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Remove crypto/tls dependency

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It appears that when we import github.com/coreos/go-systemd/activation,
it brings in the whole crypto/tls package (which is not used by runc
directly or indirectly), making the runc binary size larger and
potentially creating issues with FIPS compliance.

Let's copy the code of function we use from go-systemd/activation
to avoid that.

The space savings are:

$ size runc.before runc.after
   text	   data	    bss	    dec	    hex	filename
7101084	5049593	 271560	12422237	 bd8c5d	runc.before
6508796	4623281	 229128	11361205	 ad5bb5	runc.after

Reported-by: Dimitri John Ledkov <dimitri.ledkov@surgut.co.uk>
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
This commit is contained in:
Kir Kolyshkin
2025-12-05 14:14:04 -08:00
parent e0adafb4ca
commit ba9e60f7a8
6 changed files with 6 additions and 165 deletions
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utils_linux.go
+1 -1
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@@ -9,7 +9,6 @@ import (
"path/filepath"
"strconv"
"github.com/coreos/go-systemd/v22/activation"
"github.com/opencontainers/runtime-spec/specs-go"
selinux "github.com/opencontainers/selinux/go-selinux"
"github.com/sirupsen/logrus"
@@ -17,6 +16,7 @@ import (
"golang.org/x/sys/unix"
"github.com/opencontainers/runc/internal/pathrs"
"github.com/opencontainers/runc/internal/third_party/systemd/activation"
"github.com/opencontainers/runc/libcontainer"
"github.com/opencontainers/runc/libcontainer/configs"
"github.com/opencontainers/runc/libcontainer/specconv"