| 4 |
|
/* |
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|
* Routines to communicate with separate process via dual pipes |
| 6 |
|
* |
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< |
* External symbols declared in standard.h |
| 7 |
> |
* External symbols declared in rtprocess.h |
| 8 |
|
*/ |
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|
|
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< |
/* ==================================================================== |
| 11 |
< |
* The Radiance Software License, Version 1.0 |
| 12 |
< |
* |
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< |
* Copyright (c) 1990 - 2002 The Regents of the University of California, |
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< |
* through Lawrence Berkeley National Laboratory. All rights reserved. |
| 15 |
< |
* |
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< |
* Redistribution and use in source and binary forms, with or without |
| 17 |
< |
* modification, are permitted provided that the following conditions |
| 18 |
< |
* are met: |
| 19 |
< |
* |
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< |
* 1. Redistributions of source code must retain the above copyright |
| 21 |
< |
* notice, this list of conditions and the following disclaimer. |
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< |
* |
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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 |
| 25 |
< |
* the documentation and/or other materials provided with the |
| 26 |
< |
* distribution. |
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< |
* |
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< |
* 3. The end-user documentation included with the redistribution, |
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< |
* if any, must include the following acknowledgment: |
| 30 |
< |
* "This product includes Radiance software |
| 31 |
< |
* (http://radsite.lbl.gov/) |
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< |
* developed by the Lawrence Berkeley National Laboratory |
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< |
* (http://www.lbl.gov/)." |
| 34 |
< |
* Alternately, this acknowledgment may appear in the software itself, |
| 35 |
< |
* if and wherever such third-party acknowledgments normally appear. |
| 36 |
< |
* |
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< |
* 4. The names "Radiance," "Lawrence Berkeley National Laboratory" |
| 38 |
< |
* and "The Regents of the University of California" must |
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< |
* not be used to endorse or promote products derived from this |
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< |
* software without prior written permission. For written |
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< |
* permission, please contact [email protected]. |
| 42 |
< |
* |
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< |
* 5. Products derived from this software may not be called "Radiance", |
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< |
* nor may "Radiance" appear in their name, without prior written |
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< |
* permission of Lawrence Berkeley National Laboratory. |
| 46 |
< |
* |
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< |
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| 48 |
< |
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 49 |
< |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 50 |
< |
* DISCLAIMED. IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR |
| 51 |
< |
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 52 |
< |
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 53 |
< |
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| 54 |
< |
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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< |
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
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< |
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| 57 |
< |
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 58 |
< |
* SUCH DAMAGE. |
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< |
* ==================================================================== |
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< |
* |
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< |
* This software consists of voluntary contributions made by many |
| 62 |
< |
* individuals on behalf of Lawrence Berkeley National Laboratory. For more |
| 63 |
< |
* information on Lawrence Berkeley National Laboratory, please see |
| 64 |
< |
* <http://www.lbl.gov/>. |
| 65 |
< |
*/ |
| 10 |
> |
#include "copyright.h" |
| 11 |
|
|
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< |
/* find pipe buffer limit */ |
| 68 |
< |
#include <sys/param.h> |
| 12 |
> |
#include "rtprocess.h" |
| 13 |
|
|
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< |
#ifndef PIPE_BUF |
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< |
#ifdef PIPSIZ |
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< |
#define PIPE_BUF PIPSIZ |
