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pacman/lib/libalpm/trans.c
Dan McGee e24c22e308 * A little more hacking with wchar_t output, but nothing really changed in 
it. Eventually we'll make progress.
* Rewrote the _alpm_splitdep function to behave more like all our other
  function calls. Use heap instead of stack allocation for the depend struct,
  so now it needs to be freed by the caller.
2007-03-03 09:43:16 +00:00

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/*
* trans.c
*
* Copyright (c) 2002-2006 by Judd Vinet <jvinet@zeroflux.org>
* Copyright (c) 2005 by Aurelien Foret <orelien@chez.com>
* Copyright (c) 2005 by Christian Hamar <krics@linuxforum.hu>
* Copyright (c) 2005, 2006 by Miklos Vajna <vmiklos@frugalware.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 <string.h>
#include <libintl.h>
/* pacman */
#include "error.h"
#include "package.h"
#include "util.h"
#include "log.h"
#include "alpm_list.h"
#include "handle.h"
#include "add.h"
#include "remove.h"
#include "sync.h"
#include "alpm.h"
#include "deps.h"
#include "cache.h"
#include "provide.h"
pmtrans_t *_alpm_trans_new()
{
pmtrans_t *trans;
ALPM_LOG_FUNC;
if((trans = (pmtrans_t *)malloc(sizeof(pmtrans_t))) == NULL) {
_alpm_log(PM_LOG_ERROR, _("malloc failure: could not allocate %d bytes"), sizeof(pmtrans_t));
return(NULL);
}
trans->targets = NULL;
trans->packages = NULL;
trans->skip_add = NULL;
trans->skip_remove = NULL;
trans->type = 0;
trans->flags = 0;
trans->cb_event = NULL;
trans->cb_conv = NULL;
trans->cb_progress = NULL;
trans->state = STATE_IDLE;
return(trans);
}
void _alpm_trans_free(void *data)
{
pmtrans_t *trans = data;
ALPM_LOG_FUNC;
if(trans == NULL) {
return;
}
FREELIST(trans->targets);
if(trans->type == PM_TRANS_TYPE_SYNC) {
alpm_list_t *i;
for(i = trans->packages; i; i = i->next) {
FREESYNC(i->data);
}
FREELIST(trans->packages);
} else {
FREELISTPKGS(trans->packages);
}
FREELIST(trans->skip_add);
FREELIST(trans->skip_remove);
FREE(trans);
}
int _alpm_trans_init(pmtrans_t *trans, pmtranstype_t type, unsigned int flags,
alpm_trans_cb_event event, alpm_trans_cb_conv conv,
alpm_trans_cb_progress progress)
{
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1));
trans->type = type;
trans->flags = flags;
trans->cb_event = event;
trans->cb_conv = conv;
trans->cb_progress = progress;
trans->state = STATE_INITIALIZED;
return(0);
}
int _alpm_trans_sysupgrade(pmtrans_t *trans)
{
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1));
return(_alpm_sync_sysupgrade(trans, handle->db_local, handle->dbs_sync));
}
int _alpm_trans_addtarget(pmtrans_t *trans, char *target)
{
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1));
ASSERT(target != NULL, RET_ERR(PM_ERR_WRONG_ARGS, -1));
if(alpm_list_find_str(trans->targets, target)) {
RET_ERR(PM_ERR_TRANS_DUP_TARGET, -1);
}
switch(trans->type) {
case PM_TRANS_TYPE_ADD:
case PM_TRANS_TYPE_UPGRADE:
if(_alpm_add_loadtarget(trans, handle->db_local, target) == -1) {
/* pm_errno is set by _alpm_add_loadtarget() */
return(-1);
}
break;
case PM_TRANS_TYPE_REMOVE:
if(_alpm_remove_loadtarget(trans, handle->db_local, target) == -1) {
/* pm_errno is set by remove_loadtarget() */
return(-1);
}
break;
case PM_TRANS_TYPE_SYNC:
if(_alpm_sync_addtarget(trans, handle->db_local, handle->dbs_sync, target) == -1) {
/* pm_errno is set by sync_loadtarget() */
return(-1);
}
break;
}
trans->targets = alpm_list_add(trans->targets, strdup(target));
return(0);
}
int _alpm_trans_prepare(pmtrans_t *trans, alpm_list_t **data)
{
*data = NULL;
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1));
/* If there's nothing to do, return without complaining */
if(trans->packages == NULL) {
return(0);
}
switch(trans->type) {
case PM_TRANS_TYPE_ADD:
case PM_TRANS_TYPE_UPGRADE:
if(_alpm_add_prepare(trans, handle->db_local, data) == -1) {
/* pm_errno is set by _alpm_add_prepare() */
return(-1);
}
break;
case PM_TRANS_TYPE_REMOVE:
if(_alpm_remove_prepare(trans, handle->db_local, data) == -1) {
/* pm_errno is set by _alpm_remove_prepare() */
return(-1);
}
break;
case PM_TRANS_TYPE_SYNC:
if(_alpm_sync_prepare(trans, handle->db_local, handle->dbs_sync, data) == -1) {
/* pm_errno is set by _alpm_sync_prepare() */
return(-1);
}
break;
}
trans->state = STATE_PREPARED;
return(0);
}
int _alpm_trans_commit(pmtrans_t *trans, alpm_list_t **data)
{
ALPM_LOG_FUNC;
