When replacing a file with a directory, any files inside the new
directory cannot possibly exist on the filesystem and can be skipped.
This allows cross-package symlink-to-directory transitions when there
are files with the same name under both the symlinked directory and the
new directory.
Signed-off-by: Andrew Gregory <andrew.gregory.8@gmail.com>
Signed-off-by: Allan McRae <allan@archlinux.org>
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>
* conflicts need to be freed with alpm_conflict_free
* sync dbs need to be unregistered and are handled by alpm_release
Signed-off-by: Andrew Gregory <andrew.gregory.8@gmail.com>
Signed-off-by: Allan McRae <allan@archlinux.org>
Front-ends should be able to free memory that alpm hands them.
Signed-off-by: Andrew Gregory <andrew.gregory.8@gmail.com>
Signed-off-by: Allan McRae <allan@archlinux.org>
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>
* append "/" to directories before searching package file lists
* use lstat over stat so symlinks aren't resolved
* fix the inverted check for stat's return value
Signed-off-by: Andrew Gregory <andrew.gregory.8@gmail.com>
Signed-off-by: Allan McRae <allan@archlinux.org>
Packages removed due to conflicts are always removed at the beginning of
the transaction and as such can be included in the check for whether all
owners of a directory will be removed in a transaction. Installed
versions of packages being upgraded, other than the one with the
conflict, cannot be used because our transaction ordering is not
intelligent enough to ensure that they are removed prior to the
installation of the conflicted package.
Also, return false from dir_belongsto_pkgs on errors. Previously, we
simply continued which could return true even if we were unable to
actually establish that the package owned the entire tree.
Signed-off-by: Andrew Gregory <andrew.gregory.8@gmail.com>
Signed-off-by: Allan McRae <allan@archlinux.org>
After the initial checks, we either use the path as a directory and have
to append the trailing slash anyway or use it as a file in which case
the trailing slash should be excluded.
Signed-off-by: Andrew Gregory <andrew.gregory.8@gmail.com>
Signed-off-by: Allan McRae <allan@archlinux.org>
p1 and p2 both come directly from the upgrade list without being copied
so they can be compared directly instead of comparing their names.
Also fix minor style violation.
Signed-off-by: Andrew Gregory <andrew.gregory.8@gmail.com>
Signed-off-by: Allan McRae <allan@archlinux.org>
Pacman currently bails when trying to extract a file over a directory
when using --force. Instead of ignoring all conflict, perform the
check and skip any file-file conflicts. Conflicts between directories
and files are still flagged and cause the transation to abort.
As a bonus, we now know about files changing packages when using
--force, so we can skip removing them fixing upgrade046.
Signed-off-by: Allan McRae <allan@archlinux.org>
alpm_filelist_contains was being used to search for resolved paths, but
searching in the unresolved paths, causing it to miss matches. We
always search unresolved paths and search the resolved paths if
available because _alpm_filelist_resolve is not public and requires
a context handle, so it can't be called from alpm_filelist_contains.
Signed-off-by: Andrew Gregory <andrew.gregory.8@gmail.com>
Signed-off-by: Allan McRae <allan@archlinux.org>
We were comparing files based on resolved paths but returning the
original file_t structures, which were not necessarily in the same
order. The extra file_t information was only being used to determine if
the file was a directory which can be accomplished by testing for
a trailing slash, so just return the resolved path.
Signed-off-by: Andrew Gregory <andrew.gregory.8@gmail.com>
Signed-off-by: Allan McRae <allan@archlinux.org>
We were comparing files based on resolved paths but returning the
original file_t structures, which were not necessarily in the same
order. The additional file_t information was never used, so just return
the resolved path.
Signed-off-by: Andrew Gregory <andrew.gregory.8@gmail.com>
Signed-off-by: Allan McRae <allan@archlinux.org>
alpm_filelist_intersection returns a list of pointers to internal file_t
struct's, so only the list itself should be freed.
Signed-off-by: Andrew Gregory <andrew.gregory.8@gmail.com>
Signed-off-by: Allan McRae <allan@archlinux.org>
This applies to a case such as when /lib is a symlink to /usr/lib. If a
package is installed which contains /lib/libfoo.so, pacman will complain
if this package is then "fixed" to contain /usr/lib/libfoo.so. Since
these have the same effective path and it exists within the same
package, ignore the conflict.
Fixes FS#30681.
Signed-off-by: Allan McRae <allan@archlinux.org>
File paths are resolved if necessary during inter-package conflict
checks so that packages carrying the same effective file due to
directory symlinks on the filesystem are flagged as conflicting.
