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-rw-r--r--vfs/mountinfo_test.go458
1 files changed, 458 insertions, 0 deletions
diff --git a/vfs/mountinfo_test.go b/vfs/mountinfo_test.go
new file mode 100644
index 00000000..2b6254c4
--- /dev/null
+++ b/vfs/mountinfo_test.go
@@ -0,0 +1,458 @@
+package vfs_test
+
+import (
+ "encoding/json"
+ "errors"
+ "iter"
+ "os"
+ "path"
+ "reflect"
+ "slices"
+ "strconv"
+ "strings"
+ "syscall"
+ "testing"
+
+ "hakurei.app/vfs"
+)
+
+func TestDecoderError(t *testing.T) {
+ t.Parallel()
+
+ testCases := []struct {
+ name string
+ err *vfs.DecoderError
+ want string
+ target error
+ targetF error
+ }{
+ {"errno", &vfs.DecoderError{Op: "parse", Line: 0xdead, Err: syscall.ENOTRECOVERABLE},
+ "parse mountinfo at line 57005: state not recoverable", syscall.ENOTRECOVERABLE, syscall.EROFS},
+
+ {"strconv", &vfs.DecoderError{Op: "parse", Line: 0xdead, Err: &strconv.NumError{Func: "Atoi", Num: "meow", Err: strconv.ErrSyntax}},
+ `parse mountinfo at line 57005: numeric field "meow" invalid syntax`, strconv.ErrSyntax, os.ErrInvalid},
+
+ {"unfold", &vfs.DecoderError{Op: "unfold", Line: -1, Err: vfs.UnfoldTargetError("/proc/nonexistent")},
+ "unfold mountinfo: mount point /proc/nonexistent never appeared in mountinfo", vfs.UnfoldTargetError("/proc/nonexistent"), os.ErrNotExist},
+ }
+ for _, tc := range testCases {
+ t.Run(tc.name, func(t *testing.T) {
+ t.Parallel()
+
+ t.Run("error", func(t *testing.T) {
+ t.Parallel()
+ if got := tc.err.Error(); got != tc.want {
+ t.Errorf("Error: %s, want %s", got, tc.want)
+ }
+ })
+
+ t.Run("is", func(t *testing.T) {
+ t.Parallel()
+ if !errors.Is(tc.err, tc.target) {
+ t.Errorf("Is: unexpected false")
+ }
+ if errors.Is(tc.err, tc.targetF) {
+ t.Errorf("Is: unexpected true")
+ }
+ })
+ })
+ }
+}
+
+func TestMountInfo(t *testing.T) {
+ t.Parallel()
+
+ testCases := []mountInfoTest{
+ {"count", sampleMountinfoBase + `
+21 20 0:53/ /mnt/test rw,relatime - tmpfs rw
+21 16 0:17 / /sys/fs/cgroup rw,nosuid,nodev,noexec,relatime - tmpfs tmpfs rw,mode=755`,
+ &vfs.DecoderError{Op: "parse", Line: 6, Err: vfs.ErrMountInfoFields},
+ "", nil, nil, nil},
+
+ {"sep", sampleMountinfoBase + `
+21 20 0:53 / /mnt/test rw,relatime shared:212 _ tmpfs rw
+21 16 0:17 / /sys/fs/cgroup rw,nosuid,nodev,noexec,relatime - tmpfs tmpfs rw,mode=755`,
+ &vfs.DecoderError{Op: "parse", Line: 6, Err: vfs.ErrMountInfoSep},
+ "", nil, nil, nil},
+
+ {"id", sampleMountinfoBase + `
+id 20 0:53 / /mnt/test rw,relatime shared:212 - tmpfs rw
+21 16 0:17 / /sys/fs/cgroup rw,nosuid,nodev,noexec,relatime - tmpfs tmpfs rw,mode=755`,
+ &vfs.DecoderError{Op: "parse", Line: 6, Err: &strconv.NumError{Func: "Atoi", Num: "id", Err: strconv.ErrSyntax}},
+ "", nil, nil, nil},
+
+ {"parent", sampleMountinfoBase + `
+21 parent 0:53 / /mnt/test rw,relatime shared:212 - tmpfs rw
