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-rw-r--r--lib/libalpm/deps.c199
1 files changed, 124 insertions, 75 deletions
diff --git a/lib/libalpm/deps.c b/lib/libalpm/deps.c
index b967243d..b171ccc7 100644
--- a/lib/libalpm/deps.c
+++ b/lib/libalpm/deps.c
@@ -30,37 +30,21 @@
#include "alpm_list.h"
#include "util.h"
#include "log.h"
-#include "error.h"
+#include "graph.h"
#include "package.h"
#include "db.h"
#include "cache.h"
#include "handle.h"
-static pmgraph_t *_alpm_graph_new(void)
+void _alpm_dep_free(pmdepend_t *dep)
{
- pmgraph_t *graph = NULL;
-
- MALLOC(graph, sizeof(pmgraph_t), RET_ERR(PM_ERR_MEMORY, NULL));
-
- if(graph) {
- graph->state = 0;
- graph->data = NULL;
- graph->parent = NULL;
- graph->children = NULL;
- graph->childptr = NULL;
- }
- return(graph);
+ FREE(dep->name);
+ FREE(dep->version);
+ FREE(dep);
}
-static void _alpm_graph_free(void *data)
-{
- pmgraph_t *graph = data;
- alpm_list_free(graph->children);
- free(graph);
-}
-
-pmdepmissing_t *_alpm_depmiss_new(const char *target, pmdepmod_t depmod,
- const char *depname, const char *depversion)
+pmdepmissing_t *_alpm_depmiss_new(const char *target, pmdepend_t *dep,
+ const char *causingpkg)
{
pmdepmissing_t *miss;
@@ -68,24 +52,27 @@ pmdepmissing_t *_alpm_depmiss_new(const char *target, pmdepmod_t depmod,
MALLOC(miss, sizeof(pmdepmissing_t), RET_ERR(PM_ERR_MEMORY, NULL));
- strncpy(miss->target, target, PKG_NAME_LEN);
- miss->depend.mod = depmod;
- strncpy(miss->depend.name, depname, PKG_NAME_LEN);
- if(depversion) {
- strncpy(miss->depend.version, depversion, PKG_VERSION_LEN);
- } else {
- miss->depend.version[0] = 0;
- }
+ STRDUP(miss->target, target, RET_ERR(PM_ERR_MEMORY, NULL));
+ miss->depend = _alpm_dep_dup(dep);
+ STRDUP(miss->causingpkg, causingpkg, RET_ERR(PM_ERR_MEMORY, NULL));
return(miss);
}
+void _alpm_depmiss_free(pmdepmissing_t *miss)
+{
+ _alpm_dep_free(miss->depend);
+ FREE(miss->target);
+ FREE(miss->causingpkg);
+ FREE(miss);
+}
+
/* Convert a list of pmpkg_t * to a graph structure,
* with a edge for each dependency.
* Returns a list of vertices (one vertex = one package)
* (used by alpm_sortbydeps)
*/
-static alpm_list_t *_alpm_graph_init(alpm_list_t *targets)
+static alpm_list_t *dep_graph_init(alpm_list_t *targets)
{
alpm_list_t *i, *j, *k;
alpm_list_t *vertices = NULL;
@@ -121,20 +108,19 @@ static alpm_list_t *_alpm_graph_init(alpm_list_t *targets)
/* Re-order a list of target packages with respect to their dependencies.
*
- * Example (PM_TRANS_TYPE_ADD):
+ * Example (reverse == 0):
* A depends on C
* B depends on A
* Target order is A,B,C,D
*
* Should be re-ordered to C,A,B,D
*
- * mode should be either PM_TRANS_TYPE_ADD or PM_TRANS_TYPE_REMOVE. This
- * affects the dependency order sortbydeps() will use.
+ * if reverse is > 0, the dependency order will be reversed.
*
* This function returns the new alpm_list_t* target list.
