smbsrv/fksmbd/fksmbd_log.c

b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross/*
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * This file and its contents are supplied under the terms of the
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * Common Development and Distribution License ("CDDL"), version 1.0.
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * You may only use this file in accordance with the terms of version
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * 1.0 of the CDDL.
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross *
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * A full copy of the text of the CDDL should have accompanied this
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * source.  A copy of the CDDL is also available via the Internet at
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * http://www.illumos.org/license/CDDL.
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross */
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross/*
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * Copyright 2014 Nexenta Systems, Inc.  All rights reserved.
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross */
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross#include <stdio.h>
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross#include <stdarg.h>
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross#include <errno.h>
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross#include <string.h>
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross#include <syslog.h>
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross#include <sys/strlog.h>
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross#include <smbsrv/smbinfo.h>
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross#include <smbsrv/smb_ioctl.h>
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross#include "smbd.h"
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross#include <libfakekernel/fakekernel.h>
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Rossstatic const char *pri_name[LOG_DEBUG+1] = {
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross    "emerg", "alert", "crit", "err", "warning", "notice", "info", "debug"
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross};
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross/*
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * Provide a replacement for libsmb:smb_vsyslog() that just
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * prints the messages to stdout for "fksmbd" debugging.
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross */
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Rossvoid
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Rosssmb_vsyslog(int pri, const char *fmt, va_list ap)
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross{
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross    int save_errno = errno;
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross    char buf[SMBD_LOG_MSGSIZE];
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross    char *newfmt;
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross    pri &= LOG_PRIMASK;
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross    if (smbd.s_debug == 0 && pri > LOG_INFO)
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross        return;
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross    newfmt = smb_syslog_fmt_m(buf, sizeof (buf), fmt, save_errno);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross    flockfile(stdout);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross    (void) fprintf(stdout, "fksmbd.%s: ", pri_name[pri]);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross    /* LINTED E_SEC_PRINTF_VAR_FMT */
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross    (void) vfprintf(stdout, newfmt, ap);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross    (void) fprintf(stdout, "\n");
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross    funlockfile(stdout);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross    (void) fflush(stdout);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross}
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross/*
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * Provide a real function (one that prints something) to replace
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * the stub in libfakekernel.  This prints cmn_err() messages.
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross */
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Rossvoid
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Rossfakekernel_putlog(char *msg, size_t len, int flags)
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross{
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross    /*
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross     * [CE_CONT, CE_NOTE, CE_WARN, CE_PANIC] maps to
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross     * [SL_NOTE, SL_NOTE, SL_WARN, SL_FATAL]
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross     */
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross    if (smbd.s_debug == 0 && (flags & SL_NOTE))
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross        return;
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross    (void) fwrite(msg, 1, len, stdout);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross    (void) fflush(stdout);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross}
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross/*
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * Initialization function called at the start of fksmbd:main().
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * Call an empty function in both of libfksmbsrv, libfakekernel,
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * just to force them to load so we can set breakpoints in them
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * without debugger forceload tricks.  This also avoids elfchk
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * complaints from libfakekernel, which we don't call directly
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * except for here.
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross */
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Rossvoid
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Rossfksmbd_init(void)
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross{
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross    fksmbsrv_drv_load();
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross    fakekernel_init();
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross}