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NetworkManager/shared/nm-utils/nm-shared-utils.h
Thomas Haller 99380fbcea shared: add nm_errno() and nm_utils_error_set_errno() helper 
(cherry picked from commit 4186ddb58b)
2018-09-12 10:40:07 +02:00

852 lines
29 KiB
C
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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
/* NetworkManager -- Network link manager
*
* 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 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, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA.
*
* (C) Copyright 2016 Red Hat, Inc.
*/
#ifndef __NM_SHARED_UTILS_H__
#define __NM_SHARED_UTILS_H__
#include <netinet/in.h>
/*****************************************************************************/
static inline gboolean
_NM_INT_NOT_NEGATIVE (gssize val)
{
/* whether an enum (without negative values) is a signed int, depends on compiler options
* and compiler implementation.
*
* When using such an enum for accessing an array, one naturally wants to check
* that the enum is not negative. However, the compiler doesn't like a plain
* comparisong "enum_val >= 0", because (if the enum is unsigned), it will warn
* that the expression is always true *duh*. Not even a cast to a signed
* type helps to avoid the compiler warning in any case.
*
* The sole purpose of this function is to avoid a compiler warning, when checking
* that an enum is not negative. */
return val >= 0;
}
/*****************************************************************************/
static inline char
nm_utils_addr_family_to_char (int addr_family)
{
switch (addr_family) {
case AF_INET: return '4';
case AF_INET6: return '6';
}
g_return_val_if_reached ('?');
}
static inline gsize
nm_utils_addr_family_to_size (int addr_family)
{
switch (addr_family) {
case AF_INET: return sizeof (in_addr_t);
case AF_INET6: return sizeof (struct in6_addr);
}
g_return_val_if_reached (0);
}
#define nm_assert_addr_family(addr_family) \
nm_assert (NM_IN_SET ((addr_family), AF_INET, AF_INET6))
/*****************************************************************************/
typedef struct {
union {
guint8 addr_ptr[1];
in_addr_t addr4;
struct in6_addr addr6;
/* NMIPAddr is really a union for IP addresses.
* However, as ethernet addresses fit in here nicely, use
* it also for an ethernet MAC address. */
guint8 addr_eth[6 /*ETH_ALEN*/];
};
} NMIPAddr;
extern const NMIPAddr nm_ip_addr_zero;
static inline void
nm_ip_addr_set (int addr_family, gpointer dst, const NMIPAddr *src)
{
nm_assert_addr_family (addr_family);
nm_assert (dst);
nm_assert (src);
if (addr_family != AF_INET6)
*((in_addr_t *) dst) = src->addr4;
else
*((struct in6_addr *) dst) = src->addr6;
}
/*****************************************************************************/
#define NM_CMP_RETURN(c) \
G_STMT_START { \
const int _cc = (c); \
if (_cc) \
return _cc < 0 ? -1 : 1; \
} G_STMT_END
#define NM_CMP_SELF(a, b) \
G_STMT_START { \
typeof (a) _a = (a); \
typeof (b) _b = (b); \
\
if (_a == _b) \
return 0; \
if (!_a) \
return -1; \
if (!_b) \
return 1; \
} G_STMT_END
#define NM_CMP_DIRECT(a, b) \
G_STMT_START { \
typeof (a) _a = (a); \
typeof (b) _b = (b); \
\
if (_a != _b) \
return (_a < _b) ? -1 : 1; \
} G_STMT_END
#define NM_CMP_DIRECT_MEMCMP(a, b, size) \
NM_CMP_RETURN (memcmp ((a), (b), (size)))
#define NM_CMP_DIRECT_STRCMP0(a, b) \
NM_CMP_RETURN (g_strcmp0 ((a), (b)))
#define NM_CMP_DIRECT_IN6ADDR(a, b) \
G_STMT_START { \
const struct in6_addr *const _a = (a); \
const struct in6_addr *const _b = (b); \
NM_CMP_RETURN (memcmp (_a, _b, sizeof (struct in6_addr))); \
} G_STMT_END
#define NM_CMP_FIELD(a, b, field) \
NM_CMP_DIRECT (((a)->field), ((b)->field))
#define NM_CMP_FIELD_UNSAFE(a, b, field) \
G_STMT_START { \
/* it's unsafe, because it evaluates the arguments more then once.
