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linux: Wrap error with contextual message

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Signed-off-by: Kenfe-Mickael Laventure <mickael.laventure@gmail.com>
This commit is contained in:
Kenfe-Mickael Laventure
2017-06-14 08:50:58 -07:00
parent 171759a233
commit 33598cc5d3
3 changed files with 19 additions and 16 deletions
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15
linux/shim/exec.go
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@@ -20,6 +20,7 @@ import (
"github.com/containerd/fifo"
runc "github.com/containerd/go-runc"
specs "github.com/opencontainers/runtime-spec/specs-go"
"github.com/pkg/errors"
)
type execProcess struct {
@@ -59,13 +60,13 @@ func newExecProcess(context context.Context, path string, r *shimapi.ExecRequest
)
if r.Terminal {
if socket, err = runc.NewConsoleSocket(filepath.Join(path, "pty.sock")); err != nil {
return nil, err
return nil, errors.Wrap(err, "failed to create runc console socket")
}
defer os.Remove(socket.Path())
} else {
// TODO: get uid/gid
if io, err = runc.NewPipeIO(0, 0); err != nil {
return nil, err
return nil, errors.Wrap(err, "failed to create runc io pipes")
}
e.io = io
}
@@ -90,7 +91,7 @@ func newExecProcess(context context.Context, path string, r *shimapi.ExecRequest
if r.Stdin != "" {
sc, err := fifo.OpenFifo(context, r.Stdin, syscall.O_WRONLY|syscall.O_NONBLOCK, 0)
if err != nil {
return nil, err
return nil, errors.Wrapf(err, "failed to open stdin fifo %s", r.Stdin)
}
e.closers = append(e.closers, sc)
e.stdin = sc
@@ -99,21 +100,21 @@ func newExecProcess(context context.Context, path string, r *shimapi.ExecRequest
if socket != nil {
console, err := socket.ReceiveMaster()
if err != nil {
return nil, err
return nil, errors.Wrap(err, "failed to retrieve console master")
}
e.console = console
if err := copyConsole(context, console, r.Stdin, r.Stdout, r.Stderr, &e.WaitGroup, &copyWaitGroup); err != nil {
return nil, err
return nil, errors.Wrap(err, "failed to start console copy")
}
} else {
if err := copyPipes(context, io, r.Stdin, r.Stdout, r.Stderr, &e.WaitGroup, &copyWaitGroup); err != nil {
return nil, err
return nil, errors.Wrap(err, "failed to start io pipe copy")
}
}
copyWaitGroup.Wait()
pid, err := runc.ReadPidFile(opts.PidFile)
if err != nil {
return nil, err
return nil, errors.Wrap(err, "failed to retrieve runc exec pid")
}
e.pid = pid
return e, nil