Patchwork [7/7] Consolidate getdirentries{64} implementation

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Submitter Adhemerval Zanella Netto
Date March 2, 2018, 6:59 p.m.
Message ID <1520017165-15830-7-git-send-email-adhemerval.zanella@linaro.org>
Download mbox | patch
Permalink /patch/26160/
State New
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Comments

Adhemerval Zanella Netto - March 2, 2018, 6:59 p.m.
This patch consolidates Linux getdirentries{64} implementation on just
the default sysdeps/unix/sysv/linux/getdirentries{64} ones.  The default
implementation handles the Linux requirements:

  * getdirentries is only built for _DIRENT_MATCHES_DIRENT64 being 0.

  * getdirentries64 is always built and aliased to getdents for ABIs
    that define _DIRENT_MATCHES_DIRENT64 to 1.

Checked on aarch64-linux-gnu, x86_64-linux-gnu, i686-linux-gnu,
sparcv9-linux-gnu, sparc64-linux-gnu, powerpc-linux-gnu, and
powerpc64le-linux-gnu.

	* sysdeps/unix/sysv/linux/getdirentries.c (getdirentries): Build iff
	_DIRENT_MATCHES_DIRENT64 is not defined.
	* sysdeps/unix/sysv/linux/getdirentries64.c (getdirentries64): Open
	implementation and alias to getdirentries if _DIRENT_MATCHES_DIRENT64
	is defined.
	* sysdeps/unix/sysv/linux/wordsize-64/getdirentries.c: Remove file.
	* sysdeps/unix/sysv/linux/wordsize-64/getdirentries64.c: Remove file.
---
 ChangeLog                                          |  8 +++++
 sysdeps/unix/sysv/linux/getdirentries.c            | 21 +++++------
 sysdeps/unix/sysv/linux/getdirentries64.c          | 41 ++++++++++++++++++++--
 .../unix/sysv/linux/wordsize-64/getdirentries.c    |  3 --
 .../unix/sysv/linux/wordsize-64/getdirentries64.c  |  1 -
 5 files changed, 54 insertions(+), 20 deletions(-)
 delete mode 100644 sysdeps/unix/sysv/linux/wordsize-64/getdirentries.c
 delete mode 100644 sysdeps/unix/sysv/linux/wordsize-64/getdirentries64.c
Adhemerval Zanella Netto - April 25, 2018, 7:45 p.m.
I will commit this shortly if no one opposes it.

