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Diffstat (limited to 'sysdeps/unix/sysv/sysv4/solaris2/getdents.c')
-rw-r--r--sysdeps/unix/sysv/sysv4/solaris2/getdents.c114
1 files changed, 0 insertions, 114 deletions
diff --git a/sysdeps/unix/sysv/sysv4/solaris2/getdents.c b/sysdeps/unix/sysv/sysv4/solaris2/getdents.c
deleted file mode 100644
index ab782ffaac..0000000000
--- a/sysdeps/unix/sysv/sysv4/solaris2/getdents.c
+++ /dev/null
@@ -1,114 +0,0 @@
-/* Copyright (C) 1993,95,96,97,98, 2004 Free Software Foundation, Inc.
- 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, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
-
-#include <alloca.h>
-#include <dirent.h>
-#include <stddef.h>
-#include <string.h>
-#include <unistd.h>
-#include <sys/param.h>
-#include <sys/types.h>
-
-#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
-
-
-extern int __getdents (int fd, char *buf, size_t nbytes);
-
-/* For Solaris we need a special version of this file since the
- definition of `struct dirent' is not the same for the kernel and
- the libc. There is one additional field which might be introduced
- in the kernel structure in the future.
-
- He is the system definition of `struct dirent' as of 2.6: */
-
-struct kernel_dirent
- {
- ino_t d_ino;
- off_t d_off;
- unsigned short int d_reclen;
- char d_name[256];
- };
-
-#ifdef GETDENTS64
-#define __getdirentries __getdirentries64
-#define dirent dirent64
-#endif
-
-/* The problem here is that we cannot simply read the next NBYTES
- bytes. We need to take the additional field into account. We use
- some heuristic. Assuming the directory contains names with 14
- characters on average we can compute an estimate number of entries
- which fit in the buffer. Taking this number allows us to specify a
- correct number of bytes to read. If we should be wrong, we can reset
- the file descriptor. */
-ssize_t
-__getdirentries (int fd, char *buf, size_t nbytes, off_t *basep)
-{
- off_t base = __lseek (fd, (off_t) 0, SEEK_CUR);
- off_t last_offset = base;
- size_t red_nbytes;
- struct kernel_dirent *skdp, *kdp;
- struct dirent *dp;
- int retval;
- const size_t size_diff = (offsetof (struct dirent, d_name)
- - offsetof (struct kernel_dirent, d_name));
-
- red_nbytes = nbytes - ((nbytes / (offsetof (struct dirent, d_name) + 14))
- * size_diff);
-
- dp = (struct dirent *) buf;
- skdp = kdp = __alloca (red_nbytes);
-
- retval = __getdents (fd, (char *) kdp, red_nbytes);
-
- while ((char *) kdp < (char *) skdp + retval)
- {
- const size_t alignment = __alignof__ (struct dirent);
- /* Since kdp->d_reclen is already aligned for the kernel structure
- this may compute a value that is bigger than necessary. */
- size_t new_reclen = ((kdp->d_reclen + size_diff + alignment - 1)
- & ~(alignment - 1));
- if ((char *) dp + new_reclen > buf + nbytes)
- {
- /* Our heuristic failed. We read too many entries. Reset
- the stream. */
- __lseek (fd, last_offset, SEEK_SET);
- break;
- }
-
- last_offset = kdp->d_off;
- dp->d_ino = kdp->d_ino;
- dp->d_off = kdp->d_off;
- dp->d_reclen = new_reclen;
- dp->d_type = DT_UNKNOWN;
- memcpy (dp->d_name, kdp->d_name,
- kdp->d_reclen - offsetof (struct kernel_dirent, d_name));
-
- dp = (struct dirent *) ((char *) dp + new_reclen);
- kdp = (struct kernel_dirent *) (((char *) kdp) + kdp->d_reclen);
- }
-
- if (basep)
- *basep = base;
-
- return (char *) dp - buf;
-}
-
-#ifndef GETDENTS64
-weak_alias (__getdirentries, getdirentries)
-#endif