150 lines
3.9 KiB
C
150 lines
3.9 KiB
C
#ifndef _HIO_TAR_H_
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#define _HIO_TAR_H_
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#include <hio.h>
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#include <hio-ecs.h>
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/* tar Header Block, from POSIX 1003.1-1990. */
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struct hio_tar_hdr_t
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{ /* byte offset */
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char name[100]; /* 0 */
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char mode[8]; /* 100 */
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char uid[8]; /* 108 */
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char gid[8]; /* 116 */
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char size[12]; /* 124 - file size in an ascii octal string */
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char mtime[12]; /* 136 */
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char chksum[8]; /* 148 */
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char typeflag; /* 156 */
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char linkname[100]; /* 157 */
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char magic[6]; /* 257 - ustar indicator */
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char version[2]; /* 263 - ustar version */
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char uname[32]; /* 265 */
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char gname[32]; /* 297 */
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char devmajor[8]; /* 329 */
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char devminor[8]; /* 337 */
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char prefix[155]; /* 345 */
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char padding[12]; /* 500 */
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#if 0
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char *gnu_longname;
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char *gnu_longlink;
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#endif
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};
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typedef struct hio_tar_hdr_t hio_tar_hdr_t;
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#define HIO_TAR_MAGIC "ustar" /* ustar and a null */
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#define HIO_TAR_MAGLEN 6
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#define HIO_TAR_VERSION "00" /* 00 and no null */
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#define HIO_TAR_VERSLEN 2
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/* Values used in typeflag field. */
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#define HIO_TAR_REGTYPE '0' /* regular file */
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#define HIO_TAR_AREGTYPE '\0' /* regular file */
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#define HIO_TAR_LNKTYPE '1' /* link */
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#define HIO_TAR_SYMTYPE '2' /* reserved */
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#define HIO_TAR_CHRTYPE '3' /* character special */
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#define HIO_TAR_BLKTYPE '4' /* block special */
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#define HIO_TAR_DIRTYPE '5' /* directory */
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#define HIO_TAR_FIFOTYPE '6' /* FIFO special */
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#define HIO_TAR_CONTTYPE '7' /* reserved */
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#define HIO_TAR_XHDTYPE 'x' /* Extended header referring to the next file in the archive */
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#define HIO_TAR_XGLTYPE 'g' /* Global extended header */
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/* Bits used in the mode field, values in octal. */
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#define HIO_TAR_SUID 04000 /* set UID on execution */
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#define HIO_TAR_SGID 02000 /* set GID on execution */
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#define HIO_TAR_SVTX 01000 /* reserved */
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/* file permissions */
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#define HIO_TAR_UREAD 00400 /* read by owner */
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#define HIO_TAR_UWRITE 00200 /* write by owner */
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#define HIO_TAR_UEXEC 00100 /* execute/search by owner */
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#define HIO_TAR_GREAD 00040 /* read by group */
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#define HIO_TAR_GWRITE 00020 /* write by group */
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#define HIO_TAR_GEXEC 00010 /* execute/search by group */
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#define HIO_TAR_OREAD 00004 /* read by other */
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#define HIO_TAR_OWRITE 00002 /* write by other */
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#define HIO_TAR_OEXEC 00001 /* execute/search by other */
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#define HIO_TAR_BLKSIZE (512)
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enum hio_tar_state_t
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{
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HIO_TAR_STATE_START,
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HIO_TAR_STATE_FILE,
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HIO_TAR_STATE_END
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};
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typedef enum hio_tar_state_t hio_tar_state_t;
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struct hio_tar_t
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{
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hio_t* hio;
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struct
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{
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hio_bch_t root[2048];
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hio_tar_state_t state;
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struct
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{
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hio_uint8_t buf[HIO_TAR_BLKSIZE];
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hio_oow_t len;
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} blk;
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struct
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{
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hio_uintmax_t devmajor;
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hio_uintmax_t devminor;
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hio_uintmax_t filesize;
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hio_uintmax_t filemode;
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hio_becs_t filename;
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void* fp;
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} hi;
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} x; /* extract */
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};
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typedef struct hio_tar_t hio_tar_t;
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#if defined(__cplusplus)
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extern "C" {
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#endif
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HIO_EXPORT hio_tar_t* hio_tar_open (
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hio_t* hio,
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hio_oow_t xtnsize
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);
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HIO_EXPORT void hio_tar_close (
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hio_tar_t* tar
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);
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HIO_EXPORT int hio_tar_init (
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hio_tar_t* tar,
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hio_t* hio
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);
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HIO_EXPORT void hio_tar_fini (
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hio_tar_t* tar
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);
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#define hio_tar_endxfeed(tar) hio_tar_xfeed(tar, HIO_NULL, 0)
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HIO_EXPORT int hio_tar_xfeed (
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hio_tar_t* tar,
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const void* ptr,
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hio_oow_t len
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);
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HIO_EXPORT void hio_tar_setxrootwithbcstr (
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hio_tar_t* tar,
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const hio_bch_t* root
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);
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#if defined(__cplusplus)
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}
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#endif
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#endif
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