int
clearselections(const char *const *argv)
{
enum modstatdb_rw msdbflags;
struct pkgiterator *it;
struct pkginfo *pkg;
if (*argv)
badusage(_("--%s takes no arguments"), cipaction->olong);
if (f_noact)
msdbflags = msdbrw_readonly;
else
msdbflags = msdbrw_write;
modstatdb_open(msdbflags);
pkg_infodb_upgrade();
it = pkg_db_iter_new();
while ((pkg = pkg_db_iter_next_pkg(it))) {
if (!pkg->installed.essential)
pkg_set_want(pkg, PKG_WANT_DEINSTALL);
}
pkg_db_iter_free(it);
modstatdb_shutdown();
return 0;
}
void
pkg_spec_iter_init(struct pkg_spec *ps)
{
if (ps->name_is_pattern)
ps->pkg_iter = pkg_db_iter_new();
else
ps->pkg_next = &pkg_db_find_set(ps->name)->pkg;
}
void clear_istobes(void) {
struct pkgiterator *iter;
struct pkginfo *pkg;
iter = pkg_db_iter_new();
while ((pkg = pkg_db_iter_next_pkg(iter)) != NULL) {
ensure_package_clientdata(pkg);
pkg->clientdata->istobe = PKG_ISTOBE_NORMAL;
pkg->clientdata->replacingfilesandsaid= 0;
}
pkg_db_iter_free(iter);
}
void clear_istobes(void) {
struct pkgiterator *it;
struct pkginfo *pkg;
it = pkg_db_iter_new();
while ((pkg = pkg_db_iter_next_pkg(it)) != NULL) {
ensure_package_clientdata(pkg);
pkg->clientdata->istobe= itb_normal;
pkg->clientdata->replacingfilesandsaid= 0;
}
pkg_db_iter_free(it);
}
bool
findbreakcycle(struct pkginfo *pkg)
{
struct pkgiterator *iter;
struct pkginfo *tpkg;
/* Clear the visited flag of all packages before we traverse them. */
iter = pkg_db_iter_new();
while ((tpkg = pkg_db_iter_next(iter))) {
tpkg->clientdata->color = white;
}
pkg_db_iter_free(iter);
return findbreakcyclerecursive(pkg, NULL);
}
/**
* Initialize a package array from the package database.
*
* @param a The array to initialize.
*/
void
pkg_array_init_from_db(struct pkg_array *a)
{
struct pkgiterator *it;
struct pkginfo *pkg;
int i;
a->n_pkgs = pkg_db_count_pkg();
a->pkgs = m_malloc(sizeof(a->pkgs[0]) * a->n_pkgs);
it = pkg_db_iter_new();
for (i = 0; (pkg = pkg_db_iter_next_pkg(it)); i++)
a->pkgs[i] = pkg;
pkg_db_iter_free(it);
assert(i == a->n_pkgs);
}
static int
arch_remove(const char *const *argv)
{
const char *archname = *argv++;
struct dpkg_arch *arch;
struct pkgiterator *iter;
struct pkginfo *pkg;
if (archname == NULL || *argv)
badusage(_("--%s takes exactly one argument"), cipaction->olong);
modstatdb_open(msdbrw_readonly);
arch = dpkg_arch_find(archname);
if (arch->type != DPKG_ARCH_FOREIGN) {
warning(_("cannot remove non-foreign architecture '%s'"), arch->name);
return 0;
}
/* Check if it's safe to remove the architecture from the db. */
iter = pkg_db_iter_new();
while ((pkg = pkg_db_iter_next_pkg(iter))) {
if (pkg->status < PKG_STAT_HALFINSTALLED)
continue;
if (pkg->installed.arch == arch) {
if (fc_architecture)
warning(_("removing architecture '%s' currently in use by database"),
arch->name);
else
ohshit(_("cannot remove architecture '%s' currently in use by the database"),
arch->name);
break;
}
}
pkg_db_iter_free(iter);
dpkg_arch_unmark(arch);
dpkg_arch_save_list();
modstatdb_shutdown();
return 0;
}
void clearselections(const char *const *argv)
{
struct pkgiterator *it;
struct pkginfo *pkg;
if (*argv)
badusage(_("--%s takes no arguments"), cipaction->olong);
modstatdb_init(admindir, msdbrw_write);
it = pkg_db_iter_new();
while ((pkg = pkg_db_iter_next(it))) {
if (!pkg->installed.essential)
pkg->want = want_deinstall;
}
pkg_db_iter_free(it);
modstatdb_shutdown();
}
int
audit(const char *const *argv)
{
const struct badstatinfo *bsi;
bool head_running = false;
enum modstatdb_rw msdb_status;
if (*argv)
badusage(_("--%s takes no arguments"), cipaction->olong);
msdb_status = modstatdb_open(msdbrw_readonly);
pkg_infodb_init(msdb_status);
for (bsi= badstatinfos; bsi->yesno; bsi++) {
struct pkgiterator *it;
struct pkginfo *pkg;
bool head = false;
it = pkg_db_iter_new();
while ((pkg = pkg_db_iter_next_pkg(it))) {
if (!bsi->yesno(pkg,bsi)) continue;
if (!head_running) {
if (modstatdb_is_locked())
puts(_(
"Another process has locked the database for writing, and might currently be\n"
"modifying it, some of the following problems might just be due to that.\n"));
head_running = true;
}
if (!head) {
fputs(gettext(bsi->explanation),stdout);
head = true;
}
describebriefly(pkg);
}
pkg_db_iter_free(it);
if (head) putchar('\n');
}
m_output(stdout, _("<standard output>"));
return 0;
}
static void
enqueue_pending(void)
{
struct pkgiterator *it;
struct pkginfo *pkg;
it = pkg_db_iter_new();
while ((pkg = pkg_db_iter_next_pkg(it)) != NULL) {
switch (cipaction->arg_int) {
case act_configure:
if (!(pkg->status == stat_unpacked ||
pkg->status == stat_halfconfigured ||
pkg->trigpend_head))
continue;
if (pkg->want != want_install)
continue;
break;
case act_triggers:
if (!pkg->trigpend_head)
continue;
if (pkg->want != want_install)
continue;
break;
case act_remove:
case act_purge:
if (pkg->want != want_purge) {
if (pkg->want != want_deinstall)
continue;
if (pkg->status == stat_configfiles)
continue;
}
if (pkg->status == stat_notinstalled)
continue;
break;
default:
internerr("unknown action '%d'", cipaction->arg_int);
}
enqueue_package(pkg);
}
pkg_db_iter_free(it);
}
/*
* cstatus might be msdbrw_readonly if we're in --no-act mode, in which
* case we don't write out all of the interest files etc. but we do
* invent all of the activations for our own benefit.
*/
static void
trig_transitional_activate(enum modstatdb_rw cstatus)
{
struct pkgiterator *iter;
struct pkginfo *pkg;
iter = pkg_db_iter_new();
while ((pkg = pkg_db_iter_next_pkg(iter))) {
if (pkg->status <= PKG_STAT_HALFINSTALLED)
continue;
debug(dbg_triggersdetail, "trig_transitional_activate %s %s",
pkg_name(pkg, pnaw_always),
pkg_status_name(pkg));
pkg->trigpend_head = NULL;
trig_parse_ci(pkg_infodb_get_file(pkg, &pkg->installed,
TRIGGERSCIFILE),
cstatus >= msdbrw_write ?
transitional_interest_callback :
transitional_interest_callback_ro, NULL,
pkg, &pkg->installed);
/* Ensure we're not creating incoherent data that can't
* be written down. This should never happen in theory but
* can happen if you restore an old status file that is
* not in sync with the infodb files. */
if (pkg->status < PKG_STAT_TRIGGERSAWAITED)
continue;
if (pkg->trigaw.head)
pkg_set_status(pkg, PKG_STAT_TRIGGERSAWAITED);
else if (pkg->trigpend_head)
pkg_set_status(pkg, PKG_STAT_TRIGGERSPENDING);
else
pkg_set_status(pkg, PKG_STAT_INSTALLED);
}
pkg_db_iter_free(iter);
if (cstatus >= msdbrw_write) {
modstatdb_checkpoint();
trig_file_interests_save();
}
}
/*
* cstatus might be msdbrw_readonly if we're in --no-act mode, in which
* case we don't write out all of the interest files etc. but we do
* invent all of the activations for our own benefit.
