Changelogs and install files were getting extracted into the local
db folder before it was manually created. This created issues for
uses with 0077 umasks and was highlighted with the new sudo handling
of umasks (FS#12263).
This moves the local db creation to its own function which is called
before the start of package archive extraction. Also, added a check
that the folder is actually created.
Signed-off-by: Allan McRae <allan@archlinux.org>
[Dan: rename to _alpm_db_prepare()]
Signed-off-by: Dan McGee <dan@archlinux.org>
These two functions now take directly a package list rather than a database.
checkdbconflicts was renamed to checkconflicts.
Signed-off-by: Xavier Chantry <shiningxc@gmail.com>
This is more rational and coherent with PM_TRANS_EVT_UPGRADE_DONE.
Signed-off-by: Nagy Gabor <ngaba@bibl.u-szeged.hu>
Signed-off-by: Dan McGee <dan@archlinux.org>
In case of error some allocated memory wasn't freed in commit_single_pkg.
Note: The return value of this function is not used.
Signed-off-by: Nagy Gabor <ngaba@bibl.u-szeged.hu>
Signed-off-by: Dan McGee <dan@archlinux.org>
The dynamic pmconflict_t must be freed with _alpm_conflict_free.
Signed-off-by: Nagy Gabor <ngaba@bibl.u-szeged.hu>
Signed-off-by: Dan McGee <dan@archlinux.org>
Errors like the following one happen regularly (for unknown reasons...) :
error: could not open file /var/lib/pacman/local//glibc-2.7-9/depends: No
such file or directory
Anyway, every time an user reported an error like that, it always seemed
like he thought the error was caused by the double /, which is obviously
wrong.
Since db->path always include a trailing /, there is no need to add one when
concatenating paths in be_files.c or add.c.
Additionally, some static strings were switched to dynamic.
And the computation of the "dbpath"/"pkgname"-"pkgversion" was refactored
in db_read, db_write and db_remove with a get_pkgpath static function.
Signed-off-by: Xavier Chantry <shiningxc@gmail.com>
Signed-off-by: Dan McGee <dan@archlinux.org>
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>
This event was unused, was missing the equivalent EXTRACT_DONE event, and
was useless because we already have ADD / UPGRADE START and DONE events.
Signed-off-by: Xavier Chantry <shiningxc@gmail.com>
Signed-off-by: Dan McGee <dan@archlinux.org>
Actually, just rename _alpm_versioncmp to alpm_pkg_vercmp and get rid of the
need for a wrapper since it did nothing anyway.
Signed-off-by: Dan McGee <dan@archlinux.org>
* remove obsolete and unused *_cmp helper functions like deppkg_cmp and
_alpm_grp_cmp
* new alpm_list_remove_str function, used 6 times in handle.c
* remove _alpm_prov_cmp / _alpm_db_whatprovides and replace them by
a more general alpm_find_pkg_satisfiers with a cleaner implementation.
before: alpm_db_whatprovides(db, targ)
after: alpm_find_pkg_satisfiers(alpm_db_getpkgcache(db), targ)
* remove satisfycmp and replace alpm_list_find + satisfycmp usage by
_alpm_find_dep_satisfiers.
before : alpm_list_find(_alpm_db_get_pkgcache(db), dep, satisfycmp)
after : _alpm_find_dep_satisfiers(_alpm_db_get_pkgcache(db), dep)
* remove _alpm_pkgname_pkg_cmp, which was used with alpm_list_remove, and
use _alpm_pkg_find + alpm_list_remove with _alpm_pkg_cmp instead.
This commit actually get rids of all complicated and asymmetric _cmp
functions. I first thought these functions were worth it, be caused it
allowed us to reuse list_find and list_remove. But this was at the detriment
of the clarity and also the ease of use of these functions, dangerous
because of their asymmetricity.
Signed-off-by: Chantry Xavier <shiningxc@gmail.com>
Signed-off-by: Dan McGee <dan@archlinux.org>
We only need a copy of this string once we know we are going to extract it,
and we don't need a static buffer to copy it into since it is coming from a
known-length string.
Signed-off-by: Dan McGee <dan@archlinux.org>
We were a bit juryrigged using one call to mkstemp() before rather than
extracting the new files side-by-side and doing our comparisons there. We
were also facing some permissions issues. Instead, make our life easier by
extracting all temp files to a '.paccheck' extension, doing our md5
comparisons, and then taking the correct actions.
Still to be done here- a cleanup of the use of PATH_MAX which should not be
necessary if we use dynamic allocation on the heap.
