src/server/util/libxattr.c

Fri, 20 Sep 2024 20:30:57 +0200

author
Olaf Wintermann <olaf.wintermann@gmail.com>
date
Fri, 20 Sep 2024 20:30:57 +0200
changeset 561
e1c92c126557
parent 480
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permissions
-rw-r--r--

add more keep alive trace logging

480
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1 /*
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2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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3 *
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4 * Copyright 2018 Olaf Wintermann. All rights reserved.
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5 *
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6 * Redistribution and use in source and binary forms, with or without
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7 * modification, are permitted provided that the following conditions are met:
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8 *
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9 * 1. Redistributions of source code must retain the above copyright
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10 * notice, this list of conditions and the following disclaimer.
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11 *
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12 * 2. Redistributions in binary form must reproduce the above copyright
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13 * notice, this list of conditions and the following disclaimer in the
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14 * documentation and/or other materials provided with the distribution.
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15 *
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16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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26 * POSSIBILITY OF SUCH DAMAGE.
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27 */
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28
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29 #define _GNU_SOURCE
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30
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31 #include <stdio.h>
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32 #include <stdlib.h>
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33
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34 #include "libxattr.h"
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35
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36 #include <errno.h>
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37 #include <sys/types.h>
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38
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39 #include <string.h>
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40
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41 #define LIST_BUF_LEN 1024
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42 #define LIST_ARRAY_LEN 8
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43 #define ATTR_BUF_LEN 1024
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44
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45 #define ARRAY_ADD(array, pos, len, obj) if(pos >= len) { \
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46 len *= 2; /* TODO: missing error handling for realloc() */ \
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47 array = realloc(array, len * sizeof(char*)); \
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48 } \
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49 array[pos] = obj; \
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50 pos++;
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51
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52 static void* libxattr_malloc(void *unused, size_t size) {
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53 return malloc(size);
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54 }
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55
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56 static void libxattr_free(void *unused, void *ptr) {
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57 free(ptr);
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58 }
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59
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60
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61 #ifdef __linux__
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62 #define XATTR_SUPPORTED
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63 #include <sys/xattr.h>
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64
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65 static char ** parse_xattrlist(char *buf, ssize_t length, ssize_t *nelm) {
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66 size_t arraylen = LIST_ARRAY_LEN;
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67 size_t arraypos = 0;
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68 char **array = malloc(LIST_ARRAY_LEN * sizeof(char*));
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69
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70 char *begin = buf;
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71 char *name = NULL;
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72 for(int i=0;i<length;i++) {
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73 if(!name && buf[i] == '.') {
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74 int nslen = (buf+i-begin);
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75 //printf("%.*s\n", nslen, begin);
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76 name = buf + i + 1;
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77 }
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78 if(buf[i] == '\0') {
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79 char *attrname = strdup(name);
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80 ARRAY_ADD(array, arraypos, arraylen, attrname);
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81 begin = buf + i + 1;
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82 name = 0;
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83 }
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84 }
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85
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86 if(arraypos == 0) {
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87 free(array);
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88 array = NULL;
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89 }
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90
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91 *nelm = arraypos;
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92 return array;
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93 }
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94
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95 char ** xattr_list(const char *path, ssize_t *nelm) {
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96 char *list = malloc(LIST_BUF_LEN);
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97 ssize_t len = listxattr(path, list, LIST_BUF_LEN);
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98 if(len == -1) {
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99 switch(errno) {
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100 case ERANGE: {
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101 // buffer too, get size of attribute list
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102 ssize_t newlen = listxattr(path, NULL, 0);
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103 if(newlen > 0) {
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104 // second try
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105 list = realloc(list, newlen);
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106 len = listxattr(path, list, newlen);
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107 if(len != -1) {
