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From 40ec9c0d2bdeee4192885f7781167afdeeee899d Mon Sep 17 00:00:00 2001
From: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Fri, 17 Apr 2020 09:59:51 -0300
Subject: [PATCH 12/14] dirent: Deprecate getdirentries
The interface has some issues:
1. It is build on top getdents on Linux and requires handling
non-LFS call using LFS getdents.
2. It is not wildly used and the non-LFS support is as problematic
as non-LFS readdir. glibc only exports the LFS getdents.
3. It is not a direct replacement over BSD since on some plataform
its signature has changed (FreeBSD 11, for instance, used to
set the offset as a 'long' and changed to 'off_t' on version 12).
The idea is to eventually move the symbols to compat ones.
---
NEWS | 6 ++++++
dirent/dirent.h | 14 ++++++++++----
sysdeps/unix/sysv/linux/Makefile | 4 ++++
3 files changed, 20 insertions(+), 4 deletions(-)
diff --git a/NEWS b/NEWS
index 4b6d9de2b5..b00c803a1c 100644
--- a/NEWS
+++ b/NEWS
@@ -25,6 +25,12 @@ Security related changes:
[Add security related changes here]
+Deprecated and removed features, and other changes affecting compatibility:
+
+* The function getdirentries is now deprecated, applications should use
+ either getdents64, readdir64 or readdir.
+
+
The following bugs are resolved with this release:
[The release manager will add the list generated by
diff --git a/dirent/dirent.h b/dirent/dirent.h
index c47d3273b2..1c299e5be8 100644
--- a/dirent/dirent.h
+++ b/dirent/dirent.h
@@ -350,29 +350,35 @@ extern int alphasort64 (const struct dirent64 **__e1,
/* Read directory entries from FD into BUF, reading at most NBYTES.
Reading starts at offset *BASEP, and *BASEP is updated with the new
position after reading. Returns the number of bytes read; zero when at
- end of directory; or -1 for errors. */
+ end of directory; or -1 for errors.
+ This is deprecated and getdents64 or readdir should be used instead. */
# ifndef __USE_FILE_OFFSET64
extern __ssize_t getdirentries (int __fd, char *__restrict __buf,
size_t __nbytes,
__off_t *__restrict __basep)
- __THROW __nonnull ((2, 4));
+ __THROW __nonnull ((2, 4))
+ __attribute_deprecated_msg__ ("Use getdents64 instead");
# else
# ifdef __REDIRECT
extern __ssize_t __REDIRECT_NTH (getdirentries,
(int __fd, char *__restrict __buf,
size_t __nbytes,
__off64_t *__restrict __basep),
- getdirentries64) __nonnull ((2, 4));
+ getdirentries64)
+ __nonnull ((2, 4))
+ __attribute_deprecated_msg__ ("Use getdents64 instead");
# else
# define getdirentries getdirentries64
# endif
# endif
# ifdef __USE_LARGEFILE64
+/* This is deprecated and getdents64 or readdir64 should be used instead. */
extern __ssize_t getdirentries64 (int __fd, char *__restrict __buf,
size_t __nbytes,
__off64_t *__restrict __basep)
- __THROW __nonnull ((2, 4));
+ __THROW __nonnull ((2, 4))
+ __attribute_deprecated_msg__ ("Use getdents64 instead");
# endif
#endif /* Use misc. */
diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile
index ca953804d0..26794e4fef 100644
--- a/sysdeps/unix/sysv/linux/Makefile
+++ b/sysdeps/unix/sysv/linux/Makefile
@@ -341,6 +341,10 @@ tests += tst-getdents64
ifeq ($(have-GLIBC_2.1.3)$(build-shared),yesyes)
tests += tst-readdir64-compat
endif
+
+# Avoid the warning for the weak_alias for _DIRENT_MATCHES_DIRENT64
+CFLAGS-getdirentries64.o = -Wno-deprecated-declarations
+CFLAGS-getdirentries64.os = -Wno-deprecated-declarations
endif # $(subdir) == dirent
ifeq ($(subdir),nis)
--
2.35.1
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