libspfs/error.c

   1 /*
   2  * Copyright (C) 2006 by Latchesar Ionkov <lucho@ionkov.net>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * LATCHESAR IONKOV AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  19  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  20  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  21  * DEALINGS IN THE SOFTWARE.
  22  */
  23 #include <stdlib.h>
  24 #include <stdio.h>
  25 #include <string.h>
  26 #include <errno.h>
  27 #include <stdarg.h>
  28 #include "spfs.h"
  29
  30 char *Enomem = "not enough memory";
  31
  32 /* vasprintf fails on some RHEL distros ... hence the static */
  33 static char sp_ename[1024];
  34 static int sp_ecode;
  35
  36 void *
  37 sp_malloc(int size)
  38 {
  39         void *ret;
  40
  41         ret = malloc(size);
  42         if (!ret)
  43                 sp_werror(Enomem, ENOMEM);
  44
  45         return ret;
  46 }
  47
  48 static void
  49 sp_vwerror(char *ename, int ecode, va_list ap)
  50 {
  51         sp_ecode = ecode;
  52         if (ename) {
  53                 vsnprintf(sp_ename, sizeof(sp_ename), ename, ap);
  54         }
  55 }
  56
  57 void
  58 sp_werror(char *ename, int ecode, ...)
  59 {
  60         va_list ap;
  61
  62         va_start(ap, ecode);
  63         sp_vwerror(ename, ecode, ap);
  64         va_end(ap);
  65 }
  66
  67 void
  68 sp_rerror(char **ename, int *ecode)
  69 {
  70         *ename = NULL;
  71         if (sp_ecode)
  72                 *ename = sp_ename;
  73         *ecode = sp_ecode;
  74 }
  75
  76 int
  77 sp_haserror()
  78 {
  79         return sp_ecode != 0;
  80 }
  81
  82 void
  83 sp_uerror(int ecode)
  84 {
  85         char *ename;
  86
  87         ename = strerror(ecode);
  88         sp_werror(ename, ecode);
  89 }
  90
  91 void
  92 sp_suerror(char *s, int ecode)
  93 {
  94         char err[256];
  95         char buf[512];
  96
  97         strerror_r(ecode, err, sizeof(err));
  98         snprintf(buf, sizeof(buf), "%s: %s", s, err);
  99         sp_werror(buf, ecode);
 100 }