diff options
| author | Jamie Liu <jamieliu@google.com> | 2020-04-16 19:26:02 -0700 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2020-04-16 19:27:03 -0700 |
| commit | f03996c5e9803934226e4b3a10827501cb936ab9 (patch) | |
| tree | ac461fc6d80b31e714dc0fe43a6cd5da3445b33e /pkg/sentry/syscalls/linux/vfs2/fd.go | |
| parent | f367cf8e67818b0ca3be6fb15b8be481635c2575 (diff) | |
Implement pipe(2) and pipe2(2) for VFS2.
Updates #1035
PiperOrigin-RevId: 306968644
Diffstat (limited to 'pkg/sentry/syscalls/linux/vfs2/fd.go')
| -rw-r--r-- | pkg/sentry/syscalls/linux/vfs2/fd.go | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/pkg/sentry/syscalls/linux/vfs2/fd.go b/pkg/sentry/syscalls/linux/vfs2/fd.go index 3afcea665..8181d80f4 100644 --- a/pkg/sentry/syscalls/linux/vfs2/fd.go +++ b/pkg/sentry/syscalls/linux/vfs2/fd.go @@ -18,6 +18,7 @@ import ( "gvisor.dev/gvisor/pkg/abi/linux" "gvisor.dev/gvisor/pkg/sentry/arch" "gvisor.dev/gvisor/pkg/sentry/kernel" + "gvisor.dev/gvisor/pkg/sentry/kernel/pipe" slinux "gvisor.dev/gvisor/pkg/sentry/syscalls/linux" "gvisor.dev/gvisor/pkg/syserror" ) @@ -140,6 +141,22 @@ func Fcntl(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Syscall return uintptr(file.StatusFlags()), nil, nil case linux.F_SETFL: return 0, nil, file.SetStatusFlags(t, t.Credentials(), args[2].Uint()) + case linux.F_SETPIPE_SZ: + pipefile, ok := file.Impl().(*pipe.VFSPipeFD) + if !ok { + return 0, nil, syserror.EBADF + } + n, err := pipefile.SetPipeSize(int64(args[2].Int())) + if err != nil { + return 0, nil, err + } + return uintptr(n), nil, nil + case linux.F_GETPIPE_SZ: + pipefile, ok := file.Impl().(*pipe.VFSPipeFD) + if !ok { + return 0, nil, syserror.EBADF + } + return uintptr(pipefile.PipeSize()), nil, nil default: // TODO(gvisor.dev/issue/1623): Everything else is not yet supported. return 0, nil, syserror.EINVAL |