glib/glib/gvariant.h
Alex Richardson 9f8edb1e3f GVariant: ensure GVariantIter alignment for CHERI systems
For CHERI-enabled architectures such as Arm Morello we have to align the
GVariantIter to pointer alignment (16 bytes for Morello) but defining the
opaque struct as 16 gsize elements only aligns to 8 bytes.
This does not change the layout for existing architecutre since there
gsize is the same as guintptr.

Helps: https://gitlab.gnome.org/GNOME/glib/-/issues/2842
2023-02-10 18:22:20 +00:00

542 lines
30 KiB
C

/*
* Copyright © 2007, 2008 Ryan Lortie
* Copyright © 2009, 2010 Codethink Limited
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*
* 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/>.
*
* Author: Ryan Lortie <desrt@desrt.ca>
*/
#ifndef __G_VARIANT_H__
#define __G_VARIANT_H__
#if !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION)
#error "Only <glib.h> can be included directly."
#endif
#include <glib/gvarianttype.h>
#include <glib/gstring.h>
#include <glib/gbytes.h>
G_BEGIN_DECLS
typedef struct _GVariant GVariant;
typedef enum
{
G_VARIANT_CLASS_BOOLEAN = 'b',
G_VARIANT_CLASS_BYTE = 'y',
G_VARIANT_CLASS_INT16 = 'n',
G_VARIANT_CLASS_UINT16 = 'q',
G_VARIANT_CLASS_INT32 = 'i',
G_VARIANT_CLASS_UINT32 = 'u',
G_VARIANT_CLASS_INT64 = 'x',
G_VARIANT_CLASS_UINT64 = 't',
G_VARIANT_CLASS_HANDLE = 'h',
G_VARIANT_CLASS_DOUBLE = 'd',
G_VARIANT_CLASS_STRING = 's',
G_VARIANT_CLASS_OBJECT_PATH = 'o',
G_VARIANT_CLASS_SIGNATURE = 'g',
G_VARIANT_CLASS_VARIANT = 'v',
G_VARIANT_CLASS_MAYBE = 'm',
G_VARIANT_CLASS_ARRAY = 'a',
G_VARIANT_CLASS_TUPLE = '(',
G_VARIANT_CLASS_DICT_ENTRY = '{'
} GVariantClass;
GLIB_AVAILABLE_IN_ALL
void g_variant_unref (GVariant *value);
GLIB_AVAILABLE_IN_ALL
GVariant * g_variant_ref (GVariant *value);
GLIB_AVAILABLE_IN_ALL
GVariant * g_variant_ref_sink (GVariant *value);
GLIB_AVAILABLE_IN_ALL
gboolean g_variant_is_floating (GVariant *value);
GLIB_AVAILABLE_IN_ALL
GVariant * g_variant_take_ref (GVariant *value);
GLIB_AVAILABLE_IN_ALL
const GVariantType * g_variant_get_type (GVariant *value);
GLIB_AVAILABLE_IN_ALL
const gchar * g_variant_get_type_string (GVariant *value);
GLIB_AVAILABLE_IN_ALL
gboolean g_variant_is_of_type (GVariant *value,
const GVariantType *type);
GLIB_AVAILABLE_IN_ALL
gboolean g_variant_is_container (GVariant *value);
GLIB_AVAILABLE_IN_ALL
GVariantClass g_variant_classify (GVariant *value);
GLIB_AVAILABLE_IN_ALL
GVariant * g_variant_new_boolean (gboolean value);
GLIB_AVAILABLE_IN_ALL
GVariant * g_variant_new_byte (guint8 value);
GLIB_AVAILABLE_IN_ALL
GVariant * g_variant_new_int16 (gint16 value);
GLIB_AVAILABLE_IN_ALL
GVariant * g_variant_new_uint16 (guint16 value);
GLIB_AVAILABLE_IN_ALL
GVariant * g_variant_new_int32 (gint32 value);
GLIB_AVAILABLE_IN_ALL
GVariant * g_variant_new_uint32 (guint32 value);
GLIB_AVAILABLE_IN_ALL
GVariant * g_variant_new_int64 (gint64 value);
GLIB_AVAILABLE_IN_ALL
GVariant * g_variant_new_uint64 (guint64 value);
GLIB_AVAILABLE_IN_ALL
GVariant * g_variant_new_handle (gint32 value);
GLIB_AVAILABLE_IN_ALL
GVariant * g_variant_new_double (gdouble value);
GLIB_AVAILABLE_IN_ALL
GVariant * g_variant_new_string (const gchar *string);
GLIB_AVAILABLE_IN_2_38