*
*/
-alpm_list_t *_alpm_sortbydeps(alpm_list_t *targets, pmtranstype_t mode)
+alpm_list_t *_alpm_sortbydeps(alpm_list_t *targets, int reverse)
{
alpm_list_t *newtargs = NULL;
alpm_list_t *vertices = NULL;
@@ -149,7 +135,7 @@ alpm_list_t *_alpm_sortbydeps(alpm_list_t *targets, pmtranstype_t mode)
_alpm_log(PM_LOG_DEBUG, "started sorting dependencies\n");
- vertices = _alpm_graph_init(targets);
+ vertices = dep_graph_init(targets);
vptr = vertices;
vertex = vertices->data;
@@ -169,7 +155,7 @@ alpm_list_t *_alpm_sortbydeps(alpm_list_t *targets, pmtranstype_t mode)
pmpkg_t *vertexpkg = vertex->data;
pmpkg_t *childpkg = nextchild->data;
_alpm_log(PM_LOG_WARNING, _("dependency cycle detected:\n"));
- if(mode == PM_TRANS_TYPE_REMOVE) {
+ if(reverse) {
_alpm_log(PM_LOG_WARNING, _("%s will be removed after its %s dependency\n"), vertexpkg->name, childpkg->name);
} else {
_alpm_log(PM_LOG_WARNING, _("%s will be installed before its %s dependency\n"), vertexpkg->name, childpkg->name);
@@ -194,8 +180,8 @@ alpm_list_t *_alpm_sortbydeps(alpm_list_t *targets, pmtranstype_t mode)
_alpm_log(PM_LOG_DEBUG, "sorting dependencies finished\n");
- if(mode == PM_TRANS_TYPE_REMOVE) {
- /* we're removing packages, so reverse the order */
+ if(reverse) {
+ /* reverse the order */
alpm_list_t *tmptargs = alpm_list_reverse(newtargs);
/* free the old one */
alpm_list_free(newtargs);
@@ -217,6 +203,31 @@ static int satisfycmp(const void *pkg, const void *depend)
/** Checks dependencies and returns missing ones in a list.
* Dependencies can include versions with depmod operators.
* @param db pointer to the local package database
+ * @param targets an alpm_list_t* of dependencies strings to satisfy
+ * @return an alpm_list_t* of missing dependencies strings
+ */
+alpm_list_t SYMEXPORT *alpm_deptest(pmdb_t *db, alpm_list_t *targets)
+{
+ alpm_list_t *i, *ret = NULL;
+
+ for(i = targets; i; i = alpm_list_next(i)) {
+ pmdepend_t *dep;
+ char *target;
+
+ target = alpm_list_getdata(i);
+ dep = _alpm_splitdep(target);
+
+ if(!alpm_list_find(_alpm_db_get_pkgcache(db), dep, satisfycmp)) {
+ ret = alpm_list_add(ret, target);
+ }
+ _alpm_dep_free(dep);
+ }
+ return(ret);
+}
+
+/** Checks dependencies and returns missing ones in a list.
+ * Dependencies can include versions with depmod operators.
