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Provide refobj context when doing libmap substitution inside
search_library_path(). This corrects the scope of libmap matches. Reported and tested by: Andreas Longwitz <longwitz@incore.de> Sponsored by: The FreeBSD Foundation Approved by: re (gjb) MFC after: 1 week
This commit is contained in:
Konstantin Belousov
parent
6c30676522
commit
d2f2e4c02d
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=338956
@ -125,7 +125,7 @@ static void objlist_remove(Objlist *, Obj_Entry *);
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static int open_binary_fd(const char *argv0, bool search_in_path);
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static int parse_args(char* argv[], int argc, bool *use_pathp, int *fdp);
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static int parse_integer(const char *);
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static void *path_enumerate(const char *, path_enum_proc, void *);
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static void *path_enumerate(const char *, path_enum_proc, const char *, void *);
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static void print_usage(const char *argv0);
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static void release_object(Obj_Entry *);
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static int relocate_object_dag(Obj_Entry *root, bool bind_now,
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@ -140,7 +140,8 @@ static int rtld_dirname(const char *, char *);
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static int rtld_dirname_abs(const char *, char *);
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static void *rtld_dlopen(const char *name, int fd, int mode);
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static void rtld_exit(void);
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static char *search_library_path(const char *, const char *, int *);
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static char *search_library_path(const char *, const char *, const char *,
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int *);
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static char *search_library_pathfds(const char *, const char *, int *);
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static const void **get_program_var_addr(const char *, RtldLockState *);
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static void set_program_var(const char *, const void *);
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@ -1576,8 +1577,7 @@ gnu_hash(const char *s)
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static char *
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find_library(const char *xname, const Obj_Entry *refobj, int *fdp)
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{
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char *pathname;
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char *name;
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char *name, *pathname, *refobj_path;
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bool nodeflib, objgiven;
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objgiven = refobj != NULL;
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@ -1597,6 +1597,7 @@ find_library(const char *xname, const Obj_Entry *refobj, int *fdp)
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}
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dbg(" Searching for \"%s\"", name);
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refobj_path = objgiven ? refobj->path : NULL;
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/*
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* If refobj->rpath != NULL, then refobj->runpath is NULL. Fall
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@ -1605,52 +1606,61 @@ find_library(const char *xname, const Obj_Entry *refobj, int *fdp)
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* nodeflib.
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*/
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if (objgiven && refobj->rpath != NULL && ld_library_path_rpath) {
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pathname = search_library_path(name, ld_library_path, fdp);
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pathname = search_library_path(name, ld_library_path,
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refobj_path, fdp);
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if (pathname != NULL)
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return (pathname);
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if (refobj != NULL) {
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pathname = search_library_path(name, refobj->rpath, fdp);
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pathname = search_library_path(name, refobj->rpath,
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refobj_path, fdp);
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if (pathname != NULL)
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return (pathname);
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}
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pathname = search_library_pathfds(name, ld_library_dirs, fdp);
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if (pathname != NULL)
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return (pathname);
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pathname = search_library_path(name, gethints(false), fdp);
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pathname = search_library_path(name, gethints(false),
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refobj_path, fdp);
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if (pathname != NULL)
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return (pathname);
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pathname = search_library_path(name, ld_standard_library_path, fdp);
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pathname = search_library_path(name, ld_standard_library_path,
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refobj_path, fdp);
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if (pathname != NULL)
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return (pathname);
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} else {
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nodeflib = objgiven ? refobj->z_nodeflib : false;
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if (objgiven) {
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pathname = search_library_path(name, refobj->rpath, fdp);
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pathname = search_library_path(name, refobj->rpath,
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refobj->path, fdp);
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if (pathname != NULL)
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return (pathname);
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}
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if (objgiven && refobj->runpath == NULL && refobj != obj_main) {
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pathname = search_library_path(name, obj_main->rpath, fdp);
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pathname = search_library_path(name, obj_main->rpath,
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refobj_path, fdp);
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if (pathname != NULL)
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return (pathname);
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}
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pathname = search_library_path(name, ld_library_path, fdp);
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pathname = search_library_path(name, ld_library_path,
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refobj_path, fdp);
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if (pathname != NULL)
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return (pathname);
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if (objgiven) {
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pathname = search_library_path(name, refobj->runpath, fdp);
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pathname = search_library_path(name, refobj->runpath,
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refobj_path, fdp);
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if (pathname != NULL)
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return (pathname);
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}
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pathname = search_library_pathfds(name, ld_library_dirs, fdp);
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if (pathname != NULL)
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return (pathname);
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pathname = search_library_path(name, gethints(nodeflib), fdp);
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pathname = search_library_path(name, gethints(nodeflib),
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refobj_path, fdp);
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if (pathname != NULL)
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return (pathname);
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if (objgiven && !nodeflib) {
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pathname = search_library_path(name,
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ld_standard_library_path, fdp);
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ld_standard_library_path, refobj_path, fdp);
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if (pathname != NULL)
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return (pathname);
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}
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@ -1845,8 +1855,9 @@ gethints(bool nostdlib)
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hargs.request = RTLD_DI_SERINFOSIZE;
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hargs.serinfo = &hmeta;
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path_enumerate(ld_standard_library_path, fill_search_info, &sargs);
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path_enumerate(hints, fill_search_info, &hargs);
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path_enumerate(ld_standard_library_path, fill_search_info, NULL,
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&sargs);
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path_enumerate(hints, fill_search_info, NULL, &hargs);
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SLPinfo = xmalloc(smeta.dls_size);
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hintinfo = xmalloc(hmeta.dls_size);
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@ -1864,8 +1875,9 @@ gethints(bool nostdlib)
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hargs.serpath = &hintinfo->dls_serpath[0];
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hargs.strspace = (char *)&hintinfo->dls_serpath[hmeta.dls_cnt];
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path_enumerate(ld_standard_library_path, fill_search_info, &sargs);
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path_enumerate(hints, fill_search_info, &hargs);
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path_enumerate(ld_standard_library_path, fill_search_info, NULL,
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&sargs);
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path_enumerate(hints, fill_search_info, NULL, &hargs);
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/*
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* Now calculate the difference between two sets, by excluding
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@ -2974,7 +2986,8 @@ rtld_exit(void)
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* callback on the result.
