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eina: add eina_xattr.{c,h}. 

SVN revision: 63412
This commit is contained in:
Cedric BAIL 2011-09-15 15:37:28 +00:00
parent 286252b18a
commit 0c6ed213ad
8 changed files with 430 additions and 181 deletions
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6
legacy/eina/ChangeLog
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@ -136,3 +136,9 @@
* Strbuf + Ustrbuf: Added eina_(u)strbuf_manage_new. This lets us
take a string and use it as the string buffer instead of copying
and allocating.
2011-09-15 Cedric Bail
* Add eina_xattr_ls, eina_xattr_get, eina_xattr_set, eina_xattr_string_set,
eina_xattr_string_get, eina_xattr_double_set, eina_xattr_double_get,
eina_xattr_int_set, eina_xattr_int_get.

1
legacy/eina/src/include/Eina.h
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@ -185,6 +185,7 @@ extern "C" {
#include "eina_prefix.h"
#include "eina_refcount.h"
#include "eina_mmap.h"
#include "eina_xattr.h"
#ifdef __cplusplus
}

3
legacy/eina/src/include/Makefile.am
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@ -58,7 +58,8 @@ eina_simple_xml_parser.h \
eina_lock.h \
eina_prefix.h \
eina_refcount.h \
eina_mmap.h
eina_mmap.h \
eina_xattr.h
# Will be back for developper after 1.1.
# eina_object.h

48
legacy/eina/src/include/eina_file.h
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@ -1,5 +1,6 @@
/* EINA - EFL data type library
* Copyright (C) 2007-2008 Jorge Luis Zapata Muga
* 2011 Cedric Bail
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
@ -112,12 +113,6 @@ typedef enum {
EINA_FILE_WHT /**< Whiteout file type (unused on Windows). */
} Eina_File_Type;
typedef enum {
EINA_XATTR_INSERT, /**< This is the default behaviour, it will either create or replace the extended attribute */
EINA_XATTR_REPLACE, /**< This will only succeed if the extended attribute previously existed */
EINA_XATTR_CREATED /**< This will only succeed if the extended attribute wasn't previously set */
} Eina_Xattr_Flags;
typedef struct _Eina_File Eina_File;
typedef enum {
@ -279,47 +274,6 @@ EAPI Eina_Iterator *eina_file_stat_ls(const char *dir) EINA_WARN_UNUSED_RESULT E
*/
EAPI Eina_Iterator *eina_file_direct_ls(const char *dir) EINA_WARN_UNUSED_RESULT EINA_ARG_NONNULL(1) EINA_MALLOC;
/**
* @brief Get an iterator that list all extended attribute of a file.
*
* @param file The filename to retrieve the extended attribute list from.
* @return an iterator.
*
* The iterator will not allocate any data during the iteration step, so you need to copy them yourself
* if you need.
*
* @since 1.1
*/
EAPI Eina_Iterator *eina_xattr_ls(const char *file);
/**
* @brief Retrieve an extended attribute from a file.
*
* @param file The file to retrieve the extended attribute from.
* @param atttribute The extended attribute name to retrieve.
* @param size The size of the retrieved extended attribute.
* @return the allocated data that hold the extended attribute value.
*
* It will return NULL and *size will be @c 0 if it fails.
*
* @since 1.1
*/
EAPI void *eina_xattr_get(const char *file, const char *attribute, ssize_t *size);
/**
* @brief Set an extended attribute on a file.
*
* @param file The file to set the extended attribute to.
* @param attribute The attribute to set.
* @param data The data to set.
* @param length The length of the data to set.
* @param flags Define the set policy
* @return EINA_TRUE on success, EINA_FALSE otherwise.
*
* @since 1.1
*/
EAPI Eina_Bool eina_xattr_set(const char *file, const char *attribute, const void *data, ssize_t length, Eina_Xattr_Flags flags);
/**
* @brief Get a read-only handler to a file.
*

