dladdr(3) is in POSIX-2024, though the structure type was renamed

to match Solaris and _not_ match glibc/BSDs and no one caught it
before publication.  Provide the new name but keep providing the
existing names under the same conditions as before.  Update #include
visibility and dlfcn(3) manpage and add restrict qualifiers.

ok deraadt@

diff --git a/include/dlfcn.h b/include/dlfcn.h
index 5423bb2..40d6a53 100644 (file)
--- a/include/dlfcn.h
+++ b/include/dlfcn.h
@@ -1,4 +1,4 @@
-/*     $OpenBSD: dlfcn.h,v 1.16 2022/08/20 17:39:22 tb Exp $   */
+/*     $OpenBSD: dlfcn.h,v 1.17 2024/09/01 04:27:45 guenther Exp $     */
 /*     $NetBSD: dlfcn.h,v 1.2 1995/06/05 19:38:00 pk Exp $     */
 
 /*
@@ -52,17 +52,24 @@
 #define        RTLD_DEFAULT    ((void *) -2)   /* Use default search algorithm. */
 #define        RTLD_SELF       ((void *) -3)   /* Search the caller itself. */
 
-#if __BSD_VISIBLE
-
+#if __BSD_VISIBLE || __POSIX_VISIBLE >= 202405
 /*
  * Structure filled in by dladdr().
  */
-typedef        struct dl_info {
+typedef        struct
+#if __BSD_VISIBLE
+       dl_info
+#endif
+{
        const char      *dli_fname;     /* Pathname of shared object. */
        void            *dli_fbase;     /* Base address of shared object. */
        const char      *dli_sname;     /* Name of nearest symbol. */
        void            *dli_saddr;     /* Address of nearest symbol. */
-} Dl_info;
+} Dl_info_t;
+#endif /* __BSD_VISIBLE || __POSIX_VISIBLE >= 202405 */
+
+#if __BSD_VISIBLE
+typedef Dl_info_t Dl_info;
 
 /*
  * dlctl() commands
@@ -90,8 +97,11 @@ int  dlclose(void *);
 void   *dlsym(void *__restrict, const char *__restrict);
 char   *dlerror(void);
 
+#if __BSD_VISIBLE || __POSIX_VISIBLE >= 202405
+int    dladdr(const void *__restrict, Dl_info_t *__restrict);
+#endif
+
 #if __BSD_VISIBLE
-int    dladdr(const void *, Dl_info *);
 int    dlctl(void *, int, void *);
 #endif /* __BSD_VISIBLE */
 

diff --git a/share/man/man3/dlfcn.3 b/share/man/man3/dlfcn.3
index b839597..fb24e04 100644 (file)
--- a/share/man/man3/dlfcn.3
+++ b/share/man/man3/dlfcn.3
@@ -1,4 +1,4 @@
-.\"    $OpenBSD: dlfcn.3,v 1.35 2023/08/26 01:38:28 deraadt Exp $
+.\"    $OpenBSD: dlfcn.3,v 1.36 2024/09/01 04:27:45 guenther Exp $
 .\"    $NetBSD: dlfcn.3,v 1.3 1996/01/09 19:43:34 pk Exp $
 .\"
 .\" Copyright (c) 1995 Paul Kranenburg
@@ -29,7 +29,7 @@
 .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 .\"
-.Dd $Mdocdate: August 26 2023 $
+.Dd $Mdocdate: September 1 2024 $
 .Dt DLOPEN 3
 .Os
 .Sh NAME
@@ -301,6 +301,16 @@ being returned.
 .Xr ld 1 ,
 .Xr ld.so 1 ,
 .Xr elf 5
+.Sh STANDARDS
+The
+.Fn dladdr ,
+.Fn dlclose ,
+.Fn dlerror ,
+.Fn dlopen ,
+and
+.Fn dlsym
+functions conform to
+.St -p1003.1-2024 .
 .Sh HISTORY
 Some of the
 .Nm dl*