static void
pkg_disappear(struct pkginfo *pkg, struct pkginfo *infavour)
{
printf(_("(Noting disappearance of %s, which has been completely replaced.)\n"),
pkg_name(pkg, pnaw_nonambig));
log_action("disappear", pkg, &pkg->installed);
debug(dbg_general, "pkg_disappear disappearing %s",
pkg_name(pkg, pnaw_nonambig));
trig_activate_packageprocessing(pkg);
maintainer_script_installed(pkg, POSTRMFILE,
"post-removal script (for disappearance)",
"disappear",
infavour->set->name,
versiondescribe(&infavour->available.version,
vdew_nonambig),
NULL);
/* OK, now we delete all the stuff in the ‘info’ directory .. */
debug(dbg_general, "pkg_disappear cleaning info directory");
pkg_infodb_foreach(pkg, &pkg->installed, pkg_infodb_remove_file);
dir_sync_path(pkgadmindir());
pkg_set_status(pkg, stat_notinstalled);
pkg_set_want(pkg, want_unknown);
pkg_reset_eflags(pkg);
blankversion(&pkg->configversion);
pkgbin_blank(&pkg->installed);
pkg->clientdata->fileslistvalid = false;
modstatdb_note(pkg);
}
/*
* Returns true if the file is used by packages other than pkg,
* false otherwise.
*/
bool
dir_is_used_by_others(struct filenamenode *file, struct pkginfo *pkg)
{
struct filepackages_iterator *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 = filepackages_iter_new(file);
while ((other_pkg = filepackages_iter_next(iter))) {
debug(dbg_veryverbose, "dir_is_used_by_others considering %s ...",
pkg_name(other_pkg, pnaw_always));
if (other_pkg == pkg)
continue;
filepackages_iter_free(iter);
debug(dbg_veryverbose, "dir_is_used_by_others yes");
return true;
}
filepackages_iter_free(iter);
debug(dbg_veryverbose, "dir_is_used_by_others no");
return false;
}
/*
* Does cycle checking. Doesn't mind if pkg has no triggers pending - in
* that case does nothing but fix up any stale awaiters.
*/
void
trigproc(struct pkginfo *pkg)
{
static struct varbuf namesarg;
struct trigpend *tp;
struct pkginfo *gaveup;
debug(dbg_triggers, "trigproc %s", pkg_name(pkg, pnaw_always));
if (pkg->clientdata->trigprocdeferred)
pkg->clientdata->trigprocdeferred->pkg = NULL;
pkg->clientdata->trigprocdeferred = NULL;
if (pkg->trigpend_head) {
assert(pkg->status == stat_triggerspending ||
pkg->status == stat_triggersawaited);
gaveup = check_trigger_cycle(pkg);
if (gaveup == pkg)
return;
printf(_("Processing triggers for %s (%s) ...\n"),
pkg_name(pkg, pnaw_nonambig),
versiondescribe(&pkg->installed.version, vdew_nonambig));
log_action("trigproc", pkg, &pkg->installed);
varbuf_reset(&namesarg);
for (tp = pkg->trigpend_head; tp; tp = tp->next) {
varbuf_add_char(&namesarg, ' ');
varbuf_add_str(&namesarg, tp->name);
}
varbuf_end_str(&namesarg);
/* Setting the status to half-configured
* causes modstatdb_note to clear pending triggers. */
pkg_set_status(pkg, stat_halfconfigured);
modstatdb_note(pkg);
if (!f_noact) {
sincenothing = 0;
maintscript_postinst(pkg, "triggered",
namesarg.buf + 1, NULL);
}
post_postinst_tasks(pkg, stat_installed);
} else {
/* In other branch is done by modstatdb_note(), from inside
* post_postinst_tasks(). */
trig_clear_awaiters(pkg);
}
}
bool
skip_due_to_hold(struct pkginfo *pkg)
{
if (pkg->want != PKG_WANT_HOLD)
return false;
if (fc_hold) {
notice(_("package %s was on hold, processing it anyway as you requested"),
pkg_name(pkg, pnaw_nonambig));
return false;
}
printf(_("Package %s is on hold, not touching it. Use --force-hold to override.\n"),
pkg_name(pkg, pnaw_nonambig));
return true;
}
static void
breaks_check_one(struct varbuf *aemsgs, enum dep_check *ok,
struct deppossi *breaks, struct pkginfo *broken,
struct pkginfo *breaker, struct deppossi *virtbroken)
{
struct varbuf depmsg = VARBUF_INIT;
debug(dbg_depcondetail, " checking breaker %s virtbroken %s",
pkg_name(breaker, pnaw_always),
virtbroken ? virtbroken->ed->name : "<none>");
if (breaker->status == PKG_STAT_NOTINSTALLED ||
breaker->status == PKG_STAT_CONFIGFILES)
return;
if (broken == breaker) return;
if (!versionsatisfied(&broken->installed, breaks)) return;
/* The test below can only trigger if dep_breaks start having
* arch qualifiers different from “any”. */
if (!archsatisfied(&broken->installed, breaks))
return;
if (ignore_depends(breaker)) return;
if (virtbroken && ignore_depends(&virtbroken->ed->pkg))
return;
if (virtbroken && !pkg_virtual_deppossi_satisfied(breaks, virtbroken))
return;
varbufdependency(&depmsg, breaks->up);
varbuf_end_str(&depmsg);
varbuf_printf(aemsgs, _(" %s (%s) breaks %s and is %s.\n"),
pkg_name(breaker, pnaw_nonambig),
versiondescribe(&breaker->installed.version, vdew_nonambig),
depmsg.buf, gettext(statusstrings[breaker->status]));
varbuf_destroy(&depmsg);
if (virtbroken) {
varbuf_printf(aemsgs, _(" %s (%s) provides %s.\n"),
pkg_name(broken, pnaw_nonambig),
versiondescribe(&broken->installed.version, vdew_nonambig),
virtbroken->ed->name);
} else if (breaks->verrel != DPKG_RELATION_NONE) {
varbuf_printf(aemsgs, _(" Version of %s to be configured is %s.\n"),
pkg_name(broken, pnaw_nonambig),
versiondescribe(&broken->installed.version, vdew_nonambig));
if (in_force(FORCE_DEPENDS_VERSION))
return;
}
if (force_breaks(breaks)) return;
*ok = DEP_CHECK_HALT;
}
void
trig_clear_awaiters(struct pkginfo *notpend)
{
struct trigaw *ta;
struct pkginfo *aw;
if (notpend->trigpend_head)
internerr("package %s has pending triggers",
pkg_name(notpend, pnaw_always));
ta = notpend->othertrigaw_head;
notpend->othertrigaw_head = NULL;
for (; ta; ta = ta->samepend_next) {
aw = ta->aw;
if (!aw)
continue;
LIST_UNLINK_PART(aw->trigaw, ta, sameaw);
if (!aw->trigaw.head && aw->status == PKG_STAT_TRIGGERSAWAITED) {
if (aw->trigpend_head)
pkg_set_status(aw, PKG_STAT_TRIGGERSPENDING);
else
pkg_set_status(aw, PKG_STAT_INSTALLED);
modstatdb_note(aw);
}
}
}
/*
* conflictor may be NULL.
