Author: kib
Date: Wed Oct 3 17:32:02 2018
New Revision: 339169
URL: https://svnweb.freebsd.org/changeset/base/339169
Log:
MFC r338956:
Provide refobj context when doing libmap substitution inside
search_library_path().
Modified:
stable/11/libexec/rtld-elf/rtld.c
Directory Properties:
stable/11/ (props changed)
Modified: stable/11/libexec/rtld-elf/rtld.c
==============================================================================
--- stable/11/libexec/rtld-elf/rtld.c Wed Oct 3 17:30:59 2018
(r339168)
+++ stable/11/libexec/rtld-elf/rtld.c Wed Oct 3 17:32:02 2018
(r339169)
@@ -123,7 +123,7 @@ static void objlist_remove(Objlist *, Obj_Entry *);
static int open_binary_fd(const char *argv0, bool search_in_path);
static int parse_args(char* argv[], int argc, bool *use_pathp, int *fdp);
static int parse_integer(const char *);
-static void *path_enumerate(const char *, path_enum_proc, void *);
+static void *path_enumerate(const char *, path_enum_proc, const char *, void
*);
static void print_usage(const char *argv0);
static void release_object(Obj_Entry *);
static int relocate_object_dag(Obj_Entry *root, bool bind_now,
@@ -138,7 +138,8 @@ static int rtld_dirname(const char *, char *);
static int rtld_dirname_abs(const char *, char *);
static void *rtld_dlopen(const char *name, int fd, int mode);
static void rtld_exit(void);
-static char *search_library_path(const char *, const char *, int *);
+static char *search_library_path(const char *, const char *, const char *,
+ int *);
static char *search_library_pathfds(const char *, const char *, int *);
static const void **get_program_var_addr(const char *, RtldLockState *);
static void set_program_var(const char *, const void *);
@@ -1590,8 +1591,7 @@ gnu_hash(const char *s)
static char *
find_library(const char *xname, const Obj_Entry *refobj, int *fdp)
{
- char *pathname;
- char *name;
+ char *name, *pathname, *refobj_path;
bool nodeflib, objgiven;
objgiven = refobj != NULL;
@@ -1611,6 +1611,7 @@ find_library(const char *xname, const Obj_Entry *refob
}
dbg(" Searching for \"%s\"", name);
+ refobj_path = objgiven ? refobj->path : NULL;
/*
* If refobj->rpath != NULL, then refobj->runpath is NULL. Fall
@@ -1619,52 +1620,61 @@ find_library(const char *xname, const Obj_Entry *refob
* nodeflib.
*/
if (objgiven && refobj->rpath != NULL && ld_library_path_rpath) {
- pathname = search_library_path(name, ld_library_path, fdp);
+ pathname = search_library_path(name, ld_library_path,
+ refobj_path, fdp);
if (pathname != NULL)
return (pathname);
if (refobj != NULL) {
- pathname = search_library_path(name, refobj->rpath,
fdp);
+ pathname = search_library_path(name, refobj->rpath,
+ refobj_path, fdp);
if (pathname != NULL)
return (pathname);
}
pathname = search_library_pathfds(name, ld_library_dirs, fdp);
if (pathname != NULL)
return (pathname);
- pathname = search_library_path(name, gethints(false), fdp);
+ pathname = search_library_path(name, gethints(false),
+ refobj_path, fdp);
if (pathname != NULL)
return (pathname);
- pathname = search_library_path(name, ld_standard_library_path,
fdp);
+ pathname = search_library_path(name, ld_standard_library_path,
+ refobj_path, fdp);
if (pathname != NULL)
return (pathname);
} else {
nodeflib = objgiven ? refobj->z_nodeflib : false;
if (objgiven) {
- pathname = search_library_path(name, refobj->rpath,
fdp);
+ pathname = search_library_path(name, refobj->rpath,
+ refobj->path, fdp);
if (pathname != NULL)
return (pathname);
}
if (objgiven && refobj->runpath == NULL && refobj != obj_main) {
- pathname = search_library_path(name, obj_main->rpath,
fdp);
+ pathname = search_library_path(name, obj_main->rpath,
+ refobj_path, fdp);
if (pathname != NULL)
return (pathname);
}
- pathname = search_library_path(name, ld_library_path, fdp);
+ pathname = search_library_path(name, ld_library_path,
+ refobj_path, fdp);
if (pathname != NULL)
return (pathname);
if (objgiven) {
- pathname = search_library_path(name, refobj->runpath,
fdp);
+ pathname = search_library_path(name, refobj->runpath,
+ refobj_path, fdp);
if (pathname != NULL)
return (pathname);
}
pathname = search_library_pathfds(name, ld_library_dirs, fdp);
if (pathname != NULL)
return (pathname);
- pathname = search_library_path(name, gethints(nodeflib), fdp);
+ pathname = search_library_path(name, gethints(nodeflib),
+ refobj_path, fdp);
if (pathname != NULL)
return (pathname);
if (objgiven && !nodeflib) {
pathname = search_library_path(name,
- ld_standard_library_path, fdp);
+ ld_standard_library_path, refobj_path, fdp);
if (pathname != NULL)
return (pathname);
}
@@ -1859,8 +1869,9 @@ cleanup1:
hargs.request = RTLD_DI_SERINFOSIZE;
hargs.serinfo = &hmeta;
- path_enumerate(ld_standard_library_path, fill_search_info, &sargs);
- path_enumerate(hints, fill_search_info, &hargs);
+ path_enumerate(ld_standard_library_path, fill_search_info, NULL,
+ &sargs);
+ path_enumerate(hints, fill_search_info, NULL, &hargs);
SLPinfo = xmalloc(smeta.dls_size);
hintinfo = xmalloc(hmeta.dls_size);
@@ -1878,8 +1889,9 @@ cleanup1:
hargs.serpath = &hintinfo->dls_serpath[0];
hargs.strspace = (char *)&hintinfo->dls_serpath[hmeta.dls_cnt];
- path_enumerate(ld_standard_library_path, fill_search_info, &sargs);
- path_enumerate(hints, fill_search_info, &hargs);
+ path_enumerate(ld_standard_library_path, fill_search_info, NULL,
+ &sargs);
+ path_enumerate(hints, fill_search_info, NULL, &hargs);
/*
* Now calculate the difference between two sets, by excluding
@@ -2988,7 +3000,8 @@ rtld_exit(void)
* callback on the result.
