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pacman/lib/libalpm/sync.c

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/*
* sync.c
*
* Copyright (c) 2002-2006 by Judd Vinet <jvinet@zeroflux.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
* USA.
*/
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <fcntl.h>
#include <string.h>
#ifdef CYGWIN
#include <limits.h> /* PATH_MAX */
#endif
#include <libtar.h>
#include <zlib.h>
/* pacman */
#include "log.h"
#include "util.h"
#include "error.h"
#include "list.h"
#include "package.h"
#include "db.h"
#include "cache.h"
#include "deps.h"
#include "conflict.h"
#include "provide.h"
#include "trans.h"
#include "sync.h"
#include "versioncmp.h"
#include "handle.h"
#include "alpm.h"
extern pmhandle_t *handle;
pmsyncpkg_t *sync_new(int type, pmpkg_t *spkg, void *data)
{
pmsyncpkg_t *sync;
if((sync = (pmsyncpkg_t *)malloc(sizeof(pmsyncpkg_t))) == NULL) {
return(NULL);
}
sync->type = type;
sync->pkg = spkg;
sync->data = data;
return(sync);
}
void sync_free(pmsyncpkg_t *sync)
{
if(sync == NULL) {
return;
}
if(sync->type == PM_SYNC_TYPE_REPLACE) {
FREELISTPKGS(sync->data);
} else {
FREEPKG(sync->data);
}
free(sync);
}
/* Test for existence of a package in a PMList* of pmsyncpkg_t*
* If found, return a pointer to the respective pmsyncpkg_t*
*/
static pmsyncpkg_t *find_pkginsync(char *needle, PMList *haystack)
{
PMList *i;
pmsyncpkg_t *sync = NULL;
int found = 0;
for(i = haystack; i && !found; i = i->next) {
sync = i->data;
if(sync && !strcmp(sync->pkg->name, needle)) {
found = 1;
}
}
if(!found) {
sync = NULL;
}
return(sync);
}
/* It returns a PMList of packages extracted from the given archive
* (the archive must have been generated by gensync)
*/
PMList *sync_load_dbarchive(char *archive)
{
PMList *lp = NULL;
DIR *dir = NULL;
TAR *tar = NULL;
tartype_t gztype = {
(openfunc_t)_alpm_gzopen_frontend,
(closefunc_t)gzclose,
(readfunc_t)gzread,
(writefunc_t)gzwrite
};
if(tar_open(&tar, archive, &gztype, O_RDONLY, 0, TAR_GNU) == -1) {
pm_errno = PM_ERR_NOT_A_FILE;
goto error;
}
/* ORE - readdir tmp_dir */
/* for each subdir, parse %s/desc and %s/depends */
/* then db_write it */
tar_close(tar);
return(lp);
error:
if(tar) {
tar_close(tar);
}
if(dir) {
closedir(dir);
}
return(NULL);
}
int sync_sysupgrade(pmtrans_t *trans, pmdb_t *db_local, PMList *dbs_sync)
{
PMList *i, *j, *k;
/* check for "recommended" package replacements */
_alpm_log(PM_LOG_FLOW1, "checking for package replacements");
for(i = dbs_sync; i; i = i->next) {
for(j = db_get_pkgcache(i->data); j; j = j->next) {
pmpkg_t *spkg = j->data;
for(k = spkg->replaces; k; k = k->next) {
PMList *m;
for(m = db_get_pkgcache(db_local); m; m = m->next) {
pmpkg_t *lpkg = m->data;
if(!strcmp(k->data, lpkg->name)) {
_alpm_log(PM_LOG_DEBUG, "checking replacement %s for package %s", k->data, spkg->name);
if(pm_list_is_strin(lpkg->name, handle->ignorepkg)) {
_alpm_log(PM_LOG_WARNING, "%s-%s: ignoring package upgrade (to be replaced by %s-%s)",
lpkg->name, lpkg->version, spkg->name, spkg->version);
} else {
/* get confirmation for the replacement */
int doreplace = 0;
QUESTION(trans, PM_TRANS_CONV_REPLACE_PKG, lpkg, spkg, ((pmdb_t *)i->data)->treename, &doreplace);
if(doreplace) {
/* if confirmed, add this to the 'final' list, designating 'lpkg' as
* the package to replace.