*/
void cu_prermdeconfigure(int argc, void **argv) {
struct pkginfo *deconf= (struct pkginfo*)argv[0];
struct pkginfo *conflictor = (struct pkginfo *)argv[1];
struct pkginfo *infavour= (struct pkginfo*)argv[2];
if (conflictor) {
maintainer_script_postinst(deconf, "abort-deconfigure",
"in-favour",
pkgbin_name(infavour, &infavour->available,
pnaw_nonambig),
versiondescribe(&infavour->available.version,
vdew_nonambig),
"removing",
pkg_name(conflictor, pnaw_nonambig),
versiondescribe(&conflictor->installed.version,
vdew_nonambig),
NULL);
} else {
maintainer_script_postinst(deconf, "abort-deconfigure",
"in-favour",
pkgbin_name(infavour, &infavour->available,
pnaw_nonambig),
versiondescribe(&infavour->available.version,
vdew_nonambig),
NULL);
}
post_postinst_tasks(deconf, stat_installed);
}
/*
* Returns true if the file is used by pkg, false otherwise.
*/
bool
dir_is_used_by_pkg(struct filenamenode *file, struct pkginfo *pkg,
struct fileinlist *list)
{
struct fileinlist *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;
}
void
trigproc_run_deferred(void)
{
jmp_buf ejbuf;
debug(dbg_triggers, "trigproc_run_deferred");
while (!pkg_queue_is_empty(&deferred)) {
struct pkginfo *pkg;
pkg = pkg_queue_pop(&deferred);
if (!pkg)
continue;
if (setjmp(ejbuf)) {
pop_error_context(ehflag_bombout);
continue;
}
push_error_context_jump(&ejbuf, print_error_perpackage,
pkg_name(pkg, pnaw_nonambig));
pkg->clientdata->trigprocdeferred = NULL;
trigproc(pkg, TRIGPROC_TRY);
pop_error_context(ehflag_normaltidy);
}
}
static const char *
parse_awaiter_package(void)
{
struct dpkg_error err = DPKG_ERROR_INIT;
struct pkginfo *pkg;
if (!f_await)
bypackage = "-";
if (bypackage == NULL) {
const char *pkgname, *archname;
pkgname = getenv("DPKG_MAINTSCRIPT_PACKAGE");
archname = getenv("DPKG_MAINTSCRIPT_ARCH");
if (pkgname == NULL || archname == NULL)
ohshit(_("must be called from a maintainer script"
" (or with a --by-package option)"));
pkg = pkg_spec_find_pkg(pkgname, archname, &err);
} else if (strcmp(bypackage, "-") == 0) {
pkg = NULL;
} else {
pkg = pkg_spec_parse_pkg(bypackage, &err);
}
/* Normalize the bypackage name if there was no error. */
if (pkg)
bypackage = pkg_name(pkg, pnaw_nonambig);
return err.str;
}
static void
breaks_check_one(struct varbuf *aemsgs, enum dep_check *ok,
struct deppossi *breaks, struct pkginfo *broken,
struct pkginfo *breaker, struct pkgset *virtbroken)
{
struct varbuf depmsg = VARBUF_INIT;
debug(dbg_depcondetail, " checking breaker %s virtbroken %s",
pkg_name(breaker, pnaw_always),
virtbroken ? virtbroken->name : "<none>");
if (breaker->status == stat_notinstalled ||
breaker->status == stat_configfiles) return;
if (broken == breaker) return;
if (!versionsatisfied(&broken->installed, breaks)) return;
/* The test below can only trigger if dep_breaks start having
* arch qualifiers different from “any”. */
if (!archsatisfied(&broken->installed, breaks))
return;
if (ignore_depends(breaker)) return;
if (virtbroken && ignore_depends(&virtbroken->pkg))
return;
varbufdependency(&depmsg, breaks->up);
varbuf_end_str(&depmsg);
varbuf_printf(aemsgs, _(" %s (%s) breaks %s and is %s.\n"),
pkg_name(breaker, pnaw_nonambig),
versiondescribe(&breaker->installed.version, vdew_nonambig),
depmsg.buf, gettext(statusstrings[breaker->status]));
varbuf_destroy(&depmsg);
if (virtbroken) {
varbuf_printf(aemsgs, _(" %s (%s) provides %s.\n"),
pkg_name(broken, pnaw_nonambig),
versiondescribe(&broken->installed.version, vdew_nonambig),
virtbroken->name);
} else if (breaks->verrel != dpkg_relation_none) {
varbuf_printf(aemsgs, _(" Version of %s to be configured is %s.\n"),
pkg_name(broken, pnaw_nonambig),
versiondescribe(&broken->installed.version, vdew_nonambig));
if (fc_dependsversion) return;
}
if (force_breaks(breaks)) return;
*ok = dep_check_halt;
}
/*
* Called by modstatdb_note.
