mirror of
https://github.com/moparisthebest/pacman
synced 2024-11-02 08:35:06 -04:00
309 lines
9.2 KiB
C
309 lines
9.2 KiB
C
/*
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* remove.c
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*
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* Copyright (c) 2002-2006 by Judd Vinet <jvinet@zeroflux.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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* USA.
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*/
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#include "config.h"
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#include <stdlib.h>
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#include <errno.h>
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#include <time.h>
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#include <fcntl.h>
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#include <string.h>
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#ifdef CYGWIN
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#include <limits.h> /* PATH_MAX */
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#endif
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#include <zlib.h>
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#include <libtar.h>
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/* pacman */
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#include "util.h"
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#include "error.h"
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#include "versioncmp.h"
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#include "md5.h"
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#include "log.h"
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#include "backup.h"
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#include "package.h"
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#include "db.h"
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#include "cache.h"
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#include "deps.h"
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#include "provide.h"
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#include "remove.h"
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#include "handle.h"
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#include "alpm.h"
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extern pmhandle_t *handle;
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int remove_loadtarget(pmtrans_t *trans, pmdb_t *db, char *name)
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{
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pmpkg_t *info;
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ASSERT(db != NULL, RET_ERR(PM_ERR_DB_NULL, -1));
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ASSERT(trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1));
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ASSERT(name != NULL, RET_ERR(PM_ERR_WRONG_ARGS, -1));
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/* ORE
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we should better find the package in the cache, and then perform a
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db_read(INFRQ_FILES) to add files information to it. */
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_alpm_log(PM_LOG_FLOW2, "loading target %s", name);
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if((info = db_scan(db, name, INFRQ_ALL)) == NULL) {
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_alpm_log(PM_LOG_ERROR, "could not find %s in database", name);
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RET_ERR(PM_ERR_PKG_NOT_FOUND, -1);
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}
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if(pkg_isin(info, trans->packages)) {
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FREEPKG(info);
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RET_ERR(PM_ERR_TRANS_DUP_TARGET, -1);
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}
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trans->packages = pm_list_add(trans->packages, info);
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return(0);
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}
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int remove_prepare(pmtrans_t *trans, pmdb_t *db, PMList **data)
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{
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PMList *lp;
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ASSERT(db != NULL, RET_ERR(PM_ERR_DB_NULL, -1));
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ASSERT(trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1));
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ASSERT(data != NULL, RET_ERR(PM_ERR_WRONG_ARGS, -1));
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if(!(trans->flags & (PM_TRANS_FLAG_NODEPS)) && (trans->type != PM_TRANS_TYPE_UPGRADE)) {
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EVENT(trans, PM_TRANS_EVT_CHECKDEPS_START, NULL, NULL);
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_alpm_log(PM_LOG_FLOW1, "looking for unsatisfied dependencies");
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if((lp = checkdeps(db, trans->type, trans->packages)) != NULL) {
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if(trans->flags & PM_TRANS_FLAG_CASCADE) {
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while(lp) {
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PMList *j;
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for(j = lp; j; j = j->next) {
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pmdepmissing_t* miss = (pmdepmissing_t*)j->data;
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pmpkg_t *info = db_get_pkgfromcache(db, miss->depend.name);
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if(!pkg_isin(info, trans->packages)) {
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/* ORE
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see remove_loadtarget() on how to avoid db_scan() */
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info = db_scan(db, miss->depend.name, INFRQ_ALL);
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trans->packages = pm_list_add(trans->packages, info);
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}
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}
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FREELIST(lp);
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lp = checkdeps(db, trans->type, trans->packages);
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}
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} else {
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*data = lp;
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RET_ERR(PM_ERR_UNSATISFIED_DEPS, -1);
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}
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}
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if(trans->flags & PM_TRANS_FLAG_RECURSE) {
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_alpm_log(PM_LOG_FLOW1, "finding removable dependencies");
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trans->packages = removedeps(db, trans->packages);
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}
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/* re-order w.r.t. dependencies */
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_alpm_log(PM_LOG_FLOW1, "sorting by dependencies");
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lp = sortbydeps(trans->packages, PM_TRANS_TYPE_REMOVE);
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/* free the old alltargs */
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FREELISTPTR(trans->packages);
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trans->packages = lp;
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EVENT(trans, PM_TRANS_EVT_CHECKDEPS_DONE, NULL, NULL);
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}
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return(0);
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}
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/* Helper function for comparing strings
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*/
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static int str_cmp(const void *s1, const void *s2)
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{
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return(strcmp(s1, s2));
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}
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int remove_commit(pmtrans_t *trans, pmdb_t *db)
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{
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pmpkg_t *info;
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struct stat buf;
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PMList *targ, *lp;
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char line[PATH_MAX+1];
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ASSERT(db != NULL, RET_ERR(PM_ERR_DB_NULL, -1));
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ASSERT(trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1));
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for(targ = trans->packages; targ; targ = targ->next) {
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char pm_install[PATH_MAX];
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info = (pmpkg_t*)targ->data;
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if(trans->type != PM_TRANS_TYPE_UPGRADE) {
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EVENT(trans, PM_TRANS_EVT_REMOVE_START, info, NULL);
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_alpm_log(PM_LOG_FLOW1, "removing package %s-%s", info->name, info->version);
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/* run the pre-remove scriptlet if it exists */
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if(info->scriptlet) {
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snprintf(pm_install, PATH_MAX, "%s/%s-%s/install", db->path, info->name, info->version);
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_alpm_runscriptlet(handle->root, pm_install, "pre_remove", info->version, NULL);
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}
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}
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if(!(trans->flags & PM_TRANS_FLAG_DBONLY)) {
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_alpm_log(PM_LOG_FLOW1, "removing files");
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/* iterate through the list backwards, unlinking files */
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for(lp = pm_list_last(info->files); lp; lp = lp->prev) {
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int nb = 0;
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char *file = lp->data;
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char *md5 =_alpm_needbackup(lp->data, info->backup);
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if(md5) {
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nb = 1;
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free(md5);
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}
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if(!nb && trans->type == PM_TRANS_TYPE_UPGRADE) {
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/* check noupgrade */
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if(pm_list_is_strin(lp->data, handle->noupgrade)) {
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nb = 1;
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}
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}
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snprintf(line, PATH_MAX, "%s%s", handle->root, file);
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if(lstat(line, &buf)) {
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_alpm_log(PM_LOG_ERROR, "file %s does not exist", file);
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continue;
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}
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if(S_ISDIR(buf.st_mode)) {
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if(rmdir(line)) {
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/* this is okay, other packages are probably using it. */
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_alpm_log(PM_LOG_DEBUG, "keeping directory %s", file);
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} else {
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_alpm_log(PM_LOG_FLOW2, "removing directory %s", file);
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}
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} else {
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/* check the "skip list" before removing the file.
