GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libc/stdlib/system.c Lines: 0 25 0.0 %
Date: 2017-11-13 Branches: 0 9 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: system.c,v 1.12 2016/03/13 18:34:21 guenther Exp $ */
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/*
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 * Copyright (c) 1988 The Regents of the University of California.
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. Neither the name of the University nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 */
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <errno.h>
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#include <signal.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <paths.h>
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int
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system(const char *command)
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{
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	pid_t pid, cpid;
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	struct sigaction intsave, quitsave;
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	sigset_t mask, omask;
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	int pstat;
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	char *argp[] = {"sh", "-c", NULL, NULL};
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	if (!command)		/* just checking... */
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		return(1);
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	argp[2] = (char *)command;
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	sigemptyset(&mask);
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	sigaddset(&mask, SIGCHLD);
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	sigprocmask(SIG_BLOCK, &mask, &omask);
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	switch (cpid = vfork()) {
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	case -1:			/* error */
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		sigprocmask(SIG_SETMASK, &omask, NULL);
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		return(-1);
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	case 0:				/* child */
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		sigprocmask(SIG_SETMASK, &omask, NULL);
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		execve(_PATH_BSHELL, argp, environ);
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		_exit(127);
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	}
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	sigaction(SIGINT, NULL, &intsave);
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	sigaction(SIGQUIT, NULL, &quitsave);
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	do {
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		pid = waitpid(cpid, &pstat, 0);
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	} while (pid == -1 && errno == EINTR);
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	sigprocmask(SIG_SETMASK, &omask, NULL);
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	sigaction(SIGINT, &intsave, NULL);
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	sigaction(SIGQUIT, &quitsave, NULL);
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	return (pid == -1 ? -1 : pstat);
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}
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DEF_STRONG(system);