*/
pmsyncpkg_t *sync;
pmpkg_t *dummy = pkg_new(lpkg->name, NULL);
if(dummy == NULL) {
pm_errno = PM_ERR_MEMORY;
goto error;
}
dummy->requiredby = _alpm_list_strdup(lpkg->requiredby);
/* check if spkg->name is already in the packages list. */
sync = find_pkginsync(spkg->name, trans->packages);
if(sync) {
/* found it -- just append to the replaces list */
sync->data = pm_list_add(sync->data, dummy);
} else {
/* none found -- enter pkg into the final sync list */
sync = sync_new(PM_SYNC_TYPE_REPLACE, spkg, NULL);
if(sync == NULL) {
FREEPKG(dummy);
pm_errno = PM_ERR_MEMORY;
goto error;
}
sync->data = pm_list_add(NULL, dummy);
trans->packages = pm_list_add(trans->packages, sync);
}
_alpm_log(PM_LOG_FLOW2, "%s-%s elected for upgrade (to be replaced by %s-%s)",
lpkg->name, lpkg->version, spkg->name, spkg->version);
}
}
break;
}
}
}
}
}
/* match installed packages with the sync dbs and compare versions */
_alpm_log(PM_LOG_FLOW1, "checking for package upgrades");
for(i = db_get_pkgcache(db_local); i; i = i->next) {
int cmp;
int replace = 0;
pmpkg_t *local = i->data;
pmpkg_t *spkg = NULL;
pmsyncpkg_t *sync;
for(j = dbs_sync; !spkg && j; j = j->next) {
spkg = db_get_pkgfromcache(j->data, local->name);
}
if(spkg == NULL) {
_alpm_log(PM_LOG_DEBUG, "%s: not found in sync db -- skipping", local->name);
continue;
}
/* we don't care about a to-be-replaced package's newer version */
for(j = trans->packages; j && !replace; j = j->next) {
sync = j->data;
if(sync->type == PM_SYNC_TYPE_REPLACE) {
if(pkg_isin(spkg->name, sync->data)) {
replace = 1;
}
}
}
if(replace) {
_alpm_log(PM_LOG_DEBUG, "%s is already elected for removal -- skipping",
spkg->name);
continue;
}
/* compare versions and see if we need to upgrade */
cmp = versioncmp(local->version, spkg->version);
if(cmp > 0 && !spkg->force) {
/* local version is newer */
_alpm_log(PM_LOG_WARNING, "%s-%s: local version is newer",
local->name, local->version);
} else if(cmp == 0) {
/* versions are identical */
} else if(pm_list_is_strin(i->data, handle->ignorepkg)) {
/* package should be ignored (IgnorePkg) */
_alpm_log(PM_LOG_WARNING, "%s-%s: ignoring package upgrade (%s)",
local->name, local->version, spkg->version);
} else {
pmpkg_t *dummy = pkg_new(local->name, local->version);
sync = sync_new(PM_SYNC_TYPE_UPGRADE, spkg, dummy);
if(sync == NULL) {
FREEPKG(dummy);
pm_errno = PM_ERR_MEMORY;
goto error;
}
_alpm_log(PM_LOG_FLOW2, "%s-%s elected for upgrade (%s => %s)",
local->name, local->version, local->version, spkg->version);
trans->packages = pm_list_add(trans->packages, sync);
}
}
return(0);
error:
return(-1);
}
int sync_addtarget(pmtrans_t *trans, pmdb_t *db_local, PMList *dbs_sync, char *name)
{
char targline[PKG_FULLNAME_LEN];
char *targ;
PMList *j;
pmpkg_t *local;
pmpkg_t *spkg = NULL;
pmsyncpkg_t *sync;
int cmp;
ASSERT(db_local != NULL, RET_ERR(PM_ERR_DB_NULL, -1));
ASSERT(trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1));
ASSERT(name != NULL, RET_ERR(PM_ERR_WRONG_ARGS, -1));
STRNCPY(targline, name, PKG_FULLNAME_LEN);
targ = strchr(targline, '/');
if(targ) {
*targ = '\0';
targ++;
for(j = dbs_sync; j && !spkg; j = j->next) {
pmdb_t *dbs = j->data;
if(strcmp(dbs->treename, targline) == 0) {
spkg = db_get_pkgfromcache(dbs, targ);
if(spkg == NULL) {
/* Search provides */
PMList *p = _alpm_db_whatprovides(dbs, targ);
if(p == NULL) {
RET_ERR(PM_ERR_PKG_NOT_FOUND, -1);
}
spkg = db_get_pkgfromcache(dbs, p->data);
p->data = NULL;
FREELIST(p);
}
}
}
} else {
targ = targline;
for(j = dbs_sync; j && !spkg; j = j->next) {
pmdb_t *dbs = j->data;
spkg = db_get_pkgfromcache(dbs, targ);
}
if(spkg == NULL) {
/* Search provides */
for(j = dbs_sync; j && !spkg; j = j->next) {
pmdb_t *dbs = j->data;
