glibc/sysdeps/unix/sysv/linux/alpha/getdents.c

/* 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>
#undef _DIRENT_MATCHES_DIRENT64
#define _DIRENT_MATCHES_DIRENT64 0
#define DIRENT_SET_DP_INO(dp, value) \
  do { (dp)->d_ino = (value); (dp)->__pad = 0; } while (0)
#include <sysdeps/unix/sysv/linux/getdents.c>
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>`
			`#undef _DIRENT_MATCHES_DIRENT64`
			`#define _DIRENT_MATCHES_DIRENT64 0`
Only use for non-LFS getdents. 2000-08-19 16:37:40 +00:00			`#define DIRENT_SET_DP_INO(dp, value) \`
			`do { (dp)->d_ino = (value); (dp)->__pad = 0; } while (0)`
Linux/Alpha egtdents implementation. 2000-08-12 04:48:19 +00:00			`#include <sysdeps/unix/sysv/linux/getdents.c>`