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From 386542e6d50eeaa68aa91f821c0725ddd0ab9b2a Mon Sep 17 00:00:00 2001
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From: Vit Mojzis <vmojzis@redhat.com>
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Date: Tue, 18 May 2021 12:23:15 +0200
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Subject: [PATCH] selinux: Fix issues reported by SELint
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Style guide [1] issues only. No impact on policy functionality.
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[1] - https://github.com/TresysTechnology/refpolicy/wiki/StyleGuide
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---
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unix/vncserver/selinux/vncsession.te | 7 +++----
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1 file changed, 3 insertions(+), 4 deletions(-)
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diff --git a/unix/vncserver/selinux/vncsession.te b/unix/vncserver/selinux/vncsession.te
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index a773fed39..63ad8a85f 100644
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--- a/unix/vncserver/selinux/vncsession.te
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+++ b/unix/vncserver/selinux/vncsession.te
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@@ -17,7 +17,7 @@
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# USA.
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#
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-policy_module(vncsession, 1.0.0);
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+policy_module(vncsession, 1.0.0)
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gen_require(`
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attribute userdomain;
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@@ -42,8 +42,8 @@ can_exec(vnc_session_t, vnc_session_exec_t)
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userdom_spec_domtrans_all_users(vnc_session_t)
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userdom_signal_all_users(vnc_session_t)
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-allow vnc_session_t self:capability { kill chown dac_override dac_read_search fowner setgid setuid sys_resource };
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-allow vnc_session_t self:process { getcap setsched setexec setrlimit };
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+allow vnc_session_t self:capability { chown dac_override dac_read_search fowner kill setgid setuid sys_resource };
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+allow vnc_session_t self:process { getcap setexec setrlimit setsched };
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allow vnc_session_t self:fifo_file rw_fifo_file_perms;
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manage_files_pattern(vnc_session_t, xdm_home_t, xdm_home_t)
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@@ -65,4 +65,3 @@ logging_append_all_logs(vnc_session_t)
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mcs_process_set_categories(vnc_session_t)
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mcs_killall(vnc_session_t)
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-
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From 23cf514ac265a02dc666e8651dcc579022f0da77 Mon Sep 17 00:00:00 2001
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From: Zdenek Pytela <zpytela@redhat.com>
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Date: Tue, 18 May 2021 13:31:53 +0200
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Subject: [PATCH] selinux: further style and comprehensibility improvements
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Sections and rules blocks reordered according to the Style guide.
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https://github.com/TresysTechnology/refpolicy/wiki/StyleGuide
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---
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unix/vncserver/selinux/vncsession.te | 59 +++++++++++++++++-----------
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1 file changed, 36 insertions(+), 23 deletions(-)
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diff --git a/unix/vncserver/selinux/vncsession.te b/unix/vncserver/selinux/vncsession.te
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index 63ad8a85f..86fd6e5ef 100644
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--- a/unix/vncserver/selinux/vncsession.te
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+++ b/unix/vncserver/selinux/vncsession.te
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@@ -20,48 +20,61 @@
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policy_module(vncsession, 1.0.0)
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gen_require(`
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- attribute userdomain;
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- type xdm_home_t;
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+ attribute userdomain;
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+ type xdm_home_t;
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')
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-type vnc_session_exec_t;
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-corecmd_executable_file(vnc_session_exec_t)
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type vnc_session_t;
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+type vnc_session_exec_t;
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init_daemon_domain(vnc_session_t, vnc_session_exec_t)
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-auth_login_pgm_domain(vnc_session_t)
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+can_exec(vnc_session_t, vnc_session_exec_t)
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type vnc_session_var_run_t;
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files_pid_file(vnc_session_var_run_t)
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-allow vnc_session_t vnc_session_var_run_t:file manage_file_perms;
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-files_pid_filetrans(vnc_session_t, vnc_session_var_run_t, file)
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-
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-auth_write_login_records(vnc_session_t)
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-
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-can_exec(vnc_session_t, vnc_session_exec_t)
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-
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-userdom_spec_domtrans_all_users(vnc_session_t)
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-userdom_signal_all_users(vnc_session_t)
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allow vnc_session_t self:capability { chown dac_override dac_read_search fowner kill setgid setuid sys_resource };
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allow vnc_session_t self:process { getcap setexec setrlimit setsched };
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allow vnc_session_t self:fifo_file rw_fifo_file_perms;
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+allow vnc_session_t vnc_session_var_run_t:file manage_file_perms;
