1 /* EINA - EFL data type library
2 * Copyright (C) 2011 Cedric Bail
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library;
16 * if not, see <http://www.gnu.org/licenses/>.
24 #include <sys/types.h>
29 # include <sys/xattr.h>
32 #include "eina_config.h"
33 #include "eina_private.h"
35 #include "eina_safety_checks.h"
36 #include "eina_xattr.h"
37 #include "eina_convert.h"
38 #include "eina_stringshare.h"
40 /*============================================================================*
42 *============================================================================*/
48 typedef struct _Eina_Xattr_Iterator Eina_Xattr_Iterator;
50 struct _Eina_Xattr_Iterator
52 Eina_Iterator iterator;
67 _eina_xattr_value_ls_fd_iterator_next(Eina_Xattr_Iterator *it, void **data)
71 if (it->offset >= it->length)
75 it->attr->name = it->xattr + it->offset;
77 it->attr->length = fgetxattr(it->fd, it->attr->name, NULL, 0);
80 tmp = realloc((void*) it->attr->value, it->attr->length);
83 free((void*) it->attr->value);
84 it->attr->value = NULL;
89 it->attr->length = fgetxattr(it->fd, it->attr->name,
90 (void *) it->attr->value,
99 _eina_xattr_value_ls_iterator_next(Eina_Xattr_Iterator *it, void **data)
103 if (it->offset >= it->length)
107 it->attr->name = it->xattr + it->offset;
109 it->attr->length = getxattr(it->file, it->attr->name, NULL, 0);
110 if (it->attr->length)
112 tmp = realloc((void*) it->attr->value, it->attr->length);
115 free((void*) it->attr->value);
116 it->attr->value = NULL;
117 it->attr->length = 0;
121 it->attr->length = getxattr(it->file, it->attr->name,
122 (void*) it->attr->value,
131 _eina_xattr_ls_iterator_next(Eina_Xattr_Iterator *it, void **data)
133 if (it->offset >= it->length)
136 *data = it->xattr + it->offset;
137 it->offset += strlen(it->xattr + it->offset) + 1;
143 _eina_xattr_ls_iterator_container(Eina_Xattr_Iterator *it __UNUSED__)
149 _eina_xattr_ls_iterator_free(Eina_Xattr_Iterator *it)
151 EINA_MAGIC_SET(&it->iterator, 0);
152 if (it->attr) free((void *) it->attr->value);
153 eina_stringshare_del(it->file);
164 /*============================================================================*
166 *============================================================================*/
169 /*============================================================================*
171 *============================================================================*/
174 eina_xattr_value_fd_ls(int fd)
177 Eina_Xattr_Iterator *it;
180 if (fd < 0) return NULL;
182 length = flistxattr(fd, NULL, 0);
183 if (length <= 0) return NULL;
185 it = calloc(1, sizeof (Eina_Xattr_Iterator) + length - 1);
186 if (!it) return NULL;
188 it->attr = calloc(1, sizeof (Eina_Xattr));
195 EINA_MAGIC_SET(&it->iterator, EINA_MAGIC_ITERATOR);
198 it->length = flistxattr(fd, it->xattr, length);
199 if (it->length != length)
205 it->iterator.version = EINA_ITERATOR_VERSION;
206 it->iterator.next = FUNC_ITERATOR_NEXT(_eina_xattr_value_ls_fd_iterator_next);
207 it->iterator.get_container = FUNC_ITERATOR_GET_CONTAINER(_eina_xattr_ls_iterator_container);
208 it->iterator.free = FUNC_ITERATOR_FREE(_eina_xattr_ls_iterator_free);
210 return &it->iterator;
218 eina_xattr_fd_ls(int fd)
221 Eina_Xattr_Iterator *it;
224 if (fd < 0) return NULL;
226 length = flistxattr(fd, NULL, 0);
227 if (length <= 0) return NULL;
229 it = calloc(1, sizeof (Eina_Xattr_Iterator) + length - 1);
230 if (!it) return NULL;
232 EINA_MAGIC_SET(&it->iterator, EINA_MAGIC_ITERATOR);
234 it->length = flistxattr(fd, it->xattr, length);
235 if (it->length != length)
241 it->iterator.version = EINA_ITERATOR_VERSION;
242 it->iterator.next = FUNC_ITERATOR_NEXT(_eina_xattr_ls_iterator_next);
243 it->iterator.get_container = FUNC_ITERATOR_GET_CONTAINER(_eina_xattr_ls_iterator_container);
244 it->iterator.free = FUNC_ITERATOR_FREE(_eina_xattr_ls_iterator_free);
246 return &it->iterator;
254 eina_xattr_ls(const char *file)
257 Eina_Xattr_Iterator *it;
260 EINA_SAFETY_ON_NULL_RETURN_VAL(file, NULL);
