diff options
Diffstat (limited to 'lib/libalpm/remove.c')
| -rw-r--r-- | lib/libalpm/remove.c | 208 |
1 files changed, 151 insertions, 57 deletions
diff --git a/lib/libalpm/remove.c b/lib/libalpm/remove.c index cc9e289d..148cb863 100644 --- a/lib/libalpm/remove.c +++ b/lib/libalpm/remove.c @@ -22,8 +22,6 @@ * along with this program. If not, see <http://www.gnu.org/licenses/>. */ -#include "config.h" - #include <stdlib.h> #include <errno.h> #include <string.h> @@ -45,6 +43,14 @@ #include "handle.h" #include "conflict.h" +/** + * @brief Add a package removal action to the transaction. + * + * @param handle the context handle + * @param pkg the package to uninstall + * + * @return 0 on success, -1 on error + */ int SYMEXPORT alpm_remove_pkg(alpm_handle_t *handle, alpm_pkg_t *pkg) { const char *pkgname; @@ -75,6 +81,14 @@ int SYMEXPORT alpm_remove_pkg(alpm_handle_t *handle, alpm_pkg_t *pkg) return 0; } +/** + * @brief Add dependencies to the removal transaction for cascading. + * + * @param handle the context handle + * @param lp list of missing dependencies caused by the removal transaction + * + * @return 0 on success, -1 on error + */ static int remove_prepare_cascade(alpm_handle_t *handle, alpm_list_t *lp) { alpm_trans_t *trans = handle->trans; @@ -107,6 +121,12 @@ static int remove_prepare_cascade(alpm_handle_t *handle, alpm_list_t *lp) return 0; } +/** + * @brief Remove needed packages from the removal transaction. + * + * @param handle the context handle + * @param lp list of missing dependencies caused by the removal transaction + */ static void remove_prepare_keep_needed(alpm_handle_t *handle, alpm_list_t *lp) { alpm_trans_t *trans = handle->trans; @@ -137,12 +157,16 @@ static void remove_prepare_keep_needed(alpm_handle_t *handle, alpm_list_t *lp) } } -/** Transaction preparation for remove actions. +/** + * @brief Transaction preparation for remove actions. + * * This functions takes a pointer to a alpm_list_t which will be * filled with a list of alpm_depmissing_t* objects representing * the packages blocking the transaction. + * * @param handle the context handle * @param data a pointer to an alpm_list_t* to fill + * * @return 0 on success, -1 on error */ int _alpm_remove_prepare(alpm_handle_t *handle, alpm_list_t **data) @@ -211,12 +235,21 @@ int _alpm_remove_prepare(alpm_handle_t *handle, alpm_list_t **data) return 0; } +/** + * @brief Check if alpm can delete a file. + * + * @param handle the context handle + * @param file file to be removed + * @param skip_remove list of files that will not be removed + * + * @return 1 if the file can be deleted, 0 if it cannot be deleted + */ static int can_remove_file(alpm_handle_t *handle, const alpm_file_t *file, alpm_list_t *skip_remove) { char filepath[PATH_MAX]; - if(alpm_list_find_str(skip_remove, file->name)) { + if(alpm_list_find(skip_remove, file->name, _alpm_fnmatch)) { /* return success because we will never actually remove this file */ return 1; } @@ -237,10 +270,26 @@ static int can_remove_file(alpm_handle_t *handle, const alpm_file_t *file, return 1; } -/* Helper function for iterating through a package's file and deleting them - * Used by _alpm_remove_commit. */ -static int unlink_file(alpm_handle_t *handle, alpm_pkg_t *info, - const alpm_file_t *fileobj, alpm_list_t *skip_remove, int nosave) +/** + * @brief Unlink a package file, backing it up if necessary. + * + * @note Helper function for iterating through a package's file and deleting + * them. + * @note Used by _alpm_remove_commit. + * + * @param handle the context handle + * @param oldpkg the package being removed + * @param newpkg the package replacing \a oldpkg + * @param fileobj file to remove + * @param skip_remove list of files that shouldn't be removed + * @param nosave whether files should be backed up + * + * @return 0 on success, -1 if there was an error unlinking the file, 1 if the + * file was skipped or did not exist + */ +static int unlink_file(alpm_handle_t *handle, alpm_pkg_t *oldpkg, + alpm_pkg_t *newpkg, const