138 lines
7.4 KiB
Go
138 lines
7.4 KiB
Go
package sandbox_test
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import (
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"encoding/json"
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"os"
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"path"
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"testing"
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"git.gensokyo.uk/security/fortify/test/sandbox"
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)
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func TestMounts(t *testing.T) {
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testCases := []struct {
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name string
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sample string
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want []sandbox.Mntent
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}{
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{"fpkg", `tmpfs / tmpfs rw,nosuid,nodev,relatime,uid=1000002,gid=1000002 0 0
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proc /proc proc rw,nosuid,nodev,noexec,relatime 0 0
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tmpfs /.fortify tmpfs rw,nosuid,nodev,relatime,size=4k,mode=755,uid=1000002,gid=1000002 0 0
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tmpfs /dev tmpfs rw,nosuid,nodev,relatime,mode=755,uid=1000002,gid=1000002 0 0
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devtmpfs /dev/null devtmpfs rw,nosuid,size=49396k,nr_inodes=121247,mode=755 0 0
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devtmpfs /dev/zero devtmpfs rw,nosuid,size=49396k,nr_inodes=121247,mode=755 0 0
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devtmpfs /dev/full devtmpfs rw,nosuid,size=49396k,nr_inodes=121247,mode=755 0 0
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devtmpfs /dev/random devtmpfs rw,nosuid,size=49396k,nr_inodes=121247,mode=755 0 0
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devtmpfs /dev/urandom devtmpfs rw,nosuid,size=49396k,nr_inodes=121247,mode=755 0 0
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devtmpfs /dev/tty devtmpfs rw,nosuid,size=49396k,nr_inodes=121247,mode=755 0 0
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devpts /dev/pts devpts rw,nosuid,noexec,relatime,mode=620,ptmxmode=666 0 0
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mqueue /dev/mqueue mqueue rw,relatime 0 0
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/dev/disk/by-label/nixos /nix/store ext4 ro,nosuid,nodev,relatime 0 0
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/dev/disk/by-label/nixos /.fortify/app ext4 ro,nosuid,nodev,relatime 0 0
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/dev/disk/by-label/nixos /etc/resolv.conf ext4 ro,nosuid,nodev,relatime 0 0
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sysfs /sys/block sysfs ro,nosuid,nodev,noexec,relatime 0 0
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sysfs /sys/bus sysfs ro,nosuid,nodev,noexec,relatime 0 0
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sysfs /sys/class sysfs ro,nosuid,nodev,noexec,relatime 0 0
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sysfs /sys/dev sysfs ro,nosuid,nodev,noexec,relatime 0 0
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sysfs /sys/devices sysfs ro,nosuid,nodev,noexec,relatime 0 0
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/dev/disk/by-label/nixos /.fortify/nixGL ext4 ro,nosuid,nodev,relatime 0 0
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devtmpfs /dev/dri devtmpfs rw,nosuid,size=49396k,nr_inodes=121247,mode=755 0 0
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/dev/disk/by-label/nixos /.fortify/etc ext4 ro,nosuid,nodev,relatime 0 0
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tmpfs /run/user tmpfs rw,nosuid,nodev,relatime,size=1024k,mode=755,uid=1000002,gid=1000002 0 0
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tmpfs /run/user/65534 tmpfs rw,nosuid,nodev,relatime,size=8192k,mode=755,uid=1000002,gid=1000002 0 0
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/dev/disk/by-label/nixos /tmp ext4 rw,nosuid,nodev,relatime 0 0
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/dev/disk/by-label/nixos /data/data/org.codeberg.dnkl.foot ext4 rw,nosuid,nodev,relatime 0 0
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tmpfs /etc/passwd tmpfs ro,nosuid,nodev,relatime,uid=1000002,gid=1000002 0 0
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tmpfs /etc/group tmpfs ro,nosuid,nodev,relatime,uid=1000002,gid=1000002 0 0