* This is necessary for bitfields, for which typeof() doesn't work. */ \
if (((a)->field) != ((b)->field)) \
return ((a)->field < ((b)->field)) ? -1 : 1; \
} G_STMT_END
#define NM_CMP_FIELD_BOOL(a, b, field) \
NM_CMP_DIRECT (!!((a)->field), !!((b)->field))
#define NM_CMP_FIELD_STR(a, b, field) \
NM_CMP_RETURN (strcmp (((a)->field), ((b)->field)))
#define NM_CMP_FIELD_STR_INTERNED(a, b, field) \
G_STMT_START { \
const char *_a = ((a)->field); \
const char *_b = ((b)->field); \
\
if (_a != _b) { \
NM_CMP_RETURN (g_strcmp0 (_a, _b)); \
} \
} G_STMT_END
#define NM_CMP_FIELD_STR0(a, b, field) \
NM_CMP_RETURN (g_strcmp0 (((a)->field), ((b)->field)))
#define NM_CMP_FIELD_MEMCMP_LEN(a, b, field, len) \
NM_CMP_RETURN (memcmp (&((a)->field), &((b)->field), \
MIN (len, sizeof ((a)->field))))
#define NM_CMP_FIELD_MEMCMP(a, b, field) \
NM_CMP_RETURN (memcmp (&((a)->field), \
&((b)->field), \
sizeof ((a)->field)))
#define NM_CMP_FIELD_IN6ADDR(a, b, field) \
G_STMT_START { \
const struct in6_addr *const _a = &((a)->field); \
const struct in6_addr *const _b = &((b)->field); \
NM_CMP_RETURN (memcmp (_a, _b, sizeof (struct in6_addr))); \
} G_STMT_END
/*****************************************************************************/
static inline gboolean
nm_utils_mem_all_zero (gconstpointer mem, gsize len)
{
const guint8 *p;
for (p = mem; len-- > 0; p++) {
if (*p != 0)
return FALSE;
}
/* incidentally, a buffer with len==0, is also *all-zero*. */
return TRUE;
}
/*****************************************************************************/
/* like g_memdup(). The difference is that the @size argument is of type
* gsize, while g_memdup() has type guint. Since, the size of container types
* like GArray is guint as well, this means trying to g_memdup() an
* array,
* g_memdup (array->data, array->len * sizeof (ElementType))
* will lead to integer overflow, if there are more than G_MAXUINT/sizeof(ElementType)
* bytes. That seems unnecessarily dangerous to me.
* nm_memdup() avoids that, because its size argument is always large enough
* to contain all data that a GArray can hold.
*
* Another minor difference to g_memdup() is that the glib version also
* returns %NULL if @data is %NULL. E.g. g_memdup(NULL, 1)
* gives %NULL, but nm_memdup(NULL, 1) crashes. I think that
* is desirable, because @size MUST be correct at all times. @size
* may be zero, but one must not claim to have non-zero bytes when
* passing a %NULL @data pointer.
