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Annotation of researchv10no/cmd/odist/tar/tar.h, revision 1.1.1.1

1.1       root        1: struct tarbuf {
                      2:        char name[100];         /* strncpy format */
                      3:        char mode[8];           /* octal NUL-terminated */
                      4:        char uid[8];            /* octal */
                      5:        char gid[8];            /* octal */
                      6:        char size[12];          /* octal */
                      7:        char mtime[12];         /* octal */
                      8:        char chksum[8];         /* octal sum of header bytes; set to
                      9:                                   blanks while computing chksum */
                     10:        char typeflag[1];       /* see below */
                     11:        char linkname[100];     /* strncpy */
                     12:        char magic[6];          /* see below */
                     13:        char version[2];        /* see below */
                     14:        char uname[32];         /* strcpy format */
                     15:        char gname[32];         /* strcpy */
                     16:        char devmajor[8];       /* octal */
                     17:        char devminor[8];       /* octal */
                     18:        char prefix[155];       /* strncpy */
                     19:        char zeropad[12];
                     20: };
                     21: 
                     22: #define TSIZE (sizeof (struct tarbuf))
                     23: 
                     24: #define TMAGIC "ustar"         /* ustar\0 */
                     25: #define TMAGLEN 6
                     26: #define TVERSION "00"          /* strncpy, n == 2 */
                     27: #define TVERSLEN 2
                     28: 
                     29: /* typeflag values */
                     30: #define AREGTYPE '\0'          /* historical regular file */
                     31: #define REGTYPE '0'            /* regular file */
                     32: #define LNKTYPE '1'            /* hard link */
                     33: #define SYMTYPE '2'            /* reserved (symbolic link) */
                     34: #define CHRTYPE '3'            /* character special */
                     35: #define BLKTYPE '4'            /* block special */
                     36: #define DIRTYPE '5'            /* directory */
                     37: #define FIFOTYPE '6'           /* fifo special */
                     38: #define CONTTYPE '7'           /* reserved (socket?) */
                     39: 
                     40: /* mode bits */
                     41: #define TSUID 04000            /* set user id on execution */
                     42: #define TSGID 02000            /* set group id on execution */
                     43: #define TSVTX 01000            /* reserved */
                     44: #define TUREAD 00400           /* read by owner */
                     45: #define TUWRITE 00200          /* write by owner */
                     46: #define TUEXEC 00100           /* exec/search by owner */
                     47: #define TGREAD 00040           /* read by group */
                     48: #define TGWRITE 00020          /* write by group */
                     49: #define TGEXEC 00010           /* exec/search by group */
                     50: #define TOREAD 00004           /* read by other */
                     51: #define TOWRITE 00002          /* write by other */
                     52: #define TOEXEC 00001           /* exec/search by other */
                     53: #define TMASK 07777            /* mask of all bits (not in POSIX) */
                     54: 
                     55: #define TNAMEMAX 256
                     56: #define TLINKMAX 100
                     57: #define TUGNAMEMAX 31
                     58: 
                     59: /* incore equivalent of a tar buffer */
                     60: struct tarhdr {
                     61:        char name[TNAMEMAX + 1];
                     62:        int mode;
                     63:        int uid;
                     64:        int gid;
                     65:        long size;
                     66:        time_t mtime;
                     67:        char typeflag;
                     68:        char linkname[TLINKMAX + 1];
                     69:        char uname[TUGNAMEMAX + 1];
                     70:        char gname[TUGNAMEMAX + 1];
                     71:        int devmajor;
                     72:        int devminor;
                     73: };
                     74: 
                     75: extern int thdrget(struct tarhdr *hdr, struct tarbuf *buf);
                     76: extern int thdrput(struct tarbuf *buf, struct tarhdr *hdr);
                     77: 
                     78: /* stuff the user needs to provide */
                     79: extern int gidnum(char *);
                     80: extern char *gidstr(int);
                     81: extern int uidnum(char *);
                     82: extern char *uidstr(int);

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