Signed-off-by: Dan McGee <dan@archlinux.org>
I'm not sure why these were ever here, as by this point we have already
extracted the file meaning a call to this function is basically a no-op.
Signed-off-by: Dan McGee <dan@archlinux.org>
Things must have gotten stricter with GCC 4.3 on the '%zd' printf string and
this is the first I've tried to compile there. Fix the problem by using
size_t instead of int.
Signed-off-by: Dan McGee <dan@archlinux.org>
There were a few issues with this code:
1. We already had an open fd to a file, but never used it to our benefit.
Use the libarchive convienence method to write the current file contents
straight to a file descriptor.
2. The real problem cropped up on Windows where the locking semantics caused
the old way of extraction to fail because we had an open file descriptor.
By using the file descriptor and closing it ASAP, we prevent these
failures.
Signed-off-by: Dan McGee <dan@archlinux.org>
After the libarchive upgrade from 2.4.12 to 2.4.14, our usage of
archive_entry_pathname became dangerous. We were using the result of that
function even after calls to archive_entry_set_pathname.
With 2.4.14, the entryname becomes wrong after these calls, and so all the
future use of entryname are bogus. entryname is used quite a lot for
logging, so that's not so bad. But it's also used for the backup handling,
so that's not very cool. For example, reinstalling a package with backup
entries will erase all the md5 entries from the DB, because they won't be
found back.
entryname is now a static string so that we can easily keep the result of
archive_entry_pathname.
Signed-off-by: Chantry Xavier <shiningxc@gmail.com>
[Dan: fixed version numbers in commit message]
Signed-off-by: Dan McGee <dan@archlinux.org>
The _alpm_backup_split function always alloced memory for the fname, and we
let it disappear in a specific case (upgrade026.py). Fix the issue.
Signed-off-by: Dan McGee <dan@archlinux.org>
Its implementation was quite broken:
* add_loadtarget() might have silently filtered out some targets when
replacing an older version.
* This was used in sync.c to determine whether a target is implicit or not,
which is incorrect behavior. Before this patch we silently removed user
confirmed replacements; now we always warn on a replacement.
* remove001.py behavior was quite odd in adding same target 5 times to the
target list, we can change this behavior to be a failure.
Signed-off-by: Nagy Gabor <ngaba@bibl.u-szeged.hu>
[Xav: changed remove001 pactest accordingly]
Signed-off-by: Chantry Xavier <shiningxc@gmail.com>
[Dan: rewrote commit message]
Signed-off-by: Dan McGee <dan@archlinux.org>
Fixes FS#9235.
We already had the following case in extract_single_file :
/* cases 1,2,3: couldn't stat an existing file, skip all backup checks */
But we actually only did a lstat here. And if lstat worked, we did a stat
without checking.
When lstat works and stat fails, it means we have a broken symlink, like in
FS#9235. We can actually treat this case like a non-existing file.
The broken symlink will then be simply overwritten.
Signed-off-by: Chantry Xavier <shiningxc@gmail.com>
This is the symmetric of --asdeps, install packages explicitly.
Documentation and completion files were updated accordingly.
Added sync301.py and upgrade032.py pactest files to test this.
I also made a little modification in ALLDEPS handling too.
Signed-off-by: Nagy Gabor <ngaba@bibl.u-szeged.hu>
Signed-off-by: Chantry Xavier <shiningxc@gmail.com>
This also affects all structures with static strings, such as depmiss,
conflict, etc. This should help a lot with memory usage, and hopefully make
things a bit more "idiot proof".
Currently our pactest pass/fail rate is identical before and after this
patch. This is not to say it is a perfect patch- I have yet to pull valgrind
out. However, this should be quite safe to use in all situations from here
on out, and we can start plugging the memleaks.
Original-work-by: Aaron Griffin <aaronmgriffin@gmail.com>
Signed-off-by: Dan McGee <dan@archlinux.org>
This was the case of the bash packaging error where a file was removed from
the package but not the backup array.
I just added a sanity check so that only the files from the backup array
that are also in the filelist are used.
I had to edit upgrade026 pactest slightly : it required the file to be
copied to .pacsave instead of moved. But just moving it should be enough, as
we agreed on the ML :
http://www.archlinux.org/pipermail/pacman-dev/2007-December/010440.html
Signed-off-by: Chantry Xavier <shiningxc@gmail.com>
Signed-off-by: Dan McGee <dan@archlinux.org>
This is the bash case when the /etc/profile file was removed by error from
the package, but stayed in the backup array.
