Documentation
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Overview ¶
inomap translates (Dev, Flags, Ino) tuples to unique uint64 inode numbers.
Format of the returned inode numbers:
[spill bit = 0][15 bit namespace id][48 bit passthru inode number] [spill bit = 1][63 bit spill inode number ]
Each (Dev, Flags) tuple gets a namespace id assigned. The original inode number is then passed through in the lower 48 bits.
If namespace ids are exhaused, or the original id is larger than 48 bits, the whole (Dev, Flags, Ino) tuple gets mapped in the spill map, and the spill bit is set to 1.
Index ¶
Constants ¶
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Variables ¶
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Functions ¶
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Types ¶
type InoMap ¶
InoMap stores the maps using for inode number translation. See package comment for details.
func (*InoMap) Translate ¶
Translate maps the passed-in (device, inode) pair to a unique inode number.
func (*InoMap) TranslateStat ¶
TranslateStat translates (device, ino) pair contained in "st" into a unique inode number and overwrites the ino in "st" with it. Convience wrapper around Translate().
type QIno ¶
type QIno struct {
// Stat_t.Ino is uint64 on 32- and 64-bit Linu
Ino uint64
// contains filtered or unexported fields
}
QIno = Qualified Inode number. Uniquely identifies a backing file through the device number, inode number pair.
func QInoFromStat ¶
QInoFromStat fills a new QIno struct with the passed Stat_t info.
type TranslateStatZero ¶
type TranslateStatZero struct{}
TranslateStatZero always sets st.Ino to zero. Used for `-sharedstorage`.
func (TranslateStatZero) TranslateStat ¶
func (z TranslateStatZero) TranslateStat(st *syscall.Stat_t)
Source Files