*/
void
trig_activate_packageprocessing(struct pkginfo *pkg)
{
debug(dbg_triggersdetail, "trigproc_activate_packageprocessing pkg=%s",
pkg_name(pkg, pnaw_always));
trig_parse_ci(pkg_infodb_get_file(pkg, &pkg->installed, TRIGGERSCIFILE),
NULL, trig_cicb_statuschange_activate,
pkg, &pkg->installed);
}
static struct pkginfo *
pkg_array_mapper(const char *name)
{
struct pkginfo *pkg;
pkg = dpkg_options_parse_pkgname(cipaction, name);
if (pkg->status == PKG_STAT_NOTINSTALLED)
notice(_("package '%s' is not installed"), pkg_name(pkg, pnaw_nonambig));
return pkg;
}
static bool
tortoise_not_in_hare(struct pkginfo *processing_now,
struct trigcycleperpkg *tortoise_pkg)
{
const char *processing_now_name, *tortoise_name;
struct trigpend *hare_trig, *tortoise_trig;
processing_now_name = pkg_name(processing_now, pnaw_nonambig);
tortoise_name = pkg_name(tortoise_pkg->pkg, pnaw_nonambig);
debug(dbg_triggersdetail, "%s pnow=%s tortoise=%s", __func__,
processing_now_name, tortoise_name);
for (tortoise_trig = tortoise_pkg->then_trigs;
tortoise_trig;
tortoise_trig = tortoise_trig->next) {
debug(dbg_triggersdetail,
"%s pnow=%s tortoise=%s tortoisetrig=%s", __func__,
processing_now_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, "%s pnow=%s tortoise=%s"
" tortoisetrig=%s haretrig=%s", __func__,
processing_now_name, tortoise_name,
tortoise_trig->name, hare_trig->name);
if (strcmp(hare_trig->name, tortoise_trig->name) == 0)
break;
}
if (hare_trig == NULL) {
/* Not found in hare, yay! */
debug(dbg_triggersdetail, "%s pnow=%s tortoise=%s OK",
__func__, processing_now_name, tortoise_name);
return true;
}
}
return false;
}
static void
trigproc_enqueue_deferred(struct pkginfo *pend)
{
if (f_triggers < 0)
return;
ensure_package_clientdata(pend);
if (pend->clientdata->trigprocdeferred)
return;
pend->clientdata->trigprocdeferred = pkg_queue_push(&deferred, pend);
debug(dbg_triggers, "trigproc_enqueue_deferred pend=%s",
pkg_name(pend, pnaw_always));
}
static void describebriefly(struct pkginfo *pkg) {
int maxl, l;
const char *pdesc;
maxl= 57;
l= strlen(pkg->set->name);
if (l>20) maxl -= (l-20);
pdesc = pkgbin_summary(pkg, &pkg->installed, &l);
l = min(l, maxl);
printf(" %-20s %.*s\n", pkg_name(pkg, pnaw_nonambig), l, pdesc);
}
static void getsel1package(struct pkginfo *pkg) {
const char *pkgname;
int l;
if (pkg->want == want_unknown) return;
pkgname = pkg_name(pkg, pnaw_nonambig);
l = strlen(pkgname);
l >>= 3;
l = 6 - l;
if (l < 1)
l = 1;
printf("%s%.*s%s\n", pkgname, l, "\t\t\t\t\t\t", wantinfos[pkg->want].name);
}
/*
* Returns true if the directory contains conffiles belonging to pkg,
* false otherwise.
*/
bool
dir_has_conffiles(struct filenamenode *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)
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;
}
/*
* Note: If anyone wants to set some triggers-pending, they must also
* set status appropriately, or we will undo it. That is, it is legal
* to call this when pkg->status and pkg->trigpend_head disagree and
* in that case pkg->status takes precedence and pkg->trigpend_head
* will be adjusted.
*/
void modstatdb_note(struct pkginfo *pkg) {
struct trigaw *ta;
onerr_abort++;
/* Clear pending triggers here so that only code that sets the status
* to interesting (for triggers) values has to care about triggers. */
if (pkg->status != stat_triggerspending &&
pkg->status != stat_triggersawaited)
pkg->trigpend_head = NULL;
if (pkg->status <= stat_configfiles) {
for (ta = pkg->trigaw.head; ta; ta = ta->sameaw.next)
ta->aw = NULL;
pkg->trigaw.head = pkg->trigaw.tail = NULL;
}
log_message("status %s %s %s", statusinfos[pkg->status].name,
pkg_name(pkg, pnaw_always),
versiondescribe(&pkg->installed.version, vdew_nonambig));
statusfd_send("status: %s: %s", pkg_name(pkg, pnaw_nonambig),
statusinfos[pkg->status].name);
if (cstatus >= msdbrw_write)
modstatdb_note_core(pkg);
if (!pkg->trigpend_head && pkg->othertrigaw_head) {
/* Automatically remove us from other packages' Triggers-Awaited.
