/*
* Copyright (c) 1998,1999,2000
* Traakan, Inc., Los Altos, CA
* All rights reserved.
*
* 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 unmodified, 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*/
/*
* Project: NDMJOB
* Ident: $Id: $
*
* Description:
*
*/
#include "ndmagents.h"
#ifndef NDMOS_OPTION_NO_DATA_AGENT
int
ndmda_pipe_fork_exec (struct ndm_session *sess, char *cmd, int is_backup)
{
struct ndm_data_agent * da = &sess->data_acb;
struct ndmchan * ch;
int errpipe[2];
int datpipe[2];
int wrppipe[2];
int nullfd;
int rc = -1;
ndmalogf (sess, 0, 2, "Starting %s", cmd);
nullfd = open ("/dev/null", 2);
if (nullfd < 0) {
return rc;
}
rc = pipe (errpipe);
if (rc < 0) {
close (nullfd);
return rc;
}
rc = pipe (datpipe);
if (rc < 0) {
close (nullfd);
close (errpipe[0]);
close (errpipe[1]);
return rc;
}
rc = pipe (wrppipe);
if (rc < 0) {
close (nullfd);
close (errpipe[0]);
close (errpipe[1]);
close (datpipe[0]);
close (datpipe[1]);
return rc;
}
rc = fork();
if (rc < 0) {
close (nullfd);
close (errpipe[0]);
close (errpipe[1]);
close (datpipe[0]);
close (datpipe[1]);
close (wrppipe[0]);
close (wrppipe[1]);
return rc;
}
if (rc == 0) {
/* child */
dup2 (errpipe[1], 2);
dup2 (wrppipe[1], 3);
close (errpipe[0]);
close (wrppipe[0]);
if (is_backup) {
dup2 (nullfd, 0);
dup2 (datpipe[1], 1);
close (datpipe[0]);
} else {
dup2 (datpipe[0], 0);
dup2 (nullfd, 1);
close (datpipe[1]);
}
/*
* 0 -- formatter stdin
* 1 -- formatter stdout
* 2 -- formatter stderr
* 3 -- formatter wrap chan (wraplib.c)
*/
for (rc = 4; rc < 100; rc++) {
close(rc);
}
execl ("/bin/sh", "sh", "-c", cmd, NULL);
fprintf (stderr, "EXEC FAILED %s\n", cmd);
exit(127);
}
/* parent */
close (nullfd);
ch = &da->formatter_error;
ndmchan_initialize (ch, "dfp-error");
ndmchan_setbuf (ch, da->fmt_error_buf, sizeof da->fmt_error_buf);
close (errpipe[1]);
ndmos_condition_pipe_fd (sess, errpipe[0]);
ndmchan_start_read (ch, errpipe[0]);
ch = &da->formatter_wrap;
ndmchan_initialize (ch, "dfp-wrap");
ndmchan_setbuf (ch, da->fmt_wrap_buf, sizeof da->fmt_wrap_buf);
close (wrppipe[1]);
ndmos_condition_pipe_fd (sess, wrppipe[0]);
ndmchan_start_read (ch, wrppipe[0]);
ch = &da->formatter_image;
ndmchan_initialize (ch, "dfp-image");
ndmchan_setbuf (ch, da->fmt_image_buf, sizeof da->fmt_image_buf);
if (is_backup) {
ndmalogf (sess, 0, 2, "backup...");
close (datpipe[1]);
ndmos_condition_pipe_fd (sess, datpipe[0]);
ndmchan_start_read (ch, datpipe[0]);
} else {
ndmalogf (sess, 0, 2, "recover...");
close (datpipe[0]);
ndmos_condition_pipe_fd (sess, datpipe[1]);
ndmchan_start_write (ch, datpipe[1]);
}
da->formatter_pid = rc;
return rc; /* PID */
}
int
ndmda_add_to_cmd_with_escapes (char *cmd, char *word, char *special)
{
char * cmd_lim = &cmd[NDMDA_MAX_CMD-3];
char * p;
int c;
p = cmd;
while (*p) p++;
if (p != cmd) *p++ = ' ';
while ((c = *word++) != 0) {
if (p >= cmd_lim)
return -1; /* overflow */
if (c == '\\' || strchr (special, c))
*p++ = '\\';
*p++ = c;
}
*p = 0;
return 0;
}
int
ndmda_add_to_cmd (char *cmd, char *word)
{
return ndmda_add_to_cmd_with_escapes (cmd, word, " \t`'\"*?[]$");
}
int
ndmda_add_to_cmd_allow_file_wildcards (char *cmd, char *word)
{
return ndmda_add_to_cmd_with_escapes (cmd, word, " \t`'\"$");
}
#endif /* !NDMOS_OPTION_NO_DATA_AGENT */