mirror of git://sourceware.org/git/glibc.git
298d0e3129
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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| .. | ||
| bits | ||
| coldfire | ||
| m680x0 | ||
| sys | ||
| Implies | ||
| Makefile | ||
| Versions | ||
| ____longjmp_chk.c | ||
| alphasort64.c | ||
| brk.c | ||
| c++-types.data | ||
| clone.S | ||
| configure | ||
| configure.ac | ||
| dl-librecon.h | ||
| dl-static.c | ||
| fxstat.c | ||
| fxstatat.c | ||
| getmsg.c | ||
| getpagesize.c | ||
| getsysstats.c | ||
| init-first.c | ||
| kernel-features.h | ||
| kernel_sigaction.h | ||
| ldconfig.h | ||
| ldsodefs.h | ||
| libc-m68k-vdso.c | ||
| lockf64.c | ||
| lxstat.c | ||
| m68k-helpers.S | ||
| m68k-vdso.c | ||
| m68k-vdso.h | ||
| mmap_internal.h | ||
| mremap.S | ||
| pt-vfork.c | ||
| putmsg.c | ||
| register-dump.h | ||
| scandir64.c | ||
| sigcontextinfo.h | ||
| syscall.S | ||
| syscalls.list | ||
| sysdep.S | ||
| sysdep.h | ||
| versionsort64.c | ||
| vfork.S | ||
| xstat.c | ||