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init: attempt to port boolean init_create_mountpoints #2073

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init: attempt to port boolean init_create_mountpoints #2073

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58 changes: 58 additions & 0 deletions policy/modules/kernel/files.if
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Original file line number Diff line number Diff line change
Expand Up @@ -853,6 +853,24 @@ interface(`files_search_non_security_dirs',`
allow $1 non_security_file_type:dir search_dir_perms;
')

########################################
## <summary>
## Create non-security directories.
## </summary>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
#
interface(`files_create_non_security_dirs',`
gen_require(`
attribute non_security_file_type;
')

create_dirs_pattern($1, non_security_file_type, non_security_file_type)
')

########################################
## <summary>
## Get the attributes of all files.
Expand Down Expand Up @@ -1275,6 +1293,46 @@ interface(`files_relabel_non_security_files',`
seutil_relabelto_bin_policy($1)
')

########################################
## <summary>
## Write all non-security files.
## </summary>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
## <rolecap/>
#
interface(`files_write_non_security_files',`
gen_require(`
attribute non_security_file_type;
')

write_files_pattern($1, non_security_file_type, non_security_file_type)
read_lnk_files_pattern($1, non_security_file_type, non_security_file_type)
')

########################################
## <summary>
## Create all non-security files.
## </summary>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
## <rolecap/>
#
interface(`files_create_non_security_files',`
gen_require(`
attribute non_security_file_type;
')

create_files_pattern($1, non_security_file_type, non_security_file_type)
read_lnk_files_pattern($1, non_security_file_type, non_security_file_type)
')

########################################
## <summary>
## Search all base file dirs.
Expand Down
36 changes: 36 additions & 0 deletions policy/modules/kernel/kernel.if
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Expand Up @@ -1816,6 +1816,42 @@ interface(`kernel_dontaudit_list_all_proc',`
dontaudit $1 proc_type:file getattr;
')

########################################
## <summary>
## Write systemd mountpoint files except proc entries.
## </summary>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
#
interface(`kernel_write_non_proc_init_mountpoint_files',`
gen_require(`
attribute proc_type;
')

init_write_mountpoint_files($1, -proc_type)
')

########################################
## <summary>
## Create systemd mountpoint files except proc entries.
## </summary>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
#
interface(`kernel_create_non_proc_init_mountpoint_files',`
gen_require(`
attribute proc_type;
')

init_create_mountpoint_files($1, -proc_type)
')

########################################
## <summary>
## Allow attempts to read all proc types.
Expand Down
48 changes: 48 additions & 0 deletions policy/modules/system/init.if
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Original file line number Diff line number Diff line change
Expand Up @@ -816,6 +816,54 @@ interface(`init_named_socket_activation',`
files_pid_filetrans(init_t, $2, { dir lnk_file sock_file fifo_file }, $3)
')

########################################
## <summary>
## Write systemd mountpoint files.
## </summary>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
## <param name="exception_types" optional="true">
## <summary>
## The types to be excluded. Each type or attribute
## must be negated by the caller.
## </summary>
## </param>
#
interface(`init_write_mountpoint_files',`
gen_require(`
attribute init_mountpoint_type;
')

allow $1 { init_mountpoint_type $2 }:file write_file_perms;
')

########################################
## <summary>
## Create systemd mountpoint files.
## </summary>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
## <param name="exception_types" optional="true">
## <summary>
## The types to be excluded. Each type or attribute
## must be negated by the caller.
## </summary>
## </param>
#
interface(`init_create_mountpoint_files',`
gen_require(`
attribute init_mountpoint_type;
')

allow $1 { init_mountpoint_type $2 }:file create_file_perms;
')

########################################
## <summary>
## Connect to init with a unix socket.
Expand Down
23 changes: 23 additions & 0 deletions policy/modules/system/init.te
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Original file line number Diff line number Diff line change
Expand Up @@ -51,6 +51,13 @@ gen_tunable(daemons_enable_cluster_mode, false)
## </desc>
gen_tunable(init_create_dirs, true)

## <desc>
## <p>
## Enable systemd to create mountpoints.
## </p>
## </desc>
gen_tunable(init_create_mountpoints, false)

## <desc>
## <p>
## Allow init audit_control capability
Expand Down Expand Up @@ -584,6 +591,22 @@ tunable_policy(`init_create_dirs',`
files_setattr_non_security_dirs(init_t)
')

tunable_policy(`init_create_mountpoints',`
allow init_t init_mountpoint_type:dir { create_dir_perms add_entry_dir_perms };
allow init_t init_mountpoint_type:fifo_file create_fifo_file_perms;
allow init_t init_mountpoint_type:sock_file create_sock_file_perms;
allow init_t init_mountpoint_type:lnk_file create_lnk_file_perms;

kernel_write_non_proc_init_mountpoint_files(init_t)
kernel_create_non_proc_init_mountpoint_files(init_t)
')

tunable_policy(`init_create_mountpoints && init_create_dirs',`
files_create_non_security_dirs(init_t)
files_create_non_security_files(init_t)
files_write_non_security_files(init_t)
')

tunable_policy(`init_audit_control',`
allow init_t self:capability audit_control;
')
Expand Down