glibc/sysdeps/unix/sysv/linux/getdents64.c

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Consolidate Linux getdents{64} implementation This patch consolidates Linux getdents{64} implementation on just the default sysdeps/unix/sysv/linux/getdents{64}{_r}.c ones. Although this symbol is used only internally, the non-LFS version still need to be build due the non-LFS getdirentries which requires its semantic. The non-LFS default implementation now uses the wordsize-32 as base which uses getdents64 syscall plus adjustment for overflow (it allows to use the same code for architectures that does not support non-LFS getdents syscall). It has two main differences to wordsize-32 one: - DIRENT_SET_DP_INO is added to handle alpha requirement to zero the padding. - alloca is removed by allocating a bounded temporary buffer (it increases stack usage by roughly 276 bytes). The default implementation handle the Linux requirements: * getdents is only built for _DIRENT_MATCHES_DIRENT64 being 0. * getdents64 is always built and aliased to getdents for ABIs that define _DIRENT_MATCHES_DIRENT64 to 1. * A compat symbol is added for getdents64 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/unix/sysv/linux/alpha/getdents.c: Add comments with alpha requirements. (_DIRENT_MATCHES_DIRENT64): Undef * sysdeps/unix/sysv/linux/alpha/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/arm/getdents64.c: Remove file. * sysdeps/unix/sysv/linux/generic/getdents.c: Likewise. * sysdeps/unix/sysv/linux/generic/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/getdents.c: Likewise. * sysdeps/unix/sysv/linux/getdents.c: Simplify implementation by use getdents64 syscalls as base. * sysdeps/unix/sysv/linux/getdents64.c: Likewise and add compatibility symbol if required. * sysdeps/unix/sysv/linux/hppa/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/i386/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/m68k/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/getdents.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/get_clockfreq.c (__get_clockfreq_via_proc_openprom): Use __getdents64. * sysdeps/unix/sysv/linux/mips/mips64/getdents64.c: New file.
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/* Get directory entries. Linux LFS version.
Copyright (C) 1997-2021 Free Software Foundation, Inc.
Consolidate Linux getdents{64} implementation This patch consolidates Linux getdents{64} implementation on just the default sysdeps/unix/sysv/linux/getdents{64}{_r}.c ones. Although this symbol is used only internally, the non-LFS version still need to be build due the non-LFS getdirentries which requires its semantic. The non-LFS default implementation now uses the wordsize-32 as base which uses getdents64 syscall plus adjustment for overflow (it allows to use the same code for architectures that does not support non-LFS getdents syscall). It has two main differences to wordsize-32 one: - DIRENT_SET_DP_INO is added to handle alpha requirement to zero the padding. - alloca is removed by allocating a bounded temporary buffer (it increases stack usage by roughly 276 bytes). The default implementation handle the Linux requirements: * getdents is only built for _DIRENT_MATCHES_DIRENT64 being 0. * getdents64 is always built and aliased to getdents for ABIs that define _DIRENT_MATCHES_DIRENT64 to 1. * A compat symbol is added for getdents64 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/unix/sysv/linux/alpha/getdents.c: Add comments with alpha requirements. (_DIRENT_MATCHES_DIRENT64): Undef * sysdeps/unix/sysv/linux/alpha/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/arm/getdents64.c: Remove file. * sysdeps/unix/sysv/linux/generic/getdents.c: Likewise. * sysdeps/unix/sysv/linux/generic/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/getdents.c: Likewise. * sysdeps/unix/sysv/linux/getdents.c: Simplify implementation by use getdents64 syscalls as base. * sysdeps/unix/sysv/linux/getdents64.c: Likewise and add compatibility symbol if required. * sysdeps/unix/sysv/linux/hppa/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/i386/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/m68k/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/getdents.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/get_clockfreq.c (__get_clockfreq_via_proc_openprom): Use __getdents64. * sysdeps/unix/sysv/linux/mips/mips64/getdents64.c: New file.