*/
static inline gpointer
nm_memdup (gconstpointer data, gsize size)
{
gpointer p;
if (size == 0)
return NULL;
p = g_malloc (size);
memcpy (p, data, size);
return p;
}
/*****************************************************************************/
extern const void *const _NM_PTRARRAY_EMPTY[1];
#define NM_PTRARRAY_EMPTY(type) ((type const*) _NM_PTRARRAY_EMPTY)
static inline void
_nm_utils_strbuf_init (char *buf, gsize len, char **p_buf_ptr, gsize *p_buf_len)
{
NM_SET_OUT (p_buf_len, len);
NM_SET_OUT (p_buf_ptr, buf);
buf[0] = '\0';
}
#define nm_utils_strbuf_init(buf, p_buf_ptr, p_buf_len) \
G_STMT_START { \
G_STATIC_ASSERT (G_N_ELEMENTS (buf) == sizeof (buf) && sizeof (buf) > sizeof (char *)); \
_nm_utils_strbuf_init ((buf), sizeof (buf), (p_buf_ptr), (p_buf_len)); \
} G_STMT_END
void nm_utils_strbuf_append (char **buf, gsize *len, const char *format, ...) _nm_printf (3, 4);
void nm_utils_strbuf_append_c (char **buf, gsize *len, char c);
void nm_utils_strbuf_append_str (char **buf, gsize *len, const char *str);
void nm_utils_strbuf_seek_end (char **buf, gsize *len);
const char *nm_strquote (char *buf, gsize buf_len, const char *str);
static inline gboolean
nm_utils_is_separator (const char c)
{
return NM_IN_SET (c, ' ', '\t');
}
/*****************************************************************************/
static inline gboolean
nm_gbytes_equal0 (GBytes *a, GBytes *b)
{
return a == b || (a && b && g_bytes_equal (a, b));
}
gboolean nm_utils_gbytes_equal_mem (GBytes *bytes,
gconstpointer mem_data,
gsize mem_len);
GVariant *nm_utils_gbytes_to_variant_ay (GBytes *bytes);
/*****************************************************************************/
static inline int
nm_utils_hexchar_to_int (char ch)
{
G_STATIC_ASSERT_EXPR ('0' < 'A');
G_STATIC_ASSERT_EXPR ('A' < 'a');
if (ch >= '0') {
if (ch <= '9')
return ch - '0';
if (ch >= 'A') {
if (ch <= 'F')
return ((int) ch) + (10 - (int) 'A');
if (ch >= 'a' && ch <= 'f')
return ((int) ch) + (10 - (int) 'a');
}
}
return -1;
}
/*****************************************************************************/
const char *nm_utils_dbus_path_get_last_component (const char *dbus_path);
int nm_utils_dbus_path_cmp (const char *dbus_path_a, const char *dbus_path_b);
/*****************************************************************************/
const char **nm_utils_strsplit_set (const char *str, const char *delimiters, gboolean allow_escaping);
gssize nm_utils_strv_find_first (char **list, gssize len, const char *needle);
char **_nm_utils_strv_cleanup (char **strv,
gboolean strip_whitespace,
gboolean skip_empty,
gboolean skip_repeated);
/*****************************************************************************/
guint32 _nm_utils_ip4_prefix_to_netmask (guint32 prefix);
guint32 _nm_utils_ip4_get_default_prefix (guint32 ip);
gboolean nm_utils_ip_is_site_local (int addr_family,
const void *address);
/*****************************************************************************/
gboolean nm_utils_parse_inaddr_bin (int addr_family,
const char *text,
gpointer out_addr);
gboolean nm_utils_parse_inaddr (int addr_family,
const char *text,
char **out_addr);
gboolean nm_utils_parse_inaddr_prefix_bin (int addr_family,
const char *text,
gpointer out_addr,
int *out_prefix);
gboolean nm_utils_parse_inaddr_prefix (int addr_family,
const char *text,
char **out_addr,
int *out_prefix);
gint64 _nm_utils_ascii_str_to_int64 (const char *str, guint base, gint64 min, gint64 max, gint64 fallback);
int _nm_utils_ascii_str_to_bool (const char *str,
int default_value);
