17 messages in org.freebsd.freebsd-archAdding bsdiff to the base system| From | Sent On | Attachments |
|---|---|---|
| Colin Percival | Mar 30, 2005 3:47 pm | |
| Ceri Davies | Mar 31, 2005 2:16 am | |
| Alexey Dokuchaev | Mar 31, 2005 2:24 am | |
| Colin Percival | Mar 31, 2005 2:33 am | |
| Colin Percival | Mar 31, 2005 2:47 am | |
| Robert Watson | Mar 31, 2005 9:06 pm | |
| Mario Hoerich | Apr 1, 2005 5:43 am | |
| Dan Nelson | Apr 1, 2005 7:27 am | |
| Garance A Drosihn | Apr 1, 2005 12:16 pm | |
| Alex Burke | Apr 1, 2005 1:18 pm | |
| Colin Percival | Apr 1, 2005 2:12 pm | |
| Max Laier | Apr 1, 2005 3:26 pm | |
| John Baldwin | Apr 2, 2005 12:15 pm | |
| Ceri Davies | Apr 4, 2005 8:45 am | |
| Olaf Wagner | Apr 6, 2005 11:49 pm | |
| Colin Percival | Apr 7, 2005 12:35 am | |
| John Polstra | Apr 8, 2005 8:11 am |
| Subject: | Adding bsdiff to the base system | |
|---|---|---|
| From: | Colin Percival (coli...@wadham.ox.ac.uk) | |
| Date: | Mar 31, 2005 2:33:57 am | |
| List: | org.freebsd.freebsd-arch | |
Ceri Davies wrote:
On Wed, Mar 30, 2005 at 03:47:55PM -0800, Colin Percival wrote:
I'd like to add bsdiff/bspatch into the base system.
While it's probably easy to guess from the names, can you explain what they are?
Oops. bsdiff constructs a "binary diff", and is designed to produce particularly small patches when the two files differ by a large number of substitutions relative to the number of insertions and deletions (this is significant since executable files tend to change in this manner, as a result of linking object files together). Compared to other "binary diff" tools, bsdiff often produces patches 3-5 times smaller; however, it has the disadvantage of being slower and rather more memory-intensive than other tools.
bspatch is the opposite of bsdiff -- it takes the "old" file, the binary diff file, and produces the "new" file.
Colin Percival