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Annotation of researchv9/netb/src/share.h, revision 1.1

1.1     ! root        1: /* the makefile has to -I the proper directories */
        !             2: #ifndef ns32000                /* wretched sequent nonsense */
        !             3: #include "types.h"
        !             4: #endif
        !             5: #include "param.h"
        !             6: #include "stat.h"
        !             7: #include "errno.h"
        !             8: 
        !             9: /* what the tags refer to */
        !            10: typedef struct {
        !            11:        unsigned char *name;    /* the full path name */
        !            12:        int fd;         /* the file descriptor i've got */
        !            13:        char flags;     /* 1=>read-only */
        !            14:        struct stat stb;        /* for various purposes */
        !            15:        long tag;
        !            16:        unsigned long pos;      /* cache to avoid some lseeks */
        !            17: } file;
        !            18: extern file files[];
        !            19: #if sun
        !            20: #define        FILES   28
        !            21: #else
        !            22: #define        FILES   128
        !            23: #endif
        !            24: 
        !            25: /* with this setup, permissions have to be checked on every read/write,
        !            26:  * which doesn't quite match unix semantics. */
        !            27: 
        !            28: /* translation table between host devs and client devs */
        !            29: typedef struct {
        !            30:        int hdev, cdev;
        !            31: } dev;
        !            32: extern dev *devs;
        !            33: extern int ndev;
        !            34: /* file descriptors */
        !            35: extern int cfd;                /* talk to client */
        !            36: extern int dbgfd;      /* debugging output */
        !            37: extern int pfd;                /* used to read the exceptions during perm setup */
        !            38: 
        !            39: extern int errno;
        !            40: 
        !            41: /* the big server structure, translates from and to client messages */
        !            42: /* the types have to be adjusted to cope with new kinds of clients */
        !            43: extern struct client {
        !            44:        char cmd;
        !            45:        char flags;
        !            46:        long trannum;
        !            47:        long len;
        !            48:        long tag;
        !            49:        short uid, gid;
        !            50:        unsigned short mode;
        !            51:        long ta, tm, tc;        /* (&ta)[1] must be tm */
        !            52:        long offset;
        !            53:        long count;     /* len for read or write */
        !            54:        int dev;
        !            55:        long ino;       /* for linking */
        !            56:        /* additional stuff for responses */
        !            57:        short errno;
        !            58:        long size;
        !            59:        long resplen;
        !            60:        short nlink;
        !            61:        int used;
        !            62:        short namiflags;
        !            63: } client;
        !            64: 
        !            65: extern unsigned char *inbuf, *nmbuf;
        !            66: extern unsigned char *slash;   /* pos of last slash in nmbuf */
        !            67: extern int inlen, iamroot;
        !            68: extern int nmoffset;   /* used to compute client.used */
        !            69: extern int hisdev;     /* the major device the client thinks we are */
        !            70: extern int roottag;    /* root's tag */
        !            71: extern int otherok;    /* host other perms for mystery users from client? */
        !            72: 
        !            73: /* these are the nami flags, and have to be the same as in the client! (inode.h) */
        !            74: #define NI_DEL 1       /* unlink this file */
        !            75: #define NI_CREAT 2     /* create it if it doesn't exits */
        !            76: #define NI_NXCREAT 3   /* create it, error if it already exists */
        !            77: #define NI_LINK        4       /* make a link */
        !            78: #define NI_MKDIR 5     /* make a directory */
        !            79: #define NI_RMDIR 6     /* remove a directory */
        !            80: 
        !            81: /* these have to be the same as in the client! (netb.h) */
        !            82: #define NETB 2
        !            83: /* commands */
        !            84: #define NBPUT  1
        !            85: #define NBGET  2
        !            86: #define NBUPD  3
        !            87: #define NBREAD 4
        !            88: #define NBWRT  5
        !            89: #define NBNAMI 6
        !            90: #define NBSTAT 7
        !            91: #define NBIOCTL        8
        !            92: #define NBTRNC 9
        !            93: /* response flags */
        !            94: #define NBROOT 1
        !            95: 
        !            96: /* delta time */
        !            97: extern int dtime;
        !            98: #ifndef NULL
        !            99: #define NULL 0
        !           100: #endif
        !           101: #ifndef ROOTINO
        !           102: #define ROOTINO 2
        !           103: #endif
        !           104: extern char *malloc(), *realloc();
        !           105: extern int proto;      /* values are 'd' for datakit and 't' for tcp */
        !           106: extern int clienttype; /* values are 's' for sun, 'c' for cray,
        !           107:                         * and 'v' for vax */
        !           108: 
        !           109: /* logic for deternining host type */
        !           110: #if !defined(vax) && !defined(sun) && !defined(cray) && !defined(ns32000)
        !           111: xx() { xx(host);}
        !           112: #endif
        !           113: #if !defined(cray)
        !           114: #define cray 0
        !           115: #endif

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