*/
static void
trig_transitional_activate(enum modstatdb_rw cstatus)
{
struct pkgiterator *it;
struct pkginfo *pkg;
/* Ensure we can use pkgadminfile() even when called at the very
* end of modstatdb_open when triggers/Unincorp is missing */
pkg_infodb_init(cstatus);
it = pkg_db_iter_new();
while ((pkg = pkg_db_iter_next_pkg(it))) {
if (pkg->status <= stat_halfinstalled)
continue;
debug(dbg_triggersdetail, "trig_transitional_activate %s %s",
pkg_describe(pkg, pdo_foreign),
statusinfos[pkg->status].name);
pkg->trigpend_head = NULL;
trig_parse_ci(pkgadminfile(pkg, &pkg->installed, TRIGGERSCIFILE),
cstatus >= msdbrw_write ?
transitional_interest_callback :
transitional_interest_callback_ro, NULL, pkg);
/* Ensure we're not creating incoherent data that can't
* be written down. This should never happen in theory but
* can happen if you restore an old status file that is
* not in sync with the infodb files. */
if (pkg->status < stat_triggersawaited)
continue;
pkg->status = pkg->trigaw.head ? stat_triggersawaited :
pkg->trigpend_head ? stat_triggerspending :
stat_installed;
}
pkg_db_iter_free(it);
if (cstatus >= msdbrw_write) {
modstatdb_checkpoint();
trig_file_interests_save();
}
}
/**
* Populate the deferred trigger queue.
*
* When dpkg is called with a specific set of packages to act on, we might
* have packages pending trigger processing. But because there are frontends
* that do not perform a final «dpkg --configure --pending» call (i.e. apt),
* the system is left in a state with packages not fully installed.
*
* We have to populate the deferred trigger queue from the entire package
* database, so that we might try to do opportunistic trigger processing
* when going through the deferred trigger queue, because a fixed apt will
* not request the necessary processing anyway.
*
* XXX: This can be removed once apt is fixed in the next stable release.
*/
void
trigproc_populate_deferred(void)
{
struct pkgiterator *iter;
struct pkginfo *pkg;
iter = pkg_db_iter_new();
while ((pkg = pkg_db_iter_next_pkg(iter))) {
if (!pkg->trigpend_head)
continue;
if (pkg->status != PKG_STAT_TRIGGERSAWAITED &&
pkg->status != PKG_STAT_TRIGGERSPENDING)
continue;
if (pkg->want != PKG_WANT_INSTALL)
continue;
trigproc_enqueue_deferred(pkg);
}
pkg_db_iter_free(iter);
}
int
clearselections(const char *const *argv)
{
struct pkgiterator *it;
struct pkginfo *pkg;
if (*argv)
badusage(_("--%s takes no arguments"), cipaction->olong);
modstatdb_open(msdbrw_write);
it = pkg_db_iter_new();
while ((pkg = pkg_db_iter_next_pkg(it))) {
if (!pkg->installed.essential)
pkg_set_want(pkg, want_deinstall);
}
pkg_db_iter_free(it);
modstatdb_shutdown();
return 0;
}
int
verify(const char *const *argv)
{
struct pkginfo *pkg;
int rc = 0;
modstatdb_open(msdbrw_readonly);
ensure_diversions();
if (!*argv) {
struct pkgiterator *it;
it = pkg_db_iter_new();
while ((pkg = pkg_db_iter_next_pkg(it)))
verify_package(pkg);
pkg_db_iter_free(it);
} else {
const char *thisarg;
while ((thisarg = *argv++)) {
pkg = dpkg_options_parse_pkgname(cipaction, thisarg);
if (pkg->status == PKG_STAT_NOTINSTALLED) {
notice(_("package '%s' is not installed"),
pkg_name(pkg, pnaw_nonambig));
rc = 1;
continue;
}
verify_package(pkg);
}
}
modstatdb_shutdown();
m_output(stdout, _("<standard output>"));
return rc;
}
/**
* Print a single package which:
* (a) is the target of one or more relevant predependencies.
* (b) has itself no unsatisfied pre-dependencies.
*
* If such a package is present output is the Packages file entry,
* which can be massaged as appropriate.
*
* Exit status:
* 0 = a package printed, OK
* 1 = no suitable package available
* 2 = error
*/
void predeppackage(const char *const *argv) {
static struct varbuf vb;
struct pkgiterator *it;
struct pkginfo *pkg = NULL, *startpkg, *trypkg;
struct dependency *dep;
struct deppossi *possi, *provider;
if (*argv)
badusage(_("--%s takes no arguments"), cipaction->olong);
modstatdb_init(admindir,msdbrw_readonly);
/* We use clientdata->istobe to detect loops. */
clear_istobes();
dep = NULL;
it = pkg_db_iter_new();
while (!dep && (pkg = pkg_db_iter_next(it))) {
/* Ignore packages user doesn't want. */
if (pkg->want != want_install)
continue;
/* Ignore packages not available. */
if (!pkg->files)
continue;
pkg->clientdata->istobe= itb_preinstall;
for (dep= pkg->available.depends; dep; dep= dep->next) {
if (dep->type != dep_predepends) continue;
if (depisok(dep, &vb, NULL, true))
continue;
/* This will leave dep non-NULL, and so exit the loop. */
break;
}
pkg->clientdata->istobe= itb_normal;
/* If dep is NULL we go and get the next package. */
}
pkg_db_iter_free(it);
if (!dep)
exit(1); /* Not found. */
assert(pkg);
startpkg= pkg;
pkg->clientdata->istobe= itb_preinstall;
/* OK, we have found an unsatisfied predependency.
* Now go and find the first thing we need to install, as a first step
* towards satisfying it. */
do {
/* We search for a package which would satisfy dep, and put it in pkg. */
for (possi = dep->list, pkg = NULL;
!pkg && possi;
possi=possi->next) {
trypkg= possi->ed;
if (trypkg->files && versionsatisfied(&trypkg->available,possi)) {
if (trypkg->clientdata->istobe == itb_normal) { pkg= trypkg; break; }
}
if (possi->verrel != dvr_none) continue;
for (provider=possi->ed->available.depended;
!pkg && provider;
provider=provider->next) {
if (provider->up->type != dep_provides) continue;
trypkg= provider->up->up;
if (!trypkg->files)
continue;
if (trypkg->clientdata->istobe == itb_normal) { pkg= trypkg; break; }
}
}
if (!pkg) {
varbufreset(&vb);
describedepcon(&vb,dep);
varbufaddc(&vb,0);
fprintf(stderr, _("dpkg: cannot see how to satisfy pre-dependency:\n %s\n"),vb.buf);
ohshit(_("cannot satisfy pre-dependencies for %.250s (wanted due to %.250s)"),
dep->up->name,startpkg->name);
}
pkg->clientdata->istobe= itb_preinstall;
for (dep= pkg->available.depends; dep; dep= dep->next) {
if (dep->type != dep_predepends) continue;
if (depisok(dep, &vb, NULL, true))
continue;
/* This will leave dep non-NULL, and so exit the loop. */
break;
}
} while (dep);
/* OK, we've found it - pkg has no unsatisfied pre-dependencies! */
writerecord(stdout, _("<standard output>"), pkg, &pkg->available);
m_output(stdout, _("<standard output>"));
}
void unpackchk(const char *const *argv) {
int totalcount, sects;
struct sectionentry *sectionentries, *se, **sep;
struct pkgiterator *it;
struct pkginfo *pkg;
const char *thissect;
char buf[20];
int width;
if (*argv)
badusage(_("--%s takes no arguments"), cipaction->olong);
modstatdb_init(admindir,msdbrw_readonly|msdbrw_noavail);
totalcount= 0;
sectionentries = NULL;
sects= 0;
it = pkg_db_iter_new();
while ((pkg = pkg_db_iter_next(it))) {
if (!yettobeunpacked(pkg, &thissect)) continue;
for (se= sectionentries; se && strcasecmp(thissect,se->name); se= se->next);
if (!se) {
se= nfmalloc(sizeof(struct sectionentry));
for (sep= §ionentries;
*sep && strcasecmp(thissect,(*sep)->name) > 0;
sep= &(*sep)->next);
se->name= thissect;
se->count= 0;
se->next= *sep;
*sep= se;
sects++;
}
se->count++; totalcount++;
}
pkg_db_iter_free(it);
if (totalcount == 0) exit(0);
if (totalcount <= 12) {
it = pkg_db_iter_new();
while ((pkg = pkg_db_iter_next(it))) {
if (!yettobeunpacked(pkg, NULL))
continue;
describebriefly(pkg);
}
pkg_db_iter_free(it);
} else if (sects <= 12) {
for (se= sectionentries; se; se= se->next) {
sprintf(buf,"%d",se->count);
printf(_(" %d in %s: "),se->count,se->name);
width= 70-strlen(se->name)-strlen(buf);
while (width > 59) { putchar(' '); width--; }
it = pkg_db_iter_new();
while ((pkg = pkg_db_iter_next(it))) {
if (!yettobeunpacked(pkg,&thissect)) continue;
if (strcasecmp(thissect,se->name)) continue;
width -= strlen(pkg->name); width--;
if (width < 4) { printf(" ..."); break; }
printf(" %s",pkg->name);
}
pkg_db_iter_free(it);
putchar('\n');
}
} else {
printf(P_(" %d package, from the following section:",
" %d packages, from the following sections:", totalcount),
totalcount);
width= 0;
for (se= sectionentries; se; se= se->next) {
sprintf(buf,"%d",se->count);
width -= (6 + strlen(se->name) + strlen(buf));
if (width < 0) { putchar('\n'); width= 73 - strlen(se->name) - strlen(buf); }
printf(" %s (%d)",se->name,se->count);
}
putchar('\n');
}
m_output(stdout, _("<standard output>"));
}
/*
* Returns package we're to give up on.
