diff options
Diffstat (limited to 'pkg/sentry/fsimpl/sys/sys.go')
| -rw-r--r-- | pkg/sentry/fsimpl/sys/sys.go | 48 |
1 files changed, 22 insertions, 26 deletions
diff --git a/pkg/sentry/fsimpl/sys/sys.go b/pkg/sentry/fsimpl/sys/sys.go index 1568c581f..5a06f4e1c 100644 --- a/pkg/sentry/fsimpl/sys/sys.go +++ b/pkg/sentry/fsimpl/sys/sys.go @@ -64,15 +64,15 @@ func (fsType FilesystemType) GetFilesystem(ctx context.Context, vfsObj *vfs.Virt } fs.VFSFilesystem().Init(vfsObj, &fsType, fs) - root := fs.newDir(creds, defaultSysDirMode, map[string]*kernfs.Dentry{ + root := fs.newDir(creds, defaultSysDirMode, map[string]kernfs.Inode{ "block": fs.newDir(creds, defaultSysDirMode, nil), "bus": fs.newDir(creds, defaultSysDirMode, nil), - "class": fs.newDir(creds, defaultSysDirMode, map[string]*kernfs.Dentry{ + "class": fs.newDir(creds, defaultSysDirMode, map[string]kernfs.Inode{ "power_supply": fs.newDir(creds, defaultSysDirMode, nil), }), "dev": fs.newDir(creds, defaultSysDirMode, nil), - "devices": fs.newDir(creds, defaultSysDirMode, map[string]*kernfs.Dentry{ - "system": fs.newDir(creds, defaultSysDirMode, map[string]*kernfs.Dentry{ + "devices": fs.newDir(creds, defaultSysDirMode, map[string]kernfs.Inode{ + "system": fs.newDir(creds, defaultSysDirMode, map[string]kernfs.Inode{ "cpu": cpuDir(ctx, fs, creds), }), }), @@ -82,13 +82,15 @@ func (fsType FilesystemType) GetFilesystem(ctx context.Context, vfsObj *vfs.Virt "module": fs.newDir(creds, defaultSysDirMode, nil), "power": fs.newDir(creds, defaultSysDirMode, nil), }) - return fs.VFSFilesystem(), root.VFSDentry(), nil + var rootD kernfs.Dentry + rootD.Init(&fs.Filesystem, root) + return fs.VFSFilesystem(), rootD.VFSDentry(), nil } -func cpuDir(ctx context.Context, fs *filesystem, creds *auth.Credentials) *kernfs.Dentry { +func cpuDir(ctx context.Context, fs *filesystem, creds *auth.Credentials) kernfs.Inode { k := kernel.KernelFromContext(ctx) maxCPUCores := k.ApplicationCores() - children := map[string]*kernfs.Dentry{ + children := map[string]kernfs.Inode{ "online": fs.newCPUFile(creds, maxCPUCores, linux.FileMode(0444)), "possible": fs.newCPUFile(creds, maxCPUCores, linux.FileMode(0444)), "present": fs.newCPUFile(creds, maxCPUCores, linux.FileMode(0444)), @@ -99,14 +101,14 @@ func cpuDir(ctx context.Context, fs *filesystem, creds *auth.Credentials) *kernf return fs.newDir(creds, defaultSysDirMode, children) } -func kernelDir(ctx context.Context, fs *filesystem, creds *auth.Credentials) *kernfs.Dentry { +func kernelDir(ctx context.Context, fs *filesystem, creds *auth.Credentials) kernfs.Inode { // If kcov is available, set up /sys/kernel/debug/kcov. Technically, debugfs // should be mounted at debug/, but for our purposes, it is sufficient to // keep it in sys. - var children map[string]*kernfs.Dentry + var children map[string]kernfs.Inode if coverage.KcovAvailable() { - children = map[string]*kernfs.Dentry{ - "debug": fs.newDir(creds, linux.FileMode(0700), map[string]*kernfs.Dentry{ + children = map[string]kernfs.Inode{ + "debug": fs.newDir(creds, linux.FileMode(0700), map[string]kernfs.Inode{ "kcov": fs.newKcovFile(ctx, creds), }), } @@ -125,27 +127,23 @@ func (fs *filesystem) Release(ctx context.Context) { // +stateify savable type dir struct { dirRefs + kernfs.InodeAlwaysValid kernfs.InodeAttrs - kernfs.InodeNoDynamicLookup kernfs.InodeNotSymlink kernfs.InodeDirectoryNoNewChildren + kernfs.InodeTemporary kernfs.OrderedChildren locks vfs.FileLocks - - dentry kernfs.Dentry } -func (fs *filesystem) newDir(creds *auth.Credentials, mode linux.FileMode, contents map[string]*kernfs.Dentry) *kernfs.Dentry { +func (fs *filesystem) newDir(creds *auth.Credentials, mode linux.FileMode, contents map[string]kernfs.Inode) kernfs.Inode { d := &dir{} d.InodeAttrs.Init(creds, linux.UNNAMED_MAJOR, fs.devMinor, fs.NextIno(), linux.ModeDirectory|0755) d.OrderedChildren.Init(kernfs.OrderedChildrenOptions{}) d.EnableLeakCheck() - d.dentry.Init(d) - - d.IncLinks(d.OrderedChildren.Populate(&d.dentry, contents)) - - return &d.dentry + d.IncLinks(d.OrderedChildren.Populate(contents)) + return d } // SetStat implements kernfs.Inode.SetStat not allowing inode attributes to be changed. @@ -165,8 +163,8 @@ func (d *dir) Open(ctx context.Context, rp *vfs.ResolvingPath, kd *kernfs.Dentry } // DecRef implements kernfs.Inode.DecRef. -func (d *dir) DecRef(context.Context) { - d.dirRefs.DecRef(d.Destroy) +func (d *dir) DecRef(ctx context.Context) { + d.dirRefs.DecRef(func() { d.Destroy(ctx) }) } // StatFS implements kernfs.Inode.StatFS. @@ -190,12 +188,10 @@ func (c *cpuFile) Generate(ctx context.Context, buf *bytes.Buffer) error { return nil } -func (fs *filesystem) newCPUFile(creds *auth.Credentials, maxCores uint, mode linux.FileMode) *kernfs.Dentry { +func (fs *filesystem) newCPUFile(creds *auth.Credentials, maxCores uint, mode linux.FileMode) kernfs.Inode { c := &cpuFile{maxCores: maxCores} c.DynamicBytesFile.Init(creds, linux.UNNAMED_MAJOR, fs.devMinor, fs.NextIno(), c, mode) - d := &kernfs.Dentry{} - d.Init(c) - return d + return c } // +stateify savable |