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/dev/disk/by-label/nixos /run/user/65534/wayland-0 ext4 ro,nosuid,nodev,relatime 0 0
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tmpfs /run/user/65534/pulse/native tmpfs ro,nosuid,nodev,relatime,size=98784k,nr_inodes=24696,mode=700,uid=1000,gid=100 0 0
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/dev/disk/by-label/nixos /run/user/65534/bus ext4 ro,nosuid,nodev,relatime 0 0
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overlay /.fortify/sbin/fortify overlay ro,nosuid,nodev,relatime,lowerdir=/mnt-root/nix/.ro-store,upperdir=/mnt-root/nix/.rw-store/upper,workdir=/mnt-root/nix/.rw-store/work,uuid=on 0 0
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`, []sandbox.Mntent{
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{"tmpfs", "/", "tmpfs", "rw,nosuid,nodev,relatime,uid=1000002,gid=1000002", 0, 0},
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{"proc", "/proc", "proc", "rw,nosuid,nodev,noexec,relatime", 0, 0},
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{"tmpfs", "/.fortify", "tmpfs", "rw,nosuid,nodev,relatime,size=4k,mode=755,uid=1000002,gid=1000002", 0, 0},
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{"tmpfs", "/dev", "tmpfs", "rw,nosuid,nodev,relatime,mode=755,uid=1000002,gid=1000002", 0, 0},
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{"devtmpfs", "/dev/null", "devtmpfs", "rw,nosuid,size=49396k,nr_inodes=121247,mode=755", 0, 0},
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{"devtmpfs", "/dev/zero", "devtmpfs", "rw,nosuid,size=49396k,nr_inodes=121247,mode=755", 0, 0},
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{"devtmpfs", "/dev/full", "devtmpfs", "rw,nosuid,size=49396k,nr_inodes=121247,mode=755", 0, 0},
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{"devtmpfs", "/dev/random", "devtmpfs", "rw,nosuid,size=49396k,nr_inodes=121247,mode=755", 0, 0},
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{"devtmpfs", "/dev/urandom", "devtmpfs", "rw,nosuid,size=49396k,nr_inodes=121247,mode=755", 0, 0},
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{"devtmpfs", "/dev/tty", "devtmpfs", "rw,nosuid,size=49396k,nr_inodes=121247,mode=755", 0, 0},
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{"devpts", "/dev/pts", "devpts", "rw,nosuid,noexec,relatime,mode=620,ptmxmode=666", 0, 0},
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{"mqueue", "/dev/mqueue", "mqueue", "rw,relatime", 0, 0},
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{"/dev/disk/by-label/nixos", "/nix/store", "ext4", "ro,nosuid,nodev,relatime", 0, 0},
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{"/dev/disk/by-label/nixos", "/.fortify/app", "ext4", "ro,nosuid,nodev,relatime", 0, 0},
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{"/dev/disk/by-label/nixos", "/etc/resolv.conf", "ext4", "ro,nosuid,nodev,relatime", 0, 0},
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{"sysfs", "/sys/block", "sysfs", "ro,nosuid,nodev,noexec,relatime", 0, 0},
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{"sysfs", "/sys/bus", "sysfs", "ro,nosuid,nodev,noexec,relatime", 0, 0},
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{"sysfs", "/sys/class", "sysfs", "ro,nosuid,nodev,noexec,relatime", 0, 0},
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{"sysfs", "/sys/dev", "sysfs", "ro,nosuid,nodev,noexec,relatime", 0, 0},
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{"sysfs", "/sys/devices", "sysfs", "ro,nosuid,nodev,noexec,relatime", 0, 0},
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{"/dev/disk/by-label/nixos", "/.fortify/nixGL", "ext4", "ro,nosuid,nodev,relatime", 0, 0},
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{"devtmpfs", "/dev/dri", "devtmpfs", "rw,nosuid,size=49396k,nr_inodes=121247,mode=755", 0, 0},
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{"/dev/disk/by-label/nixos", "/.fortify/etc", "ext4", "ro,nosuid,nodev,relatime", 0, 0},
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{"tmpfs", "/run/user", "tmpfs", "rw,nosuid,nodev,relatime,size=1024k,mode=755,uid=1000002,gid=1000002", 0, 0},
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{"tmpfs", "/run/user/65534", "tmpfs", "rw,nosuid,nodev,relatime,size=8192k,mode=755,uid=1000002,gid=1000002", 0, 0},
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{"/dev/disk/by-label/nixos", "/tmp", "ext4", "rw,nosuid,nodev,relatime", 0, 0},
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{"/dev/disk/by-label/nixos", "/data/data/org.codeberg.dnkl.foot", "ext4", "rw,nosuid,nodev,relatime", 0, 0},
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{"tmpfs", "/etc/passwd", "tmpfs", "ro,nosuid,nodev,relatime,uid=1000002,gid=1000002", 0, 0},