*/
static void *
-path_enumerate(const char *path, path_enum_proc callback, void *arg)
+path_enumerate(const char *path, path_enum_proc callback,
+ const char *refobj_path, void *arg)
{
const char *trans;
if (path == NULL)
@@ -3000,7 +3013,7 @@ path_enumerate(const char *path, path_enum_proc callba
char *res;
len = strcspn(path, ":;");
- trans = lm_findn(NULL, path, len);
+ trans = lm_findn(refobj_path, path, len);
if (trans)
res = callback(trans, strlen(trans), arg);
else
@@ -3059,7 +3072,8 @@ try_library_path(const char *dir, size_t dirlen, void
}
static char *
-search_library_path(const char *name, const char *path, int *fdp)
+search_library_path(const char *name, const char *path,
+ const char *refobj_path, int *fdp)
{
char *p;
struct try_library_args arg;
@@ -3073,7 +3087,7 @@ search_library_path(const char *name, const char *path
arg.buflen = PATH_MAX;
arg.fd = -1;
- p = path_enumerate(path, try_library_path, &arg);
+ p = path_enumerate(path, try_library_path, refobj_path, &arg);
*fdp = arg.fd;
free(arg.buffer);
@@ -3790,12 +3804,12 @@ do_search_info(const Obj_Entry *obj, int request, stru
_info.dls_size = __offsetof(struct dl_serinfo, dls_serpath);
_info.dls_cnt = 0;
- path_enumerate(obj->rpath, fill_search_info, &args);
- path_enumerate(ld_library_path, fill_search_info, &args);
- path_enumerate(obj->runpath, fill_search_info, &args);
- path_enumerate(gethints(obj->z_nodeflib), fill_search_info, &args);
+ path_enumerate(obj->rpath, fill_search_info, NULL, &args);
+ path_enumerate(ld_library_path, fill_search_info, NULL, &args);
+ path_enumerate(obj->runpath, fill_search_info, NULL, &args);
+ path_enumerate(gethints(obj->z_nodeflib), fill_search_info, NULL, &args);
if (!obj->z_nodeflib)
- path_enumerate(ld_standard_library_path, fill_search_info, &args);
+ path_enumerate(ld_standard_library_path, fill_search_info, NULL, &args);
if (request == RTLD_DI_SERINFOSIZE) {
@@ -3815,25 +3829,25 @@ do_search_info(const Obj_Entry *obj, int request, stru
args.strspace = (char *)&info->dls_serpath[_info.dls_cnt];
args.flags = LA_SER_RUNPATH;
- if (path_enumerate(obj->rpath, fill_search_info, &args) != NULL)
+ if (path_enumerate(obj->rpath, fill_search_info, NULL, &args) != NULL)
return (-1);
args.flags = LA_SER_LIBPATH;
- if (path_enumerate(ld_library_path, fill_search_info, &args) != NULL)
+ if (path_enumerate(ld_library_path, fill_search_info, NULL, &args) != NULL)
return (-1);
args.flags = LA_SER_RUNPATH;
- if (path_enumerate(obj->runpath, fill_search_info, &args) != NULL)
+ if (path_enumerate(obj->runpath, fill_search_info, NULL, &args) != NULL)
return (-1);
args.flags = LA_SER_CONFIG;
- if (path_enumerate(gethints(obj->z_nodeflib), fill_search_info, &args)
+ if (path_enumerate(gethints(obj->z_nodeflib), fill_search_info, NULL,
&args)
!= NULL)
return (-1);
args.flags = LA_SER_DEFAULT;
- if (!obj->z_nodeflib &&
- path_enumerate(ld_standard_library_path, fill_search_info, &args) !=
NULL)
+ if (!obj->z_nodeflib && path_enumerate(ld_standard_library_path,
+ fill_search_info, NULL, &args) != NULL)
return (-1);
return (0);
}
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