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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
Prefer https to http for gnu.org and fsf.org URLs Also, change sources.redhat.com to sourceware.org. This patch was automatically generated by running the following shell script, which uses GNU sed, and which avoids modifying files imported from upstream: sed -ri ' s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g ' \ $(find $(git ls-files) -prune -type f \ ! -name '*.po' \ ! -name 'ChangeLog*' \ ! -path COPYING ! -path COPYING.LIB \ ! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \ ! -path manual/texinfo.tex ! -path scripts/config.guess \ ! -path scripts/config.sub ! -path scripts/install-sh \ ! -path scripts/mkinstalldirs ! -path scripts/move-if-change \ ! -path INSTALL ! -path locale/programs/charmap-kw.h \ ! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \ ! '(' -name configure \ -execdir test -f configure.ac -o -f configure.in ';' ')' \ ! '(' -name preconfigure \ -execdir test -f preconfigure.ac ';' ')' \ -print) and then by running 'make dist-prepare' to regenerate files built from the altered files, and then executing the following to cleanup: chmod a+x sysdeps/unix/sysv/linux/riscv/configure # Omit irrelevant whitespace and comment-only changes, # perhaps from a slightly-different Autoconf version. git checkout -f \ sysdeps/csky/configure \ sysdeps/hppa/configure \ sysdeps/riscv/configure \ sysdeps/unix/sysv/linux/csky/configure # Omit changes that caused a pre-commit check to fail like this: # remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines git checkout -f \ sysdeps/powerpc/powerpc64/ppc-mcount.S \ sysdeps/unix/sysv/linux/s390/s390-64/syscall.S # Omit change that caused a pre-commit check to fail like this: # remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
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<https://www.gnu.org/licenses/>. */
Consolidate Linux getdents{64} implementation This patch consolidates Linux getdents{64} implementation on just the default sysdeps/unix/sysv/linux/getdents{64}{_r}.c ones. Although this symbol is used only internally, the non-LFS version still need to be build due the non-LFS getdirentries which requires its semantic. The non-LFS default implementation now uses the wordsize-32 as base which uses getdents64 syscall plus adjustment for overflow (it allows to use the same code for architectures that does not support non-LFS getdents syscall). It has two main differences to wordsize-32 one: - DIRENT_SET_DP_INO is added to handle alpha requirement to zero the padding. - alloca is removed by allocating a bounded temporary buffer (it increases stack usage by roughly 276 bytes). The default implementation handle the Linux requirements: * getdents is only built for _DIRENT_MATCHES_DIRENT64 being 0. * getdents64 is always built and aliased to getdents for ABIs that define _DIRENT_MATCHES_DIRENT64 to 1. * A compat symbol is added for getdents64 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/unix/sysv/linux/alpha/getdents.c: Add comments with alpha requirements. (_DIRENT_MATCHES_DIRENT64): Undef * sysdeps/unix/sysv/linux/alpha/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/arm/getdents64.c: Remove file. * sysdeps/unix/sysv/linux/generic/getdents.c: Likewise. * sysdeps/unix/sysv/linux/generic/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/getdents.c: Likewise. * sysdeps/unix/sysv/linux/getdents.c: Simplify implementation by use getdents64 syscalls as base. * sysdeps/unix/sysv/linux/getdents64.c: Likewise and add compatibility symbol if required. * sysdeps/unix/sysv/linux/hppa/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/i386/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/m68k/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/getdents.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/get_clockfreq.c (__get_clockfreq_via_proc_openprom): Use __getdents64. * sysdeps/unix/sysv/linux/mips/mips64/getdents64.c: New file.
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#include <string.h>
#include <dirent.h>
#include <errno.h>
#include <limits.h>
Consolidate Linux getdents{64} implementation This patch consolidates Linux getdents{64} implementation on just the default sysdeps/unix/sysv/linux/getdents{64}{_r}.c ones. Although this symbol is used only internally, the non-LFS version still need to be build due the non-LFS getdirentries which requires its semantic. The non-LFS default implementation now uses the wordsize-32 as base which uses getdents64 syscall plus adjustment for overflow (it allows to use the same code for architectures that does not support non-LFS getdents syscall). It has two main differences to wordsize-32 one: - DIRENT_SET_DP_INO is added to handle alpha requirement to zero the padding. - alloca is removed by allocating a bounded temporary buffer (it increases stack usage by roughly 276 bytes). The default implementation handle the Linux requirements: * getdents is only built for _DIRENT_MATCHES_DIRENT64 being 0. * getdents64 is always built and aliased to getdents for ABIs that define _DIRENT_MATCHES_DIRENT64 to 1. * A compat symbol is added for getdents64 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/unix/sysv/linux/alpha/getdents.c: Add comments with alpha requirements. (_DIRENT_MATCHES_DIRENT64): Undef * sysdeps/unix/sysv/linux/alpha/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/arm/getdents64.c: Remove file. * sysdeps/unix/sysv/linux/generic/getdents.c: Likewise. * sysdeps/unix/sysv/linux/generic/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/getdents.c: Likewise. * sysdeps/unix/sysv/linux/getdents.c: Simplify implementation by use getdents64 syscalls as base. * sysdeps/unix/sysv/linux/getdents64.c: Likewise and add compatibility symbol if required. * sysdeps/unix/sysv/linux/hppa/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/i386/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/m68k/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/getdents.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/get_clockfreq.c (__get_clockfreq_via_proc_openprom): Use __getdents64. * sysdeps/unix/sysv/linux/mips/mips64/getdents64.c: New file.
