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/*
* ***** BEGIN LICENSE BLOCK *****
* Version: MIT
*
* Portions created by VMware are Copyright (c) 2007-2012 VMware, Inc.
* All Rights Reserved.
*
* Portions created by Tony Garnock-Jones are Copyright (c) 2009-2010
* VMware, Inc. and Tony Garnock-Jones. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
* ***** END LICENSE BLOCK *****
*/
#include <unistd.h>
#include <errno.h>
#include <spawn.h>
#include <sys/wait.h>
#include "common.h"
#include "process.h"
extern char **environ;
void pipeline(const char *const *argv, struct pipeline *pl)
{
posix_spawn_file_actions_t file_acts;
int pipefds[2];
if (pipe(pipefds))
die_errno(errno, "pipe");
die_errno(posix_spawn_file_actions_init(&file_acts),
"posix_spawn_file_actions_init");
die_errno(posix_spawn_file_actions_adddup2(&file_acts, pipefds[0], 0),
"posix_spawn_file_actions_adddup2");
die_errno(posix_spawn_file_actions_addclose(&file_acts, pipefds[0]),
"posix_spawn_file_actions_addclose");
die_errno(posix_spawn_file_actions_addclose(&file_acts, pipefds[1]),
"posix_spawn_file_actions_addclose");
die_errno(posix_spawnp(&pl->pid, argv[0], &file_acts, NULL,
(char * const *)argv, environ),
"posix_spawnp: %s", argv[0]);
die_errno(posix_spawn_file_actions_destroy(&file_acts),
"posix_spawn_file_actions_destroy");
if (close(pipefds[0]))
die_errno(errno, "close");
pl->infd = pipefds[1];
}
int finish_pipeline(struct pipeline *pl)
{
int status;
if (close(pl->infd))
die_errno(errno, "close");
if (waitpid(pl->pid, &status, 0) < 0)
die_errno(errno, "waitpid");
return WIFEXITED(status) && WEXITSTATUS(status) == 0;
}
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