Ref:
http://www.archlinux.org/pipermail/arch-dev-public/2007-December/003556.html
Also fixed a little typo in add.c, but it's disabled code.
Signed-off-by: Chantry Xavier <shiningxc@gmail.com>
As I mentioned earlier on the ML :
http://www.archlinux.org/pipermail/pacman-dev/2007-December/010416.html
the first part of commit 843d368ef6 had no effect because of a bug.
So I fixed the bug, but since this would change backup handling behavior,
and possibly require other bigger changes to work right, I decided to just
disable that part temporarily, and left a TODO in the code.
Signed-off-by: Chantry Xavier <shiningxc@gmail.com>
Signed-off-by: Dan McGee <dan@archlinux.org>
Update the GPL boilerplate to direct people to the GNU website for a copy of
the license, as well as bump all of Judd's copyrights to 2007.
Signed-off-by: Dan McGee <dan@archlinux.org>
alpm_list_find and alpm_list_find_ptr will now return a void *, and
alpm_list_find_str will return a char *, instead of an int.
Signed-off-by: Chantry Xavier <shiningxc@gmail.com>
Signed-off-by: Dan McGee <dan@archlinux.org>
I started playing around with gcov today and it showed a few places in the
code that we don't test at all. This is the start of ensuring that we
execute most of the code in our codebase.
Signed-off-by: Dan McGee <dan@archlinux.org>
_alpm_innerconflicts: check for target<->target conflicts
_alpm_outerconflicts: check for target<->localpkg conflicts
This will be useful in sync.c clean-up and in testdb.c
As an application the patch also fixes a misleading message (and a memleak)
in add.c
Signed-off-by: Nagy Gabor <ngaba@bibl.u-szeged.hu>
Signed-off-by: Chantry Xavier <shiningxc@gmail.com>
Signed-off-by: Dan McGee <dan@archlinux.org>
checkdeps and resolvedeps now take both a remove list and an install list as
arguments, allowing dependencies to be calculated correctly.
This broke the sync990 pactest, but this pactest used dependencies and
provides in an unusual way, so it has been changed.
Dan: the sync990 pactest was just plain wrong. It didn't satisfy the
dependencies correctly, so should never have succeeded.
Signed-off-by: Chantry Xavier <shiningxc@gmail.com>
[Dan: some variable renaming, clarification in commit message]
Signed-off-by: Dan McGee <dan@archlinux.org>
This operation made sense in the days before sync DBs existed, but it no
longer has the same usefulness it once did.
Signed-off-by: Dan McGee <dan@archlinux.org>
Signed-off-by: Chantry Xavier <shiningxc@gmail.com>
Signed-off-by: Nagy Gabor <ngaba@bibl.u-szeged.hu>
Signed-off-by: Aaron Griffin <aaronmgriffin@gmail.com>
pmdepmissing_t was used for two totally different things :
missing dependencies, and dependency conflicts.
So this patch simply adds a type for dep conflicts,
and convert the code to use it.
This fix the TODO in conflict.c :
/* TODO WTF is a 'depmissing' doing indicating a conflict? */
Additionally, the code in conflict.c now eliminates the duplicated conflicts.
If pkg1 conflicts with pkg2, and pkg2 conflicts with pkg1, only one of them will be stored.
However the conflict handling in sync_prepare (sync.c) is still very asymetrical, and very ugly too.
This should be improved in the future (there is already a pending patch from Nagy that cleans it a lot).
Signed-off-by: Chantry Xavier <shiningxc@gmail.com>
The names related to conflicts are misleading :
For dependencies conflicts, the type is pmdepmissing,
and the function names contain just "conflict".
For file conflicts, the type is pmconflict,
and some functions contained just "conflict", some others "fileconflict".
So this is the first step for improving the situation.
Original idea/patch from Nagy, but the patch already didn't apply anymore,
so I did it again.
The main difference is that I kept the conflictype, with the following renaming :
pmconflicttype_t -> pmfileconflicttype_t
PM_CONFLICT_TYPE_TARGET -> PM_FILECONFLICT_TARGET
PM_CONFLICT_TYPE_FILE -> PM_FILECONFLICT_FILESYSTEM
Signed-off-by: Chantry Xavier <shiningxc@gmail.com>
This file only contained one private function : _alpm_db_whatprovides .
And the public alpm_db_whatprovides was in db.c , so I moved everything there.
