| index : pacman | |
| Archlinux32 fork of pacman | gitolite user |
| summaryrefslogtreecommitdiff |
| -rw-r--r-- | lib/libalpm/deps.c | 180 |
diff --git a/lib/libalpm/deps.c b/lib/libalpm/deps.c index b967243d..1eebca3e 100644 --- a/lib/libalpm/deps.c +++ b/lib/libalpm/deps.c @@ -31,36 +31,21 @@ #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); -} - -static void _alpm_graph_free(void *data) -{ - pmgraph_t *graph = data; - alpm_list_free(graph->children); - free(graph); + FREE(dep->name); + FREE(dep->version); + FREE(dep); } -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 +53,27 @@ 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 +109,19 @@ 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 +136,7 @@ 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 +156,7 @@ 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 +181,8 @@ 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 +204,31 @@ 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 +276,7 @@ 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 +289,18 @@ 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 +367,7 @@ 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 +376,9 @@ 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 +402,36 @@ 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 @@ -523,7 +545,7 @@ 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 +570,8 @@ 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 +593,8 @@ 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 +635,8 @@ 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 +652,17 @@ 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 +672,7 @@ 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 +682,7 @@ 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 +692,7 @@ 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 +702,7 @@ 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 +712,7 @@ 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 +720,12 @@ 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 +750,18 @@ 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); } |