Files
docker-cli/components/engine/pkg/dmesg/dmesg_linux.go
Sebastiaan van Stijn fd08bae89c Remove redundant build-tags
Files that are suffixed with `_linux.go` or `_windows.go` are
already only built on Linux / Windows, so these build-tags
were redundant.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Upstream-commit: 6ed1163c98703f8dd0693cecbadc84d2cda811c3
Component: engine
2017-12-18 17:41:53 +01:00

19 lines
382 B
Go

package dmesg
import (
"unsafe"
"golang.org/x/sys/unix"
)
// Dmesg returns last messages from the kernel log, up to size bytes
func Dmesg(size int) []byte {
t := uintptr(3) // SYSLOG_ACTION_READ_ALL
b := make([]byte, size)
amt, _, err := unix.Syscall(unix.SYS_SYSLOG, t, uintptr(unsafe.Pointer(&b[0])), uintptr(len(b)))
if err != 0 {
return []byte{}
}
return b[:amt]
}