/*****************************************************************************/
extern char _nm_utils_to_string_buffer[2096];
void nm_utils_to_string_buffer_init (char **buf, gsize *len);
gboolean nm_utils_to_string_buffer_init_null (gconstpointer obj, char **buf, gsize *len);
/*****************************************************************************/
typedef struct {
unsigned flag;
const char *name;
} NMUtilsFlags2StrDesc;
#define NM_UTILS_FLAGS2STR(f, n) { .flag = f, .name = ""n, }
#define _NM_UTILS_FLAGS2STR_DEFINE(scope, fcn_name, flags_type, ...) \
scope const char * \
fcn_name (flags_type flags, char *buf, gsize len) \
{ \
static const NMUtilsFlags2StrDesc descs[] = { \
__VA_ARGS__ \
}; \
G_STATIC_ASSERT (sizeof (flags_type) <= sizeof (unsigned)); \
return nm_utils_flags2str (descs, G_N_ELEMENTS (descs), flags, buf, len); \
};
#define NM_UTILS_FLAGS2STR_DEFINE(fcn_name, flags_type, ...) \
_NM_UTILS_FLAGS2STR_DEFINE (, fcn_name, flags_type, __VA_ARGS__)
#define NM_UTILS_FLAGS2STR_DEFINE_STATIC(fcn_name, flags_type, ...) \
_NM_UTILS_FLAGS2STR_DEFINE (static, fcn_name, flags_type, __VA_ARGS__)
const char *nm_utils_flags2str (const NMUtilsFlags2StrDesc *descs,
gsize n_descs,
unsigned flags,
char *buf,
gsize len);
/*****************************************************************************/
#define NM_UTILS_ENUM2STR(v, n) (void) 0; case v: s = ""n""; break; (void) 0
#define NM_UTILS_ENUM2STR_IGNORE(v) (void) 0; case v: break; (void) 0
#define _NM_UTILS_ENUM2STR_DEFINE(scope, fcn_name, lookup_type, int_fmt, ...) \
scope const char * \
fcn_name (lookup_type val, char *buf, gsize len) \
{ \
nm_utils_to_string_buffer_init (&buf, &len); \
if (len) { \
const char *s = NULL; \
switch (val) { \
(void) 0, \
__VA_ARGS__ \
(void) 0; \
}; \
if (s) \
g_strlcpy (buf, s, len); \
else \
g_snprintf (buf, len, "(%"int_fmt")", val); \
} \
return buf; \
}
#define NM_UTILS_ENUM2STR_DEFINE(fcn_name, lookup_type, ...) \
_NM_UTILS_ENUM2STR_DEFINE (, fcn_name, lookup_type, "d", __VA_ARGS__)
#define NM_UTILS_ENUM2STR_DEFINE_STATIC(fcn_name, lookup_type, ...) \
_NM_UTILS_ENUM2STR_DEFINE (static, fcn_name, lookup_type, "d", __VA_ARGS__)
/*****************************************************************************/
#define _nm_g_slice_free_fcn_define(mem_size) \
static inline void \
_nm_g_slice_free_fcn_##mem_size (gpointer mem_block) \
{ \
g_slice_free1 (mem_size, mem_block); \
}
_nm_g_slice_free_fcn_define (1)
_nm_g_slice_free_fcn_define (2)
_nm_g_slice_free_fcn_define (4)
_nm_g_slice_free_fcn_define (8)
_nm_g_slice_free_fcn_define (10)
_nm_g_slice_free_fcn_define (12)
_nm_g_slice_free_fcn_define (16)
#define _nm_g_slice_free_fcn1(mem_size) \
({ \
void (*_fcn) (gpointer); \
\
/* If mem_size is a compile time constant, the compiler
* will be able to optimize this. Hence, you don't want
* to call this with a non-constant size argument. */ \
G_STATIC_ASSERT_EXPR ( ((mem_size) == 1) \
|| ((mem_size) == 2) \
|| ((mem_size) == 4) \
|| ((mem_size) == 8) \
|| ((mem_size) == 10) \
|| ((mem_size) == 12) \
|| ((mem_size) == 16)); \
switch ((mem_size)) { \
case 1: _fcn = _nm_g_slice_free_fcn_1; break; \
case 2: _fcn = _nm_g_slice_free_fcn_2; break; \
case 4: _fcn = _nm_g_slice_free_fcn_4; break; \
case 8: _fcn = _nm_g_slice_free_fcn_8; break; \
case 10: _fcn = _nm_g_slice_free_fcn_10; break; \
case 12: _fcn = _nm_g_slice_free_fcn_12; break; \
case 16: _fcn = _nm_g_slice_free_fcn_16; break; \
default: g_assert_not_reached (); _fcn = NULL; break; \
} \
_fcn; \
})
/**
* nm_g_slice_free_fcn:
* @type: type argument for sizeof() operator that you would
* pass to g_slice_new().