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* see the big comment block in db_find_conflicts() for an
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* explanation. */
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int skipit = 0;
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PMList *j;
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for(j = trans->skiplist; j; j = j->next) {
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if(!strcmp(file, (char*)j->data)) {
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skipit = 1;
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}
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}
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if(skipit) {
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_alpm_log(PM_LOG_FLOW2, "skipping removal of %s as it has moved to another package\n", file);
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} else {
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/* if the file is flagged, back it up to .pacsave */
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if(nb) {
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if(trans->type == PM_TRANS_TYPE_UPGRADE) {
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/* we're upgrading so just leave the file as is. pacman_add() will handle it */
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} else {
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if(!(trans->flags & PM_TRANS_FLAG_NOSAVE)) {
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char newpath[PATH_MAX];
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snprintf(newpath, PATH_MAX, "%s.pacsave", line);
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rename(line, newpath);
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_alpm_log(PM_LOG_WARNING, "%s saved as %s", file, newpath);
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alpm_logaction("%s saved as %s", line, newpath);
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} else {
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_alpm_log(PM_LOG_FLOW2, "unlinking %s", file);
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if(unlink(line)) {
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_alpm_log(PM_LOG_ERROR, "cannot remove file %s", file);
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}
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}
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}
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} else {
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_alpm_log(PM_LOG_FLOW2, "unlinking %s", file);
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if(unlink(line)) {
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_alpm_log(PM_LOG_ERROR, "cannot remove file %s", file);
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}
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}
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}
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}
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}
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}
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if(trans->type != PM_TRANS_TYPE_UPGRADE) {
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/* run the post-remove script if it exists */
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if(info->scriptlet) {
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char pm_install[PATH_MAX];
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snprintf(pm_install, PATH_MAX, "%s/%s-%s/install", db->path, info->name, info->version);
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_alpm_runscriptlet(handle->root, pm_install, "post_remove", info->version, NULL);
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}
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}
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/* remove the package from the database */
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_alpm_log(PM_LOG_FLOW1, "updating database");
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_alpm_log(PM_LOG_FLOW2, "removing database entry %s", info->name);
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if(db_remove(db, info) == -1) {
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_alpm_log(PM_LOG_ERROR, "could not remove database entry %s/%s-%s", db->treename, info->name, info->version);
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}
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if(db_remove_pkgfromcache(db, info) == -1) {
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_alpm_log(PM_LOG_ERROR, "could not remove entry %s from cache", info->name);
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}
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/* update dependency packages' REQUIREDBY fields */
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_alpm_log(PM_LOG_FLOW2, "updating dependency packages 'requiredby' fields");
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for(lp = info->depends; lp; lp = lp->next) {
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pmpkg_t *depinfo = NULL;
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pmdepend_t depend;
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char *data;
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if(splitdep((char*)lp->data, &depend)) {
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continue;
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}
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depinfo = db_get_pkgfromcache(db, depend.name);
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if(depinfo == NULL) {
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/* look for a provides package */
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PMList *provides = _alpm_db_whatprovides(db, depend.name);
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if(provides) {
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/* TODO: should check _all_ packages listed in provides, not just
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* the first one.
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*/
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/* use the first one */
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depinfo = db_get_pkgfromcache(db, ((pmpkg_t *)provides->data)->name);
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FREELISTPTR(provides);
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if(depinfo == NULL) {
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/* wtf */
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continue;
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}
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} else {
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continue;
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}
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}
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/* splice out this entry from requiredby */
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depinfo->requiredby = _alpm_list_remove(depinfo->requiredby, info->name, str_cmp, (void **)&data);
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FREE(data);
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_alpm_log(PM_LOG_DEBUG, "updating 'requiredby' field for package %s", depinfo->name);
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if(db_write(db, depinfo, INFRQ_DEPENDS)) {
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_alpm_log(PM_LOG_ERROR, "could not update 'requiredby' database entry %s/%s-%s", db->treename, depinfo->name, depinfo->version);
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}
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}
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if(trans->type != PM_TRANS_TYPE_UPGRADE) {
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EVENT(trans, PM_TRANS_EVT_REMOVE_DONE, info, NULL);
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}
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}
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/* run ldconfig if it exists */
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if(trans->type != PM_TRANS_TYPE_UPGRADE) {
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_alpm_log(PM_LOG_FLOW1, "running \"ldconfig -r %s\"", handle->root);
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_alpm_ldconfig(handle->root);
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}
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return(0);
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}
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/* vim: set ts=2 sw=2 noet: */
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