Signed-off-by: Allan McRae <allan@archlinux.org>
To improve conflict checking, we will need to make these functions
diverge to an extent where having two separate functions will be
preferable.
Signed-off-by: Allan McRae <allan@archlinux.org>
Signed-off-by: Dan McGee <dan@archlinux.org>
We have a few of these and might as well gather them together. This also
cleans up the code a bit by using an enum instead of integer values, as
well as makes a "search for file in filelist" function public so
frontends can do better than straight linear search of the filelists.
Signed-off-by: Dan McGee <dan@archlinux.org>
Take advantage of the fact that our filelists are arrays sorted by
filename with a known length and use a binary search. This should speed
up file conflict checking, particularly when larger packages are
involved.
Signed-off-by: Dave Reisner <dreisner@archlinux.org>
Signed-off-by: Dan McGee <dan@archlinux.org>
When checking if a package owns a directory, it is important to check
not only that all the files in the directory are part of the package,
but also if the directory is part of a package. This catches empty
subdirectories during conflict checking for directory to file/symlink
replacements.
Signed-off-by: Allan McRae <allan@archlinux.org>
Signed-off-by: Dan McGee <dan@archlinux.org>
When two packages own an empty directory, pacman finds no conflict when
one of those packages wants to replace the directory with a file or a
symlink. When it comes to actually extracting the new file/symlink,
pacman sees the directory is still there (we do not remove empty
directories if they are owned by a package) and refuses to extract.
Detect this potential conflict early and bail. Note that it is a
_potential_ conflict and not a guaranteed one as the other package owning
the directory could be updated or removed first which would remove
the conflict. However, pacman currently can not sort package installation
order to ensure this, so this conflict requires manual upgrade ordering.
Signed-off-by: Allan McRae <allan@archlinux.org>
Signed-off-by: Dan McGee <dan@archlinux.org>
Apparently gcc 4.7 has decided that -Wshadow warnings aren't worth
reporting anymore even with the flag enabled. These were found on
an Ubuntu 10.04 install.
Signed-off-by: Dave Reisner <dreisner@archlinux.org>
Signed-off-by: Dan McGee <dan@archlinux.org>
There is little reason here to grab 4K from the heap only to return it a
few lines later. Instead, just use the stack to hold the returned value
saving ourselves the malloc/free cycle.
Signed-off-by: Dan McGee <dan@archlinux.org>
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>
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>
It is quite easy to hoist this potentially repeated computation out of
the loop; even if we don't end up using it, it is super cheap to do it
only once.
Signed-off-by: Dan McGee <dan@archlinux.org>
The return should probably be checked to ensure its not longer than
PATH_MAX, but I have no idea what the correct behavior is when that
happens.
Signed-off-by: Dave Reisner <dreisner@archlinux.org>
Signed-off-by: Dan McGee <dan@archlinux.org>
There aretwo seperate issues in the same block of file conflict
checking code here:
1) If realpath errored, such as when a symlink was broken, we would call
'continue' rather than simply exit this particular method of
resolution. This was likely just a copy-paste mistake as the previous
resolving steps all use loops where continue makes sense. Refactor
the check so we only proceed if realpath is successful, and continue
with the rest of the checks either way.
2) The real problem this code was trying to solve was canonicalizing
path component (e.g., directory) symlinks. The final component, if
not a directory, should not be handled at all in this loop. Add a
!S_ISLNK() condition to the loop so we only call this for real files.
There are few other small cleanups to the debug messages that I made
while debugging this problem- we don't need to keep printing the file
name, and ensure every block that sets resolved_conflict to true prints
a debug message so we know how it was resolved.
This fixes the expected failures from symlink010.py and symlink011.py,
while still ensuring the fix for fileconflict007.py works.
Signed-off-by: Dan McGee <dan@archlinux.org>
When we switched to a file object and not just a simple string, we missed an
update along the way here in target-target conflicts. This patch looks
large, but it really comes down to one errant (char *) cast before that has
been reworked to explicitly point to the alpm_file_t object. The rest is
simply code cleanup.
Signed-off-by: Dan McGee <dan@archlinux.org>
Put all the callback stuff in alpm.h in one spot, and make the following
renames for clarity with the new structure:
ALPM_TRANS_EVT_* --> ALPM_EVENT_*
ALPM_TRANS_CONV_* --> ALPM_QUESTION_*
ALPM_TRANS_PROGRESS_* --> ALPM_PROGRESS_*
alpm_option_get_convcb() --> alpm_option_get_questioncb()
alpm_option_set_convcb() --> alpm_option_set_questioncb()
Signed-off-by: Dan McGee <dan@archlinux.org>