* We do this last because we want to maximize our chances of
* successfully recording the status of the package we were
* pointed at by our caller, although there is some risk of
* leaving us in a slightly odd situation which is cleared up
* by the trigger handling logic in deppossi_ok_found. */
trig_clear_awaiters(pkg);
}
onerr_abort--;
}
static void getsel1package(struct pkginfo *pkg) {
const char *pkgname;
int l;
if (pkg->want == PKG_WANT_UNKNOWN)
return;
pkgname = pkg_name(pkg, pnaw_nonambig);
l = strlen(pkgname);
l >>= 3;
l = 6 - l;
if (l < 1)
l = 1;
printf("%s%.*s%s\n", pkgname, l, "\t\t\t\t\t\t", pkg_want_name(pkg));
}
/**
* 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 filenamenode *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;
}
}
}
static bool
foundcyclebroken(struct cyclesofarlink *thislink, struct cyclesofarlink *sofar,
struct pkginfo *dependedon, struct deppossi *possi)
{
struct cyclesofarlink *sol;
if(!possi)
return false;
/* We're investigating the dependency ‘possi’ to see if it
* is part of a loop. To this end we look to see whether the
* depended-on package is already one of the packages whose
* dependencies we're searching. */
for (sol = sofar; sol && sol->pkg != dependedon; sol = sol->prev);
/* If not, we do a recursive search on it to see what we find. */
if (!sol)
return findbreakcyclerecursive(dependedon, thislink);
debug(dbg_depcon,"found cycle");
/* Right, we now break one of the links. We prefer to break
* a dependency of a package without a postinst script, as
* this is a null operation. If this is not possible we break
* the other link in the recursive calling tree which mentions
* this package (this being the first package involved in the
* cycle). It doesn't particularly matter which we pick, but if
* we break the earliest dependency we came across we may be
* able to do something straight away when findbreakcycle returns. */
sofar= thislink;
for (sol = sofar; !(sol != sofar && sol->pkg == dependedon); sol = sol->prev) {
if (!pkg_infodb_has_file(sol->pkg, &sol->pkg->installed, POSTINSTFILE))
break;
}
/* Now we have either a package with no postinst, or the other
* occurrence of the current package in the list. */
sol->possi->cyclebreak = true;
debug(dbg_depcon, "cycle broken at %s -> %s",
pkg_name(sol->possi->up->up, pnaw_always), sol->possi->ed->name);
return true;
}
/*
* 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();
}
}
/* ARGSUSED */
static int
add_shlibs_to_pkg(__unused void *actdata, struct pkg *pkg, const char *fpath,
const char *name, bool is_shlib)
{
switch(filter_system_shlibs(name, NULL, 0)) {
case EPKG_OK: /* A non-system library */
pkg_addshlib_required(pkg, name);
return (EPKG_OK);
case EPKG_END: /* A system library */
return (EPKG_OK);
default:
/* Ignore link resolution errors if we're analysing a
shared library. */
if (is_shlib)
return (EPKG_OK);
warnx("(%s-%s) %s - shared library %s not found",
pkg_name(pkg), pkg_version(pkg), fpath, name);
return (EPKG_FATAL);
}
}
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;
}
void describedepcon(struct varbuf *addto, struct dependency *dep) {
const char *fmt;
struct varbuf depstr = VARBUF_INIT;
switch (dep->type) {
case dep_depends:
fmt = _("%s depends on %s");
break;
case dep_predepends:
fmt = _("%s pre-depends on %s");
break;
case dep_recommends:
fmt = _("%s recommends %s");
break;
case dep_suggests:
fmt = _("%s suggests %s");
break;
case dep_breaks:
fmt = _("%s breaks %s");
break;
case dep_conflicts:
fmt = _("%s conflicts with %s");
break;
case dep_enhances:
fmt = _("%s enhances %s");
break;
default:
internerr("unknown deptype '%d'", dep->type);
}
varbufdependency(&depstr, dep);
varbuf_end_str(&depstr);
varbuf_printf(addto, fmt, pkg_name(dep->up, pnaw_nonambig), depstr.buf);
varbuf_destroy(&depstr);
}
static void
modstatdb_note_core(struct pkginfo *pkg)
{
assert(cstatus >= msdbrw_write);
varbuf_reset(&uvb);
varbufrecord(&uvb, pkg, &pkg->installed);
if (fwrite(uvb.buf, 1, uvb.used, importanttmp) != uvb.used)
ohshite(_("unable to write updated status of `%.250s'"),
pkg_name(pkg, pnaw_nonambig));
if (fflush(importanttmp))
ohshite(_("unable to flush updated status of `%.250s'"),
pkg_name(pkg, pnaw_nonambig));
if (ftruncate(fileno(importanttmp), uvb.used))
ohshite(_("unable to truncate for updated status of `%.250s'"),
pkg_name(pkg, pnaw_nonambig));
if (fsync(fileno(importanttmp)))
ohshite(_("unable to fsync updated status of `%.250s'"),
pkg_name(pkg, pnaw_nonambig));
if (fclose(importanttmp))
ohshite(_("unable to close updated status of `%.250s'"),
pkg_name(pkg, pnaw_nonambig));
sprintf(updatefnrest, IMPORTANTFMT, nextupdate);
if (rename(importanttmpfile, updatefnbuf))
ohshite(_("unable to install updated status of `%.250s'"),
pkg_name(pkg, pnaw_nonambig));
dir_sync_path(updatesdir);
/* Have we made a real mess? */
assert(strlen(updatefnrest) <= IMPORTANTMAXLEN);
nextupdate++;
if (nextupdate > MAXUPDATES) {
modstatdb_checkpoint();
nextupdate = 0;
}
createimptmp();
}
/*
* Does cycle checking. Doesn't mind if pkg has no triggers pending - in
* that case does nothing but fix up any stale awaiters.
