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Annotation of researchv10no/netfs/libnetb/rf.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * remote file access library
        !             3:  * for building file system daemons
        !             4:  */
        !             5: 
        !             6: typedef struct {
        !             7:        char *fs;       /* fs-specific local data */
        !             8:        long ino;
        !             9:        char dev;
        !            10:        char type;      /* directory or regular */
        !            11:        short mode;
        !            12:        short nlink;
        !            13:        short uid, gid;
        !            14:        short rdev;     /* is this useful? */
        !            15:        long size;
        !            16:        long ta;
        !            17:        long tm;
        !            18:        long tc;
        !            19: } Rfile;
        !            20: 
        !            21: extern int fserrno;
        !            22: extern int rfdebug;
        !            23: extern char *rfclient;
        !            24: 
        !            25: /*
        !            26:  * service routines
        !            27:  * provided by the user,
        !            28:  * but this is what they should look like
        !            29:  */
        !            30: Rfile *fsinit();       /* (int argc, char **argv) */
        !            31: Rfile *fswalk();       /* (Rfile *dir, char *name) */
        !            32: Rfile *fscreate();     /* (Rfile *dir, char *newname, int mode, uid, gid) */
        !            33: int fsdelete();                /* (Rfile *dir, char *name) */
        !            34: int fslink();          /* (Rfile *dir, char *newname, Rfile *ofile) */
        !            35: int fsmkdir();         /* (Rfile *dir, char *name) */
        !            36: int fsrmdir();         /* (Rfile *dir, char *name, int mode, uid, gid) */
        !            37: int fsdone();          /* (Rfile *f) -- discard this Rfile */
        !            38: int fsstat();          /* (Rfile *f) -- fill it in with stat info */
        !            39: int fsread();          /* (Rfile *f, long off, char *buf, int len) */
        !            40: int fswrite();         /* (Rfile *f, long off, char *buf, int len) */
        !            41: int fsdirread();       /* (Rfile *f, long off, char *buf, int len, long *newoff) */
        !            42: int fsupdate();                /* (Rfile *f, Rfile *attr) -- copy attributes from attr */
        !            43:                        /* mode, size, uid, gid, ta, tm */
        !            44: 
        !            45: /*
        !            46:  * permission mapping
        !            47:  */
        !            48: 
        !            49: /*
        !            50:  * local name to local ID mapping
        !            51:  */
        !            52: typedef struct {
        !            53:        char name[9];
        !            54:        short id;
        !            55: } Idmap;
        !            56: 
        !            57: /*
        !            58:  * local name to remote name mapping;
        !            59:  * used only for exception list
        !            60:  */
        !            61: typedef struct {
        !            62:        char sname[9];
        !            63:        char cname[9];
        !            64:        int sid;
        !            65: } Namemap;
        !            66: 
        !            67: Idmap *rfmkidmap();    /* (char *filename, Namemap *exlist) */
        !            68: extern Idmap *rfuidmap, *rfgidmap;
        !            69: extern int rfuid, rfgid;
        !            70: extern int rfotherdeny;
        !            71: 
        !            72: #define        RFNOID  (-1)    /* unmapped user- or group-id */
        !            73: 
        !            74: /*
        !            75:  * file modes
        !            76:  * these correspond to V7 Unix
        !            77:  * only the low nine bits (permissions) are used by the library
        !            78:  * other bits will be passed literally to the client
        !            79:  * if it expects unix-like modes
        !            80:  */
        !            81: #define        RFPRD   04              /* read permission */
        !            82: #define        RFPWR   02              /* write permission */
        !            83: #define        RFPEX   01              /* execute permission */
        !            84: #define        RFPDS   RFPEX           /* directory search permission */
        !            85: 
        !            86: #define        RFPOTHER        0       /* shift to make `other' permissions */
        !            87: #define        RFPGROUP        3       /* shift to make `group' permissions */
        !            88: #define        RFPOWNER        6       /* shift to make `owner' permissions */
        !            89: 
        !            90: /*
        !            91:  * file types
        !            92:  * other types are just not allowed for now
        !            93:  * (but some protocols may sneak them through in the mode)
        !            94:  */
        !            95: #define        RFTREG  0       /* regular file */
        !            96: #define        RFTDIR  1       /* directory */
        !            97: 
        !            98: /*
        !            99:  * error codes in fserrno
        !           100:  * these intentionally match Unix errno values,
        !           101:  * and in fact errno values will usually do,
        !           102:  * but the library doesn't promise to preserve
        !           103:  * exact values that aren't here
        !           104:  */
        !           105: 
        !           106: #define        RFEOWNER        1       /* not file owner */
        !           107: #define        RFENOENT        2       /* no such file or directory */
        !           108: #define        RFEIO           5       /* general I/O error */
        !           109: #define        RFENXIO         6       /* no such file address */
        !           110: #define        RFEACCES        13      /* no permission */
        !           111: #define        RFEBUSY         16      /* something is in use and can't be used again */
        !           112: #define        RFEEXIST        17      /* file exists when it shouldn't */
        !           113: #define        RFEXDEV         18      /* link across devices (or just not allowed) */
        !           114: #define        RFENOTDIR       20      /* not a directory and should be */
        !           115: #define        RFEISDIR        21      /* is a directory and shouldn't be */
        !           116: #define        RFEINVAL        22      /* invalid arg or function; catchall for internal errors */
        !           117: #define        RFENOSPC        28      /* no space on disk or in buffer (dirread) */

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