+21 16 0:17 / /sys/fs/cgroup rw,nosuid,nodev,noexec,relatime - tmpfs tmpfs rw,mode=755`,
+ &vfs.DecoderError{Op: "parse", Line: 6, Err: &strconv.NumError{Func: "Atoi", Num: "parent", Err: strconv.ErrSyntax}}, "", nil, nil, nil},
+
+ {"devno", sampleMountinfoBase + `
+21 20 053 / /mnt/test rw,relatime shared:212 - tmpfs rw
+21 16 0:17 / /sys/fs/cgroup rw,nosuid,nodev,noexec,relatime - tmpfs tmpfs rw,mode=755`,
+ nil, "parse mountinfo at line 6: unexpected EOF", nil, nil, nil},
+
+ {"maj", sampleMountinfoBase + `
+21 20 maj:53 / /mnt/test rw,relatime shared:212 - tmpfs rw
+21 16 0:17 / /sys/fs/cgroup rw,nosuid,nodev,noexec,relatime - tmpfs tmpfs rw,mode=755`,
+ nil, "parse mountinfo at line 6: expected integer", nil, nil, nil},
+
+ {"min", sampleMountinfoBase + `
+21 20 0:min / /mnt/test rw,relatime shared:212 - tmpfs rw
+21 16 0:17 / /sys/fs/cgroup rw,nosuid,nodev,noexec,relatime - tmpfs tmpfs rw,mode=755`,
+ nil, "parse mountinfo at line 6: expected integer", nil, nil, nil},
+
+ {"mountroot", sampleMountinfoBase + `
+21 20 0:53 /mnt/test rw,relatime - tmpfs rw
+21 16 0:17 / /sys/fs/cgroup rw,nosuid,nodev,noexec,relatime - tmpfs tmpfs rw,mode=755`,
+ &vfs.DecoderError{Op: "parse", Line: 6, Err: vfs.ErrMountInfoEmpty}, "", nil, nil, nil},
+
+ {"target", sampleMountinfoBase + `
+21 20 0:53 / rw,relatime - tmpfs rw
+21 16 0:17 / /sys/fs/cgroup rw,nosuid,nodev,noexec,relatime - tmpfs tmpfs rw,mode=755`,
+ &vfs.DecoderError{Op: "parse", Line: 6, Err: vfs.ErrMountInfoEmpty}, "", nil, nil, nil},
+
+ {"vfs options", sampleMountinfoBase + `
+21 20 0:53 / /mnt/test - tmpfs rw
+21 16 0:17 / /sys/fs/cgroup rw,nosuid,nodev,noexec,relatime - tmpfs tmpfs rw,mode=755`,
+ &vfs.DecoderError{Op: "parse", Line: 6, Err: vfs.ErrMountInfoEmpty}, "", nil, nil, nil},
+
+ {"FS type", sampleMountinfoBase + `
+21 16 0:17 / /sys/fs/cgroup rw,nosuid,nodev,noexec,relatime - tmpfs tmpfs rw,mode=755
+21 20 0:53 / /mnt/test rw,relatime - rw`,
+ &vfs.DecoderError{Op: "parse", Line: 7, Err: vfs.ErrMountInfoEmpty}, "", nil, nil, nil},
+
+ {"base", sampleMountinfoBase, nil, "", []*wantMountInfo{
+ m(15, 20, 0, 3, "/", "/proc", "rw,relatime", o(), "proc", "/proc", "rw", syscall.MS_RELATIME, nil),
+ m(16, 20, 0, 15, "/", "/sys", "rw,relatime", o(), "sysfs", "/sys", "rw", syscall.MS_RELATIME, nil),
+ m(17, 20, 0, 5, "/", "/dev", "rw,relatime", o(), "devtmpfs", "udev", "rw,size=1983516k,nr_inodes=495879,mode=755", syscall.MS_RELATIME, nil),
+ m(18, 17, 0, 10, "/", "/dev/pts", "rw,relatime", o(), "devpts", "devpts", "rw,gid=5,mode=620,ptmxmode=000", syscall.MS_RELATIME, nil),
+ m(19, 17, 0, 16, "/", "/dev/shm", "rw,relatime", o(), "tmpfs", "tmpfs", "rw", syscall.MS_RELATIME, nil),
+ m(20, 1, 8, 4, "/", "/", "ro,noatime,nodiratime,meow", o(), "ext3", "/dev/sda4", "rw,errors=continue,user_xattr,acl,barrier=0,data=ordered", syscall.MS_RDONLY|syscall.MS_NOATIME|syscall.MS_NODIRATIME, []string{"meow"}),
