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author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2018-02-28 09:25:58 -0300 |
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committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2018-04-06 17:49:02 -0300 |
commit | 942de61a89c5a01847d96831cb5e56630a7ba450 (patch) | |
tree | 1eacd59833b356072fee74f69d06e79eb9d2477a /sysdeps/unix/sysv/linux/readdir64_r.c | |
parent | 243f59e5aa97b0b5f1e6a78913cf7f1ba18bd4c3 (diff) | |
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Consolidate Linux readdir{64}{_r} implementation
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.
Diffstat (limited to 'sysdeps/unix/sysv/linux/readdir64_r.c')
-rw-r--r-- | sysdeps/unix/sysv/linux/readdir64_r.c | 48 |
1 files changed, 47 insertions, 1 deletions
diff --git a/sysdeps/unix/sysv/linux/readdir64_r.c b/sysdeps/unix/sysv/linux/readdir64_r.c index 3dfbf4fd2c..ae3033ca06 100644 --- a/sysdeps/unix/sysv/linux/readdir64_r.c +++ b/sysdeps/unix/sysv/linux/readdir64_r.c @@ -1,7 +1,53 @@ +/* Read a directory in reentrant mode. Linux LFS version. + Copyright (C) 1997-2018 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/>. */ + +/* When _DIRENT_MATCHES_DIRENT64 is defined we can alias 'readdir64' to + 'readdir'. However the function signatures are not equal due + different return types, so we need to suppress {__}readdir so weak + and strong alias do not throw conflicting types errors. */ +#define readdir_r __no_readdir_r_decl +#define __readdir_r __no___readdir_r_decl +#include <dirent.h> + #define __READDIR_R __readdir64_r -#define __GETDENTS __getdents64 +#define __GETDENTS __getdents64 #define DIRENT_TYPE struct dirent64 #include <sysdeps/posix/readdir_r.c> +#undef __readdir_r +#undef readdir_r + +#if _DIRENT_MATCHES_DIRENT64 +strong_alias (__readdir64_r, __readdir_r) +weak_alias (__readdir64_r, readdir_r) weak_alias (__readdir64_r, readdir64_r) +#else +/* The compat code expects the 'struct direct' with d_ino being a __ino_t + instead of __ino64_t. */ +# include <shlib-compat.h> +versioned_symbol (libc, __readdir64_r, readdir64_r, GLIBC_2_2); +# if SHLIB_COMPAT(libc, GLIBC_2_1, GLIBC_2_2) +# include <olddirent.h> +# define __READDIR_R attribute_compat_text_section __old_readdir64_r +# define __GETDENTS __old_getdents64 +# define DIRENT_TYPE struct __old_dirent64 +# include <sysdeps/posix/readdir_r.c> +compat_symbol (libc, __old_readdir64_r, readdir64_r, GLIBC_2_1); +# endif /* SHLIB_COMPAT(libc, GLIBC_2_1, GLIBC_2_2) */ +#endif /* _DIRENT_MATCHES_DIRENT64 */ |