forked from enlightenment/efl
685 lines
16 KiB
C
685 lines
16 KiB
C
/* EINA - EFL data type library
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* Copyright (C) 2011 Cedric Bail
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library;
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* if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <stdlib.h>
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#include <sys/types.h>
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#include <string.h>
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#include <unistd.h>
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#include <math.h>
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#ifdef HAVE_XATTR
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# include <sys/xattr.h>
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#endif
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#include <fcntl.h>
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#include "eina_config.h"
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#include "eina_private.h"
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#include "eina_safety_checks.h"
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#include "eina_xattr.h"
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#include "eina_convert.h"
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#include "eina_stringshare.h"
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/*============================================================================*
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* Local *
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*============================================================================*/
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/**
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* @cond LOCAL
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*/
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typedef struct _Eina_Xattr_Iterator Eina_Xattr_Iterator;
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struct _Eina_Xattr_Iterator
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{
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Eina_Iterator iterator;
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const char *file;
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Eina_Xattr *attr;
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ssize_t length;
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ssize_t offset;
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int fd;
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char xattr[1];
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};
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#ifdef HAVE_XATTR
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static Eina_Bool
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_eina_xattr_value_ls_fd_iterator_next(Eina_Xattr_Iterator *it, void **data)
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{
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char *tmp;
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if (it->offset >= it->length)
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return EINA_FALSE;
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*data = it->attr;
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it->attr->name = it->xattr + it->offset;
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it->offset += strlen(it->attr->name) + 1;
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it->attr->length = fgetxattr(it->fd, it->attr->name, NULL, 0);
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if (it->attr->length > 0)
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{
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tmp = realloc((void*) it->attr->value, it->attr->length + 1);
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if (!tmp)
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{
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free((void*) it->attr->value);
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it->attr->value = NULL;
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it->attr->length = 0;
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}
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else
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{
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it->attr->value = tmp;
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it->attr->length = fgetxattr(it->fd, it->attr->name,
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(void *) it->attr->value,
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it->attr->length);
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tmp[it->attr->length] = '\0';
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}
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}
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return EINA_TRUE;
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}
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static Eina_Bool
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_eina_xattr_value_ls_iterator_next(Eina_Xattr_Iterator *it, void **data)
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{
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char *tmp;
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if (it->offset >= it->length)
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return EINA_FALSE;
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*data = it->attr;
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it->attr->name = it->xattr + it->offset;
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it->offset += strlen(it->attr->name) + 1;
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it->attr->length = getxattr(it->file, it->attr->name, NULL, 0);
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if (it->attr->length > 0)
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{
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tmp = realloc((void*) it->attr->value, it->attr->length + 1);
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if (!tmp)
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{
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free((void*) it->attr->value);
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it->attr->value = NULL;
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it->attr->length = 0;
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}
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else
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{
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it->attr->value = tmp;
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it->attr->length = getxattr(it->file, it->attr->name,
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(void*) it->attr->value,
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it->attr->length);
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tmp[it->attr->length] = '\0';
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}
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}
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return EINA_TRUE;
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}
