io

package
v1.9.11 Latest Latest
Warning

This package is not in the latest version of its module.

 Go to latest Published: Sep 28, 2018 License: Apache-2.0 Imports: 6 Imported by: 0

Documentation

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func ConsistentRead added in v1.7.14 

func ConsistentRead(filename string, attempts int) ([]byte, error)

ConsistentRead repeatedly reads a file until it gets the same content twice. This is useful when reading files in /proc that are larger than page size and kernel may modify them between individual read() syscalls.

Types

type NsenterWriter 

type NsenterWriter struct{}

NsenterWriter is implementation of Writer interface that allows writing data to file using nsenter command. If a program (e.g. kubelet) runs in a container it may want to write data to a mounted device. Since in Docker, mount propagation mode is set to private, it will not see the mounted device in its own namespace. To work around this limitation one has to first enter hosts namespace (by using 'nsenter') and only then write data.

func (*NsenterWriter) WriteFile 

func (writer *NsenterWriter) WriteFile(filename string, data []byte, perm os.FileMode) error

WriteFile calls 'nsenter cat - > <the file>' and 'nsenter chmod' to create a file on the host.

type StdWriter 

type StdWriter struct {
}

StdWriter implements Writer interface and uses standard libraries for writing data to files.

func (*StdWriter) WriteFile 

func (writer *StdWriter) WriteFile(filename string, data []byte, perm os.FileMode) error

WriteFile directly calls ioutil.WriteFile.

type Writer 

type Writer interface {
	// WriteFile mimics ioutil.WriteFile.
	WriteFile(filename string, data []byte, perm os.FileMode) error
}

Writer is an interface which allows to write data to a file.

Source Files

View all Source files

Jump to

Keyboard shortcuts

? : This menu
/ : Search site
f or F : Jump to
y or Y : Canonical URL
go.dev uses cookies from Google to deliver and enhance the quality of its services and to analyze traffic. Learn more.
JackTT - Gopher 🇻🇳