GVariant * g_variant_new_take_string (gchar *string);
GLIB_AVAILABLE_IN_2_38
GVariant * g_variant_new_printf (const gchar *format_string,
...) G_GNUC_PRINTF (1, 2);
GLIB_AVAILABLE_IN_ALL
GVariant * g_variant_new_object_path (const gchar *object_path);
GLIB_AVAILABLE_IN_ALL
gboolean g_variant_is_object_path (const gchar *string);
GLIB_AVAILABLE_IN_ALL
GVariant * g_variant_new_signature (const gchar *signature);
GLIB_AVAILABLE_IN_ALL
gboolean g_variant_is_signature (const gchar *string);
GLIB_AVAILABLE_IN_ALL
GVariant * g_variant_new_variant (GVariant *value);
GLIB_AVAILABLE_IN_ALL
GVariant * g_variant_new_strv (const gchar * const *strv,
gssize length);
GLIB_AVAILABLE_IN_2_30
GVariant * g_variant_new_objv (const gchar * const *strv,
gssize length);
GLIB_AVAILABLE_IN_ALL
GVariant * g_variant_new_bytestring (const gchar *string);
GLIB_AVAILABLE_IN_ALL
GVariant * g_variant_new_bytestring_array (const gchar * const *strv,
gssize length);
GLIB_AVAILABLE_IN_ALL
GVariant * g_variant_new_fixed_array (const GVariantType *element_type,
gconstpointer elements,
gsize n_elements,
gsize element_size);
GLIB_AVAILABLE_IN_ALL
gboolean g_variant_get_boolean (GVariant *value);
GLIB_AVAILABLE_IN_ALL
guint8 g_variant_get_byte (GVariant *value);
GLIB_AVAILABLE_IN_ALL
gint16 g_variant_get_int16 (GVariant *value);
GLIB_AVAILABLE_IN_ALL
guint16 g_variant_get_uint16 (GVariant *value);
GLIB_AVAILABLE_IN_ALL
gint32 g_variant_get_int32 (GVariant *value);
GLIB_AVAILABLE_IN_ALL
guint32 g_variant_get_uint32 (GVariant *value);
GLIB_AVAILABLE_IN_ALL
gint64 g_variant_get_int64 (GVariant *value);
GLIB_AVAILABLE_IN_ALL
guint64 g_variant_get_uint64 (GVariant *value);
GLIB_AVAILABLE_IN_ALL
gint32 g_variant_get_handle (GVariant *value);
GLIB_AVAILABLE_IN_ALL
gdouble g_variant_get_double (GVariant *value);
GLIB_AVAILABLE_IN_ALL
GVariant * g_variant_get_variant (GVariant *value);
GLIB_AVAILABLE_IN_ALL
const gchar * g_variant_get_string (GVariant *value,
gsize *length);
GLIB_AVAILABLE_IN_ALL
gchar * g_variant_dup_string (GVariant *value,
gsize *length);
GLIB_AVAILABLE_IN_ALL
const gchar ** g_variant_get_strv (GVariant *value,
gsize *length);
GLIB_AVAILABLE_IN_ALL
gchar ** g_variant_dup_strv (GVariant *value,
gsize *length);
GLIB_AVAILABLE_IN_2_30
const gchar ** g_variant_get_objv (GVariant *value,
gsize *length);
GLIB_AVAILABLE_IN_ALL
gchar ** g_variant_dup_objv (GVariant *value,
gsize *length);
GLIB_AVAILABLE_IN_ALL
const gchar * g_variant_get_bytestring (GVariant *value);
GLIB_AVAILABLE_IN_ALL
gchar * g_variant_dup_bytestring (GVariant *value,
gsize *length);
GLIB_AVAILABLE_IN_ALL
const gchar ** g_variant_get_bytestring_array (GVariant *value,
gsize *length);
GLIB_AVAILABLE_IN_ALL
gchar ** g_variant_dup_bytestring_array (GVariant *value,
gsize *length);
GLIB_AVAILABLE_IN_ALL
GVariant * g_variant_new_maybe (const GVariantType *child_type,
GVariant *child);
GLIB_AVAILABLE_IN_ALL
GVariant * g_variant_new_array (const GVariantType *child_type,
GVariant * const *children,
gsize n_children);
GLIB_AVAILABLE_IN_ALL
GVariant * g_variant_new_tuple (GVariant * const *children,
gsize n_children);
GLIB_AVAILABLE_IN_ALL
GVariant * g_variant_new_dict_entry (GVariant *key,
GVariant *value);
GLIB_AVAILABLE_IN_ALL