*
* Returns: a function pointer with GDestroyNotify signature
* for g_slice_free(type,*).
*
* Only certain types are implemented. You'll get an assertion
* using the wrong type. */
#define nm_g_slice_free_fcn(type) (_nm_g_slice_free_fcn1 (sizeof (type)))
#define nm_g_slice_free_fcn_gint64 (nm_g_slice_free_fcn (gint64))
/*****************************************************************************/
static inline int
nm_errno (int errsv)
{
/* several API returns negative errno values as errors. Normalize
* negative values to positive values.
*
* As a special case, map G_MININT to G_MAXINT. If you care about the
* distinction, then check for G_MININT before. */
return errsv >= 0
? errsv
: ((errsv == G_MININT) ? G_MAXINT : -errsv);
}
/**
* NMUtilsError:
* @NM_UTILS_ERROR_UNKNOWN: unknown or unclassified error
* @NM_UTILS_ERROR_CANCELLED_DISPOSING: when disposing an object that has
* pending aynchronous operations, the operation is cancelled with this
* error reason. Depending on the usage, this might indicate a bug because
* usually the target object should stay alive as long as there are pending
* operations.
*
* @NM_UTILS_ERROR_CONNECTION_AVAILABLE_INCOMPATIBLE: used for a very particular
* purpose during nm_device_check_connection_compatible() to indicate that
* the profile does not match the device already because their type differs.
* That is, there is a fundamental reason of trying to check a profile that
* cannot possibly match on this device.
* @NM_UTILS_ERROR_CONNECTION_AVAILABLE_UNMANAGED_DEVICE: used for a very particular
* purpose during nm_device_check_connection_available(), to indicate that the
* device is not available because it is unmanaged.
* @NM_UTILS_ERROR_CONNECTION_AVAILABLE_TEMPORARY: the profile is currently not
* available/compatible with the device, but this may be only temporary.
*
* @NM_UTILS_ERROR_INVALID_ARGUMENT: invalid argument.
*/
typedef enum {
NM_UTILS_ERROR_UNKNOWN = 0, /*< nick=Unknown >*/
NM_UTILS_ERROR_CANCELLED_DISPOSING, /*< nick=CancelledDisposing >*/
NM_UTILS_ERROR_INVALID_ARGUMENT, /*< nick=InvalidArgument >*/
/* the following codes have a special meaning and are exactly used for
* nm_device_check_connection_compatible() and nm_device_check_connection_available().
*
* Actually, their meaning is not very important (so, don't think too
* hard about the name of these error codes). What is important, is their
* relative order (i.e. the integer value of the codes). When manager
* searches for a suitable device, it will check all devices whether
* a profile can be activated. If they all fail, it will pick the error
* message from the device that returned the *highest* error code,
* in the hope that this message makes the most sense for the caller.
