disk

package
Version: v0.3.9 Latest Latest
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Published: Oct 31, 2015 License: MIT Imports: 11 Imported by: 0

Documentation

Overview

Package binary implements simple translation between numbers and byte sequences and encoding and decoding of varints.

Numbers are translated by reading and writing fixed-size values. A fixed-size value is either a fixed-size arithmetic type (int8, uint8, int16, float32, complex64, ...) or an array or struct containing only fixed-size values.

The varint functions encode and decode single integer values using a variable-length encoding; smaller values require fewer bytes. For a specification, see http://code.google.com/apis/protocolbuffers/docs/encoding.html.

This package favors simplicity over efficiency. Clients that require high-performance serialization, especially for large data structures, should look at more advanced solutions such as the encoding/gob package or protocol buffers.

Index

Constants

View Source
const (
	// man statfs
	ADFS_SUPER_MAGIC      = 0xadf5
	AFFS_SUPER_MAGIC      = 0xADFF
	BDEVFS_MAGIC          = 0x62646576
	BEFS_SUPER_MAGIC      = 0x42465331
	BFS_MAGIC             = 0x1BADFACE
	BINFMTFS_MAGIC        = 0x42494e4d
	BTRFS_SUPER_MAGIC     = 0x9123683E
	CGROUP_SUPER_MAGIC    = 0x27e0eb
	CIFS_MAGIC_NUMBER     = 0xFF534D42
	CODA_SUPER_MAGIC      = 0x73757245
	COH_SUPER_MAGIC       = 0x012FF7B7
	CRAMFS_MAGIC          = 0x28cd3d45
	DEBUGFS_MAGIC         = 0x64626720
	DEVFS_SUPER_MAGIC     = 0x1373
	DEVPTS_SUPER_MAGIC    = 0x1cd1
	EFIVARFS_MAGIC        = 0xde5e81e4
	EFS_SUPER_MAGIC       = 0x00414A53
	EXT_SUPER_MAGIC       = 0x137D
	EXT2_OLD_SUPER_MAGIC  = 0xEF51
	EXT2_SUPER_MAGIC      = 0xEF53
	EXT3_SUPER_MAGIC      = 0xEF53
	EXT4_SUPER_MAGIC      = 0xEF53
	FUSE_SUPER_MAGIC      = 0x65735546
	FUTEXFS_SUPER_MAGIC   = 0xBAD1DEA
	HFS_SUPER_MAGIC       = 0x4244
	HOSTFS_SUPER_MAGIC    = 0x00c0ffee
	HPFS_SUPER_MAGIC      = 0xF995E849
	HUGETLBFS_MAGIC       = 0x958458f6
	ISOFS_SUPER_MAGIC     = 0x9660
	JFFS2_SUPER_MAGIC     = 0x72b6
	JFS_SUPER_MAGIC       = 0x3153464a
	MINIX_SUPER_MAGIC     = 0x137F /* orig. minix */
	MINIX_SUPER_MAGIC2    = 0x138F /* 30 char minix */
	MINIX2_SUPER_MAGIC    = 0x2468 /* minix V2 */
	MINIX2_SUPER_MAGIC2   = 0x2478 /* minix V2, 30 char names */
	MINIX3_SUPER_MAGIC    = 0x4d5a /* minix V3 fs, 60 char names */
	MQUEUE_MAGIC          = 0x19800202
	MSDOS_SUPER_MAGIC     = 0x4d44
	NCP_SUPER_MAGIC       = 0x564c
	NFS_SUPER_MAGIC       = 0x6969
	NILFS_SUPER_MAGIC     = 0x3434
	NTFS_SB_MAGIC         = 0x5346544e
	OCFS2_SUPER_MAGIC     = 0x7461636f
	OPENPROM_SUPER_MAGIC  = 0x9fa1
	PIPEFS_MAGIC          = 0x50495045
	PROC_SUPER_MAGIC      = 0x9fa0
	PSTOREFS_MAGIC        = 0x6165676C
	QNX4_SUPER_MAGIC      = 0x002f
	QNX6_SUPER_MAGIC      = 0x68191122
	RAMFS_MAGIC           = 0x858458f6
	REISERFS_SUPER_MAGIC  = 0x52654973
	ROMFS_MAGIC           = 0x7275
	SELINUX_MAGIC         = 0xf97cff8c
	SMACK_MAGIC           = 0x43415d53
	SMB_SUPER_MAGIC       = 0x517B
	SOCKFS_MAGIC          = 0x534F434B
	SQUASHFS_MAGIC        = 0x73717368
	SYSFS_MAGIC           = 0x62656572
	SYSV2_SUPER_MAGIC     = 0x012FF7B6
	SYSV4_SUPER_MAGIC     = 0x012FF7B5
	TMPFS_MAGIC           = 0x01021994
	UDF_SUPER_MAGIC       = 0x15013346
	UFS_MAGIC             = 0x00011954
	USBDEVICE_SUPER_MAGIC = 0x9fa2
	V9FS_MAGIC            = 0x01021997
	VXFS_SUPER_MAGIC      = 0xa501FCF5
	XENFS_SUPER_MAGIC     = 0xabba1974
	XENIX_SUPER_MAGIC     = 0x012FF7B4
	XFS_SUPER_MAGIC       = 0x58465342

