*
* Copyright (C) 2010 Felix Fietkau <nbd@openwrt.org>
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License version 2.1
- * as published by the Free Software Foundation
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
*
- * This program 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 General Public License for more details.
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef _BLOB_H__
#include <stdio.h>
#include <errno.h>
-#if __BYTE_ORDER == __LITTLE_ENDIAN
-
-#if defined(__linux__) || defined(__CYGWIN__)
-#include <byteswap.h>
-#include <endian.h>
-
-#elif defined(__APPLE__)
-#include <machine/endian.h>
-#include <machine/byte_order.h>
-#define bswap_16(x) OSSwapInt16(x)
-#define bswap_32(x) OSSwapInt32(x)
-#define bswap_64(x) OSSwapInt64(x)
-#elif defined(__FreeBSD__)
-#include <sys/endian.h>
-#define bswap_16(x) bswap16(x)
-#define bswap_32(x) bswap32(x)
-#define bswap_64(x) bswap64(x)
-#else
-#include <machine/endian.h>
-#define bswap_16(x) swap16(x)
-#define bswap_32(x) swap32(x)
-#define bswap_64(x) swap64(x)
-#endif
-
-#ifndef __BYTE_ORDER
-#define __BYTE_ORDER BYTE_ORDER
-#endif
-#ifndef __BIG_ENDIAN
-#define __BIG_ENDIAN BIG_ENDIAN
-#endif
-#ifndef __LITTLE_ENDIAN
-#define __LITTLE_ENDIAN LITTLE_ENDIAN
-#endif
-
-#define cpu_to_be64(x) bswap_64(x)
-#define cpu_to_be32(x) bswap_32(x)
-#define cpu_to_be16(x) bswap_16(x)
-
-#define be64_to_cpu(x) bswap_64(x)
-#define be32_to_cpu(x) bswap_32(x)
-#define be16_to_cpu(x) bswap_16(x)
-
-#else
-
-#define cpu_to_be64(x) (x)
-#define cpu_to_be32(x) (x)
-#define cpu_to_be16(x) (x)
+#include "utils.h"
-#define be64_to_cpu(x) (x)
-#define be32_to_cpu(x) (x)
-#define be16_to_cpu(x) (x)
-
-#endif
+#define BLOB_COOKIE 0x01234567
enum {
BLOB_ATTR_UNSPEC,
BLOB_ATTR_LAST
};
-#define BLOB_ATTR_ID_MASK 0xff000000
+#define BLOB_ATTR_ID_MASK 0x7f000000
#define BLOB_ATTR_ID_SHIFT 24
#define BLOB_ATTR_LEN_MASK 0x00ffffff
#define BLOB_ATTR_ALIGN 4
-
-#ifndef __packed
-#define __packed __attribute__((packed))
-#endif
+#define BLOB_ATTR_EXTENDED 0x80000000
struct blob_attr {
uint32_t id_len;
* blob_data: returns the data pointer for an attribute
*/
static inline void *
-blob_data(struct blob_attr *attr)
+blob_data(const struct blob_attr *attr)
{
- return attr->data;
+ return (void *) attr->data;
}
/*
* blob_id: returns the id of an attribute
*/
static inline unsigned int
-blob_id(struct blob_attr *attr)
+blob_id(const struct blob_attr *attr)
{
int id = (be32_to_cpu(attr->id_len) & BLOB_ATTR_ID_MASK) >> BLOB_ATTR_ID_SHIFT;
return id;
}
+static inline bool
+blob_is_extended(const struct blob_attr *attr)
+{
+ return !!(attr->id_len & cpu_to_be32(BLOB_ATTR_EXTENDED));
+}
+
/*
* blob_len: returns the length of the attribute's payload
*/
}
/*
- * blob_pad_len: returns the complete length of an attribute (including the header)
+ * blob_raw_len: returns the complete length of an attribute (including the header)
*/
static inline unsigned int
-blob_raw_len(struct blob_attr *attr)
+blob_raw_len(const struct blob_attr *attr)
{
return blob_len(attr) + sizeof(struct blob_attr);
}
* blob_pad_len: returns the padded length of an attribute (including the header)
*/
static inline unsigned int
-blob_pad_len(struct blob_attr *attr)
+blob_pad_len(const struct blob_attr *attr)
{
- int len = blob_raw_len(attr);
+ unsigned int len = blob_raw_len(attr);
len = (len + BLOB_ATTR_ALIGN - 1) & ~(BLOB_ATTR_ALIGN - 1);
return len;
}
-static inline void
-blob_set_raw_len(struct blob_attr *attr, unsigned int len)
-{
- int id = blob_id(attr);
- len &= BLOB_ATTR_LEN_MASK;
- len |= (id << BLOB_ATTR_ID_SHIFT) & BLOB_ATTR_ID_MASK;
- attr->id_len = cpu_to_be32(len);
-}
-
static inline uint8_t
-blob_get_int8(struct blob_attr *attr)
+blob_get_u8(const struct blob_attr *attr)
{
return *((uint8_t *) attr->data);
}
static inline uint16_t
-blob_get_int16(struct blob_attr *attr)
+blob_get_u16(const struct blob_attr *attr)
{
uint16_t *tmp = (uint16_t*)attr->data;
return be16_to_cpu(*tmp);
}
static inline uint32_t
-blob_get_int32(struct blob_attr *attr)
+blob_get_u32(const struct blob_attr *attr)
{
uint32_t *tmp = (uint32_t*)attr->data;
return be32_to_cpu(*tmp);
}
static inline uint64_t
-blob_get_int64(struct blob_attr *attr)
