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author | kientzle <kientzle@FreeBSD.org> | 2007-10-24 04:01:31 +0000 |
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committer | kientzle <kientzle@FreeBSD.org> | 2007-10-24 04:01:31 +0000 |
commit | 9bc0f4c6a443721979818bca4ed522cc2dcb24f3 (patch) | |
tree | ba01a085d3a3ef352e66b78f332e2c5578188226 /lib/libarchive/archive_read_support_format_tar.c | |
parent | 2b44eb1afe7b7a4139e16f9faf1a0937db4de771 (diff) | |
download | FreeBSD-src-9bc0f4c6a443721979818bca4ed522cc2dcb24f3.zip FreeBSD-src-9bc0f4c6a443721979818bca4ed522cc2dcb24f3.tar.gz |
Fix reading of files that use pax 'size' attribute to store size.
In particular, bsdtar uses the pax 'size' attribute for any file
over 8G.
MFC after: 3 days
Diffstat (limited to 'lib/libarchive/archive_read_support_format_tar.c')
-rw-r--r-- | lib/libarchive/archive_read_support_format_tar.c | 28 |
1 files changed, 21 insertions, 7 deletions
diff --git a/lib/libarchive/archive_read_support_format_tar.c b/lib/libarchive/archive_read_support_format_tar.c index 9d2aef0..72d2e85 100644 --- a/lib/libarchive/archive_read_support_format_tar.c +++ b/lib/libarchive/archive_read_support_format_tar.c @@ -164,6 +164,7 @@ struct tar { struct sparse_block *sparse_last; int64_t sparse_offset; int64_t sparse_numbytes; + int64_t sparse_realsize; int sparse_gnu_major; int sparse_gnu_minor; char sparse_gnu_pending; @@ -440,6 +441,7 @@ archive_read_format_tar_read_header(struct archive_read *a, free(sp); } tar->sparse_last = NULL; + tar->sparse_realsize = -1; /* Mark this as "unset" */ r = tar_read_header(a, tar, entry); @@ -1388,9 +1390,10 @@ pax_attribute(struct tar *tar, struct archive_entry *entry, } if (wcscmp(key, L"GNU.sparse.name") == 0) archive_entry_copy_pathname_w(entry, value); - if (wcscmp(key, L"GNU.sparse.realsize") == 0) - archive_entry_set_size(entry, - tar_atol10(value, wcslen(value))); + if (wcscmp(key, L"GNU.sparse.realsize") == 0) { + tar->sparse_realsize = tar_atol10(value, wcslen(value)); + archive_entry_set_size(entry, tar->sparse_realsize); + } break; case 'L': /* Our extensions */ @@ -1471,11 +1474,22 @@ pax_attribute(struct tar *tar, struct archive_entry *entry, /* POSIX has reserved 'security.*' */ /* Someday: if (wcscmp(key, L"security.acl")==0) { ... } */ if (wcscmp(key, L"size")==0) { - tar->entry_bytes_remaining = tar_atol10(value, wcslen(value)); - archive_entry_set_size(entry, tar->entry_bytes_remaining); + /* "size" is the size of the data in the entry. */ + tar->entry_bytes_remaining + = tar_atol10(value, wcslen(value)); + /* + * But, "size" is not necessarily the size of + * the file on disk; if this is a sparse file, + * the disk size may have already been set from + * GNU.sparse.realsize. + */ + if (tar->sparse_realsize < 0) { + archive_entry_set_size(entry, + tar->entry_bytes_remaining); + tar->sparse_realsize + = tar->entry_bytes_remaining; + } } - tar->entry_bytes_remaining = 0; - break; case 'u': if (wcscmp(key, L"uid")==0) |