	AFS_SUPER_MAGIC             = 0x5346414F
	AUFS_SUPER_MAGIC            = 0x61756673
	ANON_INODE_FS_SUPER_MAGIC   = 0x09041934
	CEPH_SUPER_MAGIC            = 0x00C36400
	ECRYPTFS_SUPER_MAGIC        = 0xF15F
	FAT_SUPER_MAGIC             = 0x4006
	FHGFS_SUPER_MAGIC           = 0x19830326
	FUSEBLK_SUPER_MAGIC         = 0x65735546
	FUSECTL_SUPER_MAGIC         = 0x65735543
	GFS_SUPER_MAGIC             = 0x1161970
	GPFS_SUPER_MAGIC            = 0x47504653
	MTD_INODE_FS_SUPER_MAGIC    = 0x11307854
	INOTIFYFS_SUPER_MAGIC       = 0x2BAD1DEA
	ISOFS_R_WIN_SUPER_MAGIC     = 0x4004
	ISOFS_WIN_SUPER_MAGIC       = 0x4000
	JFFS_SUPER_MAGIC            = 0x07C0
	KAFS_SUPER_MAGIC            = 0x6B414653
	LUSTRE_SUPER_MAGIC          = 0x0BD00BD0
	NFSD_SUPER_MAGIC            = 0x6E667364
	PANFS_SUPER_MAGIC           = 0xAAD7AAEA
	RPC_PIPEFS_SUPER_MAGIC      = 0x67596969
	SECURITYFS_SUPER_MAGIC      = 0x73636673
	UFS_BYTESWAPPED_SUPER_MAGIC = 0x54190100
	VMHGFS_SUPER_MAGIC          = 0xBACBACBC
	VZFS_SUPER_MAGIC            = 0x565A4653
	ZFS_SUPER_MAGIC             = 0x2FC12FC1
)
View Source
const (
	SectorSize = 512
)

Variables

View Source
var BigEndian bigEndian

BigEndian is the big-endian implementation of ByteOrder.

View Source
var LittleEndian littleEndian

LittleEndian is the little-endian implementation of ByteOrder.

Functions

func DiskIOCounters

func DiskIOCounters() (map[string]DiskIOCountersStat, error)

func GetDiskSerialNumber

func GetDiskSerialNumber(name string) string

func Read

func Read(r io.Reader, order ByteOrder, data interface{}) error

Read reads structured binary data from r into data. Data must be a pointer to a fixed-size value or a slice of fixed-size values. Bytes read from r are decoded using the specified byte order and written to successive fields of the data. When reading into structs, the field data for fields with blank (_) field names is skipped; i.e., blank field names may be used for padding. When reading into a struct, all non-blank fields must be exported.

func Size

func Size(v interface{}) int

Size returns how many bytes Write would generate to encode the value v, which must be a fixed-size value or a slice of fixed-size values, or a pointer to such data. If v is neither of these, Size returns -1.

func Write

func Write(w io.Writer, order ByteOrder, data interface{}) error

Write writes the binary representation of data into w. Data must be a fixed-size value or a slice of fixed-size values, or a pointer to such data. Bytes written to w are encoded using the specified byte order and read from successive fields of the data. When writing structs, zero values are written for fields with blank (_) field names.

Types

type ByteOrder

type ByteOrder interface {
	Uint16([]byte) uint16
	Uint32([]byte) uint32
	Uint64([]byte) uint64
	PutUint16([]byte, uint16)
	PutUint32([]byte, uint32)
	PutUint64([]byte, uint64)
	String() string
}

A ByteOrder specifies how to convert byte sequences into 16-, 32-, or 64-bit unsigned integers.

type DiskIOCountersStat

type DiskIOCountersStat struct {
	ReadCount    uint64 `json:"read_count"`
	WriteCount   uint64 `json:"write_count"`
	ReadBytes    uint64 `json:"read_bytes"`
	WriteBytes   uint64 `json:"write_bytes"`
	ReadTime     uint64 `json:"read_time"`
	WriteTime    uint64 `json:"write_time"`
	Name         string `json:"name"`
	IoTime       uint64 `json:"io_time"`
	SerialNumber string `json:"serial_number"`
}

func (DiskIOCountersStat) String

func (d DiskIOCountersStat) String() string

type DiskPartitionStat

type DiskPartitionStat struct {
	Device     string `json:"device"`
	Mountpoint string `json:"mountpoint"`
	Fstype     string `json:"fstype"`
	Opts       string `json:"opts"`
}

func DiskPartitions

func DiskPartitions(all bool) ([]DiskPartitionStat, error)

Get disk partitions. should use setmntent(3) but this implement use /etc/mtab file

func (DiskPartitionStat) String

func (d DiskPartitionStat) String() string

type DiskUsageStat

type DiskUsageStat struct {
	Path              string  `json:"path"`
	Fstype            string  `json:"fstype"`
	Total             uint64  `json:"total"`
	Free              uint64  `json:"free"`
	Used              uint64  `json:"used"`
	UsedPercent       float64 `json:"used_percent"`
	InodesTotal       uint64  `json:"inodes_total"`
	InodesUsed        uint64  `json:"inodes_used"`
	InodesFree        uint64  `json:"inodes_free"`
	InodesUsedPercent float64 `json:"inodes_used_percent"`
}

func DiskUsage

func DiskUsage(path string) (*DiskUsageStat, error)

func (DiskUsageStat) String

func (d DiskUsageStat) String() string

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