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* filebuf.cc (open): Support ios::ate if _G_HAVE_IO_FILE_OPEN. 

From-SVN: r31057
This commit is contained in:
Martin v. Löwis 1999-12-21 18:10:24 +00:00 committed by Martin v. Löwis
parent 74a7ea1231
commit dec0fa945c
2 changed files with 16 additions and 4 deletions
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4
libio/ChangeLog
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@ -1,3 +1,7 @@
1999-12-21 Martin v. Löwis <loewis@informatik.hu-berlin.de>
* filebuf.cc (open): Support ios::ate if _G_HAVE_IO_FILE_OPEN.
1999-12-15 Jason Merrill <jason@casey.cygnus.com>
* filedoalloc.c, floatio.h, iovfprintf.c, iovfscanf.c: Remove

16
libio/filebuf.cc
View File

@ -1,5 +1,5 @@
/* This is part of libio/iostream, providing -*- C++ -*- input/output.
Copyright (C) 1993, 1995 Free Software Foundation
Copyright (C) 1993, 1995, 1999 Free Software Foundation
This file is part of the GNU IO Library. This library is free
software; you can redistribute it and/or modify it under the
@ -112,15 +112,23 @@ filebuf* filebuf::open(const char *filename, ios::openmode mode, int prot)
if (mode & (int)ios::noreplace)
posix_mode |= O_EXCL;
#if _G_HAVE_IO_FILE_OPEN
return (filebuf*)_IO_file_open (this, filename, posix_mode, prot,
read_write, 0);
if (!_IO_file_open (this, filename, posix_mode, prot,
read_write, 0))
return NULL;
if (mode & ios::ate) {
if (pubseekoff(0, ios::end) == EOF) {
_IO_un_link (this);
return NULL;
}
}
return this;
#else
int fd = ::open(filename, posix_mode, prot);
if (fd < 0)
return NULL;
_fileno = fd;
xsetflags(read_write, _IO_NO_READS+_IO_NO_WRITES+_IO_IS_APPENDING);
if (mode & (ios::ate|ios::app)) {
if (mode & ios::ate) {
if (pubseekoff(0, ios::end) == EOF)
return NULL;
}