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path: root/lib/libalpm/delta.c
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2018-05-14Remove all modelines from the projectEli Schwartz
Many of these are pointless (e.g. there is no need to explicitly turn on spellchecking and language dictionaries for the manpages by default). The only useful modelines are the ones enforcing the project coding standards for indentation style (and "maybe" filetype/syntax, but everything except the asciidoc manpages and makepkg.conf is already autodetected), and indent style can be applied more easily with .editorconfig Signed-off-by: Eli Schwartz <eschwartz@archlinux.org> Signed-off-by: Allan McRae <allan@archlinux.org>
2018-03-14Update coyrights for 2018Allan McRae
make update-copyright OLD=2017 NEW=201 Signed-off-by: Allan McRae <allan@archlinux.org>
2017-07-28Fix brace coding style issuesMichael Straube
- Add missing braces to one-line if blocks - Move opening brace to line end Signed-off-by: Michael Straube <straubem@gmx.de>
2017-04-16graph.h: rename childptr -> iteratorAndrew Gregory
Signed-off-by: Andrew Gregory <andrew.gregory.8@gmail.com>
2017-04-16graph.h: replace hardcoded values with an enumAndrew Gregory
Signed-off-by: Andrew Gregory <andrew.gregory.8@gmail.com>
2017-01-04Update copyright yearsAllan McRae
Signed-off-by: Allan McRae <allan@archlinux.org>
2016-01-04Update copyright years for 2016Allan McRae
make update-copyright OLD=2015 NEW=2016 Signed-off-by: Allan McRae <allan@archlinux.org>
2015-10-27Alpm, check for NULL in free-functionsRikard Falkeborn
Also, use FREE() instead of free() in _alpm_backup_free() to set the pointers to NULL. Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com> Signed-off-by: Allan McRae <allan@archlinux.org>
2015-02-01Update copyright notices for 2015Allan McRae
Signed-off-by: Allan McRae <allan@archlinux.org>
2014-12-24_alpm_delta_parse: free memory on errorAllan McRae
Signed-off-by: Allan McRae <allan@archlinux.org>
2014-12-24_alpm_delta_dup: free memory on errorAllan McRae
Signed-off-by: Allan McRae <allan@archlinux.org>
2014-01-28Remove ts and sw from vim modeline when noet is setFlorian Pritz
Forcing vim users to view files with a tabstop of 2 seems really unnecessary when noet is set. I find it much easier to read code with ts=4 and I dislike having to override the modeline by hand. Command run: find . -type f -exec sed -i '/vim.* noet/s# ts=2 sw=2##' {} + Signed-off-by: Florian Pritz <bluewind@xinu.at> Signed-off-by: Allan McRae <allan@archlinux.org>
2014-01-06Update copyright years for 2014Allan McRae
Signed-off-by: Allan McRae <allan@archlinux.org>
2013-01-03Use a defined constant in delta.c for num_matchesDan McGee
This allows compiling in both clang and gcc without running into oddities regarding const vs. defined constant values. Signed-off-by: Dan McGee <dan@archlinux.org>
2013-01-03Update copyright year for 2013Allan McRae
Signed-off-by: Allan McRae <allan@archlinux.org>
2012-02-20Update copyright yearsAllan McRae
Add 2012 to the copyright range for all libalpm and pacman source files. Signed-off-by: Allan McRae <allan@archlinux.org> Signed-off-by: Dan McGee <dan@archlinux.org>
2012-01-18Allow UseDelta option to specify a delta ratioDan McGee
Rework the frontend and backend to allow passing a ratio value in for UseDelta rather than having a hardcoded #define-d 0.7 value always used. This is useful for those with fast connections, who would likely benefit from tuning this ratio to lower values; it is also useful for general testing purposes. The libalpm API changes for this, but we do support the old config file format with a no-value 'UseDelta' option; in this case we simply use the old default of 0.7. We clamp the ratio values to a sane range between 0.0 and 2.0, allowing ratios above 1.0 for testing purposes. Signed-off-by: Dan McGee <dan@archlinux.org>
2012-01-02Only compile delta regex onceDan McGee
This reduces the number of regcomp() calls when parsing delta entries in the database from once per entry to once for the entire context handle by storing the compiled regex data on the handle itself. Just as we do with the cURL handle, we initialize it the first time it is needed and free it when releasing the handle. A few other small tweaks to the parsing function also take place, including using the stack to store the transient and short file size string while parsing it. When parsing a sync database with 1378 delta entries, this reduces the time of a `pacman -Sl deltas` operation by 50% from 0.22s to 0.12s. Signed-off-by: Dan McGee <dan@archlinux.org>
2011-12-31Fix delta parsingDan McGee
In commit 4c5e7af32f9, we changed this code to use the regex gathered substrings. However, we failed to correctly store the delta file name (leaking memory), as well as freeing the temporary string used to hold the file size string. Signed-off-by: Dan McGee <dan@archlinux.org>
2011-12-21include config.h via MakefilesDave Reisner