*/
static struct pkginfo *
check_trigger_cycle(struct pkginfo *processing_now)
{
struct trigcyclenode *tcn;
struct trigcycleperpkg *tcpp, *tortoise_pkg;
struct trigpend *tortoise_trig;
struct pkgiterator *iter;
struct pkginfo *pkg, *giveup;
const char *sep;
debug(dbg_triggers, "check_triggers_cycle pnow=%s",
pkg_name(processing_now, pnaw_always));
tcn = nfmalloc(sizeof(*tcn));
tcn->pkgs = NULL;
tcn->then_processed = processing_now;
iter = pkg_db_iter_new();
while ((pkg = pkg_db_iter_next_pkg(iter))) {
if (!pkg->trigpend_head)
continue;
tcpp = nfmalloc(sizeof(*tcpp));
tcpp->pkg = pkg;
tcpp->then_trigs = pkg->trigpend_head;
tcpp->next = tcn->pkgs;
tcn->pkgs = tcpp;
}
pkg_db_iter_free(iter);
if (!hare) {
debug(dbg_triggersdetail, "check_triggers_cycle pnow=%s first",
pkg_name(processing_now, pnaw_always));
tcn->next = NULL;
hare = tortoise = tcn;
return NULL;
}
tcn->next = NULL;
hare->next = tcn;
hare = tcn;
if (tortoise_advance)
tortoise = tortoise->next;
tortoise_advance = !tortoise_advance;
/* Now we compare hare to tortoise.
* We want to find a trigger pending in tortoise which is not in hare
* if we find such a thing we have proved that hare isn't a superset
* of tortoise and so that we haven't found a loop (yet). */
for (tortoise_pkg = tortoise->pkgs;
tortoise_pkg;
tortoise_pkg = tortoise_pkg->next) {
if (tortoise_not_in_hare(processing_now, tortoise_pkg))
return NULL;
}
/* Oh dear. hare is a superset of tortoise. We are making no
* progress. */
notice(_("cycle found while processing triggers:\n"
" chain of packages whose triggers are or may be responsible:"));
sep = " ";
for (tcn = tortoise; tcn; tcn = tcn->next) {
fprintf(stderr, "%s%s", sep,
pkg_name(tcn->then_processed, pnaw_nonambig));
sep = " -> ";
}
fprintf(stderr, _("\n" " packages' pending triggers which are"
" or may be unresolvable:\n"));
for (tortoise_pkg = tortoise->pkgs;
tortoise_pkg;
tortoise_pkg = tortoise_pkg->next) {
fprintf(stderr, " %s",
pkg_name(tortoise_pkg->pkg, pnaw_nonambig));
sep = ": ";
for (tortoise_trig = tortoise_pkg->then_trigs;
tortoise_trig;
tortoise_trig = tortoise_trig->next) {
fprintf(stderr, "%s%s", sep, tortoise_trig->name);
}
fprintf(stderr, "\n");
}
/* We give up on the _earliest_ package involved. */
giveup = tortoise->pkgs->pkg;
debug(dbg_triggers, "check_triggers_cycle pnow=%s giveup=%s",
pkg_name(processing_now, pnaw_always),
pkg_name(giveup, pnaw_always));
assert(giveup->status == PKG_STAT_TRIGGERSAWAITED ||
giveup->status == PKG_STAT_TRIGGERSPENDING);
pkg_set_status(giveup, PKG_STAT_HALFCONFIGURED);
modstatdb_note(giveup);
print_error_perpackage(_("triggers looping, abandoned"),
pkg_name(giveup, pnaw_nonambig));
return giveup;
}
/**
* Print a single package which:
* (a) is the target of one or more relevant predependencies.
* (b) has itself no unsatisfied pre-dependencies.
*
* If such a package is present output is the Packages file entry,
* which can be massaged as appropriate.
*
* Exit status:
* 0 = a package printed, OK
* 1 = no suitable package available
* 2 = error
*/
int
predeppackage(const char *const *argv)
{
static struct varbuf vb;
struct pkgiterator *it;
struct pkginfo *pkg = NULL, *startpkg, *trypkg;
struct dependency *dep;
struct deppossi *possi, *provider;
if (*argv)
badusage(_("--%s takes no arguments"), cipaction->olong);
modstatdb_open(msdbrw_readonly | msdbrw_available_readonly);
/* We use clientdata->istobe to detect loops. */
clear_istobes();
dep = NULL;
it = pkg_db_iter_new();
while (!dep && (pkg = pkg_db_iter_next_pkg(it))) {
/* Ignore packages user doesn't want. */
if (pkg->want != PKG_WANT_INSTALL)
continue;
/* Ignore packages not available. */
if (!pkg->files)
continue;
pkg->clientdata->istobe = PKG_ISTOBE_PREINSTALL;
for (dep= pkg->available.depends; dep; dep= dep->next) {
if (dep->type != dep_predepends) continue;
if (depisok(dep, &vb, NULL, NULL, true))
continue;
/* This will leave dep non-NULL, and so exit the loop. */
break;
}
pkg->clientdata->istobe = PKG_ISTOBE_NORMAL;
/* If dep is NULL we go and get the next package. */
}
pkg_db_iter_free(it);
if (!dep)
return 1; /* Not found. */
assert(pkg);
startpkg= pkg;
pkg->clientdata->istobe = PKG_ISTOBE_PREINSTALL;
/* OK, we have found an unsatisfied predependency.
* Now go and find the first thing we need to install, as a first step
* towards satisfying it. */
do {
/* We search for a package which would satisfy dep, and put it in pkg. */
for (possi = dep->list, pkg = NULL;
!pkg && possi;
possi=possi->next) {
struct deppossi_pkg_iterator *possi_iter;
possi_iter = deppossi_pkg_iter_new(possi, wpb_available);
while (!pkg && (trypkg = deppossi_pkg_iter_next(possi_iter))) {
if (trypkg->files &&
trypkg->clientdata->istobe == PKG_ISTOBE_NORMAL &&
versionsatisfied(&trypkg->available, possi)) {
pkg = trypkg;
break;
}
for (provider = possi->ed->depended.available;
!pkg && provider;
provider = provider->next) {
if (provider->up->type != dep_provides)
continue;
if (!pkg_virtual_deppossi_satisfied(possi, provider))
continue;
trypkg = provider->up->up;
if (!trypkg->files)
continue;
if (trypkg->clientdata->istobe == PKG_ISTOBE_NORMAL) {
pkg = trypkg;
break;
}
}
}
deppossi_pkg_iter_free(possi_iter);
}
if (!pkg) {
varbuf_reset(&vb);
describedepcon(&vb,dep);
varbuf_end_str(&vb);
notice(_("cannot see how to satisfy pre-dependency:\n %s"), vb.buf);
ohshit(_("cannot satisfy pre-dependencies for %.250s (wanted due to %.250s)"),
pkgbin_name(dep->up, &dep->up->available, pnaw_nonambig),
pkgbin_name(startpkg, &startpkg->available, pnaw_nonambig));
}
pkg->clientdata->istobe = PKG_ISTOBE_PREINSTALL;
for (dep= pkg->available.depends; dep; dep= dep->next) {
if (dep->type != dep_predepends) continue;
if (depisok(dep, &vb, NULL, NULL, true))
continue;
/* This will leave dep non-NULL, and so exit the loop. */
break;
}
} while (dep);
/* OK, we've found it - pkg has no unsatisfied pre-dependencies! */
writerecord(stdout, _("<standard output>"), pkg, &pkg->available);
m_output(stdout, _("<standard output>"));
return 0;
}
/*
* Returns package we're to give up on.