+ },
+ mn(20, 1, 8, 4, "/", "/", "ro,noatime,nodiratime,meow", o(), "ext3", "/dev/sda4", "rw,errors=continue,user_xattr,acl,barrier=0,data=ordered", false,
+ mn(15, 20, 0, 3, "/", "/proc", "rw,relatime", o(), "proc", "/proc", "rw", false, nil,
+ mn(16, 20, 0, 15, "/", "/sys", "rw,relatime", o(), "sysfs", "/sys", "rw", false, nil,
+ mn(17, 20, 0, 5, "/", "/dev", "rw,relatime", o(), "devtmpfs", "udev", "rw,size=1983516k,nr_inodes=495879,mode=755", false,
+ mn(18, 17, 0, 10, "/", "/dev/pts", "rw,relatime", o(), "devpts", "devpts", "rw,gid=5,mode=620,ptmxmode=000", false, nil,
+ mn(19, 17, 0, 16, "/", "/dev/shm", "rw,relatime", o(), "tmpfs", "tmpfs", "rw", false, nil, nil)),
+ nil))), nil), func(n *vfs.MountInfoNode) []*vfs.MountInfoNode {
+ return []*vfs.MountInfoNode{
+ n,
+ n.FirstChild,
+ n.FirstChild.NextSibling,
+ n.FirstChild.NextSibling.NextSibling,
+ n.FirstChild.NextSibling.NextSibling.FirstChild,
+ n.FirstChild.NextSibling.NextSibling.FirstChild.NextSibling,
+ }
+ }},
+
+ {"sample", sampleMountinfo, nil, "", []*wantMountInfo{
+ m(15, 20, 0, 3, "/", "/proc", "rw,relatime", o(), "proc", "/proc", "rw", syscall.MS_RELATIME, nil),
+ m(16, 20, 0, 15, "/", "/sys", "rw,relatime", o(), "sysfs", "/sys", "rw", syscall.MS_RELATIME, nil),
+ m(17, 20, 0, 5, "/", "/dev", "rw,relatime", o(), "devtmpfs", "udev", "rw,size=1983516k,nr_inodes=495879,mode=755", syscall.MS_RELATIME, nil),
+ m(18, 17, 0, 10, "/", "/dev/pts", "rw,relatime", o(), "devpts", "devpts", "rw,gid=5,mode=620,ptmxmode=000", syscall.MS_RELATIME, nil),
+ m(19, 17, 0, 16, "/", "/dev/shm", "rw,relatime", o(), "tmpfs", "tmpfs", "rw", syscall.MS_RELATIME, nil),
+ m(20, 1, 8, 4, "/", "/", "rw,noatime", o(), "ext3", "/dev/sda4", "rw,errors=continue,user_xattr,acl,barrier=0,data=ordered", syscall.MS_NOATIME, nil),
+ m(21, 16, 0, 17, "/", "/sys/fs/cgroup", "rw,nosuid,nodev,noexec,relatime", o(), "tmpfs", "tmpfs", "rw,mode=755", syscall.MS_NOSUID|syscall.MS_NODEV|syscall.MS_NOEXEC|syscall.MS_RELATIME, nil),
+ m(22, 21, 0, 18, "/", "/sys/fs/cgroup/systemd", "rw,nosuid,nodev,noexec,relatime", o(), "cgroup", "cgroup", "rw,release_agent=/lib/systemd/systemd-cgroups-agent,name=systemd", syscall.MS_NOSUID|syscall.MS_NODEV|syscall.MS_NOEXEC|syscall.MS_RELATIME, nil),
+ m(23, 21, 0, 19, "/", "/sys/fs/cgroup/cpuset", "rw,nosuid,nodev,noexec,relatime", o(), "cgroup", "cgroup", "rw,cpuset", syscall.MS_NOSUID|syscall.MS_NODEV|syscall.MS_NOEXEC|syscall.MS_RELATIME, nil),
+ m(24, 21, 0, 20, "/", "/sys/fs/cgroup/ns", "rw,nosuid,nodev,noexec,relatime", o(), "cgroup", "cgroup", "rw,ns", syscall.MS_NOSUID|syscall.MS_NODEV|syscall.MS_NOEXEC|syscall.MS_RELATIME, nil),
+ m(25, 21, 0, 21, "/", "/sys/fs/cgroup/cpu", "rw,nosuid,nodev,noexec,relatime", o(), "cgroup", "cgroup", "rw,cpu", syscall.MS_NOSUID|syscall.MS_NODEV|syscall.MS_NOEXEC|syscall.MS_RELATIME, nil),
