GNUTLS: Forward-port release/3.5 improvements

[solanum.git] / librb / src / unix.c

diff --git a/librb/src/unix.c b/librb/src/unix.c
index c4ba29160ea9d9e8a24a3027d980f32c886c11cd..0fab90a9c26eb2dba138ad3d80c1abb682886748 100644 (file)
--- a/librb/src/unix.c
+++ b/librb/src/unix.c
@@ -21,24 +21,33 @@
  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301
  *  USA
  *
- *  $Id: unix.c 26180 2008-11-11 00:00:12Z androsyn $
  */
-#include <libratbox_config.h>
-#include <ratbox_lib.h>
 
+#include <librb_config.h>
+#include <rb_lib.h>
 
 #ifndef _WIN32
 
 #include <sys/wait.h>
 
-
-#if defined(HAVE_SPAWN_H) && defined(HAVE_POSIX_SPAWN)
-#include <spawn.h>
+#ifdef HAVE_DLINFO
+# include <link.h>
+# include <dlfcn.h>
+#endif
 
 #ifdef __APPLE__
+#include <mach-o/dyld.h>
 #include <crt_externs.h>
 #endif
 
+#if defined(__FreeBSD__) || defined(__DragonFly__)
+#include <sys/types.h>
+#include <sys/sysctl.h>
+#endif
+
+#if defined(HAVE_SPAWN_H) && defined(HAVE_POSIX_SPAWN)
+#include <spawn.h>
+
 #ifndef __APPLE__
 extern char **environ;
 #endif
@@ -151,5 +160,45 @@ rb_getpid(void)
        return getpid();
 }
 
+const char *
+rb_path_to_self(void)
+{
+       static char path_buf[4096];
+       size_t path_len = sizeof(path_buf);
+#if defined(HAVE_GETEXECNAME)
+       char *s = getexecname();
+       if (s == NULL)
+               return NULL;
+       realpath(s, path_buf);
+       return path_buf;
+#elif defined(__linux__) || (defined(__FreeBSD__) && !defined(KERN_PROC_PATHNAME))
+       if (readlink("/proc/self/exe", path_buf, path_len) != -1)
+               return path_buf;
+       return NULL;
+#elif defined(__FreeBSD__) || defined(__DragonFly__)
+       int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1 };
+       if (sysctl(mib, 4, path_buf, &path_len, NULL, 0) == 0)
+               return path_buf;
+       return NULL;
+#elif defined(HAVE_DLINFO)
+       struct link_map *map = NULL;
+       dlinfo(RTLD_SELF, RTLD_DI_LINKMAP, &map);
+       if (map == NULL)
+               return NULL;
+       realpath(map->l_name, path_buf);
+       return path_buf;
+#elif defined(__APPLE__)
+       char tmp_path[4096];
+       uint32_t pathlen = 4096;
+
+       if (_NSGetExecutablePath(tmp_path, &pathlen) < 0)
+               return NULL;
+
+       realpath(tmp_path, path_buf);
+       return path_buf;
+#else
+       return NULL;
+#endif
+}
 
 #endif /* !WIN32 */