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static Eina_Bool
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_eina_xattr_ls_iterator_next(Eina_Xattr_Iterator *it, void **data)
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{
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if (it->offset >= it->length)
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return EINA_FALSE;
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*data = it->xattr + it->offset;
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it->offset += strlen(it->xattr + it->offset) + 1;
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return EINA_TRUE;
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}
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static void *
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_eina_xattr_ls_iterator_container(Eina_Xattr_Iterator *it EINA_UNUSED)
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{
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return NULL;
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}
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static void
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_eina_xattr_ls_iterator_free(Eina_Xattr_Iterator *it)
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{
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EINA_MAGIC_SET(&it->iterator, 0);
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if (it->attr) free((void *) it->attr->value);
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eina_stringshare_del(it->file);
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free(it->attr);
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free(it);
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}
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#endif
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/**
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* @endcond
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*/
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/*============================================================================*
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* Global *
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*============================================================================*/
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/*============================================================================*
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* API *
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*============================================================================*/
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EAPI Eina_Iterator *
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eina_xattr_value_fd_ls(int fd)
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{
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#ifdef HAVE_XATTR
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Eina_Xattr_Iterator *it;
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ssize_t length;
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if (fd < 0) return NULL;
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length = flistxattr(fd, NULL, 0);
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if (length <= 0) return NULL;
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it = calloc(1, sizeof (Eina_Xattr_Iterator) + length - 1);
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if (!it) return NULL;
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it->attr = calloc(1, sizeof (Eina_Xattr));
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if (!it->attr)
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{
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free(it);
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return NULL;
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}
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EINA_MAGIC_SET(&it->iterator, EINA_MAGIC_ITERATOR);
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it->fd = fd;
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it->length = flistxattr(fd, it->xattr, length);
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if (it->length != length)
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{
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free(it);
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return NULL;
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}
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it->iterator.version = EINA_ITERATOR_VERSION;
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it->iterator.next = FUNC_ITERATOR_NEXT(_eina_xattr_value_ls_fd_iterator_next);
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it->iterator.get_container = FUNC_ITERATOR_GET_CONTAINER(_eina_xattr_ls_iterator_container);
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it->iterator.free = FUNC_ITERATOR_FREE(_eina_xattr_ls_iterator_free);
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return &it->iterator;
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#else
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return NULL;
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(void)fd;
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#endif
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}
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EAPI Eina_Iterator *
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eina_xattr_fd_ls(int fd)
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{
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#ifdef HAVE_XATTR
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Eina_Xattr_Iterator *it;
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ssize_t length;
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if (fd < 0) return NULL;
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length = flistxattr(fd, NULL, 0);
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if (length <= 0) return NULL;
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it = calloc(1, sizeof (Eina_Xattr_Iterator) + length - 1);
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if (!it) return NULL;
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EINA_MAGIC_SET(&it->iterator, EINA_MAGIC_ITERATOR);
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it->length = flistxattr(fd, it->xattr, length);
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if (it->length != length)
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{
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free(it);
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return NULL;
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}
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it->iterator.version = EINA_ITERATOR_VERSION;
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it->iterator.next = FUNC_ITERATOR_NEXT(_eina_xattr_ls_iterator_next);
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it->iterator.get_container = FUNC_ITERATOR_GET_CONTAINER(_eina_xattr_ls_iterator_container);
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it->iterator.free = FUNC_ITERATOR_FREE(_eina_xattr_ls_iterator_free);
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return &it->iterator;
