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pacman/lib/libalpm/remove.c

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/*
* remove.c
*
* Copyright (c) 2002-2005 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 <errno.h>
#include <time.h>
#include <fcntl.h>
#include <string.h>
#include <zlib.h>
#include <libtar.h>
/* pacman */
#include "util.h"
#include "error.h"
#include "rpmvercmp.h"
#include "md5.h"
#include "log.h"
#include "backup.h"
#include "package.h"
#include "db.h"
#include "cache.h"
#include "deps.h"
#include "provide.h"
#include "remove.h"
#include "handle.h"
#include "alpm.h"
extern pmhandle_t *handle;
int remove_loadtarget(pmdb_t *db, pmtrans_t *trans, char *name)
{
pmpkg_t *info;
ASSERT(db != 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));
if((info = db_scan(db, name, INFRQ_ALL)) == NULL) {
_alpm_log(PM_LOG_ERROR, "could not find %s in database", name);
RET_ERR(PM_ERR_PKG_NOT_FOUND, -1);
}
trans->packages = pm_list_add(trans->packages, info);
return(0);
}
int remove_prepare(pmdb_t *db, pmtrans_t *trans, PMList **data)
{
pmpkg_t *info;
PMList *lp, *i;
ASSERT(db != NULL, RET_ERR(PM_ERR_DB_NULL, -1));
ASSERT(trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1));
ASSERT(data != NULL, RET_ERR(PM_ERR_WRONG_ARGS, -1));
if(!(trans->flags & (PM_TRANS_FLAG_NODEPS)) && (trans->type != PM_TRANS_TYPE_UPGRADE)) {
TRANS_CB(trans, PM_TRANS_EVT_DEPS_START, NULL, NULL);
if((lp = checkdeps(db, trans->type, trans->packages)) != NULL) {
if(trans->flags & PM_TRANS_FLAG_CASCADE) {
while(lp) {
PMList *j;
for(j = lp; j; j = j->next) {
pmdepmissing_t* miss = (pmdepmissing_t*)j->data;
info = db_scan(db, miss->depend.name, INFRQ_ALL);
if(!pkg_isin(info, trans->packages)) {
trans->packages = pm_list_add(trans->packages, info);
}
}
FREELIST(lp);
lp = checkdeps(db, trans->type, trans->packages);
}
} else {
*data = lp;
RET_ERR(PM_ERR_UNSATISFIED_DEPS, -1);
}
}
if(trans->flags & PM_TRANS_FLAG_RECURSE) {
_alpm_log(PM_LOG_FLOW1, "finding removable dependencies...");
trans->packages = removedeps(db, trans->packages);
}
/* re-order w.r.t. dependencies */
_alpm_log(PM_LOG_FLOW2, "sorting by dependencies...");
lp = sortbydeps(trans->packages, PM_TRANS_TYPE_REMOVE);
/* free the old alltargs */
for(i = trans->packages; i; i = i->next) {
i->data = NULL;
}
FREELIST(trans->packages);
trans->packages = lp;
TRANS_CB(trans, PM_TRANS_EVT_DEPS_DONE, NULL, NULL);
}
return(0);
}
int remove_commit(pmdb_t *db, pmtrans_t *trans)
{
pmpkg_t *info;
struct stat buf;
PMList *targ, *lp;
char line[PATH_MAX+1];
ASSERT(db != NULL, RET_ERR(PM_ERR_DB_NULL, -1));
ASSERT(trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1));
for(targ = trans->packages; targ; targ = targ->next) {
char pm_install[PATH_MAX];
info = (pmpkg_t*)targ->data;
if(trans->type != PM_TRANS_TYPE_UPGRADE) {
TRANS_CB(trans, PM_TRANS_EVT_REMOVE_START, info, NULL);
/* run the pre-remove scriptlet if it exists */
snprintf(pm_install, PATH_MAX, "%s%s/%s/%s-%s/install", handle->root, handle->dbpath, db->treename, info->name, info->version);
_alpm_runscriptlet(handle->root, pm_install, "pre_remove", info->version, NULL);
}
if(!(trans->flags & PM_TRANS_FLAG_DBONLY)) {
/* iterate through the list backwards, unlinking files */
for(lp = pm_list_last(info->files); lp; lp = lp->prev) {
char *newpath = NULL;
int nb = 0;
if(_alpm_needbackup(lp->data, info->backup)) {
