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diff --git a/NEWS b/NEWS
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index 8aeae33..8f3c416 100644
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--- a/NEWS
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+++ b/NEWS
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@@ -1,10 +1,15 @@
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GNU tar NEWS - User visible changes. 2012-11-19
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Please send GNU tar bug reports to <bug-tar@gnu.org>
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+** Sparse files with large data
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+
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+When creating a PAX-format archive, tar no longer arbitrarily restricts
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+the size of the representation of a sparse file to be less than 8 GiB.
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+
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version 1.26 - Sergey Poznyakoff, 2011-03-12
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-* Bugfixes
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+* Bug fixes
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** Fix the --verify option, which broke in version 1.24.
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diff --git a/src/sparse.c b/src/sparse.c
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index 4b2f982..cfd0c66 100644
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--- a/src/sparse.c
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+++ b/src/sparse.c
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@@ -919,6 +919,18 @@ pax_sparse_member_p (struct tar_sparse_file *file)
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|| file->stat_info->sparse_major > 0;
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}
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+/* Start a header that uses the effective (shrunken) file size. */
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+static union block *
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+pax_start_header (struct tar_stat_info *st)
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+{
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+ off_t realsize = st->stat.st_size;
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+ union block *blk;
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+ st->stat.st_size = st->archive_file_size;
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+ blk = start_header (st);
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+ st->stat.st_size = realsize;
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+ return blk;
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+}
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+
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static bool
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pax_dump_header_0 (struct tar_sparse_file *file)
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{
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@@ -968,9 +980,7 @@ pax_dump_header_0 (struct tar_sparse_file *file)
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return false;
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}
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}
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- blk = start_header (file->stat_info);
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- /* Store the effective (shrunken) file size */
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- OFF_TO_CHARS (file->stat_info->archive_file_size, blk->header.size);
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+ blk = pax_start_header (file->stat_info);
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finish_header (file->stat_info, blk, block_ordinal);
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if (save_file_name)
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{
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@@ -1035,9 +1045,7 @@ pax_dump_header_1 (struct tar_sparse_file *file)
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if (strlen (file->stat_info->file_name) > NAME_FIELD_SIZE)
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file->stat_info->file_name[NAME_FIELD_SIZE] = 0;
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- blk = start_header (file->stat_info);
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- /* Store the effective (shrunken) file size */
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- OFF_TO_CHARS (file->stat_info->archive_file_size, blk->header.size);
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+ blk = pax_start_header (file->stat_info);
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finish_header (file->stat_info, blk, block_ordinal);
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free (file->stat_info->file_name);
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file->stat_info->file_name = save_file_name;
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