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#else
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return NULL;
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(void)fd;
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#endif
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}
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EAPI Eina_Iterator *
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eina_xattr_ls(const char *file)
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{
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#ifdef HAVE_XATTR
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Eina_Xattr_Iterator *it;
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ssize_t length;
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EINA_SAFETY_ON_NULL_RETURN_VAL(file, NULL);
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length = listxattr(file, NULL, 0);
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if (length <= 0) return NULL;
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it = calloc(1, sizeof (Eina_Xattr_Iterator) + length - 1);
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if (!it) return NULL;
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EINA_MAGIC_SET(&it->iterator, EINA_MAGIC_ITERATOR);
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it->length = listxattr(file, it->xattr, length);
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if (it->length != length)
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{
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free(it);
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return NULL;
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}
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it->iterator.version = EINA_ITERATOR_VERSION;
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it->iterator.next = FUNC_ITERATOR_NEXT(_eina_xattr_ls_iterator_next);
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it->iterator.get_container = FUNC_ITERATOR_GET_CONTAINER(_eina_xattr_ls_iterator_container);
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it->iterator.free = FUNC_ITERATOR_FREE(_eina_xattr_ls_iterator_free);
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return &it->iterator;
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#else
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return NULL;
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(void)file;
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#endif
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}
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EAPI Eina_Iterator *
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eina_xattr_value_ls(const char *file)
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{
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#ifdef HAVE_XATTR
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Eina_Xattr_Iterator *it;
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ssize_t length;
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EINA_SAFETY_ON_NULL_RETURN_VAL(file, NULL);
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length = listxattr(file, NULL, 0);
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if (length <= 0) return NULL;
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it = calloc(1, sizeof (Eina_Xattr_Iterator) + length - 1);
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if (!it) return NULL;
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it->attr = calloc(1, sizeof (Eina_Xattr));
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if (!it->attr)
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{
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free(it);
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return NULL;
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}
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EINA_MAGIC_SET(&it->iterator, EINA_MAGIC_ITERATOR);
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it->length = listxattr(file, it->xattr, length);
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if (it->length != length)
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{
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free(it->attr);
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free(it);
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return NULL;
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}
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it->file = eina_stringshare_add(file);
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it->iterator.version = EINA_ITERATOR_VERSION;
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it->iterator.next = FUNC_ITERATOR_NEXT(_eina_xattr_value_ls_iterator_next);
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it->iterator.get_container = FUNC_ITERATOR_GET_CONTAINER(_eina_xattr_ls_iterator_container);
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it->iterator.free = FUNC_ITERATOR_FREE(_eina_xattr_ls_iterator_free);
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return &it->iterator;
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#else
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return NULL;
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(void)file;
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#endif
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}
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EAPI void *
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eina_xattr_get(const char *file, const char *attribute, ssize_t *size)
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{
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#ifdef HAVE_XATTR
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char *ret = NULL;
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ssize_t tmp;
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EINA_SAFETY_ON_NULL_RETURN_VAL(file, NULL);
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EINA_SAFETY_ON_NULL_RETURN_VAL(attribute, NULL);
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EINA_SAFETY_ON_NULL_RETURN_VAL(size, NULL);
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*size = getxattr(file, attribute, NULL, 0);
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/* Size should be less than 2MB (already huge in my opinion) */
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if (!(*size > 0 && *size < 2 * 1024 * 1024))
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goto on_error;
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ret = malloc(*size + 1);
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if (!ret) goto on_error;
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tmp = getxattr(file, attribute, ret, *size);
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if (tmp != *size)
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goto on_error;
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ret[tmp] = '\0';
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return ret;
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on_error:
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free(ret);
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*size = 0;
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return NULL;