if(data!=NULL)
*data = NULL;
/* Sanity checks */
ASSERT(trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1));
/* If there's nothing to do, return without complaining */
if(trans->packages == NULL) {
return(0);
}
trans->state = STATE_COMMITING;
switch(trans->type) {
case PM_TRANS_TYPE_ADD:
case PM_TRANS_TYPE_UPGRADE:
if(_alpm_add_commit(trans, handle->db_local) == -1) {
/* pm_errno is set by _alpm_add_prepare() */
return(-1);
}
break;
case PM_TRANS_TYPE_REMOVE:
if(_alpm_remove_commit(trans, handle->db_local) == -1) {
/* pm_errno is set by _alpm_remove_prepare() */
return(-1);
}
break;
case PM_TRANS_TYPE_SYNC:
if(_alpm_sync_commit(trans, handle->db_local, data) == -1) {
/* pm_errno is set by _alpm_sync_commit() */
return(-1);
}
break;
}
trans->state = STATE_COMMITED;
return(0);
}
int _alpm_trans_update_depends(pmtrans_t *trans, pmpkg_t *pkg)
{
alpm_list_t *i, *j;
alpm_list_t *depends = NULL;
pmdb_t *localdb;
ALPM_LOG_FUNC;
/* Sanity checks */
ASSERT(trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1));
ASSERT(pkg != NULL, RET_ERR(PM_ERR_PKG_INVALID, -1));
depends = alpm_pkg_get_depends(pkg);
if(depends) {
_alpm_log(PM_LOG_DEBUG, _("updating dependency packages 'requiredby' fields for %s-%s"),
pkg->name, pkg->version);
} else {
_alpm_log(PM_LOG_DEBUG, _("package has no dependencies, no other packages to update"));
}
localdb = alpm_option_get_localdb();
for(i = depends; i; i = i->next) {
pmdepend_t* dep = _alpm_splitdep(i->data);
if(dep == NULL) {
continue;
}
if(trans->packages && trans->type == PM_TRANS_TYPE_REMOVE) {
if(_alpm_pkg_find(dep->name, handle->trans->packages)) {
continue;
}
}
pmpkg_t *deppkg = _alpm_db_get_pkgfromcache(localdb, dep->name);
if(!deppkg) {
int found_provides = 0;
/* look for a provides package */
alpm_list_t *provides = _alpm_db_whatprovides(localdb, dep->name);
for(j = provides; j; j = j->next) {
if(!j->data) {
continue;
}
pmpkg_t *provpkg = j->data;
deppkg = _alpm_db_get_pkgfromcache(localdb, alpm_pkg_get_name(provpkg));
if(!deppkg) {
continue;
}
found_provides = 1;
/* this is cheating... we call this function to populate the package */
alpm_pkg_get_requiredby(deppkg);
_alpm_log(PM_LOG_DEBUG, _("updating 'requiredby' field for package '%s'"), alpm_pkg_get_name(deppkg));
if(trans->type == PM_TRANS_TYPE_REMOVE) {
void *data = NULL;
deppkg->requiredby = alpm_list_remove(deppkg->requiredby,
alpm_pkg_get_name(pkg), _alpm_str_cmp, &data);
FREE(data);
} else {
deppkg->requiredby = alpm_list_add(deppkg->requiredby, strdup(alpm_pkg_get_name(pkg)));
}
if(_alpm_db_write(localdb, deppkg, INFRQ_DEPENDS)) {
_alpm_log(PM_LOG_ERROR, _("could not update 'requiredby' database entry %s-%s"),
alpm_pkg_get_name(deppkg), alpm_pkg_get_version(deppkg));
}
}
FREELISTPTR(provides);
if(!found_provides) {
_alpm_log(PM_LOG_DEBUG, _("could not find dependency '%s'"), dep->name);
continue;
}
}
/* this is cheating... we call this function to populate the package */
alpm_pkg_get_requiredby(deppkg);
_alpm_log(PM_LOG_DEBUG, _("updating 'requiredby' field for package '%s'"), deppkg->name);
if(trans->type == PM_TRANS_TYPE_REMOVE) {
void *data = NULL;
deppkg->requiredby = alpm_list_remove(deppkg->requiredby,
alpm_pkg_get_name(pkg), _alpm_str_cmp, &data);
FREE(data);
} else {
deppkg->requiredby = alpm_list_add(deppkg->requiredby, strdup(alpm_pkg_get_name(pkg)));
}
if(_alpm_db_write(localdb, deppkg, INFRQ_DEPENDS)) {
_alpm_log(PM_LOG_ERROR, _("could not update 'requiredby' database entry %s-%s"),
alpm_pkg_get_name(deppkg), alpm_pkg_get_version(deppkg));
}
free(dep);
}
return(0);
}
pmtranstype_t alpm_trans_get_type()
{
/* Sanity checks */
ASSERT(handle != NULL, return(-1));
ASSERT(handle->trans != NULL, return(-1));
return handle->trans->type;
}
unsigned int SYMEXPORT alpm_trans_get_flags()
{
/* Sanity checks */
ASSERT(handle != NULL, return(-1));
ASSERT(handle->trans != NULL, return(-1));
return handle->trans->flags;
}
alpm_list_t * alpm_trans_get_targets()
{
/* Sanity checks */
ASSERT(handle != NULL, return(NULL));
ASSERT(handle->trans != NULL, return(NULL));
return handle->trans->targets;
}
alpm_list_t SYMEXPORT * alpm_trans_get_pkgs()
{
/* Sanity checks */
ASSERT(handle != NULL, return(NULL));
ASSERT(handle->trans != NULL, return(NULL));
return handle->trans->packages;
}
/* vim: set ts=2 sw=2 noet: */
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