Dogcows Code - chaz/tar/blob - lib/xattr-at.c

   1 /* openat-style fd-relative functions for operating with extended file
   2    attributes.
   3
   4    Copyright 2012-2014 Free Software Foundation, Inc.
   5
   6    This program is free software: you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation, either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  18
  19 #include <config.h>
  20
  21 #include "xattr-at.h"
  22 #include "openat.h"
  23
  24 #include <stdlib.h>
  25 #include <unistd.h>
  26 #include <errno.h>
  27 #include <fcntl.h>
  28
  29 #include "dirname.h" /* solely for definition of IS_ABSOLUTE_FILE_NAME */
  30 #include "save-cwd.h"
  31
  32 #include "openat-priv.h"
  33
  34 /* setxattrat */
  35 #define AT_FUNC_NAME setxattrat
  36 #define AT_FUNC_F1 setxattr
  37 #define AT_FUNC_POST_FILE_PARAM_DECLS   , const char *name, const void *value \
  38                                         , size_t size, int flags
  39 #define AT_FUNC_POST_FILE_ARGS          , name, value, size, flags
  40 #include "at-func.c"
  41 #undef AT_FUNC_NAME
  42 #undef AT_FUNC_F1
  43 #undef AT_FUNC_POST_FILE_PARAM_DECLS
  44 #undef AT_FUNC_POST_FILE_ARGS
  45
  46 /* lsetxattrat */
  47 #define AT_FUNC_NAME lsetxattrat
  48 #define AT_FUNC_F1 lsetxattr
  49 #define AT_FUNC_POST_FILE_PARAM_DECLS   , const char *name, const void *value \
  50                                         , size_t size, int flags
  51 #define AT_FUNC_POST_FILE_ARGS          , name, value, size, flags
  52 #include "at-func.c"
  53 #undef AT_FUNC_NAME
  54 #undef AT_FUNC_F1
  55 #undef AT_FUNC_POST_FILE_PARAM_DECLS
  56 #undef AT_FUNC_POST_FILE_ARGS
  57
  58 /* getxattrat */
  59 #define AT_FUNC_NAME getxattrat
  60 #define AT_FUNC_RESULT ssize_t
  61 #define AT_FUNC_F1 getxattr
  62 #define AT_FUNC_POST_FILE_PARAM_DECLS   , const char *name, void *value \
  63                                         , size_t size
  64 #define AT_FUNC_POST_FILE_ARGS          , name, value, size
  65 #include "at-func.c"
  66 #undef AT_FUNC_NAME
  67 #undef AT_FUNC_F1
  68 #undef AT_FUNC_RESULT
  69 #undef AT_FUNC_POST_FILE_PARAM_DECLS
  70 #undef AT_FUNC_POST_FILE_ARGS
  71
  72 /* lgetxattrat */
  73 #define AT_FUNC_NAME lgetxattrat
  74 #define AT_FUNC_RESULT ssize_t
  75 #define AT_FUNC_F1 lgetxattr
  76 #define AT_FUNC_POST_FILE_PARAM_DECLS   , const char *name, void *value \
  77                                         , size_t size
  78 #define AT_FUNC_POST_FILE_ARGS          , name, value, size
  79 #include "at-func.c"
  80 #undef AT_FUNC_NAME
  81 #undef AT_FUNC_F1
  82 #undef AT_FUNC_RESULT
  83 #undef AT_FUNC_POST_FILE_PARAM_DECLS
  84 #undef AT_FUNC_POST_FILE_ARGS
  85
  86 /* listxattrat */
  87 #define AT_FUNC_NAME listxattrat
  88 #define AT_FUNC_RESULT ssize_t
  89 #define AT_FUNC_F1 listxattr
  90 #define AT_FUNC_POST_FILE_PARAM_DECLS   , char *list , size_t size
  91 #define AT_FUNC_POST_FILE_ARGS          , list , size
  92 #include "at-func.c"
  93 #undef AT_FUNC_NAME
  94 #undef AT_FUNC_F1
  95 #undef AT_FUNC_RESULT
  96 #undef AT_FUNC_POST_FILE_PARAM_DECLS
  97 #undef AT_FUNC_POST_FILE_ARGS
  98
  99 /* llistxattrat */
 100 #define AT_FUNC_NAME llistxattrat
 101 #define AT_FUNC_RESULT ssize_t
 102 #define AT_FUNC_F1 llistxattr
 103 #define AT_FUNC_POST_FILE_PARAM_DECLS   , char *list , size_t size
 104 #define AT_FUNC_POST_FILE_ARGS          , list , size
 105 #include "at-func.c"
 106 #undef AT_FUNC_NAME
 107 #undef AT_FUNC_F1
 108 #undef AT_FUNC_RESULT
 109 #undef AT_FUNC_POST_FILE_PARAM_DECLS
 110 #undef AT_FUNC_POST_FILE_ARGS