166
legacy/eina/src/include/eina_xattr.h Normal file
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@ -0,0 +1,166 @@
/* EINA - EFL data type library
* Copyright (C) 2011 Cedric Bail
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library;
* if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef EINA_XATTR_H_
#define EINA_XATTR_H_
#include "eina_types.h"
/**
* @addtogroup Eina_Tools_Group Tools
*
* @{
*/
/**
* @typedef Eina_Xattr_Flags
* define extended attribute creation
*/
typedef enum {
EINA_XATTR_INSERT, /**< This is the default behaviour, it will either create or replace the extended attribute */
EINA_XATTR_REPLACE, /**< This will only succeed if the extended attribute previously existed */
EINA_XATTR_CREATED /**< This will only succeed if the extended attribute wasn't previously set */
} Eina_Xattr_Flags;
/**
* @brief Get an iterator that list all extended attribute of a file.
*
* @param file The filename to retrieve the extended attribute list from.
* @return an iterator.
*
* The iterator will not allocate any data during the iteration step, so you need to copy them yourself
* if you need.
*
* @since 1.1
*/
EAPI Eina_Iterator *eina_xattr_ls(const char *file);
/**
* @brief Retrieve an extended attribute from a file.
*
* @param file The file to retrieve the extended attribute from.
* @param atttribute The extended attribute name to retrieve.
* @param size The size of the retrieved extended attribute.
* @return the allocated data that hold the extended attribute value.
*
* It will return NULL and *size will be @c 0 if it fails.
*
* @since 1.1
*/
EAPI void *eina_xattr_get(const char *file, const char *attribute, ssize_t *size);
/**
* @brief Set an extended attribute on a file.
*
* @param file The file to set the extended attribute to.
* @param attribute The attribute to set.
* @param data The data to set.
* @param length The length of the data to set.
* @param flags Define the set policy.
* @return EINA_TRUE on success, EINA_FALSE otherwise.
*
* @since 1.1
*/
EAPI Eina_Bool eina_xattr_set(const char *file, const char *attribute, const void *data, ssize_t length, Eina_Xattr_Flags flags);
/**
* @brief Set a string as a extended attribute properties.
*
* @param file The file to set the string to.
* @param attribute The attribute to set.
* @param data The NULL terminated string to set.
* @param flags Define the set policy.
* @return EINA_TRUE on success, EINA_FALSE otherwise.
*
* @since 1.1
*/
EAPI Eina_Bool eina_xattr_string_set(const char *file, const char *attribute, const char *data, Eina_Xattr_Flags flags);
/**
* @brief Get a string from an extended attribute properties.
*
* @param file The file to get the string from.
* @param attribute The attribute to get.
* @return a valid string on success, NULL otherwise.
*
* This call check that the string is properly NULL-terminated before returning it.
*
* @since 1.1
*/
EAPI char *eina_xattr_string_get(const char *file, const char *attribute);
/**
* @brief Set a double as a extended attribute properties.
*
* @param file The file to set the double to.
* @param attribute The attribute to set.
* @param data The NULL terminated double to set.
* @param flags Define the set policy.
* @return EINA_TRUE on success, EINA_FALSE otherwise.
*
* @since 1.1
*/
EAPI Eina_Bool eina_xattr_double_set(const char *file, const char *attribute, double value, Eina_Xattr_Flags flags);
/**
* @brief Get a double from an extended attribute properties.
*
* @param file The file to get the string from.
* @param attribute The attribute to get.
* @param value Where to put the extracted value
* @return EINA_TRUE on success, EINA_FALSE otherwise.
*
* This call check that the double is correctly set.
*
* @since 1.1
*/
EAPI Eina_Bool eina_xattr_double_get(const char *file, const char *attribute, double *value);
/**
* @brief Set an int as a extended attribute properties.
*
* @param file The file to set the int to.
* @param attribute The attribute to set.
* @param data The NULL terminated int to set.
* @param flags Define the set policy.
* @return EINA_TRUE on success, EINA_FALSE otherwise.
*
* @since 1.1
*/
EAPI Eina_Bool eina_xattr_int_set(const char *file, const char *attribute, int value, Eina_Xattr_Flags flags);
/**
* @brief Get a int from an extended attribute properties.
*
* @param file The file to get the string from.
* @param attribute The attribute to get.
* @param value Where to put the extracted value
* @return EINA_TRUE on success, EINA_FALSE otherwise.
*
* This call check that the int is correctly set.
*
* @since 1.1
*/
EAPI Eina_Bool eina_xattr_int_get(const char *file, const char *attribute, int *value);
/**
* @}
*/
#endif

