79 lines
1.6 KiB
C
79 lines
1.6 KiB
C
#include <dlfcn.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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int
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main (void)
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{
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void *a;
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void *b;
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void *c;
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void *d;
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char *wd;
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char *base;
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char *buf;
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/* Change to the binary directory. */
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if (chdir (OBJDIR) != 0)
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{
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printf ("cannot change to `%s': %m", OBJDIR);
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exit (EXIT_FAILURE);
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}
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wd = getcwd (NULL, 0);
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base = basename (wd);
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buf = alloca (strlen (wd) + strlen (base) + 5 + sizeof "testobj1.so");
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printf ("loading `%s'\n", "./testobj1.so");
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a = dlopen ("./testobj1.so", RTLD_NOW);
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if (a == NULL)
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{
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printf ("cannot load `./testobj1.so': %s\n", dlerror ());
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exit (EXIT_FAILURE);
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}
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stpcpy (stpcpy (stpcpy (buf, "../"), base), "/testobj1.so");
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printf ("loading `%s'\n", buf);
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b = dlopen (buf, RTLD_NOW);
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if (b == NULL)
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{
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printf ("cannot load `%s': %s\n", buf, dlerror ());
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exit (EXIT_FAILURE);
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}
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stpcpy (stpcpy (buf, wd), "/testobj1.so");
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printf ("loading `%s'\n", buf);
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c = dlopen (buf, RTLD_NOW);
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if (c == NULL)
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{
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printf ("cannot load `%s': %s\n", buf, dlerror ());
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exit (EXIT_FAILURE);
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}
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stpcpy (stpcpy (stpcpy (stpcpy (buf, wd), "/../"), base), "/testobj1.so");
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printf ("loading `%s'\n", buf);
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d = dlopen (buf, RTLD_NOW);
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if (d == NULL)
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{
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printf ("cannot load `%s': %s\n", buf, dlerror ());
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exit (EXIT_FAILURE);
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}
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if (a != b || b != c || c != d)
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{
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puts ("shared object loaded more than once");
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exit (EXIT_FAILURE);
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}
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return 0;
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}
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int
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foo (int a)
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{
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return a;
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}
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