alpm_file_t *fileobj, alpm_list_t *skip_remove, + int nosave) { struct stat buf; char file[PATH_MAX]; @@ -250,7 +299,7 @@ static int unlink_file(alpm_handle_t *handle, alpm_pkg_t *info, /* check the remove skip list before removing the file. * see the big comment block in db_find_fileconflicts() for an * explanation. */ - if(alpm_list_find_str(skip_remove, fileobj->name)) { + if(alpm_list_find(skip_remove, fileobj->name, _alpm_fnmatch)) { _alpm_log(handle, ALPM_LOG_DEBUG, "%s is in skip_remove, skipping removal\n", file); return 1; @@ -274,6 +323,10 @@ static int unlink_file(alpm_handle_t *handle, alpm_pkg_t *info, } else if(files < 0) { _alpm_log(handle, ALPM_LOG_DEBUG, "keeping directory %s (could not count files)\n", file); + } else if(newpkg && _alpm_filelist_contains(alpm_pkg_get_files(newpkg), + fileobj->name)) { + _alpm_log(handle, ALPM_LOG_DEBUG, + "keeping directory %s (in new package)\n", file); } else { /* one last check- does any other package own this file? */ alpm_list_t *local, *local_pkgs; @@ -285,7 +338,8 @@ static int unlink_file(alpm_handle_t *handle, alpm_pkg_t *info, /* we duplicated the package when we put it in the removal list, so we * so we can't use direct pointer comparison here. */ - if(_alpm_pkg_cmp(info, local_pkg) == 0) { + if(oldpkg->name_hash == local_pkg->name_hash + && strcmp(oldpkg->name, local_pkg->name) == 0) { continue; } filelist = alpm_pkg_get_files(local_pkg); @@ -308,7 +362,7 @@ static int unlink_file(alpm_handle_t *handle, alpm_pkg_t *info, } } else { /* if the file needs backup and has been modified, back it up to .pacsave */ - alpm_backup_t *backup = _alpm_needbackup(fileobj->name, info); + alpm_backup_t *backup = _alpm_needbackup(fileobj->name, oldpkg); if(backup) { if(nosave) { _alpm_log(handle, ALPM_LOG_DEBUG, "transaction is set to NOSAVE, not backing up '%s'\n", file); @@ -350,38 +404,28 @@ static int unlink_file(alpm_handle_t *handle, alpm_pkg_t *info, return 0; } -int _alpm_remove_single_package(alpm_handle_t *handle, +/** + * @brief Remove a package's files, optionally skipping its replacement's + * files. + * + * @param handle the context handle + * @param oldpkg package to remove + * @param newpkg package to replace \a oldpkg (optional) + * @param targ_count current index within the transaction (1-based) + * @param pkg_count the number of packages affected by the transaction + * + * @return 0 on success, -1 if alpm lacks permission to delete some of the + * files, >0 the number of files alpm was unable to delete + */ +static int remove_package_files(alpm_handle_t *handle, alpm_pkg_t *oldpkg, alpm_pkg_t *newpkg, size_t targ_count, size_t pkg_count) { alpm_list_t *skip_remove; - size_t filenum = 0, position = 0; - const char *pkgname = oldpkg->name; - const char *pkgver = oldpkg->version; alpm_filelist_t *filelist; size_t i; - - if(newpkg) { - _alpm_log(handle, ALPM_LOG_DEBUG, "removing old package first (%s-%s)\n", - pkgname, pkgver); - } else { - EVENT(handle, ALPM_EVENT_REMOVE_START, oldpkg, NULL); - _alpm_log(handle, ALPM_LOG_DEBUG, "removing package %s-%s\n", - pkgname, pkgver); - - /* run the pre-remove scriptlet if it exists */ - if(alpm_pkg_has_scriptlet(oldpkg) && - !(handle->trans->flags & ALPM_TRANS_FLAG_NOSCRIPTLET)) { - char *scriptlet = _alpm_local_db_pkgpath(handle->db_local, - oldpkg, "install"); - _alpm_runscriptlet(handle, scriptlet, "pre_remove", pkgver, NULL, 0); - free(scriptlet); - } - } - - if(handle->trans->flags & ALPM_TRANS_FLAG_DBONLY) { - goto db; - } + int err = 0; + int nosave = handle->trans->flags & ALPM_TRANS_FLAG_NOSAVE; if(newpkg) { alpm_filelist_t *newfiles; @@ -412,54 +456,100 @@ int _alpm_remove_single_package(alpm_handle_t *handle, alpm_file_t *file = filelist->files + i; if(!can_remove_file(handle, file, skip_remove)) { _alpm_log(handle, ALPM_LOG_DEBUG, - "not removing package '%s', can't remove all files\n", pkgname); + "not removing package '%s', can't remove all files\n", + oldpkg->name); + FREELIST(skip_remove); RET_ERR(handle, ALPM_ERR_PKG_CANT_REMOVE, -1); } - filenum++; } - _alpm_log(handle, ALPM_LOG_DEBUG, "removing %ld files\n", (unsigned long)filenum); + _alpm_log(handle, ALPM_LOG_DEBUG, "removing %zd files\n", filelist->count); if(!newpkg) { /* init progress bar, but only on true remove transactions */ - PROGRESS(handle, ALPM_PROGRESS_REMOVE_START, pkgname, 0, + PROGRESS(handle, ALPM_PROGRESS_REMOVE_START, oldpkg->name, 0, pkg_count, targ_count); } /* iterate through the list backwards, unlinking files */ for(i = filelist->count; i > 0; i--) { alpm_file_t *file = filelist->files + i - 1; - int percent; - /* TODO: check return code and handle accordingly */ - unlink_file(handle, oldpkg, file, skip_remove, - handle->trans->flags & ALPM_TRANS_FLAG_NOSAVE); + if(unlink_file(handle, oldpkg, newpkg, file, skip_remove, nosave) < 0) { + err++; + } if(!newpkg) { /* update progress bar after each file */ - percent = (position * 100) / filenum; - PROGRESS(handle, ALPM_PROGRESS_REMOVE_START, pkgname, + int percent = ((filelist->count - i) * 100) / filelist->count; + PROGRESS(handle, ALPM_PROGRESS_REMOVE_START, oldpkg->name, percent, pkg_count, targ_count); } - position++; } FREELIST(skip_remove); if(!newpkg) { /* set progress to 100% after we finish unlinking files */ - PROGRESS(handle, ALPM_PROGRESS_REMOVE_START, pkgname, 100, + PROGRESS(handle, ALPM_PROGRESS_REMOVE_START, oldpkg->name, 100, pkg_count, targ_count); + } + + return err; +} + +/** + * @brief Remove a package from the filesystem. + * + * @param handle the context handle + * @param oldpkg package to remove + * @param newpkg package to replace \a oldpkg (optional) + * @param targ_count current index within the transaction (1-based) + * @param pkg_count the number of packages affected by the transaction + * + * @return 0 + */ +int _alpm_remove_single_package(alpm_handle_t *handle, + alpm_pkg_t *oldpkg, alpm_pkg_t *newpkg, + size_t targ_count, size_t pkg_count) +{ + const char *pkgname = oldpkg->name; + const char *pkgver = oldpkg->version; - /* run the post-remove script if it exists */ + if(newpkg) { + _alpm_log(handle, ALPM_LOG_DEBUG, "removing old package first (%s-%s)\n", + pkgname, pkgver); + } else { + EVENT(handle, ALPM_EVENT_REMOVE_START, oldpkg, NULL); + _alpm_log(handle, ALPM_LOG_DEBUG, "removing package %s-%s\n", + pkgname, pkgver); + + /* run the pre-remove scriptlet if it exists */ if(alpm_pkg_has_scriptlet(oldpkg) && !(handle->trans->flags & ALPM_TRANS_FLAG_NOSCRIPTLET)) { char *scriptlet = _alpm_local_db_pkgpath(handle->db_local, oldpkg, "install"); - _alpm_runscriptlet(handle, scriptlet, "post_remove", pkgver, NULL, 0); + _alpm_runscriptlet(handle, scriptlet, "pre_remove", pkgver, NULL, 0); free(scriptlet); } } -db: + if(!(handle->trans->flags & ALPM_TRANS_FLAG_DBONLY)) { + /* TODO check returned errors if any */ + remove_package_files(handle, oldpkg, newpkg, targ_count, pkg_count); + } + + /* run the post-remove script if it exists */ + if(!newpkg && alpm_pkg_has_scriptlet(oldpkg) && + !(handle->trans->flags & ALPM_TRANS_FLAG_NOSCRIPTLET)) { + char *scriptlet = _alpm_local_db_pkgpath(handle->db_local, + oldpkg, "install"); + _alpm_runscriptlet(handle, scriptlet, "post_remove", pkgver, NULL, 0); + free(scriptlet); + } + + if(!newpkg) { + EVENT(handle, ALPM_EVENT_REMOVE_DONE, oldpkg, NULL); + } + /* remove the package from the database */ _alpm_log(handle, ALPM_LOG_DEBUG, "removing database entry '%s'\n", pkgname); if(_alpm_local_db_remove(handle->db_local, oldpkg) == -1) { @@ -472,14 +562,18 @@ db: pkgname); } - if(!newpkg) { - /* TODO: awesome! we're passing invalid pointers. */ - EVENT(handle, ALPM_EVENT_REMOVE_DONE, oldpkg, NULL); - } - + /* TODO: useful return values */ return 0; } +/** + * @brief Remove packages in the current transaction. + * + * @param handle the context handle + * @param run_ldconfig whether to run ld_config after removing the packages + * + * @return 0 on success, -1 if errors occurred while removing files + */ int _alpm_remove_packages(alpm_handle_t *handle, int run_ldconfig) { alpm_list_t *targ; |