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/* The kernel struct linux_dirent64 matches the 'struct dirent64' type. */
Consolidate Linux getdents{64} implementation This patch consolidates Linux getdents{64} implementation on just the default sysdeps/unix/sysv/linux/getdents{64}{_r}.c ones. Although this symbol is used only internally, the non-LFS version still need to be build due the non-LFS getdirentries which requires its semantic. The non-LFS default implementation now uses the wordsize-32 as base which uses getdents64 syscall plus adjustment for overflow (it allows to use the same code for architectures that does not support non-LFS getdents syscall). It has two main differences to wordsize-32 one: - DIRENT_SET_DP_INO is added to handle alpha requirement to zero the padding. - alloca is removed by allocating a bounded temporary buffer (it increases stack usage by roughly 276 bytes). The default implementation handle the Linux requirements: * getdents is only built for _DIRENT_MATCHES_DIRENT64 being 0. * getdents64 is always built and aliased to getdents for ABIs that define _DIRENT_MATCHES_DIRENT64 to 1. * A compat symbol is added for getdents64 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/unix/sysv/linux/alpha/getdents.c: Add comments with alpha requirements. (_DIRENT_MATCHES_DIRENT64): Undef * sysdeps/unix/sysv/linux/alpha/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/arm/getdents64.c: Remove file. * sysdeps/unix/sysv/linux/generic/getdents.c: Likewise. * sysdeps/unix/sysv/linux/generic/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/getdents.c: Likewise. * sysdeps/unix/sysv/linux/getdents.c: Simplify implementation by use getdents64 syscalls as base. * sysdeps/unix/sysv/linux/getdents64.c: Likewise and add compatibility symbol if required. * sysdeps/unix/sysv/linux/hppa/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/i386/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/m68k/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/getdents.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/get_clockfreq.c (__get_clockfreq_via_proc_openprom): Use __getdents64. * sysdeps/unix/sysv/linux/mips/mips64/getdents64.c: New file.
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ssize_t
__getdents64 (int fd, void *buf, size_t nbytes)
Consolidate Linux getdents{64} implementation This patch consolidates Linux getdents{64} implementation on just the default sysdeps/unix/sysv/linux/getdents{64}{_r}.c ones. Although this symbol is used only internally, the non-LFS version still need to be build due the non-LFS getdirentries which requires its semantic. The non-LFS default implementation now uses the wordsize-32 as base which uses getdents64 syscall plus adjustment for overflow (it allows to use the same code for architectures that does not support non-LFS getdents syscall). It has two main differences to wordsize-32 one: - DIRENT_SET_DP_INO is added to handle alpha requirement to zero the padding. - alloca is removed by allocating a bounded temporary buffer (it increases stack usage by roughly 276 bytes). The default implementation handle the Linux requirements: * getdents is only built for _DIRENT_MATCHES_DIRENT64 being 0. * getdents64 is always built and aliased to getdents for ABIs that define _DIRENT_MATCHES_DIRENT64 to 1. * A compat symbol is added for getdents64 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/unix/sysv/linux/alpha/getdents.c: Add comments with alpha requirements. (_DIRENT_MATCHES_DIRENT64): Undef * sysdeps/unix/sysv/linux/alpha/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/arm/getdents64.c: Remove file. * sysdeps/unix/sysv/linux/generic/getdents.c: Likewise. * sysdeps/unix/sysv/linux/generic/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/getdents.c: Likewise. * sysdeps/unix/sysv/linux/getdents.c: Simplify implementation by use getdents64 syscalls as base. * sysdeps/unix/sysv/linux/getdents64.c: Likewise and add compatibility symbol if required. * sysdeps/unix/sysv/linux/hppa/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/i386/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/m68k/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/getdents.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/get_clockfreq.c (__get_clockfreq_via_proc_openprom): Use __getdents64. * sysdeps/unix/sysv/linux/mips/mips64/getdents64.c: New file.
