23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner/*
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner * CDDL HEADER START
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner *
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner * The contents of this file are subject to the terms of the
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner * Common Development and Distribution License (the "License").
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner * You may not use this file except in compliance with the License.
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner *
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner * or http://www.opensolaris.org/os/licensing.
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner * See the License for the specific language governing permissions
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner * and limitations under the License.
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner *
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner * When distributing Covered Code, include this CDDL HEADER in each
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner * If applicable, add the following below this CDDL HEADER, with the
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner * fields enclosed by brackets "[]" replaced with your own identifying
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner * information: Portions Copyright [yyyy] [name of copyright owner]
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner *
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner * CDDL HEADER END
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner */
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner/*
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner */
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner#include "lint.h"
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner#include "file64.h"
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner#include "mtlib.h"
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner#include <stdio.h>
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner#include <errno.h>
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner#include <thread.h>
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner#include <synch.h>
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner#include <unistd.h>
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner#include <limits.h>
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner#include <malloc.h>
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner#include <sys/types.h>
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner#include "stdiom.h"
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner#define LINESZ 128 /* initial guess for a NULL *lineptr */
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulknerssize_t
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulknergetdelim(char **_RESTRICT_KYWD lineptr, size_t *_RESTRICT_KYWD n,
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner int delimiter, FILE *_RESTRICT_KYWD iop)
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner{
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner rmutex_t *lk;
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner char *ptr;
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner size_t size;
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner int c;
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner size_t cnt;
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner if (lineptr == NULL || n == NULL ||
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner delimiter < 0 || delimiter > UCHAR_MAX) {
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner errno = EINVAL;
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner return (-1);
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner }
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner if (*lineptr == NULL || *n < LINESZ) { /* initial allocation */
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner if ((*lineptr = realloc(*lineptr, LINESZ)) == NULL) {
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner errno = ENOMEM;
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner return (-1);
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner }
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner *n = LINESZ;
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner }
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner ptr = *lineptr;
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner size = *n;
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner cnt = 0;
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner FLOCKFILE(lk, iop);
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner _SET_ORIENTATION_BYTE(iop);
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner do {
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner c = (--iop->_cnt < 0) ? __filbuf(iop) : *iop->_ptr++;
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner if (c == EOF)
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner break;
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner *ptr++ = c;
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner if (++cnt == size) { /* must reallocate */
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner if ((ptr = realloc(*lineptr, 2 * size)) == NULL) {
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner FUNLOCKFILE(lk);
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner ptr = *lineptr + size - 1;
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner *ptr = '\0';
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner errno = ENOMEM;
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner return (-1);
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner }
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner *lineptr = ptr;
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner ptr += size;
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner *n = size = 2 * size;
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner }
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner } while (c != delimiter);
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner *ptr = '\0';
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner FUNLOCKFILE(lk);
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner if (cnt > SSIZE_MAX) {
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner errno = EOVERFLOW;
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner return (-1);
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner }
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner return (cnt ? cnt : -1);
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner}
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulknerssize_t
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulknergetline(char **_RESTRICT_KYWD lineptr, size_t *_RESTRICT_KYWD n,
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner FILE *_RESTRICT_KYWD iop)
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner{
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner return (getdelim(lineptr, n, '\n', iop));
23a1ccea6aac035f084a7a4cdc968687d1b02dafRoger A. Faulkner}