262 length = listxattr(file, NULL, 0);
263 if (length <= 0) return NULL;
265 it = calloc(1, sizeof (Eina_Xattr_Iterator) + length - 1);
266 if (!it) return NULL;
268 EINA_MAGIC_SET(&it->iterator, EINA_MAGIC_ITERATOR);
270 it->length = listxattr(file, it->xattr, length);
271 if (it->length != length)
277 it->iterator.version = EINA_ITERATOR_VERSION;
278 it->iterator.next = FUNC_ITERATOR_NEXT(_eina_xattr_ls_iterator_next);
279 it->iterator.get_container = FUNC_ITERATOR_GET_CONTAINER(_eina_xattr_ls_iterator_container);
280 it->iterator.free = FUNC_ITERATOR_FREE(_eina_xattr_ls_iterator_free);
282 return &it->iterator;
290 eina_xattr_value_ls(const char *file)
293 Eina_Xattr_Iterator *it;
296 EINA_SAFETY_ON_NULL_RETURN_VAL(file, NULL);
298 length = listxattr(file, NULL, 0);
299 if (length <= 0) return NULL;
301 it = calloc(1, sizeof (Eina_Xattr_Iterator) + length - 1);
302 if (!it) return NULL;
304 EINA_MAGIC_SET(&it->iterator, EINA_MAGIC_ITERATOR);
306 it->length = listxattr(file, it->xattr, length);
307 if (it->length != length)
313 it->file = eina_stringshare_add(file);
315 it->iterator.version = EINA_ITERATOR_VERSION;
316 it->iterator.next = FUNC_ITERATOR_NEXT(_eina_xattr_value_ls_iterator_next);
317 it->iterator.get_container = FUNC_ITERATOR_GET_CONTAINER(_eina_xattr_ls_iterator_container);
318 it->iterator.free = FUNC_ITERATOR_FREE(_eina_xattr_ls_iterator_free);
320 return &it->iterator;
328 eina_xattr_get(const char *file, const char *attribute, ssize_t *size)
334 EINA_SAFETY_ON_NULL_RETURN_VAL(file, NULL);
335 EINA_SAFETY_ON_NULL_RETURN_VAL(attribute, NULL);
336 EINA_SAFETY_ON_TRUE_RETURN_VAL(!size, NULL);
338 *size = getxattr(file, attribute, NULL, 0);
339 /* Size should be less than 2MB (already huge in my opinion) */
340 if (!(*size > 0 && *size < 2 * 1024 * 1024))
344 if (!ret) return NULL;
346 tmp = getxattr(file, attribute, ret, *size);
357 EINA_SAFETY_ON_TRUE_RETURN_VAL(!size, NULL);
366 eina_xattr_set(const char *file, const char *attribute, const void *data, ssize_t length, Eina_Xattr_Flags flags)
371 EINA_SAFETY_ON_NULL_RETURN_VAL(file, EINA_FALSE);
372 EINA_SAFETY_ON_NULL_RETURN_VAL(attribute, EINA_FALSE);
373 EINA_SAFETY_ON_NULL_RETURN_VAL(data, EINA_FALSE);
374 EINA_SAFETY_ON_TRUE_RETURN_VAL(!(length > 0 && length < 2 * 1024 * 1024), EINA_FALSE);
378 case EINA_XATTR_INSERT: iflags = 0; break;
379 case EINA_XATTR_REPLACE: iflags = XATTR_REPLACE; break;
380 case EINA_XATTR_CREATED: iflags = XATTR_CREATE; break;
385 if (setxattr(file, attribute, data, length, iflags))
399 eina_xattr_string_set(const char *file, const char *attribute, const char *data, Eina_Xattr_Flags flags)
401 EINA_SAFETY_ON_NULL_RETURN_VAL(data, EINA_FALSE);
403 return eina_xattr_set(file, attribute, data, strlen(data) + 1, flags);
407 eina_xattr_string_get(const char *file, const char *attribute)
412 tmp = eina_xattr_get(file, attribute, &size);
413 if (!tmp) return NULL;
415 if (tmp[size - 1] != '\0')
425 eina_xattr_double_set(const char *file, const char *attribute, double value, Eina_Xattr_Flags flags)
429 eina_convert_dtoa(value, buffer);
430 return eina_xattr_string_set(file, attribute, buffer, flags);
434 eina_xattr_double_get(const char *file, const char *attribute, double *value)
440 EINA_SAFETY_ON_NULL_RETURN_VAL(value, EINA_FALSE);
442 tmp = eina_xattr_string_get(file, attribute);
443 if (!tmp) return EINA_FALSE;
445 if (!eina_convert_atod(tmp, strlen(tmp), &m, &e))
451 *value = ldexp((double)m, e);
458 eina_xattr_int_set(const char *file, const char *attribute, int value, Eina_Xattr_Flags flags)
462 eina_convert_itoa(value, buffer);
463 return eina_xattr_string_set(file, attribute, buffer, flags);
467 eina_xattr_int_get(const char *file, const char *attribute, int *value)
473 EINA_SAFETY_ON_NULL_RETURN_VAL(value, EINA_FALSE);
475 tmp = eina_xattr_string_get(file, attribute);
476 if (!tmp) return EINA_FALSE;
478 *value = (int) strtol(tmp, &eos, 10);
479 result = (*eos == '\0');