On 02/03/2018 15:59, Adhemerval Zanella wrote:
> This patch consolidates Linux getdirentries{64} implementation on just
> the default sysdeps/unix/sysv/linux/getdirentries{64} ones.  The default
> implementation handles the Linux requirements:
> 
>   * getdirentries is only built for _DIRENT_MATCHES_DIRENT64 being 0.
> 
>   * getdirentries64 is always built and aliased to getdents for ABIs
>     that define _DIRENT_MATCHES_DIRENT64 to 1.
> 
> Checked on aarch64-linux-gnu, x86_64-linux-gnu, i686-linux-gnu,
> sparcv9-linux-gnu, sparc64-linux-gnu, powerpc-linux-gnu, and
> powerpc64le-linux-gnu.
> 
> 	* sysdeps/unix/sysv/linux/getdirentries.c (getdirentries): Build iff
> 	_DIRENT_MATCHES_DIRENT64 is not defined.
> 	* sysdeps/unix/sysv/linux/getdirentries64.c (getdirentries64): Open
> 	implementation and alias to getdirentries if _DIRENT_MATCHES_DIRENT64
> 	is defined.
> 	* sysdeps/unix/sysv/linux/wordsize-64/getdirentries.c: Remove file.
> 	* sysdeps/unix/sysv/linux/wordsize-64/getdirentries64.c: Remove file.
> ---
>  ChangeLog                                          |  8 +++++
>  sysdeps/unix/sysv/linux/getdirentries.c            | 21 +++++------
>  sysdeps/unix/sysv/linux/getdirentries64.c          | 41 ++++++++++++++++++++--
>  .../unix/sysv/linux/wordsize-64/getdirentries.c    |  3 --
>  .../unix/sysv/linux/wordsize-64/getdirentries64.c  |  1 -
>  5 files changed, 54 insertions(+), 20 deletions(-)
>  delete mode 100644 sysdeps/unix/sysv/linux/wordsize-64/getdirentries.c
>  delete mode 100644 sysdeps/unix/sysv/linux/wordsize-64/getdirentries64.c
> 
> diff --git a/sysdeps/unix/sysv/linux/getdirentries.c b/sysdeps/unix/sysv/linux/getdirentries.c
> index bc40292..23f626b 100644
> --- a/sysdeps/unix/sysv/linux/getdirentries.c
> +++ b/sysdeps/unix/sysv/linux/getdirentries.c
> @@ -16,26 +16,21 @@
>     <http://www.gnu.org/licenses/>.  */
>  
>  #include <dirent.h>
> -#include <unistd.h>
> -
> -#ifndef GETDIRENTRIES
> -# define GETDIRENTRIES getdirentries
> -# define __GETDENTS __getdents
> -#else
> -# define off_t off64_t
> -# define __lseek __lseek64
> -#endif
> +
> +#if !_DIRENT_MATCHES_DIRENT64
> +# include <unistd.h>
>  
>  ssize_t
> -GETDIRENTRIES (int fd, char *buf, size_t nbytes, off_t *basep)
> +getdirentries (int fd, char *buf, size_t nbytes, off_t *basep)
>  {
> -  off_t base = __lseek (fd, (off_t) 0, SEEK_CUR);
> -  ssize_t result;
> +  off_t base = __lseek (fd, 0, SEEK_CUR);
>  
> -  result = __GETDENTS (fd, buf, nbytes);
> +  ssize_t result = __getdents (fd, buf, nbytes);
>  
>    if (result != -1)
>      *basep = base;
>  
>    return result;
>  }
> +
> +#endif
> diff --git a/sysdeps/unix/sysv/linux/getdirentries64.c b/sysdeps/unix/sysv/linux/getdirentries64.c
> index e486a36..c1a23a7 100644
> --- a/sysdeps/unix/sysv/linux/getdirentries64.c
> +++ b/sysdeps/unix/sysv/linux/getdirentries64.c
> @@ -1,3 +1,38 @@
> -#define GETDIRENTRIES getdirentries64
> -#define __GETDENTS __getdents64
> -#include "getdirentries.c"
> +/* Copyright (C) 1993-2018 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
> +   modify it under the terms of the GNU Lesser General Public
> +   License as published by the Free Software Foundation; either
> +   version 2.1 of the License, or (at your option) any later version.
> +
> +   The GNU C Library is distributed in the hope that it will be useful,
> +   but WITHOUT ANY WARRANTY; without even the implied warranty of
> +   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
> +   Lesser General Public License for more details.
> +
> +   You should have received a copy of the GNU Lesser General Public
> +   License along with the GNU C Library; if not, see
> +   <http://www.gnu.org/licenses/>.  */
> +
> +#define getdirentries __no_getdirentries_decl
> +#include <dirent.h>
> +#undef getdirentries
> +#include <unistd.h>
> +
> +ssize_t
> +getdirentries64 (int fd, char *buf, size_t nbytes, off64_t *basep)
> +{
> +  off64_t base = __lseek64 (fd, (off_t) 0, SEEK_CUR);
> +
> +  ssize_t result = __getdents64 (fd, buf, nbytes);
> +
> +  if (result != -1)
> +    *basep = base;
> +
> +  return result;
> +}
> +
> +#if _DIRENT_MATCHES_DIRENT64
> +weak_alias (getdirentries64, getdirentries)
> +#endif
> diff --git a/sysdeps/unix/sysv/linux/wordsize-64/getdirentries.c b/sysdeps/unix/sysv/linux/wordsize-64/getdirentries.c
> deleted file mode 100644
> index 298d1e9..0000000
> --- a/sysdeps/unix/sysv/linux/wordsize-64/getdirentries.c
> +++ /dev/null
> @@ -1,3 +0,0 @@
> -#include "../getdirentries.c"
> -
> -weak_alias (getdirentries, getdirentries64)
> diff --git a/sysdeps/unix/sysv/linux/wordsize-64/getdirentries64.c b/sysdeps/unix/sysv/linux/wordsize-64/getdirentries64.c
> deleted file mode 100644
> index 622baf0..0000000
> --- a/sysdeps/unix/sysv/linux/wordsize-64/getdirentries64.c
> +++ /dev/null
> @@ -1 +0,0 @@
> -/* Defined in getdirentries.c.  */
>