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108 // this time it worked
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109 break;
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110 }
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111 }
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112 }
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113 default: {
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114 free(list);
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115 *nelm = -1;
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116 return NULL;
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117 }
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118 }
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119 }
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120
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121 char **ret = parse_xattrlist(list, len, nelm);
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122 free(list);
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123 return ret;
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124 }
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125
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126 static char* name2nsname(const char *name) {
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127 // add the 'user' namespace to the name
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128 size_t namelen = strlen(name);
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129 char *attrname = malloc(8 + namelen);
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130 if(!attrname) {
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131 return NULL;
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132 }
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133 memcpy(attrname, "user.", 5);
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134 memcpy(attrname+5, name, namelen + 1);
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135 return attrname;
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136 }
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137
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138 char * xattr_get_alloc(
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139 void *pool,
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140 libxattr_malloc_func malloc_func,
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141 libxattr_free_func free_func,
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142 const char *path,
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143 const char *attr,
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144 ssize_t *len)
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145 {
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146 char *buf = malloc_func(pool, ATTR_BUF_LEN);
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147 if(!buf) {
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148 *len = -1;
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149 return NULL;
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150 }
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151
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152 char *attrname = name2nsname(attr);
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153 if(!attrname) {
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154 free_func(pool, buf);
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parents:
diff changeset
155 *len = -1;
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parents:
diff changeset
156 return NULL;
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parents:
diff changeset
157 }
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parents:
diff changeset
158
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parents:
diff changeset
159 ssize_t vlen = getxattr(path, attrname, buf, ATTR_BUF_LEN - 1);
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parents:
diff changeset
160 if(vlen < 0) {
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parents:
diff changeset
161 switch(errno) {
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parents:
diff changeset
162 case ERANGE: {
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parents:
diff changeset
163 ssize_t attrlen = getxattr(path, attrname, NULL, 0);
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parents:
diff changeset
164 if(attrlen > 0) {
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parents:
diff changeset
165 free_func(pool, buf);
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parents:
diff changeset
166 buf = malloc_func(pool, attrlen + 1);
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parents:
diff changeset
167 if(!buf) {
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parents:
diff changeset
168 free(attrname);
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parents:
diff changeset
169 *len = -1;
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parents:
diff changeset
170 return NULL;
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parents:
diff changeset
171 }
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parents:
diff changeset
172 vlen = getxattr(path, attrname, buf, attrlen);
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parents:
diff changeset
173 if(vlen > 0) {
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parents:
diff changeset
174 break;
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parents:
diff changeset
175 }
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parents:
diff changeset
176 }
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parents:
diff changeset
177 }
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parents:
diff changeset
178 default: {
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parents:
diff changeset
179 *len = -1;
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parents:
diff changeset
180 free_func(pool, buf);
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parents:
diff changeset
181 free(attrname);
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parents:
diff changeset
182 return NULL;
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parents:
diff changeset
183 }
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parents:
diff changeset
184 }
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parents:
diff changeset
185 }
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parents:
diff changeset
186 buf[vlen] = 0;
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parents:
diff changeset
187
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diff changeset
188 free(attrname);
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parents:
diff changeset
189 *len = vlen;
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parents:
diff changeset
190 return buf;
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parents:
diff changeset
191 }
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parents:
diff changeset
192
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parents:
diff changeset
193 int xattr_set(const char *path, const char *name, const void *value, size_t len) {
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parents:
diff changeset
194 char *attrname = name2nsname(name);
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parents:
diff changeset
195 int ret = setxattr(path, attrname, value, len, 0);
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parents:
diff changeset
196 free(attrname);
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parents:
diff changeset
197 return ret;
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parents:
diff changeset
198 }
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parents:
diff changeset
199
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parents:
diff changeset
200 int xattr_remove(const char *path, const char *name) {
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parents:
diff changeset
201 char *attrname = name2nsname(name);
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parents:
diff changeset
