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Update.
* include/dirent.h: Remove __getdirentries declaration, add __getdents and __getdents64. * sysdeps/unix/readdir.c: Use __getdents, not __getdirentries. * sysdeps/unix/readdir_r.c: Likewise. * sysdeps/unix/sysv/linux/readdir64.c: Likewise. * sysdeps/unix/sysv/linux/readdir64_r.c: Likewise. * sysdeps/unix/sysv/linux/getdents.c: Define __getdents, not __getdirentries. Remove fourth argument. * sysdeps/unix/sysv/linux/getdirentries.c: New file. * sysdeps/unix/sysv/linux/getdirentries64.c: New file. * sysdeps/unix/sysv/linux/Makefile [subdir=dirent] (sysdep_routines): Add getdirentries and getdirentries64. * sysdeps/unix/sysv/linux/Dist: Add getdirentries and getdirentries64.
This commit is contained in:
Ulrich Drepper
parent
b6a7609d56
commit
980e58323a
14
ChangeLog
14
ChangeLog
@ -1,5 +1,19 @@
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1999-04-27 Ulrich Drepper <drepper@cygnus.com>
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* include/dirent.h: Remove __getdirentries declaration, add __getdents
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and __getdents64.
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* sysdeps/unix/readdir.c: Use __getdents, not __getdirentries.
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* sysdeps/unix/readdir_r.c: Likewise.
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* sysdeps/unix/sysv/linux/readdir64.c: Likewise.
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* sysdeps/unix/sysv/linux/readdir64_r.c: Likewise.
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* sysdeps/unix/sysv/linux/getdents.c: Define __getdents, not
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__getdirentries. Remove fourth argument.
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* sysdeps/unix/sysv/linux/getdirentries.c: New file.
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* sysdeps/unix/sysv/linux/getdirentries64.c: New file.
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* sysdeps/unix/sysv/linux/Makefile [subdir=dirent] (sysdep_routines):
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Add getdirentries and getdirentries64.
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* sysdeps/unix/sysv/linux/Dist: Add getdirentries and getdirentries64.
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* posix/fnmatch.c (internal_fnmatch): Correctly reset string
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pointer in case of an invalid [[: expression.
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@ -8,6 +8,8 @@ extern struct dirent *__readdir __P ((DIR *__dirp));
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extern struct dirent64 *__readdir64 __P ((DIR *__dirp));
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extern int __readdir_r __P ((DIR *__dirp, struct dirent *__entry,
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struct dirent **__result));
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extern __ssize_t __getdirentries __P ((int __fd, char *__buf,
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size_t __nbytes, __off_t *__basep));
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extern __ssize_t __getdents __P ((int __fd, char *__buf, size_t __nbytes))
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internal_function;
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extern __ssize_t __getdents64 __P ((int __fd, char *__buf, size_t __nbytes))
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internal_function;
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#endif
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@ -1,4 +1,4 @@
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/* Copyright (C) 1991, 92, 93, 94, 95, 96, 97 Free Software Foundation, Inc.
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/* Copyright (C) 1991,92,93,94,95,96,97,99 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@ -45,7 +45,6 @@ __readdir (DIR *dirp)
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/* We've emptied out our buffer. Refill it. */
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size_t maxread;
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off_t base;
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ssize_t bytes;
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#ifndef _DIRENT_HAVE_D_RECLEN
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@ -55,8 +54,7 @@ __readdir (DIR *dirp)
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maxread = dirp->allocation;
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#endif
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base = dirp->filepos;
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bytes = __getdirentries (dirp->fd, dirp->data, maxread, &base);
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bytes = __getdents (dirp->fd, dirp->data, maxread);
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if (bytes <= 0)
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{
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dp = NULL;
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@ -1,4 +1,4 @@
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/* Copyright (C) 1991,92,93,94,95,96,97,98 Free Software Foundation, Inc.
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/* Copyright (C) 1991,92,93,94,95,96,97,98,99 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@ -44,7 +44,6 @@ __readdir_r (DIR *dirp, struct dirent *entry, struct dirent **result)
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/* We've emptied out our buffer. Refill it. */
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size_t maxread;
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off_t base;
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ssize_t bytes;
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#ifndef _DIRENT_HAVE_D_RECLEN
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@ -54,8 +53,7 @@ __readdir_r (DIR *dirp, struct dirent *entry, struct dirent **result)
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maxread = dirp->allocation;
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#endif
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base = dirp->filepos;
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bytes = __getdirentries (dirp->fd, dirp->data, maxread, &base);
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bytes = __getdents (dirp->fd, dirp->data, maxread);
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if (bytes <= 0)
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{
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dp = NULL;
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@ -1,6 +1,8 @@
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bits/pthreadtypes.h
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cmsg_nxthdr.c
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errlist.h
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getdirentries.c
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getdirentries64.c
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init-first.h
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kernel_sigaction.h
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kernel_stat.h
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@ -97,7 +97,7 @@ endif
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inhibit-glue = yes
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ifeq ($(subdir),dirent)
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sysdep_routines += getdents64
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sysdep_routines += getdents64 getdirentries getdirentries64
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endif
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ifeq ($(subdir),nis)
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@ -1,4 +1,4 @@
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/* Copyright (C) 1993, 1995, 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
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/* Copyright (C) 1993, 95, 96, 97, 98, 99 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@ -51,22 +51,23 @@ struct kernel_dirent
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};
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#ifdef GETDENTS64
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#define __getdirentries __getdirentries64
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#define dirent dirent64
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# define __getdents __getdents64
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# define dirent dirent64
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#endif
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/* The problem here is that we cannot simply read the next NBYTES
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bytes. We need to take the additional field into account. We use
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some heuristic. Assuming the directory contains names with 14
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characters on average we can compute an estimate number of entries
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characters on average we can compute an estimated number of entries
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which fit in the buffer. Taking this number allows us to specify a
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correct number of bytes to read. If we should be wrong, we can reset
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the file descriptor. */
