src/warning.c

   1 /* This file is part of GNU tar.
   2
   3    Copyright (C) 2009, 2012 Free Software Foundation, Inc.
   4
   5    This program is free software; you can redistribute it and/or modify it
   6    under the terms of the GNU General Public License as published by the
   7    Free Software Foundation; either version 3, or (at your option) any later
   8    version.
   9
  10    This program is distributed in the hope that it will be useful, but
  11    WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
  13    Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License along
  16    with this program.  If not, see <http://www.gnu.org/licenses/>. */
  17
  18 #include <system.h>
  19 #include <argmatch.h>
  20
  21 #include "common.h"
  22
  23 static char const *const warning_args[] = {
  24   "all",
  25   "alone-zero-block",
  26   "bad-dumpdir",
  27   "cachedir",
  28   "contiguous-cast",
  29   "file-changed",
  30   "file-ignored",
  31   "file-removed",
  32   "file-shrank",
  33   "file-unchanged",
  34   "filename-with-nuls",
  35   "ignore-archive",
  36   "ignore-newer",
  37   "new-directory",
  38   "rename-directory",
  39   "symlink-cast",
  40   "timestamp",
  41   "unknown-cast",
  42   "unknown-keyword",
  43   "xdev",
  44   "decompress-program",
  45   "existing-file",
  46   "xattr-write",
  47   NULL
  48 };
  49
  50 static int warning_types[] = {
  51   WARN_ALL,
  52   WARN_ALONE_ZERO_BLOCK,
  53   WARN_BAD_DUMPDIR,
  54   WARN_CACHEDIR,
  55   WARN_CONTIGUOUS_CAST,
  56   WARN_FILE_CHANGED,
  57   WARN_FILE_IGNORED,
  58   WARN_FILE_REMOVED,
  59   WARN_FILE_SHRANK,
  60   WARN_FILE_UNCHANGED,
  61   WARN_FILENAME_WITH_NULS,
  62   WARN_IGNORE_ARCHIVE,
  63   WARN_IGNORE_NEWER,
  64   WARN_NEW_DIRECTORY,
  65   WARN_RENAME_DIRECTORY,
  66   WARN_SYMLINK_CAST,
  67   WARN_TIMESTAMP,
  68   WARN_UNKNOWN_CAST,
  69   WARN_UNKNOWN_KEYWORD,
  70   WARN_XDEV,
  71   WARN_DECOMPRESS_PROGRAM,
  72   WARN_EXISTING_FILE,
  73   WARN_XATTR_WRITE
  74 };
  75
  76 ARGMATCH_VERIFY (warning_args, warning_types);
  77
  78 int warning_option = WARN_ALL;
  79
  80 void
  81 set_warning_option (const char *arg)
  82 {
  83   int negate = 0;
  84   int option;
  85
  86   if (strcmp (arg, "none") == 0)
  87     {
  88       warning_option = 0;
  89       return;
  90     }
  91   if (strlen (arg) > 2 && memcmp (arg, "no-", 3) == 0)
  92     {
  93       negate = 1;
  94       arg += 3;
  95     }
  96
  97   option = XARGMATCH ("--warning", arg,
  98                       warning_args, warning_types);
  99   if (negate)
 100     warning_option &= ~option;
 101   else
 102     warning_option |= option;
 103 }