*/
static struct pkginfo *
check_trigger_cycle(struct pkginfo *processing_now)
{
struct trigcyclenode *tcn;
struct trigcycleperpkg *tcpp, *tortoise_pkg;
struct trigpend *hare_trig, *tortoise_trig;
struct pkgiterator *it;
struct pkginfo *pkg, *giveup;
const char *sep;
debug(dbg_triggers, "check_triggers_cycle pnow=%s",
pkg_describe(processing_now, pdo_foreign));
tcn = nfmalloc(sizeof(*tcn));
tcn->pkgs = NULL;
tcn->then_processed = processing_now;
it = pkg_db_iter_new();
while ((pkg = pkg_db_iter_next_pkg(it))) {
if (!pkg->trigpend_head)
continue;
tcpp = nfmalloc(sizeof(*tcpp));
tcpp->pkg = pkg;
tcpp->then_trigs = pkg->trigpend_head;
tcpp->next = tcn->pkgs;
tcn->pkgs = tcpp;
}
pkg_db_iter_free(it);
if (!hare) {
debug(dbg_triggersdetail, "check_triggers_cycle pnow=%s first",
pkg_describe(processing_now, pdo_foreign));
tcn->next = NULL;
hare = tortoise = tcn;
return NULL;
}
tcn->next = NULL;
hare->next = tcn;
hare = tcn;
if (tortoise_advance)
tortoise = tortoise->next;
tortoise_advance = !tortoise_advance;
/* Now we compare hare to tortoise.
* We want to find a trigger pending in tortoise which is not in hare
* if we find such a thing we have proved that hare isn't a superset
* of tortoise and so that we haven't found a loop (yet). */
for (tortoise_pkg = tortoise->pkgs;
tortoise_pkg;
tortoise_pkg = tortoise_pkg->next) {
const char *pnow_name, *tortoise_name;
pnow_name = pkg_describe(processing_now, pdo_foreign);
tortoise_name = pkg_describe(tortoise_pkg->pkg, pdo_foreign);
debug(dbg_triggersdetail, "check_triggers_cycle pnow=%s tortoise=%s",
pnow_name, tortoise_name);
for (tortoise_trig = tortoise_pkg->then_trigs;
tortoise_trig;
tortoise_trig = tortoise_trig->next) {
debug(dbg_triggersdetail,
"check_triggers_cycle pnow=%s tortoise=%s"
" tortoisetrig=%s", pnow_name, tortoise_name,
tortoise_trig->name);
/* hare is now so we can just look up in the actual
* data. */
for (hare_trig = tortoise_pkg->pkg->trigpend_head;
hare_trig;
hare_trig = hare_trig->next) {
debug(dbg_triggersstupid,
"check_triggers_cycle pnow=%s tortoise=%s"
" tortoisetrig=%s haretrig=%s",
pnow_name, tortoise_name,
tortoise_trig->name, hare_trig->name);
if (!strcmp(hare_trig->name, tortoise_trig->name))
goto found_in_hare;
}
/* Not found in hare, yay! */
debug(dbg_triggersdetail,
"check_triggers_cycle pnow=%s tortoise=%s OK",
pnow_name, tortoise_name);
return NULL;
found_in_hare:;
}
}
/* Oh dear. hare is a superset of tortoise. We are making no
* progress. */
fprintf(stderr, _("%s: cycle found while processing triggers:\n chain of"
" packages whose triggers are or may be responsible:\n"),
dpkg_get_progname());
sep = " ";
for (tcn = tortoise; tcn; tcn = tcn->next) {
fprintf(stderr, "%s%s", sep,
pkg_describe(tcn->then_processed, pdo_foreign));
sep = " -> ";
}
fprintf(stderr, _("\n" " packages' pending triggers which are"
" or may be unresolvable:\n"));
for (tortoise_pkg = tortoise->pkgs;
tortoise_pkg;
tortoise_pkg = tortoise_pkg->next) {
fprintf(stderr, " %s",
pkg_describe(tortoise_pkg->pkg, pdo_foreign));
sep = ": ";
for (tortoise_trig = tortoise_pkg->then_trigs;
tortoise_trig;
tortoise_trig = tortoise_trig->next) {
fprintf(stderr, "%s%s", sep, tortoise_trig->name);
}
fprintf(stderr, "\n");
}
/* We give up on the _earliest_ package involved. */
giveup = tortoise->pkgs->pkg;
debug(dbg_triggers, "check_triggers_cycle pnow=%s giveup=%p",
pkg_describe(processing_now, pdo_foreign),
pkg_describe(giveup, pdo_foreign));
assert(giveup->status == stat_triggersawaited ||
giveup->status == stat_triggerspending);
giveup->status = stat_halfconfigured;
modstatdb_note(giveup);
print_error_perpackage(_("triggers looping, abandoned"),
pkg_describe(giveup, pdo_foreign));
return giveup;
}
void process_archive(const char *filename) {
static const struct tar_operations tf = {
.read = tarfileread,
.extract_file = tarobject,
.link = tarobject,
.symlink = tarobject,
.mkdir = tarobject,
.mknod = tarobject,
};
/* These need to be static so that we can pass their addresses to
* push_cleanup as arguments to the cu_xxx routines; if an error occurs
* we unwind the stack before processing the cleanup list, and these
* variables had better still exist ... */
static int p1[2];
static char *cidir = NULL;
static struct fileinlist *newconffiles, *newfileslist;
static enum pkgstatus oldversionstatus;
static struct varbuf depprobwhy;
static struct tarcontext tc;
int r, i;
pid_t pid;
struct pkgiterator *it;
struct pkginfo *pkg, *otherpkg;
char *cidirrest, *p;
char conffilenamebuf[MAXCONFFILENAME];
char *psize;
const char *pfilename;
struct fileinlist *newconff, **newconffileslastp;
struct fileinlist *cfile;
struct reversefilelistiter rlistit;
struct conffile *searchconff, **iconffileslastp, *newiconff;
struct dependency *dsearch, *newdeplist, **newdeplistlastp;
struct dependency *newdep, *dep, *providecheck;
struct deppossi *psearch, **newpossilastp, *possi, *newpossi, *pdep;
FILE *conff;
struct filenamenode *namenode;
struct stat stab, oldfs;
struct pkg_deconf_list *deconpil, *deconpiltemp;
struct pkginfo *fixbytrigaw;
cleanup_pkg_failed= cleanup_conflictor_failed= 0;
pfilename = summarize_filename(filename);
if (stat(filename,&stab)) ohshite(_("cannot access archive"));
/* We can't ‘tentatively-reassemble’ packages. */
if (!f_noact) {
if (!deb_reassemble(&filename, &pfilename))
return;
}
/* Verify the package. */
if (!f_nodebsig)
deb_verify(filename);
/* Get the control information directory. */
cidir = get_control_dir(cidir);
cidirrest = cidir + strlen(cidir);
push_cleanup(cu_cidir, ~0, NULL, 0, 2, (void *)cidir, (void *)cidirrest);
pid = subproc_fork();
if (pid == 0) {
cidirrest[-1] = '\0';
execlp(BACKEND, BACKEND, "--control", filename, cidir, NULL);
ohshite(_("unable to execute %s (%s)"),
_("package control information extraction"), BACKEND);
}
subproc_wait_check(pid, BACKEND " --control", 0);
/* We want to guarantee the extracted files are on the disk, so that the
* subsequent renames to the info database do not end up with old or zero
* length files in case of a system crash. As neither dpkg-deb nor tar do
* explicit fsync()s, we have to do them here.