3
legacy/eina/src/lib/Makefile.am
View File

@ -49,7 +49,8 @@ eina_tiler.c \
eina_unicode.c \
eina_ustrbuf.c \
eina_ustringshare.c \
eina_value.c
eina_value.c \
eina_xattr.c
# Will be back for developper after 1.1
# eina_object.c

133
legacy/eina/src/lib/eina_file.c
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@ -1,6 +1,6 @@
/* EINA - EFL data type library
* Copyright (C) 2007-2008 Jorge Luis Zapata Muga, Vincent Torri
* Copyright (C) 2010 Cedric Bail
* Copyright (C) 2010-2011 Cedric Bail
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
@ -47,10 +47,6 @@ void *alloca (size_t);
#include <sys/mman.h>
#include <fcntl.h>
#ifdef HAVE_XATTR
# include <sys/xattr.h>
#endif
#define PATH_DELIM '/'
#ifdef __sun
@ -103,7 +99,6 @@ void *alloca (size_t);
typedef struct _Eina_File_Iterator Eina_File_Iterator;
typedef struct _Eina_File_Map Eina_File_Map;
typedef struct _Eina_Xattr_Iterator Eina_Xattr_Iterator;
struct _Eina_File_Iterator
{
@ -115,16 +110,6 @@ struct _Eina_File_Iterator
char dir[1];
};
struct _Eina_Xattr_Iterator
{
Eina_Iterator iterator;
ssize_t length;
ssize_t offset;
char xattr[1];
};
struct _Eina_File
{
const char *filename;
@ -394,33 +379,6 @@ _eina_file_stat_ls_iterator_next(Eina_File_Direct_Iterator *it, void **data)
return EINA_TRUE;
}
#ifdef HAVE_XATTR
static Eina_Bool
_eina_xattr_ls_iterator_next(Eina_Xattr_Iterator *it, void **data)
{
if (it->offset >= it->length)
return EINA_FALSE;
*data = it->xattr + it->offset;
it->offset += strlen(it->xattr + it->offset) + 1;
return EINA_TRUE;
}
static void *
_eina_xattr_ls_iterator_container(Eina_Xattr_Iterator *it __UNUSED__)
{
return NULL;
}
static void
_eina_xattr_ls_iterator_free(Eina_Xattr_Iterator *it)
{
EINA_MAGIC_SET(&it->iterator, 0);
free(it);
}
#endif
static void
_eina_file_real_close(Eina_File *file)
{
@ -775,95 +733,6 @@ eina_file_stat_ls(const char *dir)
return &it->iterator;
}
EAPI Eina_Iterator *
eina_xattr_ls(const char *file)
{
Eina_Xattr_Iterator *it;
ssize_t length;
EINA_SAFETY_ON_NULL_RETURN_VAL(file, NULL);