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{
/* The system call takes an unsigned int argument, and some length
checks in the kernel use an int type. */
if (nbytes > INT_MAX)
nbytes = INT_MAX;
Consolidate Linux getdents{64} implementation This patch consolidates Linux getdents{64} implementation on just the default sysdeps/unix/sysv/linux/getdents{64}{_r}.c ones. Although this symbol is used only internally, the non-LFS version still need to be build due the non-LFS getdirentries which requires its semantic. The non-LFS default implementation now uses the wordsize-32 as base which uses getdents64 syscall plus adjustment for overflow (it allows to use the same code for architectures that does not support non-LFS getdents syscall). It has two main differences to wordsize-32 one: - DIRENT_SET_DP_INO is added to handle alpha requirement to zero the padding. - alloca is removed by allocating a bounded temporary buffer (it increases stack usage by roughly 276 bytes). The default implementation handle the Linux requirements: * getdents is only built for _DIRENT_MATCHES_DIRENT64 being 0. * getdents64 is always built and aliased to getdents for ABIs that define _DIRENT_MATCHES_DIRENT64 to 1. * A compat symbol is added for getdents64 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/unix/sysv/linux/alpha/getdents.c: Add comments with alpha requirements. (_DIRENT_MATCHES_DIRENT64): Undef * sysdeps/unix/sysv/linux/alpha/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/arm/getdents64.c: Remove file. * sysdeps/unix/sysv/linux/generic/getdents.c: Likewise. * sysdeps/unix/sysv/linux/generic/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/getdents.c: Likewise. * sysdeps/unix/sysv/linux/getdents.c: Simplify implementation by use getdents64 syscalls as base. * sysdeps/unix/sysv/linux/getdents64.c: Likewise and add compatibility symbol if required. * sysdeps/unix/sysv/linux/hppa/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/i386/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/m68k/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/getdents.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/get_clockfreq.c (__get_clockfreq_via_proc_openprom): Use __getdents64. * sysdeps/unix/sysv/linux/mips/mips64/getdents64.c: New file.
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return INLINE_SYSCALL_CALL (getdents64, fd, buf, nbytes);
}
libc_hidden_def (__getdents64)
weak_alias (__getdents64, getdents64)
Consolidate Linux getdents{64} implementation This patch consolidates Linux getdents{64} implementation on just the default sysdeps/unix/sysv/linux/getdents{64}{_r}.c ones. Although this symbol is used only internally, the non-LFS version still need to be build due the non-LFS getdirentries which requires its semantic. The non-LFS default implementation now uses the wordsize-32 as base which uses getdents64 syscall plus adjustment for overflow (it allows to use the same code for architectures that does not support non-LFS getdents syscall). It has two main differences to wordsize-32 one: - DIRENT_SET_DP_INO is added to handle alpha requirement to zero the padding. - alloca is removed by allocating a bounded temporary buffer (it increases stack usage by roughly 276 bytes). The default implementation handle the Linux requirements: * getdents is only built for _DIRENT_MATCHES_DIRENT64 being 0. * getdents64 is always built and aliased to getdents for ABIs that define _DIRENT_MATCHES_DIRENT64 to 1. * A compat symbol is added for getdents64 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/unix/sysv/linux/alpha/getdents.c: Add comments with alpha requirements. (_DIRENT_MATCHES_DIRENT64): Undef * sysdeps/unix/sysv/linux/alpha/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/arm/getdents64.c: Remove file. * sysdeps/unix/sysv/linux/generic/getdents.c: Likewise. * sysdeps/unix/sysv/linux/generic/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/getdents.c: Likewise. * sysdeps/unix/sysv/linux/getdents.c: Simplify implementation by use getdents64 syscalls as base. * sysdeps/unix/sysv/linux/getdents64.c: Likewise and add compatibility symbol if required. * sysdeps/unix/sysv/linux/hppa/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/i386/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/m68k/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/getdents.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/get_clockfreq.c (__get_clockfreq_via_proc_openprom): Use __getdents64. * sysdeps/unix/sysv/linux/mips/mips64/getdents64.c: New file.
