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-rw-r--r--src/main/help.c325
1 files changed, 325 insertions, 0 deletions
diff --git a/src/main/help.c b/src/main/help.c
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--- /dev/null
+++ b/src/main/help.c
@@ -0,0 +1,325 @@
+/*
+ * dpkg - main program for package management
+ * help.c - various helper routines
+ *
+ * Copyright © 1995 Ian Jackson <ijackson@chiark.greenend.org.uk>
+ * Copyright © 2007-2015 Guillem Jover <guillem@debian.org>
+ *
+ * This 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 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, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <config.h>
+#include <compat.h>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <errno.h>
+#include <string.h>
+#include <unistd.h>
+#include <stdlib.h>
+
+#include <dpkg/i18n.h>
+#include <dpkg/dpkg.h>
+#include <dpkg/dpkg-db.h>
+#include <dpkg/path.h>
+#include <dpkg/file.h>
+#include <dpkg/command.h>
+#include <dpkg/db-fsys.h>
+
+#include "main.h"
+
+const char *const statusstrings[]= {
+ [PKG_STAT_NOTINSTALLED] = N_("not installed"),
+ [PKG_STAT_CONFIGFILES] = N_("not installed but configs remain"),
+ [PKG_STAT_HALFINSTALLED] = N_("broken due to failed removal or installation"),
+ [PKG_STAT_UNPACKED] = N_("unpacked but not configured"),
+ [PKG_STAT_HALFCONFIGURED] = N_("broken due to postinst failure"),
+ [PKG_STAT_TRIGGERSAWAITED] = N_("awaiting trigger processing by another package"),
+ [PKG_STAT_TRIGGERSPENDING] = N_("triggered"),
+ [PKG_STAT_INSTALLED] = N_("installed")
+};
+
+struct fsys_namenode *
+namenodetouse(struct fsys_namenode *namenode, struct pkginfo *pkg,
+ struct pkgbin *pkgbin)
+{
+ struct fsys_namenode *fnn;
+
+ if (!namenode->divert)
+ return namenode;
+
+ debug(dbg_eachfile, "namenodetouse namenode='%s' pkg=%s",
+ namenode->name, pkgbin_name(pkg, pkgbin, pnaw_always));
+
+ fnn = (namenode->divert->useinstead && namenode->divert->pkgset != pkg->set)
+ ? namenode->divert->useinstead : namenode;
+
+ debug(dbg_eachfile,
+ "namenodetouse ... useinstead=%s camefrom=%s pkg=%s return %s",
+ namenode->divert->useinstead ? namenode->divert->useinstead->name : "<none>",
+ namenode->divert->camefrom ? namenode->divert->camefrom->name : "<none>",
+ namenode->divert->pkgset ? namenode->divert->pkgset->name : "<none>",
+ fnn->name);
+
+ return fnn;
+}
+
+/**
+ * Verify that some programs can be found in the PATH.
+ */
+void checkpath(void) {
+ static const char *const prog_list[] = {
+ DPKG_DEFAULT_SHELL,
+ RM,
+ TAR,
+ DIFF,
+ BACKEND,
+ /* macOS uses dyld (Mach-O) instead of ld.so (ELF), and does not have
+ * an ldconfig. */
+#if defined(__APPLE__) && defined(__MACH__)
+ "update_dyld_shared_cache",
+#elif defined(__GLIBC__) || defined(__UCLIBC__) || \
+ defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__)
+ "ldconfig",
+#endif
+#if BUILD_START_STOP_DAEMON
+ "start-stop-daemon",
+#endif
+ NULL
+ };
+
+ const char *const *prog;
+ int warned= 0;
+
+ for (prog = prog_list; *prog; prog++) {
+ if (!command_in_path(*prog)) {
+ warning(_("'%s' not found in PATH or not executable"), *prog);
+ warned++;
+ }
+ }
+
+ if (warned)
+ forcibleerr(FORCE_BAD_PATH,
+ P_("%d expected program not found in PATH or not executable\n%s",
+ "%d expected programs not found in PATH or not executable\n%s",
+ warned),
+ warned, _("Note: root's PATH should usually contain "
+ "/usr/local/sbin, /usr/sbin and /sbin"));
+}
+
+bool
+ignore_depends(const struct pkginfo *pkg)
+{
+ struct pkg_list *id;
+ for (id= ignoredependss; id; id= id->next)
+ if (id->pkg == pkg)
+ return true;
+ return false;
+}
+
+static bool
+ignore_depends_possi(struct deppossi *possi)
+{
+ struct deppossi_pkg_iterator *possi_iter;
+ struct pkginfo *pkg;
+
+ possi_iter = deppossi_pkg_iter_new(possi, wpb_installed);
+ while ((pkg = deppossi_pkg_iter_next(possi_iter))) {
+ if (ignore_depends(pkg)) {
+ deppossi_pkg_iter_free(possi_iter);
+ return true;
+ }
+ }
+ deppossi_pkg_iter_free(possi_iter);
+
+ return false;
+}
+
+bool
+force_depends(struct deppossi *possi)
+{
+ return in_force(FORCE_DEPENDS) ||
+ ignore_depends_possi(possi) ||
+ ignore_depends(possi->up->up);
+}
+
+bool
+force_breaks(struct deppossi *possi)
+{
+ return in_force(FORCE_BREAKS) ||
+ ignore_depends_possi(possi) ||
+ ignore_depends(possi->up->up);
+}
+
+bool
+force_conflicts(struct deppossi *possi)
+{
+ return in_force(FORCE_CONFLICTS);
+}
+
+void clear_istobes(void) {
+ struct pkg_hash_iter *iter;
+ struct pkginfo *pkg;
+
+ iter = pkg_hash_iter_new();
+ while ((pkg = pkg_hash_iter_next_pkg(iter)) != NULL) {
+ ensure_package_clientdata(pkg);
+ pkg->clientdata->istobe = PKG_ISTOBE_NORMAL;
+ pkg->clientdata->replacingfilesandsaid= 0;
+ }
+ pkg_hash_iter_free(iter);
+}
+
+/*
+ * Returns true if the directory contains conffiles belonging to pkg,
+ * false otherwise.
