Perform global tracking of unresolved shlibs before accepting transaction.

Rather than checking per package being installed or updated, check
all installed packages to have all its shlib-requires resolved.
This commit is contained in:
Juan RP 2015-01-18 10:23:52 +01:00
parent d11230a29d
commit f9eef6aa0d
2 changed files with 79 additions and 135 deletions

3
NEWS
View File

@ -1,5 +1,8 @@
xbps-0.44 (???):
* libxbps: globally check for unresolved shared libraries before accepting
a transaction to make sure there's no broken packages.
* libxbps: abort package unpacking as soon as a file failed
to be written and return a meaningful error; close #74
https://github.com/voidlinux/xbps/issues/74

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@ -1,5 +1,5 @@
/*-
* Copyright (c) 2014 Juan Romero Pardines.
* Copyright (c) 2014-2015 Juan Romero Pardines.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@ -42,168 +42,109 @@
*
* Abort transaction if such case is found.
*/
static bool
shlib_trans_matched(xbps_array_t pkgs, const char *pkgver, const char *shlib)
static void
shlib_register(xbps_dictionary_t d, const char *shlib, const char *pkgver)
{
xbps_array_t shrequires;
xbps_dictionary_t pkgd;
const char *tract;
char *pkgname;
xbps_array_t array;
bool alloc = false;
pkgname = xbps_pkg_name(pkgver);
assert(pkgname);
if ((pkgd = xbps_find_pkg_in_array(pkgs, pkgname, NULL)) == NULL) {
free(pkgname);
return false;
if ((array = xbps_dictionary_get(d, shlib)) == NULL) {
alloc = true;
array = xbps_array_create();
xbps_dictionary_set(d, shlib, array);
}
free(pkgname);
xbps_dictionary_get_cstring_nocopy(pkgd, "transaction", &tract);
if (strcmp(tract, "update"))
return false;
shrequires = xbps_dictionary_get(pkgd, "shlib-requires");
if (!shrequires)
return false;
return xbps_match_string_in_array(shrequires, shlib);
if (!xbps_match_string_in_array(array, pkgver))
xbps_array_add_cstring_nocopy(array, pkgver);
if (alloc)
xbps_object_release(array);
}
static bool
shlib_matched(struct xbps_handle *xhp, xbps_array_t pkgs, xbps_array_t mshlibs,
const char *pkgver, const char *shlib)
static xbps_dictionary_t
collect_shlibs(struct xbps_handle *xhp, xbps_array_t pkgs, bool req)
{
xbps_array_t revdeps;
const char *shlibver;
char *pkgname, *shlibname;
bool found = true;
xbps_object_t obj;
xbps_object_iterator_t iter;
xbps_dictionary_t d;
pkgname = xbps_pkg_name(pkgver);
assert(pkgname);
revdeps = xbps_pkgdb_get_pkg_revdeps(xhp, pkgname);
free(pkgname);
if (!revdeps)
return true;
d = xbps_dictionary_create();
assert(d);
iter = xbps_dictionary_iterator(xhp->pkgdb);
assert(iter);
shlibver = strchr(shlib, '.');
shlibname = strdup(shlib);
shlibname[strlen(shlib) - strlen(shlibver)] = '\0';
assert(shlibname);
/* Iterate over its revdeps and match the provided shlib */
for (unsigned int i = 0; i < xbps_array_count(revdeps); i++) {
xbps_array_t shrequires;
while ((obj = xbps_object_iterator_next(iter))) {
xbps_array_t shobjs;
xbps_dictionary_t pkgd;
const char *trans, *rpkgver;
char *rpkgname;
const char *pkgname, *pkgver;
xbps_array_get_cstring_nocopy(revdeps, i, &rpkgver);
rpkgname = xbps_pkg_name(rpkgver);
assert(rpkgname);
pkgname = xbps_dictionary_keysym_cstring_nocopy(obj);
/*
* First check if this revdep has been queued in transaction;
* otherwise process the current installed pkg.
* If there's an update for this pkg in transaction, use it.
*/
pkgd = xbps_find_pkg_in_array(pkgs, rpkgname, NULL);
free(rpkgname);
if (pkgd) {
pkgd = xbps_find_pkg_in_array(pkgs, pkgname, "update");
if (pkgd == NULL)
pkgd = xbps_dictionary_get_keysym(xhp->pkgdb, obj);
/*
* Make sure pkg in transaction is an update.
* If pkg does not have the required obj, pass to next one.