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#if _DIRENT_MATCHES_DIRENT64
strong_alias (__getdents64, __getdents)
#else
# include <shlib-compat.h>
# if SHLIB_COMPAT(libc, GLIBC_2_1, GLIBC_2_2)
# include <olddirent.h>
# include <unistd.h>
Consolidate Linux getdents{64} implementation This patch consolidates Linux getdents{64} implementation on just the default sysdeps/unix/sysv/linux/getdents{64}{_r}.c ones. Although this symbol is used only internally, the non-LFS version still need to be build due the non-LFS getdirentries which requires its semantic. The non-LFS default implementation now uses the wordsize-32 as base which uses getdents64 syscall plus adjustment for overflow (it allows to use the same code for architectures that does not support non-LFS getdents syscall). It has two main differences to wordsize-32 one: - DIRENT_SET_DP_INO is added to handle alpha requirement to zero the padding. - alloca is removed by allocating a bounded temporary buffer (it increases stack usage by roughly 276 bytes). The default implementation handle the Linux requirements: * getdents is only built for _DIRENT_MATCHES_DIRENT64 being 0. * getdents64 is always built and aliased to getdents for ABIs that define _DIRENT_MATCHES_DIRENT64 to 1. * A compat symbol is added for getdents64 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/unix/sysv/linux/alpha/getdents.c: Add comments with alpha requirements. (_DIRENT_MATCHES_DIRENT64): Undef * sysdeps/unix/sysv/linux/alpha/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/arm/getdents64.c: Remove file. * sysdeps/unix/sysv/linux/generic/getdents.c: Likewise. * sysdeps/unix/sysv/linux/generic/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/getdents.c: Likewise. * sysdeps/unix/sysv/linux/getdents.c: Simplify implementation by use getdents64 syscalls as base. * sysdeps/unix/sysv/linux/getdents64.c: Likewise and add compatibility symbol if required. * sysdeps/unix/sysv/linux/hppa/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/i386/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/m68k/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/getdents.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/get_clockfreq.c (__get_clockfreq_via_proc_openprom): Use __getdents64. * sysdeps/unix/sysv/linux/mips/mips64/getdents64.c: New file.
2018-02-28 18:37:17 +00:00
static ssize_t
handle_overflow (int fd, __off64_t offset, ssize_t count)
Consolidate Linux getdents{64} implementation This patch consolidates Linux getdents{64} implementation on just the default sysdeps/unix/sysv/linux/getdents{64}{_r}.c ones. Although this symbol is used only internally, the non-LFS version still need to be build due the non-LFS getdirentries which requires its semantic. The non-LFS default implementation now uses the wordsize-32 as base which uses getdents64 syscall plus adjustment for overflow (it allows to use the same code for architectures that does not support non-LFS getdents syscall). It has two main differences to wordsize-32 one: - DIRENT_SET_DP_INO is added to handle alpha requirement to zero the padding. - alloca is removed by allocating a bounded temporary buffer (it increases stack usage by roughly 276 bytes). The default implementation handle the Linux requirements: * getdents is only built for _DIRENT_MATCHES_DIRENT64 being 0. * getdents64 is always built and aliased to getdents for ABIs that define _DIRENT_MATCHES_DIRENT64 to 1. * A compat symbol is added for getdents64 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/unix/sysv/linux/alpha/getdents.c: Add comments with alpha requirements. (_DIRENT_MATCHES_DIRENT64): Undef * sysdeps/unix/sysv/linux/alpha/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/arm/getdents64.c: Remove file. * sysdeps/unix/sysv/linux/generic/getdents.c: Likewise. * sysdeps/unix/sysv/linux/generic/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/getdents.c: Likewise. * sysdeps/unix/sysv/linux/getdents.c: Simplify implementation by use getdents64 syscalls as base. * sysdeps/unix/sysv/linux/getdents64.c: Likewise and add compatibility symbol if required. * sysdeps/unix/sysv/linux/hppa/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/i386/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/m68k/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/getdents.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/get_clockfreq.c (__get_clockfreq_via_proc_openprom): Use __getdents64. * sysdeps/unix/sysv/linux/mips/mips64/getdents64.c: New file.