GVariant * g_variant_get_maybe (GVariant *value);
GLIB_AVAILABLE_IN_ALL
gsize g_variant_n_children (GVariant *value);
GLIB_AVAILABLE_IN_ALL
void g_variant_get_child (GVariant *value,
gsize index_,
const gchar *format_string,
...);
GLIB_AVAILABLE_IN_ALL
GVariant * g_variant_get_child_value (GVariant *value,
gsize index_);
GLIB_AVAILABLE_IN_ALL
gboolean g_variant_lookup (GVariant *dictionary,
const gchar *key,
const gchar *format_string,
...);
GLIB_AVAILABLE_IN_ALL
GVariant * g_variant_lookup_value (GVariant *dictionary,
const gchar *key,
const GVariantType *expected_type);
GLIB_AVAILABLE_IN_ALL
gconstpointer g_variant_get_fixed_array (GVariant *value,
gsize *n_elements,
gsize element_size);
GLIB_AVAILABLE_IN_ALL
gsize g_variant_get_size (GVariant *value);
GLIB_AVAILABLE_IN_ALL
gconstpointer g_variant_get_data (GVariant *value);
GLIB_AVAILABLE_IN_2_36
GBytes * g_variant_get_data_as_bytes (GVariant *value);
GLIB_AVAILABLE_IN_ALL
void g_variant_store (GVariant *value,
gpointer data);
GLIB_AVAILABLE_IN_ALL
gchar * g_variant_print (GVariant *value,
gboolean type_annotate);
GLIB_AVAILABLE_IN_ALL
GString * g_variant_print_string (GVariant *value,
GString *string,
gboolean type_annotate);
GLIB_AVAILABLE_IN_ALL
guint g_variant_hash (gconstpointer value);
GLIB_AVAILABLE_IN_ALL
gboolean g_variant_equal (gconstpointer one,
gconstpointer two);
GLIB_AVAILABLE_IN_ALL
GVariant * g_variant_get_normal_form (GVariant *value);
GLIB_AVAILABLE_IN_ALL
gboolean g_variant_is_normal_form (GVariant *value);
GLIB_AVAILABLE_IN_ALL
GVariant * g_variant_byteswap (GVariant *value);
GLIB_AVAILABLE_IN_2_36
GVariant * g_variant_new_from_bytes (const GVariantType *type,
GBytes *bytes,
gboolean trusted);
GLIB_AVAILABLE_IN_ALL
GVariant * g_variant_new_from_data (const GVariantType *type,
gconstpointer data,
gsize size,
gboolean trusted,
GDestroyNotify notify,
gpointer user_data);
typedef struct _GVariantIter GVariantIter;
struct _GVariantIter {
/*< private >*/
guintptr x[16];
};
GLIB_AVAILABLE_IN_ALL
GVariantIter * g_variant_iter_new (GVariant *value);
GLIB_AVAILABLE_IN_ALL
gsize g_variant_iter_init (GVariantIter *iter,
GVariant *value);
GLIB_AVAILABLE_IN_ALL
GVariantIter * g_variant_iter_copy (GVariantIter *iter);
GLIB_AVAILABLE_IN_ALL
gsize g_variant_iter_n_children (GVariantIter *iter);
GLIB_AVAILABLE_IN_ALL
void g_variant_iter_free (GVariantIter *iter);
GLIB_AVAILABLE_IN_ALL
GVariant * g_variant_iter_next_value (GVariantIter *iter);
GLIB_AVAILABLE_IN_ALL
gboolean g_variant_iter_next (GVariantIter *iter,
const gchar *format_string,
...);
GLIB_AVAILABLE_IN_ALL
gboolean g_variant_iter_loop (GVariantIter *iter,
const gchar *format_string,
...);
typedef struct _GVariantBuilder GVariantBuilder;
struct _GVariantBuilder {
/*< private >*/
union
{
struct {
gsize partial_magic;
const GVariantType *type;
guintptr y[14];
} s;
guintptr x[16];
} u;
};
typedef enum
{
G_VARIANT_PARSE_ERROR_FAILED,
G_VARIANT_PARSE_ERROR_BASIC_TYPE_EXPECTED,
G_VARIANT_PARSE_ERROR_CANNOT_INFER_TYPE,
G_VARIANT_PARSE_ERROR_DEFINITE_TYPE_EXPECTED,
G_VARIANT_PARSE_ERROR_INPUT_NOT_AT_END,
G_VARIANT_PARSE_ERROR_INVALID_CHARACTER,
G_VARIANT_PARSE_ERROR_INVALID_FORMAT_STRING,
G_VARIANT_PARSE_ERROR_INVALID_OBJECT_PATH,
