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| author | kientzle <kientzle@FreeBSD.org> | 2006-07-30 00:29:01 +0000 |
|---|---|---|
| committer | kientzle <kientzle@FreeBSD.org> | 2006-07-30 00:29:01 +0000 |
| commit | f501dbec5fe3a8ec80a115b83f7f07e2671bfc95 (patch) | |
| tree | 7a38c3d6e84fc5da7d1e72df478099c6b6a417f6 /lib/libarchive/archive_private.h | |
| parent | 61dd143cfb0a5bd3bf9dc7304f3f4126ae2e5acd (diff) | |
| download | FreeBSD-src-f501dbec5fe3a8ec80a115b83f7f07e2671bfc95.zip FreeBSD-src-f501dbec5fe3a8ec80a115b83f7f07e2671bfc95.tar.gz | |
Use 'skip' when ignoring data in tar archives. This dramatically
increases performance when extracting a single entry from a large
uncompressed archive, especially on slow devices such as USB hard
drives.
Requires a number of changes:
* New archive_read_open2() supports a 'skip' client function
* Old archive_read_open() is implemented as a wrapper now, to
continue supporting the old API/ABI.
* _read_open_fd and _read_open_file sprout new 'skip' functions.
* compression layer gets a new 'skip' operation.
* compression_none passes skip requests through to client.
* compression_{gzip,bzip2,compress} simply ignore skip requests.
Thanks to: Benjamin Lutz, who designed and implemented the whole thing.
I'm just committing it. ;-)
TODO: Need to update the documentation a little bit.
Diffstat (limited to 'lib/libarchive/archive_private.h')
| -rw-r--r-- | lib/libarchive/archive_private.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/libarchive/archive_private.h b/lib/libarchive/archive_private.h index 6b93820..419e0f7 100644 --- a/lib/libarchive/archive_private.h +++ b/lib/libarchive/archive_private.h @@ -68,6 +68,7 @@ struct archive { /* Callbacks to open/read/write/close archive stream. */ archive_open_callback *client_opener; archive_read_callback *client_reader; + archive_skip_callback *client_skipper; archive_write_callback *client_writer; archive_close_callback *client_closer; void *client_data; @@ -132,6 +133,7 @@ struct archive { ssize_t (*compression_read_ahead)(struct archive *, const void **, size_t request); ssize_t (*compression_read_consume)(struct archive *, size_t); + ssize_t (*compression_skip)(struct archive *, size_t); /* * Format detection is mostly the same as compression |
