- Add support for DT_FLAGS.

- Define various things from the most recent ELF spec.

3 files changed, 21 insertions, 1 deletions

diff --git a/libexec/rtld-elf/map_object.c b/libexec/rtld-elf/map_object.c
index 5dc6b8c..7ad9dc5 100644
--- a/libexec/rtld-elf/map_object.c
+++ b/libexec/rtld-elf/map_object.c
@@ -309,6 +309,7 @@ obj_free(Obj_Entry *obj)
 	STAILQ_REMOVE_HEAD(&obj->dagmembers, link);
 	free(elm);
     }
+    free(obj->origin_path);
     free(obj->priv);
     free(obj);
 }
diff --git a/libexec/rtld-elf/rtld.c b/libexec/rtld-elf/rtld.c
index ab40371..0dea9e6 100644
--- a/libexec/rtld-elf/rtld.c
+++ b/libexec/rtld-elf/rtld.c
@@ -602,6 +602,7 @@ digest_dynamic(Obj_Entry *obj, int early)
 	    break;
 
 	case DT_RPATH:
+	case DT_RUNPATH:	/* XXX: process separately */
 	    /*
 	     * We have to wait until later to process this, because we
 	     * might not have gotten the address of the string table yet.
@@ -628,6 +629,22 @@ digest_dynamic(Obj_Entry *obj, int early)
 	    ((Elf_Dyn*)dynp)->d_un.d_ptr = (Elf_Addr) &r_debug;
 	    break;
 
+	case DT_FLAGS:
+		if (dynp->d_un.d_val & DF_ORIGIN) {
+		    obj->origin_path = xmalloc(PATH_MAX);
+		    if (rtld_dirname(obj->path, obj->origin_path) == -1)
+			die();
+		}
+		if (dynp->d_un.d_val & DF_SYMBOLIC)
+		    obj->symbolic = true;
+		if (dynp->d_un.d_val & DF_TEXTREL)
+		    obj->textrel = true;
+		if (dynp->d_un.d_val & DF_BIND_NOW)
+		    obj->bind_now = true;
+		if (dynp->d_un.d_val & DF_STATIC_TLS)
+		    ;
+	    break;
+
 	default:
 	    if (!early) {
 		dbg("Ignoring d_tag %ld = %#lx", (long)dynp->d_tag,
@@ -1401,7 +1418,7 @@ relocate_objects(Obj_Entry *first, bool bind_now, Obj_Entry *rtldobj)
 	if (reloc_plt(obj) == -1)
 	    return -1;
 	/* Relocate the jump slots if we are doing immediate binding. */
-	if (bind_now)
+	if (obj->bind_now || bind_now)
 	    if (reloc_jmpslots(obj) == -1)
 		return -1;
 
diff --git a/libexec/rtld-elf/rtld.h b/libexec/rtld-elf/rtld.h
index 21a03c8..c145fa1 100644
--- a/libexec/rtld-elf/rtld.h
+++ b/libexec/rtld-elf/rtld.h
@@ -109,6 +109,7 @@ typedef struct Struct_Obj_Entry {
 
     struct Struct_Obj_Entry *next;
     char *path;			/* Pathname of underlying file (%) */
+    char *origin_path;		/* Directory path of origin file */
     int refcount;
     int dl_refcount;		/* Number of times loaded by dlopen */
 
@@ -153,6 +154,7 @@ typedef struct Struct_Obj_Entry {
     bool rtld;			/* True if this is the dynamic linker */
     bool textrel;		/* True if there are relocations to text seg */
     bool symbolic;		/* True if generated with "-Bsymbolic" */
+    bool bind_now;		/* True if all relocations should be made first */
     bool traced;		/* Already printed in ldd trace output */
     bool jmpslots_done;		/* Already have relocated the jump slots */
     bool init_done;		/* Already have added object to init list */