/* * remove.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 <errno.h> #include <time.h> #include <fcntl.h> #include <string.h> #ifdef CYGWIN #include <limits.h> /* PATH_MAX */ #endif #include <zlib.h> #include <libtar.h> /* pacman */ #include "util.h" #include "error.h" #include "versioncmp.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 _alpm_remove_loadtarget(pmtrans_t *trans, pmdb_t *db, 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(_alpm_pkg_isin(name, trans->packages)) { RET_ERR(PM_ERR_TRANS_DUP_TARGET, -1); } if((info = _alpm_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); } _alpm_log(PM_LOG_FLOW2, "adding %s in the targets list", info->name); trans->packages = _alpm_list_add(trans->packages, info); return(0); } int _alpm_remove_prepare(pmtrans_t *trans, pmdb_t *db, PMList **data) { PMList *lp; ASSERT(db != NULL, RET_ERR(PM_ERR_DB_NULL, -1)); ASSERT(trans != NULL, RET_ERR(PM_ERR_TRANS_NULL, -1)); if(!(trans->flags & (PM_TRANS_FLAG_NODEPS)) && (trans->type != PM_TRANS_TYPE_UPGRADE)) { EVENT(trans, PM_TRANS_EVT_CHECKDEPS_START, NULL, NULL); _alpm_log(PM_LOG_FLOW1, "looking for unsatisfied dependencies"); lp = _alpm_checkdeps(db, trans->type, trans->packages); if(lp != NULL) { if(trans->flags & PM_TRANS_FLAG_CASCADE) { while(lp) { PMList *i; for(i = lp; i; i = i->next) { pmdepmissing_t *miss = (pmdepmissing_t *)i->data; pmpkg_t *info = _alpm_db_scan(db, miss->depend.name, INFRQ_ALL); if(info) { _alpm_log(PM_LOG_FLOW2, "pulling %s in the targets list", info->name); trans->packages = _alpm_list_add(trans->packages, info); } else { _alpm_log(PM_LOG_ERROR, "could not find %s in database -- skipping", miss->depend.name); } } FREELIST(lp); lp = _alpm_checkdeps(db, trans->type, trans->packages); } } else { if(data) { *data = lp; } else { FREELIST(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 = _alpm_removedeps(db, trans->packages); } /* re-order w.r.t. dependencies */ _alpm_log(PM_LOG_FLOW1, "sorting by dependencies"); lp = _alpm_sortbydeps(trans->packages, PM_TRANS_TYPE_REMOVE); /* free the old alltargs */ FREELISTPTR(trans->packages); trans->packages = lp; EVENT(trans, PM_TRANS_EVT_CHECKDEPS_DONE, NULL, NULL); } return(0); } /* Helper function for comparing strings */ static int str_cmp(const void *s1, const void *s2) { return(strcmp(s1, s2)); } int _alpm_remove_commit(pmtrans_t *trans, pmdb_t *db) { 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) { EVENT(trans, PM_TRANS_EVT_REMOVE_START, info, NULL); _alpm_log(PM_LOG_FLOW1, "removing package %s-%s", info->name, info->version); /* run the pre-remove scriptlet if it exists */ if(info->scriptlet) { snprintf(pm_install, PATH_MAX, "%s/%s-%s/install", db->path, info->name, info->version); _alpm_runscriptlet(handle->root, pm_install, "pre_remove", info->version, NULL); } } if(!(trans->flags & PM_TRANS_FLAG_DBONLY)) { _alpm_log(PM_LOG_FLOW1, "removing files"); /* iterate through the list backwards, unlinking files */ for(lp = _alpm_list_last(info->files); lp; lp = lp->prev) { int nb = 0; char *file = lp->data; char *md5 = _alpm_needbackup(file, info->backup); if(md5) { nb = 1; free(md5); } if(!nb && trans->type == PM_TRANS_TYPE_UPGRADE) { /* check noupgrade */ if(_alpm_list_is_strin(file, handle->noupgrade)) { nb = 1; } } snprintf(line, PATH_MAX, "%s%s", handle->root, file); if(lstat(line, &buf)) { _alpm_log(PM_LOG_DEBUG, "file %s does not