :
host=C5.aardvark.com.au type=AVC msg=audit(1249899197.933:18): avc: denied { search } for pid=4041 comm="setxkbmap" name=".X11-unix" dev=dm-0 ino=27590701 scontext=system_u:system_r:rhgb_t:s0 tcontext=system_u:object_r:initrc_tmp_t:s0 tclass=dir host=C5.aardvark.com.au type=AVC msg=audit(1249899197.933:18): avc: denied { search } for pid=4041 comm="setxkbmap" name=".X11-unix" dev=dm-0 ino=27590701 scontext=system_u:system_r:rhgb_t:s0 tcontext=system_u:object_r:initrc_tmp_t:s0 tclass=dir host=C5.aardvark.com.au type=SYSCALL msg=audit(1249899197.933:18): arch=c000003e syscall=42 success=no exit=-2 a0=3 a1=7fff31d13e20 a2=13 a3=8 items=0 ppid=1 pid=4041 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="setxkbmap" exe="/usr/bin/setxkbmap" subj=system_u:system_r:rhgb_t:s0 key=(null) host=C5.aardvark.com.au type=SYSCALL msg=audit(1249899197.933:18): arch=c000003e syscall=42 success=no exit=-2 a0=3 a1=7fff31d13e20 a2=13 a3=8 items=0 ppid=1 pid=4041 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="setxkbmap" exe="/usr/bin/setxkbmap" subj=system_u:system_r:rhgb_t:s0 key=(null)
Summary SELinux is preventing the setxkbmap from using potentially mislabeled files (./.X11-unix). Detailed Description [SELinux is in permissive mode, the operation would have been denied but was permitted due to permissive mode.]
SELinux has denied setxkbmap access to potentially mislabeled file(s) (./.X11-unix). This means that SELinux will not allow setxkbmap to use these files. It is common for users to edit files in their home directory or tmp directories and then move (mv) them to system directories. The problem is that the files end up with the wrong file context which confined applications are not allowed to access.
Allowing Access If you want setxkbmap to access this files, you need to relabel them using restorecon -v './.X11-unix'. You might want to relabel the entire directory using restorecon -R -v './.X11-unix'. Additional Information
Source Context: system_u:system_r:rhgb_t Target Context: system_u:object_r:initrc_tmp_t Target Objects: ./.X11-unix [ dir ] Source: setxkbmap Source Path: /usr/bin/setxkbmap Port: <Unknown> Host: C5.aardvark.com.au Source RPM Packages: xorg-x11-xkb-utils-1.0.2-2.1 Target RPM Packages: Policy RPM: selinux-policy-2.4.6-225.el5 Selinux Enabled: True Policy Type: targeted MLS Enabled: True Enforcing Mode: Permissive Plugin Name: home_tmp_bad_labels Host Name: C5.aardvark.com.au Platform: Linux C5.aardvark.com.au 2.6.18-128.4.1.el5 #1 SMP Tue Aug 4 20:19:25 EDT 2009 x86_64 x86_64 Alert Count: 37 First Seen: Sun Jan 11 17:55:13 2009 Last Seen: Mon Aug 10 18:13:19 2009 Local ID: 0950df01-cfad-420a-9e84-4996a8d31942 Line Numbers: Raw Audit Messages :
host=C5.aardvark.com.au type=AVC msg=audit(1249899199.903:20): avc: denied { search } for pid=4022 comm="setxkbmap" name=".X11-unix" dev=dm-0 ino=27590701 scontext=system_u:system_r:rhgb_t:s0 tcontext=system_u:object_r:initrc_tmp_t:s0 tclass=dir host=C5.aardvark.com.au type=AVC msg=audit(1249899199.903:20): avc: denied { search } for pid=4022 comm="setxkbmap" name=".X11-unix" dev=dm-0 ino=27590701 scontext=system_u:system_r:rhgb_t:s0 tcontext=system_u:object_r:initrc_tmp_t:s0 tclass=dir host=C5.aardvark.com.au type=SYSCALL msg=audit(1249899199.903:20): arch=c000003e syscall=42 success=no exit=-2 a0=3 a1=7fffd74235b0 a2=13 a3=8 items=0 ppid=1 pid=4022 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="setxkbmap" exe="/usr/bin/setxkbmap" subj=system_u:system_r:rhgb_t:s0 key=(null) host=C5.aardvark.com.au type=SYSCALL msg=audit(1249899199.903:20): arch=c000003e syscall=42 success=no exit=-2 a0=3 a1=7fffd74235b0 a2=13 a3=8 items=0 ppid=1 pid=4022 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="setxkbmap" exe="/usr/bin/setxkbmap" subj=system_u:system_r:rhgb_t:s0 key=(null)
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chcon -R -t xserver_tmp_t /tmp/.X11-unix
I always use tmpfs for /tmp, so I never end up with garbage on a reboot.
Thanks Daniel - but this is the response...
[root@C5 ~]# chcon -R -t xserver_tmp_t /tmp/.X11-unix chcon: failed to change context of /tmp/.X11-unix to system_u:object_r:xserver_t mp_t: Invalid argument chcon: failed to change context of /tmp/.X11-unix/X0 to system_u:object_r:xserve r_tmp_t: Invalid argument chcon: failed to change context of /tmp/.X11-unix/X1005 to user_u:object_r:xserv er_tmp_t: Invalid argument [root@C5 ~]#
Being pretty green - I don't really understand the problem here. Also - if this chcon worked - would this be a permanent solution - or does it need to be executed in a boot script? I like your idea of using tmpfs - but is it ever a problem that tmpfs is relatively small and finite? Also - please excuse my ignorance - but how do I make tmpfs the tmp folder?
Richard.