bin/cpdup/hclink.h

   1 /*
   2  * HCLINK.H
   3  *
   4  * $DragonFly: src/bin/cpdup/hclink.h,v 1.1 2006/08/13 22:51:40 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     char *host;         /* [user@]host */
  19     int fdin;           /* pipe */
  20     int fdout;          /* pipe */
  21     int error;          /* permanent failure code */
  22     pid_t pid;
  23     int windex;         /* output buffer index */
  24     struct HCHostDesc *hostdescs;
  25     char rbuf[65536];   /* output buffer */
  26     char wbuf[65536];   /* output buffer */
  27 };
  28
  29 struct HCHead {
  30     int32_t magic;              /* magic number / byte ordering */
  31     int32_t bytes;              /* size of packet */
  32     int16_t cmd;                /* command code */
  33     int16_t id;                 /* transaction id */
  34     int32_t error;              /* error code (response) */
  35 };
  36
  37 #define HCMAGIC         0x48435052      /* compatible byte ordering */
  38 #define HCMAGIC_REV     0x52504348      /* reverse byte ordering */
  39 #define HCC_ALIGN(bytes)        (((bytes) + 7) & ~7)
  40
  41 struct HCLeaf {
  42     int16_t leafid;
  43     int16_t reserved;           /* reserved must be 0 */
  44     int32_t bytes;
  45 };
  46
  47 #define HCF_REPLY       0x8000          /* reply */
  48
  49 #define LCF_TYPEMASK    0x0F00
  50 #define LCF_INT32       0x0100          /* 4 byte integer */
  51 #define LCF_INT64       0x0200          /* 8 byte integer */
  52 #define LCF_STRING      0x0300          /* string, must be 0-terminated */
  53 #define LCF_BINARY      0x0F00          /* binary data */
  54
  55 #define LCF_NESTED      0x8000
  56
  57 struct HCDesc {
  58     int16_t cmd;
  59     int (*func)(struct HostConf *, struct HCHead *);
  60 };
  61
  62 /*
  63  * Item extraction macros
  64  */
  65 #define HCC_STRING(item)        ((const char *)((item) + 1))
  66 #define HCC_INT32(item)         (*(int32_t *)((item) + 1))
  67 #define HCC_INT64(item)         (*(int64_t *)((item) + 1))
  68 #define HCC_BINARYDATA(item)    ((void *)((item) + 1))
  69
  70 /*
  71  * Prototypes
  72  */
  73 int hcc_connect(struct HostConf *hc);
  74 int hcc_slave(int fdin, int fdout, struct HCDesc *descs, int count);
  75
  76 void hcc_start_command(struct HostConf *hc, int16_t cmd);
  77 struct HCHead *hcc_finish_command(struct HostConf *hc);
  78 void hcc_leaf_string(struct HostConf *hc, int16_t leafid, const char *str);
  79 void hcc_leaf_data(struct HostConf *hc, int16_t leafid, const void *ptr, int bytes);
  80 void hcc_leaf_int32(struct HostConf *hc, int16_t leafid, int32_t value);
  81 void hcc_leaf_int64(struct HostConf *hc, int16_t leafid, int64_t value);
  82
  83 int hcc_alloc_descriptor(struct HostConf *hc, void *ptr, int type);
  84 void *hcc_get_descriptor(struct HostConf *hc, int desc, int type);
  85 void hcc_set_descriptor(struct HostConf *hc, int desc, void *ptr, int type);
  86
  87 struct HCLeaf *hcc_firstitem(struct HCHead *head);
  88 struct HCLeaf *hcc_nextitem(struct HCHead *head, struct HCLeaf *item);
  89
  90 void hcc_debug_dump(struct HCHead *head);
  91
  92 #endif
  93