mirror of
https://github.com/siderolabs/talos.git
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c2cb0f9778
I wish there were less of them :) Signed-off-by: Andrey Smirnov <smirnov.andrey@gmail.com>
47 lines
1.0 KiB
Go
47 lines
1.0 KiB
Go
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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package cmd
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import (
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"os/exec"
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"github.com/armon/circbuf"
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"github.com/pkg/errors"
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"github.com/talos-systems/talos/pkg/proc/reaper"
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)
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// MaxStderrLen is maximum length of stderr output captured for error message
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const MaxStderrLen = 4096
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// Run executes a command.
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func Run(name string, args ...string) error {
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cmd := exec.Command(name, args...)
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stderr, err := circbuf.NewBuffer(MaxStderrLen)
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if err != nil {
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return err
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}
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cmd.Stderr = stderr
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notifyCh := make(chan reaper.ProcessInfo, 8)
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usingReaper := reaper.Notify(notifyCh)
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if usingReaper {
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defer reaper.Stop(notifyCh)
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}
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if err = cmd.Start(); err != nil {
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return errors.Errorf("%s: %s", err, stderr.String())
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}
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if err = reaper.WaitWrapper(usingReaper, notifyCh, cmd); err != nil {
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return errors.Errorf("%s: %s", err, stderr.String())
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}
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return nil
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}
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