PMList *p = _alpm_db_whatprovides(dbs, targ);
if(p) {
spkg = db_get_pkgfromcache(dbs, p->data);
p->data = NULL;
FREELIST(p);
}
}
}
}
if(spkg == NULL) {
RET_ERR(PM_ERR_PKG_NOT_FOUND, -1);
}
local = db_get_pkgfromcache(db_local, spkg->name);
if(local) {
cmp = versioncmp(local->version, spkg->version);
if(cmp > 0) {
/* local version is newer -- get confirmation before adding */
int resp = 0;
QUESTION(trans, PM_TRANS_CONV_LOCAL_NEWER, local, NULL, NULL, &resp);
if(!resp) {
_alpm_log(PM_LOG_WARNING, "%s-%s: local version is newer -- skipping", local->name, local->version);
return(0);
}
} else if(cmp == 0) {
/* versions are identical -- get confirmation before adding */
int resp = 0;
QUESTION(trans, PM_TRANS_CONV_LOCAL_UPTODATE, local, NULL, NULL, &resp);
if(!resp) {
_alpm_log(PM_LOG_WARNING, "%s-%s is up to date -- skipping", local->name, local->version);
return(0);
}
}
}
/* add the package to the transaction */
if(!find_pkginsync(spkg->name, trans->packages)) {
pmpkg_t *dummy = NULL;
if(local) {
dummy = pkg_new(local->name, local->version);
if(dummy == NULL) {
RET_ERR(PM_ERR_MEMORY, -1);
}
}
sync = sync_new(PM_SYNC_TYPE_UPGRADE, spkg, dummy);
if(sync == NULL) {
FREEPKG(dummy);
RET_ERR(PM_ERR_MEMORY, -1);
}
trans->packages = pm_list_add(trans->packages, sync);
}
return(0);
}
/* Helper function for _alpm_list_remove
*/
static int ptr_cmp(const void *s1, const void *s2)
{
return((s1 == s2));
}
int sync_prepare(pmtrans_t *trans, pmdb_t *db_local, PMList *dbs_sync, PMList **data)
{
PMList *deps = NULL;
PMList *list = NULL; /* list allowing checkdeps usage with data from trans->packages */
PMList *trail = NULL; /* breadcrum list to avoid running into circles */
PMList *asked = NULL;
PMList *i, *j;
ASSERT(db_local != NULL, RET_ERR(PM_ERR_DB_NULL, -1));
ASSERT(trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1));
if(data) {
*data = NULL;
}
if(!(trans->flags & PM_TRANS_FLAG_NODEPS)) {
for(i = trans->packages; i; i = i->next) {
pmsyncpkg_t *sync = i->data;
list = pm_list_add(list, sync->pkg);
}
trail = _alpm_list_new();
/* Resolve targets dependencies */
EVENT(trans, PM_TRANS_EVT_RESOLVEDEPS_START, NULL, NULL);
_alpm_log(PM_LOG_FLOW1, "resolving targets dependencies");
for(i = trans->packages; i; i = i->next) {
pmpkg_t *spkg = ((pmsyncpkg_t *)i->data)->pkg;
if(resolvedeps(db_local, dbs_sync, spkg, list, trail, trans, data) == -1) {
/* pm_errno is set by resolvedeps */
goto error;
}
}
for(i = list; i; i = i->next) {
/* add the dependencies found by resolvedeps to the transaction set */
pmpkg_t *spkg = i->data;
if(!find_pkginsync(spkg->name, trans->packages)) {
pmsyncpkg_t *sync = sync_new(PM_SYNC_TYPE_DEPEND, spkg, NULL);
trans->packages = pm_list_add(trans->packages, sync);
_alpm_log(PM_LOG_FLOW2, "adding package %s-%s to the transaction targets",
spkg->name, spkg->version);
}
}
EVENT(trans, PM_TRANS_EVT_RESOLVEDEPS_DONE, NULL, NULL);
/* check for inter-conflicts and whatnot */
EVENT(trans, PM_TRANS_EVT_INTERCONFLICTS_START, NULL, NULL);
_alpm_log(PM_LOG_FLOW1, "looking for unresolvable dependencies");
deps = checkdeps(db_local, PM_TRANS_TYPE_UPGRADE, list);
if(deps) {
if(data) {
*data = deps;
deps = NULL;
}
pm_errno = PM_ERR_UNSATISFIED_DEPS;
goto error;
}
/* no unresolvable deps, so look for conflicts */
_alpm_log(PM_LOG_FLOW1, "looking for conflicts");
deps = checkconflicts(db_local, list);
if(deps) {
int errorout = 0;
for(i = deps; i && !errorout; i = i->next) {
pmdepmissing_t *miss = i->data;
int found = 0;
pmsyncpkg_t *sync;
pmpkg_t *local;
_alpm_log(PM_LOG_FLOW2, "package %s is conflicting with %s",
miss->target, miss->depend.name);
/* check if the conflicting package is one that's about to be removed/replaced.