202 int ret = removexattr(path, attrname);
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parents:
diff changeset
203 free(attrname);
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parents:
diff changeset
204 return ret;
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parents:
diff changeset
205 }
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parents:
diff changeset
206
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parents:
diff changeset
207 #endif /* Linux */
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parents:
diff changeset
208
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parents:
diff changeset
209 #ifdef __APPLE__
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parents:
diff changeset
210 #define XATTR_SUPPORTED
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parents:
diff changeset
211 #include <sys/xattr.h>
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parents:
diff changeset
212
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parents:
diff changeset
213 static char ** parse_xattrlist(char *buf, ssize_t length, ssize_t *nelm) {
9f69e4b8b695 add libxattr
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parents:
diff changeset
214 size_t arraylen = LIST_ARRAY_LEN;
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parents:
diff changeset
215 size_t arraypos = 0;
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parents:
diff changeset
216 char **array = malloc(LIST_ARRAY_LEN * sizeof(char*));
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parents:
diff changeset
217
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parents:
diff changeset
218 char *name = buf;
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parents:
diff changeset
219 for(int i=0;i<length;i++) {
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parents:
diff changeset
220 if(buf[i] == '\0') {
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parents:
diff changeset
221 char *attrname = strdup(name);
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parents:
diff changeset
222 ARRAY_ADD(array, arraypos, arraylen, attrname);
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parents:
diff changeset
223 name = buf + i + 1;
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parents:
diff changeset
224 }
9f69e4b8b695 add libxattr
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parents:
diff changeset
225 }
9f69e4b8b695 add libxattr
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parents:
diff changeset
226
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parents:
diff changeset
227 if(arraypos == 0) {
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parents:
diff changeset
228 free(array);
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parents:
diff changeset
229 array = NULL;
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parents:
diff changeset
230 }
9f69e4b8b695 add libxattr
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parents:
diff changeset
231
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parents:
diff changeset
232 *nelm = arraypos;
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parents:
diff changeset
233 return array;
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
234 }
9f69e4b8b695 add libxattr
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parents:
diff changeset
235
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parents:
diff changeset
236 char ** xattr_list(const char *path, ssize_t *nelm) {
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
237 char *list = malloc(LIST_BUF_LEN);
9f69e4b8b695 add libxattr
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parents:
diff changeset
238 ssize_t len = listxattr(path, list, LIST_BUF_LEN, 0);
9f69e4b8b695 add libxattr
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parents:
diff changeset
239 if(len == -1) {
9f69e4b8b695 add libxattr
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parents:
diff changeset
240 switch(errno) {
9f69e4b8b695 add libxattr
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parents:
diff changeset
241 case ERANGE: {
9f69e4b8b695 add libxattr
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parents:
diff changeset
242 // buffer too, get size of attribute list
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parents:
diff changeset
243 ssize_t newlen = listxattr(path, NULL, 0, 0);
9f69e4b8b695 add libxattr
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parents:
diff changeset
244 if(newlen > 0) {
9f69e4b8b695 add libxattr
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parents:
diff changeset
245 // second try
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parents:
diff changeset
246 list = realloc(list, newlen);
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parents:
diff changeset
247 len = listxattr(path, list, newlen, 0);
9f69e4b8b695 add libxattr
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parents:
diff changeset
248 if(len != -1) {
9f69e4b8b695 add libxattr
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parents:
diff changeset
249 // this time it worked
9f69e4b8b695 add libxattr
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parents:
diff changeset
250 break;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
251 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
252 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
253 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
254 default: {
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
255 free(list);
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
256 *nelm = -1;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
257 return NULL;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
258 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
259 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
260 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
261
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
262 char **ret = parse_xattrlist(list, len, nelm);
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
263 free(list);
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
264 return ret;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
265 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
266
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
267 char * xattr_get_alloc(
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
268 void *pool,
9f69e4b8b695 add libxattr
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parents:
diff changeset
269 libxattr_malloc_func malloc_func,
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
270 libxattr_free_func free_func,
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parents:
diff changeset
271 const char *path,
9f69e4b8b695 add libxattr
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parents:
diff changeset
272 const char *attr,
9f69e4b8b695 add libxattr
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parents:
diff changeset
273 ssize_t *len)
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
274 {
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
275 // get attribute length
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parents:
diff changeset
276 ssize_t attrlen = getxattr(path, attr, NULL, 0, 0, 0);
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
277 if(attrlen < 0) {
9f69e4b8b695 add libxattr
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parents:
diff changeset
278 *len = -1;
9f69e4b8b695 add libxattr
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parents:
diff changeset
279 return NULL;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
280 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
281
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
282 char *buf = malloc_func(pool, attrlen + 1);
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
283 if(!buf) {
9f69e4b8b695 add libxattr
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parents:
diff changeset
284 *len = -1;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
285 return NULL;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