Signed-off-by: Chantry Xavier <shiningxc@gmail.com>
[Dan: updated POTFILES.in as well]
Signed-off-by: Dan McGee <dan@archlinux.org>
The old alpm_list_find was renamed to alpm_list_find_ptr, and a new
alpm_list_find was introduced, which uses the fn comparison-function
parameter in its decision.
Now both alpm_list_find_ptr (a new ptrcmp helper function was also
added) and alpm_list_find_str are just an alpm_list_find call.
Signed-off-by: Nagy Gabor <ngaba@bibl.u-szeged.hu>
Signed-off-by: Chantry Xavier <shiningxc@gmail.com>
[Dan: made ptrcmp a static function]
Signed-off-by: Dan McGee <dan@archlinux.org>
Instead of using the often-busted REQUIREDBY entries in the pacman database,
compute them each time they are required. This should help many things:
1. Simplify the codebase
2. Prevent future database corruption
3. Ensure when we do use requiredby, it is always correct
4. Shrink the pmpkg_t memory overhead
Signed-off-by: Dan McGee <dan@archlinux.org>
Linux lstat follows POSIX standards and dereferences a symlink pointing
to a directory if there is a trailing slash. For purposes of libalpm, we
don't want this so make a lstat wrapper that suppresses this behavior.
Signed-off-by: Dan McGee <dan@archlinux.org>
I broke scriptlet logging with ad691001e2.
Readd more or less what was there before, although it still needs a lot of
work including hopefully rewriting it to a new event subsystem and having
it log to a seperate file.
Signed-off-by: Dan McGee <dan@archlinux.org>
Packages and DBs now support using the UNIX epoch (seconds since Jan 1, 1970)
for use in builddate and installdate. This will only affect newly built
packages. Old existing packages with the text format are still supported, but
this is deprecated.
In the case of removal of text time support, this code will fail gracefully,
returning the start of the epoch for broken packages.
Signed-off-by: Aaron Griffin <aaronmgriffin@gmail.com>
In most cases, we want to fully scan a package when we load it, which serves
as a integrity verification check. However, there are times when it is only
desired to read the metadata and nothing else, so allow the caller of pkg_load
to choose the behavior they need.
This pays big dividends in speeding up pacman cache cleaning functionality.
Old (729 packages):
real 1m43.717s
user 1m20.785s
sys 0m2.993s
New (729 packages):
real 0m25.607s
user 0m19.389s
sys 0m0.543s
Signed-off-by: Dan McGee <dan@archlinux.org>
Previously, package names must match a specified scheme or they will cause
pacman add operations to fail. This is not a very intelligent or necessary
way to act, so remove the dependency on the name of the package to be
installed and read all relevant information from the metadata instead.
This does have one causality to be addressed later- pacman cache cleaning
functionality, which has never been phenomenal, just lost most capability.
Signed-off-by: Dan McGee <dan@archlinux.org>
As seen with the recent upgrade of pacman and the removal of the
pacman.d/current mirrorlist, files that were formerly in the backup array
get deleted upon their removal, which could be dangerous. Instead, we should
use the combined backup array of the old and new package. This fix should
address this issue in a relatively straightforward way.
In addition, old files should be moved to pacsave locations as expected.
Signed-off-by: Dan McGee <dan@archlinux.org>
The mistake fixed in commit 26441cf65c
was actually done at two places.
This fix the second one.
Also remove one unnecessary newline introduced by
commit d34b2c4ed8
Signed-off-by: Chantry Xavier <shiningxc@gmail.com>
My two previous hacks related to this part
(8038190c7c and
b15a5194d1) were caused by the lack of
understanding of a feature introduced a while ago:
Better control over CTRL-C interruptions -- do not leave the DB in an
inconsistent state (54008798ef).
Now I have been looking at this commit, and the added feature is indeed
interesting. The main problem I had with it is that it does a rather
unusual use of alpm_trans_release, which caused a few problems that I tried
to fix in a weird way. I think these problems were caused by the fact that
there weren't any difference between "interrupt transaction" and "release a
transaction which failed" actions from the alpm_trans_release POV. So I
decided to add a new function instead, alpm_trans_interrupt, which is
called on Ctrl+C, and which only sets trans->state to STATE_INTERRUPTED so
that remove_commit and add_commit can exit cleanly at a safe moment. This
allowed me to revert my two previous hacks as well.
Also ensure we handle SIGINT correctly in all cases- if a transaction is
not ongoing, then we can free the transaction and exit quickly.