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reasonable number of bytes to read. If we should be wrong, we can
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reset the file descriptor. In practice the kernel is limiting the
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amount of data returned much more then the reduced buffer size. */
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ssize_t
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__getdirentries (int fd, char *buf, size_t nbytes, off_t *basep)
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internal_function
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__getdents (int fd, char *buf, size_t nbytes)
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{
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off_t base = __lseek (fd, (off_t) 0, SEEK_CUR);
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off_t last_offset = base;
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off_t last_offset = 0;
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size_t red_nbytes;
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struct kernel_dirent *skdp, *kdp;
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struct dirent *dp;
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@ -84,7 +85,7 @@ __getdirentries (int fd, char *buf, size_t nbytes, off_t *basep)
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if (retval == -1)
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return -1;
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while ((char *) kdp < (char *) skdp + retval)
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{
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const size_t alignment = __alignof__ (struct dirent);
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@ -95,8 +96,13 @@ __getdirentries (int fd, char *buf, size_t nbytes, off_t *basep)
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if ((char *) dp + new_reclen > buf + nbytes)
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{
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/* Our heuristic failed. We read too many entries. Reset
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the stream. */
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__lseek (fd, last_offset, SEEK_SET);
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the stream. `last_offset' contains the last known
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position. If it is zero this is the first record we are
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reading. In this case do a relative search. */
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if (last_offset == 0)
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__lseek (fd, -retval, SEEK_CUR);
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else
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__lseek (fd, last_offset, SEEK_SET);
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break;
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}
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@ -112,12 +118,5 @@ __getdirentries (int fd, char *buf, size_t nbytes, off_t *basep)
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kdp = (struct kernel_dirent *) (((char *) kdp) + kdp->d_reclen);
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}
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if (basep)
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*basep = base;
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return (char *) dp - buf;
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}
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#ifndef GETDENTS64
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weak_alias (__getdirentries, getdirentries)
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#endif
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39
sysdeps/unix/sysv/linux/getdirentries.c
Normal file
39
sysdeps/unix/sysv/linux/getdirentries.c
Normal file
@ -0,0 +1,39 @@
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/* Copyright (C) 1993, 95, 96, 97, 98, 99 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <dirent.h>
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#include <unistd.h>
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#ifdef GETDENTS64
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# define getdirentries getdirentries64
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# define __getdents __getdents64
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#endif
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ssize_t
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getdirentries (int fd, char *buf, size_t nbytes, off_t *basep)
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{
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off_t base = __lseek (fd, (off_t) 0, SEEK_CUR);
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ssize_t result;
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result = __getdents (fd, buf, nbytes);
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if (result != -1)
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*basep = base;
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return result;
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}
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2
sysdeps/unix/sysv/linux/getdirentries64.c
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2
sysdeps/unix/sysv/linux/getdirentries64.c
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#define GETDENTS64 1
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#include "getdirentries.c"
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@ -1,4 +1,4 @@
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/* Copyright (C) 1997, 1998 Free Software Foundation, Inc.
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/* Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@ -27,9 +27,6 @@
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#include <dirstream.h>
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extern ssize_t __getdirentries64 (int, char *, size_t, off_t *);
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/* Read a directory entry from DIRP. */
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struct dirent64 *
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__readdir64 (DIR *dirp)
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@ -47,7 +44,6 @@ __readdir64 (DIR *dirp)
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/* We've emptied out our buffer. Refill it. */
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size_t maxread;
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off_t base;
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ssize_t bytes;
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#ifndef _DIRENT_HAVE_D_RECLEN
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@ -57,8 +53,7 @@ __readdir64 (DIR *dirp)
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maxread = dirp->allocation;
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#endif
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base = dirp->filepos;
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bytes = __getdirentries64 (dirp->fd, dirp->data, maxread, &base);
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bytes = __getdents64 (dirp->fd, dirp->data, maxread);
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if (bytes <= 0)
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{
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dp = NULL;
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@ -1,4 +1,4 @@
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/* Copyright (C) 1997, 1998 Free Software Foundation, Inc.
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/* Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@ -27,9 +27,6 @@
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#include <dirstream.h>
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extern ssize_t __getdirentries64 (int, char *, size_t, off_t *);
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/* Read a directory entry from DIRP, store result in ENTRY and return
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pointer to result in *RESULT. */
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int
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@ -47,7 +44,6 @@ readdir64_r (DIR *dirp, struct dirent64 *entry, struct dirent64 **result)
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/* We've emptied out our buffer. Refill it. */
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size_t maxread;
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off_t base;
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ssize_t bytes;
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#ifndef _DIRENT_HAVE_D_RECLEN
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@ -57,8 +53,7 @@ readdir64_r (DIR *dirp, struct dirent64 *entry, struct dirent64 **result)
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maxread = dirp->allocation;
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#endif
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base = dirp->filepos;
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bytes = __getdirentries64 (dirp->fd, dirp->data, maxread, &base);
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bytes = __getdents64 (dirp->fd, dirp->data, maxread);
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if (bytes <= 0)
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{
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dp = NULL;
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