286 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
287
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
288 ssize_t vlen = getxattr(path, attr, buf, attrlen, 0, 0);
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
289 if(vlen < 0) {
9f69e4b8b695 add libxattr
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parents:
diff changeset
290 *len = -1;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
291 free_func(pool, buf);
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
292 return NULL;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
293 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
294 buf[attrlen] = 0;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
295
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
296 *len = vlen;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
297 return buf;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
298 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
299
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
300 int xattr_set(const char *path, const char *name, const void *value, size_t len) {
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
301 int ret = setxattr(path, name, value, len, 0, 0);
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
302 return ret;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
303 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
304
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
305 int xattr_remove(const char *path, const char *name) {
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
306 return removexattr(path, name, 0);
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
307 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
308
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
309 #endif /* Apple */
9f69e4b8b695 add libxattr
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parents:
diff changeset
310
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
311 #ifdef __sun
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parents:
diff changeset
312 #define XATTR_SUPPORTED
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parents:
diff changeset
313 #include <unistd.h>
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parents:
diff changeset
314 #include <sys/types.h>
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parents:
diff changeset
315 #include <sys/stat.h>
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parents:
diff changeset
316 #include <dirent.h>
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parents:
diff changeset
317 #include <fcntl.h>
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parents:
diff changeset
318
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parents:
diff changeset
319 static int open_attrfile(const char *path, const char *attr, int oflag) {
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parents:
diff changeset
320 int file = open(path, O_RDONLY);
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parents:
diff changeset
321 if(file == -1) {
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parents:
diff changeset
322 return -1;
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parents:
diff changeset
323 }
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parents:
diff changeset
324
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parents:
diff changeset
325 int attrfile = openat(file, attr, oflag, S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH);
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parents:
diff changeset
326 close(file);
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parents:
diff changeset
327 return attrfile;
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parents:
diff changeset
328 }
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parents:
diff changeset
329
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diff changeset
330 char ** xattr_list(const char *path, ssize_t *nelm) {
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parents:
diff changeset
331 *nelm = -1;
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parents:
diff changeset
332
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diff changeset
333 int attrdir = open_attrfile(path, ".", O_RDONLY|O_XATTR);
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parents:
diff changeset
334 if(attrdir == -1) {
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parents:
diff changeset
335 return NULL;
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parents:
diff changeset
336 }
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parents:
diff changeset
337
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parents:
diff changeset
338 DIR *dir = fdopendir(attrdir);
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parents:
diff changeset
339 if(!dir) {
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parents:
diff changeset
340 close(attrdir);
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diff changeset
341 return NULL;
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parents:
diff changeset
342 }
9f69e4b8b695 add libxattr
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parents:
diff changeset
343
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diff changeset
344 size_t arraylen = LIST_ARRAY_LEN;
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parents:
diff changeset
345 size_t arraypos = 0;
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parents:
diff changeset
346 char **array = malloc(LIST_ARRAY_LEN * sizeof(char*));
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parents:
diff changeset
347
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parents:
diff changeset
348 struct dirent *ent;
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parents:
diff changeset
349 while((ent = readdir(dir)) != NULL) {
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parents:
diff changeset
350 if(!strcmp(ent->d_name, ".") || !strcmp(ent->d_name, "..") || !strcmp(ent->d_name, "SUNWattr_ro") || !strcmp(ent->d_name, "SUNWattr_rw")) {
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parents:
diff changeset
351 continue;
9f69e4b8b695 add libxattr
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parents:
diff changeset
352 }
9f69e4b8b695 add libxattr
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parents:
diff changeset
353 char *name = strdup(ent->d_name);
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parents:
diff changeset
354 ARRAY_ADD(array, arraypos, arraylen, name);
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parents:
diff changeset
355 }
9f69e4b8b695 add libxattr
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parents:
diff changeset
356 closedir(dir);
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parents:
diff changeset
357
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parents:
diff changeset
358 *nelm = arraypos;
9f69e4b8b695 add libxattr
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parents:
diff changeset
359 return array;
9f69e4b8b695 add libxattr
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parents:
diff changeset
360 }
9f69e4b8b695 add libxattr
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parents:
diff changeset
361
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parents:
diff changeset
362 char * xattr_get_alloc(
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parents:
diff changeset
363 void *pool,
9f69e4b8b695 add libxattr
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parents:
diff changeset
364 libxattr_malloc_func malloc_func,
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
365 libxattr_free_func free_func,
9f69e4b8b695 add libxattr
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parents:
diff changeset
366 const char *path,
9f69e4b8b695 add libxattr
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parents:
diff changeset
367 const char *attr,
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parents:
diff changeset
368 ssize_t *len)
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