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#else
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EINA_SAFETY_ON_TRUE_RETURN_VAL(!size, NULL);
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*size = 0;
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return NULL;
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(void)file;
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(void)attribute;
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#endif
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}
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EAPI void *
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eina_xattr_fd_get(int fd, const char *attribute, ssize_t *size)
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{
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#ifdef HAVE_XATTR
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char *ret = NULL;
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ssize_t tmp;
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EINA_SAFETY_ON_NULL_RETURN_VAL(attribute, NULL);
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EINA_SAFETY_ON_NULL_RETURN_VAL(size, NULL);
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*size = fgetxattr(fd, attribute, NULL, 0);
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/* Size should be less than 2MB (already huge in my opinion) */
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if (!(*size > 0 && *size < 2 * 1024 * 1024))
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goto on_error;
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ret = malloc(*size + 1);
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if (!ret) goto on_error;
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tmp = fgetxattr(fd, attribute, ret, *size);
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if (tmp != *size)
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goto on_error;
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ret[tmp] = '\0';
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return ret;
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on_error:
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free(ret);
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*size = 0;
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return NULL;
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#else
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EINA_SAFETY_ON_NULL_RETURN_VAL(size, NULL);
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*size = 0;
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return NULL;
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(void)fd;
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(void)attribute;
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#endif
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}
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EAPI Eina_Bool
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eina_xattr_set(const char *file, const char *attribute, const void *data, ssize_t length, Eina_Xattr_Flags flags)
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{
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#ifdef HAVE_XATTR
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int iflags;
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EINA_SAFETY_ON_NULL_RETURN_VAL(file, EINA_FALSE);
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EINA_SAFETY_ON_NULL_RETURN_VAL(attribute, EINA_FALSE);
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EINA_SAFETY_ON_NULL_RETURN_VAL(data, EINA_FALSE);
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EINA_SAFETY_ON_TRUE_RETURN_VAL(!(length > 0 && length < 2 * 1024 * 1024), EINA_FALSE);
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switch (flags)
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{
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case EINA_XATTR_INSERT: iflags = 0; break;
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case EINA_XATTR_REPLACE: iflags = XATTR_REPLACE; break;
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case EINA_XATTR_CREATED: iflags = XATTR_CREATE; break;
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default:
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return EINA_FALSE;
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}
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if (setxattr(file, attribute, data, length, iflags))
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return EINA_FALSE;
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return EINA_TRUE;
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#else
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return EINA_FALSE;
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(void)file;
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(void)attribute;
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(void)data;
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(void)length;
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(void)flags;
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#endif
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}
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EAPI Eina_Bool
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eina_xattr_fd_set(int fd, const char *attribute, const void *data, ssize_t length, Eina_Xattr_Flags flags)
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{
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#ifdef HAVE_XATTR
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int iflags;
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EINA_SAFETY_ON_NULL_RETURN_VAL(attribute, EINA_FALSE);
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EINA_SAFETY_ON_NULL_RETURN_VAL(data, EINA_FALSE);
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EINA_SAFETY_ON_TRUE_RETURN_VAL(!(length > 0 && length < 2 * 1024 * 1024), EINA_FALSE);
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switch (flags)
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{
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case EINA_XATTR_INSERT: iflags = 0; break;
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case EINA_XATTR_REPLACE: iflags = XATTR_REPLACE; break;
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case EINA_XATTR_CREATED: iflags = XATTR_CREATE; break;
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default:
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return EINA_FALSE;
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}
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if (fsetxattr(fd, attribute, data, length, iflags))
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return EINA_FALSE;
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return EINA_TRUE;
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#else
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return EINA_FALSE;
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(void)fd;
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(void)attribute;
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(void)data;
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(void)length;
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(void)flags;
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#endif