* */
NM_UTILS_ERROR_CONNECTION_AVAILABLE_INCOMPATIBLE,
NM_UTILS_ERROR_CONNECTION_AVAILABLE_UNMANAGED_DEVICE,
NM_UTILS_ERROR_CONNECTION_AVAILABLE_TEMPORARY,
} NMUtilsError;
#define NM_UTILS_ERROR (nm_utils_error_quark ())
GQuark nm_utils_error_quark (void);
void nm_utils_error_set_cancelled (GError **error,
gboolean is_disposing,
const char *instance_name);
gboolean nm_utils_error_is_cancelled (GError *error,
gboolean consider_is_disposing);
static inline void
nm_utils_error_set_literal (GError **error, int error_code, const char *literal)
{
g_set_error_literal (error, NM_UTILS_ERROR, error_code, literal);
}
#define nm_utils_error_set(error, error_code, ...) \
g_set_error ((error), NM_UTILS_ERROR, error_code, __VA_ARGS__)
#define nm_utils_error_set_errno(error, errsv, fmt, ...) \
g_set_error ((error), \
NM_UTILS_ERROR, \
NM_UTILS_ERROR_UNKNOWN, \
fmt, \
##__VA_ARGS__, \
g_strerror (nm_errno (errsv)))
/*****************************************************************************/
gboolean nm_g_object_set_property (GObject *object,
const char *property_name,
const GValue *value,
GError **error);
gboolean nm_g_object_set_property_boolean (GObject *object,
const char *property_name,
gboolean value,
GError **error);
gboolean nm_g_object_set_property_uint (GObject *object,
const char *property_name,
guint value,
GError **error);
GParamSpec *nm_g_object_class_find_property_from_gtype (GType gtype,
const char *property_name);
/*****************************************************************************/
typedef enum {
NM_UTILS_STR_UTF8_SAFE_FLAG_NONE = 0,
NM_UTILS_STR_UTF8_SAFE_FLAG_ESCAPE_CTRL = 0x0001,
NM_UTILS_STR_UTF8_SAFE_FLAG_ESCAPE_NON_ASCII = 0x0002,
} NMUtilsStrUtf8SafeFlags;
const char *nm_utils_buf_utf8safe_escape (gconstpointer buf, gssize buflen, NMUtilsStrUtf8SafeFlags flags, char **to_free);
const char *nm_utils_buf_utf8safe_escape_bytes (GBytes *bytes, NMUtilsStrUtf8SafeFlags flags, char **to_free);
gconstpointer nm_utils_buf_utf8safe_unescape (const char *str, gsize *out_len, gpointer *to_free);
const char *nm_utils_str_utf8safe_escape (const char *str, NMUtilsStrUtf8SafeFlags flags, char **to_free);
const char *nm_utils_str_utf8safe_unescape (const char *str, char **to_free);
char *nm_utils_str_utf8safe_escape_cp (const char *str, NMUtilsStrUtf8SafeFlags flags);
char *nm_utils_str_utf8safe_unescape_cp (const char *str);
char *nm_utils_str_utf8safe_escape_take (char *str, NMUtilsStrUtf8SafeFlags flags);
static inline void
nm_g_variant_unref_floating (GVariant *var)
{
/* often a function wants to keep a reference to an input variant.
* It uses g_variant_ref_sink() to either increase the ref-count,
* or take ownership of a possibly floating reference.