* XXX: This could be avoided by switching to an internal tar extractor. */
dir_sync_contents(cidir);
strcpy(cidirrest,CONTROLFILE);
parsedb(cidir, pdb_parse_binary | pdb_ignorefiles | parsedb_force_flags(),
&pkg);
if (!pkg->files) {
pkg->files= nfmalloc(sizeof(struct filedetails));
pkg->files->next = NULL;
pkg->files->name = pkg->files->msdosname = pkg->files->md5sum = NULL;
}
/* Always nfmalloc. Otherwise, we may overwrite some other field (like
* md5sum). */
psize = nfmalloc(30);
sprintf(psize, "%jd", (intmax_t)stab.st_size);
pkg->files->size = psize;
if (cipaction->arg_int == act_avail) {
printf(_("Recorded info about %s from %s.\n"),
pkgbin_name(pkg, &pkg->available, pnaw_nonambig), pfilename);
pop_cleanup(ehflag_normaltidy);
return;
}
if (pkg->available.arch->type != arch_all &&
pkg->available.arch->type != arch_native)
forcibleerr(fc_architecture,
_("package architecture (%s) does not match system (%s)"),
pkg->available.arch->name, dpkg_arch_get(arch_native)->name);
for (deconpil= deconfigure;
deconpil;
deconpil= deconpiltemp) {
deconpiltemp= deconpil->next;
free(deconpil);
}
deconfigure = NULL;
clear_istobes();
if (!wanttoinstall(pkg)) {
pop_cleanup(ehflag_normaltidy);
return;
}
/* Check if anything is installed that we conflict with, or not installed
* that we need. */
pkg->clientdata->istobe= itb_installnew;
for (dsearch= pkg->available.depends; dsearch; dsearch= dsearch->next) {
switch (dsearch->type) {
case dep_conflicts:
/* Look for things we conflict with. */
check_conflict(dsearch, pkg, pfilename);
break;
case dep_breaks:
/* Look for things we break. */
check_breaks(dsearch, pkg, pfilename);
break;
case dep_provides:
/* Look for things that conflict with what we provide. */
for (psearch = dsearch->list->ed->depended.installed;
psearch;
psearch = psearch->rev_next) {
if (psearch->up->type != dep_conflicts)
continue;
check_conflict(psearch->up, pkg, pfilename);
}
break;
case dep_suggests:
case dep_recommends:
case dep_depends:
case dep_replaces:
case dep_enhances:
/* Ignore these here. */
break;
case dep_predepends:
if (!depisok(dsearch, &depprobwhy, NULL, &fixbytrigaw, true)) {
if (fixbytrigaw) {
while (fixbytrigaw->trigaw.head)
trigproc(fixbytrigaw->trigaw.head->pend);
} else {
varbuf_end_str(&depprobwhy);
fprintf(stderr, _("dpkg: regarding %s containing %s, pre-dependency problem:\n%s"),
pfilename, pkgbin_name(pkg, &pkg->available, pnaw_nonambig),
depprobwhy.buf);
if (!force_depends(dsearch->list))
ohshit(_("pre-dependency problem - not installing %.250s"),
pkgbin_name(pkg, &pkg->available, pnaw_nonambig));
warning(_("ignoring pre-dependency problem!"));
}
}
}
}
/* Look for things that conflict with us. */
for (psearch = pkg->set->depended.installed; psearch; psearch = psearch->rev_next) {
if (psearch->up->type != dep_conflicts) continue;
check_conflict(psearch->up, pkg, pfilename);
}
ensure_allinstfiles_available();
filesdbinit();
trig_file_interests_ensure();
if (pkg->status != stat_notinstalled && pkg->status != stat_configfiles) {
printf(_("Preparing to replace %s %s (using %s) ...\n"),
pkg_name(pkg, pnaw_nonambig),
versiondescribe(&pkg->installed.version,vdew_nonambig),
pfilename);
log_action("upgrade", pkg, &pkg->installed);
} else {
printf(_("Unpacking %s (from %s) ...\n"),
pkgbin_name(pkg, &pkg->available, pnaw_nonambig), pfilename);
log_action("install", pkg, &pkg->available);
}
if (f_noact) {
pop_cleanup(ehflag_normaltidy);
return;
}
/*
* OK, we're going ahead.
*/
trig_activate_packageprocessing(pkg);
strcpy(cidirrest, TRIGGERSCIFILE);
trig_parse_ci(cidir, NULL, trig_cicb_statuschange_activate, pkg, &pkg->available);
/* Read the conffiles, and copy the hashes across. */
newconffiles = NULL;
newconffileslastp = &newconffiles;
push_cleanup(cu_fileslist, ~0, NULL, 0, 0);
strcpy(cidirrest,CONFFILESFILE);
conff= fopen(cidir,"r");
if (conff) {
push_cleanup(cu_closestream, ehflag_bombout, NULL, 0, 1, (void *)conff);
while (fgets(conffilenamebuf,MAXCONFFILENAME-2,conff)) {
struct filepackages_iterator *iter;
p= conffilenamebuf + strlen(conffilenamebuf);
assert(p != conffilenamebuf);
if (p[-1] != '\n')
ohshit(_("name of conffile (starting `%.250s') is too long (>%d characters)"),
conffilenamebuf, MAXCONFFILENAME);
while (p > conffilenamebuf && isspace(p[-1])) --p;
if (p == conffilenamebuf) continue;
*p = '\0';
namenode= findnamenode(conffilenamebuf, 0);
namenode->oldhash= NEWCONFFILEFLAG;
newconff= newconff_append(&newconffileslastp, namenode);
/* Let's see if any packages have this file. If they do we
* check to see if they listed it as a conffile, and if they did
* we copy the hash across. Since (for plain file conffiles,
* which is the only kind we are supposed to have) there will
* only be one package which ‘has’ the file, this will usually
* mean we only look in the package which we're installing now.
* The ‘conffiles’ data in the status file is ignored when a
* package isn't also listed in the file ownership database as
* having that file. If several packages are listed as owning
* the file we pick one at random. */
searchconff = NULL;
iter = filepackages_iter_new(newconff->namenode);
while ((otherpkg = filepackages_iter_next(iter))) {
debug(dbg_conffdetail,
"process_archive conffile `%s' in package %s - conff ?",
newconff->namenode->name, pkg_name(otherpkg, pnaw_nonambig));
for (searchconff = otherpkg->installed.conffiles;
searchconff && strcmp(newconff->namenode->name, searchconff->name);
searchconff = searchconff->next)
debug(dbg_conffdetail,
"process_archive conffile `%s' in package %s - conff ? not `%s'",
newconff->namenode->name, pkg_name(otherpkg, pnaw_nonambig),
searchconff->name);
if (searchconff) {
debug(dbg_conff,
"process_archive conffile `%s' package=%s %s hash=%s",
newconff->namenode->name, pkg_name(otherpkg, pnaw_nonambig),
otherpkg == pkg ? "same" : "different!",
searchconff->hash);
if (otherpkg == pkg)
break;
}
}
filepackages_iter_free(iter);
if (searchconff) {
newconff->namenode->oldhash= searchconff->hash;
/* We don't copy ‘obsolete’; it's not obsolete in the new package. */
} else {
debug(dbg_conff,"process_archive conffile `%s' no package, no hash",
newconff->namenode->name);
}
newconff->namenode->flags |= fnnf_new_conff;
}
if (ferror(conff)) ohshite(_("read error in %.250s"),cidir);
pop_cleanup(ehflag_normaltidy); /* conff = fopen() */
if (fclose(conff)) ohshite(_("error closing %.250s"),cidir);
} else {
if (errno != ENOENT) ohshite(_("error trying to open %.250s"),cidir);
}
/* All the old conffiles are marked with a flag, so that we don't delete
* them if they seem to disappear completely. */
oldconffsetflags(pkg->installed.conffiles);
for (i = 0 ; i < cflict_index ; i++) {
oldconffsetflags(conflictor[i]->installed.conffiles);
}
oldversionstatus= pkg->status;
assert(oldversionstatus <= stat_installed);
debug(dbg_general,"process_archive oldversionstatus=%s",
statusstrings[oldversionstatus]);
if (oldversionstatus == stat_halfconfigured ||
oldversionstatus == stat_triggersawaited ||
oldversionstatus == stat_triggerspending ||
oldversionstatus == stat_installed) {
pkg_set_eflags(pkg, eflag_reinstreq);
pkg_set_status(pkg, stat_halfconfigured);
modstatdb_note(pkg);
push_cleanup(cu_prermupgrade, ~ehflag_normaltidy, NULL, 0, 1, (void *)pkg);
if (versioncompare(&pkg->available.version,
&pkg->installed.version) >= 0) /* Upgrade or reinstall */
maintainer_script_alternative(pkg, PRERMFILE, "pre-removal", cidir, cidirrest,
"upgrade", "failed-upgrade");
else /* Downgrade => no fallback */
maintainer_script_installed(pkg, PRERMFILE, "pre-removal", "upgrade",
versiondescribe(&pkg->available.version,
vdew_nonambig), NULL);
pkg_set_status(pkg, stat_unpacked);
oldversionstatus= stat_unpacked;
modstatdb_note(pkg);
}
for (deconpil= deconfigure; deconpil; deconpil= deconpil->next) {
struct pkginfo *removing = deconpil->pkg_removal;
if (removing)
printf(_("De-configuring %s, to allow removal of %s ...\n"),
pkg_name(deconpil->pkg, pnaw_nonambig),
