2007-08-06 Roland McGrath <roland@redhat.com>

	* sysdeps/unix/sysv/linux/dl-osinfo.h (_dl_discover_osversion):
	Use ElfW(Nhdr).

diff --git a/sysdeps/unix/sysv/linux/dl-osinfo.h b/sysdeps/unix/sysv/linux/dl-osinfo.h
index 0738501..203c828 100644 (file)
--- a/sysdeps/unix/sysv/linux/dl-osinfo.h
+++ b/sysdeps/unix/sysv/linux/dl-osinfo.h
@@ -1,5 +1,6 @@
 /* Operating system specific code for generic dynamic loader functions.  Linux.
-   Copyright (C) 2000,2001,2002,2004,2005,2006 Free Software Foundation, Inc.
+   Copyright (C) 2000,2001,2002,2004,2005,2006,2007
+       Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -51,11 +52,9 @@ _dl_discover_osversion (void)
 
       static const struct
       {
-       ElfW(Word) vendorlen;
-       ElfW(Word) datalen;
-       ElfW(Word) type;
+       ElfW(Nhdr) hdr;
        char vendor[8];
-      } expected_note = { sizeof "Linux", sizeof (ElfW(Word)), 0, "Linux" };
+      } expected_note = { { sizeof "Linux", sizeof (ElfW(Word)), 0 }, "Linux" };
       const ElfW(Phdr) *const phdr = GLRO(dl_sysinfo_map)->l_phdr;
       const ElfW(Word) phnum = GLRO(dl_sysinfo_map)->l_phnum;
       for (uint_fast16_t i = 0; i < phnum; ++i)
@@ -63,20 +62,15 @@ _dl_discover_osversion (void)
          {
            const ElfW(Addr) start = (phdr[i].p_vaddr
                                      + GLRO(dl_sysinfo_map)->l_addr);
-           const struct
-           {
-             ElfW(Word) vendorlen;
-             ElfW(Word) datalen;
-             ElfW(Word) type;
-           } *note = (const void *) start;
+           const ElfW(Nhdr) *note = (const void *) start;
            while ((ElfW(Addr)) (note + 1) - start < phdr[i].p_memsz)
              {
                if (!memcmp (note, &expected_note, sizeof expected_note))
                  return *(const ElfW(Word) *) ((const void *) note
                                                + sizeof expected_note);
-#define ROUND(len) (((len) + sizeof (ElfW(Word)) - 1) & -sizeof (ElfW(Word)))
+#define ROUND(len) (((len) + sizeof note->n_type - 1) & -sizeof note->n_type)
                note = ((const void *) (note + 1)
-                       + ROUND (note->vendorlen) + ROUND (note->datalen));
+                       + ROUND (note->n_namesz) + ROUND (note->n_descsz));
              }
          }
     }