+ m(26, 21, 0, 22, "/", "/sys/fs/cgroup/cpuacct", "rw,nosuid,nodev,noexec,relatime", o(), "cgroup", "cgroup", "rw,cpuacct", syscall.MS_NOSUID|syscall.MS_NODEV|syscall.MS_NOEXEC|syscall.MS_RELATIME, nil),
+ m(27, 21, 0, 23, "/", "/sys/fs/cgroup/memory", "rw,nosuid,nodev,noexec,relatime", o(), "cgroup", "cgroup", "rw,memory", syscall.MS_NOSUID|syscall.MS_NODEV|syscall.MS_NOEXEC|syscall.MS_RELATIME, nil),
+ m(28, 21, 0, 24, "/", "/sys/fs/cgroup/devices", "rw,nosuid,nodev,noexec,relatime", o(), "cgroup", "cgroup", "rw,devices", syscall.MS_NOSUID|syscall.MS_NODEV|syscall.MS_NOEXEC|syscall.MS_RELATIME, nil),
+ m(29, 21, 0, 25, "/", "/sys/fs/cgroup/freezer", "rw,nosuid,nodev,noexec,relatime", o(), "cgroup", "cgroup", "rw,freezer", syscall.MS_NOSUID|syscall.MS_NODEV|syscall.MS_NOEXEC|syscall.MS_RELATIME, nil),
+ m(30, 21, 0, 26, "/", "/sys/fs/cgroup/net_cls", "rw,nosuid,nodev,noexec,relatime", o(), "cgroup", "cgroup", "rw,net_cls", syscall.MS_NOSUID|syscall.MS_NODEV|syscall.MS_NOEXEC|syscall.MS_RELATIME, nil),
+ m(31, 21, 0, 27, "/", "/sys/fs/cgroup/blkio", "rw,nosuid,nodev,noexec,relatime", o(), "cgroup", "cgroup", "rw,blkio", syscall.MS_NOSUID|syscall.MS_NODEV|syscall.MS_NOEXEC|syscall.MS_RELATIME, nil),
+ m(32, 16, 0, 28, "/", "/sys/kernel/security", "rw,relatime", o(), "autofs", "systemd-1", "rw,fd=22,pgrp=1,timeout=300,minproto=5,maxproto=5,direct", syscall.MS_RELATIME, nil),
+ m(33, 17, 0, 29, "/", "/dev/hugepages", "rw,relatime", o(), "autofs", "systemd-1", "rw,fd=23,pgrp=1,timeout=300,minproto=5,maxproto=5,direct", syscall.MS_RELATIME, nil),
+ m(34, 16, 0, 30, "/", "/sys/kernel/debug", "rw,relatime", o(), "autofs", "systemd-1", "rw,fd=24,pgrp=1,timeout=300,minproto=5,maxproto=5,direct", syscall.MS_RELATIME, nil),
+ m(35, 15, 0, 31, "/", "/proc/sys/fs/binfmt_misc", "rw,relatime", o(), "autofs", "systemd-1", "rw,fd=25,pgrp=1,timeout=300,minproto=5,maxproto=5,direct", syscall.MS_RELATIME, nil),
+ m(36, 17, 0, 32, "/", "/dev/mqueue", "rw,relatime", o(), "autofs", "systemd-1", "rw,fd=26,pgrp=1,timeout=300,minproto=5,maxproto=5,direct", syscall.MS_RELATIME, nil),
+ m(37, 15, 0, 14, "/", "/proc/bus/usb", "rw,relatime", o(), "usbfs", "/proc/bus/usb", "rw", syscall.MS_RELATIME, nil),
+ m(38, 33, 0, 33, "/", "/dev/hugepages", "rw,relatime", o(), "hugetlbfs", "hugetlbfs", "rw", syscall.MS_RELATIME, nil),
+ m(39, 36, 0, 12, "/", "/dev/mqueue", "rw,relatime", o(), "mqueue", "mqueue", "rw", syscall.MS_RELATIME, nil),
+ m(40, 20, 8, 6, "/", "/boot", "rw,noatime", o(), "ext3", "/dev/sda6", "rw,errors=continue,barrier=0,data=ordered", syscall.MS_NOATIME, nil),
+ m(41, 20, 253, 0, "/", "/home/kzak", "rw,noatime", o(), "ext4", "/dev/mapper/kzak-home", "rw,barrier=1,data=ordered", syscall.MS_NOATIME, nil),