* if so, then just ignore it
*/
for(j = trans->packages; j && !found; j = j->next) {
sync = j->data;
if(sync->type == PM_SYNC_TYPE_REPLACE) {
if(pkg_isin(miss->depend.name, sync->data)) {
found = 1;
}
}
}
if(found) {
_alpm_log(PM_LOG_DEBUG, "%s is already elected for removal -- skipping",
miss->depend.name);
continue;
}
sync = find_pkginsync(miss->target, trans->packages);
local = db_get_pkgfromcache(db_local, miss->depend.name);
/* check if this package also "provides" the package it's conflicting with
*/
if(pm_list_is_strin(miss->depend.name, sync->pkg->provides)) {
/* so just treat it like a "replaces" item so the REQUIREDBY
* fields are inherited properly.
*/
if(local) {
/* nothing to do for now: it will be handled later
* (not the same behavior as in pacman 2.x) */
} else {
char *rmpkg = NULL;
/* hmmm, depend.name isn't installed, so it must be conflicting
* with another package in our final list. For example:
*
* pacman -S blackbox xfree86
*
* If no x-servers are installed and blackbox pulls in xorg, then
* xorg and xfree86 will conflict with each other. In this case,
* we should follow the user's preference and rip xorg out of final,
* opting for xfree86 instead.
*/
/* figure out which one was requested in targets. If they both were,
* then it's still an unresolvable conflict. */
if(pm_list_is_strin(miss->depend.name, trans->targets)
&& !pm_list_is_strin(miss->target, trans->targets)) {
/* remove miss->target */
rmpkg = strdup(miss->target);
} else if(pm_list_is_strin(miss->target, trans->targets)
&& !pm_list_is_strin(miss->depend.name, trans->targets)) {
/* remove miss->depend.name */
rmpkg = strdup(miss->depend.name);
} else {
/* something's not right, bail out with a conflict error */
}
if(rmpkg) {
pmsyncpkg_t *rsync = find_pkginsync(rmpkg, trans->packages);
pmsyncpkg_t *spkg;
_alpm_log(PM_LOG_DEBUG, "removing %s from target list", rmpkg);
trans->packages = _alpm_list_remove(trans->packages, rsync, ptr_cmp, (void **)&spkg);
FREESYNC(spkg);
FREE(rmpkg);
continue;
}
}
}
/* It's a conflict -- see if they want to remove it
*/
_alpm_log(PM_LOG_DEBUG, "resolving package %s conflict", miss->target);
if(local) {
int doremove = 0;
if(!pm_list_is_strin(miss->depend.name, asked)) {
QUESTION(trans, PM_TRANS_CONV_CONFLICT_PKG, miss->target, miss->depend.name, NULL, &doremove);
asked = pm_list_add(asked, strdup(miss->depend.name));
if(doremove) {
/* remove miss->depend.name */
pmpkg_t *q = pkg_new(miss->depend.name, NULL);
q->requiredby = _alpm_list_strdup(local->requiredby);
if(sync->type != PM_SYNC_TYPE_REPLACE) {
/* switch this sync type to REPLACE */
sync->type = PM_SYNC_TYPE_REPLACE;
FREEPKG(sync->data);
}
/* append to the replaces list */
sync->data = pm_list_add(sync->data, q);
} else {
/* abort */
_alpm_log(PM_LOG_ERROR, "unresolvable package conflicts detected");
errorout = 1;
if(data) {
if((miss = (pmdepmissing_t *)malloc(sizeof(pmdepmissing_t))) == NULL) {
FREELIST(*data);
pm_errno = PM_ERR_MEMORY;
goto error;
}
*miss = *(pmdepmissing_t *)i->data;
*data = pm_list_add(*data, miss);
}
}
}
} else {
