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glibc/sysdeps/unix/sysv/linux/alpha/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.
2018-02-28 18:37:17 +00:00
/* Although Alpha defines _DIRENT_MATCHES_DIRENT64, 'struct dirent' and
'struct dirent64' have slight different internal layout with d_ino
being a __ino_t on non-LFS version with an extra __pad field which should
be zeroed. */
#include <dirent.h>
/* It suppresses the __getdents64 to __getdents alias. */
#undef _DIRENT_MATCHES_DIRENT64
#define _DIRENT_MATCHES_DIRENT64 0
Update include paths following the move of alpha to ports * sysdeps/unix/sysv/linux/alpha/getdents64.c: Adjust include path. * sysdeps/unix/sysv/linux/alpha/nptl/fork.c: Likewise. * sysdeps/unix/sysv/linux/alpha/nptl/sem_post.c: Likewise. * sysdeps/unix/sysv/linux/alpha/nptl/timer_create.c: Likewise. * sysdeps/unix/sysv/linux/alpha/nptl/timer_delete.c: Likewise. * sysdeps/unix/sysv/linux/alpha/nptl/timer_getoverr.c: Likewise. * sysdeps/unix/sysv/linux/alpha/nptl/timer_gettime.c: Likewise. * sysdeps/unix/sysv/linux/alpha/nptl/timer_settime.c: Likewise. * sysdeps/unix/sysv/linux/alpha/sysconf.c: Likewise.
2009-07-13 21:59:25 +00:00
#include <sysdeps/unix/sysv/linux/getdents64.c>
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