Ensures that config.h is always ordered correctly (first) in the includes. Also means that new source files get this for free without having to remember to add it. We opt for -imacros over -include as its more portable, and the added constraint by -imacros doesn't bother us for config.h. This also touches the HACKING file to remove the explicit mention of config.h as part of the includes. Signed-off-by: Dave Reisner <dreisner@archlinux.org> Signed-off-by: Dan McGee <dan@archlinux.org>
2011-12-13delta: use regex substring matchingDave Reisner
Signed-off-by: Dave Reisner <dreisner@archlinux.org> Signed-off-by: Dan McGee <dan@archlinux.org>
2011-09-11account for partial delta files in download sizeDave Reisner
Similar to an earlier commit which accounts for .part files for full packages, calculate the download_size for deltas keeping mind the possibility of a partial transfer. Signed-off-by: Dave Reisner <dreisner@archlinux.org> Signed-off-by: Dan McGee <dan@archlinux.org>
2011-09-02More package operations cleanupDan McGee
Neither deltas nor filename attributes are ever present in the local database, so we can remove all of the indirection for accessing these attributes. Signed-off-by: Dan McGee <dan@archlinux.org>
2011-09-02Clean up handling of size fieldsDan McGee
We currently have csize, isize, and size concepts, and sometimes the difference isn't clear. Ensure the following holds: * size (aka csize): always the compressed size of the package; available for everything except local packages (where it will return 0) * isize: always the installed size of the package; available for all three package types Signed-off-by: Dan McGee <dan@archlinux.org>
2011-08-29Parse > 2GiB file sizes correctlyDan McGee
We were using atol(), which on 32 bit, cannot handle values greater than 2GiB, which is fail. Switch to a strtoull() wrapper function tailored toward parsing off_t values. This allows parsing of very large positive integer values. off_t is a signed type, but in our usages, we never parse or have a need for negative values, so the function will return -1 on error. Before: $ pacman -Si flightgear-data | grep Size Download Size : 2097152.00 K Installed Size : 2097152.00 K After: $ ./src/pacman/pacman -Si flightgear-data | grep Size Download Size : 2312592.52 KiB Installed Size : 5402896.00 KiB Signed-off-by: Dan McGee <dan@archlinux.org>
2011-07-02Prefix alpm_loglevel_t members with ALPMAllan McRae
Signed-off-by: Allan McRae <allan@archlinux.org>
2011-06-28Rename pmgraph_t to alpm_graph_tAllan McRae
Signed-off-by: Allan McRae <allan@archlinux.org>
2011-06-28Rename pmdelta_t to alpm_delta_tAllan McRae
Signed-off-by: Allan McRae <allan@archlinux.org>
2011-06-28Rename pmpkg_t to alpm_pkg_tAllan McRae
Signed-off-by: Allan McRae <allan@archlinux.org>
2011-06-28Rename pmhandle_t to alpm_handle_tAllan McRae
Signed-off-by: Allan McRae <allan@archlinux.org>
2011-06-20Correctly duplicate delta objectsDan McGee
We were using copy_data before; this works for the struct itself but not the strings contained within. Fix it up by duplicating all the data as we do with our other structures. Signed-off-by: Dan McGee <dan@archlinux.org>
2011-06-16Make pmdelta_t publicDan McGee
Signed-off-by: Dan McGee <dan@archlinux.org>
2011-06-13Switch all logging to use handle directlyDan McGee
This is the last user of our global handle object. Once again the diff is large but the functional changes are not. Signed-off-by: Dan McGee <dan@archlinux.org>
2011-06-13Move pm_errno onto the handleDan McGee
This involves some serious changes and a very messy diff, unfortunately. Signed-off-by: Dan McGee <dan@archlinux.org>
2011-06-09Require handle argument to all alpm_option_(get|set)_*() methodsDan McGee
This requires a lot of line changes, but not many functional changes as more often than not our handle variable is already available in some fashion. Signed-off-by: Dan McGee <dan@archlinux.org>
2011-06-03Remove ALPM_LOG_FUNC macroDan McGee
The usefulness of this is rather limited due to it not being compiled into production builds. When you do choose to see the output, it is often overwhelming and not helpful. The best bet is to use a debugger and/or well-placed fprintf() statements. Signed-off-by: Dan McGee <dan@archlinux.org>
2011-03-20Style change: return(x) --> return xDan McGee
This was discussed and more or less agreed upon on the mailing list. A huge checkin, but if we just do it and let people adjust the pain will end soon enough. Rebasing should be relatively straighforward for anyone that sees conflicts; just be sure you use the new return style if possible. The following semantic patch was used to do the change, along with some hand-massaging in order to preserve parenthesis where appropriate: The semantic match that finds this problem is as follows, although some hand-massaging was done in order to keep parenthesis where appropriate: (http://coccinelle.lip6.fr/) // <smpl> @@ expression a; @@ - return(a); + return a; // </smpl> A macros_file was also provided with the following content: Additional steps taken, mainly for ASSERT() macros: $ sed -i -e 's#return(NULL)#return NULL#' lib/libalpm/*.c $ sed -i -e 's#return(-1)#return -1#' lib/libalpm/*.c Signed-off-by: Dan McGee <dan@archlinux.org>
