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authorUlrich Drepper <drepper@redhat.com>2004-03-01 21:34:36 +0000
committerUlrich Drepper <drepper@redhat.com>2004-03-01 21:34:36 +0000
commitafedc4afeec9bbb7f4015bae14bfea8d4d08cd24 (patch)
tree8b42eb841d9e383e7ffb0f4da43ba4c16e1d4510 /sysdeps/unix/sysv/linux/getdents.c
parentcff08c81107ae1c8b1581b5e0a534938fd67fc45 (diff)
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Update.
2004-03-01 Ulrich Drepper <drepper@redhat.com> * sysdeps/unix/sysv/linux/kernel-features.h: Add support for __ASSUME_GETDENTS32_D_TYPE. * sysdeps/unix/sysv/linux/getdents.c: For 2.6.4+ kernels you getdents syscall again since it provides d_type information. * manual/install.texi (Tools for Compilation): Autoconf 2.53 is required.
Diffstat (limited to 'sysdeps/unix/sysv/linux/getdents.c')
-rw-r--r--sysdeps/unix/sysv/linux/getdents.c49
1 files changed, 41 insertions, 8 deletions
diff --git a/sysdeps/unix/sysv/linux/getdents.c b/sysdeps/unix/sysv/linux/getdents.c
index a732afe3c5..d473486de8 100644
--- a/sysdeps/unix/sysv/linux/getdents.c
+++ b/sysdeps/unix/sysv/linux/getdents.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1993, 1995-2002, 2003 Free Software Foundation, Inc.
+/* Copyright (C) 1993, 1995-2003, 2004 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
@@ -36,14 +36,18 @@
#include "kernel-features.h"
#ifdef __NR_getdents64
-#ifndef __ASSUME_GETDENTS64_SYSCALL
-#ifndef __GETDENTS
+# ifndef __ASSUME_GETDENTS64_SYSCALL
+# ifndef __GETDENTS
/* The variable is shared between all *getdents* calls. */
int __have_no_getdents64;
-#else
+# else
extern int __have_no_getdents64;
+# endif
+# define have_no_getdents64_defined 1
+# endif
#endif
-#endif
+#ifndef have_no_getdents64_defined
+# define __have_no_getdents64 0
#endif
#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
@@ -94,13 +98,42 @@ ssize_t
internal_function
__GETDENTS (int fd, char *buf, size_t nbytes)
{
- off64_t last_offset = -1;
ssize_t retval;
+#ifdef __ASSUME_GETDENTS32_D_TYPE
+ if (sizeof (DIRENT_TYPE) == sizeof (struct dirent))
+ {
+ retval = INLINE_SYSCALL (getdents, 3, fd, CHECK_N(buf, nbytes), nbytes);
+
+ /* The kernel added the d_type value after the name. Change
+ this now. */
+ if (retval != -1)
+ {
+ union
+ {
+ struct kernel_dirent k;
+ struct dirent u;
+ } *kbuf = (void *) buf;
+
+ while ((char *) kbuf < buf + retval)
+ {
+ char d_type = *((char *) kbuf + kbuf->k.d_reclen - 1);
+ memmove (kbuf->u.d_name, kbuf->k.d_name,
+ strlen (kbuf->k.d_name) + 1);
+ kbuf->u.d_type = d_type;
+
+ kbuf = (void *) ((char *) kbuf + kbuf->k.d_reclen);
+ }
+ }
+
+ return retval;
+ }
+#endif
+
+ off64_t last_offset = -1;
+
#ifdef __NR_getdents64
-# ifndef __ASSUME_GETDENTS64_SYSCALL
if (!__have_no_getdents64)
-# endif
{
# ifndef __ASSUME_GETDENTS64_SYSCALL
int saved_errno = errno;