pkg_name(removing, pnaw_nonambig));
else
printf(_("De-configuring %s ...\n"),
pkg_name(deconpil->pkg, pnaw_nonambig));
trig_activate_packageprocessing(deconpil->pkg);
pkg_set_status(deconpil->pkg, stat_halfconfigured);
modstatdb_note(deconpil->pkg);
/* This means that we *either* go and run postinst abort-deconfigure,
* *or* queue the package for later configure processing, depending
* on which error cleanup route gets taken. */
push_cleanup(cu_prermdeconfigure, ~ehflag_normaltidy,
ok_prermdeconfigure, ehflag_normaltidy,
3, (void*)deconpil->pkg, (void*)removing, (void*)pkg);
if (removing) {
maintainer_script_installed(deconpil->pkg, PRERMFILE, "pre-removal",
"deconfigure", "in-favour", pkg->set->name,
versiondescribe(&pkg->available.version,
vdew_nonambig),
"removing", removing->set->name,
versiondescribe(&removing->installed.version,
vdew_nonambig),
NULL);
} else {
maintainer_script_installed(deconpil->pkg, PRERMFILE, "pre-removal",
"deconfigure", "in-favour", pkg->set->name,
versiondescribe(&pkg->available.version,
vdew_nonambig),
NULL);
}
}
for (i = 0 ; i < cflict_index; i++) {
if (!(conflictor[i]->status == stat_halfconfigured ||
conflictor[i]->status == stat_triggersawaited ||
conflictor[i]->status == stat_triggerspending ||
conflictor[i]->status == stat_installed)) continue;
trig_activate_packageprocessing(conflictor[i]);
pkg_set_status(conflictor[i], stat_halfconfigured);
modstatdb_note(conflictor[i]);
push_cleanup(cu_prerminfavour, ~ehflag_normaltidy, NULL, 0,
2,(void*)conflictor[i],(void*)pkg);
maintainer_script_installed(conflictor[i], PRERMFILE, "pre-removal",
"remove", "in-favour", pkg->set->name,
versiondescribe(&pkg->available.version,
vdew_nonambig),
NULL);
pkg_set_status(conflictor[i], stat_halfinstalled);
modstatdb_note(conflictor[i]);
}
pkg_set_eflags(pkg, eflag_reinstreq);
if (pkg->status == stat_notinstalled)
pkg->installed.version= pkg->available.version;
pkg_set_status(pkg, stat_halfinstalled);
modstatdb_note(pkg);
if (oldversionstatus == stat_notinstalled) {
push_cleanup(cu_preinstverynew, ~ehflag_normaltidy, NULL, 0,
3,(void*)pkg,(void*)cidir,(void*)cidirrest);
maintainer_script_new(pkg, PREINSTFILE, "pre-installation", cidir, cidirrest,
"install", NULL);
} else if (oldversionstatus == stat_configfiles) {
push_cleanup(cu_preinstnew, ~ehflag_normaltidy, NULL, 0,
3,(void*)pkg,(void*)cidir,(void*)cidirrest);
maintainer_script_new(pkg, PREINSTFILE, "pre-installation", cidir, cidirrest,
"install", versiondescribe(&pkg->installed.version,
vdew_nonambig),
NULL);
} else {
push_cleanup(cu_preinstupgrade, ~ehflag_normaltidy, NULL, 0,
4,(void*)pkg,(void*)cidir,(void*)cidirrest,(void*)&oldversionstatus);
maintainer_script_new(pkg, PREINSTFILE, "pre-installation", cidir, cidirrest,
"upgrade", versiondescribe(&pkg->installed.version,
vdew_nonambig),
NULL);
printf(_("Unpacking replacement %.250s ...\n"),
pkgbin_name(pkg, &pkg->available, pnaw_nonambig));
}
/*
* Now we unpack the archive, backing things up as we go.
* For each file, we check to see if it already exists.
* There are several possibilities:
*
* + We are trying to install a non-directory ...
* - It doesn't exist. In this case we simply extract it.
* - It is a plain file, device, symlink, &c. We do an ‘atomic
* overwrite’ using link() and rename(), but leave a backup copy.
* Later, when we delete the backup, we remove it from any other
* packages' lists.
* - It is a directory. In this case it depends on whether we're
* trying to install a symlink or something else.
* = If we're not trying to install a symlink we move the directory
* aside and extract the node. Later, when we recursively remove
* the backed-up directory, we remove it from any other packages'
* lists.
* = If we are trying to install a symlink we do nothing - ie,
* dpkg will never replace a directory tree with a symlink. This
* is to avoid embarrassing effects such as replacing a directory
* tree with a link to a link to the original directory tree.
* + We are trying to install a directory ...
* - It doesn't exist. We create it with the appropriate modes.
* - It exists as a directory or a symlink to one. We do nothing.
* - It is a plain file or a symlink (other than to a directory).
* We move it aside and create the directory. Later, when we
* delete the backup, we remove it from any other packages' lists.
*
* Install non-dir Install symlink Install dir
* Exists not X X X
* File/node/symlink LXR LXR BXR
* Directory BXR - -
*
* X: extract file/node/link/directory
* LX: atomic overwrite leaving backup
* B: ordinary backup
* R: later remove from other packages' lists
* -: do nothing
*
* After we've done this we go through the remaining things in the
* lists of packages we're trying to remove (including the old
* version of the current package). This happens in reverse order,
* so that we process files before the directories (or symlinks-to-
* directories) containing them.
*
* + If the thing is a conffile then we leave it alone for the purge
* operation.
* + Otherwise, there are several possibilities too:
* - The listed thing does not exist. We ignore it.
* - The listed thing is a directory or a symlink to a directory.
* We delete it only if it isn't listed in any other package.
* - The listed thing is not a directory, but was part of the package
* that was upgraded, we check to make sure the files aren't the
* same ones from the old package by checking dev/inode
* - The listed thing is not a directory or a symlink to one (ie,
* it's a plain file, device, pipe, &c, or a symlink to one, or a
* dangling symlink). We delete it.
*
* The removed packages' list becomes empty (of course, the new
* version of the package we're installing will have a new list,
* which replaces the old version's list).
*
* If at any stage we remove a file from a package's list, and the
* package isn't one we're already processing, and the package's
* list becomes empty as a result, we ‘vanish’ the package. This
* means that we run its postrm with the ‘disappear’ argument, and
* put the package in the ‘not-installed’ state. If it had any
* conffiles, their hashes and ownership will have been transferred
* already, so we just ignore those and forget about them from the
* point of view of the disappearing package.
*
* NOTE THAT THE OLD POSTRM IS RUN AFTER THE NEW PREINST, since the
* files get replaced ‘as we go’.
*/
m_pipe(p1);
push_cleanup(cu_closepipe, ehflag_bombout, NULL, 0, 1, (void *)&p1[0]);
pid = subproc_fork();
if (pid == 0) {
m_dup2(p1[1],1); close(p1[0]); close(p1[1]);
execlp(BACKEND, BACKEND, "--fsys-tarfile", filename, NULL);
ohshite(_("unable to execute %s (%s)"),
_("package filesystem archive extraction"), BACKEND);
}
close(p1[1]);
p1[1] = -1;
newfileslist = NULL;
tc.newfilesp = &newfileslist;
push_cleanup(cu_fileslist, ~0, NULL, 0, 0);
tc.pkg= pkg;
tc.backendpipe= p1[0];
r = tar_extractor(&tc, &tf);
if (r) {
if (errno) {
ohshite(_("error reading dpkg-deb tar output"));
} else {
ohshit(_("corrupted filesystem tarfile - corrupted package archive"));
}
}
fd_skip(p1[0], -1, _("dpkg-deb: zap possible trailing zeros"));
close(p1[0]);
p1[0] = -1;
subproc_wait_check(pid, BACKEND " --fsys-tarfile", PROCPIPE);
tar_deferred_extract(newfileslist, pkg);
if (oldversionstatus == stat_halfinstalled || oldversionstatus == stat_unpacked) {
/* Packages that were in ‘installed’ and ‘postinstfailed’ have been
* reduced to ‘unpacked’ by now, by the running of the prerm script. */
pkg_set_status(pkg, stat_halfinstalled);
modstatdb_note(pkg);
push_cleanup(cu_postrmupgrade, ~ehflag_normaltidy, NULL, 0, 1, (void *)pkg);
maintainer_script_alternative(pkg, POSTRMFILE, "post-removal", cidir, cidirrest,
"upgrade", "failed-upgrade");
}
/* If anything goes wrong while tidying up it's a bit late to do
* anything about it. However, we don't install the new status
* info yet, so that a future dpkg installation will put everything
* right (we hope).