2018-02-28 18:37:17 +00:00
{
/* If this is the first entry in the buffer, we can report the
error. */
if (offset == 0)
{
__set_errno (EOVERFLOW);
return -1;
}
/* Otherwise, seek to the overflowing entry, so that the next call
will report the error, and return the data read so far. */
if (__lseek64 (fd, offset, SEEK_SET) != 0)
return -1;
return count;
}
Consolidate Linux getdents{64} implementation This patch consolidates Linux getdents{64} implementation on just the default sysdeps/unix/sysv/linux/getdents{64}{_r}.c ones. Although this symbol is used only internally, the non-LFS version still need to be build due the non-LFS getdirentries which requires its semantic. The non-LFS default implementation now uses the wordsize-32 as base which uses getdents64 syscall plus adjustment for overflow (it allows to use the same code for architectures that does not support non-LFS getdents syscall). It has two main differences to wordsize-32 one: - DIRENT_SET_DP_INO is added to handle alpha requirement to zero the padding. - alloca is removed by allocating a bounded temporary buffer (it increases stack usage by roughly 276 bytes). The default implementation handle the Linux requirements: * getdents is only built for _DIRENT_MATCHES_DIRENT64 being 0. * getdents64 is always built and aliased to getdents for ABIs that define _DIRENT_MATCHES_DIRENT64 to 1. * A compat symbol is added for getdents64 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/unix/sysv/linux/alpha/getdents.c: Add comments with alpha requirements. (_DIRENT_MATCHES_DIRENT64): Undef * sysdeps/unix/sysv/linux/alpha/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/arm/getdents64.c: Remove file. * sysdeps/unix/sysv/linux/generic/getdents.c: Likewise. * sysdeps/unix/sysv/linux/generic/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/getdents.c: Likewise. * sysdeps/unix/sysv/linux/getdents.c: Simplify implementation by use getdents64 syscalls as base. * sysdeps/unix/sysv/linux/getdents64.c: Likewise and add compatibility symbol if required. * sysdeps/unix/sysv/linux/hppa/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/i386/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/m68k/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/getdents.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/get_clockfreq.c (__get_clockfreq_via_proc_openprom): Use __getdents64. * sysdeps/unix/sysv/linux/mips/mips64/getdents64.c: New file.
2018-02-28 18:37:17 +00:00
ssize_t
__old_getdents64 (int fd, char *buf, size_t nbytes)
{
/* We do not move the individual directory entries. This is only
possible if the target type (struct __old_dirent64) is smaller
than the source type. */
_Static_assert (offsetof (struct __old_dirent64, d_name)
<= offsetof (struct dirent64, d_name),
"__old_dirent64 is larger than dirent64");
_Static_assert (__alignof__ (struct __old_dirent64)
<= __alignof__ (struct dirent64),
"alignment of __old_dirent64 is larger than dirent64");
Consolidate Linux getdents{64} implementation This patch consolidates Linux getdents{64} implementation on just the default sysdeps/unix/sysv/linux/getdents{64}{_r}.c ones. Although this symbol is used only internally, the non-LFS version still need to be build due the non-LFS getdirentries which requires its semantic. The non-LFS default implementation now uses the wordsize-32 as base which uses getdents64 syscall plus adjustment for overflow (it allows to use the same code for architectures that does not support non-LFS getdents syscall). It has two main differences to wordsize-32 one: - DIRENT_SET_DP_INO is added to handle alpha requirement to zero the padding. - alloca is removed by allocating a bounded temporary buffer (it increases stack usage by roughly 276 bytes). The default implementation handle the Linux requirements: * getdents is only built for _DIRENT_MATCHES_DIRENT64 being 0. * getdents64 is always built and aliased to getdents for ABIs that define _DIRENT_MATCHES_DIRENT64 to 1. * A compat symbol is added for getdents64 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/unix/sysv/linux/alpha/getdents.c: Add comments with alpha requirements. (_DIRENT_MATCHES_DIRENT64): Undef * sysdeps/unix/sysv/linux/alpha/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/arm/getdents64.c: Remove file. * sysdeps/unix/sysv/linux/generic/getdents.c: Likewise. * sysdeps/unix/sysv/linux/generic/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/getdents.c: Likewise. * sysdeps/unix/sysv/linux/getdents.c: Simplify implementation by use getdents64 syscalls as base. * sysdeps/unix/sysv/linux/getdents64.c: Likewise and add compatibility symbol if required. * sysdeps/unix/sysv/linux/hppa/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/i386/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/m68k/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/getdents.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/get_clockfreq.c (__get_clockfreq_via_proc_openprom): Use __getdents64. * sysdeps/unix/sysv/linux/mips/mips64/getdents64.c: New file.