2011-01-07Update copyright years for 2011Allan McRae
Signed-off-by: Allan McRae <allan@archlinux.org> Signed-off-by: Dan McGee <dan@archlinux.org>
2010-03-25More consistent printing of off_t and time_tXavier Chantry
time_t : %ld off_t : %jd and cast to intmax_t Signed-off-by: Xavier Chantry <shiningxc@gmail.com> Signed-off-by: Dan McGee <dan@archlinux.org>
2010-03-14Bump copyright dates to 2010Dan McGee
Signed-off-by: Dan McGee <dan@archlinux.org>
2010-03-14delta : add external cleanup scriptXavier Chantry
Signed-off-by: Xavier Chantry <shiningxc@gmail.com> Signed-off-by: Dan McGee <dan@archlinux.org>
2009-09-20delta : simple code refactoringXavier Chantry
This will make the code re-usable for other purpose. Signed-off-by: Xavier Chantry <shiningxc@gmail.com> Signed-off-by: Dan McGee <dan@archlinux.org>
2009-07-01Update copyright headers and messagesDan McGee
Signed-off-by: Dan McGee <dan@archlinux.org>
2009-03-15Fix several issues with xdeltaXavier Chantry
1) The changes to sync.c look big but there are mostly caused by the indentation. Fix a bug where download_size == 0 because the packages and deltas are already in the cache, but we still need to build the deltas list and apply the deltas to create the final package. 2) Fix the gzip / md5sum issue by switching to xdelta3, disabling external recompression and using gzip -n in pacman, and disable bsdtar compression and using gzip -n in makepkg. Signed-off-by: Xavier Chantry <shiningxc@gmail.com>
2009-02-28libalpm: remove from_md5 and to_md5 from pmdelta_tXavier Chantry
The from_md5 and to_md5 fields were a nice extra safety, which would avoid trying to apply deltas on corrupted package files. However, they are not strictly necessary, since xdelta should be able to detect that on its own. The main problem is that it is impossible to compute these informations from the delta only. So repo-add would not be able to compute the delta entry based on just the delta file. Signed-off-by: Xavier Chantry <shiningxc@gmail.com> Signed-off-by: Dan McGee <dan@archlinux.org>
2009-01-12Rename alpm_get_md5sum to alpm_compute_md5sum and alpm_dep_get_string to ↵Nagy Gabor
alpm_dep_compute_string This patch introduces the following function name convention: _compute_ in function name: the return value must be freed. _get_ in function name: the return value must not be freed. Signed-off-by: Nagy Gabor <ngaba@bibl.u-szeged.hu> Signed-off-by: Dan McGee <dan@archlinux.org>
2008-11-30Add regex to delta code so we don't segfault when reading lineDan McGee
If the delta line doesn't match our regex, we won't go and process it, possibly walking off the end of the string. Signed-off-by: Dan McGee <dan@archlinux.org>
2008-06-04Use correct C type for file sizesDan McGee
We have been using unsigned long as a file size type for a while, which works but isn't quite correct and could easily break. Worse was probably our use of int in the download callback functions, which could be restrictive for packages > 2GB in size. Switch all file size variables to use off_t, which is the preferred type for file sizes. Note that at least on Linux, all applications compiled against libalpm must now be sure to use large file support, where _FILE_OFFSET_BITS is defined to be 64 or there will be some weird issues that crop up. Signed-off-by: Dan McGee <dan@archlinux.org>
2008-04-26Completely rework delta algorithmChantry Xavier
Using the graph structures that Nagy set up for dependency sorting, we now do a similar process for deltas. Load up all of the deltas into a graph object on which we can then apply Dijkstra's algorithm, using the new weight field of graph struct. We initialize the nodes weight using the base files that we can use in our filecache (both filename and md5sum must match). The algorithm then picks the best path among those that can be resolved. Note that this algorithm has a few advantages over the old one: 1. It is completely file agnostic. These delta chains do not have to consist of package files- this could be adopted to do delta-fied DBs. 2. It does not use the local_db anymore, or even care if a package or file is currently installed. Instead, it only looks in the filecache for files and packages that match delta chain entries. Original-work-by: Dan McGee <dan@archlinux.org> Signed-off-by: Chantry Xavier <shiningxc@gmail.com>
2008-04-26Rework delta struct and modify code accordinglyDan McGee
Start to move the delta struct away from an assumed package name scheme and towards something that is package (or even filename) agnostic. This will allow us much greater flexibility in the usage of deltas (maybe even sync DBs some day) as well as allowing code outside of delta.h/delta.c to be much cleaner with less of a need for snprintf() calls. Signed-off-by: Dan McGee <dan@archlinux.org>
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