+ * @param db pointer to the local package database
* @param reversedeps handles the backward dependencies
* @param remove an alpm_list_t* of packages to be removed
* @param upgrade an alpm_list_t* of packages to be upgraded (remove-then-upgrade)
@@ -264,8 +275,7 @@ alpm_list_t SYMEXPORT *alpm_checkdeps(pmdb_t *db, int reversedeps,
_alpm_log(PM_LOG_DEBUG, "checkdeps: missing dependency '%s' for package '%s'\n",
missdepstring, alpm_pkg_get_name(tp));
free(missdepstring);
- miss = _alpm_depmiss_new(alpm_pkg_get_name(tp), depend->mod,
- depend->name, depend->version);
+ miss = _alpm_depmiss_new(alpm_pkg_get_name(tp), depend, "");
baddeps = alpm_list_add(baddeps, miss);
}
}
@@ -278,18 +288,18 @@ alpm_list_t SYMEXPORT *alpm_checkdeps(pmdb_t *db, int reversedeps,
pmpkg_t *lp = i->data;
for(j = alpm_pkg_get_depends(lp); j; j = j->next) {
pmdepend_t *depend = j->data;
+ pmpkg_t *causingpkg = alpm_list_find(modified, depend, satisfycmp);
/* we won't break this depend, if it is already broken, we ignore it */
/* 1. check upgrade list for satisfiers */
/* 2. check dblist for satisfiers */
- if(alpm_list_find(modified, depend, satisfycmp) &&
+ if(causingpkg &&
!alpm_list_find(upgrade, depend, satisfycmp) &&
!alpm_list_find(dblist, depend, satisfycmp)) {
char *missdepstring = alpm_dep_get_string(depend);
_alpm_log(PM_LOG_DEBUG, "checkdeps: transaction would break '%s' dependency of '%s'\n",
missdepstring, alpm_pkg_get_name(lp));
free(missdepstring);
- miss = _alpm_depmiss_new(lp->name, depend->mod,
- depend->name, depend->version);
+ miss = _alpm_depmiss_new(lp->name, depend, alpm_pkg_get_name(causingpkg));
baddeps = alpm_list_add(baddeps, miss);
}
}
@@ -356,7 +366,7 @@ int SYMEXPORT alpm_depcmp(pmpkg_t *pkg, pmdepend_t *dep)
return(satisfy);
}
-pmdepend_t SYMEXPORT *alpm_splitdep(const char *depstring)
+pmdepend_t *_alpm_splitdep(const char *depstring)
{
pmdepend_t *depend;
char *ptr = NULL;
@@ -365,9 +375,9 @@ pmdepend_t SYMEXPORT *alpm_splitdep(const char *depstring)
if(depstring == NULL) {
return(NULL);
}
- newstr = strdup(depstring);
+ STRDUP(newstr, depstring, RET_ERR(PM_ERR_MEMORY, NULL));
- MALLOC(depend, sizeof(pmdepend_t), return(NULL));
+ CALLOC(depend, 1, sizeof(pmdepend_t), RET_ERR(PM_ERR_MEMORY, NULL));
/* Find a version comparator if one exists. If it does, set the type and
* increment the ptr accordingly so we can copy the right strings. */
@@ -391,25 +401,36 @@ pmdepend_t SYMEXPORT *alpm_splitdep(const char *depstring)
depend->mod = PM_DEP_MOD_GT;
*ptr = '\0';
ptr += 1;
-
} else {
- /* no version specified - copy in the name and return it */
+ /* no version specified - copy the name and return it */
depend->mod = PM_DEP_MOD_ANY;
- strncpy(depend->name, newstr, PKG_NAME_LEN);
- depend->version[0] = '\0';
+ STRDUP(depend->name, newstr, RET_ERR(PM_ERR_MEMORY, NULL));
+ depend->version = NULL;
free(newstr);
return(depend);
}
/* if we get here, we have a version comparator, copy the right parts
* to the right places */