2018-02-28 18:37:17 +00:00
ssize_t retval = INLINE_SYSCALL_CALL (getdents64, fd, buf, nbytes);
if (retval > 0)
Consolidate Linux getdents{64} implementation This patch consolidates Linux getdents{64} implementation on just the default sysdeps/unix/sysv/linux/getdents{64}{_r}.c ones. Although this symbol is used only internally, the non-LFS version still need to be build due the non-LFS getdirentries which requires its semantic. The non-LFS default implementation now uses the wordsize-32 as base which uses getdents64 syscall plus adjustment for overflow (it allows to use the same code for architectures that does not support non-LFS getdents syscall). It has two main differences to wordsize-32 one: - DIRENT_SET_DP_INO is added to handle alpha requirement to zero the padding. - alloca is removed by allocating a bounded temporary buffer (it increases stack usage by roughly 276 bytes). The default implementation handle the Linux requirements: * getdents is only built for _DIRENT_MATCHES_DIRENT64 being 0. * getdents64 is always built and aliased to getdents for ABIs that define _DIRENT_MATCHES_DIRENT64 to 1. * A compat symbol is added for getdents64 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/unix/sysv/linux/alpha/getdents.c: Add comments with alpha requirements. (_DIRENT_MATCHES_DIRENT64): Undef * sysdeps/unix/sysv/linux/alpha/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/arm/getdents64.c: Remove file. * sysdeps/unix/sysv/linux/generic/getdents.c: Likewise. * sysdeps/unix/sysv/linux/generic/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/getdents.c: Likewise. * sysdeps/unix/sysv/linux/getdents.c: Simplify implementation by use getdents64 syscalls as base. * sysdeps/unix/sysv/linux/getdents64.c: Likewise and add compatibility symbol if required. * sysdeps/unix/sysv/linux/hppa/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/i386/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/m68k/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/getdents.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/get_clockfreq.c (__get_clockfreq_via_proc_openprom): Use __getdents64. * sysdeps/unix/sysv/linux/mips/mips64/getdents64.c: New file.
2018-02-28 18:37:17 +00:00
{
/* This is the marker for the first entry. Offset 0 is reserved
for the first entry (see rewinddir). Here, we use it as a
marker for the first entry in the buffer. We never actually
seek to offset 0 because handle_overflow reports the error
directly, so it does not matter that the offset is incorrect
if entries have been read from the descriptor before (so that
the descriptor is not actually at offset 0). */
__off64_t previous_offset = 0;
char *p = buf;
char *end = buf + retval;
while (p < end)
Consolidate Linux getdents{64} implementation This patch consolidates Linux getdents{64} implementation on just the default sysdeps/unix/sysv/linux/getdents{64}{_r}.c ones. Although this symbol is used only internally, the non-LFS version still need to be build due the non-LFS getdirentries which requires its semantic. The non-LFS default implementation now uses the wordsize-32 as base which uses getdents64 syscall plus adjustment for overflow (it allows to use the same code for architectures that does not support non-LFS getdents syscall). It has two main differences to wordsize-32 one: - DIRENT_SET_DP_INO is added to handle alpha requirement to zero the padding. - alloca is removed by allocating a bounded temporary buffer (it increases stack usage by roughly 276 bytes). The default implementation handle the Linux requirements: * getdents is only built for _DIRENT_MATCHES_DIRENT64 being 0. * getdents64 is always built and aliased to getdents for ABIs that define _DIRENT_MATCHES_DIRENT64 to 1. * A compat symbol is added for getdents64 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/unix/sysv/linux/alpha/getdents.c: Add comments with alpha requirements. (_DIRENT_MATCHES_DIRENT64): Undef * sysdeps/unix/sysv/linux/alpha/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/arm/getdents64.c: Remove file. * sysdeps/unix/sysv/linux/generic/getdents.c: Likewise. * sysdeps/unix/sysv/linux/generic/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/getdents.c: Likewise. * sysdeps/unix/sysv/linux/getdents.c: Simplify implementation by use getdents64 syscalls as base. * sysdeps/unix/sysv/linux/getdents64.c: Likewise and add compatibility symbol if required. * sysdeps/unix/sysv/linux/hppa/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/i386/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/m68k/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/getdents.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/get_clockfreq.c (__get_clockfreq_via_proc_openprom): Use __getdents64. * sysdeps/unix/sysv/linux/mips/mips64/getdents64.c: New file.
