tree-wide: rewrite ioutil functions to their replacements
The ioutil package has been deprecated in Go 1.16 [1]. This CL removes
all our own users of that package and rewrites them to use their
replacements in the os package. I initially wanted to do this with a
gofix but because all replacements were signature-compatible I just
did it with a few string replaces and then ran goimports to fix up the
imports.
I intentionally didn't rewrite the patches as that would require a
different process and is IMO of less value.
[1] https://github.com/golang/go/issues/42026
Change-Id: Iac6663a1f1ee49f9b1c6e4b3d97e73f2c3b54a13
Reviewed-on: https://review.monogon.dev/c/monogon/+/449
Reviewed-by: Sergiusz Bazanski <serge@monogon.tech>
diff --git a/metropolis/node/core/mounts.go b/metropolis/node/core/mounts.go
index bb98462..a54331d 100644
--- a/metropolis/node/core/mounts.go
+++ b/metropolis/node/core/mounts.go
@@ -18,7 +18,6 @@
import (
"fmt"
- "io/ioutil"
"os"
"strings"
@@ -57,7 +56,7 @@
if err := unix.Mount("tmpfs", "/sys/fs/cgroup", "tmpfs", unix.MS_NOEXEC|unix.MS_NOSUID|unix.MS_NODEV, ""); err != nil {
panic(err)
}
- cgroupsRaw, err := ioutil.ReadFile("/proc/cgroups")
+ cgroupsRaw, err := os.ReadFile("/proc/cgroups")
if err != nil {
panic(err)
}