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942de61a89
This patch consolidates Linux readdir{64}{_r} implementation on just
the default sysdeps/unix/sysv/linux/readdir{64}{_r}.c ones. The
default implementation handle the Linux requirements:
* readdir{_r} is only built for _DIRENT_MATCHES_DIRENT64 being 0.
* readdir64{_r} is always built and aliased to readdir{_r} for
ABI that define _DIRENT_MATCHES_DIRENT64.
* A compat symbol is added for readdir64{_r} for ABI that used to
export the old non-LFS version.
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/posix/readdir.c (__READDIR, __GETDENTS, DIRENTY_TYPE,
__READDIR_ALIAS): Undefine after usage.
* sysdeps/posix/readdir_r.c (__READDIR_R, __GETDENTS, DIRENT_TYPE,
__READDIR_R_ALIAS): Likewise.
* sysdeps/unix/sysv/linux/arm/readdir64.c: Remove file.
* sysdeps/unix/sysv/linux/arm/readdir64_r.c: Likewise.
* sysdeps/unix/sysv/linux/m68k/readdir64.c: Likewise.
* sysdeps/unix/sysv/linux/m68k/readdir64_r.c: Likewise.
* sysdeps/unix/sysv/linux/powerpc/readdir64.c: Likewise.
* sysdeps/unix/sysv/linux/powerpc/readdir64_r.c: Likewise.
* sysdeps/unix/sysv/linux/i386/readdir64.c: Likewise.
* sysdeps/unix/sysv/linux/i386/readdir64_r.c: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/readdir64.c: Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/readdir64_r.c: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc32/readdir64.c: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc32/readdir64_r.c: Likewise.
* sysdeps/unix/sysv/linux/wordsize-64/readdir.c: Likewise.
* sysdeps/unix/sysv/linux/wordsize-64/readdir64.c: Likewise.
* sysdeps/unix/sysv/linux/wordsize-64/readdir64_r.c: Likewise.
* sysdeps/unix/sysv/linux/wordsize-64/readdir_r.c: Likewise.
* sysdeps/unix/sysv/linux/readdir.c: New file.
* sysdeps/unix/sysv/linux/readdir_r.c: Likewise.
* sysdeps/unix/sysv/linux/readdir64.c: Add compat symbol if required.
* sysdeps/unix/sysv/linux/readdir64_r.c: Likewise.
54 lines
2.1 KiB
C
54 lines
2.1 KiB
C
/* Read a directory in reentrant mode. Linux LFS version.
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Copyright (C) 1997-2018 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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/* When _DIRENT_MATCHES_DIRENT64 is defined we can alias 'readdir64' to
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'readdir'. However the function signatures are not equal due
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different return types, so we need to suppress {__}readdir so weak
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and strong alias do not throw conflicting types errors. */
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#define readdir_r __no_readdir_r_decl
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#define __readdir_r __no___readdir_r_decl
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#include <dirent.h>
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#define __READDIR_R __readdir64_r
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#define __GETDENTS __getdents64
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#define DIRENT_TYPE struct dirent64
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#include <sysdeps/posix/readdir_r.c>
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#undef __readdir_r
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#undef readdir_r
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#if _DIRENT_MATCHES_DIRENT64
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strong_alias (__readdir64_r, __readdir_r)
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weak_alias (__readdir64_r, readdir_r)
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weak_alias (__readdir64_r, readdir64_r)
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#else
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/* The compat code expects the 'struct direct' with d_ino being a __ino_t
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instead of __ino64_t. */
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# include <shlib-compat.h>
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versioned_symbol (libc, __readdir64_r, readdir64_r, GLIBC_2_2);
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# if SHLIB_COMPAT(libc, GLIBC_2_1, GLIBC_2_2)
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# include <olddirent.h>
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# define __READDIR_R attribute_compat_text_section __old_readdir64_r
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# define __GETDENTS __old_getdents64
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# define DIRENT_TYPE struct __old_dirent64
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# include <sysdeps/posix/readdir_r.c>
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compat_symbol (libc, __old_readdir64_r, readdir64_r, GLIBC_2_1);
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# endif /* SHLIB_COMPAT(libc, GLIBC_2_1, GLIBC_2_2) */
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#endif /* _DIRENT_MATCHES_DIRENT64 */
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