diff options
Diffstat (limited to 'pkg/sentry/fsimpl/kernfs/filesystem.go')
| -rw-r--r-- | pkg/sentry/fsimpl/kernfs/filesystem.go | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/pkg/sentry/fsimpl/kernfs/filesystem.go b/pkg/sentry/fsimpl/kernfs/filesystem.go index d7d3e8f48..49f6a0f1d 100644 --- a/pkg/sentry/fsimpl/kernfs/filesystem.go +++ b/pkg/sentry/fsimpl/kernfs/filesystem.go @@ -140,7 +140,7 @@ func (fs *Filesystem) revalidateChildLocked(ctx context.Context, vfsObj *vfs.Vir } // Reference on childVFSD dropped by a corresponding Valid. child = childVFSD.Impl().(*Dentry) - parent.insertChildLocked(name, child) + parent.InsertChildLocked(name, child) } return child, nil } @@ -548,7 +548,7 @@ func (fs *Filesystem) ReadlinkAt(ctx context.Context, rp *vfs.ResolvingPath) (st if !d.Impl().(*Dentry).isSymlink() { return "", syserror.EINVAL } - return inode.Readlink(ctx) + return inode.Readlink(ctx, rp.Mount()) } // RenameAt implements vfs.FilesystemImpl.RenameAt. @@ -657,6 +657,10 @@ func (fs *Filesystem) RenameAt(ctx context.Context, rp *vfs.ResolvingPath, oldPa func (fs *Filesystem) RmdirAt(ctx context.Context, rp *vfs.ResolvingPath) error { fs.mu.Lock() defer fs.mu.Unlock() + + // Store the name before walkExistingLocked as rp will be advanced past the + // name in the following call. + name := rp.Component() vfsd, inode, err := fs.walkExistingLocked(ctx, rp) fs.processDeferredDecRefsLocked(ctx) if err != nil { @@ -686,7 +690,8 @@ func (fs *Filesystem) RmdirAt(ctx context.Context, rp *vfs.ResolvingPath) error if err := virtfs.PrepareDeleteDentry(mntns, vfsd); err != nil { return err } - if err := parentDentry.inode.RmDir(ctx, rp.Component(), vfsd); err != nil { + + if err := parentDentry.inode.RmDir(ctx, name, vfsd); err != nil { virtfs.AbortDeleteDentry(vfsd) return err } @@ -765,6 +770,10 @@ func (fs *Filesystem) SymlinkAt(ctx context.Context, rp *vfs.ResolvingPath, targ func (fs *Filesystem) UnlinkAt(ctx context.Context, rp *vfs.ResolvingPath) error { fs.mu.Lock() defer fs.mu.Unlock() + + // Store the name before walkExistingLocked as rp will be advanced past the + // name in the following call. + name := rp.Component() vfsd, _, err := fs.walkExistingLocked(ctx, rp) fs.processDeferredDecRefsLocked(ctx) if err != nil { @@ -790,7 +799,7 @@ func (fs *Filesystem) UnlinkAt(ctx context.Context, rp *vfs.ResolvingPath) error if err := virtfs.PrepareDeleteDentry(mntns, vfsd); err != nil { return err } - if err := parentDentry.inode.Unlink(ctx, rp.Component(), vfsd); err != nil { + if err := parentDentry.inode.Unlink(ctx, name, vfsd); err != nil { virtfs.AbortDeleteDentry(vfsd) return err } |