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| author | Fabricio Voznika <fvoznika@google.com> | 2020-03-16 15:59:29 -0700 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2020-03-16 16:00:49 -0700 |
| commit | 2a6c4369be8d0522a1f439aa02bce0eb21d42ea2 (patch) | |
| tree | 73122f0ce6fbdcc96c568c253c6ce21c5ad87af2 /pkg/sentry/fsimpl/gofer/regular_file.go | |
| parent | 0f60799a4f8c3db567973574147370fc900df55f (diff) | |
Enforce file size rlimits in VFS2
Updates #1035
PiperOrigin-RevId: 301255357
Diffstat (limited to 'pkg/sentry/fsimpl/gofer/regular_file.go')
| -rw-r--r-- | pkg/sentry/fsimpl/gofer/regular_file.go | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/pkg/sentry/fsimpl/gofer/regular_file.go b/pkg/sentry/fsimpl/gofer/regular_file.go index e95209661..3593eb1d5 100644 --- a/pkg/sentry/fsimpl/gofer/regular_file.go +++ b/pkg/sentry/fsimpl/gofer/regular_file.go @@ -126,6 +126,11 @@ func (fd *regularFileFD) PWrite(ctx context.Context, src usermem.IOSequence, off if opts.Flags != 0 { return 0, syserror.EOPNOTSUPP } + limit, err := vfs.CheckLimit(ctx, offset, src.NumBytes()) + if err != nil { + return 0, err + } + src = src.TakeFirst64(limit) d := fd.dentry() d.metadataMu.Lock() |