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Annotation of researchv10dc/630/3binc/ldfcn.h, revision 1.1

1.1     ! root        1: #ident "@(#)/usr/include/ldfcn.h.sl 1.2 4.1 09/02/86 39906 AT&T-SF"
        !             2: 
        !             3: #ifndef LDFILE
        !             4: struct ldfile {
        !             5:        int     _fnum_;         /* so each instance of an LDFILE is unique */
        !             6:        FILE    *ioptr;         /* system I/O pointer value */
        !             7:        long    offset;         /* absolute offset to the start of the file */
        !             8:        FILHDR  header;         /* the file header of the opened file */
        !             9:        unsigned short  type;           /* indicator of the type of the file */
        !            10: };
        !            11: 
        !            12: 
        !            13: /*
        !            14:        provide a structure "type" definition, and the associated
        !            15:        "attributes"
        !            16: */
        !            17: 
        !            18: #define        LDFILE          struct ldfile
        !            19: #define IOPTR(x)       x->ioptr
        !            20: #define OFFSET(x)      x->offset
        !            21: #define TYPE(x)                x->type
        !            22: #define        HEADER(x)       x->header
        !            23: #define LDFSZ          sizeof(LDFILE)
        !            24: 
        !            25: /*
        !            26:        define various values of TYPE(ldptr)
        !            27: */
        !            28: 
        !            29: #define ARTYPE         0177545
        !            30: 
        !            31: /*
        !            32:        define symbolic positioning information for FSEEK (and fseek)
        !            33: */
        !            34: 
        !            35: #define BEGINNING      0
        !            36: #define CURRENT                1
        !            37: #define END            2
        !            38: 
        !            39: /*
        !            40:        define a structure "type" for an archive header
        !            41: */
        !            42: 
        !            43: typedef struct
        !            44: {
        !            45:        char ar_name[16];
        !            46:        long ar_date;
        !            47:        int ar_uid;
        !            48:        int ar_gid;
        !            49:        long ar_mode;
        !            50:        long ar_size;
        !            51: } archdr;
        !            52: 
        !            53: #define        ARCHDR  archdr
        !            54: #define ARCHSZ sizeof(ARCHDR)
        !            55: 
        !            56: 
        !            57: /*
        !            58:        define some useful symbolic constants
        !            59: */
        !            60: 
        !            61: #define SYMTBL 0       /* section nnumber and/or section name of the Symbol Table */
        !            62: 
        !            63: #define        SUCCESS  1
        !            64: #define        CLOSED   1
        !            65: #define        FAILURE  0
        !            66: #define        NOCLOSE  0
        !            67: #define        BADINDEX        -1L
        !            68: 
        !            69: #define        OKFSEEK 0
        !            70: 
        !            71: /*
        !            72:        define macros to permit the direct use of LDFILE pointers with the
        !            73:        standard I/O library procedures
        !            74: */
        !            75: 
        !            76: LDFILE *ldopen();
        !            77: LDFILE *ldaopen();
        !            78: 
        !            79: #define GETC(ldptr)    getc(IOPTR(ldptr))
        !            80: #define GETW(ldptr)    getw(IOPTR(ldptr))
        !            81: #define FEOF(ldptr)    feof(IOPTR(ldptr))
        !            82: #define FERROR(ldptr)  ferror(IOPTR(ldptr))
        !            83: #define FGETC(ldptr)   fgetc(IOPTR(ldptr))
        !            84: #define FGETS(s,n,ldptr)       fgets(s,n,IOPTR(ldptr))
        !            85: #define FILENO(ldptr)  fileno(IOPTR(ldptr))
        !            86: #define FREAD(p,s,n,ldptr)     fread(p,s,n,IOPTR(ldptr))
        !            87: #define FSEEK(ldptr,o,p)       fseek(IOPTR(ldptr),(p==BEGINNING)?(OFFSET(ldptr)+o):o,p)
        !            88: #define FTELL(ldptr)   ftell(IOPTR(ldptr))
        !            89: #define FWRITE(p,s,n,ldptr)       fwrite(p,s,n,IOPTR(ldptr))
        !            90: #define REWIND(ldptr)  rewind(IOPTR(ldptr))
        !            91: #define SETBUF(ldptr,b)        setbuf(IOPTR(ldptr),b)
        !            92: #define UNGETC(c,ldptr)                ungetc(c,IOPTR(ldptr))
        !            93: #define STROFFSET(ldptr)       (HEADER(ldptr).f_symptr + HEADER(ldptr).f_nsyms * 18) /* 18 == SYMESZ */
        !            94: #endif

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