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*/
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static void *
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path_enumerate(const char *path, path_enum_proc callback, void *arg)
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path_enumerate(const char *path, path_enum_proc callback,
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const char *refobj_path, void *arg)
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{
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const char *trans;
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if (path == NULL)
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@ -2986,7 +2999,7 @@ path_enumerate(const char *path, path_enum_proc callback, void *arg)
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char *res;
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len = strcspn(path, ":;");
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trans = lm_findn(NULL, path, len);
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trans = lm_findn(refobj_path, path, len);
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if (trans)
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res = callback(trans, strlen(trans), arg);
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else
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@ -3045,7 +3058,8 @@ try_library_path(const char *dir, size_t dirlen, void *param)
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}
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static char *
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search_library_path(const char *name, const char *path, int *fdp)
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search_library_path(const char *name, const char *path,
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const char *refobj_path, int *fdp)
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{
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char *p;
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struct try_library_args arg;
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@ -3059,7 +3073,7 @@ search_library_path(const char *name, const char *path, int *fdp)
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arg.buflen = PATH_MAX;
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arg.fd = -1;
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p = path_enumerate(path, try_library_path, &arg);
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p = path_enumerate(path, try_library_path, refobj_path, &arg);
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*fdp = arg.fd;
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free(arg.buffer);
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@ -3776,12 +3790,12 @@ do_search_info(const Obj_Entry *obj, int request, struct dl_serinfo *info)
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_info.dls_size = __offsetof(struct dl_serinfo, dls_serpath);
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_info.dls_cnt = 0;
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path_enumerate(obj->rpath, fill_search_info, &args);
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path_enumerate(ld_library_path, fill_search_info, &args);
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path_enumerate(obj->runpath, fill_search_info, &args);
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path_enumerate(gethints(obj->z_nodeflib), fill_search_info, &args);
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path_enumerate(obj->rpath, fill_search_info, NULL, &args);
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path_enumerate(ld_library_path, fill_search_info, NULL, &args);
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path_enumerate(obj->runpath, fill_search_info, NULL, &args);
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path_enumerate(gethints(obj->z_nodeflib), fill_search_info, NULL, &args);
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if (!obj->z_nodeflib)
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path_enumerate(ld_standard_library_path, fill_search_info, &args);
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path_enumerate(ld_standard_library_path, fill_search_info, NULL, &args);
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if (request == RTLD_DI_SERINFOSIZE) {
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@ -3801,25 +3815,25 @@ do_search_info(const Obj_Entry *obj, int request, struct dl_serinfo *info)
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args.strspace = (char *)&info->dls_serpath[_info.dls_cnt];
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args.flags = LA_SER_RUNPATH;
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if (path_enumerate(obj->rpath, fill_search_info, &args) != NULL)
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if (path_enumerate(obj->rpath, fill_search_info, NULL, &args) != NULL)
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return (-1);
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args.flags = LA_SER_LIBPATH;
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if (path_enumerate(ld_library_path, fill_search_info, &args) != NULL)
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if (path_enumerate(ld_library_path, fill_search_info, NULL, &args) != NULL)
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return (-1);
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args.flags = LA_SER_RUNPATH;
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if (path_enumerate(obj->runpath, fill_search_info, &args) != NULL)
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if (path_enumerate(obj->runpath, fill_search_info, NULL, &args) != NULL)
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return (-1);
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args.flags = LA_SER_CONFIG;
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if (path_enumerate(gethints(obj->z_nodeflib), fill_search_info, &args)
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if (path_enumerate(gethints(obj->z_nodeflib), fill_search_info, NULL, &args)
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!= NULL)
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return (-1);
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args.flags = LA_SER_DEFAULT;
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if (!obj->z_nodeflib &&
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path_enumerate(ld_standard_library_path, fill_search_info, &args) != NULL)
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if (!obj->z_nodeflib && path_enumerate(ld_standard_library_path,
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fill_search_info, NULL, &args) != NULL)
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return (-1);
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return (0);
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}
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