15  *   void **p     pointer to position pointer
19 static inline u64 ceph_decode_64(void **p)  in ceph_decode_64()  argument
21 	u64 v = get_unaligned_le64(*p);  in ceph_decode_64()
22 	*p += sizeof(u64);  in ceph_decode_64()
25 static inline u32 ceph_decode_32(void **p)  in ceph_decode_32()  argument
27 	u32 v = get_unaligned_le32(*p);  in ceph_decode_32()
28 	*p += sizeof(u32);  in ceph_decode_32()
31 static inline u16 ceph_decode_16(void **p)  in ceph_decode_16()  argument
33 	u16 v = get_unaligned_le16(*p);  in ceph_decode_16()
34 	*p += sizeof(u16);  in ceph_decode_16()
37 static inline u8 ceph_decode_8(void **p)  in ceph_decode_8()  argument
39 	u8 v = *(u8 *)*p;  in ceph_decode_8()
40 	(*p)++;  in ceph_decode_8()
43 static inline void ceph_decode_copy(void **p, void *pv, size_t n)  in ceph_decode_copy()  argument
45 	memcpy(pv, *p, n);  in ceph_decode_copy()
46 	*p += n;  in ceph_decode_copy()
52 static inline bool ceph_has_room(void **p, void *end, size_t n)  in ceph_has_room()  argument
54 	return end >= *p && n <= end - *p;  in ceph_has_room()
57 #define ceph_decode_need(p, end, n, bad)			\  argument
59 		if (!likely(ceph_has_room(p, end, n)))		\
63 #define ceph_decode_64_safe(p, end, v, bad)			\  argument
65 		ceph_decode_need(p, end, sizeof(u64), bad);	\
66 		v = ceph_decode_64(p);				\
68 #define ceph_decode_32_safe(p, end, v, bad)			\  argument
70 		ceph_decode_need(p, end, sizeof(u32), bad);	\
71 		v = ceph_decode_32(p);				\
73 #define ceph_decode_16_safe(p, end, v, bad)			\  argument
75 		ceph_decode_need(p, end, sizeof(u16), bad);	\
76 		v = ceph_decode_16(p);				\
78 #define ceph_decode_8_safe(p, end, v, bad)			\  argument
80 		ceph_decode_need(p, end, sizeof(u8), bad);	\
81 		v = ceph_decode_8(p);				\
84 #define ceph_decode_copy_safe(p, end, pv, n, bad)		\  argument
86 		ceph_decode_need(p, end, n, bad);		\
87 		ceph_decode_copy(p, pv, n);			\
93  * terminated with '\0'.  If successful, *p will be advanced
99  * pointer-coded errno if an error occurs.  Neither *p nor *lenp
107 static inline char *ceph_extract_encoded_string(void **p, void *end,  in ceph_extract_encoded_string()  argument
111 	void *sp = *p;  in ceph_extract_encoded_string()
126 	*p = (char *) *p + sizeof (u32) + len;  in ceph_extract_encoded_string()
139 #define ceph_decode_skip_n(p, end, n, bad)			\  argument
141 		ceph_decode_need(p, end, n, bad);		\
142                 *p += n;					\
145 #define ceph_decode_skip_64(p, end, bad)			\  argument
146 ceph_decode_skip_n(p, end, sizeof(u64), bad)
148 #define ceph_decode_skip_32(p, end, bad)			\  argument
149 ceph_decode_skip_n(p, end, sizeof(u32), bad)
151 #define ceph_decode_skip_16(p, end, bad)			\  argument
152 ceph_decode_skip_n(p, end, sizeof(u16), bad)
154 #define ceph_decode_skip_8(p, end, bad)				\  argument
155 ceph_decode_skip_n(p, end, sizeof(u8), bad)
157 #define ceph_decode_skip_string(p, end, bad)			\  argument
161 		ceph_decode_32_safe(p, end, len, bad);		\
162 		ceph_decode_skip_n(p, end, len, bad);		\
165 #define ceph_decode_skip_set(p, end, type, bad)			\  argument
169 		ceph_decode_32_safe(p, end, len, bad);		\
171 			ceph_decode_skip_##type(p, end, bad);	\
174 #define ceph_decode_skip_map(p, end, ktype, vtype, bad)		\  argument
178 		ceph_decode_32_safe(p, end, len, bad);		\
180 			ceph_decode_skip_##ktype(p, end, bad);	\
181 			ceph_decode_skip_##vtype(p, end, bad);	\
185 #define ceph_decode_skip_map_of_map(p, end, ktype1, ktype2, vtype2, bad) \  argument
189 		ceph_decode_32_safe(p, end, len, bad);		\
191 			ceph_decode_skip_##ktype1(p, end, bad);	\
