aboutsummaryrefslogtreecommitdiff
path: root/elf/circleload1.c
diff options
context:
space:
mode:
authorUlrich Drepper <drepper@redhat.com>2002-06-30 07:17:02 +0000
committerUlrich Drepper <drepper@redhat.com>2002-06-30 07:17:02 +0000
commit6d78cd000fac9854c589ef98a00227de5d1be610 (patch)
tree05be7d53d1a1dad7f995448640a3a96626dd3129 /elf/circleload1.c
parent95fdc6a0f61a389e92a6b84250c2286b4808b626 (diff)
downloadglibc-6d78cd000fac9854c589ef98a00227de5d1be610.zip
glibc-6d78cd000fac9854c589ef98a00227de5d1be610.tar.gz
glibc-6d78cd000fac9854c589ef98a00227de5d1be610.tar.bz2
Update.
2002-06-30 Ulrich Drepper <drepper@redhat.com> * elf/dl-lookup.c (add_dependency): It is not necessary to add dependencies if they are created between objects which are created while processing RTLD_NOW for objects loaded as part of the same dlopen call. 2002-06-14 H.J. Lu <hjl@gnu.org> * elf/Makefile (tests): Add circleload1. (modules-names): Add circlemod1, circlemod2, circlemod3, circlemod1a, circlemod2a and circlemod3a. ($(objpfx)circleload1): New target. ($(objpfx)circleload1.out): Likewise. ($(objpfx)circlemod1.so): Likewise. ($(objpfx)circlemod2.so): Likewise. ($(objpfx)circlemod1a.so): Likewise. ($(objpfx)circlemod2a.so): Likewise. * elf/circleload1.c: New file. * elf/circlemod1.c: New file. * elf/circlemod1a.c: New file. * elf/circlemod2.c: New file. * elf/circlemod2a.c: New file. * elf/circlemod3.c: New file. * elf/circlemod3a.c: New file.
Diffstat (limited to 'elf/circleload1.c')
-rw-r--r--elf/circleload1.c146
1 files changed, 146 insertions, 0 deletions
diff --git a/elf/circleload1.c b/elf/circleload1.c
new file mode 100644
index 0000000..60f8fb5
--- /dev/null
+++ b/elf/circleload1.c
@@ -0,0 +1,146 @@
+#include <dlfcn.h>
+#include <libintl.h>
+#include <link.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+static int
+check_loaded_objects (const char **loaded)
+{
+ struct link_map *lm;
+ int n;
+ int *found = NULL;
+ int errors = 0;
+
+ for (n = 0; loaded[n]; n++)
+ /* NOTHING */;
+
+ if (n)
+ {
+ found = (int *) alloca (sizeof (int) * n);
+ memset (found, 0, sizeof (int) * n);
+ }
+
+ printf(" Name\n");
+ printf(" --------------------------------------------------------\n");
+ for (lm = _r_debug.r_map; lm; lm = lm->l_next)
+ {
+ if (lm->l_name && lm->l_name[0])
+ printf(" %s, count = %d\n", lm->l_name, (int) lm->l_opencount);
+ if (lm->l_type == lt_loaded && lm->l_name)
+ {
+ int match = 0;
+ for (n = 0; loaded[n] != NULL; n++)
+ {
+ if (strcmp (basename (loaded[n]), basename (lm->l_name)) == 0)
+ {
+ found[n] = 1;
+ match = 1;
+ break;
+ }
+ }
+
+ if (match == 0)
+ {
+ ++errors;
+ printf ("ERRORS: %s is not unloaded\n", lm->l_name);
+ }
+ }
+ }
+
+ for (n = 0; loaded[n] != NULL; n++)
+ {
+ if (found[n] == 0)
+ {
+ ++errors;
+ printf ("ERRORS: %s is not loaded\n", loaded[n]);
+ }
+ }
+
+ return errors;
+}
+
+static int
+load_dso (const char **loading, int undef, int flag)
+{
+ void *obj;
+ const char *loaded[] = { NULL, NULL, NULL, NULL };
+ int errors = 0;
+ const char *errstring;
+
+ printf ("\nThis is what is in memory now:\n");
+ errors += check_loaded_objects (loaded);
+
+ printf ("Loading shared object %s: %s\n", loading [0],
+ flag == RTLD_LAZY ? "RTLD_LAZY" : "RTLD_NOW");
+ obj = dlopen (loading [0], flag);
+ if (obj == NULL)
+ {
+ if (flag == RTLD_LAZY)
+ {
+ ++errors;
+ printf ("ERRORS: dlopen shouldn't fail for RTLD_LAZY\n");
+ }
+
+ errstring = dlerror ();
+ if (strstr (errstring, "undefined symbol") == 0
+ || strstr (errstring, "circlemod2_undefined") == 0)
+ {
+ ++errors;
+ printf ("ERRORS: dlopen: `%s': Invalid error string\n",
+ errstring);
+ }
+ else
+ printf ("dlopen: %s\n", errstring);
+ }
+ else
+ {
+ if (undef && flag == RTLD_NOW)
+ {
+ ++errors;
+ printf ("ERRORS: dlopen shouldn't work for RTLD_NOW\n");
+ }
+
+ loaded[0] = loading [0];
+ loaded[1] = loading [1];
+ loaded[2] = loading [2];
+ }
+ errors += check_loaded_objects (loaded);
+
+ if (obj)
+ {
+ printf ("UnLoading shared object %s\n", loading [0]);
+ dlclose (obj);
+ loaded[0] = NULL;
+ loaded[1] = NULL;
+ loaded[2] = NULL;
+ errors += check_loaded_objects (loaded);
+ }
+
+ return errors;
+}
+
+int
+main (void)
+{
+ int errors = 0;
+ const char *loading[3];
+
+ loading [0] = "circlemod1a.so";
+ loading [1] = "circlemod2a.so";
+ loading [2] = "circlemod3a.so";
+ errors += load_dso (loading, 0, RTLD_LAZY);
+ errors += load_dso (loading, 0, RTLD_NOW);
+
+ loading [0] = "circlemod1.so";
+ loading [1] = "circlemod2.so";
+ loading [2] = "circlemod3.so";
+ errors += load_dso (loading, 1, RTLD_LAZY);
+ errors += load_dso (loading, 1, RTLD_NOW);
+
+ if (errors != 0)
+ printf ("%d errors found\n", errors);
+
+ return errors;
+}