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+files_pid_filetrans(vnc_session_t, vnc_session_var_run_t, file)
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+
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manage_files_pattern(vnc_session_t, xdm_home_t, xdm_home_t)
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manage_fifo_files_pattern(vnc_session_t, xdm_home_t, xdm_home_t)
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manage_sock_files_pattern(vnc_session_t, xdm_home_t, xdm_home_t)
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manage_lnk_files_pattern(vnc_session_t, xdm_home_t, xdm_home_t)
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-userdom_user_home_dir_filetrans(vnc_session_t, xdm_home_t, dir, ".vnc")
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-userdom_admin_home_dir_filetrans(vnc_session_t, xdm_home_t, dir, ".vnc")
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-
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-# This also affects other tools, e.g. vncpasswd
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-userdom_admin_home_dir_filetrans(userdomain, xdm_home_t, dir, ".vnc")
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-userdom_user_home_dir_filetrans(userdomain, xdm_home_t, dir, ".vnc")
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-
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-miscfiles_read_localization(vnc_session_t)
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kernel_read_kernel_sysctls(vnc_session_t)
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-logging_append_all_logs(vnc_session_t)
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+corecmd_executable_file(vnc_session_exec_t)
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mcs_process_set_categories(vnc_session_t)
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mcs_killall(vnc_session_t)
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+
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+optional_policy(`
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+ auth_login_pgm_domain(vnc_session_t)
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+ auth_write_login_records(vnc_session_t)
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+')
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+
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+optional_policy(`
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+ logging_append_all_logs(vnc_session_t)
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+')
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+
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+optional_policy(`
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+ miscfiles_read_localization(vnc_session_t)
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+')
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+
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+optional_policy(`
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+ userdom_spec_domtrans_all_users(vnc_session_t)
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+ userdom_signal_all_users(vnc_session_t)
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+
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+ userdom_user_home_dir_filetrans(vnc_session_t, xdm_home_t, dir, ".vnc")
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+ userdom_admin_home_dir_filetrans(vnc_session_t, xdm_home_t, dir, ".vnc")
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+
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+ # This also affects other tools, e.g. vncpasswd
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+ gen_require(`
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+ attribute userdomain;
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+ ')
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+ userdom_admin_home_dir_filetrans(userdomain, xdm_home_t, dir, ".vnc")
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+ userdom_user_home_dir_filetrans(userdomain, xdm_home_t, dir, ".vnc")
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+')
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From 3c8622691abfb377b48bf3749dd629c5a7120cf4 Mon Sep 17 00:00:00 2001
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From: Zdenek Pytela <zpytela@redhat.com>
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Date: Tue, 18 May 2021 13:39:11 +0200
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Subject: [PATCH] Allow vnc_session_t manage nfs dirs and files conditionally
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The permissions set to manage directories and files with the nfs_t type
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is allowed when the use_nfs_home_dirs boolean is turned on.
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Resolves: https://github.com/TigerVNC/tigervnc/issues/1189
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---
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unix/vncserver/selinux/vncsession.te | 5 +++++
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1 file changed, 5 insertions(+)
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diff --git a/unix/vncserver/selinux/vncsession.te b/unix/vncserver/selinux/vncsession.te
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index 86fd6e5ef..46e699117 100644
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--- a/unix/vncserver/selinux/vncsession.te
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+++ b/unix/vncserver/selinux/vncsession.te
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@@ -51,6 +51,11 @@ corecmd_executable_file(vnc_session_exec_t)
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mcs_process_set_categories(vnc_session_t)
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mcs_killall(vnc_session_t)
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+tunable_policy(`use_nfs_home_dirs',`
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+ fs_manage_nfs_dirs(vnc_session_t)
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+ fs_manage_nfs_files(vnc_session_t)
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+')
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+
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optional_policy(`
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auth_login_pgm_domain(vnc_session_t)
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auth_write_login_records(vnc_session_t)
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diff --git a/unix/vncserver/selinux/vncsession.te b/unix/vncserver/selinux/vncsession.te
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index 46e69911..f1108ec8 100644
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--- a/unix/vncserver/selinux/vncsession.te
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+++ b/unix/vncserver/selinux/vncsession.te
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@@ -20,7 +20,6 @@
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policy_module(vncsession, 1.0.0)
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gen_require(`
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- attribute userdomain;
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type xdm_home_t;
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')
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