+ m(42, 35, 0, 34, "/", "/proc/sys/fs/binfmt_misc", "rw,relatime", o(), "binfmt_misc", "none", "rw", syscall.MS_RELATIME, nil),
+ m(43, 16, 0, 35, "/", "/sys/fs/fuse/connections", "rw,relatime", o(), "fusectl", "fusectl", "rw", syscall.MS_RELATIME, nil),
+ m(44, 41, 0, 36, "/", "/home/kzak/.gvfs", "rw,nosuid,nodev,relatime", o(), "fuse.gvfs-fuse-daemon", "gvfs-fuse-daemon", "rw,user_id=500,group_id=500", syscall.MS_NOSUID|syscall.MS_NODEV|syscall.MS_RELATIME, nil),
+ m(45, 20, 0, 37, "/", "/var/lib/nfs/rpc_pipefs", "rw,relatime", o(), "rpc_pipefs", "sunrpc", "rw", syscall.MS_RELATIME, nil),
+ m(47, 20, 0, 38, "/", "/mnt/sounds", "rw,relatime", o(), "cifs", "//foo.home/bar/", "rw,unc=\\\\foo.home\\bar,username=kzak,domain=SRGROUP,uid=0,noforceuid,gid=0,noforcegid,addr=192.168.111.1,posixpaths,serverino,acl,rsize=16384,wsize=57344", syscall.MS_RELATIME, nil),
+ m(49, 20, 0, 56, "/", "/mnt/test/foobar", "rw,relatime,nosymfollow", o("shared:323"), "tmpfs", "tmpfs", "rw", syscall.MS_RELATIME|vfs.MS_NOSYMFOLLOW, nil),
+ }, nil, nil},
+
+ {"sample nosrc", sampleMountinfoNoSrc, nil, "", []*wantMountInfo{
+ m(15, 20, 0, 3, "/", "/proc", "rw,relatime", o(), "proc", "/proc", "rw", syscall.MS_RELATIME, nil),
+ m(16, 20, 0, 15, "/", "/sys", "rw,relatime", o(), "sysfs", "/sys", "rw", syscall.MS_RELATIME, nil),
+ m(17, 20, 0, 5, "/", "/dev", "rw,relatime", o(), "devtmpfs", "udev", "rw,size=1983516k,nr_inodes=495879,mode=755", syscall.MS_RELATIME, nil),
+ m(18, 17, 0, 10, "/", "/dev/pts", "rw,relatime", o(), "devpts", "devpts", "rw,gid=5,mode=620,ptmxmode=000", syscall.MS_RELATIME, nil),
+ m(19, 17, 0, 16, "/", "/dev/shm", "rw,relatime", o(), "tmpfs", "tmpfs", "rw", syscall.MS_RELATIME, nil),
+ m(20, 1, 8, 4, "/", "/", "rw,noatime", o(), "ext3", "/dev/sda4", "rw,errors=continue,user_xattr,acl,barrier=0,data=ordered", syscall.MS_NOATIME, nil),
+ m(21, 20, 0, 53, "/", "/mnt/test", "rw,relatime", o("shared:212"), "tmpfs", "", "rw", syscall.MS_RELATIME, nil),
+ }, nil, nil},
+ }
+
+ for _, tc := range testCases {
+ t.Run(tc.name, func(t *testing.T) {
+ t.Parallel()
+
+ t.Run("decode", func(t *testing.T) {
+ t.Parallel()
+ var got *vfs.MountInfo
+ d := vfs.NewMountInfoDecoder(strings.NewReader(tc.sample))
+ err := d.Decode(&got)
+ tc.check(t, d, "Decode",
+ func(yield func(*vfs.MountInfoEntry) bool) {
+ for cur := got; cur != nil; cur = cur.Next {
+ if !yield(&cur.MountInfoEntry) {
+ return
+ }
+ }
+ }, func() error { return err })
+ t.Run("reuse", func(t *testing.T) {
+ tc.check(t, d, "Entries",
+ d.Entries(), d.Err)
+ })
+ })
+
+ t.Run("iter", func(t *testing.T) {
+ t.Parallel()
+ d := vfs.NewMountInfoDecoder(strings.NewReader(tc.sample))
+ tc.check(t, d, "Entries",
+ d.Entries(), d.Err)
+
+ t.Run("reuse", func(t *testing.T) {
+ tc.check(t, d, "Entries",
+ d.Entries(), d.Err)
+ })
+ })
+
+ t.Run("yield", func(t *testing.T) {
+ t.Parallel()