- strncpy(depend->name, newstr, PKG_NAME_LEN);
- strncpy(depend->version, ptr, PKG_VERSION_LEN);
+ STRDUP(depend->name, newstr, RET_ERR(PM_ERR_MEMORY, NULL));
+ STRDUP(depend->version, ptr, RET_ERR(PM_ERR_MEMORY, NULL));
free(newstr);
return(depend);
}
+pmdepend_t *_alpm_dep_dup(const pmdepend_t *dep)
+{
+ pmdepend_t *newdep;
+ CALLOC(newdep, 1, sizeof(pmdepend_t), RET_ERR(PM_ERR_MEMORY, NULL));
+
+ STRDUP(newdep->name, dep->name, RET_ERR(PM_ERR_MEMORY, NULL));
+ STRDUP(newdep->version, dep->version, RET_ERR(PM_ERR_MEMORY, NULL));
+ newdep->mod = dep->mod;
+
+ return(newdep);
+}
+
/* These parameters are messy. We check if this package, given a list of
* targets and a db is safe to remove. We do NOT remove it if it is in the
* target list, or if if the package was explictly installed and
@@ -417,7 +438,7 @@ pmdepend_t SYMEXPORT *alpm_splitdep(const char *depstring)
static int can_remove_package(pmdb_t *db, pmpkg_t *pkg, alpm_list_t *targets,
int include_explicit)
{
- alpm_list_t *i, *requiredby;
+ alpm_list_t *i, *j;
if(_alpm_pkg_find(alpm_pkg_get_name(pkg), targets)) {
return(0);
@@ -439,15 +460,17 @@ static int can_remove_package(pmdb_t *db, pmpkg_t *pkg, alpm_list_t *targets,
* if checkdeps detected it would break something */
/* see if other packages need it */
- requiredby = alpm_pkg_compute_requiredby(pkg);
- for(i = requiredby; i; i = i->next) {
- pmpkg_t *reqpkg = _alpm_db_get_pkgfromcache(db, i->data);
- if(reqpkg && !_alpm_pkg_find(alpm_pkg_get_name(reqpkg), targets)) {
- FREELIST(requiredby);
- return(0);
+ for(i = _alpm_db_get_pkgcache(db); i; i = i->next) {
+ pmpkg_t *lpkg = i->data;
+ for(j = alpm_pkg_get_depends(lpkg); j; j = j->next) {
+ if(alpm_depcmp(pkg, j->data)) {
+ if(!_alpm_pkg_find(lpkg->name, targets)) {
+ return(0);
+ }
+ break;
+ }
}
}
- FREELIST(requiredby);
/* it's ok to remove */
return(1);
@@ -523,7 +546,7 @@ int _alpm_resolvedeps(pmdb_t *local, alpm_list_t *dbs_sync, pmpkg_t *syncpkg,
for(i = deps; i; i = i->next) {
int found = 0;
pmdepmissing_t *miss = i->data;
- pmdepend_t *missdep = &(miss->depend);
+ pmdepend_t *missdep = alpm_miss_get_dep(miss);
pmpkg_t *sync = NULL;
/* check if one of the packages in *list already satisfies this dependency */
@@ -548,7 +571,8 @@ int _alpm_resolvedeps(pmdb_t *local, alpm_list_t *dbs_sync, pmpkg_t *syncpkg,
if(!sync) {
continue;
}
- found = alpm_depcmp(sync, missdep) && !_alpm_pkg_find(alpm_pkg_get_name(sync), remove);
+ found = alpm_depcmp(sync, missdep) && !_alpm_pkg_find(alpm_pkg_get_name(sync), remove)
+ && !_alpm_pkg_find(alpm_pkg_get_name(sync), *list);
if(!found) {
continue;
}
@@ -570,7 +594,8 @@ int _alpm_resolvedeps(pmdb_t *local, alpm_list_t *dbs_sync, pmpkg_t *syncpkg,
continue;
}
found = alpm_depcmp(sync, missdep) && strcmp(sync->name, missdep->name)
- && !_alpm_pkg_find(alpm_pkg_get_name(sync), remove);
+ && !_alpm_pkg_find(alpm_pkg_get_name(sync), remove)
+ && !_alpm_pkg_find(alpm_pkg_get_name(sync), *list);
if(!found) {
continue;
}