*
* If something does go wrong later the ‘conflictor’ package will be
* left in the ‘removal_failed’ state. Removing or installing it
* will be impossible if it was required because of the conflict with
* the package we're installing now and (presumably) the dependency
* by other packages. This means that the files it contains in
* common with this package will hang around until we successfully
* get this package installed, after which point we can trust the
* conflicting package's file list, which will have been updated to
* remove any files in this package. */
push_checkpoint(~ehflag_bombout, ehflag_normaltidy);
/* Now we delete all the files that were in the old version of
* the package only, except (old or new) conffiles, which we leave
* alone. */
reversefilelist_init(&rlistit,pkg->clientdata->files);
while ((namenode= reversefilelist_next(&rlistit))) {
struct filenamenode *usenode;
if ((namenode->flags & fnnf_new_conff) ||
(namenode->flags & fnnf_new_inarchive))
continue;
usenode = namenodetouse(namenode, pkg, &pkg->installed);
trig_file_activate(usenode, pkg);
varbuf_trunc(&fnamevb, fnameidlu);
varbuf_add_str(&fnamevb, usenode->name);
varbuf_end_str(&fnamevb);
if (!stat(namenode->name,&stab) && S_ISDIR(stab.st_mode)) {
debug(dbg_eachfiledetail, "process_archive: %s is a directory",
namenode->name);
if (dir_is_used_by_others(namenode, pkg))
continue;
}
if (lstat(fnamevb.buf, &oldfs)) {
if (!(errno == ENOENT || errno == ELOOP || errno == ENOTDIR))
warning(_("could not stat old file '%.250s' so not deleting it: %s"),
fnamevb.buf, strerror(errno));
continue;
}
if (S_ISDIR(oldfs.st_mode)) {
if (rmdir(fnamevb.buf)) {
warning(_("unable to delete old directory '%.250s': %s"),
namenode->name, strerror(errno));
} else if ((namenode->flags & fnnf_old_conff)) {
warning(_("old conffile '%.250s' was an empty directory "
"(and has now been deleted)"), namenode->name);
}
} else {
struct fileinlist *sameas = NULL;
static struct stat empty_stat;
struct varbuf cfilename = VARBUF_INIT;
/*
* Ok, it's an old file, but is it really not in the new package?
* It might be known by a different name because of symlinks.
*
* We need to check to make sure, so we stat the file, then compare
* it to the new list. If we find a dev/inode match, we assume they
* are the same file, and leave it alone. NOTE: we don't check in
* other packages for sanity reasons (we don't want to stat _all_
* the files on the system).
*
* We run down the list of _new_ files in this package. This keeps
* the process a little leaner. We are only worried about new ones
* since ones that stayed the same don't really apply here.
*/
/* If we can't stat the old or new file, or it's a directory,
* we leave it up to the normal code. */
debug(dbg_eachfile, "process_archive: checking %s for same files on "
"upgrade/downgrade", fnamevb.buf);
for (cfile= newfileslist; cfile; cfile= cfile->next) {
/* If the file has been filtered then treat it as if it didn't exist
* on the file system. */
if (cfile->namenode->flags & fnnf_filtered)
continue;
if (!cfile->namenode->filestat) {
struct stat tmp_stat;
varbuf_reset(&cfilename);
varbuf_add_str(&cfilename, instdir);
varbuf_add_char(&cfilename, '/');
varbuf_add_str(&cfilename, cfile->namenode->name);
varbuf_end_str(&cfilename);
if (lstat(cfilename.buf, &tmp_stat) == 0) {
cfile->namenode->filestat = nfmalloc(sizeof(struct stat));
memcpy(cfile->namenode->filestat, &tmp_stat, sizeof(struct stat));
} else {
if (!(errno == ENOENT || errno == ELOOP || errno == ENOTDIR))
ohshite(_("unable to stat other new file `%.250s'"),
cfile->namenode->name);
cfile->namenode->filestat = &empty_stat;
continue;
}
}
if (cfile->namenode->filestat == &empty_stat)
continue;
if (oldfs.st_dev == cfile->namenode->filestat->st_dev &&
oldfs.st_ino == cfile->namenode->filestat->st_ino) {
if (sameas)
warning(_("old file '%.250s' is the same as several new files! "
"(both '%.250s' and '%.250s')"), fnamevb.buf,
sameas->namenode->name, cfile->namenode->name);
sameas= cfile;
debug(dbg_eachfile, "process_archive: not removing %s,"
" since it matches %s", fnamevb.buf, cfile->namenode->name);
}
}
varbuf_destroy(&cfilename);
if ((namenode->flags & fnnf_old_conff)) {
if (sameas) {
if (sameas->namenode->flags & fnnf_new_conff) {
if (!strcmp(sameas->namenode->oldhash, NEWCONFFILEFLAG)) {
sameas->namenode->oldhash= namenode->oldhash;
debug(dbg_eachfile, "process_archive: old conff %s"
" is same as new conff %s, copying hash",
namenode->name, sameas->namenode->name);
} else {
debug(dbg_eachfile, "process_archive: old conff %s"
" is same as new conff %s but latter already has hash",
namenode->name, sameas->namenode->name);
}
}
} else {
debug(dbg_eachfile, "process_archive: old conff %s"
" is disappearing", namenode->name);
namenode->flags |= fnnf_obs_conff;
newconff_append(&newconffileslastp, namenode);
addfiletolist(&tc, namenode);
}
continue;
}
if (sameas)
continue;
if (secure_unlink_statted(fnamevb.buf, &oldfs)) {
warning(_("unable to securely remove old file '%.250s': %s"),
namenode->name, strerror(errno));
}
} /* !S_ISDIR */
}
/* OK, now we can write the updated files-in-this package list,
* since we've done away (hopefully) with all the old junk. */
write_filelist_except(pkg, &pkg->available, newfileslist, 0);
/* Trigger interests may have changed.
* Firstly we go through the old list of interests deleting them.
* Then we go through the new list adding them. */
strcpy(cidirrest, TRIGGERSCIFILE);
trig_parse_ci(pkgadminfile(pkg, &pkg->installed, TRIGGERSCIFILE),
trig_cicb_interest_delete, NULL, pkg, &pkg->installed);
trig_parse_ci(cidir, trig_cicb_interest_add, NULL, pkg, &pkg->available);
trig_file_interests_save();
/* We also install the new maintainer scripts, and any other
* cruft that may have come along with the package. First
* we go through the existing scripts replacing or removing
* them as appropriate; then we go through the new scripts
* (any that are left) and install them. */
debug(dbg_general, "process_archive updating info directory");
pkg_infodb_update(pkg, cidir, cidirrest);
/*
* Update the status database.
*
* This involves copying each field across from the ‘available’
* to the ‘installed’ half of the pkg structure.
* For some of the fields we have to do a complicated construction
* operation; for others we can just copy the value.
* We tackle the fields in the order they appear, so that
* we don't miss any out :-).
* At least we don't have to copy any strings that are referred
* to, because these are never modified and never freed.
*/
/* The dependencies are the most difficult. We have to build
* a whole new forward dependency tree. At least the reverse
* links (linking our deppossi's into the reverse chains)
* can be done by copy_dependency_links. */
newdeplist = NULL;
newdeplistlastp = &newdeplist;
for (dep= pkg->available.depends; dep; dep= dep->next) {
newdep= nfmalloc(sizeof(struct dependency));
newdep->up= pkg;
newdep->next = NULL;
newdep->list = NULL;
newpossilastp = &newdep->list;
for (possi= dep->list; possi; possi= possi->next) {
newpossi= nfmalloc(sizeof(struct deppossi));
newpossi->up= newdep;
newpossi->ed= possi->ed;
newpossi->next = NULL;
newpossi->rev_next = newpossi->rev_prev = NULL;
newpossi->arch_is_implicit = possi->arch_is_implicit;
newpossi->arch = possi->arch;
newpossi->verrel= possi->verrel;
if (possi->verrel != dvr_none)
newpossi->version= possi->version;
else
blankversion(&newpossi->version);
newpossi->cyclebreak = false;
*newpossilastp= newpossi;
newpossilastp= &newpossi->next;
}
newdep->type= dep->type;
*newdeplistlastp= newdep;
newdeplistlastp= &newdep->next;
}
/* Right, now we've replicated the forward tree, we
* get copy_dependency_links to remove all the old dependency
* structures from the reverse links and add the new dependency
* structures in instead. It also copies the new dependency
* structure pointer for this package into the right field. */
copy_dependency_links(pkg,&pkg->installed.depends,newdeplist,0);
/* We copy the text fields. */
pkg->installed.essential= pkg->available.essential;
pkg->installed.multiarch = pkg->available.multiarch;
pkg->installed.description= pkg->available.description;
pkg->installed.maintainer= pkg->available.maintainer;
pkg->installed.source= pkg->available.source;
pkg->installed.arch = pkg->available.arch;
pkg->installed.installedsize= pkg->available.installedsize;
pkg->installed.version= pkg->available.version;
pkg->installed.origin = pkg->available.origin;
pkg->installed.bugs = pkg->available.bugs;
/* We have to generate our own conffiles structure. */
pkg->installed.conffiles = NULL;
iconffileslastp = &pkg->installed.conffiles;
for (cfile= newconffiles; cfile; cfile= cfile->next) {
newiconff= nfmalloc(sizeof(struct conffile));
newiconff->next = NULL;
newiconff->name= nfstrsave(cfile->namenode->name);
newiconff->hash= nfstrsave(cfile->namenode->oldhash);
newiconff->obsolete= !!(cfile->namenode->flags & fnnf_obs_conff);
*iconffileslastp= newiconff;
iconffileslastp= &newiconff->next;
}
/* We can just copy the arbitrary fields list, because it is
* never even rearranged. Phew! */
pkg->installed.arbs= pkg->available.arbs;
/* Check for disappearing packages:
* We go through all the packages on the system looking for ones
* whose files are entirely part of the one we've just unpacked
* (and which actually *have* some files!).