*/
void
trigproc(struct pkginfo *pkg, enum trigproc_type type)
{
static struct varbuf namesarg;
struct varbuf depwhynot = VARBUF_INIT;
struct trigpend *tp;
struct pkginfo *gaveup;
debug(dbg_triggers, "trigproc %s", pkg_name(pkg, pnaw_always));
if (pkg->clientdata->trigprocdeferred)
pkg->clientdata->trigprocdeferred->pkg = NULL;
pkg->clientdata->trigprocdeferred = NULL;
if (pkg->trigpend_head) {
enum dep_check ok;
assert(pkg->status == PKG_STAT_TRIGGERSPENDING ||
pkg->status == PKG_STAT_TRIGGERSAWAITED);
if (dependtry > 1) {
gaveup = check_trigger_cycle(pkg);
if (gaveup == pkg)
return;
if (findbreakcycle(pkg))
sincenothing = 0;
}
ok = dependencies_ok(pkg, NULL, &depwhynot);
if (ok == DEP_CHECK_DEFER) {
varbuf_destroy(&depwhynot);
enqueue_package(pkg);
return;
} else if (ok == DEP_CHECK_HALT) {
/* We cannot process this package on this dpkg run,
* and we can get here repeatedly if this package is
* required to make progress for other packages. So
* reset the trigger cycles tracking to avoid bogus
* cycle detections. */
trigproc_reset_cycle();
/* When doing opportunistic trigger processig, nothing
* requires us to be able to make progress; skip the
* package and silently ignore the error due to
* unsatisfiable dependencies. */
if (type == TRIGPROC_TRY) {
varbuf_destroy(&depwhynot);
return;
}
sincenothing = 0;
varbuf_end_str(&depwhynot);
notice(_("dependency problems prevent processing "
"triggers for %s:\n%s"),
pkg_name(pkg, pnaw_nonambig), depwhynot.buf);
varbuf_destroy(&depwhynot);
ohshit(_("dependency problems - leaving triggers unprocessed"));
} else if (depwhynot.used) {
varbuf_end_str(&depwhynot);
notice(_("%s: dependency problems, but processing "
"triggers anyway as you requested:\n%s"),
pkg_name(pkg, pnaw_nonambig), depwhynot.buf);
varbuf_destroy(&depwhynot);
}
if (dependtry <= 1) {
gaveup = check_trigger_cycle(pkg);
if (gaveup == pkg)
return;
}
printf(_("Processing triggers for %s (%s) ...\n"),
pkg_name(pkg, pnaw_nonambig),
versiondescribe(&pkg->installed.version, vdew_nonambig));
log_action("trigproc", pkg, &pkg->installed);
varbuf_reset(&namesarg);
for (tp = pkg->trigpend_head; tp; tp = tp->next) {
varbuf_add_char(&namesarg, ' ');
varbuf_add_str(&namesarg, tp->name);
}
varbuf_end_str(&namesarg);
/* Setting the status to half-configured
* causes modstatdb_note to clear pending triggers. */
pkg_set_status(pkg, PKG_STAT_HALFCONFIGURED);
modstatdb_note(pkg);
if (!f_noact) {
sincenothing = 0;
maintscript_postinst(pkg, "triggered",
namesarg.buf + 1, NULL);
}
post_postinst_tasks(pkg, PKG_STAT_INSTALLED);
} else {
/* In other branch is done by modstatdb_note(), from inside
* post_postinst_tasks(). */
trig_clear_awaiters(pkg);
}
}
/*
* *whynot must already have been initialized; it need not be
* empty though - it will be reset before use.
*
* If depisok returns false for ‘not OK’ it will contain a description,
* newline-terminated BUT NOT NUL-TERMINATED, of the reason.
*
* If depisok returns true it will contain garbage.
* allowunconfigd should be non-zero during the ‘Pre-Depends’ checking
* before a package is unpacked, when it is sufficient for the package
* to be unpacked provided that both the unpacked and previously-configured
* versions are acceptable.
*
* On false return (‘not OK’), *canfixbyremove refers to a package which
* if removed (dep_conflicts) or deconfigured (dep_breaks) will fix
* the problem. Caller may pass NULL for canfixbyremove and need not
* initialize *canfixbyremove.
*
* On false return (‘not OK’), *canfixbytrigaw refers to a package which
* can fix the problem if all the packages listed in Triggers-Awaited have
* their triggers processed. Caller may pass NULL for canfixbytrigaw and
* need not initialize *canfixbytrigaw.
*/
bool
depisok(struct dependency *dep, struct varbuf *whynot,
struct pkginfo **canfixbyremove, struct pkginfo **canfixbytrigaw,
bool allowunconfigd)
{
struct deppossi *possi;
struct deppossi *provider;
struct pkginfo *pkg_pos;
int nconflicts;
/* Use this buffer so that when internationalisation comes along we
* don't have to rewrite the code completely, only redo the sprintf strings
* (assuming we have the fancy argument-number-specifiers).
