56 lines
940 B
Go
56 lines
940 B
Go
package shm
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import (
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"syscall"
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)
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// System call constants.
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const (
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sysShmAt = syscall.SYS_SHMAT
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sysShmCtl = syscall.SYS_SHMCTL
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sysShmDt = syscall.SYS_SHMDT
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sysShmGet = syscall.SYS_SHMGET
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)
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// Perm is used to pass permission information to IPC operations.
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type Perm struct {
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// Owner's user ID.
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Uid uint32
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// Owner's group ID.
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Gid uint32
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// Creator's user ID.
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Cuid uint32
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// Creator's group ID.
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Cgid uint32
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// Read/write permission.
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Mode uint16
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// Sequence number.
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Seq uint16
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// Key.
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Key int32
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}
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// IdDs describes shared memory segment.
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type IdDs struct {
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// Operation permission struct.
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Perm Perm
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// Size of segment in bytes.
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SegSz uint64
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// Pid of last shmat/shmdt.
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Lpid int32
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// Pid of creator.
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Cpid int32
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// Number of current attaches.
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Nattch uint16
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// Padding.
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PadCgo0 [2]byte
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// Padding.
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PadCgo1 [8]byte
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// Padding.
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PadCgo2 [8]byte
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// Padding.
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PadCgo3 [8]byte
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// Padding.
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PadCgo4 [8]byte
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}
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