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*: tar-related cleanups: move struct to unarchive.h; move help to tar.c

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
2010-06-26 18:21:36 +02:00
parent d0a8a0d312
commit 52827e3ebc
5 changed files with 118 additions and 153 deletions
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40
archival/libunarchive/get_header_tar.c
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@@ -118,34 +118,10 @@ static char *get_selinux_sctx_from_pax_hdr(archive_handle_t *archive_handle, uns
}
#endif
void BUG_tar_header_size(void);
char FAST_FUNC get_header_tar(archive_handle_t *archive_handle)
{
file_header_t *file_header = archive_handle->file_header;
struct {
/* ustar header, Posix 1003.1 */
char name[100]; /* 0-99 */
char mode[8]; /* 100-107 */
char uid[8]; /* 108-115 */
char gid[8]; /* 116-123 */
char size[12]; /* 124-135 */
char mtime[12]; /* 136-147 */
char chksum[8]; /* 148-155 */
char typeflag; /* 156-156 */
char linkname[100]; /* 157-256 */
/* POSIX: "ustar" NUL "00" */
/* GNU tar: "ustar " NUL */
/* Normally it's defined as magic[6] followed by
* version[2], but we put them together to simplify code
*/
char magic[8]; /* 257-264 */
char uname[32]; /* 265-296 */
char gname[32]; /* 297-328 */
char devmajor[8]; /* 329-336 */
char devminor[8]; /* 337-344 */
char prefix[155]; /* 345-499 */
char padding[12]; /* 500-512 */
} tar;
struct tar_header_t tar;
char *cp;
int i, sum_u, sum;
#if ENABLE_FEATURE_TAR_OLDSUN_COMPATIBILITY
@@ -162,9 +138,6 @@ char FAST_FUNC get_header_tar(archive_handle_t *archive_handle)
# define p_linkname 0
#endif
if (sizeof(tar) != 512)
BUG_tar_header_size();
#if ENABLE_FEATURE_TAR_GNU_EXTENSIONS || ENABLE_FEATURE_TAR_SELINUX
again:
#endif
@@ -230,18 +203,21 @@ char FAST_FUNC get_header_tar(archive_handle_t *archive_handle)
* we can switch to get_header_tar_gz/bz2/lzma().
* Needs seekable fd. I wish recv(MSG_PEEK) works
* on any fd... */
#if ENABLE_FEATURE_SEAMLESS_GZ
# if ENABLE_FEATURE_SEAMLESS_GZ
if (tar.name[0] == 0x1f && tar.name[1] == (char)0x8b) { /* gzip */
get_header_ptr = get_header_tar_gz;
} else
#endif
#if ENABLE_FEATURE_SEAMLESS_BZ2
# endif
# if ENABLE_FEATURE_SEAMLESS_BZ2
if (tar.name[0] == 'B' && tar.name[1] == 'Z'
&& tar.name[2] == 'h' && isdigit(tar.name[3])
) { /* bzip2 */
get_header_ptr = get_header_tar_bz2;
} else
#endif
# endif
# if ENABLE_FEATURE_SEAMLESS_XZ
//TODO
# endif
goto err;
/* Two different causes for lseek() != 0:
* unseekable fd (would like to support that too, but...),