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authorUlrich Drepper <drepper@redhat.com>1998-07-05 11:57:59 +0000
committerUlrich Drepper <drepper@redhat.com>1998-07-05 11:57:59 +0000
commit77ccaba1fa58f871e797ced648c2966842e477db (patch)
treefec432e9338d6956a0a9b6e5a03d330ff580bb06 /libio/iofgets_u.c
parenteb27c43f02ec7890c19f424de458df903745db5d (diff)
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Update.
1998-07-05 11:54 Ulrich Drepper <drepper@cygnus.com> * Versions: Add pthread_attr_init ti GLIBC_2.1 version in libc.
Diffstat (limited to 'libio/iofgets_u.c')
-rw-r--r--libio/iofgets_u.c56
1 files changed, 56 insertions, 0 deletions
diff --git a/libio/iofgets_u.c b/libio/iofgets_u.c
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+/* Copyright (C) 1993, 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
+ This file is part of the GNU IO Library.
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License as
+ published by the Free Software Foundation; either version 2, or (at
+ your option) any later version.
+
+ This 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
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this library; see the file COPYING. If not, write to
+ the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
+ MA 02111-1307, USA.
+
+ As a special exception, if you link this library with files
+ compiled with a GNU compiler to produce an executable, this does
+ not cause the resulting executable to be covered by the GNU General
+ Public License. This exception does not however invalidate any
+ other reasons why the executable file might be covered by the GNU
+ General Public License. */
+
+#include "libioP.h"
+#include <stdio.h>
+
+char *
+fgets_unlocked (buf, n, fp)
+ char *buf;
+ int n;
+ _IO_FILE *fp;
+{
+ _IO_size_t count;
+ char *result;
+ int old_error;
+ CHECK_FILE (fp, NULL);
+ if (n <= 0)
+ return NULL;
+ /* This is very tricky since a file descriptor may be in the
+ non-blocking mode. The error flag doesn't mean much in this
+ case. We return an error only when there is a new error. */
+ old_error = fp->_IO_file_flags & _IO_ERR_SEEN;
+ fp->_IO_file_flags &= ~_IO_ERR_SEEN;
+ count = _IO_getline (fp, buf, n - 1, '\n', 1);
+ if (count == 0 || (fp->_IO_file_flags & _IO_ERR_SEEN))
+ result = NULL;
+ else
+ {
+ buf[count] = '\0';
+ result = buf;
+ }
+ fp->_IO_file_flags |= old_error;
+ return result;
+}