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Allow kernel_t to manage and relabel all files #1893

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merged 2 commits into from
Oct 6, 2023
Merged

Allow kernel_t to manage and relabel all files #1893

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0366c6e
Add missing optional_policy() to files_relabel_all_files()
WOnder93 Oct 6, 2023
2f17241
Allow kernel_t to manage and relabel all files
WOnder93 Oct 6, 2023
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46 changes: 44 additions & 2 deletions policy/modules/kernel/files.if
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Original file line number Diff line number Diff line change
Expand Up @@ -1765,8 +1765,12 @@ interface(`files_relabel_all_files',`
relabel_chr_files_pattern($1, { file_type $2 }, { file_type $2 })

# satisfy the assertions:
seutil_relabelto_bin_policy($1)
auth_relabelto_shadow($1)
optional_policy(`
seutil_relabelto_bin_policy($1)
')
optional_policy(`
auth_relabelto_shadow($1)
')
')

########################################
Expand Down Expand Up @@ -1835,6 +1839,44 @@ interface(`files_manage_all_files',`
')
')

########################################
## <summary>
## Manage all block device files on the filesystem.
## </summary>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
## <rolecap/>
#
interface(`files_manage_all_blk_files',`
gen_require(`
attribute file_type;
')

manage_blk_files_pattern($1, file_type, file_type)
')

########################################
## <summary>
## Manage all character device files on the filesystem.
## </summary>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
## <rolecap/>
#
interface(`files_manage_all_chr_files',`
gen_require(`
attribute file_type;
')

manage_chr_files_pattern($1, file_type, file_type)
')

########################################
## <summary>
## Grant execute access to all files on the filesystem,
Expand Down
3 changes: 3 additions & 0 deletions policy/modules/kernel/kernel.te
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Original file line number Diff line number Diff line change
Expand Up @@ -385,6 +385,9 @@ domain_rw_all_sockets(kernel_t)
domain_obj_id_change_exemption(kernel_t)

files_manage_all_files(kernel_t)
files_manage_all_blk_files(kernel_t)
files_manage_all_chr_files(kernel_t)
files_relabel_all_files(kernel_t)
# The 'execute' permission on lower inodes is checked against the mounter
# cred by overlayfs, so we need to grant it to allow overlay mounts created
# during early boot to work.
Expand Down