+ */
+bool
+dir_has_conffiles(struct fsys_namenode *file, struct pkginfo *pkg)
+{
+ struct conffile *conff;
+ size_t namelen;
+
+ debug(dbg_veryverbose, "dir_has_conffiles '%s' (from %s)", file->name,
+ pkg_name(pkg, pnaw_always));
+ namelen = strlen(file->name);
+ for (conff= pkg->installed.conffiles; conff; conff= conff->next) {
+ if (conff->obsolete || conff->remove_on_upgrade)
+ continue;
+ if (strncmp(file->name, conff->name, namelen) == 0 &&
+ strlen(conff->name) > namelen && conff->name[namelen] == '/') {
+ debug(dbg_veryverbose, "directory %s has conffile %s from %s",
+ file->name, conff->name, pkg_name(pkg, pnaw_always));
+ return true;
+ }
+ }
+ debug(dbg_veryverbose, "dir_has_conffiles no");
+ return false;
+}
+
+/*
+ * Returns true if the file is used by packages other than pkg,
+ * false otherwise.
+ */
+bool
+dir_is_used_by_others(struct fsys_namenode *file, struct pkginfo *pkg)
+{
+ struct fsys_node_pkgs_iter *iter;
+ struct pkginfo *other_pkg;
+
+ debug(dbg_veryverbose, "dir_is_used_by_others '%s' (except %s)", file->name,
+ pkg ? pkg_name(pkg, pnaw_always) : "<none>");
+
+ iter = fsys_node_pkgs_iter_new(file);
+ while ((other_pkg = fsys_node_pkgs_iter_next(iter))) {
+ debug(dbg_veryverbose, "dir_is_used_by_others considering %s ...",
+ pkg_name(other_pkg, pnaw_always));
+ if (other_pkg == pkg)
+ continue;
+
+ fsys_node_pkgs_iter_free(iter);
+ debug(dbg_veryverbose, "dir_is_used_by_others yes");
+ return true;
+ }
+ fsys_node_pkgs_iter_free(iter);
+
+ debug(dbg_veryverbose, "dir_is_used_by_others no");
+ return false;
+}
+
+/*
+ * Returns true if the file is used by pkg, false otherwise.
+ */
+bool
+dir_is_used_by_pkg(struct fsys_namenode *file, struct pkginfo *pkg,
+ struct fsys_namenode_list *list)
+{
+ struct fsys_namenode_list *node;
+ size_t namelen;
+
+ debug(dbg_veryverbose, "dir_is_used_by_pkg '%s' (by %s)",
+ file->name, pkg ? pkg_name(pkg, pnaw_always) : "<none>");
+
+ namelen = strlen(file->name);
+
+ for (node = list; node; node = node->next) {
+ debug(dbg_veryverbose, "dir_is_used_by_pkg considering %s ...",
+ node->namenode->name);
+
+ if (strncmp(file->name, node->namenode->name, namelen) == 0 &&
+ strlen(node->namenode->name) > namelen &&
+ node->namenode->name[namelen] == '/') {
+ debug(dbg_veryverbose, "dir_is_used_by_pkg yes");
+ return true;
+ }
+ }
+
+ debug(dbg_veryverbose, "dir_is_used_by_pkg no");
+
+ return false;
+}
+
+/**
+ * Mark a conffile as obsolete.
+ *
+ * @param pkg The package owning the conffile.
+ * @param namenode The namenode for the obsolete conffile.
+ */
+void
+conffile_mark_obsolete(struct pkginfo *pkg, struct fsys_namenode *namenode)
+{
+ struct conffile *conff;
+
+ for (conff = pkg->installed.conffiles; conff; conff = conff->next) {
+ if (strcmp(conff->name, namenode->name) == 0) {
+ debug(dbg_conff, "marking %s conffile %s as obsolete",
+ pkg_name(pkg, pnaw_always), conff->name);
+ conff->obsolete = true;
+ return;
+ }
+ }
+}
+
+/**
+ * Mark all package conffiles as old.
+ *
+ * @param pkg The package owning the conffiles.
+ */
+void
+pkg_conffiles_mark_old(struct pkginfo *pkg)
+{
+ const struct conffile *conff;
+
+ for (conff = pkg->installed.conffiles; conff; conff = conff->next) {
+ struct fsys_namenode *namenode;
+
+ namenode = fsys_hash_find_node(conff->name, FHFF_NONE); /* XXX */
+ namenode->flags |= FNNF_OLD_CONFF;
+ if (!namenode->oldhash)
+ namenode->oldhash = conff->hash;
+ debug(dbg_conffdetail, "%s '%s' namenode '%s' flags %o", __func__,
+ conff->name, namenode->name, namenode->flags);
+ }
+}
+
+void
+log_action(const char *action, struct pkginfo *pkg, struct pkgbin *pkgbin)
+{
+ log_message("%s %s %s %s", action, pkgbin_name(pkg, pkgbin, pnaw_always),
+ versiondescribe_c(&pkg->installed.version, vdew_nonambig),
+ versiondescribe_c(&pkg->available.version, vdew_nonambig));
+ statusfd_send("processing: %s: %s", action,
+ pkgbin_name(pkg, pkgbin, pnaw_nonambig));
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-25 21:25:33 +0000