exist", file); continue; } if(S_ISDIR(buf.st_mode)) { if(rmdir(line)) { /* this is okay, other packages are probably using it. */ _alpm_log(PM_LOG_DEBUG, "keeping directory %s", file); } else { _alpm_log(PM_LOG_FLOW2, "removing directory %s", file); } } else { /* check the "skip list" before removing the file. * see the big comment block in db_find_conflicts() for an * explanation. */ int skipit = 0; PMList *j; for(j = trans->skiplist; j; j = j->next) { if(!strcmp(file, (char*)j->data)) { skipit = 1; } } if(skipit) { _alpm_log(PM_LOG_FLOW2, "skipping removal of %s as it has moved to another package", file); } 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)) { char newpath[PATH_MAX]; snprintf(newpath, PATH_MAX, "%s.pacsave", line); rename(line, newpath); _alpm_log(PM_LOG_WARNING, "%s saved as %s", file, newpath); alpm_logaction("%s saved as %s", line, newpath); } else { _alpm_log(PM_LOG_FLOW2, "unlinking %s", file); if(unlink(line)) { _alpm_log(PM_LOG_ERROR, "cannot remove file %s", file); } } } } else { _alpm_log(PM_LOG_FLOW2, "unlinking %s", file); if(unlink(line)) { _alpm_log(PM_LOG_ERROR, "cannot remove file %s", file); } } } } } } if(trans->type != PM_TRANS_TYPE_UPGRADE) { /* run the post-remove script if it exists */ if(info->scriptlet) { char pm_install[PATH_MAX]; snprintf(pm_install, PATH_MAX, "%s/%s-%s/install", db->path, info->name, info->version); _alpm_runscriptlet(handle->root, pm_install, "post_remove", info->version, NULL); } } /* remove the package from the database */ _alpm_log(PM_LOG_FLOW1, "updating database"); _alpm_log(PM_LOG_FLOW2, "removing database entry '%s'", info->name); if(_alpm_db_remove(db, info) == -1) { _alpm_log(PM_LOG_ERROR, "could not remove database entry %s-%s", info->name, info->version); } if(_alpm_db_remove_pkgfromcache(db, info) == -1) { _alpm_log(PM_LOG_ERROR, "could not remove entry '%s' from cache", info->name); } /* update dependency packages' REQUIREDBY fields */ _alpm_log(PM_LOG_FLOW2, "updating dependency packages 'requiredby' fields"); for(lp = info->depends; lp; lp = lp->next) { pmpkg_t *depinfo = NULL; pmdepend_t depend; char *data; if(_alpm_splitdep((char*)lp->data, &depend)) { continue; } /* if this dependency is in the transaction targets, no need to update * its requiredby info: it is in the process of being removed (if not * already done!) */ if(_alpm_pkg_isin(depend.name, trans->packages)) { continue; } depinfo = _alpm_db_get_pkgfromcache(db, depend.name); 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 = _alpm_db_get_pkgfromcache(db, ((pmpkg_t *)provides->data)->name); FREELISTPTR(provides); } if(depinfo == NULL) { _alpm_log(PM_LOG_ERROR, "could not find dependency '%s'", depend.name); /* wtf */ continue; } } /* splice out this entry from requiredby */ depinfo->requiredby = _alpm_list_remove(depinfo->requiredby, info->name, str_cmp, (void **)&data); FREE(data); _alpm_log(PM_LOG_DEBUG, "updating 'requiredby' field for package '%s'", depinfo->name); if(_alpm_db_write(db, depinfo, INFRQ_DEPENDS)) { _alpm_log(PM_LOG_ERROR, "could not update 'requiredby' database entry %s-%s", depinfo->name, depinfo->version); } } if(trans->type != PM_TRANS_TYPE_UPGRADE) { EVENT(trans, PM_TRANS_EVT_REMOVE_DONE, info, NULL); } } /* run ldconfig if it exists */ if(trans->type != PM_TRANS_TYPE_UPGRADE) { _alpm_log(PM_LOG_FLOW1, "running \"ldconfig -r %s\"", handle->root); _alpm_ldconfig(handle->root); } return(0); } /* vim: set ts=2 sw=2 noet: */