+ d := vfs.NewMountInfoDecoder(strings.NewReader(tc.sample))
+ v := false
+ d.Entries()(func(entry *vfs.MountInfoEntry) bool { v = !v; return v })
+ d.Entries()(func(entry *vfs.MountInfoEntry) bool { return false })
+
+ tc.check(t, d, "Entries",
+ d.Entries(), d.Err)
+
+ t.Run("reuse", func(t *testing.T) {
+ tc.check(t, d, "Entries",
+ d.Entries(), d.Err)
+ })
+ })
+ })
+ }
+}
+
+type mountInfoTest struct {
+ name string
+ sample string
+ wantErr error
+ wantError string
+ want []*wantMountInfo
+
+ wantNode *vfs.MountInfoNode
+ wantCollectF func(n *vfs.MountInfoNode) []*vfs.MountInfoNode
+}
+
+func (tc *mountInfoTest) check(t *testing.T, d *vfs.MountInfoDecoder, funcName string,
+ got iter.Seq[*vfs.MountInfoEntry], gotErr func() error) {
+ i := 0
+ for cur := range got {
+ if i == len(tc.want) {
+ if funcName != "Decode" && (tc.wantErr != nil || tc.wantError != "") {
+ continue
+ }
+
+ t.Errorf("%s: got more than %d entries", funcName, len(tc.want))
+ break
+ }
+
+ if !reflect.DeepEqual(cur, &tc.want[i].MountInfoEntry) {
+ t.Errorf("%s: entry %d\ngot: %#v\nwant: %#v",
+ funcName, i, cur, tc.want[i])
+ }
+
+ flags, unmatched := cur.Flags()
+ if flags != tc.want[i].flags {
+ t.Errorf("Flags(%q): %#x, want %#x",
+ cur.VfsOptstr, flags, tc.want[i].flags)
+ }
+ if !slices.Equal(unmatched, tc.want[i].unmatched) {
+ t.Errorf("Flags(%q): unmatched = %#q, want %#q",
+ cur.VfsOptstr, unmatched, tc.want[i].unmatched)
+ }
+
+ i++
+ }
+
+ if i != len(tc.want) {
+ t.Errorf("%s: got %d entries, want %d", funcName, i, len(tc.want))
+ }
+
+ if tc.wantErr == nil && tc.wantError == "" && tc.wantCollectF != nil {
+ t.Run("unfold", func(t *testing.T) {
+ n, err := d.Unfold("/")
+ if err != nil {
+ t.Errorf("Unfold: error = %v", err)
+ } else {
+ t.Run("stop", func(t *testing.T) {
+ v := false
+ n.Collective()(func(node *vfs.MountInfoNode) bool { v = !v; return v })
+ })
+
+ if !reflect.DeepEqual(n, tc.wantNode) {
+ t.Errorf("Unfold: %s, want %s",
+ mustMarshal(n), mustMarshal(tc.wantNode))
+ }
+
+ t.Run("collective", func(t *testing.T) {
+ wantCollect := tc.wantCollectF(n)
+ if gotCollect := slices.Collect(n.Collective()); !reflect.DeepEqual(gotCollect, wantCollect) {
+ t.Errorf("Collective: \ngot %#v\nwant %#v",
+ gotCollect, wantCollect)
+ }
+ })
+ }
+ })
+ } else if tc.wantNode != nil || tc.wantCollectF != nil {
+ panic("invalid test case")
+ } else if _, err := d.Unfold("/"); !reflect.DeepEqual(err, tc.wantErr) {
+ if tc.wantError == "" {
+ t.Errorf("Unfold: error = %#v, wantErr %#v",
+ err, tc.wantErr)
+ } else if err != nil && err.Error() != tc.wantError {
+ t.Errorf("Unfold: error = %q, wantError %q",
+ err, tc.wantError)
+ }
+ }
+
+ if err := gotErr(); !reflect.DeepEqual(err, tc.wantErr) {
+ if tc.wantError == "" {
+ t.Errorf("%s: error = %#v, wantErr %#v",
+ funcName, err, tc.wantErr)