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{"tmpfs", "/etc/group", "tmpfs", "ro,nosuid,nodev,relatime,uid=1000002,gid=1000002", 0, 0},
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{"/dev/disk/by-label/nixos", "/run/user/65534/wayland-0", "ext4", "ro,nosuid,nodev,relatime", 0, 0},
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{"tmpfs", "/run/user/65534/pulse/native", "tmpfs", "ro,nosuid,nodev,relatime,size=98784k,nr_inodes=24696,mode=700,uid=1000,gid=100", 0, 0},
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{"/dev/disk/by-label/nixos", "/run/user/65534/bus", "ext4", "ro,nosuid,nodev,relatime", 0, 0},
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{"overlay", "/.fortify/sbin/fortify", "overlay", "ro,nosuid,nodev,relatime,lowerdir=/mnt-root/nix/.ro-store,upperdir=/mnt-root/nix/.rw-store/upper,workdir=/mnt-root/nix/.rw-store/work,uuid=on", 0, 0},
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}},
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}
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for _, tc := range testCases {
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name := path.Join(t.TempDir(), "sample")
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if err := os.WriteFile(name, []byte(tc.sample), 0400); err != nil {
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t.Fatalf("cannot write sample: %v", err)
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}
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t.Run(tc.name, func(t *testing.T) {
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i := 0
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if err := sandbox.IterMounts(name, func(e *sandbox.Mntent) {
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if i == len(tc.want) {
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t.Errorf("IterMounts: got more than %d entries", i)
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t.FailNow()
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}
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if *e != tc.want[i] {
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t.Errorf("IterMounts: entry %d\n got: %s\nwant: %s", i,
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e, &tc.want[i])
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t.FailNow()
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}
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i++
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}); err != nil {
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t.Fatalf("IterMounts: error = %v", err)
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}
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})
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t.Run(tc.name+" assert", func(t *testing.T) {
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oldFatal := sandbox.SwapFatal(t.Fatalf)
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t.Cleanup(func() { sandbox.SwapFatal(oldFatal) })
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wantFile := path.Join(t.TempDir(), "want.json")
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if f, err := os.OpenFile(wantFile, os.O_CREATE|os.O_WRONLY, 0400); err != nil {
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t.Fatalf("cannot create %q: %v", wantFile, err)
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} else if err = json.NewEncoder(f).Encode(tc.want); err != nil {
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t.Fatalf("cannot encode to %q: %v", wantFile, err)
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} else if err = f.Close(); err != nil {
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t.Fatalf("cannot close %q: %v", wantFile, err)
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}
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sandbox.MustAssertMounts(name, name, wantFile)
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if err := os.Remove(wantFile); err != nil {
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t.Fatalf("cannot remove %q: %v", wantFile, err)
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}
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})
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if err := os.Remove(name); err != nil {
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t.Fatalf("cannot remove %q: %v", name, err)
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}
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}
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}
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