@@ -611,7 +636,8 @@ int _alpm_resolvedeps(pmdb_t *local, alpm_list_t *dbs_sync, pmpkg_t *syncpkg,
_alpm_log(PM_LOG_DEBUG, "finished resolving dependencies\n");
- FREELIST(deps);
+ alpm_list_free_inner(deps, (alpm_list_fn_free)_alpm_depmiss_free);
+ alpm_list_free(deps);
return(0);
@@ -627,7 +653,17 @@ const char SYMEXPORT *alpm_miss_get_target(const pmdepmissing_t *miss)
/* Sanity checks */
ASSERT(miss != NULL, return(NULL));
- return miss->target;
+ return(miss->target);
+}
+
+const char SYMEXPORT *alpm_miss_get_causingpkg(const pmdepmissing_t *miss)
+{
+ ALPM_LOG_FUNC;
+
+ /* Sanity checks */
+ ASSERT(miss != NULL, return(NULL));
+
+ return miss->causingpkg;
}
pmdepend_t SYMEXPORT *alpm_miss_get_dep(pmdepmissing_t *miss)
@@ -637,7 +673,7 @@ pmdepend_t SYMEXPORT *alpm_miss_get_dep(pmdepmissing_t *miss)
/* Sanity checks */
ASSERT(miss != NULL, return(NULL));
- return &(miss->depend);
+ return(miss->depend);
}
pmdepmod_t SYMEXPORT alpm_dep_get_mod(const pmdepend_t *dep)
@@ -647,7 +683,7 @@ pmdepmod_t SYMEXPORT alpm_dep_get_mod(const pmdepend_t *dep)
/* Sanity checks */
ASSERT(dep != NULL, return(-1));
- return dep->mod;
+ return(dep->mod);
}
const char SYMEXPORT *alpm_dep_get_name(const pmdepend_t *dep)
@@ -657,7 +693,7 @@ const char SYMEXPORT *alpm_dep_get_name(const pmdepend_t *dep)
/* Sanity checks */
ASSERT(dep != NULL, return(NULL));
- return dep->name;
+ return(dep->name);
}
const char SYMEXPORT *alpm_dep_get_version(const pmdepend_t *dep)
@@ -667,7 +703,7 @@ const char SYMEXPORT *alpm_dep_get_version(const pmdepend_t *dep)
/* Sanity checks */
ASSERT(dep != NULL, return(NULL));
- return dep->version;
+ return(dep->version);
}
/** Reverse of splitdep; make a dep string from a pmdepend_t struct.
@@ -677,7 +713,7 @@ const char SYMEXPORT *alpm_dep_get_version(const pmdepend_t *dep)
*/
char SYMEXPORT *alpm_dep_get_string(const pmdepend_t *dep)
{
- char *opr, *str = NULL;
+ char *name, *opr, *ver, *str = NULL;
size_t len;
ALPM_LOG_FUNC;
@@ -685,6 +721,12 @@ char SYMEXPORT *alpm_dep_get_string(const pmdepend_t *dep)
/* Sanity checks */
ASSERT(dep != NULL, return(NULL));
+ if(dep->name) {
+ name = dep->name;
+ } else {
+ name = "";
+ }
+
switch(dep->mod) {
case PM_DEP_MOD_ANY:
opr = "";
@@ -709,11 +751,18 @@ char SYMEXPORT *alpm_dep_get_string(const pmdepend_t *dep)
break;
}
+ if(dep->version) {
+ ver = dep->version;
+ } else {
+ ver = "";
+ }
+
/* we can always compute len and print the string like this because opr
- * and ver will be empty when PM_DEP_MOD_ANY is the depend type */
- len = strlen(dep->name) + strlen(opr) + strlen(dep->version) + 1;
+ * and ver will be empty when PM_DEP_MOD_ANY is the depend type. the
+ * reassignments above also ensure we do not do a strlen(NULL). */
+ len = strlen(name) + strlen(opr) + strlen(ver) + 1;
MALLOC(str, len, RET_ERR(PM_ERR_MEMORY, NULL));
- snprintf(str, len, "%s%s%s", dep->name, opr, dep->version);
+ snprintf(str, len, "%s%s%s", name, opr, ver);
return(str);
}
generated by cgit v1.2.3-24-g4f1b (git 2.32.0) at 2024-11-01 12:41:26 +0100