+blob_get_u64(const struct blob_attr *attr)
+{
+ uint32_t *ptr = (uint32_t *) blob_data(attr);
+ uint64_t tmp = ((uint64_t) be32_to_cpu(ptr[0])) << 32;
+ tmp |= be32_to_cpu(ptr[1]);
+ return tmp;
+}
+
+static inline int8_t
+blob_get_int8(const struct blob_attr *attr)
+{
+ return blob_get_u8(attr);
+}
+
+static inline int16_t
+blob_get_int16(const struct blob_attr *attr)
+{
+ return blob_get_u16(attr);
+}
+
+static inline int32_t
+blob_get_int32(const struct blob_attr *attr)
{
- uint64_t *tmp = (uint64_t*)attr->data;
- return be64_to_cpu(*tmp);
+ return blob_get_u32(attr);
+}
+
+static inline int64_t
+blob_get_int64(const struct blob_attr *attr)
+{
+ return blob_get_u64(attr);
}
static inline const char *
-blob_get_string(struct blob_attr *attr)
+blob_get_string(const struct blob_attr *attr)
{
return attr->data;
}
static inline struct blob_attr *
-blob_next(struct blob_attr *attr)
+blob_next(const struct blob_attr *attr)
{
return (struct blob_attr *) ((char *) attr + blob_pad_len(attr));
}
+extern void blob_fill_pad(struct blob_attr *attr);
+extern void blob_set_raw_len(struct blob_attr *attr, unsigned int len);
+extern bool blob_attr_equal(const struct blob_attr *a1, const struct blob_attr *a2);
extern int blob_buf_init(struct blob_buf *buf, int id);
+extern void blob_buf_free(struct blob_buf *buf);
+extern bool blob_buf_grow(struct blob_buf *buf, int required);
extern struct blob_attr *blob_new(struct blob_buf *buf, int id, int payload);
extern void *blob_nest_start(struct blob_buf *buf, int id);
extern void blob_nest_end(struct blob_buf *buf, void *cookie);
-extern struct blob_attr *blob_put(struct blob_buf *buf, int id, const void *ptr, int len);
-extern bool blob_check_type(void *ptr, int len, int type);
+extern struct blob_attr *blob_put(struct blob_buf *buf, int id, const void *ptr, unsigned int len);
+extern bool blob_check_type(const void *ptr, unsigned int len, int type);
extern int blob_parse(struct blob_attr *attr, struct blob_attr **data, const struct blob_attr_info *info, int max);
+extern struct blob_attr *blob_memdup(struct blob_attr *attr);
+extern struct blob_attr *blob_put_raw(struct blob_buf *buf, const void *ptr, unsigned int len);
static inline struct blob_attr *
blob_put_string(struct blob_buf *buf, int id, const char *str)
}
static inline struct blob_attr *
-blob_put_int8(struct blob_buf *buf, int id, uint8_t val)
+blob_put_u8(struct blob_buf *buf, int id, uint8_t val)
{
return blob_put(buf, id, &val, sizeof(val));
}
static inline struct blob_attr *
-blob_put_int16(struct blob_buf *buf, int id, uint16_t val)
+blob_put_u16(struct blob_buf *buf, int id, uint16_t val)
{
val = cpu_to_be16(val);
return blob_put(buf, id, &val, sizeof(val));
}
static inline struct blob_attr *
-blob_put_int32(struct blob_buf *buf, int id, uint32_t val)
+blob_put_u32(struct blob_buf *buf, int id, uint32_t val)
{
val = cpu_to_be32(val);
return blob_put(buf, id, &val, sizeof(val));
}
static inline struct blob_attr *
-blob_put_int64(struct blob_buf *buf, int id, uint64_t val)
+blob_put_u64(struct blob_buf *buf, int id, uint64_t val)
{
val = cpu_to_be64(val);
return blob_put(buf, id, &val, sizeof(val));
}
+#define blob_put_int8 blob_put_u8
+#define blob_put_int16 blob_put_u16
+#define blob_put_int32 blob_put_u32
+#define blob_put_int64 blob_put_u64
+
#define __blob_for_each_attr(pos, attr, rem) \
for (pos = (void *) attr; \
- (blob_pad_len(pos) <= rem) && \
- (blob_pad_len(pos) >= sizeof(struct blob_attr)); \
- rem -= blob_pad_len(pos), pos = blob_next(pos))
+ rem > 0 && (blob_pad_len(pos) <= rem) && \
+ (blob_pad_len(pos) >= sizeof(struct blob_attr)); \
+ rem -= blob_pad_len(pos), pos = blob_next(pos))
#define blob_for_each_attr(pos, attr, rem) \
- for (rem = blob_len(attr), pos = blob_data(attr); \
- (blob_pad_len(pos) <= rem) && \
- (blob_pad_len(pos) >= sizeof(struct blob_attr)); \
- rem -= blob_pad_len(pos), pos = blob_next(pos))
+ for (rem = attr ? blob_len(attr) : 0, \
+ pos = attr ? blob_data(attr) : 0; \
+ rem > 0 && (blob_pad_len(pos) <= rem) && \
+ (blob_pad_len(pos) >= sizeof(struct blob_attr)); \
+ rem -= blob_pad_len(pos), pos = blob_next(pos))
#endif
projects / project / libubox.git / blobdiff