+ } else if err != nil && err.Error() != tc.wantError {
+ t.Errorf("%s: error = %q, wantError %q",
+ funcName, err, tc.wantError)
+ }
+ }
+}
+
+func mustMarshal(v any) string {
+ p, err := json.Marshal(v)
+ if err != nil {
+ panic(err.Error())
+ }
+ return string(p)
+}
+
+type wantMountInfo struct {
+ vfs.MountInfoEntry
+ flags uintptr
+ unmatched []string
+}
+
+func m(
+ id, parent, maj, min int, root, target, vfsOptstr string, optFields []string, fsType, source, fsOptstr string,
+ flags uintptr, unmatched []string,
+) *wantMountInfo {
+ return &wantMountInfo{
+ vfs.MountInfoEntry{
+ ID: id,
+ Parent: parent,
+ Devno: vfs.DevT{maj, min},
+ Root: root,
+ Target: target,
+ VfsOptstr: vfsOptstr,
+ OptFields: optFields,
+ FsType: fsType,
+ Source: source,
+ FsOptstr: fsOptstr,
+ }, flags, unmatched,
+ }
+}
+
+func mn(
+ id, parent, maj, min int, root, target, vfsOptstr string, optFields []string, fsType, source, fsOptstr string,
+ covered bool, firstChild, nextSibling *vfs.MountInfoNode,
+) *vfs.MountInfoNode {
+ return &vfs.MountInfoNode{
+ MountInfoEntry: &vfs.MountInfoEntry{
+ ID: id,
+ Parent: parent,
+ Devno: vfs.DevT{maj, min},
+ Root: root,
+ Target: target,
+ VfsOptstr: vfsOptstr,
+ OptFields: optFields,
+ FsType: fsType,
+ Source: source,
+ FsOptstr: fsOptstr,
+ },
+ FirstChild: firstChild,
+ NextSibling: nextSibling,
+ Clean: path.Clean(target),
+ Covered: covered,
+ }
+}
+
+func o(field ...string) []string {
+ if field == nil {
+ return []string{}
+ }
+ return field
+}
+
+const (
+ sampleMountinfoBase = `15 20 0:3 / /proc rw,relatime - proc /proc rw
+16 20 0:15 / /sys rw,relatime - sysfs /sys rw
+17 20 0:5 / /dev rw,relatime - devtmpfs udev rw,size=1983516k,nr_inodes=495879,mode=755
+18 17 0:10 / /dev/pts rw,relatime - devpts devpts rw,gid=5,mode=620,ptmxmode=000
+19 17 0:16 / /dev/shm rw,relatime - tmpfs tmpfs rw
+20 1 8:4 / / ro,noatime,nodiratime,meow - ext3 /dev/sda4 rw,errors=continue,user_xattr,acl,barrier=0,data=ordered`
+
+ sampleMountinfo = `15 20 0:3 / /proc rw,relatime - proc /proc rw
+16 20 0:15 / /sys rw,relatime - sysfs /sys rw
+17 20 0:5 / /dev rw,relatime - devtmpfs udev rw,size=1983516k,nr_inodes=495879,mode=755
+18 17 0:10 / /dev/pts rw,relatime - devpts devpts rw,gid=5,mode=620,ptmxmode=000
+19 17 0:16 / /dev/shm rw,relatime - tmpfs tmpfs rw
+20 1 8:4 / / rw,noatime - ext3 /dev/sda4 rw,errors=continue,user_xattr,acl,barrier=0,data=ordered
+21 16 0:17 / /sys/fs/cgroup rw,nosuid,nodev,noexec,relatime - tmpfs tmpfs rw,mode=755
+22 21 0:18 / /sys/fs/cgroup/systemd rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,release_agent=/lib/systemd/systemd-cgroups-agent,name=systemd
+23 21 0:19 / /sys/fs/cgroup/cpuset rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,cpuset
+24 21 0:20 / /sys/fs/cgroup/ns rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,ns
