src/usr.bin/ssh/misc.c - diff

Return to misc.c CVS log

Up to [local] / src / usr.bin / ssh

-version 1.183, 2023/07/14 07:44:21
+version 1.184, 2023/07/19 14:02:27
 Line 40
 Line 40
 Line 40
  #include <pwd.h>
  #include <libgen.h>
  #include <limits.h>
+ #include <nlist.h>
  #include <poll.h>
  #include <signal.h>
  #include <stdarg.h>
-Line 2813
+Line 2814
 Line 2813
 Line 2814
  ptimeout_isset(struct timespec *pt)
  {
          return pt->tv_sec != -1;
+ }
+ /*
+  * Returns zero if the library at 'path' contains symbol 's', nonzero
+  * otherwise.
+  */
+ int
+ lib_contains_symbol(const char *path, const char *s)
+ {
+         struct nlist nl[2];
+         int ret = -1, r;
+         memset(nl, 0, sizeof(nl));
+         nl[0].n_name = xstrdup(s);
+         nl[1].n_name = NULL;
+         if ((r = nlist(path, nl)) == -1) {
+                 error_f("nlist failed for %s", path);
+                 goto out;
+         }
+         if (r != 0 || nl[0].n_value == 0 || nl[0].n_type == 0) {
+                 error_f("library %s does not contain symbol %s", path, s);
+                 goto out;
+         }
+         /* success */
+         ret = 0;
+  out:
+         free(nl[0].n_name);
+         return ret;
  }