Re: [PATCH] printk: Export log_buf_len to userland

From: John Ogness
Date: Mon Aug 15 2022 - 12:03:30 EST


On 2022-08-15, Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx> wrote:
> On (22/08/10 14:25), Marc Aurèle La France wrote:
>>
>> Make the kernel log's buffer size available to userland so it can be
>> used with `dmesg -s`.

This information is already available via:

klogctl(SYSLOG_ACTION_SIZE_BUFFER, NULL, 0)

And dmesg already uses this with "dmesg -S".

John Ogness