module/spl/spl-err.c

   1 /*****************************************************************************\
   2  *  Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
   3  *  Copyright (C) 2007 The Regents of the University of California.
   4  *  Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
   5  *  Written by Brian Behlendorf <behlendorf1@llnl.gov>.
   6  *  UCRL-CODE-235197
   7  *
   8  *  This file is part of the SPL, Solaris Porting Layer.
   9  *  For details, see <http://zfsonlinux.org/>.
  10  *
  11  *  The SPL is free software; you can redistribute it and/or modify it
  12  *  under the terms of the GNU General Public License as published by the
  13  *  Free Software Foundation; either version 2 of the License, or (at your
  14  *  option) any later version.
  15  *
  16  *  The SPL is distributed in the hope that it will be useful, but WITHOUT
  17  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  18  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  19  *  for more details.
  20  *
  21  *  You should have received a copy of the GNU General Public License along
  22  *  with the SPL.  If not, see <http://www.gnu.org/licenses/>.
  23  *****************************************************************************
  24  *  Solaris Porting Layer (SPL) Error Implementation.
  25 \*****************************************************************************/
  26
  27 #include <sys/sysmacros.h>
  28 #include <sys/cmn_err.h>
  29 #include <spl-debug.h>
  30
  31 #ifdef SS_DEBUG_SUBSYS
  32 #undef SS_DEBUG_SUBSYS
  33 #endif
  34
  35 #define SS_DEBUG_SUBSYS SS_GENERIC
  36
  37 #ifdef DEBUG_LOG
  38 static char ce_prefix[CE_IGNORE][10] = { "", "NOTICE: ", "WARNING: ", "" };
  39 static char ce_suffix[CE_IGNORE][2] = { "", "\n", "\n", "" };
  40 #endif
  41
  42 int
  43 spl_PANIC(char *filename, const char *functionname,
  44     int lineno, const char *fmt, ...) {
  45         char msg[MAXMSGLEN];
  46         va_list ap;
  47
  48         va_start(ap, fmt);
  49         if (vsnprintf(msg, sizeof (msg), fmt, ap) == sizeof (msg))
  50                 msg[sizeof (msg) - 1] = '\0';
  51         va_end(ap);
  52 #ifdef NDEBUG
  53         printk(KERN_EMERG "%s", msg);
  54 #else
  55         spl_debug_msg(NULL, 0, 0,
  56              filename, functionname, lineno, "%s", msg);
  57 #endif
  58         spl_debug_bug(filename, functionname, lineno, 0);
  59         return 1;
  60 }
  61 EXPORT_SYMBOL(spl_PANIC);
  62
  63 void
  64 vpanic(const char *fmt, va_list ap)
  65 {
  66         char msg[MAXMSGLEN];
  67
  68         vsnprintf(msg, MAXMSGLEN - 1, fmt, ap);
  69         PANIC("%s", msg);
  70 } /* vpanic() */
  71 EXPORT_SYMBOL(vpanic);
  72
  73 void
  74 vcmn_err(int ce, const char *fmt, va_list ap)
  75 {
  76         char msg[MAXMSGLEN];
  77
  78         if (ce == CE_PANIC)
  79                 vpanic(fmt, ap);
  80
  81         if (ce != CE_NOTE) {
  82                 vsnprintf(msg, MAXMSGLEN - 1, fmt, ap);
  83
  84                 if (fmt[0] == '!')
  85                         SDEBUG(SD_INFO, "%s%s%s",
  86                                ce_prefix[ce], msg, ce_suffix[ce]);
  87                 else
  88                         SERROR("%s%s%s", ce_prefix[ce], msg, ce_suffix[ce]);
  89         }
  90 } /* vcmn_err() */
  91 EXPORT_SYMBOL(vcmn_err);
  92
  93 void
  94 cmn_err(int ce, const char *fmt, ...)
  95 {
  96         va_list ap;
  97
  98         va_start(ap, fmt);
  99         vcmn_err(ce, fmt, ap);
 100         va_end(ap);
 101 } /* cmn_err() */
 102 EXPORT_SYMBOL(cmn_err);
 103