Signed-off-by: Chantry Xavier <shiningxc@gmail.com>
Signed-off-by: Dan McGee <dan@archlinux.org>
This allows us to remove the hack in the frontend where we added a newline
to everything coming out of the pm_printf functions, and instead let the
developer put newlines where they want them. This should be the last hangover
of that auto-newline stuff.
Signed-off-by: Dan McGee <dan@archlinux.org>
This patch cleans up and fix the _alpm_trans_update_depends function
and ensure that all requiredby fields are filled in case of multiple satisfiers
(previously, the handling of mutliple satisfiers in that function was inconsistent).
This makes a special case handling of requiredby in commit_single_pkg() obsolete,
and so allows cleaning that code as well.
Also fixed upgrade056 pactest because :
1) the requiredby fields were wrong, and this wouldn't happen with the fixed _alpm_trans_update_depends().
2) this is a very unusual case anyway (and handling all corner cases combined to a broken database
seems nearly impossible to achieve).
References :
http://www.archlinux.org/pipermail/pacman-dev/2007-July/008919.htmlhttp://www.archlinux.org/pipermail/pacman-dev/2007-July/008920.html
Signed-off-by: Chantry Xavier <shiningxc@gmail.com>
* Move alpm md5 functions to lib/libalpm/util.c
* Remove unneeded includes for md5.h
* Replace md5 implementation with one from http://www.xyssl.org
Dan: clean up XySSL code by removing parts we don't use, and add a note
saying what changed.
Dan: fix alpm_get_md5sum, off by one error on the malloc call and other
small things.
Signed-off-by: Andrew Fyfe <andrew@neptune-one.net>
Signed-off-by: Dan McGee <dan@archlinux.org>
There's no need for a second hashing algorithm. MD5 serves the purpose
of verifying that a package file hasn't been corrupted during download.
Signed-off-by: Andrew Fyfe <andrew@neptune-one.net>
Signed-off-by: Dan McGee <dan@archlinux.org>
We were using a void *data element in pmpkg_t before, which is unsafe by its
nature of being untyped. Reimplement data as origin_data being a union that
can hold either a path to a package file or a pointer to a cache database,
and make the other necesary updates in the code to reflect this. See package.h
for details.
Signed-off-by: Dan McGee <dan@archlinux.org>
This is a full refactoring of _alpm_add_commit into multiple functions and a
better layout for later. Some highlights:
* No regressions in pactest performance.
* Much cleaner layout. add_commit is split into four functions:
upgrade_remove, extract_single_file, commit_single_pkg, _alpm_add_commit
* No more super-functions, the heaviest (extract_single_file) is finally
under 400 lines, with much improved commenting as well.
* Incorporation of Andrew Fyfe's ideas for fixing FS #7484. Try to handle
all possible cases of extraction combinations with files, symlinks, dirs,
and non-existant entries on the filesystem. This should make our dealings
with libarchive fall more into our control.
Signed-off-by: Dan McGee <dan@archlinux.org>
This replaces the former -D operation that was undocumented and rather
hacky. It can be used with add, upgrade, or sync transactions and will affect
all packages installed. Should close FS #7193.
Also tell makepkg to use this new flag.
Signed-off-by: Dan McGee <dan@archlinux.org>
This fixes the failure of the requiredby004 pactest in a not so pretty way,
but it gets the job done. I purposely used the extremely long name of
PM_TRANS_TYPE_REMOVEUPGRADE to be both clear and in the hope that someone
else will figure out a better solution.
Original idea from Nagy Gabor, patch updated and cleaned for current code.
Signed-off-by: Dan McGee <dan@archlinux.org>
Remove versioncmp.c by moving all functions to locations that make sense.
Move replacement functions (for building without glibc) into util.c where
they belong, and do proper checks for them instead of using __sun__, etc.
Signed-off-by: Dan McGee <dan@archlinux.org>
There is no real reason to burden our translators with these messages, as
anyone helping to debug these will probably want them in English.
Signed-off-by: Dan McGee <dan@archlinux.org>
We shouldn't translate log messages to pacman.log so it is consistant and
can be parsed by other tools. Remove all gettext _() around these strings.
Signed-off-by: Dan McGee <dan@archlinux.org>
I ran flawfinder and sparse over the pacman source code and found a few
things that were worth fixing (and were quick fixes).
Signed-off-by: Dan McGee <dan@archlinux.org>
Adds the ARCHIVE_EXTRACT_NO_OVERWRITE libarchive flags
for extracting files and directories.
This will prevent symlinks for being overwritten by directories.
All other files that need to be extracted should already have
been deleted previously by pacman.