* Allow 250x3 for package names, versions, &c, + 250 for ourselves. */
char linebuf[1024];
assert(dep->type == dep_depends || dep->type == dep_predepends ||
dep->type == dep_breaks || dep->type == dep_conflicts ||
dep->type == dep_recommends || dep->type == dep_suggests ||
dep->type == dep_enhances);
if (canfixbyremove)
*canfixbyremove = NULL;
if (canfixbytrigaw)
*canfixbytrigaw = NULL;
/* The dependency is always OK if we're trying to remove the depend*ing*
* package. */
switch (dep->up->clientdata->istobe) {
case PKG_ISTOBE_REMOVE:
case PKG_ISTOBE_DECONFIGURE:
return true;
case PKG_ISTOBE_NORMAL:
/* Only installed packages can be make dependency problems. */
switch (dep->up->status) {
case PKG_STAT_INSTALLED:
case PKG_STAT_TRIGGERSPENDING:
case PKG_STAT_TRIGGERSAWAITED:
break;
case PKG_STAT_HALFCONFIGURED:
case PKG_STAT_UNPACKED:
case PKG_STAT_HALFINSTALLED:
if (dep->type == dep_predepends ||
dep->type == dep_conflicts ||
dep->type == dep_breaks)
break;
/* Fall through. */
case PKG_STAT_CONFIGFILES:
case PKG_STAT_NOTINSTALLED:
return true;
default:
internerr("unknown status depending '%d'", dep->up->status);
}
break;
case PKG_ISTOBE_INSTALLNEW:
case PKG_ISTOBE_PREINSTALL:
break;
default:
internerr("unknown istobe depending '%d'", dep->up->clientdata->istobe);
}
/* Describe the dependency, in case we have to moan about it. */
varbuf_reset(whynot);
varbuf_add_char(whynot, ' ');
describedepcon(whynot, dep);
varbuf_add_char(whynot, '\n');
/* TODO: Check dep_enhances as well. */
if (dep->type == dep_depends || dep->type == dep_predepends ||
dep->type == dep_recommends || dep->type == dep_suggests ) {
/* Go through the alternatives. As soon as we find one that
* we like, we return ‘true’ straight away. Otherwise, when we get to
* the end we'll have accumulated all the reasons in whynot and
* can return ‘false’. */
for (possi= dep->list; possi; possi= possi->next) {
struct deppossi_pkg_iterator *possi_iter;
possi_iter = deppossi_pkg_iter_new(possi, wpb_by_istobe);
while ((pkg_pos = deppossi_pkg_iter_next(possi_iter))) {
switch (pkg_pos->clientdata->istobe) {
case PKG_ISTOBE_REMOVE:
sprintf(linebuf, _(" %.250s is to be removed.\n"),
pkg_name(pkg_pos, pnaw_nonambig));
break;
case PKG_ISTOBE_DECONFIGURE:
sprintf(linebuf, _(" %.250s is to be deconfigured.\n"),
pkg_name(pkg_pos, pnaw_nonambig));
break;
case PKG_ISTOBE_INSTALLNEW:
if (versionsatisfied(&pkg_pos->available, possi)) {
deppossi_pkg_iter_free(possi_iter);
return true;
}
sprintf(linebuf, _(" %.250s is to be installed, but is version "
"%.250s.\n"),
pkgbin_name(pkg_pos, &pkg_pos->available, pnaw_nonambig),
versiondescribe(&pkg_pos->available.version, vdew_nonambig));
break;
case PKG_ISTOBE_NORMAL:
case PKG_ISTOBE_PREINSTALL:
switch (pkg_pos->status) {
case PKG_STAT_INSTALLED:
case PKG_STAT_TRIGGERSPENDING:
if (versionsatisfied(&pkg_pos->installed, possi)) {
deppossi_pkg_iter_free(possi_iter);
return true;
}
sprintf(linebuf, _(" %.250s is installed, but is version "
"%.250s.\n"),
pkg_name(pkg_pos, pnaw_nonambig),
versiondescribe(&pkg_pos->installed.version, vdew_nonambig));
break;
case PKG_STAT_NOTINSTALLED:
/* Don't say anything about this yet - it might be a virtual package.
