usr/src/cmd/smbsrv/fksmbd/fksmbd_log.c

   1 /*
   2  * This file and its contents are supplied under the terms of the
   3  * Common Development and Distribution License ("CDDL"), version 1.0.
   4  * You may only use this file in accordance with the terms of version
   5  * 1.0 of the CDDL.
   6  *
   7  * A full copy of the text of the CDDL should have accompanied this
   8  * source.  A copy of the CDDL is also available via the Internet at
   9  * http://www.illumos.org/license/CDDL.
  10  */
  11
  12 /*
  13  * Copyright 2014 Nexenta Systems, Inc.  All rights reserved.
  14  */
  15
  16 #include <stdio.h>
  17 #include <stdarg.h>
  18 #include <errno.h>
  19 #include <string.h>
  20 #include <syslog.h>
  21 #include <sys/strlog.h>
  22
  23 #include <smbsrv/smbinfo.h>
  24 #include <smbsrv/smb_ioctl.h>
  25 #include "smbd.h"
  26
  27 #include <libfakekernel/fakekernel.h>
  28
  29 static const char *pri_name[LOG_DEBUG+1] = {
  30         "emerg", "alert", "crit", "err", "warning", "notice", "info", "debug"
  31 };
  32
  33
  34 /*
  35  * Provide a replacement for libsmb:smb_vsyslog() that just
  36  * prints the messages to stdout for "fksmbd" debugging.
  37  */
  38 void
  39 smb_vsyslog(int pri, const char *fmt, va_list ap)
  40 {
  41         int save_errno = errno;
  42         char buf[SMBD_LOG_MSGSIZE];
  43         char *newfmt;
  44
  45         pri &= LOG_PRIMASK;
  46
  47         if (smbd.s_debug == 0 && pri > LOG_INFO)
  48                 return;
  49
  50         newfmt = smb_syslog_fmt_m(buf, sizeof (buf), fmt, save_errno);
  51
  52         flockfile(stdout);
  53         (void) fprintf(stdout, "fksmbd.%s: ", pri_name[pri]);
  54         /* LINTED E_SEC_PRINTF_VAR_FMT */
  55         (void) vfprintf(stdout, newfmt, ap);
  56         (void) fprintf(stdout, "\n");
  57         funlockfile(stdout);
  58
  59         (void) fflush(stdout);
  60 }
  61
  62 /*
  63  * Provide a real function (one that prints something) to replace
  64  * the stub in libfakekernel.  This prints cmn_err() messages.
  65  */
  66 void
  67 fakekernel_putlog(char *msg, size_t len, int flags)
  68 {
  69
  70         /*
  71          * [CE_CONT, CE_NOTE, CE_WARN, CE_PANIC] maps to
  72          * [SL_NOTE, SL_NOTE, SL_WARN, SL_FATAL]
  73          */
  74         if (smbd.s_debug == 0 && (flags & SL_NOTE))
  75                 return;
  76         (void) fwrite(msg, 1, len, stdout);
  77         (void) fflush(stdout);
  78 }
  79
  80 /*
  81  * Initialization function called at the start of fksmbd:main().
  82  * Call an empty function in both of libfksmbsrv, libfakekernel,
  83  * just to force them to load so we can set breakpoints in them
  84  * without debugger forceload tricks.  This also avoids elfchk
  85  * complaints from libfakekernel, which we don't call directly
  86  * except for here.
  87  */
  88 void
  89 fksmbd_init(void)
  90 {
  91         fksmbsrv_drv_load();
  92         fakekernel_init();
  93 }