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--- Libc/Libc-262/gen/popen.c
+++ /dev/null
@@ -1,205 +0,0 @@
-/*
- * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- *
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
- *
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
- */
-/*
- * Copyright (c) 1988, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software written by Ken Arnold and
- * published in UNIX Review, Vol. 6, No. 8.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/param.h>
-#include <sys/wait.h>
-#include <sys/socket.h>
-
-#include <signal.h>
-#include <errno.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <paths.h>
-#include <crt_externs.h>
-
-#define environ *(_NSGetEnviron())
-
-static struct pid {
- struct pid *next;
- FILE *fp;
- pid_t pid;
-} *pidlist;
-
-FILE *
-popen(command, type)
- const char *command, *type;
-{
- struct pid *cur;
- FILE *iop;
- int pdes[2], pid, twoway;
- char *argv[4];
- struct pid *p;
-
- if (strchr(type, '+')) {
- twoway = 1;
- type = "r+";
- if (socketpair(AF_UNIX, SOCK_STREAM, 0, pdes) < 0)
- return (NULL);
- } else {
- twoway = 0;
- if ((*type != 'r' && *type != 'w') || type[1])
- return (NULL);
- }
- if (pipe(pdes) < 0)
- return (NULL);
-
- if ((cur = malloc(sizeof(struct pid))) == NULL) {
- (void)close(pdes[0]);
- (void)close(pdes[1]);
- return (NULL);
- }
-
- argv[0] = "sh";
- argv[1] = "-c";
- argv[2] = (char *)command;
- argv[3] = NULL;
-
- switch (pid = vfork()) {
- case -1: /* Error. */
- (void)close(pdes[0]);
- (void)close(pdes[1]);
- free(cur);
- return (NULL);
- /* NOTREACHED */
- case 0: /* Child. */
- if (*type == 'r') {
- /*
- * The _dup2() to STDIN_FILENO is repeated to avoid
- * writing to pdes[1], which might corrupt the
- * parent's copy. This isn't good enough in
- * general, since the _exit() is no return, so
- * the compiler is free to corrupt all the local
- * variables.
- */
- (void)close(pdes[0]);
- if (pdes[1] != STDOUT_FILENO) {
- (void)dup2(pdes[1], STDOUT_FILENO);
- (void)close(pdes[1]);
- if (twoway)
- (void)dup2(STDOUT_FILENO, STDIN_FILENO);
- } else if (twoway && (pdes[1] != STDIN_FILENO))
- (void)dup2(pdes[1], STDIN_FILENO);
- } else {
- if (pdes[0] != STDIN_FILENO) {
- (void)dup2(pdes[0], STDIN_FILENO);
- (void)close(pdes[0]);
- }
- (void)close(pdes[1]);
- }
- for (p = pidlist; p; p = p->next) {
- (void)close(fileno(p->fp));
- }
- execve(_PATH_BSHELL, argv, environ);
- _exit(127);
- /* NOTREACHED */
- }
-
- /* Parent; assume fdopen can't fail. */
- if (*type == 'r') {
- iop = fdopen(pdes[0], type);
- (void)close(pdes[1]);
- } else {
- iop = fdopen(pdes[1], type);
- (void)close(pdes[0]);
- }
-
- /* Link into list of file descriptors. */
- cur->fp = iop;
- cur->pid = pid;
- cur->next = pidlist;
- pidlist = cur;
-
- return (iop);
-}
-
-/*
- * pclose --
- * Pclose returns -1 if stream is not associated with a `popened' command,
- * if already `pclosed', or waitpid returns an error.
- */
-int
-pclose(iop)
- FILE *iop;
-{
- register struct pid *cur, *last;
- int pstat;
- pid_t pid;
-
- /* Find the appropriate file pointer. */
- for (last = NULL, cur = pidlist; cur; last = cur, cur = cur->next)
- if (cur->fp == iop)
- break;
- if (cur == NULL)
- return (-1);
-
- (void)fclose(iop);
-
- do {
- pid = wait4(cur->pid, &pstat, 0, (struct rusage *)0);
- } while (pid == -1 && errno == EINTR);
-
- /* Remove the entry from the linked list. */
- if (last == NULL)
- pidlist = cur->next;
- else
- last->next = cur->next;
- free(cur);
-
- return (pid == -1 ? -1 : pstat);
-}