G_VARIANT_PARSE_ERROR_INVALID_SIGNATURE,
G_VARIANT_PARSE_ERROR_INVALID_TYPE_STRING,
G_VARIANT_PARSE_ERROR_NO_COMMON_TYPE,
G_VARIANT_PARSE_ERROR_NUMBER_OUT_OF_RANGE,
G_VARIANT_PARSE_ERROR_NUMBER_TOO_BIG,
G_VARIANT_PARSE_ERROR_TYPE_ERROR,
G_VARIANT_PARSE_ERROR_UNEXPECTED_TOKEN,
G_VARIANT_PARSE_ERROR_UNKNOWN_KEYWORD,
G_VARIANT_PARSE_ERROR_UNTERMINATED_STRING_CONSTANT,
G_VARIANT_PARSE_ERROR_VALUE_EXPECTED,
G_VARIANT_PARSE_ERROR_RECURSION
} GVariantParseError;
#define G_VARIANT_PARSE_ERROR (g_variant_parse_error_quark ())
GLIB_DEPRECATED_IN_2_38_FOR(g_variant_parse_error_quark)
GQuark g_variant_parser_get_error_quark (void);
GLIB_AVAILABLE_IN_ALL
GQuark g_variant_parse_error_quark (void);
/**
* G_VARIANT_BUILDER_INIT:
* @variant_type: a const GVariantType*
*
* A stack-allocated #GVariantBuilder must be initialized if it is
* used together with g_auto() to avoid warnings or crashes if
* function returns before g_variant_builder_init() is called on the
* builder.
*
* This macro can be used as initializer instead of an
* explicit zeroing a variable when declaring it and a following
* g_variant_builder_init(), but it cannot be assigned to a variable.
*
* The passed @variant_type should be a static GVariantType to avoid
* lifetime issues, as copying the @variant_type does not happen in
* the G_VARIANT_BUILDER_INIT() call, but rather in functions that
* make sure that #GVariantBuilder is valid.
*
* |[<!-- language="C" -->
* g_auto(GVariantBuilder) builder = G_VARIANT_BUILDER_INIT (G_VARIANT_TYPE_BYTESTRING);
* ]|
*
* Since: 2.50
*/
#define G_VARIANT_BUILDER_INIT(variant_type) \
{ \
{ \
{ \
2942751021u /* == GVSB_MAGIC_PARTIAL, see gvariant.c */, variant_type, { 0, } \
} \
} \
}
GLIB_AVAILABLE_IN_ALL
GVariantBuilder * g_variant_builder_new (const GVariantType *type);
GLIB_AVAILABLE_IN_ALL
void g_variant_builder_unref (GVariantBuilder *builder);
GLIB_AVAILABLE_IN_ALL
GVariantBuilder * g_variant_builder_ref (GVariantBuilder *builder);
GLIB_AVAILABLE_IN_ALL
void g_variant_builder_init (GVariantBuilder *builder,
const GVariantType *type);
GLIB_AVAILABLE_IN_ALL
GVariant * g_variant_builder_end (GVariantBuilder *builder);
GLIB_AVAILABLE_IN_ALL
void g_variant_builder_clear (GVariantBuilder *builder);
GLIB_AVAILABLE_IN_ALL
void g_variant_builder_open (GVariantBuilder *builder,
const GVariantType *type);
GLIB_AVAILABLE_IN_ALL
void g_variant_builder_close (GVariantBuilder *builder);
GLIB_AVAILABLE_IN_ALL
void g_variant_builder_add_value (GVariantBuilder *builder,
GVariant *value);
GLIB_AVAILABLE_IN_ALL
void g_variant_builder_add (GVariantBuilder *builder,
const gchar *format_string,
...);
GLIB_AVAILABLE_IN_ALL
void g_variant_builder_add_parsed (GVariantBuilder *builder,
const gchar *format,
...);
GLIB_AVAILABLE_IN_ALL
GVariant * g_variant_new (const gchar *format_string,
...);
GLIB_AVAILABLE_IN_ALL
void g_variant_get (GVariant *value,
const gchar *format_string,
...);
GLIB_AVAILABLE_IN_ALL
GVariant * g_variant_new_va (const gchar *format_string,
const gchar **endptr,
va_list *app);
GLIB_AVAILABLE_IN_ALL
void g_variant_get_va (GVariant *value,
const gchar *format_string,
const gchar **endptr,
va_list *app);
GLIB_AVAILABLE_IN_2_34
gboolean g_variant_check_format_string (GVariant *value,
