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-rw-r--r--runsc/fsgofer/filter/config.go17
-rw-r--r--runsc/fsgofer/filter/config_amd64.go18
-rw-r--r--runsc/fsgofer/filter/config_arm64.go21
3 files changed, 42 insertions, 14 deletions
diff --git a/runsc/fsgofer/filter/config.go b/runsc/fsgofer/filter/config.go
index 0cb9b1cae..39b8a0b1e 100644
--- a/runsc/fsgofer/filter/config.go
+++ b/runsc/fsgofer/filter/config.go
@@ -27,20 +27,9 @@ import (
var allowedSyscalls = seccomp.SyscallRules{
syscall.SYS_ACCEPT: {},
syscall.SYS_CLOCK_GETTIME: {},
- syscall.SYS_CLONE: []seccomp.Rule{
- {
- seccomp.EqualTo(
- syscall.CLONE_VM |
- syscall.CLONE_FS |
- syscall.CLONE_FILES |
- syscall.CLONE_SIGHAND |
- syscall.CLONE_SYSVSEM |
- syscall.CLONE_THREAD),
- },
- },
- syscall.SYS_CLOSE: {},
- syscall.SYS_DUP: {},
- syscall.SYS_EPOLL_CTL: {},
+ syscall.SYS_CLOSE: {},
+ syscall.SYS_DUP: {},
+ syscall.SYS_EPOLL_CTL: {},
syscall.SYS_EPOLL_PWAIT: []seccomp.Rule{
{
seccomp.MatchAny{},
diff --git a/runsc/fsgofer/filter/config_amd64.go b/runsc/fsgofer/filter/config_amd64.go
index 39f9851a8..57b741a5c 100644
--- a/runsc/fsgofer/filter/config_amd64.go
+++ b/runsc/fsgofer/filter/config_amd64.go
@@ -28,5 +28,23 @@ func init() {
{seccomp.EqualTo(linux.ARCH_SET_FS)},
}
+ allowedSyscalls[syscall.SYS_CLONE] = []seccomp.Rule{
+ // parent_tidptr and child_tidptr are always 0 because neither
+ // CLONE_PARENT_SETTID nor CLONE_CHILD_SETTID are used.
+ {
+ seccomp.EqualTo(
+ syscall.CLONE_VM |
+ syscall.CLONE_FS |
+ syscall.CLONE_FILES |
+ syscall.CLONE_SIGHAND |
+ syscall.CLONE_SYSVSEM |
+ syscall.CLONE_THREAD),
+ seccomp.MatchAny{}, // newsp
+ seccomp.EqualTo(0), // parent_tidptr
+ seccomp.EqualTo(0), // child_tidptr
+ seccomp.MatchAny{}, // tls
+ },
+ }
+
allowedSyscalls[syscall.SYS_NEWFSTATAT] = []seccomp.Rule{}
}
diff --git a/runsc/fsgofer/filter/config_arm64.go b/runsc/fsgofer/filter/config_arm64.go
index d2697deb7..ff0cf77a0 100644
--- a/runsc/fsgofer/filter/config_arm64.go
+++ b/runsc/fsgofer/filter/config_arm64.go
@@ -23,5 +23,26 @@ import (
)
func init() {
+ allowedSyscalls[syscall.SYS_CLONE] = []seccomp.Rule{
+ // parent_tidptr and child_tidptr are always 0 because neither
+ // CLONE_PARENT_SETTID nor CLONE_CHILD_SETTID are used.
+ {
+ seccomp.EqualTo(
+ syscall.CLONE_VM |
+ syscall.CLONE_FS |
+ syscall.CLONE_FILES |
+ syscall.CLONE_SIGHAND |
+ syscall.CLONE_SYSVSEM |
+ syscall.CLONE_THREAD),
+ seccomp.MatchAny{}, // newsp
+ // These arguments are left uninitialized by the Go
+ // runtime, so they may be anything (and are unused by
+ // the host).
+ seccomp.MatchAny{}, // parent_tidptr
+ seccomp.MatchAny{}, // tls
+ seccomp.MatchAny{}, // child_tidptr
+ },
+ }
+
allowedSyscalls[syscall.SYS_FSTATAT] = []seccomp.Rule{}
}