#ifdef HAVE_XATTR
length = listxattr(file, NULL, 0);
if (length <= 0) return NULL;
it = calloc(1, sizeof (Eina_Xattr_Iterator) + length - 1);
if (!it) return NULL;
EINA_MAGIC_SET(&it->iterator, EINA_MAGIC_ITERATOR);
it->length = listxattr(file, it->xattr, length);
if (it->length != length)
{
free(it);
return NULL;
}
it->iterator.version = EINA_ITERATOR_VERSION;
it->iterator.next = FUNC_ITERATOR_NEXT(_eina_xattr_ls_iterator_next);
it->iterator.get_container = FUNC_ITERATOR_GET_CONTAINER(_eina_xattr_ls_iterator_container);
it->iterator.free = FUNC_ITERATOR_FREE(_eina_xattr_ls_iterator_free);
return &it->iterator;
#else
return NULL;
#endif
}
EAPI void *
eina_xattr_get(const char *file, const char *attribute, ssize_t *size)
{
void *ret = NULL;
ssize_t tmp;
EINA_SAFETY_ON_NULL_RETURN_VAL(file, NULL);
EINA_SAFETY_ON_NULL_RETURN_VAL(attribute, NULL);
EINA_SAFETY_ON_TRUE_RETURN_VAL(!size, NULL);
*size = getxattr(file, attribute, NULL, 0);
/* Size should be less than 2MB (already huge in my opinion) */
if (!(*size > 0 && *size < 2 * 1024 * 1024))
goto on_error;
ret = malloc(*size);
if (!ret) return NULL;
tmp = getxattr(file, attribute, ret, *size);
if (tmp != *size)
goto on_error;
return ret;
on_error:
free(ret);
*size = 0;
return NULL;
}
EAPI Eina_Bool
eina_xattr_set(const char *file, const char *attribute, const void *data, ssize_t length, Eina_Xattr_Flags flags)
{
int iflags;
EINA_SAFETY_ON_NULL_RETURN_VAL(file, EINA_FALSE);
EINA_SAFETY_ON_NULL_RETURN_VAL(attribute, EINA_FALSE);
EINA_SAFETY_ON_NULL_RETURN_VAL(data, EINA_FALSE);
EINA_SAFETY_ON_TRUE_RETURN_VAL(!(length > 0 && length < 2 * 1024 * 1024), EINA_FALSE);
switch (flags)
{
case EINA_XATTR_INSERT: iflags = 0; break;
case EINA_XATTR_REPLACE: iflags = XATTR_REPLACE; break;
case EINA_XATTR_CREATED: iflags = XATTR_CREATE; break;
default:
return EINA_FALSE;
}
if (setxattr(file, attribute, data, length, iflags))
return EINA_FALSE;
return EINA_TRUE;
}
EAPI Eina_File *
eina_file_open(const char *filename, Eina_Bool shared)
{