369 {
9f69e4b8b695 add libxattr
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parents:
diff changeset
370 *len = -1;
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parents:
diff changeset
371
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parents:
diff changeset
372 int attrfile = open_attrfile(path, attr, O_RDONLY|O_XATTR);
9f69e4b8b695 add libxattr
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parents:
diff changeset
373 if(attrfile == -1) {
9f69e4b8b695 add libxattr
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parents:
diff changeset
374 return NULL;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
375 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
376
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
377 struct stat s;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
378 if(fstat(attrfile, &s)) {
9f69e4b8b695 add libxattr
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parents:
diff changeset
379 close(attrfile);
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
380 return NULL;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
381 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
382
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
383 size_t bufsize = (size_t)s.st_size;
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parents:
diff changeset
384 char *buf = malloc_func(pool, bufsize);
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
385
9f69e4b8b695 add libxattr
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parents:
diff changeset
386 char *b = buf;
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
387 size_t cur = 0;
9f69e4b8b695 add libxattr
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parents:
diff changeset
388 while(cur < bufsize) {
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
389 ssize_t r = read(attrfile, buf + cur, bufsize - cur);
9f69e4b8b695 add libxattr
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parents:
diff changeset
390 if(r <= 0) {
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
391 break;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
392 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
393 cur += r;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
394 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
395
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
396 close(attrfile);
9f69e4b8b695 add libxattr
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parents:
diff changeset
397 if(cur != bufsize) {
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
398 free_func(pool, buf);
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
399 return NULL;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
400 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
401
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
402 *len = (ssize_t)bufsize;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
403 return buf;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
404 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
405
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
406 int xattr_set(const char *path, const char *name, const void *value, size_t len) {
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
407 int attrfile = open_attrfile(path, name, O_CREAT|O_WRONLY|O_XATTR|O_TRUNC);
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
408 if(attrfile == -1) {
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
409 return -1;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
410 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
411
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
412 const char *p = value;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
413 size_t remaining = len;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
414 while(remaining > 0) {
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
415 ssize_t w = write(attrfile, p, remaining);
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
416 if(w <= 0) {
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
417 break;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
418 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
419 p += w;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
420 remaining -= w;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
421 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
422
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
423 close(attrfile);
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
424
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
425 return remaining > 0 ? -1 : 0;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
426 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
427
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
428 int xattr_remove(const char *path, const char *name) {
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
429 int attrdir = open_attrfile(path, ".", O_RDONLY|O_XATTR);
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
430 if(attrdir == -1) {
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
431 return -1;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
432 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
433
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
434 int ret = unlinkat(attrdir, name, 0);
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
435 close(attrdir);
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
436 return ret;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
437 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
438
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
439 #endif /* Sun */
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
440
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
441
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
442 #ifdef __FreeBSD__
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
443 #define XATTR_SUPPORTED
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
444
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
445 #include <sys/types.h>
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
446 #include <sys/extattr.h>
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
447
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
448 static char ** parse_xattrlist(char *buf, ssize_t length, ssize_t *nelm) {
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
449 size_t arraylen = LIST_ARRAY_LEN;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
450 size_t arraypos = 0;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
451 char **array = malloc(LIST_ARRAY_LEN * sizeof(char*));
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
452
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
453 char *name = buf;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
454 for(int i=0;i<length;i++) {
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
455 char namelen = buf[i];
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
456 char *name = buf + i + 1;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
457 char *attrname = malloc(namelen + 1);
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
458 memcpy(attrname, name, namelen);
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
459 attrname[namelen] = 0;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
460 ARRAY_ADD(array, arraypos, arraylen, attrname);
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
461 i += namelen;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
462 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
463
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
464 if(arraypos == 0) {
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
465 free(array);
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
466 array = NULL;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
467 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
468
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
469 *nelm = arraypos;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
470 return array;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