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< |
#else |
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< |
#ifdef PIPE_MAX |
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< |
#define PIPE_BUF PIPE_MAX |
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< |
#else |
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< |
#define PIPE_BUF 512 /* hyperconservative */ |
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< |
#endif |
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< |
#endif |
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< |
#endif |
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> |
/* |
| 15 |
|
|
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< |
#include "vfork.h" |
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> |
The functions open_process() and close_process() exist in |
| 17 |
> |
(currently) two versions, which are found in the files: |
| 18 |
|
|
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< |
#ifndef BSD |
| 20 |
< |
#include <errno.h> |
| 86 |
< |
#endif |
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> |
win_process.c |
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> |
unix_process.c |
| 21 |
|
|
| 22 |
+ |
*/ |
| 23 |
|
|
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|
int |
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< |
open_process(pd, av) /* open communication to separate process */ |
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< |
int pd[3]; |
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< |
char *av[]; |
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> |
process( /* process data through pd */ |
| 26 |
> |
SUBPROC *pd, |
| 27 |
> |
void *recvbuf, void *sendbuf, |
| 28 |
> |
int nbr, int nbs |
| 29 |
> |
) |
| 30 |
|
{ |
| 31 |
< |
extern char *getpath(), *getenv(); |
| 95 |
< |
char *compath; |
| 96 |
< |
int p0[2], p1[2]; |
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< |
/* find executable */ |
| 98 |
< |
compath = getpath(av[0], getenv("PATH"), 1); |
| 99 |
< |
if (compath == 0) |
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< |
return(0); |
| 101 |
< |
if (pipe(p0) < 0 || pipe(p1) < 0) |
| 31 |
> |
if (!(pd->flags & PF_RUNNING)) |
| 32 |
|
return(-1); |
| 33 |
< |
if ((pd[2] = vfork()) == 0) { /* if child */ |
| 104 |
< |
close(p0[1]); |
| 105 |
< |
close(p1[0]); |
| 106 |
< |
if (p0[0] != 0) { /* connect p0 to stdin */ |
| 107 |
< |
dup2(p0[0], 0); |
| 108 |
< |
close(p0[0]); |
| 109 |
< |
} |
| 110 |
< |
if (p1[1] != 1) { /* connect p1 to stdout */ |
| 111 |
< |
dup2(p1[1], 1); |
| 112 |
< |
close(p1[1]); |
| 113 |
< |
} |
| 114 |
< |
execv(compath, av); /* exec command */ |
| 115 |
< |
perror(compath); |
| 116 |
< |
_exit(127); |
| 117 |
< |
} |
| 118 |
< |
if (pd[2] == -1) |
| 33 |
> |
if (writebuf(pd->w, sendbuf, nbs) < nbs) |
| 34 |
|
return(-1); |
| 35 |
< |
close(p0[0]); |
| 121 |
< |
close(p1[1]); |
| 122 |
< |
pd[0] = p1[0]; |
| 123 |
< |
pd[1] = p0[1]; |
| 124 |
< |
return(PIPE_BUF); |
| 35 |
> |
return(readbuf(pd->r, recvbuf, nbr)); |
| 36 |
|
} |
| 37 |
|
|
| 38 |
|
|
| 128 |
– |
int |
| 129 |
– |
process(pd, recvbuf, sendbuf, nbr, nbs) /* process data through pd */ |
| 130 |
– |
int pd[3]; |
| 131 |
– |
char *recvbuf, *sendbuf; |
| 132 |
– |
int nbr, nbs; |
| 133 |
– |
{ |
| 134 |
– |
if (nbs > PIPE_BUF) |
| 135 |
– |
return(-1); |
| 136 |
– |
if (writebuf(pd[1], sendbuf, nbs) < nbs) |
| 137 |
– |
return(-1); |
| 138 |
– |
return(readbuf(pd[0], recvbuf, nbr)); |
| 139 |
– |
} |
| 39 |
|
|
| 40 |
< |
|
| 41 |
< |
int |
| 42 |
< |
close_process(pd) /* close pipes and wait for process */ |
| 43 |
< |
int pd[3]; |
| 40 |
> |
ssize_t |
| 41 |
> |
readbuf( /* read all of requested buffer */ |
| 42 |
> |
int fd, |
| 43 |
> |
void *buf, |
| 44 |
> |
ssize_t siz |
| 45 |
> |
) |
| 46 |
|
{ |
| 47 |
< |
int pid, status; |
| 48 |
< |
|
| 148 |
< |
close(pd[1]); |
| 149 |
< |
close(pd[0]); |
| 150 |
< |
while ((pid = wait(&status)) != -1) |
| 151 |
< |
if (pid == pd[2]) |
| 152 |
< |
return(status>>8 & 0xff); |
| 153 |
< |
return(-1); /* ? unknown status */ |
| 154 |
< |
} |
| 155 |
< |
|
| 156 |
< |
|
| 157 |
< |
int |
| 158 |
< |
readbuf(fd, bpos, siz) /* read all of requested buffer */ |
| 159 |
< |
int fd; |
| 160 |
< |
char *bpos; |
| 161 |
< |
int siz; |
| 162 |
< |
{ |
| 163 |
< |
register int cc = 0, nrem = siz; |
| 47 |
> |
char *bpos = (char *)buf; |
| 48 |
> |
ssize_t cc = 0, nrem = siz; |
| 49 |
|
retry: |
| 50 |
|
while (nrem > 0 && (cc = read(fd, bpos, nrem)) > 0) { |
| 51 |
|
bpos += cc; |
| 62 |
|
} |
| 63 |
|
|
| 64 |
|
|
| 65 |
< |
int |
| 66 |
< |
writebuf(fd, bpos, siz) /* write all of requested buffer */ |
| 67 |
< |
int fd; |
| 68 |
< |
char *bpos; |
| 69 |
< |
int siz; |
| 65 |
> |
ssize_t |
| 66 |
> |
writebuf( /* write all of requested buffer */ |
| 67 |
> |
int fd, |
| 68 |
> |
void *buf, |
| 69 |
> |
ssize_t siz |
| 70 |
> |
) |
| 71 |
|
{ |
| 72 |
< |
register int cc = 0, nrem = siz; |
| 72 |
> |
char *bpos = (char *)buf; |
| 73 |
> |
ssize_t cc = 0, nrem = siz; |
| 74 |
|
retry: |
| 75 |
|
while (nrem > 0 && (cc = write(fd, bpos, nrem)) > 0) { |
| 76 |
|
bpos += cc; |
