On Tue, Mar 15, 2016 at 04:38:36PM +0800, Fei Jie wrote:
> +     int rc = syscall(__NR_syslog, SYSLOG_ACTION_READ, buf, -1);
> +     printf("syslog(SYSLOG_ACTION_READ, %p, -1) = %d %s (%m)\n",
> +            buf, rc,
> +            errno == ENOSYS ? "ENOSYS" : "EINVAL");

SYSLOG_ACTION_READ will return EPERM unless the process is privileged
enough.


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