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    revision 815 by niro, Sat Sep 1 22:45:15 2007 UTC revision 816 by niro, Fri Apr 24 18:33:46 2009 UTC
    # Line 3  Line 3 
    3   * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.   * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
    4   */   */
    5    
     #include <stdlib.h>  
       
    6  #include "libbb.h"  #include "libbb.h"
    7  #include "unarchive.h"  #include "unarchive.h"
    8    
    9  char get_header_tar_gz(archive_handle_t *archive_handle)  char FAST_FUNC get_header_tar_gz(archive_handle_t *archive_handle)
    10  {  {
    11    #if BB_MMU
    12   unsigned char magic[2];   unsigned char magic[2];
    13    #endif
    14    
    15   /* Can't lseek over pipes */   /* Can't lseek over pipes */
    16   archive_handle->seek = seek_by_read;   archive_handle->seek = seek_by_read;
    17    
    18     /* Check gzip magic only if open_transformer will invoke unpack_gz_stream (MMU case).
    19     * Otherwise, it will invoke an external helper "gunzip -cf" (NOMMU case) which will
    20     * need the header. */
    21    #if BB_MMU
    22   xread(archive_handle->src_fd, &magic, 2);   xread(archive_handle->src_fd, &magic, 2);
    23     /* Can skip this check, but error message will be less clear */
    24   if ((magic[0] != 0x1f) || (magic[1] != 0x8b)) {   if ((magic[0] != 0x1f) || (magic[1] != 0x8b)) {
    25   bb_error_msg_and_die("invalid gzip magic");   bb_error_msg_and_die("invalid gzip magic");
    26   }   }
    27    #endif
    28    
    29   check_header_gzip(archive_handle->src_fd);   open_transformer(archive_handle->src_fd, unpack_gz_stream, "gunzip");
       
      archive_handle->src_fd = open_transformer(archive_handle->src_fd, inflate_gunzip);  
    30   archive_handle->offset = 0;   archive_handle->offset = 0;
    31   while (get_header_tar(archive_handle) == EXIT_SUCCESS) /**/;   while (get_header_tar(archive_handle) == EXIT_SUCCESS)
    32     continue;
    33    
    34   /* Can only do one file at a time */   /* Can only do one file at a time */
    35   return EXIT_FAILURE;   return EXIT_FAILURE;
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