+25 21 0:21 / /sys/fs/cgroup/cpu rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,cpu
+26 21 0:22 / /sys/fs/cgroup/cpuacct rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,cpuacct
+27 21 0:23 / /sys/fs/cgroup/memory rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,memory
+28 21 0:24 / /sys/fs/cgroup/devices rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,devices
+29 21 0:25 / /sys/fs/cgroup/freezer rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,freezer
+30 21 0:26 / /sys/fs/cgroup/net_cls rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,net_cls
+31 21 0:27 / /sys/fs/cgroup/blkio rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,blkio
+32 16 0:28 / /sys/kernel/security rw,relatime - autofs systemd-1 rw,fd=22,pgrp=1,timeout=300,minproto=5,maxproto=5,direct
+33 17 0:29 / /dev/hugepages rw,relatime - autofs systemd-1 rw,fd=23,pgrp=1,timeout=300,minproto=5,maxproto=5,direct
+34 16 0:30 / /sys/kernel/debug rw,relatime - autofs systemd-1 rw,fd=24,pgrp=1,timeout=300,minproto=5,maxproto=5,direct
+35 15 0:31 / /proc/sys/fs/binfmt_misc rw,relatime - autofs systemd-1 rw,fd=25,pgrp=1,timeout=300,minproto=5,maxproto=5,direct
+36 17 0:32 / /dev/mqueue rw,relatime - autofs systemd-1 rw,fd=26,pgrp=1,timeout=300,minproto=5,maxproto=5,direct
+37 15 0:14 / /proc/bus/usb rw,relatime - usbfs /proc/bus/usb rw
+38 33 0:33 / /dev/hugepages rw,relatime - hugetlbfs hugetlbfs rw
+39 36 0:12 / /dev/mqueue rw,relatime - mqueue mqueue rw
+40 20 8:6 / /boot rw,noatime - ext3 /dev/sda6 rw,errors=continue,barrier=0,data=ordered
+41 20 253:0 / /home/kzak rw,noatime - ext4 /dev/mapper/kzak-home rw,barrier=1,data=ordered
+42 35 0:34 / /proc/sys/fs/binfmt_misc rw,relatime - binfmt_misc none rw
+43 16 0:35 / /sys/fs/fuse/connections rw,relatime - fusectl fusectl rw
+44 41 0:36 / /home/kzak/.gvfs rw,nosuid,nodev,relatime - fuse.gvfs-fuse-daemon gvfs-fuse-daemon rw,user_id=500,group_id=500
+45 20 0:37 / /var/lib/nfs/rpc_pipefs rw,relatime - rpc_pipefs sunrpc rw
+47 20 0:38 / /mnt/sounds rw,relatime - cifs //foo.home/bar/ rw,unc=\\foo.home\bar,username=kzak,domain=SRGROUP,uid=0,noforceuid,gid=0,noforcegid,addr=192.168.111.1,posixpaths,serverino,acl,rsize=16384,wsize=57344
+49 20 0:56 / /mnt/test/foobar rw,relatime,nosymfollow shared:323 - tmpfs tmpfs rw`
+
+ sampleMountinfoNoSrc = `15 20 0:3 / /proc rw,relatime - proc /proc rw
+16 20 0:15 / /sys rw,relatime - sysfs /sys rw
+17 20 0:5 / /dev rw,relatime - devtmpfs udev rw,size=1983516k,nr_inodes=495879,mode=755
+18 17 0:10 / /dev/pts rw,relatime - devpts devpts rw,gid=5,mode=620,ptmxmode=000
+19 17 0:16 / /dev/shm rw,relatime - tmpfs tmpfs rw
+20 1 8:4 / / rw,noatime - ext3 /dev/sda4 rw,errors=continue,user_xattr,acl,barrier=0,data=ordered
+21 20 0:53 / /mnt/test rw,relatime shared:212 - tmpfs rw`
+)
generated by cgit v1.3.1 (git 2.54.0) at 2026-08-29 22:33:55 +0000