*
* If the function doesn't actually want to do anything with the
* input variant, it still must make sure that a passed in floating
* reference is consumed. Hence, this helper which:
*
* - does nothing if @var is not floating
* - unrefs (consumes) @var if it is floating. */
if (g_variant_is_floating (var))
g_variant_unref (var);
}
/*****************************************************************************/
static inline int
nm_utf8_collate0 (const char *a, const char *b)
{
if (!a)
return !b ? 0 : -1;
if (!b)
return 1;
return g_utf8_collate (a, b);
}
int nm_strcmp_p_with_data (gconstpointer a, gconstpointer b, gpointer user_data);
int nm_cmp_uint32_p_with_data (gconstpointer p_a, gconstpointer p_b, gpointer user_data);
int nm_cmp_int2ptr_p_with_data (gconstpointer p_a, gconstpointer p_b, gpointer user_data);
/*****************************************************************************/
typedef struct {
const char *name;
} NMUtilsNamedEntry;
typedef struct {
union {
NMUtilsNamedEntry named_entry;
const char *name;
};
union {
const char *value_str;
gconstpointer value_ptr;
};
} NMUtilsNamedValue;
#define nm_utils_named_entry_cmp nm_strcmp_p
#define nm_utils_named_entry_cmp_with_data nm_strcmp_p_with_data
NMUtilsNamedValue *nm_utils_named_values_from_str_dict (GHashTable *hash, guint *out_len);
gpointer *nm_utils_hash_keys_to_array (GHashTable *hash,
GCompareDataFunc compare_func,
gpointer user_data,
guint *out_len);
static inline const char **
nm_utils_strdict_get_keys (const GHashTable *hash,
gboolean sorted,
guint *out_length)
{
return (const char **) nm_utils_hash_keys_to_array ((GHashTable *) hash,
sorted ? nm_strcmp_p_with_data : NULL,
NULL,
out_length);
}
char **nm_utils_strv_make_deep_copied (const char **strv);
static inline char **
nm_utils_strv_make_deep_copied_nonnull (const char **strv)
{
return nm_utils_strv_make_deep_copied (strv) ?: g_new0 (char *, 1);
}
/*****************************************************************************/
gssize nm_utils_ptrarray_find_binary_search (gconstpointer *list,
gsize len,
gconstpointer needle,
GCompareDataFunc cmpfcn,
gpointer user_data,
gssize *out_idx_first,
gssize *out_idx_last);
gssize nm_utils_array_find_binary_search (gconstpointer list,
gsize elem_size,
gsize len,
gconstpointer needle,
GCompareDataFunc cmpfcn,
gpointer user_data);
/*****************************************************************************/
typedef gboolean (*NMUtilsHashTableEqualFunc) (gconstpointer a,
gconstpointer b);
gboolean nm_utils_hash_table_equal (const GHashTable *a,
const GHashTable *b,
gboolean treat_null_as_empty,
NMUtilsHashTableEqualFunc equal_func);
/*****************************************************************************/
void _nm_utils_strv_sort (const char **strv, gssize len);
#define nm_utils_strv_sort(strv, len) _nm_utils_strv_sort (NM_CAST_STRV_MC (strv), len)
/*****************************************************************************/
#define NM_UTILS_NS_PER_SECOND ((gint64) 1000000000)
#define NM_UTILS_NS_PER_MSEC ((gint64) 1000000)
#define NM_UTILS_MSEC_PER_SECOND ((gint64) 1000)
#define NM_UTILS_NS_TO_MSEC_CEIL(nsec) (((nsec) + (NM_UTILS_NS_PER_MSEC - 1)) / NM_UTILS_NS_PER_MSEC)
/*****************************************************************************/
int nm_utils_fd_wait_for_event (int fd, int event, gint64 timeout_ns);
ssize_t nm_utils_fd_read_loop (int fd, void *buf, size_t nbytes, bool do_poll);
int nm_utils_fd_read_loop_exact (int fd, void *buf, size_t nbytes, bool do_poll);
/*****************************************************************************/
static inline const char *
nm_utils_dbus_normalize_object_path (const char *path)
{
/* D-Bus does not allow an empty object path. Hence, whenever we mean NULL / no-object
* on D-Bus, it's path is actually "/".