251
legacy/eina/src/lib/eina_xattr.c Normal file
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@ -0,0 +1,251 @@
/* EINA - EFL data type library
* Copyright (C) 2011 Cedric Bail
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library;
* if not, see <http://www.gnu.org/licenses/>.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <sys/types.h>
#include <string.h>
#include <math.h>
#ifdef HAVE_XATTR
# include <sys/xattr.h>
#endif
#include "eina_config.h"
#include "eina_private.h"
#include "eina_safety_checks.h"
#include "eina_xattr.h"
#include "eina_convert.h"
typedef struct _Eina_Xattr_Iterator Eina_Xattr_Iterator;
struct _Eina_Xattr_Iterator
{
Eina_Iterator iterator;
ssize_t length;
ssize_t offset;
char xattr[1];
};
#ifdef HAVE_XATTR
static Eina_Bool
_eina_xattr_ls_iterator_next(Eina_Xattr_Iterator *it, void **data)
{
if (it->offset >= it->length)
return EINA_FALSE;
*data = it->xattr + it->offset;
it->offset += strlen(it->xattr + it->offset) + 1;
return EINA_TRUE;
}
static void *
_eina_xattr_ls_iterator_container(Eina_Xattr_Iterator *it __UNUSED__)
{
return NULL;
}
static void
_eina_xattr_ls_iterator_free(Eina_Xattr_Iterator *it)
{
EINA_MAGIC_SET(&it->iterator, 0);
free(it);
}
#endif
EAPI Eina_Iterator *
eina_xattr_ls(const char *file)
{
Eina_Xattr_Iterator *it;
ssize_t length;
EINA_SAFETY_ON_NULL_RETURN_VAL(file, NULL);
#ifdef HAVE_XATTR
length = listxattr(file, NULL, 0);
if (length <= 0) return NULL;
it = calloc(1, sizeof (Eina_Xattr_Iterator) + length - 1);
if (!it) return NULL;
EINA_MAGIC_SET(&it->iterator, EINA_MAGIC_ITERATOR);
it->length = listxattr(file, it->xattr, length);
if (it->length != length)
{
free(it);
return NULL;
}
it->iterator.version = EINA_ITERATOR_VERSION;
it->iterator.next = FUNC_ITERATOR_NEXT(_eina_xattr_ls_iterator_next);
it->iterator.get_container = FUNC_ITERATOR_GET_CONTAINER(_eina_xattr_ls_iterator_container);
it->iterator.free = FUNC_ITERATOR_FREE(_eina_xattr_ls_iterator_free);
return &it->iterator;
#else
return NULL;
#endif
}
EAPI void *
eina_xattr_get(const char *file, const char *attribute, ssize_t *size)
{
void *ret = NULL;
ssize_t tmp;
EINA_SAFETY_ON_NULL_RETURN_VAL(file, NULL);
EINA_SAFETY_ON_NULL_RETURN_VAL(attribute, NULL);
EINA_SAFETY_ON_TRUE_RETURN_VAL(!size, NULL);
*size = getxattr(file, attribute, NULL, 0);
/* Size should be less than 2MB (already huge in my opinion) */
if (!(*size > 0 && *size < 2 * 1024 * 1024))
goto on_error;
ret = malloc(*size);
if (!ret) return NULL;
tmp = getxattr(file, attribute, ret, *size);
if (tmp != *size)
goto on_error;
return ret;
on_error:
free(ret);
*size = 0;
return NULL;
}
EAPI Eina_Bool
eina_xattr_set(const char *file, const char *attribute, const void *data, ssize_t length, Eina_Xattr_Flags flags)
{
int iflags;
EINA_SAFETY_ON_NULL_RETURN_VAL(file, EINA_FALSE);
EINA_SAFETY_ON_NULL_RETURN_VAL(attribute, EINA_FALSE);
EINA_SAFETY_ON_NULL_RETURN_VAL(data, EINA_FALSE);
EINA_SAFETY_ON_TRUE_RETURN_VAL(!(length > 0 && length < 2 * 1024 * 1024), EINA_FALSE);
switch (flags)
{
case EINA_XATTR_INSERT: iflags = 0; break;
case EINA_XATTR_REPLACE: iflags = XATTR_REPLACE; break;
case EINA_XATTR_CREATED: iflags = XATTR_CREATE; break;
default:
return EINA_FALSE;
}
if (setxattr(file, attribute, data, length, iflags))
return EINA_FALSE;
return EINA_TRUE;
}
EAPI Eina_Bool
eina_xattr_string_set(const char *file, const char *attribute, const char *data, Eina_Xattr_Flags flags)
{
EINA_SAFETY_ON_NULL_RETURN_VAL(data, EINA_FALSE);
return eina_xattr_set(file, attribute, data, strlen(data) + 1, flags);
}
EAPI char *
eina_xattr_string_get(const char *file, const char *attribute)
{
char *tmp;
ssize_t size;
tmp = eina_xattr_get(file, attribute, &size);
if (!tmp) return NULL;
if (tmp[size - 1] != '\0')
{
free(tmp);
return NULL;
}
return tmp;
}
EAPI Eina_Bool
eina_xattr_double_set(const char *file, const char *attribute, double value, Eina_Xattr_Flags flags)
{
char buffer[128];
eina_convert_dtoa(value, buffer);
return eina_xattr_string_set(file, attribute, buffer, flags);
}
EAPI Eina_Bool
eina_xattr_double_get(const char *file, const char *attribute, double *value)
{
char *tmp;
long long int m = 0;
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;
}