192 			ceph_decode_skip_map(p, end, ktype2, vtype2, bad); \
240 extern int ceph_decode_entity_addr(void **p, void *end,
245 static inline void ceph_encode_64(void **p, u64 v)  in ceph_encode_64()  argument
247 	put_unaligned_le64(v, (__le64 *)*p);  in ceph_encode_64()
248 	*p += sizeof(u64);  in ceph_encode_64()
250 static inline void ceph_encode_32(void **p, u32 v)  in ceph_encode_32()  argument
252 	put_unaligned_le32(v, (__le32 *)*p);  in ceph_encode_32()
253 	*p += sizeof(u32);  in ceph_encode_32()
255 static inline void ceph_encode_16(void **p, u16 v)  in ceph_encode_16()  argument
257 	put_unaligned_le16(v, (__le16 *)*p);  in ceph_encode_16()
258 	*p += sizeof(u16);  in ceph_encode_16()
260 static inline void ceph_encode_8(void **p, u8 v)  in ceph_encode_8()  argument
262 	*(u8 *)*p = v;  in ceph_encode_8()
263 	(*p)++;  in ceph_encode_8()
265 static inline void ceph_encode_copy(void **p, const void *s, int len)  in ceph_encode_copy()  argument
267 	memcpy(*p, s, len);  in ceph_encode_copy()
268 	*p += len;  in ceph_encode_copy()
274 static inline void ceph_encode_filepath(void **p, void *end,  in ceph_encode_filepath()  argument
278 	BUG_ON(*p + 1 + sizeof(ino) + sizeof(len) + len > end);  in ceph_encode_filepath()
279 	ceph_encode_8(p, 1);  in ceph_encode_filepath()
280 	ceph_encode_64(p, ino);  in ceph_encode_filepath()
281 	ceph_encode_32(p, len);  in ceph_encode_filepath()
283 		memcpy(*p, path, len);  in ceph_encode_filepath()
284 	*p += len;  in ceph_encode_filepath()
287 static inline void ceph_encode_string(void **p, void *end,  in ceph_encode_string()  argument
290 	BUG_ON(*p + sizeof(len) + len > end);  in ceph_encode_string()
291 	ceph_encode_32(p, len);  in ceph_encode_string()
293 		memcpy(*p, s, len);  in ceph_encode_string()
294 	*p += len;  in ceph_encode_string()
310 static inline void ceph_start_encoding(void **p, u8 struct_v, u8 struct_compat,  in ceph_start_encoding()  argument
313 	ceph_encode_8(p, struct_v);  in ceph_start_encoding()
314 	ceph_encode_8(p, struct_compat);  in ceph_start_encoding()
315 	ceph_encode_32(p, struct_len);  in ceph_start_encoding()
328 static inline int ceph_start_decoding(void **p, void *end, u8 v,  in ceph_start_decoding()  argument
334 	ceph_decode_need(p, end, CEPH_ENCODING_START_BLK_LEN, bad);  in ceph_start_decoding()
335 	*struct_v = ceph_decode_8(p);  in ceph_start_decoding()
336 	struct_compat = ceph_decode_8(p);  in ceph_start_decoding()
343 	*struct_len = ceph_decode_32(p);  in ceph_start_decoding()
344 	ceph_decode_need(p, end, *struct_len, bad);  in ceph_start_decoding()
351 #define ceph_encode_need(p, end, n, bad)			\  argument
353 		if (!likely(ceph_has_room(p, end, n)))		\
357 #define ceph_encode_64_safe(p, end, v, bad)			\  argument
359 		ceph_encode_need(p, end, sizeof(u64), bad);	\
360 		ceph_encode_64(p, v);				\
362 #define ceph_encode_32_safe(p, end, v, bad)			\  argument
364 		ceph_encode_need(p, end, sizeof(u32), bad);	\
365 		ceph_encode_32(p, v);				\
367 #define ceph_encode_16_safe(p, end, v, bad)			\  argument
369 		ceph_encode_need(p, end, sizeof(u16), bad);	\
370 		ceph_encode_16(p, v);				\
372 #define ceph_encode_8_safe(p, end, v, bad)			\  argument
374 		ceph_encode_need(p, end, sizeof(u8), bad);	\
375 		ceph_encode_8(p, v);				\
378 #define ceph_encode_copy_safe(p, end, pv, n, bad)		\  argument
380 		ceph_encode_need(p, end, n, bad);		\
381 		ceph_encode_copy(p, pv, n);			\
383 #define ceph_encode_string_safe(p, end, s, n, bad)		\  argument
385 		ceph_encode_need(p, end, n, bad);		\
386 		ceph_encode_string(p, end, s, n);		\