From: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Tue, 25 Aug 2020 20:22:09 +0000 (-0300)
Subject: Use LFS readdir in generic POSIX getcwd [BZ# 22899]
X-Git-Tag: glibc-2.33~515
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=804200923df4f40dbde09ea708869d252caba288;p=thirdparty%2Fglibc.git

Use LFS readdir in generic POSIX getcwd [BZ# 22899]

Checked on x86_64-linux-gnu and i686-linux-gnu.
---

diff --git a/sysdeps/posix/getcwd.c b/sysdeps/posix/getcwd.c
index e466a4a8bf8..066aab7de7f 100644
--- a/sysdeps/posix/getcwd.c
+++ b/sysdeps/posix/getcwd.c
@@ -97,11 +97,12 @@
 # define __lstat64 lstat
 # define __closedir closedir
 # define __opendir opendir
-# define __readdir readdir
+# define __readdir64 readdir
 # define __fdopendir fdopendir
 # define __openat openat
 # define __rewinddir rewinddir
 # define __openat64 openat
+# define dirent64 dirent
 #else
 # include <not-cancel.h>
 #endif
@@ -260,7 +261,7 @@ __getcwd_generic (char *buf, size_t size)
 
   while (!(thisdev == rootdev && thisino == rootino))
     {
-      struct dirent *d;
+      struct dirent64 *d;
       dev_t dotdev;
       ino_t dotino;
       bool mount_point;
@@ -313,7 +314,7 @@ __getcwd_generic (char *buf, size_t size)
           /* Clear errno to distinguish EOF from error if readdir returns
              NULL.  */
           __set_errno (0);
-          d = __readdir (dirstream);
+          d = __readdir64 (dirstream);
 
           /* When we've iterated through all directory entries without finding
              one with a matching d_ino, rewind the stream and consider each
@@ -326,7 +327,7 @@ __getcwd_generic (char *buf, size_t size)
             {
               use_d_ino = false;
               __rewinddir (dirstream);
-              d = __readdir (dirstream);
+              d = __readdir64 (dirstream);
             }
 
           if (d == NULL)
diff --git a/sysdeps/unix/sysv/linux/readdir64.c b/sysdeps/unix/sysv/linux/readdir64.c
index 7d4b0001b3a..170a889c519 100644
--- a/sysdeps/unix/sysv/linux/readdir64.c
+++ b/sysdeps/unix/sysv/linux/readdir64.c
@@ -42,7 +42,11 @@ weak_alias (__readdir64, readdir)
 /* The compat code expects the 'struct direct' with d_ino being a __ino_t
    instead of __ino64_t.  */
 # include <shlib-compat.h>
+# if IS_IN(rtld)
+weak_alias (__readdir64, readdir64)
+# else
 versioned_symbol (libc, __readdir64, readdir64, GLIBC_2_2);
+# endif
 # if SHLIB_COMPAT(libc, GLIBC_2_1, GLIBC_2_2)
 #  include <olddirent.h>
 #  define __READDIR   attribute_compat_text_section __old_readdir64