* Later on, if nothing has put anything in linebuf, we know that it
* isn't and issue a diagnostic then. */
*linebuf = '\0';
break;
case PKG_STAT_TRIGGERSAWAITED:
if (canfixbytrigaw && versionsatisfied(&pkg_pos->installed, possi))
*canfixbytrigaw = pkg_pos;
/* Fall through to have a chance to return OK due to
* allowunconfigd and to fill the explanation */
case PKG_STAT_UNPACKED:
case PKG_STAT_HALFCONFIGURED:
if (allowunconfigd) {
if (!dpkg_version_is_informative(&pkg_pos->configversion)) {
sprintf(linebuf, _(" %.250s is unpacked, but has never been "
"configured.\n"),
pkg_name(pkg_pos, pnaw_nonambig));
break;
} else if (!versionsatisfied(&pkg_pos->installed, possi)) {
sprintf(linebuf, _(" %.250s is unpacked, but is version "
"%.250s.\n"),
pkg_name(pkg_pos, pnaw_nonambig),
versiondescribe(&pkg_pos->installed.version,
vdew_nonambig));
break;
} else if (!dpkg_version_relate(&pkg_pos->configversion,
possi->verrel,
&possi->version)) {
sprintf(linebuf, _(" %.250s latest configured version is "
"%.250s.\n"),
pkg_name(pkg_pos, pnaw_nonambig),
versiondescribe(&pkg_pos->configversion, vdew_nonambig));
break;
} else {
deppossi_pkg_iter_free(possi_iter);
return true;
}
}
/* Fall through. */
default:
sprintf(linebuf, _(" %.250s is %s.\n"),
pkg_name(pkg_pos, pnaw_nonambig),
gettext(statusstrings[pkg_pos->status]));
break;
}
break;
default:
internerr("unknown istobe depended '%d'", pkg_pos->clientdata->istobe);
}
varbuf_add_str(whynot, linebuf);
}
deppossi_pkg_iter_free(possi_iter);
/* See if the package we're about to install Provides it. */
for (provider = possi->ed->depended.available;
provider;
provider = provider->rev_next) {
if (provider->up->type != dep_provides) continue;
if (!pkg_virtual_deppossi_satisfied(possi, provider))
continue;
if (provider->up->up->clientdata->istobe == PKG_ISTOBE_INSTALLNEW)
return true;
}
/* Now look at the packages already on the system. */
for (provider = possi->ed->depended.installed;
provider;
provider = provider->rev_next) {
if (provider->up->type != dep_provides) continue;
if (!pkg_virtual_deppossi_satisfied(possi, provider))
continue;
switch (provider->up->up->clientdata->istobe) {
case PKG_ISTOBE_INSTALLNEW:
/* Don't pay any attention to the Provides field of the
* currently-installed version of the package we're trying
* to install. We dealt with that by using the available
* information above. */
continue;
case PKG_ISTOBE_REMOVE:
sprintf(linebuf, _(" %.250s provides %.250s but is to be removed.\n"),
pkg_name(provider->up->up, pnaw_nonambig),
possi->ed->name);
break;
case PKG_ISTOBE_DECONFIGURE:
sprintf(linebuf, _(" %.250s provides %.250s but is to be deconfigured.\n"),
pkg_name(provider->up->up, pnaw_nonambig),
possi->ed->name);
break;
case PKG_ISTOBE_NORMAL:
case PKG_ISTOBE_PREINSTALL:
if (provider->up->up->status == PKG_STAT_INSTALLED ||
provider->up->up->status == PKG_STAT_TRIGGERSPENDING)
return true;
if (provider->up->up->status == PKG_STAT_TRIGGERSAWAITED)
*canfixbytrigaw = provider->up->up;
sprintf(linebuf, _(" %.250s provides %.250s but is %s.\n"),
pkg_name(provider->up->up, pnaw_nonambig),
possi->ed->name,
gettext(statusstrings[provider->up->up->status]));
break;
default:
internerr("unknown istobe provider '%d'",
provider->up->up->clientdata->istobe);
}
varbuf_add_str(whynot, linebuf);
}
if (!*linebuf) {
/* If the package wasn't installed at all, and we haven't said
* yet why this isn't satisfied, we should say so now. */
sprintf(linebuf, _(" %.250s is not installed.\n"), possi->ed->name);
varbuf_add_str(whynot, linebuf);
}
}
return false;
} else {
/* It's conflicts or breaks. There's only one main alternative,
* but we also have to consider Providers. We return ‘false’ as soon
* as we find something that matches the conflict, and only describe
* it then. If we get to the end without finding anything we return
* ‘true’. */
possi= dep->list;
nconflicts= 0;
if (possi->ed != possi->up->up->set) {
struct deppossi_pkg_iterator *possi_iter;
/* If the package conflicts with or breaks itself it must mean
* other packages which provide the same virtual name. We
* therefore don't look at the real package and go on to the
* virtual ones. */
possi_iter = deppossi_pkg_iter_new(possi, wpb_by_istobe);
while ((pkg_pos = deppossi_pkg_iter_next(possi_iter))) {
switch (pkg_pos->clientdata->istobe) {
case PKG_ISTOBE_REMOVE:
break;
case PKG_ISTOBE_INSTALLNEW:
if (!versionsatisfied(&pkg_pos->available, possi))
break;
sprintf(linebuf, _(" %.250s (version %.250s) is to be installed.\n"),
pkgbin_name(pkg_pos, &pkg_pos->available, pnaw_nonambig),
versiondescribe(&pkg_pos->available.version, vdew_nonambig));
varbuf_add_str(whynot, linebuf);
if (!canfixbyremove) {
deppossi_pkg_iter_free(possi_iter);
return false;
}
nconflicts++;
*canfixbyremove = pkg_pos;
break;
case PKG_ISTOBE_DECONFIGURE:
if (dep->type == dep_breaks)
break; /* Already deconfiguring this. */
/* Fall through. */
case PKG_ISTOBE_NORMAL:
case PKG_ISTOBE_PREINSTALL:
switch (pkg_pos->status) {
case PKG_STAT_NOTINSTALLED:
case PKG_STAT_CONFIGFILES:
break;
case PKG_STAT_HALFINSTALLED:
case PKG_STAT_UNPACKED:
case PKG_STAT_HALFCONFIGURED:
if (dep->type == dep_breaks)
break; /* No problem. */
case PKG_STAT_INSTALLED:
