1 /* 2 * HCLINK.H 3 * 4 * $DragonFly: src/bin/cpdup/hclink.h,v 1.7 2008/05/24 17:21:36 dillon Exp $ 5 */ 6 7 #ifndef _HCLINK_H_ 8 #define _HCLINK_H_ 9 10 struct HCHostDesc { 11 struct HCHostDesc *next; 12 int desc; 13 int type; 14 void *data; 15 }; 16 17 struct HostConf; 18 19 typedef struct HCTransaction { 20 struct HCTransaction *next; 21 struct HostConf *hc; 22 u_int16_t id; /* assigned transaction id */ 23 int windex; /* output buffer index */ 24 enum { HCT_IDLE, HCT_SENT, HCT_REPLIED, HCT_DONE } state; 25 char rbuf[65536]; /* input buffer */ 26 char wbuf[65536]; /* output buffer */ 27 } *hctransaction_t; 28 29 struct HostConf { 30 char *host; /* [user@]host */ 31 int fdin; /* pipe */ 32 int fdout; /* pipe */ 33 int error; /* permanent failure code */ 34 pid_t pid; 35 int version; /* cpdup protocol version */ 36 struct HCHostDesc *hostdescs; 37 struct HCTransaction trans; 38 }; 39 40 struct HCHead { 41 int32_t magic; /* magic number / byte ordering */ 42 int32_t bytes; /* size of packet */ 43 int16_t cmd; /* command code */ 44 u_int16_t id; /* transaction id */ 45 int32_t error; /* error code (response) */ 46 }; 47 48 #define HCMAGIC 0x48435052 /* compatible byte ordering */ 49 #define HCMAGIC_REV 0x52504348 /* reverse byte ordering */ 50 #define HCC_ALIGN(bytes) (((bytes) + 7) & ~7) 51 52 struct HCLeaf { 53 int16_t leafid; 54 int16_t reserved; /* reserved must be 0 */ 55 int32_t bytes; 56 }; 57 58 #define HCF_REPLY 0x8000 /* reply */ 59 60 #define LCF_TYPEMASK 0x0F00 61 #define LCF_INT32 0x0100 /* 4 byte integer */ 62 #define LCF_INT64 0x0200 /* 8 byte integer */ 63 #define LCF_STRING 0x0300 /* string, must be 0-terminated */ 64 #define LCF_BINARY 0x0F00 /* binary data */ 65 66 #define LCF_NESTED 0x8000 67 68 struct HCDesc { 69 int16_t cmd; 70 int (*func)(hctransaction_t, struct HCHead *); 71 }; 72 73 /* 74 * Item extraction macros 75 */ 76 #define HCC_STRING(item) ((const char *)((item) + 1)) 77 #define HCC_INT32(item) (*(int32_t *)((item) + 1)) 78 #define HCC_INT64(item) (*(int64_t *)((item) + 1)) 79 #define HCC_BINARYDATA(item) ((void *)((item) + 1)) 80 81 /* 82 * Prototypes 83 */ 84 int hcc_connect(struct HostConf *hc); 85 int hcc_slave(int fdin, int fdout, struct HCDesc *descs, int count); 86 87 hctransaction_t hcc_start_command(struct HostConf *hc, int16_t cmd); 88 struct HCHead *hcc_finish_command(hctransaction_t trans); 89 void hcc_leaf_string(hctransaction_t trans, int16_t leafid, const char *str); 90 void hcc_leaf_data(hctransaction_t trans, int16_t leafid, const void *ptr, int bytes); 91 void hcc_leaf_int32(hctransaction_t trans, int16_t leafid, int32_t value); 92 void hcc_leaf_int64(hctransaction_t trans, int16_t leafid, int64_t value); 93 94 int hcc_alloc_descriptor(struct HostConf *hc, void *ptr, int type); 95 void *hcc_get_descriptor(struct HostConf *hc, int desc, int type); 96 void hcc_set_descriptor(struct HostConf *hc, int desc, void *ptr, int type); 97 98 struct HCLeaf *hcc_firstitem(struct HCHead *head); 99 struct HCLeaf *hcc_nextitem(struct HCHead *head, struct HCLeaf *item); 100 101 void hcc_debug_dump(struct HCHead *head); 102 void hcc_free_trans(struct HostConf *hc); 103 104 #endif 105 106