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| author | Djalal Harouni <tixxdz@opendz.org> | 2016-10-12 13:31:21 +0200 |
|---|---|---|
| committer | Djalal Harouni <tixxdz@opendz.org> | 2016-10-12 13:31:21 +0200 |
| commit | 502d704e5ed2d288069471f4e3611115cde107d6 (patch) | |
| tree | 4f477c49d4ce8b979479735bcc4f4043b2df111b /src/core/unit.c | |
| parent | 18e51a022c632344c4a48ba6ccb3475fad2a2c3b (diff) | |
core:sandbox: Add ProtectKernelModules= option
This is useful to turn off explicit module load and unload operations on modular
kernels. This option removes CAP_SYS_MODULE from the capability bounding set for
the unit, and installs a system call filter to block module system calls.
This option will not prevent the kernel from loading modules using the module
auto-load feature which is a system wide operation.
Diffstat (limited to 'src/core/unit.c')
| -rw-r--r-- | src/core/unit.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/core/unit.c b/src/core/unit.c index 690f7f7dd9..71f95c0b96 100644 --- a/src/core/unit.c +++ b/src/core/unit.c @@ -3401,6 +3401,9 @@ int unit_patch_contexts(Unit *u) { if (ec->private_devices) ec->capability_bounding_set &= ~(UINT64_C(1) << CAP_MKNOD); + if (ec->protect_kernel_modules) + ec->capability_bounding_set &= ~(UINT64_C(1) << CAP_SYS_MODULE); + if (ec->dynamic_user) { if (!ec->user) { r = user_from_unit_name(u, &ec->user); |