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-rw-r--r--lib/libalpm/remove.c259
1 files changed, 259 insertions, 0 deletions
diff --git a/lib/libalpm/remove.c b/lib/libalpm/remove.c
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+++ b/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, PM_RET_ERR(PM_ERR_DB_NULL, -1));
+ ASSERT(trans != NULL, PM_RET_ERR(PM_ERR_TRANS_NULL, -1));
+ ASSERT(name != NULL, PM_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);
+ PM_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;
+
+ ASSERT(db != NULL, PM_RET_ERR(PM_ERR_DB_NULL, -1));
+ ASSERT(trans != NULL, PM_RET_ERR(PM_ERR_TRANS_NULL, -1));
+ ASSERT(data != NULL, PM_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_CB_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;
+ PM_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);
+ }
+
+ TRANS_CB(trans, PM_TRANS_CB_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, PM_RET_ERR(PM_ERR_DB_NULL, -1));
+ ASSERT(trans != NULL, PM_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_CB_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_CB_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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