*/
xbps_dictionary_get_cstring_nocopy(pkgd, "transaction", &trans);
if (strcmp(trans, "update"))
pkgd = NULL;
}
if (!pkgd)
pkgd = xbps_pkgdb_get_pkg(xhp, rpkgver);
shobjs = xbps_dictionary_get(pkgd,
req ? "shlib-requires" : "shlib-provides");
if (shobjs == NULL)
continue;
shrequires = xbps_dictionary_get(pkgd, "shlib-requires");
xbps_dictionary_get_cstring_nocopy(pkgd, "pkgver", &pkgver);
for (unsigned int i = 0; i < xbps_array_count(shobjs); i++) {
const char *shlib;
for (unsigned int x = 0; x < xbps_array_count(shrequires); x++) {
const char *rshlib, *rshlibver;
char *rshlibname;
xbps_array_get_cstring_nocopy(shrequires, x, &rshlib);
rshlibver = strchr(rshlib, '.');
rshlibname = strdup(rshlib);
rshlibname[strlen(rshlib) - strlen(rshlibver)] = '\0';
if ((strcmp(shlibname, rshlibname) == 0) &&
(strcmp(shlibver, rshlibver))) {
/*
* The shared library version did not match the
* installed pkg; find out if there's an update
* in the transaction with the matching version.
*/
if (!shlib_trans_matched(pkgs, rpkgver, shlib)) {
char *buf;
/* shlib not matched */
buf = xbps_xasprintf("%s breaks `%s' "
"(needs `%s%s', got '%s')",
pkgver, rpkgver, shlibname,
rshlibver, shlib);
xbps_array_add_cstring(mshlibs, buf);
free(buf);
found = false;
xbps_array_get_cstring_nocopy(shobjs, i, &shlib);
if (req)
shlib_register(d, shlib, pkgver);
else
xbps_dictionary_set_cstring_nocopy(d, shlib, pkgver);
}
}
free(rshlibname);
}
}
free(shlibname);
return found;
xbps_object_iterator_release(iter);
return d;
}
bool HIDDEN
xbps_transaction_shlibs(struct xbps_handle *xhp, xbps_array_t pkgs, xbps_array_t mshlibs)
{
xbps_object_t obj;
xbps_object_iterator_t iter;
xbps_dictionary_t shrequires, shprovides;
bool unmatched = false;
for (unsigned int i = 0; i < xbps_array_count(pkgs); i++) {
xbps_array_t shprovides;
xbps_object_t obj, pkgd;
const char *pkgver, *tract;
char *pkgname;
shrequires = collect_shlibs(xhp, pkgs, true);
shprovides = collect_shlibs(xhp, pkgs, false);
obj = xbps_array_get(pkgs, i);
/*
* If pkg does not have 'shlib-provides' obj, pass to next one.
*/
if ((shprovides = xbps_dictionary_get(obj, "shlib-provides")) == NULL)
continue;
/*
* Only process pkgs that are being updated.
*/
xbps_dictionary_get_cstring_nocopy(obj, "transaction", &tract);
if (strcmp(tract, "update"))
/* iterate over shlib-requires to find unmatched shlibs */
iter = xbps_dictionary_iterator(shrequires);
assert(iter);
while ((obj = xbps_object_iterator_next(iter))) {
xbps_array_t array;
const char *pkgver, *shlib;
char *buf;
shlib = xbps_dictionary_keysym_cstring_nocopy(obj);
if (xbps_dictionary_get(shprovides, shlib))
continue;
/*
* If there's no change in shlib-provides, pass to next one.
*/
xbps_dictionary_get_cstring_nocopy(obj, "pkgver", &pkgver);
pkgname = xbps_pkg_name(pkgver);
assert(pkgname);
pkgd = xbps_pkgdb_get_pkg(xhp, pkgname);
assert(pkgd);
free(pkgname);
if (xbps_array_equals(shprovides, xbps_dictionary_get(pkgd, "shlib-provides")))
continue;
for (unsigned int x = 0; x < xbps_array_count(shprovides); x++) {
const char *shlib;
xbps_array_get_cstring_nocopy(shprovides, x, &shlib);
/*
* Check that all shlibs provided by this pkg are used by
* its revdeps.
*/
if (!shlib_matched(xhp, pkgs, mshlibs, pkgver, shlib))
unmatched = true;
array = xbps_dictionary_get_keysym(shrequires, obj);
for (unsigned int i = 0; i < xbps_array_count(array); i++) {
xbps_array_get_cstring_nocopy(array, i, &pkgver);
buf = xbps_xasprintf("%s: broken, unresolvable "
"shlib `%s'", pkgver, shlib);
xbps_array_add_cstring(mshlibs, buf);
free(buf);
}
xbps_object_release(array);
}
xbps_object_iterator_release(iter);
xbps_object_release(shprovides);
return unmatched;
}