diff options
Diffstat (limited to 'pkg')
| -rw-r--r-- | pkg/sentry/syscalls/linux/sys_splice.go | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/pkg/sentry/syscalls/linux/sys_splice.go b/pkg/sentry/syscalls/linux/sys_splice.go index 17e3dde1f..8a98fedcb 100644 --- a/pkg/sentry/syscalls/linux/sys_splice.go +++ b/pkg/sentry/syscalls/linux/sys_splice.go @@ -91,22 +91,29 @@ func Sendfile(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sysc } // Get files. + inFile := t.GetFile(inFD) + if inFile == nil { + return 0, nil, syserror.EBADF + } + defer inFile.DecRef() + + if !inFile.Flags().Read { + return 0, nil, syserror.EBADF + } + outFile := t.GetFile(outFD) if outFile == nil { return 0, nil, syserror.EBADF } defer outFile.DecRef() - inFile := t.GetFile(inFD) - if inFile == nil { + if !outFile.Flags().Write { return 0, nil, syserror.EBADF } - defer inFile.DecRef() - // Verify that the outfile Append flag is not set. Note that fs.Splice - // itself validates that the output file is writable. + // Verify that the outfile Append flag is not set. if outFile.Flags().Append { - return 0, nil, syserror.EBADF + return 0, nil, syserror.EINVAL } // Verify that we have a regular infile. This is a requirement; the |