Patch

diff --git a/sysdeps/unix/sysv/linux/getdirentries.c b/sysdeps/unix/sysv/linux/getdirentries.c
index bc40292..23f626b 100644
--- a/sysdeps/unix/sysv/linux/getdirentries.c
+++ b/sysdeps/unix/sysv/linux/getdirentries.c
@@ -16,26 +16,21 @@ 
    <http://www.gnu.org/licenses/>.  */
 
 #include <dirent.h>
-#include <unistd.h>
-
-#ifndef GETDIRENTRIES
-# define GETDIRENTRIES getdirentries
-# define __GETDENTS __getdents
-#else
-# define off_t off64_t
-# define __lseek __lseek64
-#endif
+
+#if !_DIRENT_MATCHES_DIRENT64
+# include <unistd.h>
 
 ssize_t
-GETDIRENTRIES (int fd, char *buf, size_t nbytes, off_t *basep)
+getdirentries (int fd, char *buf, size_t nbytes, off_t *basep)
 {
-  off_t base = __lseek (fd, (off_t) 0, SEEK_CUR);
-  ssize_t result;
+  off_t base = __lseek (fd, 0, SEEK_CUR);
 
-  result = __GETDENTS (fd, buf, nbytes);
+  ssize_t result = __getdents (fd, buf, nbytes);
 
   if (result != -1)
     *basep = base;
 
   return result;
 }
+
+#endif
diff --git a/sysdeps/unix/sysv/linux/getdirentries64.c b/sysdeps/unix/sysv/linux/getdirentries64.c
index e486a36..c1a23a7 100644
--- a/sysdeps/unix/sysv/linux/getdirentries64.c
+++ b/sysdeps/unix/sysv/linux/getdirentries64.c
@@ -1,3 +1,38 @@ 
-#define GETDIRENTRIES getdirentries64
-#define __GETDENTS __getdents64
-#include "getdirentries.c"
+/* Copyright (C) 1993-2018 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
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#define getdirentries __no_getdirentries_decl
+#include <dirent.h>
+#undef getdirentries
+#include <unistd.h>
+
+ssize_t
+getdirentries64 (int fd, char *buf, size_t nbytes, off64_t *basep)
+{
+  off64_t base = __lseek64 (fd, (off_t) 0, SEEK_CUR);
+
+  ssize_t result = __getdents64 (fd, buf, nbytes);
+
+  if (result != -1)
+    *basep = base;
+
+  return result;
+}
+
+#if _DIRENT_MATCHES_DIRENT64
+weak_alias (getdirentries64, getdirentries)
+#endif
diff --git a/sysdeps/unix/sysv/linux/wordsize-64/getdirentries.c b/sysdeps/unix/sysv/linux/wordsize-64/getdirentries.c
deleted file mode 100644
index 298d1e9..0000000
--- a/sysdeps/unix/sysv/linux/wordsize-64/getdirentries.c
+++ /dev/null
@@ -1,3 +0,0 @@ 
-#include "../getdirentries.c"
-
-weak_alias (getdirentries, getdirentries64)
diff --git a/sysdeps/unix/sysv/linux/wordsize-64/getdirentries64.c b/sysdeps/unix/sysv/linux/wordsize-64/getdirentries64.c
deleted file mode 100644
index 622baf0..0000000
--- a/sysdeps/unix/sysv/linux/wordsize-64/getdirentries64.c
+++ /dev/null
@@ -1 +0,0 @@ 
-/* Defined in getdirentries.c.  */