e3dc487328
If mount fails, the reason might be right there in the kernel log ring buffer. Let's include it in the error message, it might be of great help. Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com> Upstream-commit: 46833ee1c353c247e3ef817a08d5a35a2a43bdf3 Component: engine
21 lines
399 B
Go
21 lines
399 B
Go
// +build linux
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package dmesg
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import (
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"unsafe"
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"golang.org/x/sys/unix"
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)
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// Dmesg returns last messages from the kernel log, up to size bytes
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func Dmesg(size int) []byte {
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t := uintptr(3) // SYSLOG_ACTION_READ_ALL
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b := make([]byte, size)
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amt, _, err := unix.Syscall(unix.SYS_SYSLOG, t, uintptr(unsafe.Pointer(&b[0])), uintptr(len(b)))
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if err != 0 {
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return []byte{}
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}
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return b[:amt]
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}
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