2018-02-28 18:37:17 +00:00
{
struct dirent64 *source = (struct dirent64 *) p;
/* Copy out the fixed-size data. */
__ino_t ino = source->d_ino;
__off64_t offset = source->d_off;
unsigned int reclen = source->d_reclen;
unsigned char type = source->d_type;
/* Check for ino_t overflow. */
if (__glibc_unlikely (ino != source->d_ino))
return handle_overflow (fd, previous_offset, p - buf);
/* Convert to the target layout. Use a separate struct and
memcpy to side-step aliasing issues. */
struct __old_dirent64 result;
result.d_ino = ino;
result.d_off = offset;
result.d_reclen = reclen;
result.d_type = type;
/* Write the fixed-sized part of the result to the
buffer. */
size_t result_name_offset = offsetof (struct __old_dirent64, d_name);
memcpy (p, &result, result_name_offset);
/* Adjust the position of the name if necessary. Copy
everything until the end of the record, including the
terminating NUL byte. */
if (result_name_offset != offsetof (struct dirent64, d_name))
memmove (p + result_name_offset, source->d_name,
reclen - offsetof (struct dirent64, d_name));
Consolidate Linux getdents{64} implementation This patch consolidates Linux getdents{64} implementation on just the default sysdeps/unix/sysv/linux/getdents{64}{_r}.c ones. Although this symbol is used only internally, the non-LFS version still need to be build due the non-LFS getdirentries which requires its semantic. The non-LFS default implementation now uses the wordsize-32 as base which uses getdents64 syscall plus adjustment for overflow (it allows to use the same code for architectures that does not support non-LFS getdents syscall). It has two main differences to wordsize-32 one: - DIRENT_SET_DP_INO is added to handle alpha requirement to zero the padding. - alloca is removed by allocating a bounded temporary buffer (it increases stack usage by roughly 276 bytes). The default implementation handle the Linux requirements: * getdents is only built for _DIRENT_MATCHES_DIRENT64 being 0. * getdents64 is always built and aliased to getdents for ABIs that define _DIRENT_MATCHES_DIRENT64 to 1. * A compat symbol is added for getdents64 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/unix/sysv/linux/alpha/getdents.c: Add comments with alpha requirements. (_DIRENT_MATCHES_DIRENT64): Undef * sysdeps/unix/sysv/linux/alpha/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/arm/getdents64.c: Remove file. * sysdeps/unix/sysv/linux/generic/getdents.c: Likewise. * sysdeps/unix/sysv/linux/generic/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/getdents.c: Likewise. * sysdeps/unix/sysv/linux/getdents.c: Simplify implementation by use getdents64 syscalls as base. * sysdeps/unix/sysv/linux/getdents64.c: Likewise and add compatibility symbol if required. * sysdeps/unix/sysv/linux/hppa/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/i386/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/m68k/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/getdents.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/get_clockfreq.c (__get_clockfreq_via_proc_openprom): Use __getdents64. * sysdeps/unix/sysv/linux/mips/mips64/getdents64.c: New file.
2018-02-28 18:37:17 +00:00
p += reclen;
previous_offset = offset;
Consolidate Linux getdents{64} implementation This patch consolidates Linux getdents{64} implementation on just the default sysdeps/unix/sysv/linux/getdents{64}{_r}.c ones. Although this symbol is used only internally, the non-LFS version still need to be build due the non-LFS getdirentries which requires its semantic. The non-LFS default implementation now uses the wordsize-32 as base which uses getdents64 syscall plus adjustment for overflow (it allows to use the same code for architectures that does not support non-LFS getdents syscall). It has two main differences to wordsize-32 one: - DIRENT_SET_DP_INO is added to handle alpha requirement to zero the padding. - alloca is removed by allocating a bounded temporary buffer (it increases stack usage by roughly 276 bytes). The default implementation handle the Linux requirements: * getdents is only built for _DIRENT_MATCHES_DIRENT64 being 0. * getdents64 is always built and aliased to getdents for ABIs that define _DIRENT_MATCHES_DIRENT64 to 1. * A compat symbol is added for getdents64 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/unix/sysv/linux/alpha/getdents.c: Add comments with alpha requirements. (_DIRENT_MATCHES_DIRENT64): Undef * sysdeps/unix/sysv/linux/alpha/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/arm/getdents64.c: Remove file. * sysdeps/unix/sysv/linux/generic/getdents.c: Likewise. * sysdeps/unix/sysv/linux/generic/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/getdents.c: Likewise. * sysdeps/unix/sysv/linux/getdents.c: Simplify implementation by use getdents64 syscalls as base. * sysdeps/unix/sysv/linux/getdents64.c: Likewise and add compatibility symbol if required. * sysdeps/unix/sysv/linux/hppa/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/i386/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/m68k/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/getdents.c: Likewise. * sysdeps/unix/sysv/linux/wordsize-64/getdents64.c: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/get_clockfreq.c (__get_clockfreq_via_proc_openprom): Use __getdents64. * sysdeps/unix/sysv/linux/mips/mips64/getdents64.c: New file.
2018-02-28 18:37:17 +00:00
}
}
return retval;
}
# endif /* SHLIB_COMPAT(libc, GLIBC_2_1, GLIBC_2_2) */
#endif /* _DIRENT_MATCHES_DIRENT64 */