This flag is not used for extracting files in backup array
to /tmp/alpm_XXXX, because this file is created by mkstemp first,
and so needs to be overwritten by the file from the archive.
Signed-off-by: Chantry Xavier <shiningxc@gmail.com>
With libarchive 2.2.3 (previously 1.3.1), archive_read_extract now returns ARCHIVE_WARN
when a package is extracted as user, because for example, UID=0 or SUID bit can't be set.
This patch makes pacman not treating these warnings as errors anymore,
but simply ignoring them.
Signed-off-by: Chantry Xavier <shiningxc@gmail.com>
For future possibilities, don't extract any files that start with '.'.
This will allow us to add features such as the ChangeLog viewing without
having to wait to include these files in packages, because older versions
of pacman will be forward compatable with 'hidden' files at the root level
of the package.
Signed-off-by: Dan McGee <dan@archlinux.org>
This was a bad way to fix a problem upstream. Doing this resulted in
symlink permissions being applied to files installed on the system, leaving
some binaries with 77 permission, etc.
This reverts commit 4e6b7c1cde.
Add some 'const' keywords all over the code to make it a bit more strict on
what you can and can't do with data. This is especially important when we
return pointers to the pacman frontend- ideally this would always be
untouchable data.
Signed-off-by: Dan McGee <dan@archlinux.org>
This code depends on /etc/mtab existance, which is not very reliable in all
cases, especially in a chroot or non-Linux environment. Dump it for now
until we can find a better way.
Signed-off-by: Dan McGee <dan@archlinux.org>
Hackish fix to ensure libarchive extracts files and dirs with the right
permissions. For some reason extracting /tmp on install wasn't handled properly
by librachive, so an explicit chmod will fix this.
Signed-off-by: Aaron Griffin <aaronmgriffin@gmail.com>
* Remove some unnecessary conditional compiling in util.h- move the
functions tha required it to trans.c (along with a bunch of new header
includes).
* Clean up util.h a bit- remove some header includes, remove universal
libarchive include and only put it in the files that need it.
Signed-off-by: Dan McGee <dan@archlinux.org>
Remove inclusion of libintl.h from all files, because we can do it once
in util.c where the _() macro is defined.
Signed-off-by: Dan McGee <dan@archlinux.org>
the alpm strcmp operation which takes void* references.
* We had this great visibility patch, but never actually took advantage of
it. Added the right compile flag to make it work and added some more
SYMEXPORTs where necessary to have a successful compile.
reordering and adding ones that were forgotten (noticed when trying to
compile after reordering).
* Updated the HACKING file to include information on #include usage.
* print -> vprint in "making dir" function in pactest.
specified
* Use db->path when appropriate
* Commented out the FAKEROOT checks in libalpm. This should never ever be done.
TODO test this quite a bit, as this will never cause the transactions to fail
if RW operations are requested... right now it is totally up to the front end
to decide when to fail
* Use realpath() to canonicalize the root path when specified, so
_alpm_makepath() doesn't freak out
* Fixed some output/indent of MDFile and SHAFile algorithms
* More efficient sprintf() usage in MDFile/SHAFile
* Added real error output to _alpm_makepath
* Moved entirely to alpm_pkg_get_* accessors, to read data on demand
* Mostly removed the INFRQ_ parameters from outside the be_files backend (making
the backend more extensible in the long run)
* packages created from _alpm_db_scan now have the db and origin set (making
accessors actually work for these packages)
* removed _alpm_db_ensure_pkgcache
* totally revamped the _alpm_checkconflicts function, making it cleaner and
easier to read (and thus fix in the long run) - maintainable code ftw
NOTE: feel free to rename the functions... I couldn't think of anything better
* removed an extra loop in sync.c:find_replacements - no sense in looping over
an entire DB while strcmp'ing the name, when we have get_pkgfromcache
Other:
* package struct "license" -> "licenses"
* Created _alpm_sync_find (duplicate code in some places, find_pkginsync
* Minor const correctness changes along the way
* fixed a couple extra '/' pathing issues (non-issues really)
* removed a duplicate pkg_cmp function
* Added some provision switching hackery. This could probably use some
refactoring,.. it solves the following case:
pkg1 and pkg2 provide 'foo' and are both installed
pkg3 depends on 'foo' and so lists 'pkg1' in the REQUIREDBY db section
pkg1 is upgraded and no longer provides 'foo'
** This code ensures that the REQUIREDBY of pkg3 is updated to require pkg2
now instead of pkg1