471 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
472
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
473 char ** xattr_list(const char *path, ssize_t *nelm) {
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
474 *nelm = -1;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
475 ssize_t lslen = extattr_list_file(path, EXTATTR_NAMESPACE_USER, NULL, 0);
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
476 if(lslen <= 0) {
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
477 if(lslen == 0) {
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
478 *nelm = 0;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
479 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
480 return NULL;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
481 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
482
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
483 char *list = malloc(lslen);
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
484 ssize_t len = extattr_list_file(path, EXTATTR_NAMESPACE_USER, list, lslen);
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
485 if(len == -1) {
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
486 free(list);
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
487 return NULL;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
488 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
489
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
490 char **ret = parse_xattrlist(list, len, nelm);
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
491 free(list);
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
492 return ret;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
493 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
494
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
495 char * xattr_get_alloc(
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
496 void *pool,
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
497 libxattr_malloc_func malloc_func,
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
498 libxattr_free_func free_func,
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
499 const char *path,
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
500 const char *attr,
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
501 ssize_t *len)
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
502 {
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
503 // get attribute length
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
504 ssize_t attrlen = extattr_get_file(path, EXTATTR_NAMESPACE_USER, attr, NULL, 0);
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
505 if(attrlen < 0) {
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
506 *len = -1;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
507 return NULL;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
508 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
509
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
510 char *buf = malloc_func(pool, attrlen + 1);
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
511 ssize_t vlen = extattr_get_file(path, EXTATTR_NAMESPACE_USER, attr, buf, attrlen);
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
512 if(vlen < 0) {
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
513 *len = -1;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
514 free_func(pool, buf);
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
515 return NULL;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
516 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
517 buf[attrlen] = 0;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
518
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
519 *len = vlen;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
520 return buf;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
521 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
522
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
523 int xattr_set(const char *path, const char *name, const void *value, size_t len) {
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
524 int ret = extattr_set_file(path, EXTATTR_NAMESPACE_USER, name, value, len);
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
525 return ret;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
526 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
527
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
528 int xattr_remove(const char *path, const char *name) {
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
529 return extattr_delete_file(path, EXTATTR_NAMESPACE_USER, name);
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
530 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
531
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
532 #endif /* FreeBSD */
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
533
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
534
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
535 #ifndef XATTR_SUPPORTED
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
536
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
537 char ** xattr_list(const char *path, ssize_t *nelm) {
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
538 *nelm = -1;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
539 return NULL;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
540 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
541
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
542 char * xattr_get_alloc(
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
543 void *pool,
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
544 libxattr_malloc_func malloc_func,
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
545 libxattr_free_func free_func,
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
546 const char *path,
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
547 const char *attr,
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
548 ssize_t *len)
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
549 {
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
550 *len = -1;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
551 return NULL;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
552 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
553
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
554 int xattr_set(const char *path, const char *name, const void *value, size_t len) {
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
555 return -1;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
556 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
557
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
558 int xattr_remove(const char *path, const char *name) {
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
559 return -1;
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
560 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
561
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
562 #endif /* unsupported platform */
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
563
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
564
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
565 char * xattr_get(const char *path, const char *attr, ssize_t *len) {
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
566 return xattr_get_alloc(NULL, libxattr_malloc, libxattr_free, path, attr, len);
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
567 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
568
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
569 void xattr_free_list(char **attrnames, ssize_t nelm) {
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
570 if(attrnames) {
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
571 for(int i=0;i<nelm;i++) {
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
572 free(attrnames[i]);
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
573 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
574 free(attrnames);
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
575 }
9f69e4b8b695 add libxattr
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
576 }

mercurial