const gchar *format_string,
gboolean copy_only);
GLIB_AVAILABLE_IN_ALL
GVariant * g_variant_parse (const GVariantType *type,
const gchar *text,
const gchar *limit,
const gchar **endptr,
GError **error);
GLIB_AVAILABLE_IN_ALL
GVariant * g_variant_new_parsed (const gchar *format,
...);
GLIB_AVAILABLE_IN_ALL
GVariant * g_variant_new_parsed_va (const gchar *format,
va_list *app);
GLIB_AVAILABLE_IN_2_40
gchar * g_variant_parse_error_print_context (GError *error,
const gchar *source_str);
GLIB_AVAILABLE_IN_ALL
gint g_variant_compare (gconstpointer one,
gconstpointer two);
typedef struct _GVariantDict GVariantDict;
struct _GVariantDict {
/*< private >*/
union
{
struct {
GVariant *asv;
gsize partial_magic;
guintptr y[14];
} s;
guintptr x[16];
} u;
};
/**
* G_VARIANT_DICT_INIT:
* @asv: (nullable): a GVariant*
*
* A stack-allocated #GVariantDict must be initialized if it is used
* together with g_auto() to avoid warnings or crashes if function
* returns before g_variant_dict_init() is called on the builder.
*
* This macro can be used as initializer instead of an explicit
* zeroing a variable when declaring it and a following
* g_variant_dict_init(), but it cannot be assigned to a variable.
*
* The passed @asv has to live long enough for #GVariantDict to gather
* the entries from, as the gathering does not happen in the
* G_VARIANT_DICT_INIT() call, but rather in functions that make sure
* that #GVariantDict is valid. In context where the initialization
* value has to be a constant expression, the only possible value of
* @asv is %NULL. It is still possible to call g_variant_dict_init()
* safely with a different @asv right after the variable was
* initialized with G_VARIANT_DICT_INIT().
*
* |[<!-- language="C" -->
* g_autoptr(GVariant) variant = get_asv_variant ();
* g_auto(GVariantDict) dict = G_VARIANT_DICT_INIT (variant);
* ]|
*
* Since: 2.50
*/
#define G_VARIANT_DICT_INIT(asv) \
{ \
{ \
{ \
asv, 3488698669u /* == GVSD_MAGIC_PARTIAL, see gvariant.c */, { 0, } \
} \
} \
}
GLIB_AVAILABLE_IN_2_40
GVariantDict * g_variant_dict_new (GVariant *from_asv);
GLIB_AVAILABLE_IN_2_40
void g_variant_dict_init (GVariantDict *dict,
GVariant *from_asv);
GLIB_AVAILABLE_IN_2_40
gboolean g_variant_dict_lookup (GVariantDict *dict,
const gchar *key,
const gchar *format_string,
...);
GLIB_AVAILABLE_IN_2_40
GVariant * g_variant_dict_lookup_value (GVariantDict *dict,
const gchar *key,
const GVariantType *expected_type);
GLIB_AVAILABLE_IN_2_40
gboolean g_variant_dict_contains (GVariantDict *dict,
const gchar *key);
GLIB_AVAILABLE_IN_2_40
void g_variant_dict_insert (GVariantDict *dict,
const gchar *key,
const gchar *format_string,
...);
GLIB_AVAILABLE_IN_2_40
void g_variant_dict_insert_value (GVariantDict *dict,
const gchar *key,
GVariant *value);
GLIB_AVAILABLE_IN_2_40
gboolean g_variant_dict_remove (GVariantDict *dict,
const gchar *key);
GLIB_AVAILABLE_IN_2_40
void g_variant_dict_clear (GVariantDict *dict);
GLIB_AVAILABLE_IN_2_40
GVariant * g_variant_dict_end (GVariantDict *dict);
GLIB_AVAILABLE_IN_2_40
GVariantDict * g_variant_dict_ref (GVariantDict *dict);
GLIB_AVAILABLE_IN_2_40
void g_variant_dict_unref (GVariantDict *dict);
G_END_DECLS
#endif /* __G_VARIANT_H__ */