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author | Roland McGrath <roland@gnu.org> | 1995-02-18 01:27:10 +0000 |
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committer | Roland McGrath <roland@gnu.org> | 1995-02-18 01:27:10 +0000 |
commit | 28f540f45bbacd939bfd07f213bcad2bf730b1bf (patch) | |
tree | 15f07c4c43d635959c6afee96bde71fb1b3614ee /sysdeps/mach/hurd/getdents.c | |
download | glibc-28f540f45bbacd939bfd07f213bcad2bf730b1bf.tar.gz glibc-28f540f45bbacd939bfd07f213bcad2bf730b1bf.tar.xz glibc-28f540f45bbacd939bfd07f213bcad2bf730b1bf.zip |
initial import
Diffstat (limited to 'sysdeps/mach/hurd/getdents.c')
-rw-r--r-- | sysdeps/mach/hurd/getdents.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/sysdeps/mach/hurd/getdents.c b/sysdeps/mach/hurd/getdents.c new file mode 100644 index 0000000000..4de2eb351d --- /dev/null +++ b/sysdeps/mach/hurd/getdents.c @@ -0,0 +1,62 @@ +/* Copyright (C) 1992, 1993, 1994, 1995 Free Software Foundation, Ince + +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 Library General Public License as +published by the Free Software Foundation; either version 2 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 +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include <ansidecl.h> +#include <stddef.h> +#include <errno.h> +#include <sys/types.h> +#include <hurd.h> +#include <hurd/fd.h> +#include <string.h> + +ssize_t +DEFUN(__getdirentries, (fd, buf, nbytes, basep), + int fd AND PTR buf AND size_t nbytes AND off_t *basep) +{ + error_t err; + int entriesread; + char *data = buf; + mach_msg_type_number_t bytesread = nbytes; + + /* Fault before taking any locks. */ + *(volatile off_t *) basep = *basep; + + err = HURD_DPORT_USE (fd, __dir_readdir (port, &data, &bytesread, + *basep, -1, nbytes, &entriesread)); + if (err) + return __hurd_dfail (fd, err); + + if (data != buf) + { + size_t copy = bytesread; + if (copy > nbytes) + /* The server has a violated the dir_readdir protocol. */ + copy = nbytes; + memcpy (buf, data, copy); + __vm_deallocate (__mach_task_self (), (vm_address_t) data, bytesread); + bytesread = copy; + } + + *basep += entriesread; + + return bytesread; +} + +weak_alias (__getdirentries, getdirentries) + |