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}
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EAPI Eina_Bool
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eina_xattr_del(const char *file, const char *attribute)
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{
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#ifdef HAVE_XATTR
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EINA_SAFETY_ON_NULL_RETURN_VAL(file, EINA_FALSE);
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EINA_SAFETY_ON_NULL_RETURN_VAL(attribute, EINA_FALSE);
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return removexattr(file, attribute) == 0;
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#else
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return EINA_FALSE;
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(void)file;
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(void)attribute;
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#endif
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}
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EAPI Eina_Bool
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eina_xattr_fd_del(int fd, const char *attribute)
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{
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#ifdef HAVE_XATTR
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EINA_SAFETY_ON_NULL_RETURN_VAL(attribute, EINA_FALSE);
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return fremovexattr(fd, attribute) == 0;
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#else
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return EINA_FALSE;
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(void)fd;
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(void)attribute;
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#endif
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}
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EAPI Eina_Bool
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eina_xattr_string_set(const char *file, const char *attribute, const char *data, Eina_Xattr_Flags flags)
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{
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EINA_SAFETY_ON_NULL_RETURN_VAL(data, EINA_FALSE);
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return eina_xattr_set(file, attribute, data, strlen(data) + 1, flags);
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}
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EAPI char *
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eina_xattr_string_get(const char *file, const char *attribute)
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{
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char *tmp;
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ssize_t size;
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tmp = eina_xattr_get(file, attribute, &size);
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if (!tmp) return NULL;
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if (tmp[size - 1] != '\0')
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{
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free(tmp);
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return NULL;
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}
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return tmp;
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}
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EAPI Eina_Bool
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eina_xattr_double_set(const char *file, const char *attribute, double value, Eina_Xattr_Flags flags)
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{
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char buffer[128];
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eina_convert_dtoa(value, buffer);
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return eina_xattr_string_set(file, attribute, buffer, flags);
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}
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EAPI Eina_Bool
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eina_xattr_double_get(const char *file, const char *attribute, double *value)
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{
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char *tmp;
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long long int m = 0;
|
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long int e = 0;
|
|
|
|
EINA_SAFETY_ON_NULL_RETURN_VAL(value, EINA_FALSE);
|
|
|
|
tmp = eina_xattr_string_get(file, attribute);
|
|
if (!tmp) return EINA_FALSE;
|
|
|
|
if (!eina_convert_atod(tmp, strlen(tmp), &m, &e))
|
|
{
|
|
free(tmp);
|
|
return EINA_FALSE;
|
|
}
|
|
|
|
*value = ldexp((double)m, e);
|
|
free(tmp);
|
|
|
|
return EINA_TRUE;
|
|
}
|
|
|
|
EAPI Eina_Bool
|
|
eina_xattr_int_set(const char *file, const char *attribute, int value, Eina_Xattr_Flags flags)
|
|
{
|
|
char buffer[10];
|
|
|
|
eina_convert_itoa(value, buffer);
|
|
return eina_xattr_string_set(file, attribute, buffer, flags);
|
|
}
|
|
|
|
EAPI Eina_Bool
|
|
eina_xattr_int_get(const char *file, const char *attribute, int *value)
|
|
{
|
|
char *tmp;
|
|
char *eos;
|
|
Eina_Bool result;
|
|
|
|
EINA_SAFETY_ON_NULL_RETURN_VAL(value, EINA_FALSE);
|
|
|
|
tmp = eina_xattr_string_get(file, attribute);
|
|
if (!tmp) return EINA_FALSE;
|
|
|
|
*value = (int) strtol(tmp, &eos, 10);
|
|
result = (*eos == '\0');
|
|
free(tmp);
|
|
|
|
return result;
|
|
}
|
|
|
|
EAPI Eina_Bool
|
|
eina_xattr_copy(const char *src, const char *dst)
|
|
{
|
|
#ifdef HAVE_XATTR
|
|
int sfd, dfd;
|
|
Eina_Bool ret = EINA_FALSE;
|
|
|
|
EINA_SAFETY_ON_NULL_RETURN_VAL(src, EINA_FALSE);
|
|
EINA_SAFETY_ON_NULL_RETURN_VAL(dst, EINA_FALSE);
|
|
|
|
sfd = open(src, O_RDONLY);
|
|
EINA_SAFETY_ON_TRUE_GOTO(sfd < 0, s_end);
|
|
|
|
dfd = open(dst, O_RDWR);
|
|
EINA_SAFETY_ON_TRUE_GOTO(dfd < 0, d_end);
|
|
|
|
ret = eina_xattr_fd_copy(sfd, dfd);
|
|
|
|
close(dfd);
|
|
d_end:
|
|
close(sfd);
|
|
s_end:
|
|
return ret;
|
|
|
|
#else
|
|
return EINA_FALSE;
|
|
(void)src;
|
|
(void)dst;
|
|
#endif
|
|
}
|
|
|
|
EAPI Eina_Bool
|
|
eina_xattr_fd_copy(int src, int dst)
|
|
{
|
|
#ifdef HAVE_XATTR
|
|
char *buf, *attr;
|
|
ssize_t i, length;
|
|
Eina_Bool ret;
|
|
|
|
length = flistxattr(src, NULL, 0);
|
|
if (length == 0) return EINA_TRUE;
|
|
EINA_SAFETY_ON_TRUE_RETURN_VAL(length < 0, EINA_FALSE);
|
|
|
|
buf = malloc(length);
|
|
EINA_SAFETY_ON_NULL_RETURN_VAL(buf, EINA_FALSE);
|
|
|
|
attr = buf;
|
|
length = flistxattr(src, attr, length);
|
|
ret = EINA_TRUE;
|
|
for (i = 0; i < length; i += strlen(attr) + 1, attr += strlen(attr) + 1)
|
|
{
|
|
ssize_t attr_length;
|
|
void *value;
|
|
|
|
attr_length = fgetxattr(src, attr, NULL, 0);
|
|
EINA_SAFETY_ON_TRUE_GOTO(attr_length < 0, attr_error);
|
|
|
|
if (attr_length == 0)
|
|
value = NULL;
|
|
else
|
|
{
|
|
value = malloc(attr_length);
|
|
EINA_SAFETY_ON_NULL_GOTO(value, attr_error);
|
|
|
|
attr_length = fgetxattr(src, attr, value, attr_length);
|
|
}
|
|
|
|
fsetxattr(dst, attr, value, attr_length, 0);
|
|
free(value);
|
|
continue;
|
|
|
|
attr_error:
|
|
ret = EINA_FALSE;
|
|
}
|
|
|
|
free(buf);
|
|
return ret;
|
|
|
|
#else
|
|
return EINA_FALSE;
|
|
(void)src;
|
|
(void)dst;
|
|
#endif
|
|
}
|