_alpm_log(PM_LOG_ERROR, "%s conflicts with %s", miss->target, miss->depend.name);
errorout = 1;
if(data) {
if((miss = (pmdepmissing_t *)malloc(sizeof(pmdepmissing_t))) == NULL) {
FREELIST(*data);
pm_errno = PM_ERR_MEMORY;
goto error;
}
*miss = *(pmdepmissing_t *)i->data;
*data = pm_list_add(*data, miss);
}
}
}
if(errorout) {
pm_errno = PM_ERR_CONFLICTING_DEPS;
goto error;
}
FREELIST(deps);
}
EVENT(trans, PM_TRANS_EVT_INTERCONFLICTS_DONE, NULL, NULL);
FREELISTPTR(list);
FREELISTPTR(trail);
FREELIST(asked);
/* XXX: this fails for cases where a requested package wants
* a dependency that conflicts with an older version of
* the package. It will be removed from final, and the user
* has to re-request it to get it installed properly.
*
* Not gonna happen very often, but should be dealt with...
*/
/* Check dependencies of packages in rmtargs and make sure
* we won't be breaking anything by removing them.
* If a broken dep is detected, make sure it's not from a
* package that's in our final (upgrade) list.
*/
/*EVENT(trans, PM_TRANS_EVT_CHECKDEPS_DONE, NULL, NULL);*/
for(i = trans->packages; i; i = i->next) {
pmsyncpkg_t *sync = i->data;
if(sync->type == PM_SYNC_TYPE_REPLACE) {
for(j = sync->data; j; j = j->next) {
list = pm_list_add(list, j->data);
}
}
}
if(list) {
_alpm_log(PM_LOG_FLOW1, "checking dependencies of packages designated for removal");
deps = checkdeps(db_local, PM_TRANS_TYPE_REMOVE, list);
if(deps) {
int errorout = 0;
for(i = deps; i; i = i->next) {
pmdepmissing_t *miss = i->data;
if(!find_pkginsync(miss->depend.name, trans->packages)) {
if(!errorout) {
errorout = 1;
}
if(data) {
if((miss = (pmdepmissing_t *)malloc(sizeof(pmdepmissing_t))) == NULL) {
FREELIST(*data);
pm_errno = PM_ERR_MEMORY;
goto error;
}
*miss = *(pmdepmissing_t *)i->data;
*data = pm_list_add(*data, miss);
}
}
}
if(errorout) {
pm_errno = PM_ERR_UNSATISFIED_DEPS;
goto error;
}
FREELIST(deps);
}
FREELISTPTR(list);
}
/*EVENT(trans, PM_TRANS_EVT_CHECKDEPS_DONE, NULL, NULL);*/
}
return(0);
error:
FREELISTPTR(list);
FREELISTPTR(trail);
FREELIST(asked);
FREELIST(deps);
return(-1);
}
int sync_commit(pmtrans_t *trans, pmdb_t *db_local, PMList **data)
{
PMList *i;
pmtrans_t *tr = NULL;
int replaces = 0;
ASSERT(db_local != NULL, RET_ERR(PM_ERR_DB_NULL, -1));
ASSERT(trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1));
/* remove conflicting and to-be-replaced packages */
tr = trans_new();
if(tr == NULL) {
_alpm_log(PM_LOG_ERROR, "could not create removal transaction");
pm_errno = PM_ERR_MEMORY;
goto error;
}
if(trans_init(tr, PM_TRANS_TYPE_REMOVE, PM_TRANS_FLAG_NODEPS, NULL, NULL) == -1) {
_alpm_log(PM_LOG_ERROR, "could not initialize the removal transaction");
goto error;
}
for(i = trans->packages; i; i = i->next) {
pmsyncpkg_t *sync = i->data;
if(sync->type == PM_SYNC_TYPE_REPLACE) {
PMList *j;
for(j = sync->data; j; j = j->next) {
pmpkg_t *pkg = j->data;
if(!pkg_isin(pkg->name, tr->packages)) {
if(trans_addtarget(tr, pkg->name) == -1) {
goto error;
}
replaces++;
}
}
}
}
if(replaces) {
_alpm_log(PM_LOG_FLOW1, "removing conflicting and to-be-replaced packages");
if(trans_prepare(tr, data) == -1) {