case PKG_STAT_TRIGGERSPENDING:
case PKG_STAT_TRIGGERSAWAITED:
if (!versionsatisfied(&pkg_pos->installed, possi))
break;
sprintf(linebuf, _(" %.250s (version %.250s) is present and %s.\n"),
pkg_name(pkg_pos, pnaw_nonambig),
versiondescribe(&pkg_pos->installed.version, vdew_nonambig),
gettext(statusstrings[pkg_pos->status]));
varbuf_add_str(whynot, linebuf);
if (!canfixbyremove) {
deppossi_pkg_iter_free(possi_iter);
return false;
}
nconflicts++;
*canfixbyremove = pkg_pos;
}
break;
default:
internerr("unknown istobe conflict '%d'", pkg_pos->clientdata->istobe);
}
}
deppossi_pkg_iter_free(possi_iter);
}
/* See if the package we're about to install Provides it. */
for (provider = possi->ed->depended.available;
provider;
provider = provider->rev_next) {
if (provider->up->type != dep_provides) continue;
if (provider->up->up->clientdata->istobe != PKG_ISTOBE_INSTALLNEW)
continue;
if (provider->up->up->set == dep->up->set)
continue; /* Conflicts and provides the same. */
if (!pkg_virtual_deppossi_satisfied(possi, provider))
continue;
sprintf(linebuf, _(" %.250s provides %.250s and is to be installed.\n"),
pkgbin_name(provider->up->up, &provider->up->up->available,
pnaw_nonambig), possi->ed->name);
varbuf_add_str(whynot, linebuf);
/* We can't remove the one we're about to install: */
if (canfixbyremove)
*canfixbyremove = NULL;
return false;
}
/* Now look at the packages already on the system. */
for (provider = possi->ed->depended.installed;
provider;
provider = provider->rev_next) {
if (provider->up->type != dep_provides) continue;
if (provider->up->up->set == dep->up->set)
continue; /* Conflicts and provides the same. */
if (!pkg_virtual_deppossi_satisfied(possi, provider))
continue;
switch (provider->up->up->clientdata->istobe) {
case PKG_ISTOBE_INSTALLNEW:
/* Don't pay any attention to the Provides field of the
* currently-installed version of the package we're trying
* to install. We dealt with that package by using the
* available information above. */
continue;
case PKG_ISTOBE_REMOVE:
continue;
case PKG_ISTOBE_DECONFIGURE:
if (dep->type == dep_breaks)
continue; /* Already deconfiguring. */
case PKG_ISTOBE_NORMAL:
case PKG_ISTOBE_PREINSTALL:
switch (provider->up->up->status) {
case PKG_STAT_NOTINSTALLED:
case PKG_STAT_CONFIGFILES:
continue;
case PKG_STAT_HALFINSTALLED:
case PKG_STAT_UNPACKED:
case PKG_STAT_HALFCONFIGURED:
if (dep->type == dep_breaks)
break; /* No problem. */
case PKG_STAT_INSTALLED:
case PKG_STAT_TRIGGERSPENDING:
case PKG_STAT_TRIGGERSAWAITED:
sprintf(linebuf,
_(" %.250s provides %.250s and is present and %s.\n"),
pkg_name(provider->up->up, pnaw_nonambig), possi->ed->name,
gettext(statusstrings[provider->up->up->status]));
varbuf_add_str(whynot, linebuf);
if (!canfixbyremove)
return false;
nconflicts++;
*canfixbyremove= provider->up->up;
break;
}
break;
default:
internerr("unknown istobe conflict provider '%d'",
provider->up->up->clientdata->istobe);
}
}
if (!nconflicts)
return true;
if (nconflicts > 1)
*canfixbyremove = NULL;
return false;
} /* if (dependency) {...} else {...} */
}
/**
* Cycle breaking works recursively down the package dependency tree.
*
* ‘sofar’ is the list of packages we've descended down already - if we
* encounter any of its packages again in a dependency we have found a cycle.
*/
static bool
findbreakcyclerecursive(struct pkginfo *pkg, struct cyclesofarlink *sofar)
{
struct cyclesofarlink thislink, *sol;
struct dependency *dep;
struct deppossi *possi, *providelink;
struct pkginfo *provider, *pkg_pos;
if (pkg->clientdata->color == PKG_CYCLE_BLACK)
return false;
pkg->clientdata->color = PKG_CYCLE_GRAY;
if (debug_has_flag(dbg_depcondetail)) {
struct varbuf str_pkgs = VARBUF_INIT;
for (sol = sofar; sol; sol = sol->prev) {
varbuf_add_str(&str_pkgs, " <- ");
varbuf_add_pkgbin_name(&str_pkgs, sol->pkg, &sol->pkg->installed, pnaw_nonambig);
}
varbuf_end_str(&str_pkgs);
debug(dbg_depcondetail, "findbreakcyclerecursive %s %s",
pkg_name(pkg, pnaw_always), str_pkgs.buf);
varbuf_destroy(&str_pkgs);
}
thislink.pkg= pkg;
thislink.prev = sofar;
thislink.possi = NULL;
for (dep= pkg->installed.depends; dep; dep= dep->next) {
if (dep->type != dep_depends && dep->type != dep_predepends) continue;
for (possi= dep->list; possi; possi= possi->next) {
struct deppossi_pkg_iterator *possi_iter;
/* Don't find the same cycles again. */
if (possi->cyclebreak) continue;
thislink.possi= possi;
possi_iter = deppossi_pkg_iter_new(possi, wpb_installed);
while ((pkg_pos = deppossi_pkg_iter_next(possi_iter)))
if (foundcyclebroken(&thislink, sofar, pkg_pos, possi)) {
deppossi_pkg_iter_free(possi_iter);
return true;
}
deppossi_pkg_iter_free(possi_iter);
/* Right, now we try all the providers ... */
for (providelink = possi->ed->depended.installed;
providelink;
providelink = providelink->rev_next) {
if (providelink->up->type != dep_provides) continue;
provider= providelink->up->up;
if (provider->clientdata->istobe == PKG_ISTOBE_NORMAL)
continue;
/* We don't break things at ‘provides’ links, so ‘possi’ is
* still the one we use. */
if (foundcyclebroken(&thislink, sofar, provider, possi))
return true;
}
}
}
/* Nope, we didn't find a cycle to break. */
pkg->clientdata->color = PKG_CYCLE_BLACK;
return false;
}