*
* Normalize that away, and return %NULL in that case. */
if (path && path[0] == '/' && path[1] == '\0')
return NULL;
return path;
}
#define NM_DEFINE_GDBUS_ARG_INFO_FULL(name_, ...) \
((GDBusArgInfo *) (&((const GDBusArgInfo) { \
.ref_count = -1, \
.name = name_, \
__VA_ARGS__ \
})))
#define NM_DEFINE_GDBUS_ARG_INFO(name_, a_signature) \
NM_DEFINE_GDBUS_ARG_INFO_FULL ( \
name_, \
.signature = a_signature, \
)
#define NM_DEFINE_GDBUS_ARG_INFOS(...) \
((GDBusArgInfo **) ((const GDBusArgInfo *[]) { \
__VA_ARGS__ \
NULL, \
}))
#define NM_DEFINE_GDBUS_PROPERTY_INFO(name_, ...) \
((GDBusPropertyInfo *) (&((const GDBusPropertyInfo) { \
.ref_count = -1, \
.name = name_, \
__VA_ARGS__ \
})))
#define NM_DEFINE_GDBUS_PROPERTY_INFO_READABLE(name_, m_signature) \
NM_DEFINE_GDBUS_PROPERTY_INFO ( \
name_, \
.signature = m_signature, \
.flags = G_DBUS_PROPERTY_INFO_FLAGS_READABLE, \
)
#define NM_DEFINE_GDBUS_PROPERTY_INFOS(...) \
((GDBusPropertyInfo **) ((const GDBusPropertyInfo *[]) { \
__VA_ARGS__ \
NULL, \
}))
#define NM_DEFINE_GDBUS_SIGNAL_INFO_INIT(name_, ...) \
{ \
.ref_count = -1, \
.name = name_, \
__VA_ARGS__ \
}
#define NM_DEFINE_GDBUS_SIGNAL_INFO(name_, ...) \
((GDBusSignalInfo *) (&((const GDBusSignalInfo) NM_DEFINE_GDBUS_SIGNAL_INFO_INIT (name_, __VA_ARGS__))))
#define NM_DEFINE_GDBUS_SIGNAL_INFOS(...) \
((GDBusSignalInfo **) ((const GDBusSignalInfo *[]) { \
__VA_ARGS__ \
NULL, \
}))
#define NM_DEFINE_GDBUS_METHOD_INFO_INIT(name_, ...) \
{ \
.ref_count = -1, \
.name = name_, \
__VA_ARGS__ \
}
#define NM_DEFINE_GDBUS_METHOD_INFO(name_, ...) \
((GDBusMethodInfo *) (&((const GDBusMethodInfo) NM_DEFINE_GDBUS_METHOD_INFO_INIT (name_, __VA_ARGS__))))
#define NM_DEFINE_GDBUS_METHOD_INFOS(...) \
((GDBusMethodInfo **) ((const GDBusMethodInfo *[]) { \
__VA_ARGS__ \
NULL, \
}))
#define NM_DEFINE_GDBUS_INTERFACE_INFO_INIT(name_, ...) \
{ \
.ref_count = -1, \
.name = name_, \
__VA_ARGS__ \
}
#define NM_DEFINE_GDBUS_INTERFACE_INFO(name_, ...) \
((GDBusInterfaceInfo *) (&((const GDBusInterfaceInfo) NM_DEFINE_GDBUS_INTERFACE_INFO_INIT (name_, __VA_ARGS__))))
#define NM_DEFINE_GDBUS_INTERFACE_VTABLE(...) \
((GDBusInterfaceVTable *) (&((const GDBusInterfaceVTable) { \
__VA_ARGS__ \
})))
/*****************************************************************************/
guint64 nm_utils_get_start_time_for_pid (pid_t pid, char *out_state, pid_t *out_ppid);
/*****************************************************************************/
gpointer _nm_utils_user_data_pack (int nargs, gconstpointer *args);
#define nm_utils_user_data_pack(...) \
_nm_utils_user_data_pack(NM_NARG (__VA_ARGS__), (gconstpointer[]) { __VA_ARGS__ })
void _nm_utils_user_data_unpack (gpointer user_data, int nargs, ...);
#define nm_utils_user_data_unpack(user_data, ...) \
_nm_utils_user_data_unpack(user_data, NM_NARG (__VA_ARGS__), __VA_ARGS__)
/*****************************************************************************/
const char *_nm_utils_escape_spaces (const char *str, char **to_free);
char *_nm_utils_unescape_spaces (char *str);
#endif /* __NM_SHARED_UTILS_H__ */
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