bin/cpdup/hclink.h

   1 /*
   2  * HCLINK.H
   3  *
   4  * $DragonFly: src/bin/cpdup/hclink.h,v 1.5 2008/04/14 05:40:51 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 #if USE_PTHREADS
  26     pthread_t   tid;
  27 #endif
  28     char        rbuf[65536];    /* input buffer */
  29     char        wbuf[65536];    /* output buffer */
  30 } *hctransaction_t;
  31
  32 #if USE_PTHREADS
  33 #define HCTHASH_SIZE    16
  34 #define HCTHASH_MASK    (HCTHASH_SIZE - 1)
  35 #endif
  36
  37 struct HostConf {
  38     char        *host;          /* [user@]host */
  39     int         fdin;           /* pipe */
  40     int         fdout;          /* pipe */
  41     int         error;          /* permanent failure code */
  42     pid_t       pid;
  43     int         version;        /* cpdup protocol version */
  44     struct HCHostDesc *hostdescs;
  45 #if USE_PTHREADS
  46     pthread_mutex_t read_mutex;
  47     hctransaction_t hct_hash[HCTHASH_SIZE];
  48 #else
  49     struct HCTransaction trans;
  50 #endif
  51 };
  52
  53 struct HCHead {
  54     int32_t magic;              /* magic number / byte ordering */
  55     int32_t bytes;              /* size of packet */
  56     int16_t cmd;                /* command code */
  57     u_int16_t id;                       /* transaction id */
  58     int32_t error;              /* error code (response) */
  59 };
  60
  61 #define HCMAGIC         0x48435052      /* compatible byte ordering */
  62 #define HCMAGIC_REV     0x52504348      /* reverse byte ordering */
  63 #define HCC_ALIGN(bytes)        (((bytes) + 7) & ~7)
  64
  65 struct HCLeaf {
  66     int16_t leafid;
  67     int16_t reserved;           /* reserved must be 0 */
  68     int32_t bytes;
  69 };
  70
  71 #define HCF_REPLY       0x8000          /* reply */
  72
  73 #define LCF_TYPEMASK    0x0F00
  74 #define LCF_INT32       0x0100          /* 4 byte integer */
  75 #define LCF_INT64       0x0200          /* 8 byte integer */
  76 #define LCF_STRING      0x0300          /* string, must be 0-terminated */
  77 #define LCF_BINARY      0x0F00          /* binary data */
  78
  79 #define LCF_NESTED      0x8000
  80
  81 struct HCDesc {
  82     int16_t cmd;
  83     int (*func)(hctransaction_t, struct HCHead *);
  84 };
  85
  86 /*
  87  * Item extraction macros
  88  */
  89 #define HCC_STRING(item)        ((const char *)((item) + 1))
  90 #define HCC_INT32(item)         (*(int32_t *)((item) + 1))
  91 #define HCC_INT64(item)         (*(int64_t *)((item) + 1))
  92 #define HCC_BINARYDATA(item)    ((void *)((item) + 1))
  93
  94 /*
  95  * Prototypes
  96  */
  97 int hcc_connect(struct HostConf *hc);
  98 int hcc_slave(int fdin, int fdout, struct HCDesc *descs, int count);
  99
 100 hctransaction_t hcc_start_command(struct HostConf *hc, int16_t cmd);
 101 struct HCHead *hcc_finish_command(hctransaction_t trans);
 102 void hcc_leaf_string(hctransaction_t trans, int16_t leafid, const char *str);
 103 void hcc_leaf_data(hctransaction_t trans, int16_t leafid, const void *ptr, int bytes);
 104 void hcc_leaf_int32(hctransaction_t trans, int16_t leafid, int32_t value);
 105 void hcc_leaf_int64(hctransaction_t trans, int16_t leafid, int64_t value);
 106
 107 int hcc_alloc_descriptor(struct HostConf *hc, void *ptr, int type);
 108 void *hcc_get_descriptor(struct HostConf *hc, int desc, int type);
 109 void hcc_set_descriptor(struct HostConf *hc, int desc, void *ptr, int type);
 110
 111 struct HCLeaf *hcc_firstitem(struct HCHead *head);
 112 struct HCLeaf *hcc_nextitem(struct HCHead *head, struct HCLeaf *item);
 113
 114 void hcc_debug_dump(struct HCHead *head);
 115 void hcc_free_trans(struct HostConf *hc);
 116
 117 #endif
 118