*
* Any that we find are removed - we run the postrm with ‘disappear’
* as an argument, and remove their info/... files and status info.
* Conffiles are ignored (the new package had better do something
* with them!). */
it = pkg_db_iter_new();
while ((otherpkg = pkg_db_iter_next_pkg(it)) != NULL) {
ensure_package_clientdata(otherpkg);
if (otherpkg == pkg ||
otherpkg->status == stat_notinstalled ||
otherpkg->status == stat_configfiles ||
otherpkg->clientdata->istobe == itb_remove ||
!otherpkg->clientdata->files) continue;
debug(dbg_veryverbose, "process_archive checking disappearance %s",
pkg_name(otherpkg, pnaw_nonambig));
assert(otherpkg->clientdata->istobe == itb_normal ||
otherpkg->clientdata->istobe == itb_deconfigure);
for (cfile= otherpkg->clientdata->files;
cfile && !strcmp(cfile->namenode->name,"/.");
cfile= cfile->next);
if (!cfile) {
debug(dbg_stupidlyverbose, "process_archive no non-root, no disappear");
continue;
}
for (cfile= otherpkg->clientdata->files;
cfile && !filesavespackage(cfile,otherpkg,pkg);
cfile= cfile->next);
if (cfile) continue;
/* So dependency things will give right answers ... */
otherpkg->clientdata->istobe= itb_remove;
debug(dbg_veryverbose, "process_archive disappear checking dependencies");
for (pdep = otherpkg->set->depended.installed;
pdep;
pdep = pdep->rev_next) {
if (pdep->up->type != dep_depends && pdep->up->type != dep_predepends &&
pdep->up->type != dep_recommends) continue;
if (depisok(pdep->up, &depprobwhy, NULL, NULL, false))
continue;
varbuf_end_str(&depprobwhy);
debug(dbg_veryverbose,"process_archive cannot disappear: %s",depprobwhy.buf);
break;
}
if (!pdep) {
/* If we haven't found a reason not to yet, let's look some more. */
for (providecheck= otherpkg->installed.depends;
providecheck;
providecheck= providecheck->next) {
if (providecheck->type != dep_provides) continue;
for (pdep = providecheck->list->ed->depended.installed;
pdep;
pdep = pdep->rev_next) {
if (pdep->up->type != dep_depends && pdep->up->type != dep_predepends &&
pdep->up->type != dep_recommends)
continue;
if (depisok(pdep->up, &depprobwhy, NULL, NULL, false))
continue;
varbuf_end_str(&depprobwhy);
debug(dbg_veryverbose,"process_archive cannot disappear (provides %s): %s",
providecheck->list->ed->name, depprobwhy.buf);
goto break_from_both_loops_at_once;
}
}
break_from_both_loops_at_once:;
}
otherpkg->clientdata->istobe= itb_normal;
if (pdep) continue;
/* No, we're disappearing it. This is the wrong time to go and
* run maintainer scripts and things, as we can't back out. But
* what can we do ? It has to be run this late. */
pkg_disappear(otherpkg, pkg);
} /* while (otherpkg= ... */
pkg_db_iter_free(it);
/* Delete files from any other packages' lists.
* We have to do this before we claim this package is in any
* sane kind of state, as otherwise we might delete by mistake
* a file that we overwrote, when we remove the package which
* had the version we overwrote. To prevent this we make
* sure that we don't claim this package is OK until we
* have claimed ‘ownership’ of all its files. */
for (cfile= newfileslist; cfile; cfile= cfile->next) {
struct filepackages_iterator *iter;
struct pkgset *divpkgset;
if (!(cfile->namenode->flags & fnnf_elide_other_lists)) continue;
if (cfile->namenode->divert && cfile->namenode->divert->useinstead) {
divpkgset = cfile->namenode->divert->pkgset;
if (divpkgset == pkg->set) {
debug(dbg_eachfile,
"process_archive not overwriting any `%s' (overriding, `%s')",
cfile->namenode->name, cfile->namenode->divert->useinstead->name);
continue;
} else {
debug(dbg_eachfile,
"process_archive looking for overwriting `%s' (overridden by %s)",
cfile->namenode->name, divpkgset ? divpkgset->name : "<local>");
}
} else {
divpkgset = NULL;
debug(dbg_eachfile, "process_archive looking for overwriting `%s'",
cfile->namenode->name);
}
iter = filepackages_iter_new(cfile->namenode);
while ((otherpkg = filepackages_iter_next(iter))) {
debug(dbg_eachfiledetail, "process_archive ... found in %s",
pkg_name(otherpkg, pnaw_nonambig));
/* If !fileslistvalid then it's one of the disappeared packages above
* and we don't bother with it here, clearly. */
if (otherpkg == pkg || !otherpkg->clientdata->fileslistvalid)
continue;
if (otherpkg->set == divpkgset) {
debug(dbg_eachfiledetail, "process_archive ... diverted, skipping");
continue;
}
/* Found one. We delete remove the list entry for this file,
* (and any others in the same package) and then mark the package
* as requiring a reread. */
write_filelist_except(otherpkg, &otherpkg->installed,
otherpkg->clientdata->files, fnnf_elide_other_lists);
ensure_package_clientdata(otherpkg);
debug(dbg_veryverbose, "process_archive overwrote from %s",
pkg_name(otherpkg, pnaw_nonambig));
}
filepackages_iter_free(iter);
}
/* Right, the package we've unpacked is now in a reasonable state.
* The only thing that we have left to do with it is remove
* backup files, and we can leave the user to fix that if and when
* it happens (we leave the reinstall required flag, of course). */
pkg_set_status(pkg, stat_unpacked);
modstatdb_note(pkg);
/* Now we delete all the backup files that we made when
* extracting the archive - except for files listed as conffiles
* in the new package.
* This time we count it as an error if something goes wrong.
*
* Note that we don't ever delete things that were in the old
* package as a conffile and don't appear at all in the new.
* They stay recorded as obsolete conffiles and will eventually
* (if not taken over by another package) be forgotten. */
for (cfile= newfileslist; cfile; cfile= cfile->next) {
if (cfile->namenode->flags & fnnf_new_conff) continue;
varbuf_trunc(&fnametmpvb, fnameidlu);
varbuf_add_str(&fnametmpvb,
namenodetouse(cfile->namenode, pkg, &pkg->installed)->name);
varbuf_add_str(&fnametmpvb, DPKGTEMPEXT);
varbuf_end_str(&fnametmpvb);
ensure_pathname_nonexisting(fnametmpvb.buf);
}
/* OK, we're now fully done with the main package.
* This is quite a nice state, so we don't unwind past here. */
pkg_reset_eflags(pkg);
modstatdb_note(pkg);
push_checkpoint(~ehflag_bombout, ehflag_normaltidy);
/* Only the removal of the conflictor left to do.
* The files list for the conflictor is still a little inconsistent in-core,
* as we have not yet updated the filename->packages mappings; however,
* the package->filenames mapping is. */
for (i = 0 ; i < cflict_index ; i++) {
/* We need to have the most up-to-date info about which files are
* what ... */
ensure_allinstfiles_available();
removal_bulk(conflictor[i]);
}
if (cipaction->arg_int == act_install)
add_to_queue(pkg);
}