_alpm_log(PM_LOG_ERROR, "could not prepare removal transaction");
goto error;
}
/* we want the frontend to be aware of commit details */
tr->cb_event = trans->cb_event;
if(trans_commit(tr, NULL) == -1) {
_alpm_log(PM_LOG_ERROR, "could not commit removal transaction");
goto error;
}
}
FREETRANS(tr);
/* install targets */
_alpm_log(PM_LOG_FLOW1, "installing packages");
tr = trans_new();
if(tr == NULL) {
_alpm_log(PM_LOG_ERROR, "could not create transaction");
pm_errno = PM_ERR_MEMORY;
goto error;
}
if(trans_init(tr, PM_TRANS_TYPE_UPGRADE, trans->flags | PM_TRANS_FLAG_NODEPS, NULL, NULL) == -1) {
_alpm_log(PM_LOG_ERROR, "could not initialize transaction");
goto error;
}
for(i = trans->packages; i; i = i->next) {
pmsyncpkg_t *sync = i->data;
pmpkg_t *spkg = sync->pkg;
char str[PATH_MAX];
snprintf(str, PATH_MAX, "%s%s/%s-%s" PM_EXT_PKG, handle->root, handle->cachedir, spkg->name, spkg->version);
if(trans_addtarget(tr, str) == -1) {
goto error;
}
/* using _alpm_list_last() is ok because addtarget() adds the new target at the
* end of the tr->packages list */
spkg = _alpm_list_last(tr->packages)->data;
if(sync->type == PM_SYNC_TYPE_DEPEND) {
spkg->reason = PM_PKG_REASON_DEPEND;
}
}
if(trans_prepare(tr, data) == -1) {
_alpm_log(PM_LOG_ERROR, "could not prepare transaction");
goto error;
}
/* we want the frontend to be aware of commit details */
tr->cb_event = trans->cb_event;
if(trans_commit(tr, NULL) == -1) {
_alpm_log(PM_LOG_ERROR, "could not commit transaction");
goto error;
}
FREETRANS(tr);
/* propagate replaced packages' requiredby fields to their new owners */
if(replaces) {
_alpm_log(PM_LOG_FLOW1, "updating database for replaced packages dependencies");
for(i = trans->packages; i; i = i->next) {
pmsyncpkg_t *sync = i->data;
if(sync->type == PM_SYNC_TYPE_REPLACE) {
PMList *j;
pmpkg_t *new = db_get_pkgfromcache(db_local, sync->pkg->name);
for(j = sync->data; j; j = j->next) {
PMList *k;
pmpkg_t *old = j->data;
/* merge lists */
for(k = old->requiredby; k; k = k->next) {
if(!pm_list_is_strin(k->data, new->requiredby)) {
/* replace old's name with new's name in the requiredby's dependency list */
PMList *m;
pmpkg_t *depender = db_get_pkgfromcache(db_local, k->data);
if(depender == NULL) {
/* If the depending package no longer exists in the local db,
* then it must have ALSO conflicted with sync->pkg. If
* that's the case, then we don't have anything to propagate
* here. */
continue;
}
for(m = depender->depends; m; m = m->next) {
if(!strcmp(m->data, old->name)) {
FREE(m->data);
m->data = strdup(new->name);
}
}
if(db_write(db_local, depender, INFRQ_DEPENDS) == -1) {
_alpm_log(PM_LOG_ERROR, "could not update 'requiredby' database entry %s-%s",
new->name, new->version);
}
/* add the new requiredby */
new->requiredby = pm_list_add(new->requiredby, strdup(k->data));
}
}
}
if(db_write(db_local, new, INFRQ_DEPENDS) == -1) {
_alpm_log(PM_LOG_ERROR, "could not update new database entry %s-%s",
new->name, new->version);
}
}
}
}
return(0);
error:
FREETRANS(tr);
return(-1);
}
/* vim: set ts=2 sw=2 noet: */
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