mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-21 02:10:05 +00:00
61e0617ac3
* elf/link.h (link_map): Add l_dev and l_ino. * elf/dl-load.c (_dl_map_object_from_fd): Test dev/ino of newly loaded shared object with all laoded objects. Initialize l_ino and l_dev in case it's new. * elf/rtld.c (dl_main): Explain situation is l_dev/l_ino with main object. * elf/Makefile: Compile and run new test. * elf/multiload.c: New file.
79 lines
1.6 KiB
C
79 lines
1.6 KiB
C
#include <dlfcn.h>
|
|
#include <errno.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
int
|
|
main (void)
|
|
{
|
|
void *a;
|
|
void *b;
|
|
void *c;
|
|
void *d;
|
|
char *wd;
|
|
char *base;
|
|
char *buf;
|
|
|
|
/* Change to the binary directory. */
|
|
if (chdir (OBJDIR) != 0)
|
|
{
|
|
printf ("cannot change to `%s': %m", OBJDIR);
|
|
exit (EXIT_FAILURE);
|
|
}
|
|
|
|
wd = getcwd (NULL, 0);
|
|
base = basename (wd);
|
|
buf = alloca (strlen (wd) + strlen (base) + 5 + sizeof "testobj1.so");
|
|
|
|
printf ("loading `%s'\n", "./testobj1.so");
|
|
a = dlopen ("./testobj1.so", RTLD_NOW);
|
|
if (a == NULL)
|
|
{
|
|
printf ("cannot load `./testobj1.so': %s\n", dlerror ());
|
|
exit (EXIT_FAILURE);
|
|
}
|
|
|
|
stpcpy (stpcpy (stpcpy (buf, "../"), base), "/testobj1.so");
|
|
printf ("loading `%s'\n", buf);
|
|
b = dlopen (buf, RTLD_NOW);
|
|
if (b == NULL)
|
|
{
|
|
printf ("cannot load `%s': %s\n", buf, dlerror ());
|
|
exit (EXIT_FAILURE);
|
|
}
|
|
|
|
stpcpy (stpcpy (buf, wd), "/testobj1.so");
|
|
printf ("loading `%s'\n", buf);
|
|
c = dlopen (buf, RTLD_NOW);
|
|
if (c == NULL)
|
|
{
|
|
printf ("cannot load `%s': %s\n", buf, dlerror ());
|
|
exit (EXIT_FAILURE);
|
|
}
|
|
|
|
stpcpy (stpcpy (stpcpy (stpcpy (buf, wd), "/../"), base), "/testobj1.so");
|
|
printf ("loading `%s'\n", buf);
|
|
d = dlopen (buf, RTLD_NOW);
|
|
if (d == NULL)
|
|
{
|
|
printf ("cannot load `%s': %s\n", buf, dlerror ());
|
|
exit (EXIT_FAILURE);
|
|
}
|
|
|
|
if (a != b || b != c || c != d)
|
|
{
|
|
puts ("shared object loaded more than once");
|
|
exit (EXIT_FAILURE);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
foo (int a)
|
|
{
|
|
return a;
|
|
}
|