nb = 1;
}
if(!nb && trans->type == PM_TRANS_TYPE_UPGRADE) {
/* check noupgrade */
if(pm_list_is_strin(lp->data, handle->noupgrade)) {
nb = 1;
}
}
snprintf(line, PATH_MAX, "%s%s", handle->root, (char*)lp->data);
if(lstat(line, &buf)) {
_alpm_log(PM_LOG_ERROR, "file %s does not exist", line);
continue;
}
if(S_ISDIR(buf.st_mode)) {
_alpm_log(PM_LOG_DEBUG, "removing directory %s", line);
if(rmdir(line)) {
/* this is okay, other packages are probably using it. */
}
} else {
/* if the file is flagged, back it up to .pacsave */
if(nb) {
if(trans->type == PM_TRANS_TYPE_UPGRADE) {
/* we're upgrading so just leave the file as is. pacman_add() will handle it */
} else {
if(!(trans->flags & PM_TRANS_FLAG_NOSAVE)) {
newpath = (char*)realloc(newpath, strlen(line)+strlen(".pacsave")+1);
sprintf(newpath, "%s.pacsave", line);
rename(line, newpath);
_alpm_log(PM_LOG_WARNING, "%s saved as %s", line, newpath);
alpm_logaction("%s saved as %s", line, newpath);
} else {
_alpm_log(PM_LOG_DEBUG, "unlinking %s", line);
if(unlink(line)) {
_alpm_log(PM_LOG_ERROR, "cannot remove file %s", line);
}
}
}
} else {
_alpm_log(PM_LOG_DEBUG, "unlinking %s", line);
if(unlink(line)) {
_alpm_log(PM_LOG_ERROR, "cannot remove file %s", line);
}
}
}
}
}
if(trans->type != PM_TRANS_TYPE_UPGRADE) {
char pm_install[PATH_MAX];
/* run the post-remove script if it exists */
snprintf(pm_install, PATH_MAX, "%s%s/%s/%s-%s/install", handle->root, handle->dbpath, db->treename, info->name, info->version);
_alpm_runscriptlet(handle->root, pm_install, "post_remove", info->version, NULL);
}
/* remove the package from the database */
if(db_remove(db, info) == -1) {
_alpm_log(PM_LOG_ERROR, "failed to remove database entry %s/%s-%s", db->path, info->name, info->version);
}
/* update dependency packages' REQUIREDBY fields */
for(lp = info->depends; lp; lp = lp->next) {
PMList *last, *j;
pmpkg_t *depinfo = NULL;
pmdepend_t depend;
splitdep((char*)lp->data, &depend);
depinfo = db_scan(db, depend.name, INFRQ_DESC|INFRQ_DEPENDS);
if(depinfo == NULL) {
/* look for a provides package */
PMList *provides = _alpm_db_whatprovides(db, depend.name);
if(provides) {
/* TODO: should check _all_ packages listed in provides, not just
* the first one.
*/
/* use the first one */
depinfo = db_scan(db, provides->data, INFRQ_DEPENDS);
FREELIST(provides);
if(depinfo == NULL) {
/* wtf */
continue;
}
} else {
continue;
}
}
/* splice out this entry from requiredby */
last = pm_list_last(depinfo->requiredby);
/* ORE - use list_remove here? */
for(j = depinfo->requiredby; j; j = j->next) {
if(!strcmp((char*)j->data, info->name)) {
if(j == depinfo->requiredby) {
depinfo->requiredby = j->next;
}
if(j->prev) j->prev->next = j->next;
if(j->next) j->next->prev = j->prev;
/* free the spliced node */
j->prev = j->next = NULL;
FREELIST(j);
break;
}
}
db_write(db, depinfo, INFRQ_DEPENDS);
FREEPKG(depinfo);
}
if(trans->type != PM_TRANS_TYPE_UPGRADE) {
TRANS_CB(trans, PM_TRANS_EVT_REMOVE_DONE, info, NULL);
alpm_logaction("removed %s (%s)", info->name, info->version);
}
}
/* run ldconfig if it exists */
_alpm_log(PM_LOG_FLOW2, "running \"%ssbin/ldconfig -r %s\"", handle->root, handle->root);
_alpm_ldconfig(handle->root);
/* cache needs to be rebuilt */
db_free_pkgcache(db);
return(0);
}
/* vim: set ts=2 sw=2 noet: */
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